Full-size bending test device for marine line pipes

The utility model provides a full-size bending test device for marine line pipes, which comprises a load bearing beam. A hydraulic cylinder is fixed in the middle of the load bearing beam and provided with a bending die support. A bending die is arranged on the bending die support. Supporting pipes are respectively fixed on two sides of the load bearing beam. Pulling boards are symmetrically and respectively fixed at the joint positions of the supporting tubes and the load bearing beam. The full-size bending test device for the marine line pipes has the advantages that the test device is applied to simulating stress conditions of the line pipes in pipe winding operation; a bending device is suitable for a uniform large plastic bending test of marine line pipes with a caliber smaller than 323mm; and the full-size bending test device for the marine line pipes is simple in operation, has functions of accurate control of a computer, automatic data collection, reversed loading bending and the ...

Method for detecting network variation of data communication network system and router

The invention provides a method for measuring the network change in a data communication network system including a plurality of routers. The method comprises the following steps: establishing electrical connection among the routers; detecting the DC balance of each port of the routers used for the electrical connection to determine whether the DC balance of a certain router is changed; if the DC balance change exists, indicating that the network change occurs in the data communication network system. The invention further provides a method for configuring the routers in the data communication network system, and the method is used for re-configuring the routers with the changed DC balance and sending the changed configuration information to the related router. The method is used for detecting the network change in the data communication network system by adopting the DC detection, and re-configuring the routers with the changed DC balance, so that the related router can rapidly acquire ...

Jet pipe used for dredging below hydraulic underwater horizontal gate and application method thereof

The invention discloses a jet pipe used for dredging below a hydraulic underwater horizontal gate. The tube body of the tube is cylindrical; openings are reserved at two ends of the tube body and the tube body is hollow; n upper openings with the same diameter are sequentially arranged on one side face of the tube body along the length direction of the tube body at equal interval, wherein n is a natural number; and a lower opening having the same diameter as that of the upper opening is arranged below the middle of the connecting line between circle centres of every two neighbouring upper openings, wherein the central connecting line of each upper opening and the central connecting line of the lower opening are parallel to a long edge of the tube body respectively. The jet pipe of the invention disturbs water flow under the gate by using different positions of jet holes, under the gate, of the jet pipe under the gate and a disturbed flow state reaches a starting flow speed of silt under ...

Suspension type fish guiding device and method for using same to guide fishes

Disclosed is a suspension type fish guiding device. The suspension type fish guiding device is composed of a bottom seat fixedly installed at a water bottom, a suspension turbulence disturbance device which is suspended in water and changes water flow along with free movement of the water flow and a connection segment connected between the bottom seat and the suspension turbulence disturbance device. The invention further discloses a method for using the suspension type fish guiding device to achieve fish luring or fish driving. The method for using the suspension type fish guiding device to achieve the fish luring or the fish driving includes: arranging a plurality of the suspension type fish guiding devices at the water bottom, disturbing the water flow, changing distribution of vertical flow velocity fields of the water flow, forming shear flow, changing existing turbulent fluctuation distribution and magnitude of the water flow, directly influencing a local flow field of survival of ...

Be applied to unpowered rivers attracting device of transporting something containerized fish system

The utility model provides a be applied to unpowered rivers attracting device of transporting something containerized fish system, the device includes install and say two guide plates along fish gathering ship hull axis symmetrical arrangement of import department in fish gathering ship hull upper reaches fish gathering cabin, the guide plate rotates with fish gathering ship hull through rotation circle axle to be connected, and backup pad one end is connected with the guide plate, the backup pad other end and fish gathering ship ship body connected, bottom fixed mounting has the bottom guide plate in the cabin way import of hull fish gathering. The utility model provides a pair of be applied to unpowered rivers attracting device of transporting something containerized fish system can solve the problem of noise and vibration, through the corner of change bit in the guide plate at the hull upper reaches, controls the water flow in the fish passageway to the change that utilizes this flow ...

Responding to change in a data communication network system

A method and system for responding to changes in the system. The system includes two or more routers which are electrically connected together in a network tree structure. Each router includes an electronic connection port and a routing table. A direct current balance exists at the electronic connection port of each route. A change in the direct current balance at the electronic connection port of at least one router of the two or more routers is detected. An occurrence of changes in the system that relate to each router of the at least one router is ascertained from the detecting. Responsive to the ascertaining, a new routing table is generated for each router of the at least one router. Each new table includes the changes in the system that relate to each route of the at least one router.

Jelly glue, preparation method and optical microlens array prepared from jelly glue

The invention discloses jelly glue, which is prepared from the following ingredients in parts by mass: 35 to 60 parts of resin powder, 35 to 90 parts of active monomers, 2 to 10 parts of photoinitiators and 5 to 15 parts of light stabilizers. The jelly glue disclosed by the invention can replace a plastic lens, can be arbitrarily shaped before being cured and is not adhered to various metal plastic molds, and after being cured, the jelly glue has strong adhesion to metal ink, is tough and is deformation-resistant. The one-step formed optical micro-lens array prepared from the jelly glue is good in transmittance, haze and yellowing resistance and can be applied to min LED chips, packaging and mirror forming can be completed at the same time, the production efficiency can be greatly improved, and therefore the production cost is reduced.

Experimental petroleum casing pipe heterogeneous dilute alloy welding structure under large alternating load and method thereof

Jet pipe used for dredging below hydraulic underwater horizontal gate and application method thereof

The invention discloses a jet pipe used for dredging below a hydraulic underwater horizontal gate. The tube body of the tube is cylindrical; openings are reserved at two ends of the tube body and the tube body is hollow; n upper openings with the same diameter are sequentially arranged on one side face of the tube body along the length direction of the tube body at equal interval, wherein n is a natural number; and a lower opening having the same diameter as that of the upper opening is arranged below the middle of the connecting line between circle centres of every two neighbouring upper openings, wherein the central connecting line of each upper opening and the central connecting line of the lower opening are parallel to a long edge of the tube body respectively. The jet pipe of the invention disturbs water flow under the gate by using different positions of jet holes, under the gate, of the jet pipe under the gate and a disturbed flow state reaches a starting flow speed of silt under ...

Open channel torrent controlling means

The utility model provides an open channel torrent controlling means, the control panel, intake and hold and go out the water end (W. E. ), pass through the control panel, the end of intaking makes upland water through anomalous runoff cross -section production torrent the field coarse or curved surface with the play water end (W. E. ), produce a layer effect through the rivers of flowing throughon the control panel border, rivers along the open channel produce a strong torrent field and last the decay along the disorderly fatigue resistance of journey, form flow characteristic, the end makesrivers streamline and the pertinent linking of torrent control panel with the play water end (W. E. ) through intaking, the rivers that the control panel is pressed close to to the wall torrent produce different surface characteristics constrained control rivers, reach and control the turbulent detection of wall. The utility model overcomes the problem that data low resolution, error are big thatformer ...