Quick reversing valve group of gas machine

Abstract

The utility model relates to a quick reversing valve group of a gas machine. The quick reversing valve group comprises an electromagnetic reversing valve, a hydraulic control reversing valve and a valve block, the whole valve block is in a cuboid shape, a port P and a port T are formed in one side face of the valve block, and a port A and a port B are formed in the face, away from the port P and the port T, of the valve block. An electromagnetic reversing valve is mounted on one end face of the valve block, and the hydraulic control reversing valve is mounted on one end face, far away from the electromagnetic reversing valve, of the valve block; the port P, the port T, the port A and the port B are all communicated with the hydraulic control reversing valve; the P port is communicated with the electromagnetic reversing valve, and the electromagnetic reversing valve is communicated with a pilot cavity of the hydraulic control reversing valve. The fast reversing valve group has the advantages that the problems that an oil cylinder for distributing natural gas of the gas machine is slow in reversing and poor in stability are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic control valve groups, and more specifically to a gas engine quick reversing valve group. Background Art

[0002] In existing technology, rapid reversing valves are used as cylinder actuators for natural gas distribution in gas generators. Gas generators place high demands on the reversing speed of the cylinders used to distribute natural gas. This directly translates into control requirements for the hydraulic cylinders to be able to quickly reverse under high flow conditions to ensure rapid natural gas distribution.

[0003] However, in the prior art, the reversing of the oil cylinder for distributing natural gas in the gas generator is slow and the stability is poor. Therefore, it is very necessary for the gas generator fast reversing valve group to have a stable large flow direction switching function.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] The utility model aims to provide a gas engine quick reversing valve group, which solves the problem of slow reversing and poor stability of the oil cylinder of the gas engine distributing natural gas.

[0006] The utility model provides a gas engine rapid reversing valve group, comprising an electromagnetic reversing valve, a hydraulically controlled reversing valve and a valve block; the valve block is in the shape of a rectangular parallelepiped as a whole, and is provided with a P port and a T port on one side surface of the valve block, and is provided with an A port and a B port on a side of the valve block away from the P port and the T port; the electromagnetic reversing valve is installed on one end surface of the valve block, and the hydraulically controlled reversing valve is installed on the end surface of the valve block away from the electromagnetic reversing valve; the P port, the T port, the A port and the B port are all connected to the hydraulically controlled reversing valve; the P port is connected to the electromagnetic reversing valve, and the electromagnetic reversing valve is connected to a pilot chamber of the hydraulically controlled reversing valve.

[0007] By adopting the above technical solution, when the electromagnetic reversing valve is not energized, the oil enters the valve block through the P port, and enters the oil cylinder from the A port after passing through the hydraulically controlled reversing valve; the oil pushes the oil cylinder to operate and then returns to the valve block from the B port, and returns to the oil tank from the T port after passing through the hydraulically controlled reversing valve; when the electromagnetic reversing valve is energized, the oil in the P port enters the pilot chamber of the hydraulically controlled reversing valve through the electromagnetic reversing valve, pushes the hydraulically controlled reversing valve to overcome the spring force and then reverse direction, and enters the oil cylinder from the B port; the oil pushes the oil cylinder to operate and then returns to the valve block from the A port, and returns to the oil tank from the T port after passing through the hydraulically controlled reversing valve.

[0008] Furthermore, the gas engine rapid reversing valve group also includes a relief valve, which is installed on the end face of the valve block and is located next to the hydraulically controlled reversing valve. The relief valve is connected to the P port.

[0009] With the above technical solution, the relief valve protects the P-port pressure from exceeding 158 bar. When the cylinder operating pressure is too high, causing the P-port pressure to exceed 158 bar, the relief valve automatically opens to allow excess oil to return to the tank. The relief valve can protect system components from damage.

[0010] Furthermore, the gas engine rapid reversing valve group further comprises a proportional valve, which is mounted on the end face of the valve block and next to the electromagnetic reversing valve.

[0011] Using this technical solution, the proportional valve drains excess oil from the system to the tank. The controller outputs current to the proportional valve, controlling the valve opening and draining excess oil to the tank. When the cylinder is not in operation, the proportional valve can be opened to its maximum opening, reducing the oil inlet pressure and ensuring energy savings. When the cylinder is in operation, the proportional valve can be closed to an appropriate opening, or even completely shut, reducing oil return to the tank and ensuring that the cylinder's switching speed meets the requirements of natural gas distribution.

[0012] Furthermore, the gas engine rapid reversing valve group further includes a pressure sensor, which is installed on the end face of the valve block and next to the proportional valve.

[0013] By adopting the above technical solution, the pressure sensor can convert the pressure of the oil inlet into an electrical signal in real time and send it to the controller so that the controller can monitor the working pressure of the oil cylinder distributing natural gas in real time.

[0014] Furthermore, four mounting holes and one process hole are provided on the same side of the valve block at the A port and the B port, and the process holes are blocked by steel plugs.

[0015] Furthermore, three process holes are provided on both sides of the valve block, and the process holes are blocked with steel plugs; wherein a damping hole is built into the process hole near one end of the hydraulically controlled reversing valve.

[0016] Furthermore, three process holes are provided on the same side of the valve block at the P port and the T port, and the process holes are blocked by steel plugs; wherein, a damping hole is built into the process hole close to the T port.

[0017] Furthermore, a process hole is provided on the same end face of the valve block as the hydraulically controlled reversing valve, and the process hole is blocked with a steel plug.

[0018] Furthermore, three process holes are provided on the same end face of the valve block as the electromagnetic reversing valve, and the process holes are blocked with steel plugs.

[0019] The utility model relates to a gas engine rapid reversing valve assembly. A pressure sensor can convert the oil inlet pressure into an electrical signal in real time and transmit it to a controller, allowing the controller to monitor the operating pressure of the natural gas distribution cylinder in real time. A proportional valve is used to discharge excess oil from the system to the fuel tank. When the cylinder does not need to be operated, the proportional valve can open the valve port to its maximum, reducing the oil inlet pressure and ensuring energy conservation. When the cylinder is operating, the proportional valve can close the valve port to an appropriate size, or even completely, reducing the amount of oil returning to the tank and ensuring that the cylinder's reversing speed meets the requirements of natural gas distribution. A relief valve can protect system components from damage. Damping can be used to adjust the reversing time. A hydraulically controlled reversing valve controls the smoothness of rapid reversing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a gas engine quick reversing valve group provided in an embodiment of the utility model.

[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the gas turbine quick reversing valve group from another perspective.

[0022] Figure 3 for Figure 1 A structural diagram of the gas turbine's quick reversing valve group from another perspective.

[0023] Figure 4 for Figure 1 A structural diagram of the gas turbine's quick reversing valve group from another perspective.

[0024] The reference numerals and components in the drawings are as follows:

[0025] 100, electromagnetic reversing valve 200, hydraulic control reversing valve 300, valve block

[0026] 310, P port 320, T port 330, A port

[0027] 340, B port 400, relief valve 500, proportional valve

[0028] 600, pressure sensor 700, mounting hole 800, process hole DETAILED DESCRIPTION

[0029] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] The terms "first", "second", "third", "fourth", etc. in the description and claims of the present utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0031] Example 1

[0032] Figure 1 This is a schematic diagram of the structure of the gas engine quick reversing valve group provided by the embodiment of the utility model. Figure 2 for Figure 1 Another structural diagram of the gas engine quick reversing valve group from another perspective, Figure 3 for Figure 1 Another structural diagram of the gas turbine quick reversing valve group from another perspective. Figure 4 for Figure 1 Another perspective of the structural diagram of the gas engine quick reversing valve group. Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 The gas engine rapid reversing valve group provided by the embodiment of the present utility model includes an electromagnetic reversing valve 100, a hydraulically controlled reversing valve 200 and a valve block 300; the valve block 300 is generally in the shape of a rectangular parallelepiped, and a P port 310 and a T port 320 are provided on one side surface of the valve block 300, and an A port 330 and a B port 340 are provided on a side surface of the valve block 300 away from the P port 310 and the T port 320; the electromagnetic reversing valve 100 is installed on one end surface of the valve block 300, and the hydraulically controlled reversing valve 200 is installed on the end surface of the valve block 300 away from the electromagnetic reversing valve 100; the P port 310, the T port 320, the A port 330 and the B port 340 are all connected to the hydraulically controlled reversing valve 200; the P port 310 is connected to the electromagnetic reversing valve 100, and the electromagnetic reversing valve 100 is connected to the pilot chamber of the hydraulically controlled reversing valve 200.

[0033] It should be noted that when the solenoid reversing valve 100 is de-energized, oil enters the valve block 300 through the P port 310, passes through the hydraulically controlled reversing valve 200, and enters the oil cylinder from the A port 330. After the oil pushes the oil cylinder to operate, it returns to the valve block 300 from the B port 340, passes through the hydraulically controlled reversing valve 200, and returns to the oil tank from the T port 320.

[0034] When the solenoid reversing valve 100 is energized, the oil in the P port 310 enters the pilot chamber of the hydraulically controlled reversing valve 200 through the solenoid reversing valve 100, pushing the hydraulically controlled reversing valve 200 to overcome the spring force and then reverse direction, and enters the oil cylinder from the B port 340; after pushing the oil cylinder to operate, the oil returns to the valve block 300 from the A port 330, and returns to the oil tank from the T port 320 after passing through the hydraulically controlled reversing valve 200.

[0035] The gas engine rapid reversing valve group of the present invention controls the stability during rapid reversing through the hydraulically controlled reversing valve 200 .

[0036] Furthermore, the gas engine rapid reversing valve group further includes a relief valve 400 , which is installed on the end face of the valve block 300 and is located next to the hydraulically controlled reversing valve 200 . The relief valve 400 is communicated with the P port 310 .

[0037] It should be noted that the relief valve 400 protects the pressure of the P port 310 from exceeding 158 bar. When the working pressure of the cylinder is too high, causing the pressure of the P port 310 to exceed 158 bar, the relief valve 400 automatically opens to allow excess oil to return to the tank. The relief valve 400 can protect the system components from damage.

[0038] Furthermore, the gas engine rapid reversing valve assembly further includes a proportional valve 500 , which is installed on the end face of the valve block 300 and is located next to the electromagnetic reversing valve 100 .

[0039] It should be noted that proportional valve 500 discharges excess oil from the system to the tank. Specifically, the controller can output current to proportional valve 500 to control the valve opening size, thereby discharging excess oil from the system to the tank. When the cylinder does not need to be actuated, proportional valve 500 can be opened to its maximum opening, reducing the oil inlet pressure and ensuring energy conservation. When the cylinder is actuated, proportional valve 500 can be closed to an appropriate opening, or even completely closed, to reduce oil return to the tank and ensure that the cylinder's switching speed meets the requirements of natural gas distribution.

[0040] Furthermore, the gas engine rapid reversing valve group further includes a pressure sensor 600 , which is mounted on the end face of the valve block 300 and is located next to the proportional valve 500 .

[0041] In the circuit of the present invention, the pressure sensor 600 can convert the pressure of the oil inlet into an electrical signal in real time and send it to the controller so that the controller can monitor the working pressure of the oil cylinder that distributes natural gas in real time.

[0042] Furthermore, four mounting holes 700 and one process hole 800 are provided on the same side of the valve block 300 located at the A port 330 and the B port 340, and the process holes 800 are blocked by steel plugs; three process holes 800 are provided on both sides of the valve block 300, and the process holes 800 are blocked by steel plugs; wherein, a damping hole is built into the process hole 800 at one end close to the hydraulically controlled reversing valve 200; and a damping hole is built into the process hole 800 at the P port 310 and the T port of the valve block 300. Three process holes 800 are provided on the same side of 320, and the process holes 800 are blocked by steel plugs; among them, the process hole 800 close to the T-port 320 is equipped with a damping hole; one process hole 800 is provided on the same end face of the valve block 300 as the hydraulically controlled reversing valve 200, and the process hole 800 is blocked by a steel plug; three process holes 800 are provided on the same end face of the valve block 300 as the electromagnetic reversing valve 100, and the process holes 800 are blocked by steel plugs.

[0043] It should be noted that the built-in damping of the valve block 300 can adjust the switching time; the greater the damping, the longer the switching time; conversely, the smaller the damping, the shorter the switching time.

[0044] Based on the above description, it can be seen that the advantages of the present invention are:

[0045] The utility model relates to a gas engine rapid reversing valve assembly. A pressure sensor can convert the oil inlet pressure into an electrical signal in real time and transmit it to a controller, allowing the controller to monitor the operating pressure of the natural gas distribution cylinder in real time. A proportional valve is used to discharge excess oil from the system to the fuel tank. When the cylinder does not need to be operated, the proportional valve can open the valve port to its maximum, reducing the oil inlet pressure and ensuring energy conservation. When the cylinder is operating, the proportional valve can close the valve port to an appropriate size, or even completely, reducing the amount of oil returning to the tank and ensuring that the cylinder's reversing speed meets the requirements of natural gas distribution. A relief valve can protect system components from damage. Damping can be used to adjust the reversing time. A hydraulically controlled reversing valve controls the smoothness of rapid reversing.

[0046] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A gas engine quick reversing valve group, characterized in that: It comprises an electromagnetic reversing valve (100), a hydraulically controlled reversing valve (200) and a valve block (300); The valve block (300) is in the shape of a rectangular parallelepiped as a whole. A P port (310) and a T port (320) are provided on one side of the valve block (300). An A port (330) and a B port (340) are provided on a side of the valve block (300) away from the P port (310) and the T port (320). An electromagnetic reversing valve (100) is installed on one end surface of the valve block (300), and the hydraulically controlled reversing valve (200) is installed on one end surface of the valve block (300) away from the electromagnetic reversing valve (100); The P port (310), the T port (320), the A port (330) and the B port (340) are all in communication with the hydraulically controlled reversing valve (200); the P port (310) is in communication with the electromagnetic reversing valve (100), and the electromagnetic reversing valve (100) is in communication with the pilot chamber of the hydraulically controlled reversing valve (200); The gas engine rapid reversing valve assembly further comprises a proportional valve (500), wherein the proportional valve (500) is mounted on the end surface of the valve block (300) and is located next to the electromagnetic reversing valve (100); The gas engine rapid reversing valve group further comprises a pressure sensor (600), and the pressure sensor (600) is mounted on the end face of the valve block (300) and is located next to the proportional valve (500).

2. The gas engine quick reversing valve assembly according to claim 1, characterized in that: The gas engine rapid reversing valve assembly further comprises a relief valve (400), which is mounted on the end face of the valve block (300) and located next to the hydraulically controlled reversing valve (200), and is in communication with the P port (310).

3. The gas engine quick reversing valve assembly according to claim 1, characterized in that: Four mounting holes (700) and one process hole (800) are provided on the same side of the valve block (300) at the A port (330) and the B port (340), and the process hole (800) is blocked by a steel plug.

4. The gas engine quick reversing valve assembly according to claim 1, characterized in that: Three process holes (800) are respectively provided on both sides of the valve block (300), and the process holes (800) are blocked with steel plugs; wherein a damping hole is built into the process hole (800) at one end close to the hydraulically controlled reversing valve (200).

5. The gas engine quick reversing valve assembly according to claim 1, characterized in that: Three process holes (800) are provided on the same side of the valve block (300) at the P port (310) and the T port (320), and the process holes (800) are blocked by steel plugs; wherein the process hole (800) close to the T port (320) is built with a damping hole.

6. The gas engine rapid reversing valve assembly according to claim 1, characterized in that: A process hole (800) is provided on the same end surface of the valve block (300) as the hydraulically controlled reversing valve (200), and the process hole (800) is blocked with a steel plug.

7. The gas engine rapid reversing valve assembly according to claim 1, characterized in that: Three process holes (800) are provided on the same end surface of the valve block (300) as the electromagnetic reversing valve (100), and the process holes (800) are blocked with steel plugs.

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