8results about How to "Large flow" patented technology

The invention discloses a connecting device of a shell protection integrated bus duct, and belongs to the technical field of power transmission and distribution equipment, the connecting device comprises a connector, bus duct shells, conductors and joint side plates, the conductors and the joint side plates are arranged in the bus duct shells, the connector is used for connecting the conductors in the adjacent bus duct shells, and first sealing strips are arranged between the joint side plates and the bus duct shells; the first sealing strip comprises a first sealing part and a second sealing part; the first sealing part extends along the surface of the bus duct shell to seal a gap between the bus duct shell and the joint side plate; the second sealing part is bent relative to the first sealing part and extends along the surface of the joint side plate to separate the conductor from the joint side plate; all butt-joint conductors, penetrating out of the bus duct shell, at the connector are further provided with insulation isolation pieces which are used for flexible self-adaptive sealing and isolation of butt-joint positions during butt-joint connection and are used for mutual insulation and isolation between adjacent conductors. The connecting device enables the bus duct to realize butt joint sealing and insulation protection functions at the same time, and solves the problem that the bus duct in the prior art cannot have sealing and protection functions at the same time.

This invention provides a method for replacing a diaphragm valve and its valve seat. The diaphragm valve can suppress valve seat crushing or deformation even when performing high-speed opening and closing operations at high temperatures, and can stably ensure a high Cv value without fluctuation when operating at high flow rates. The valve seat is easy to replace. The present invention is a diaphragm valve (1), characterized in that it comprises: an outer wall portion (20) for assembling a valve seat provided in a primary side opening (13) within a main body (2); a stepped portion (21) provided in the inner periphery of the outer wall portion (20); a seat ring (4) pressed and fixed to the stepped portion (21); a flange portion (32) provided in the seat ring (4); and a pressing groove (42) for assembling a valve seat formed between the seat ring (4) and the outer wall portion (20) with the flange portion (32) as the bottom. The valve seat (3) is pressed and fixed to the pressing groove (42) such that the upper part of the valve seat (3) is slightly protruding, with the extension portion (27) of the outer periphery of the upper part of the valve seat (3) covering the position near the top (23) of the outer wall portion (20) and the extension portion (28) of the inner periphery of the upper part of the valve seat (3) covering the position near the top (35) of the seat ring (4).

The invention discloses a high-integration carrier plate and a manufacturing method thereof, the carrier plate is used for a power module, the carrier plate comprises at least one hollow area, an inductance element is arranged in the hollow area, the inductance element comprises a magnetic core and a winding penetrating through the magnetic core, and the winding penetrates through the magnetic core. A side wall metal piece is arranged on at least one part of the side wall of the hollow area, at least one side wall metal piece is used for being electrically connected with an electrostatic potential end of the power supply module, and the inductance element is fixedly connected with the side wall of the hollow area through an insulated bonding medium layer. The inductance element is embedded in the printed circuit layer substrate, a smaller Vin-GND loop is achieved through wiring of the printed circuit layer substrate frame, and parasitic parameters are reduced.

The utility model provides an assembly type bioretention facility which comprises an overflow well, a plurality of water storage modules are arranged on the periphery of the overflow well, and the water storage modules are fixedly connected with the adjacent water storage modules or the overflow well and internally communicated with the adjacent water storage modules or the overflow well. The device is characterized in that a trigger opening and closing module is arranged at the top of the water storage module, and the trigger opening and closing module can automatically adjust the through flow of the trigger opening and closing module according to the liquid level in the trigger opening and closing module while absorbing water in surrounding soil; by arranging the triggering opening and closing module, water in soil is introduced into the triggering cavity through a capillary drainage belt, when the water amount in the triggering cavity is increased to enable an opening and closing block to move, the opening and closing block is opened, a through-flow opening in the top of the water storage module is opened, and the through-flow amount of the water storage module is increased; rainwater can rapidly enter the water storage module through the through-flow opening in the top of the water storage module, so that rapid collection and emptying of the rainwater are achieved, the rainwater is not affected by new installation or long-time use, and it is guaranteed that the rainwater emptying time is still within the preset time period.

The utility model discloses a differential hydraulic cylinder control system for a pile hammer. A hydraulic power oil source is communicated with a lower cavity of a hydraulic cylinder and a differential cartridge valve working cavity of a differential cartridge valve; an upper cavity of the hydraulic cylinder is communicated with a differential cartridge valve annular cavity of the differential cartridge valve and an oil return cartridge valve working cavity of the oil return cartridge valve, and an oil return cartridge valve annular cavity of the oil return cartridge valve is communicated with an oil tank. A hydraulic power oil source leads to a pressure oil port P of a differential control electromagnetic valve, a working oil port A of the differential control electromagnetic valve is communicated with a differential cartridge valve control cavity of the differential cartridge valve, and an oil return port T of the differential control electromagnetic valve leads to an oil tank. The hydraulic power oil source further leads to a pressure oil port P of the oil return control electromagnetic valve, a working oil port A of the oil return control electromagnetic valve is communicated with an oil return cartridge valve control cavity of the oil return cartridge valve, and an oil return port T of the oil return control electromagnetic valve leads to the oil tank. The control system is large in through flow, sensitive in action, safe and reliable, and control over oil pressure and flow is conveniently achieved.

The utility model discloses a kind of shell protection integrated bus duct with equipotential connection, for the equipotential protection of adjoining bus duct, including first bus duct, second bus duct and bus duct connector, two adjacent first bus duct and second bus duct between joint busbar are locked connection by bus duct connector;At least one ground connection is connected on the top side cover plate of first bus duct or and second bus duct, and the equipotential terminal for the ground safety of busbar power transmission loop between all adjacent bus ducts;At least one ground cable line for preventing current overload is connected on the equipotential terminal;Effectively increase the leakage current flow of shell and the safety of busbar power transmission loop ground, reduce the probability of single-phase ground leakage, effectively improve the efficiency of ground protection.

The present invention discloses a sand-throwing fire extinguisher impeller rotation control valve group and a hydraulic system. The sand-throwing fire extinguisher impeller rotation control valve group includes a solenoid valve, a relief valve, a first logic valve and an electro-hydraulic reversing valve; the hydraulic system includes a sand-throwing fire extinguisher impeller rotation control valve group, a variable plunger pump, a quantitative gear pump and an externally controlled oil source valve. The present invention can realize the rotation speed change requirements of the impeller, reverse the impeller in the case of material blockage, and help the material to be discharged; the sand-throwing fire extinguisher impeller rotation control valve group can realize more energy saving when the system is unloaded, prevent impact protection system when the system overflows, and prevent system air suction caused by inertial rotation when the system is replenished with oil. The externally controlled external leakage electro-hydraulic reversing valve has a large flow rate, strong interchangeability, and better reversing performance, which provides a strong guarantee for the realization of the functions of the sand-throwing fire extinguisher.

The application discloses a radiofrequency catheter capable of clamping tissues, which comprises a handle assembly, an inner tube, a distal electrode assembly, a proximal electrode assembly and an outer tube arranged in sequence from inside to outside; the proximal ends of the inner tube and the outer tube are connected to the handle assembly; the distal electrode assembly comprises a distal stent and a distal electrode; the proximal electrode assembly comprises a proximal stent and a proximal electrode; the distal stent and the proximal stent both have a retracted state of being retracted into the outer tube and an unfolded state of being unfolded and expanded outward after being extended out of the outer tube; when the distal stent and the proximal stent are both in the unfolded state, the distal stent and the proximal stent can clamp the atrial septum tissue on opposite sides of the atrial septum tissue; the distal electrode and the proximal electrode are firmly attached to the atrial septum tissue; during radiofrequency ablation, the distal electrode and the proximal electrode are electrified, the heat ablation effect on the atrial septum tissue is more obvious, and the deep tissue of the atrial septum is necrotic after heat ablation, which helps to delay the closure of the shunt hole and makes the patient benefit for a long time.