Locomotive traction cabinet

The utility model discloses a locomotive traction cabinet, including box and the electrical equipment of setting in box inside, electrical equipment is located the top position near the box, lie in electrical equipment's the vertical heat dissipation wind channel that is provided with of below, box, the below in heat dissipation wind channel is provided with vertical fan to the up -draught, the top of box is provided with the air outlet, and the air outlet is connected with and collects the wind channel. Electrical equipment and cooling parts closely laminate to cooling parts sets up in the wind channel of dispelling the heat. Cooling parts still is provided with the fin. The one end that the heat dissipation wind channel is close to the fan is provided with the air inlet end, and the one end that the heat dissipation wind channel is close to the air outlet is provided with the air -out end, the size of air inlet end is less than the size of air -out end. The tip that collects the wind ...

Variable frequency power supply device among fuel tram

The utility model discloses a variable frequency power supply device among fuel tram, fuel cell system including being used for providing DC source voltage still includes more than one frequency conversion module, and every frequency conversion module's one end is connected fuel cell system, the heat rejection apparatus who corresponds is connected to the other end, frequency conversion module inserts the DC source voltage of fuel cell system output, carry out power control to the DC source voltage who inserts after, mains voltage gives heat rejection apparatus behind the output control. The utility model discloses can carry out the frequency conversion power supply to heat rejection apparatus among the fuel tram, realize power automatically regulated, and have simple structure, cost of manufacture and low power dissipation and the high advantage of power efficiency.

A pull conversion system for diesel locomotive

The utility model discloses a pull conversion system for diesel locomotive, including the single -phase rectifier module, copped wave boost module and the contravariant module that connect gradually, the single phase power that single -phase rectifier module inserted diesel locomotive's uniphase output dynamo output carries out the rectification, and the DC voltage of output after the rectification carries on through copped wave boost module that copped wave is stepped up and the steady voltage, exports the DC voltage of required size, the contravariant module is the DC voltage contravariant of copped wave boost module output the alternating current and offers the three phase machine. The utility model has the advantages of simple structure, can drive with the three phase machine of uniphase output generator with the electric pressure, and stabilization of output.

Hybrid power system of port machine

The utility model provides a hybrid power system of port machine, includes first switch tube S1~fourth switch tube S4, first inductance L1~third inductance L3, BUS capacitors C1 and filter capacitance C2, have first node between first switch tube S1 and the second switch pipe S2, have the second node between third switch tube S3 and the fourth switch tube S4, a nodal connection second inductance L2's one end, the 2nd nodal connection third inductance L3's one end, second inductance L2 and third inductance L3's the other end all with first inductance L1 series connection, first inductance L1 and filter capacitance C2 series connection, the dc -to -ac converter is connected at filter capacitance C2's both ends, and the output of dc -to -ac converter has been connected and is risen the motor. The utility model discloses an aspect switches on current sudden change can avoid the switch tube to open the time, reduces switching loss, reduces the backward recovery loss of diode, voltage spike when ...

A storage battery charging device for diesel locomotive

The utility model discloses a storage battery charging device for diesel locomotive, including three -phase rectifier module, copped wave boost module and the voltage transformation and the isolation module that connect gradually, the three phase current that three -phase rectifier module inserted diesel locomotive's interchange auxiliary generator output carries out the rectification, and the DC voltage after stepping up is exported through copped wave boost module to voltage after the rectification, voltage transformation and the DC voltage transform of keeping apart after the module will be stepped up are required size and carry out voltage and keep apart the back, offer the battery. The utility model discloses can provide accurate controllable storage battery charging power, and have simple structure, required with low costs, occupy smallly and advantage such as safe and reliable.

Method for preparing functional grease by enzyme catalysis and modificaiton on tea oil

The invention discloses a method for preparing functional grease by enzyme catalysis and modification on tea oil, comprising the following steps of: mixing tea oil and middle carbon chain fatty acid which are used as raw materials in the mole ratio of 1:(1-1):12; adding water accounting for 0.01-2 percent of the weight of the raw materials; not taking organic solvent as a medium in a nonaqueous phase system, passing through a packed column filled with 1,3-specific immobilized lipase in reverse flow way; reacting at 30DEG C-80 DEG C for 0.5h-3h; and separating the product to obtain grease withrapid energy supply and low heat quantity function, wherein in the functional grease, the middle carbon chain fatty acid is mainly positioned on the sn-1,3 site of triglycercide and unsaturated oleicacid of the fatty acid is mainly positioned on sn-2 site of the triglycercide. The invention can achieve favorable effects of maintaining the stable catalytic activity of enzyme and prolonging the service ...

Heat source heat radiation structure under sealing ring border

The utility model discloses a heat source heat radiation structure under sealing ring border, including sealed container, still include radiator and cooling liquid tank, the radiator with the heat source links to each other, cooling liquid tank locates the radiator with between sealed container's the inner wall, be filled with the coolant liquid in the cooling liquid tank, the heat spreader portion of radiator soak in in the coolant liquid. The utility model has the advantages of the structure is reliable, and the radiating efficiency is high, can guarantee product normal operating.

Method for extracting grease from oil-tea camellia seed kernel and recovering saponin and saccharide active substances

The invention discloses a method for extracting grease from oil-tea camellia seed kernel and recovering saponin and saccharide active substances, comprising the following steps of: (1) crushing and tempering: with hull-removed oil-tea camellia seed kernels as raw materials, crushing and grinding the materials, adding water for uniformly stirring, wherein the quality-volume ratio of the oil-tea camellia seed kernels to the water is 1kg:2-8L and controlling the temperature of the system to be 30-60DEG C; (2) carrying out the enzymolysis: adjusting the pH value of the system to be 3.5-8.0, adding pectinase the weight of which is 0.1-2 percent that of the camellia seed kernels and carrying out the enzymolysis for 2-5h; (3) heating and centrifuging: treating the system at the temperature of 80-90DEG C for 5-15min after enzymolysis; and (4) recovering the grease and the active substances: in which, the centrifuged and separated system comprises boiled oil, liquid phase and residue, taking out ...

Controller for static reactive generator

Whole withstand voltage structure

The utility model discloses a whole withstand voltage structure, including the casing, insulating layer, unit, fastener, be equipped with the insulating layer on the casing, the insulating layer passes through the fastener to be fixed on the casing, is equipped with the unit on the insulating layer, is equipped with the clearance of certain distance between the unit. The utility model discloses not only being adapted to single electric elements withstand voltage and handling, the withstand voltage who is adapted to combination of a plurality of electric elements or whole functional module moreover handles.

Railway running control system

The railway command system includes dispatching extension, locomotive extension, station extension, locomotive depot extension and train crew head extension, and is characterized by that the radio interconnection between all the extensions can be implemented by means of GSM network capable of exchanging speech and literal information, and every extension also can be interconnected with other equippment by means of local area network.

Developments current -sharing control circuit

The utility model provides a power module, main switchboard and with that developments current -sharing control circuit, a control circuit wherein includes that a plurality of is parallelly connected sub - control panel, control switch that power module quantity is the same, the sub - control panel of main switchboard and each power module is through the communication transmission developments reference data that flow equalizes, dynamic current -sharing control after the output is passed through to each power module control switch realizes connecting in parallel between multiplexed output and any number's the power module, the utility model discloses still include an other control circuit. Adopt the utility model provides a control circuit can realize that a plurality of power modules can both reach the state of flow equalizing after making up wantonly, connect in parallel at random to the reliability that further guarantee is flow equalized.

System and method for treating liquid phase obtained in process course of extracting camellia oleosa seed oil by adopting aqueous enzymatic method

The invention discloses a system for treating a liquid phase obtained in a process course of extracting camellia oleosa seed oil by adopting an aqueous enzymatic method. The system comprises a liquid phase pretreatment system used for clarifying the liquid phase, a nanofiltration concentration and separation system used for concentrating the clear liquid phase, and a drying system. The system is simple in structure, a process is safe, equipment is convenient to operate,, the integrated solid recovery and water recycle can be achieved and the sample properties of a final product in the solid recovery is ensured. The invention further discloses a method for treating the liquid phase obtained by the system in the process course of extracting the camellia oleosa seed oil by adopting the aqueous enzymatic method. The method is not only used for avoiding technical problems of needing a large amount of organic solvents and complicated extraction process in a traditional saccharicterpenin extraction ...

A supplementary unsteady flow cabinet for diesel locomotive

The utility model discloses a supplementary unsteady flow cabinet for diesel locomotive, including the three -phase rectifier module, copped wave boost module and the three -phase contravariant module that connect gradually, the three phase current that three -phase rectifier module inserted diesel locomotive's interchange auxiliary generator output carries out the rectification, and mains voltage after the rectification exports the DC voltage of required size after copped wave boost module carries out copped wave and steps up, three -phase contravariant module is three -phase alternating current with the DC voltage contravariant of copped wave boost module output to offer the load of three -phase alternating current machine. The utility model has the advantages of can satisfy the power demand of high -power three -phase alternating current machine load, and simple structure, preparation and maintenance cost are low.

Controller for static reacance generator

The control device for static reactive generator includes input converter, memory, collator, phase angle regulator, reference sine voltage generator, pulse width regulator capable of making anisobaric bridge direct current bus voltage retain stable, crossing point voltage calculator, crossing point voltage arbiter, pulse edge selector capable of making all isobaric bridge direct current bus voltage retain equalization and bridge driving pulse generator. By adopting this control device all series direct current bus voltages still can basically retain stable when the output voltage and current are quickly changed so as to ensure that the output voltage waveform does not distort and the controlled static reactive generator can normally work.

Method for extracting grease in fructus cannabis by using aqueous enzymatic method and fructus cannabis protein drink

The invention discloses a method for extracting grease in fructus cannabis by using an aqueous enzymatic method. The method comprises the following steps: extruding, puffing and extracting fructus cannabis protein and grease, and performing enzymolysis and enzyme deactivation centrifugation, thereby obtaining free oil, a liquid phase and fructus cannabis residues after centrifugal separation; filtering the free oil, and performing dehydration treatment, thereby obtaining fructus cannabis oil, wherein the residues can be used as a feed raw material. The invention further provides a fructus cannabis protein drink which is prepared by recycling the liquid phase byproduct generated after the grease of fructus cannabis is extracted by using the aqueous enzymatic method, filtering the liquid phase, adding water and a sweetening agent, homogenizing, and sterilizing. The protein content of the drink is 3-8%, and compared with other fructus cannabis drinks sold on the market, the fructus cannabis ...

Dynamic current sharing control method and circuit

The invention relates to a dynamic current sharing control method and circuit. A control circuit comprises a plurality of power modules connected in series, a main control panel, sub control panels and control switches, wherein the sub control panels and the control switches are in same numbers of the power modules, dynamic current sharing reference data is transmitted between the main control panel and the sub control panel of each power module through communication, through each control switch at an output end, multiple output is achieved by each power module, and dynamic current sharing control after arbitrary numbers of the power modules are connected in series is achieved. The invention also comprises another control method and two control circuits. By adopting the control method and circuit disclosed by the invention, a current sharing state can be reached after the plurality of power modules are arbitrarily combined and randomly connected in series, and the reliability of current ...

一种水酶法从花生中提取油与水解蛋白的工艺

A process for extracting oil and hydrolytic protein from peanut by water-enzyme method includes such steps as extracting emulsified oil by use of alkaline proteinase, and demulsifying it by freezing and thawing to obtain free oil while recovering hydrolytic protein powder in the form of micropeptide. Its advantages are high oil output and high nutritive value.

Electronic equipment and single power module thereof

The utility model discloses a single power module for electric appliances, include: the power device layer, the power device layer includes the base plate and sets up temperature sampling part and the power device on the base plate, the power output layer that the setting is connected in power device layer top, with the power device layer, the the control unit layer that the setting is connected in power output layer top, with power device layer and power output layer. The inputoutput interface on power output layer sets up and corresponds the setting in the side on power output layer and with the interface of power device. The power output layer is the female row of individual layer. Female the arranging of individual layer is arranged for individual layer copper is female. The the control unit layer is provided with the adapting unit of vertical downward setting, adapting unit and power device layer fixed connection. The utility model also discloses an electronic equipment, electronic ...

Detection circuit and detection method for leakage current and insulation resistance of high-voltage equipment

The invention discloses a detection circuit and a detection method for leakage current and insulation resistance of high-voltage equipment, and the detection device comprises a control unit, a current detection unit, a voltage detection unit, a preset leakage current limiting resistor, and detection resistors corresponding to all power lines. Each power line is connected with one end of a preset leakage current limiting resistor through a corresponding detection resistor, the other end of the preset leakage current limiting resistor is connected with one end of a current detection unit, and the other end of the current detection unit is connected with a shell of the high-voltage equipment; the voltage detection unit is used for detecting the voltage between the power lines; the control unit is connected with the voltage detection unit and the current detection unit and used for obtaining the insulation resistance value of the insulation failure power line according to the leakage current ...

Fuel cell tram's power supply device

The utility model discloses a fuel cell tram's power supply device, including fuel cell power supply branch road above all the way, each way fuel cell power supply branch road includes interconnect's fuel cell system, direct current copped wave and voltage stabilizing module, and direct current copped wave and voltage stabilizing module pass through dc bus connected load, each way fuel cell power supply branch road passes through fuel cell system output DC power supply, through direct current copped wave module carry on that copped wave is stepped up and the steady voltage after the mains voltage of the required size of output, offer the load and supply power. The utility model has the advantages of stably just supply control is simple for simple structure compactness, low cost, power supply, can realize that the parallelly connected power output of multichannel is balanced simultaneously.

DC-DC power supply device

The invention relates to a DC-DC power supply device. The DC-DC power supply device comprises a tri-level voltage reducing circuit and an isolating circuit, wherein the input end of the tri-level voltage reducing circuit is connected to an input power supply, and the output end of the tri-level voltage reducing circuit is connected to the input end of the isolating circuit; and the output end of the isolating circuit is connected with a load. By adopting the circuits provided by the invention, switch tubes with lower voltage classes can be used, and then the switching frequency of the switch tubes are improved to the maximum extent, the sizes and weights of transformers, inductors and the like are reduced, the cost is reduced, volume production is facilitated, and the system safety operation on a low output voltage side is guaranteed.

Direct current electronics kilowatt -hour meter for diesel locomotive

The utility model discloses a direct current electronics kilowatt -hour meter for diesel locomotive, supply the cabinet including the diesel locomotive row, D. C. Current detecting circuit, direct current voltage detection circuit, the electric quantity gauge chip for receive real -time D. C. Current detecting circuit and direct current current data signal and direct current voltage data signal that direct current voltage detection circuit transmitted carry out analog -to -digital conversion to direct current current data signal and direct current voltage data signal and handle with filtering, and the direct current current data after will handling save in the D. C. Current detecting circuit 0 chip with direct current voltage data, control circuit for read the direct current current data and direct current voltage data after the modulus is handled from the electric quantity gauge chip, obtain total electric quantity according to direct current current data and direct current voltage data ...

Method for extracting grease from oil-tea camellia seed kernel and recovering saponin and saccharide active substances

The invention discloses a method for extracting grease from oil-tea camellia seed kernel and recovering saponin and saccharide active substances, comprising the following steps of: (1) crushing and tempering: with hull-removed oil-tea camellia seed kernels as raw materials, crushing and grinding the materials, adding water for uniformly stirring, wherein the quality-volume ratio of the oil-tea camellia seed kernels to the water is 1kg:2-8L and controlling the temperature of the system to be 30-60DEG C; (2) carrying out the enzymolysis: adjusting the pH value of the system to be 3.5-8.0, adding pectinase the weight of which is 0.1-2 percent that of the camellia seed kernels and carrying out the enzymolysis for 2-5h; (3) heating and centrifuging: treating the system at the temperature of 80-90DEG C for 5-15min after enzymolysis; and (4) recovering the grease and the active substances: in which, the centrifuged and separated system comprises boiled oil, liquid phase and residue, taking out ...

DC -DC continuous current plant

The utility model provides a DC -DC continuous current plant, includes three level reduction voltage circuit and buffer circuit, the input power is connected to the input of three level reduction voltage circuits, and buffer circuit's input is connected to the output, buffer circuit's output links to each other with the load. Adopt the utility model provides a circuit can use the more switch tube of low -voltage grade, and then the switching frequency of maximum improvement switch tube, reduces the volume and the weight of transformer, inductance etc. And reduce cost makes things convenient for batch production, guarantees the security of system operation of low output voltage side.