Reliable control device for gas power generation ESD valve

Abstract

The utility model relates to the technical field of ESD valves, in particular to a reliable control device for a gas power generation ESD valve, which comprises a control valve, one end of the control valve is in threaded connection with a gas inlet pipe, the other end of the control valve is in threaded connection with a gas outlet pipe, one end of the gas inlet pipe is fixedly connected with a manual valve, and the other end of the gas inlet pipe is fixedly connected with a gas outlet pipe. A gas film is fixedly connected in the control valve, a disc is fixedly connected to the top of the gas film, the interior of the control valve is divided into a circulation chamber and an operation chamber through the gas film, a conical head used for blocking natural gas is installed at the end, close to the gas inlet pipe, of the control valve, a push rod is fixedly connected to the bottom of the conical head, and a mountain-shaped base is installed in the control valve. One end of the round rod is fixedly connected with the disc, a driving assembly used for driving the round rod is installed at the top end of the control valve, and the reliable control device for the gas power generation ESD valve has the advantages of being convenient to observe, rapid in response and capable of reducing losses.

Description

TECHNICAL FIELD

[0001] The utility model relates to ESD valve technical field especially relates to a gas power generation ESD valve reliable control device. BACKGROUND

[0002] The gas power generation system is a kind of equipment using gas turbine, gas engine or gas compressor etc., the chemical energy of fossil fuel is converted into mechanical energy, and further converted into electric energy, in the gas power generation system, ESD valve plays a vital role, can rapidly cut off gas supply when fire, gas leakage etc.

[0003] The existing gas power generation ESD valve control device mostly uses manual control, needs operating personnel to operate on site, response speed can be slower, and operation accuracy is influenced by personnel skill and experience, in addition, the existing gas power generation ESD valve control device needs to stop working when overhauling or replacing, affects work efficiency, increases economic loss.

[0004] Therefore, it is necessary to provide a new gas power generation ESD valve reliable control device to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides a gas power generation ESD valve reliable control device.

[0006] The gas power generation ESD valve reliable control device provided by the utility model includes: control valve, one end of control valve is connected with inlet pipe in screw thread, the other end of control valve is connected with outlet pipe in screw thread, one end of inlet pipe is fixedly connected with hand valve, gas film is fixedly connected in control valve, disc is fixedly connected at the top of gas film, control valve is divided into flow-through chamber and operating chamber by gas film, the one end close to inlet pipe of control valve is installed with the cone head for blocking natural gas, the bottom of cone head is fixedly connected with push rod, mountain-shaped seat is installed in control valve, the top of mountain-shaped seat is fixedly connected with round rod, one end of round rod is fixedly connected with disc, and driving assembly for driving round rod is installed at the top end of control valve.

[0007] Preferably, the driving assembly includes: driving motor, first gear, second gear and sleeve, the top of control valve is fixedly connected with driving motor, the output end of driving motor is fixedly connected with first gear, the top of control valve is slidingly connected with sleeve, the outer wall of sleeve is connected with second gear in screw thread, the top end of control valve is fixedly connected with limiting frame, the second gear rotates in limiting frame, the first gear is engaged with the second gear, the inner wall of sleeve is provided with sliding slot, the outer wall of round rod is provided with limiting block, and the limiting block slides in sliding slot.

[0008] Preferably, a second spring is sleeved on the outer wall of the push rod, a limit ring is fixedly connected to one end of the control valve near the intake pipe, one end of the second spring is fixedly connected to the limit ring, and the other end of the second spring is fixedly connected to the push rod.

[0009] Preferably, a first spring is sleeved on the outer wall of the round rod, one end of the first spring is fixedly connected to the control valve, and the other end of the first spring is fixedly connected to the disc.

[0010] Preferably, a display tube is fixedly connected to the top of the round rod, and an observation window is opened on the outer wall of the sleeve.

[0011] Preferably, a sealing ring is fixedly connected to the inner diameter of the limiting ring, and the outer diameter of the bottom of the cone is equal to the inner diameter of the limiting ring.

[0012] Preferably, pressure gauges are fixedly connected to both sides of the control valve.

[0013] Preferably, one end of the control valve is provided with a bypass, the air inlet pipe and the air outlet pipe are connected through the bypass, and a bypass valve is fixedly connected to one end of the bypass.

[0014] Compared with related technologies, the reliable control device for ESD valves in gas-fired power generation provided by this utility model has the following advantages:

[0015] Electric control:

[0016] By designing the drive assembly, the sleeve drives the round rod to lift and lower, thereby controlling the opening and closing of the valve. This not only improves the response speed of the control valve but also ensures its reliability in emergency situations, effectively avoiding potential safety risks caused by improper operation or delays.

[0017] For easy observation:

[0018] Through the design of the display tube and observation window, the operator can intuitively see whether the current control valve is in the open or closed state, and determine whether the control valve can still work normally.

[0019] Reduce losses:

[0020] The bypass design allows the control valve to open the bypass valve during maintenance, connecting the inlet and outlet pipes. Natural gas then enters the outlet pipe through the bypass, ensuring the normal operation of the gas-fired power generation unit and avoiding economic losses caused by downtime. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of the reliable control device for ESD valves in gas-fired power generation provided by this utility model;

[0022] Figure 2 for Figure 1 The diagram shows the structure of the control valve.

[0023] Figure 3 Fig. 1 is a structural schematic view of the control valve; Figure 2 Fig. 2 is a structural schematic view of the driving assembly shown in Fig. 1;

[0024] Figure 4 Fig. 3 is a structural schematic view of the operation chamber shown in Fig. 1. Figure 2

[0025] Fig. 1 is a structural schematic view of the control valve; Fig. 2 is a structural schematic view of the driving assembly shown in Fig. 1; Fig. 3 is a structural schematic view of the operation chamber shown in Fig. 1. Fig. 4 is a structural schematic view of the control valve shown in Fig. 1. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model clearer and more understandable, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and do not limit the utility model.

[0027] The specific implementation of the utility model is described in detail below in combination with specific examples.

[0028] Please refer to Figures 1 to 4 A gas power generation ESD valve reliable control device, the gas power generation ESD valve reliable control device includes: control valve 1, control valve 1 one end is screw thread connection has the intake pipe 2, control valve 1 the other end is screw thread connection has the outlet pipe 3, the intake pipe 2 one end fixedly connected has the manual valve 4, control valve 1 inside fixedly connected has the gas film 5, the gas film 5 top fixedly connected has the disc 6, control valve 1 inside is divided into the flow-through chamber 7 and the operation chamber 8 by the gas film 5, control valve 1 is installed near the intake pipe 2 one end for blocking natural gas's cone head 9, the cone head 9 bottom fixedly connected has the push rod 10, control valve 1 inside is installed mountain-shaped seat 11, mountain-shaped seat 11 top fixedly connected has the round rod 12, the round rod 12 one end is fixedly connected with the disc 6, control valve 1 top end is installed for driving the round rod 12 driving assembly, the round rod 12 outer wall is equipped with the first spring 31, the first spring 31 one end is fixedly connected with control valve 1, the first spring 31 other end is fixedly connected with the disc 6, control valve 1 both sides are fixedly connected with pressure gauge 71, control valve 1 one end is equipped with bypass 81, the intake pipe 2 and the outlet pipe 3 are communicated by bypass 81, bypass 81 one end fixedly connected has bypass valve 82;

[0029] ​Need to explain: gas film 5 can block natural gas into operating chamber 8, make operating chamber 8 and flow through chamber 7 exist air pressure difference, push rod 10 one end is provided with the roller, the roller is contacted with the mountain-shaped seat 11, reduces the friction, the upper end of mountain-shaped seat 11 is contacted with push rod 10, first spring 31 is in initial state, pressure gauge 71 supplies operating personnel real-time inspection control valve 1 both ends natural gas pressure, bypass valve 82 is used for controlling the switch of bypass 81, natural gas can pass through bypass 81;

[0030] Please refer to Figure 2 And Figure 3 , drive assembly includes: drive motor 21, first gear 22, second gear 23 and sleeve 24, control valve 1 top fixedly connected with drive motor 21, drive motor 21 output end fixedly connected with first gear 22, control valve 1 top slidingly connected with sleeve 24, sleeve 24 outer wall is threadedly connected with second gear 23, control valve 1 top end fixedly connected with limiting frame 25, second gear 23 rotates in limiting frame 25, first gear 22 is engaged with second gear 23, the inner wall of sleeve 24 is provided with sliding groove 26, the outer wall of round rod 12 is provided with limiting block 27, limiting block 27 slides in sliding groove 26, round rod 12 top fixedly connected with display tube 51, sleeve 24 outer wall is provided with observation window 52;

[0031] Need to explain: the top of display tube 51 is provided with a handle, limiting frame 25 limits the movement of second gear 23 in the vertical direction, the display tube 51 is provided with the words ON and OFF, and the operator can observe the display tube 51 through the observation window 52 to confirm the state of the control valve 1 at this time;

[0032] Please refer to Figure 3 And Figure 4 , the outer wall of push rod 10 is sleeved with second spring 41, control valve 1 is fixedly connected with limiting ring 42 close to air inlet pipe 2 one end, second spring 41 one end is fixedly connected with limiting ring 42, second spring 41 other end is fixedly connected with push rod 10, limiting ring 42 inner diameter is fixedly connected with sealing ring 61, the outer diameter of the bottom of the cone head 9 is equal to the inner diameter of the limiting ring 42;

[0033] Need to explain: when the mountain-shaped seat 11 contacts the roller, the second spring 41 is always in the contraction state due to the extrusion of the push rod 10, the sealing ring 61 improves the sealing effect, and prevents natural gas leakage, and the outer diameter of the bottom of the cone head 9 can extrude the sealing ring 61 of the inner diameter of the limiting ring 42.

[0034] The working principle of the reliable control device of the gas power generation ESD valve provided by the utility model is as follows:

[0035] Normal work:

[0036] The control valve 1 is installed between the air inlet pipe 2 and the air outlet pipe 3, and is used for connecting the air inlet pipe 2 and the air outlet pipe 3. The manual valve 4 is in an open state, natural gas reaches the air inlet pipe 2, the bypass valve 82 is in a closed state, natural gas cannot pass through the bypass 81, and the natural gas enters the control valve 1 from the end of the control valve 1 close to the air inlet pipe 2. The driving motor 21 is started, the driving motor 21 drives the first gear 22 fixedly connected to the output end of the driving motor 21 to rotate, the first gear 22 drives the second gear 23 meshed with the first gear 22 to rotate, the second gear 23 is limited by the limiting frame 25, the inner diameter of the second gear 23 is threadedly connected with the sleeve 24, the sleeve 24 rises, the sliding groove 26 formed in the sleeve 24 also rises, when the bottom of the sliding groove 26 contacts the limiting block 27, the sliding groove 26 drives the limiting block 27 to rise, the limiting block 27 drives the circular rod 12 fixedly connected with the limiting block 27 to rise, the circular rod 12 drives the disc 6 and the gable-shaped seat 11 to be pulled up, the disc 6 drives the middle part of the air film 5 to move upwards, the first spring 31 is deformed under the extrusion of the disc 6, the roller on the push rod 10 rolls on the gable-shaped seat 11, until the middle end of the gable-shaped seat 11 extrudes the roller, the gable-shaped seat 11 pushes the push rod 10 to the direction of the taper head 9, the second spring 41 is extruded by the push rod 10 and continues to shrink, the taper head 9 is pushed by the push rod 10 and no longer extrudes the sealing ring 61 on the limiting ring 42, and a channel for natural gas to pass through is formed between the taper head 9 and the sealing ring 61. After the natural gas enters the channel, the natural gas passes through the limiting ring 42 and enters the flow-through chamber 7, then reaches the end of the control valve 1 close to the air outlet pipe 3, and then enters the air outlet pipe 3 to reach the gas turbine to burn and generate electricity. After the control valve 1 is opened, the output end of the driving motor 21 reversely rotates, so that the circular rod 12 descends and the middle part of the sliding groove 26 slides to the position of the limiting block 27. When the driving components such as the motor fail to work normally, the display pipe 51 can be pulled up by pulling the handle at the top of the display pipe 51, the display pipe 51 drives the circular rod 12 fixedly connected to the bottom of the display pipe 51 to be pulled up, so that the control valve 1 is closed. When the circular rod 12 rises and descends, the limiting block 27 slides in the sliding groove 26;

[0037] Natural gas overpressure:

[0038] When the other equipment fails to make the gas pressure in the inlet pipe 2 overpressure, the pressure in the flow chamber 7 is greater than the sum of the pressure in the operation chamber 8 and the elastic force of the first spring 31, the gas film 5 is deformed by the greater pressure in the flow chamber 7, the middle part of the gas film 5 is lifted upward, the disc 6 is lifted by the gas film 5, the first spring 31 is pressed, the disc 6 drives the round rod 12 to rise, the round rod 12 drives the fixedly connected mountain-shaped seat 11 at the bottom to rise, the roller on the push rod 10 rolls on the mountain-shaped seat 11, until the roller contacts the lower end of the mountain-shaped seat 11, under the action of the elastic force of the second spring 41, the push rod 10 drives the conical head 9 to move to the direction close to the mountain-shaped seat 11, under the joint action of the pressure of the natural gas and the elastic force of the second spring 41, the conical head 9 presses the sealing ring 61, and the passage of the control valve 1 is closed, since the roller on the push rod 10 continuously exerts the horizontal pressure on the mountain-shaped seat 11, and the mountain-shaped seat 11 is designed in the shape, after the control valve 1 is closed, the mountain-shaped seat 11 will not be displaced in the vertical direction due to the pressure of the operation chamber 8 and the elastic force of the first spring 31, when the round pipe rises, the display pipe 51 at the top is displaced in the vertical direction, the original ON on the display pipe 51 is at the position of the observation window 52, and after the movement, the ON is displayed as OFF;

[0039] Natural gas underpressure:

[0040] When the other equipment fails to make the gas pressure in the inlet pipe 2 underpressure, the pressure in the flow chamber 7 is less than the sum of the pressure in the operation chamber 8 and the elastic force of the first spring 31, the gas film 5 is deformed by the greater pressure in the operation chamber 8, the middle part of the gas film 5 is pushed out downward, the disc 6 is pulled downward by the gas film 5, the first spring 31 returns to the initial position, the disc 6 drives the round rod 12 to descend, the round rod 12 drives the fixedly connected mountain-shaped seat 11 at the bottom to descend, the roller on the push rod 10 rolls on the mountain-shaped seat 11, until the roller contacts the upper end of the mountain-shaped seat 11, under the action of the elastic force of the second spring 41, the push rod 10 drives the conical head 9 to move to the direction close to the mountain-shaped seat 11, under the joint action of the pressure of the natural gas and the elastic force of the second spring 41, the conical head 9 presses the sealing ring 61, and the passage of the control valve 1 is closed;

[0041] Maintenance of the control valve 1:

[0042] The operator rotates the hand valve 4 to close the inlet pipe 2, rotates the bypass valve 82 on the bypass 81, opens the bypass 81, and makes the natural gas enter the outlet pipe 3 from the bypass 81, so that the natural gas is normally conveyed, and the maintenance is realized without stopping the gas power generation.

[0043] The above merely describes the embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion by using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are all included in the patent protection range of the utility model.

Claims

1. A reliable control device for ESD valves in gas-fired power generation, characterized in that, include: Control valve (1), one end of control valve (1) is threadedly connected to air inlet pipe (2), the other end of control valve (1) is threadedly connected to air outlet pipe (3), and one end of air inlet pipe (2) is fixedly connected to manual valve (4). Air membrane (5), air membrane (5) is fixedly connected inside the control valve (1), and disc (6) is fixedly connected to the top of the air membrane (5). The control valve (1) is divided into a flow chamber (7) and an operating chamber (8) through the air membrane (5). A cone (9) is installed at one end of the control valve (1) near the inlet pipe (2) to block natural gas. A push rod (10) is fixedly connected to the bottom of the cone (9). A mountain-shaped seat (11) is installed inside the control valve (1). A round rod (12) is fixedly connected to the top of the mountain-shaped seat (11). One end of the round rod (12) is fixedly connected to the disc (6). The drive assembly, the top of the control valve (1) is equipped with a drive assembly for driving the round rod (12).

2. The reliable control device for ESD valves in gas-fired power generation according to claim 1, characterized in that, The drive assembly includes a drive motor (21), a first gear (22), a second gear (23), and a sleeve (24). The top of the control valve (1) is fixedly connected to the drive motor (21), the output end of the drive motor (21) is fixedly connected to the first gear (22), the top of the control valve (1) is slidably connected to the sleeve (24), the outer wall of the sleeve (24) is threadedly connected to the second gear (23), the top of the control valve (1) is fixedly connected to the limit frame (25), the second gear (23) rotates in the limit frame (25), the first gear (22) meshes with the second gear (23), the inner wall of the sleeve (24) is provided with a sliding groove (26), the outer wall of the round rod (12) is provided with a limit block (27), and the limit block (27) slides in the sliding groove (26).

3. The reliable control device for ESD valves in gas-fired power generation according to claim 1, characterized in that, A second spring (41) is fitted on the outer wall of the push rod (10). A limit ring (42) is fixedly connected to one end of the control valve (1) near the air inlet pipe (2). One end of the second spring (41) is fixedly connected to the limit ring (42), and the other end of the second spring (41) is fixedly connected to the push rod (10).

4. The reliable control device for ESD valves in gas-fired power generation according to claim 1, characterized in that, A first spring (31) is sleeved on the outer wall of the round rod (12). One end of the first spring (31) is fixedly connected to the control valve (1), and the other end of the first spring (31) is fixedly connected to the disc (6).

5. The reliable control device for ESD valves in gas-fired power generation according to claim 2, characterized in that, The top of the round rod (12) is fixedly connected to a display tube (51), and an observation window (52) is opened on the outer wall of the sleeve (24).

6. The reliable control device for ESD valves in gas-fired power generation according to claim 3, characterized in that, The inner diameter of the limiting ring (42) is fixedly connected to the sealing ring (61), and the outer diameter of the bottom of the cone (9) is equal to the inner diameter of the limiting ring (42).

7. The reliable control device for ESD valves in gas-fired power generation according to claim 1, characterized in that, Pressure gauges (71) are fixedly connected to both sides of the control valve (1).

8. The reliable control device for ESD valves in gas-fired power generation according to claim 1, characterized in that, The control valve (1) is provided with a bypass (81) at one end. The air inlet pipe (2) and the air outlet pipe (3) are connected through the bypass (81). A bypass valve (82) is fixedly connected to one end of the bypass (81).

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