Wave energy utilizing apparatus

A wave energy utilizing device comprises at least one fixing piece, a floater, at least one energy transmitting unit and at least one rotating unit, wherein each fixing piece is used for fixing a seabed, the floater can be movably combined with the fixing pieces and is provided with a containing space and a control plate for controlling the sinking and the floatation of the floater relative to sea waves, each energy transmitting unit is combined with the floater, and rotating units can be movably combined with the energy transmitting units and is connected with an energy transformation unit through a shaft lever, thereby the floater can move up and down on the energy transmitting units through waves and enables the shaft lever of each rotating unit to rotate so as to utilize the energy transformation unit to transform energy.

Method for detecting parasitic loop of transformer station direct current system

The invention relates to a method for detecting a parasitic loop of a transformer station direct current system, and belongs to the field of electrical measurement. The method comprises the following steps that: a current sensor is set on a power output loop of the direct current system; the sensor measures the difference current of the system; a secondary coil of the sensor is used as a inductance coil of an active oscillator; a pulse counter measures the oscillation frequency of the active oscillator, and transmits the measured result to a microprocessor circuit for logic comparison; the microprocessor circuit sends an alarm signal if the change of the oscillation frequency of the active oscillator reaches a preset value; one loop of direct current power supply is switched off if the alarm signals appear on the two loops of power output loops at the same time; and the parasitic loop exists between the two power output loops if the alarm signals disappear on the two loops of power output ...

Method and apparatus capable of realizing safe hot plug of secondary current loop of transforming plant

The invention relates to a method and a device which can realize the safe hot plug of a secondary current circuit of a transformer substation, which belong to the field of safe devices. The device comprises an access terminal of a secondary circuit current transformer and a current transformer to be accessed, a plug-in spring assembly with a binary elastic contacts is arranged between connection terminals of the access terminal of the current transformer; meanwhile, a bidirectional diode set is arranged, and an insert plate with conducting layers which are arranged on both sides and mutually insulated is further arranged, and the conducting layers of the both sides of the insert plate are respectively electrically connected with two ends of a primary coil of the current transformer to be accessed. By adopting the double means of mechanical technology and electronic technology, the method and the device ensure that commissioning/disengaging of the secondary circuit is under the protection ...

Bath cap

The utility model relates to a bath cap, which comprises a cap brim and a cap tongue, wherein, the cap tongue and the cap brim are connected. The utility model is characterized in that the cap tongue is a waterproof cap tongue, the cap brim forms an arc shape, and an elastic band is connected with the back opening part of the cap brim; an elastic weather bar is fixed at the inner side of the cap brim, and the width of the elastic weather bar is equal to or greater than the width of the cap brim. When people bathing, the utility model can prevent hair washing water, especially hair washing soap water from flowing into eyes, which protects the eyes. The utility model is convenient for people to wash hair especially children to wash hair.

Method for inhibiting voltage transformer noise caused by DC magnetic biasing

The invention relates to a method of restricting the direct current magnetic bias to generate the noise of the transformer, which belongs to the emergency protection circuit device field. The invention comprises a stopping direct unit and a primary system fault protection unit, the invention is characterized in that two electrolytic capacitances with polarities are connected in series in an inverted polarity way, and a diode is in parallel connected at the both ends of each electrolytic capacitance in a reverted polarity way, so as to form a stopping direct unit; at least more than two diodes are connected in series in sequence in an identical direction way, so as to form an unidirectional overvoltage protection circuit, and two unidirectional overvoltage protection circuits are connected in parallel in a reverse direction way, so as to form a complete primary system fault protective unit. The continuity of the grounding circuit is guaranteed during the changing process of the grounding ...

Method for inhibiting voltage transformer noise caused by DC magnetic biasing

The invention relates to a method of restricting the direct current magnetic bias to generate the noise of the transformer, which belongs to the emergency protection circuit device field. The invention comprises a stopping direct unit and a primary system fault protection unit, the invention is characterized in that two electrolytic capacitances with polarities are connected in series in an inverted polarity way, and a diode is in parallel connected at the both ends of each electrolytic capacitance in a reverted polarity way, so as to form a stopping direct unit; at least more than two diodesare connected in series in sequence in an identical direction way, so as to form an unidirectional overvoltage protection circuit, and two unidirectional overvoltage protection circuits are connectedin parallel in a reverse direction way, so as to form a complete primary system fault protective unit. The continuity of the grounding circuit is guaranteed during the changing process of the grounding current ...

Energy-saving light emitting diode (LED) integrated sign with accident lighting and equipment nameplate functions

The invention discloses an energy-saving light emitting diode (LED) integrated sign with accident lighting and equipment nameplate functions and belongs to the field of lighting devices. A sign body is a transparent light guide panel; an equipment number is marked on the transparent light guide panel; LED light-emitting devices are arranged around the transparent light guide panel; the light-emitting surfaces of the LED light-emitting devices face the transparent light guide panel; the LED light-emitting devices are connected with a power supply of an emergency accident lighting device of a transformer substation through wires. When the emergency accident lighting device of the transformer substation is started, the LED light-emitting devices are energized to emit light to lighten the equipment number on the transparent light guide panel, convenience is provided for operators in reading an equipment number nameplate mark, and an accident emergency lighting source is provided for a part ...

Method for synthesizing 3-aminopyrrolidine and dihydrochloride thereof

Method and apparatus capable of realizing safe hot plug of secondary current loop of transforming plant

The invention relates to a method and a device which can realize the safe hot plug of a secondary current circuit of a transformer substation, which belongs to the field of safe devices. The device comprises an access terminal of a secondary circuit current transformer and a current transformer to be accessed, a plug-in spring assembly with a binary elastic contacts is arranged between connectionterminals of the access terminal of the current transformer; meanwhile, a bidirectional diode set is arranged, and an insert plate with conducting layers which are arranged on the two sides and mutually insulated is also arranged, and the conducting layers of the two sides of the insert plate are respectively and electrically connected with the two ends of a primary coil of the current transformer to be accessed. By adopting the double means of mechanical technology and electronic technology, the method and the device ensure that commissioning/disengaging of the secondary circuit is under theprotection ...

Portable intelligent DC earthing searching instrument

A portable intelligent DC grounding finder, relating to the field of testing short circuit, broken circuit, leakage or incorrect connection on electric instrument, lines or elements, and detecting the failure in cables, transmission lines or networks. The invention is composed of a hand-held set with a converted DC clip style meter and a DC insulation monitor base. The invention uses the clip style meter to correctly find the grounded DC lines and furthermore looks up the specific grounding points of instrument, and correctly finds out the grounding point without DC, even if eliminates the grounding failure under the condition wherein field conditions are allowable, thereby avoiding inconvenience of changing operation modes, revising fixed values and long working time for looking when applying power failure in the work program for finding the grounding, fast and correctly finding the grounding point, which is suitable for testing the short circuit, the broken circuit, leakage or incorrect ...

Portable intelligent DC earthing searching instrument

A portable intelligent DC grounding finder, relating to the field of testing short circuit, broken circuit, leakage or incorrect connection on electric instrument, lines or elements, and detecting the failure in cables, transmission lines or networks. The invention is composed of a hand-held set with a converted DC clip style meter and a DC insulation monitor base. The invention uses the clip style meter to correctly find the grounded DC lines and furthermore looks up the specific grounding points of instrument, and correctly finds out the grounding point without DC, even if eliminates the grounding failure under the condition wherein field conditions are allowable, thereby avoiding inconvenience of changing operation modes, revising fixed values and long working time for looking when applying power failure in the work program for finding the grounding, fast and correctly finding the grounding point, which is suitable for testing the short circuit, the broken circuit, leakage or incorrect ...

Method and device for automatically monitoring pollution of line insulators

The invention discloses a method and device for automatically monitoring the pollution of line insulators, and belongs to the field of detection. The method includes the steps that an on-site monitoring device is hung on a line wire at the lower end of each set of insulators, and an opening CT is arranged on a hanging hook to be used for collecting the induced current on an electric transmission line; a leakage current CT is arranged at the connecting position of the line insulators and the line wire; a temperature and humidity sensor, a sound sensor, a pre-signal processing unit, a CPU unit, a wireless signal sending module and a transmitting antenna are arranged in the on-site monitoring device; the induced current collected by the opening CT provides working power for the on-site monitoring device after rectification and voltage stabilization are conducted, the on-site monitoring device collects an output signal of the leakage current CT, an output signal of the temperature and humidity ...

Shenji ointment and preparing process thereof

A Shenji Ointment for delaying skin senility, and preventing and treating chloasma, senile plaque, rhagas, etc contains ginsenoside (0.1-3%), hippophae rhamnoides oil (0.5-20%) and matrix (the rest).

Method for detecting parasitic loop of transformer station direct current system

The invention relates to a method for detecting a parasitic loop of a transformer station direct current system, and belongs to the field of electrical measurement. The method comprises the following steps that: a current sensor is set on a power output loop of the direct current system; the sensor measures the difference current of the system; a secondary coil of the sensor is used as a inductance coil of an active oscillator; a pulse counter measures the oscillation frequency of the active oscillator, and transmits the measured result to a microprocessor circuit for logic comparison; the microprocessor circuit sends an alarm signal if the change of the oscillation frequency of the active oscillator reaches a preset value; one loop of direct current power supply is switched off if the alarm signals appear on the two loops of power output loops at the same time; and the parasitic loop exists between the two power output loops if the alarm signals disappear on the two loops of power output ...

Buoyancy kinetic energy device

The utility model provides a buoyancy kinetic energy device for solve the not good problem of efficiency that current buoyancy kinetic energy device produced kinetic energy, the utility model discloses a buoyancy kinetic energy device contains: a base has a cistern, turning for one, having a rotatory body and an axial region, this axial region combines to be somebody's turn to do rotatory body and this cistern, and this rotation body is rotatably located in this cistern by this axial region, this rotation body is located to a float, telescopically, and a flexible control module, locate this cistern to it is flexible for this rotatory body in this rotatory this float of this trunk circling time control system.

Method for detecting earth fault of direct current system by utilizing frequency deviation method

The invention discloses a method for detecting earth fault of a direct current system by utilizing a frequency deviation method, belonging to electrical measurement field. The method is as follows: a sensor is arranged in a direct current output circuit to measure differential current flowing through the circuit of the sensor, the secondary of the sensor is utilized as the inductance coil of an active oscillator, a pulse counter is utilized for colleting the oscillation frequency of the active oscillator, and the oscillation frequency and the reference frequency of the active oscillator are compared by a microprocessor; if the frequency of the active oscillator is larger than a set value, a trigger signal is output and an alarming device is started to output an alarm signal; and field staff can rapidly find the position of an earth-return circuit according to the indication of an alarm lamp. The method not only overcomes the harm caused by that earth fault is searched by interrupting each ...

Current-voltage integrated digital mutual inductor

The invention relates to the field of power electronics, in particular to a digital mutual inductor. The current-voltage integrated digital mutual inductor comprises a power supply part, a high-voltage cable inlead, an analog to digital (A/D) conversion part, a signal sampling part and a signal output part, wherein the A/D conversion part connected wit the power supply part is connected with the signal sampling part, and the signal sampling part is connected with the high-voltage cable inlead used for connecting with a high-voltage cable; the A/D conversion part is also connected with the signal output part which outputs signals to the outside; the power supply part also comprises a power supply transformer; and one end at the primary side of the power supply transformer is connected with the high-voltage cable inlead, and the other end is grounded through a high-voltage capacitor. The current-voltage integrated digital mutual inductor utilizes the current of the high-voltage capacitor ...

Method for synthesizing 3-aminopyrrolidine and dihydrochloride thereof

The invention relates to a synthetic method for synthesizing 3-aminopyrrolidine and dihydrochloride. Benzyl amine, ethyl acrylate and ethyl chloroacetate are taken as the starting material, and the 3-aminopyrrolidine and the dihydrochloride are obtained through addition, link sum, hydrolization, and hydrogenation (two steps).

Method and device for monitoring running state of transforming station direct current system

The invention provides a monitoring method for the running state of a substation DC system, belonging to the measurement field. The monitoring method comprises the following steps of: detecting the bus voltage of the DC system, and comparing and outputting the overvoltage/undervoltage alarm signal; the DC component of the bus voltage is detected, meanwhile, the AC component Uac of the bus voltage is also detected by a DC block; the absolute value of the Uac' and the set value Uac'' are compared; if the absolute value of the Uac' is more than the Uac', the control unit outputs a ripple voltage over-limit alarming signal. The invention also provides a monitoring device used for monitoring the running state of the DC system. The monitoring method and the monitoring device realize the dual monitoring function on the DC system, have an effect of dual-use with one machine, provide more effectively ensuring for the safe and stable running of the DC system, reduce the number of the monitoring device ...

Method and device for preventing direct-current system of power transformation and distribution substation from powering off during storage battery maintenance

The invention relates to a method and a device for preventing a direct-current system of a power transformation and distribution substation from powering off during storage battery maintenance, belonging to the field of direct-current power supplies. The method comprises the following steps of: connecting a storage battery current relay between the anode and the cathode of a storage battery adjacent to the storage battery to be replaced to structure a direct-current bypass loop; making the charging/discharging current of a storage battery pack of the direct-current system circulate in the storage battery to be replaced by using the storage battery current relay; replacing the storage battery to be replaced; and after finishing the maintaining work, removing the electrical connection between the storage battery current relay and the storage battery loop, thereby ensuring that the original circulating loop of the charging current or discharging current of the storage battery pack of the direct-current ...

Method of warning on poor contact of primary loop of power equipment

The invention belongs to the field of emergency warning and provides a method of warning on poor contact of a primary loop of power equipment. A temperature sensing sealed packet is provided; the temperature sensing sealed packet is provided with an open seam filled with low melting point melt so that a cavity that is closed at the normal temperature is formed; the cavity is filled with irritant gas; the temperature sensing sealed packet is disposed at the contact of the primary loop; a gas-sensitive probe is disposed inside a substation; if the contact of the primary loop has a temperature higher than the melting temperature of the low melting point metal, the low melting point metal in the open seam melts, and the irritant gas in the temperature sensing sealed packet leaks out; the gas-sensitive probe sends out a signal to remind operators of checking the 'poor contact' fault of primary equipment; heating fault caused by poor contact of the primary equipment is discovered by the non-electric-medium ...

Wave energy collecting device

The invention relates to a wave energy collecting device which comprises a supporting assembly, a floating body and an energy storage unit. The supporting assembly is fixed on a seabed; the floating body can be combined with the supporting assembly in a pivoting mode; the energy storage unit is used for carrying out energy storage action by matching with the floating body, so that the floating body can be more easily pushed by waves to carry out to-and-fro pivot swing motion so as to achieve the efficacy of enhancing the energy recovery effect; and in addition, the wave energy collecting device also comprises a guide assembly, wherein the guide assembly comprises a plurality of guide plates combined with the supporting assembly, a guide space is formed between every two adjacent guide plates, and the guide space is positioned at one side of the floating body so as to concentratively guide the waves to the position of the floating body through the supporting assembly, thereby more effectively ...