A reciprocating compressor valve fault diagnosis simulation device

Abstract

The application provides a reciprocating compressor air valve fault diagnosis simulation device.The application comprises an air valve cover, a valve seat, a valve piece, a spring and a lift limiter; the air valve cover is provided with a flow-through hole; the valve seat is provided with a first air hole; the valve piece comprises a first valve piece and a second valve piece, the first valve piece is rotationally arranged on one side of the valve seat, the first valve piece is provided with a plurality of first air leakage holes, the second valve piece is arranged on the side of the first valve piece away from the valve seat, the second valve piece is provided with a plurality of second air leakage holes, the first valve piece can be rotated to make the first air leakage holes, the second air leakage holes and the first air hole be communicated; the spring is a plurality of and is arranged in an annular array on the side of the second valve piece away from the first valve piece; the lift limiter is used for limiting the movement of the valve piece and is internally provided with a second air hole. The application changes the leakage amount of the gas passing through the first air leakage holes and the second air leakage holes through the rotation of the first valve piece, thereby simulating different leakage states of the air valve, the operation is simple, the application has continuity and is conducive to popularization and application.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas valve fault detection, in particular to a reciprocating compressor gas valve fault diagnosis simulation device. BACKGROUND

[0002] The gas valve is one of the main components in the reciprocating compressor, which is used to control the gas in and out of the cylinder. It works for a long time under high-frequency impact, high pressure or in an environment with corrosive medium, and is most likely to be damaged among all components of the reciprocating compressor. Once the gas valve fails, it may affect the compression capacity of the unit, reduce the working efficiency of the unit, and cause energy waste. According to data statistics, the most common fault of the reciprocating compressor is gas valve leakage. The gas valve leakage is usually caused by factors such as failure of the valve plate and valve seat sealing surface, failure of the spring and fracture of the valve plate.

[0003] At present, the simulation experiment process of the gas valve leakage fault of the reciprocating compressor is as follows: firstly, the gas valve is disassembled from the reciprocating compressor; then, the gas valve is disassembled, the valve plate is taken out, the damaged valve plate or spring is replaced, and the gas valve is assembled; finally, the gas valve is installed on the reciprocating compressor; the reciprocating compressor is started and runs, thereby simulating the scene when the reciprocating compressor appears gas valve leakage fault. This simulation experiment method of the reciprocating compressor appearing gas valve leakage fault has the following problems: the operation steps are complicated, the technical requirements are high, the time consumption is long; when the simulation parameters need to be changed, the disassembly, replacement and assembly must be re-performed, so that the simulation process does not have continuity, which brings great inconvenience to the simulation experiment and is not conducive to popularization and application. SUMMARY

[0004] The purpose of the present application is to provide a reciprocating compressor gas valve fault diagnosis simulation device, which aims to solve the problems of complex simulation experiment operation, long time consumption and lack of continuity in the prior art, thereby not conducive to popularization and application.

[0005] In order to solve the above problems, the technical scheme of the present application is as follows:

[0006] The application discloses a reciprocating compressor air valve fault diagnosis simulation device, which comprises an air valve cover, a valve seat, a valve piece, a spring and a lift limiter. One end of the air valve cover is an open end, and the other end of the air valve cover is a sealed end. A flow-through hole is arranged on the circumference of the air valve cover close to the sealed end. The valve seat is in sealed cooperation with the air valve cover. A first air hole is arranged in the valve seat in parallel with the axis of the valve seat and in a penetrating mode. The valve piece is arranged inside the air valve cover and on one side of the valve seat for covering or opening the first air hole. The valve piece comprises a first valve piece and a second valve piece arranged in parallel and in close contact with each other. The first valve piece is arranged in a rotating mode close to the valve seat. A plurality of first air leakage holes are arranged on the first valve piece. The second valve piece is away from the valve seat. A plurality of second air leakage holes are arranged on the second valve piece. The first valve piece can make the first air leakage hole, the second air leakage hole and the first air hole communicate after being rotated. The spring is arranged inside the air valve cover and on one side of the second valve piece away from the first valve piece. The spring is in a plurality of annular array modes. The lift limiter is in sealed cooperation with the air valve cover and is arranged on one side of the spring away from the second valve piece. The lift limiter is used for limiting the movement of the valve piece. A second air hole is arranged in the lift limiter in parallel with the axis of the lift limiter and in a penetrating mode.

[0007] The reciprocating compressor gas valve fault diagnosis simulation device of the present application can be used to simulate the fault diagnosis of the suction valve and the exhaust valve of the reciprocating compressor. In the suction valve, the valve seat is completely located inside the gas valve cover, one end of the lift limiter is located inside the gas valve cover and the other end is located outside the gas valve cover. At this time, the gas enters the inside of the gas valve cover from the flow-through hole of the gas valve cover, passes through the first gas hole on the valve seat, and presses the valve plate. When the gas pressure is greater than the spring force, the valve plate is pushed away, the first gas hole on the valve seat is opened, the valve plate compresses the spring, the gas bypasses the valve plate and enters the second gas hole inside the lift limiter, and then flows to the outside of the gas valve cover and enters the cylinder, thereby completing the suction process. When the gas pressure decreases, the compressed spring pushes the valve plate back to its original position, and the first gas hole on the valve seat is closed. During this process, the lift limiter limits the movement of the spring away from the valve plate, so that the spring can push the valve plate to close the first gas hole on the valve seat after being pushed away by the valve plate. In the exhaust valve, the gas valve cover is buckled on one end of the valve seat, and the lift limiter is completely located inside the gas valve cover. At this time, the gas in the cylinder enters the first gas hole on the valve seat from the outside of the gas valve cover, presses the valve plate, and when the gas pressure is greater than the spring force, the valve plate is pushed away, the first gas hole on the valve seat is opened, the valve plate compresses the spring, the gas bypasses the valve plate and enters the second gas hole inside the lift limiter, enters the space between the lift limiter and the sealing end of the gas valve cover, and flows out from the flow-through hole of the gas valve cover, thereby flowing to the outside of the gas valve cover. When the gas pressure decreases, the compressed spring pushes the valve plate back to its original position, and the first gas hole on the valve seat is closed. During this process, the lift limiter limits the movement of the spring away from the valve plate, so that the spring can push the valve plate to close the first gas hole on the valve seat after being pushed away by the valve plate.

[0008] The reciprocating compressor gas valve fault diagnosis simulation device of the present application is composed of a first valve plate with a first gas leakage hole and a second valve plate with a second gas leakage hole. By rotating the first valve plate, the communication state of the first gas leakage hole and the second gas leakage hole is changed, the sealing condition of the valve plate composed of the first valve plate and the second valve plate on the first gas hole on the valve seat is changed, thereby simulating whether the gas valve leaks and the fault state of different leakage amounts, and further diagnosing the fault of the gas valve. The operation is simple, the gas valve does not need to be frequently disassembled, time and labor are saved, the simulation result is accurate, and the device is conducive to popularization and application.

[0009] As a preferred embodiment, the first valve plate is connected with a rotating shaft at the axis, the rotating shaft is provided with a plurality of clamping columns arranged along the axis direction, and the first valve plate is provided with a plurality of clamping grooves adapted to the clamping columns along the circumference of the central hole. In the present application, the rotating shaft drives the first valve plate to rotate, and the first valve plate can rotate with the rotating shaft and can also make reciprocating linear motion along the surface of the rotating shaft along the axis direction; the first valve plate rotates with the rotating shaft around the axis, thereby adjusting the relative position of the first leakage hole on the first valve plate and the second leakage hole on the second valve plate, so that the first leakage hole and the second leakage hole are connected or not connected; when the first leakage hole and the second leakage hole are connected, the gas in the first gas hole of the valve seat will leak through the second leakage hole and the first leakage hole, so that the valve plate composed of the first valve plate and the second valve plate loses the sealing effect on the first gas hole of the valve seat, thereby simulating the fault condition when the gas valve leaks; when the first leakage hole and the second leakage hole are not connected, the gas in the first gas hole of the valve seat will be blocked by the first valve plate, so that the valve plate composed of the first valve plate and the second valve plate has a good sealing effect on the first gas hole of the valve seat, thereby simulating the condition when the gas valve is in a normal state.

[0010] As a preferred embodiment, the rotating shaft is connected with a driving assembly, and the driving assembly drives the first valve plate to rotate through the rotating shaft. In the present application, the driving assembly drives the rotating shaft and then drives the first valve plate to rotate, so that the first valve plate rotates conveniently and freely, and the convenience of use is improved.

[0011] As a preferred embodiment, the driving assembly comprises a hydraulic motor, a first bevel gear, two first double-headed bevel gears, two second double-headed bevel gears and a second bevel gear, the hydraulic motor is fixedly connected with the first bevel gear, the first bevel gear is arranged between the two first double-headed bevel gears and meshes with the opposite ends of the two first double-headed bevel gears respectively, the opposite ends of the two first double-headed bevel gears mesh with one end of the second double-headed bevel gear respectively, the other end of the second double-headed bevel gear meshes with the second bevel gear, and the second bevel gear is arranged between the two second double-headed bevel gears and is fixedly connected with the rotating shaft. In the present application, the driving assembly composed of the hydraulic motor, the first bevel gear, the two first double-headed bevel gears, the two second double-headed bevel gears and the second bevel gear is used to drive the first valve plate to rotate, the hydraulic motor drives the first bevel gear to rotate, the first bevel gear drives the two first double-headed bevel gears to rotate, each first double-headed bevel gear drives a second double-headed bevel gear to rotate, the two second double-headed bevel gears drive the second bevel gear to rotate, and the second bevel gear drives the first valve plate to rotate. This driving assembly can rotate forward and backward stably, the rotating speed is easy to control, the transmission accuracy is high, and the rotating angle of the first valve plate can be accurately adjusted.

[0012] As a preferred embodiment, the gear ring diameter of the first bevel gear is the same as that of the first double-head bevel gear, the second double-head bevel gear has the same gear ring diameter as the first double-head bevel gear, and the gear ring diameter of the second bevel gear is three times that of the second double-head bevel gear. In the present application, the second bevel gear forms a rotational speed difference with the first bevel gear, and the second bevel gear realizes a deceleration operation to drive the first valve plate to operate at a reduced speed, thereby avoiding the influence of the excessively high rotational speed of the first valve plate on the simulation data of the fault state.

[0013] As a preferred embodiment, the first bevel gear, the two first double-head bevel gears, the two second double-head bevel gears and the second bevel gear are arranged in a mounting box, the mounting box is provided with two first fixing plates for mounting the first double-head bevel gears, and the mounting box is also provided with two second fixing plates for mounting the second double-head bevel gears. The mounting box is arranged outside the gas valve cover to protect the first bevel gear, the first double-head bevel gears, the second double-head bevel gears and the second bevel gear. There are two first fixing plates, each of which is provided with a first double-head bevel gear. There are also two second fixing plates, each of which is provided with a second double-head bevel gear. The rotating shaft of the second bevel gear is connected with the rotating shaft of the first valve plate.

[0014] As a preferred embodiment, the rotating shaft extends towards the sealed end of the gas valve cover, and the mounting box is connected with the sealed end of the gas valve cover. In the exhaust valve, the second valve plate and the lift limiter are sleeved outside the rotating shaft, and in the intake valve, the second valve plate and the valve seat are sleeved outside the rotating shaft. In the present application, the mounting box is arranged at the sealed end of the gas valve cover, the rotating shaft of the second bevel gear extends through the mounting box and the sealed end of the gas valve cover to the inside of the gas valve cover and is connected with the rotating shaft of the first valve plate. The second valve plate is also sleeved outside the rotating shaft, which facilitates the reciprocating linear motion of the valve plate composed of the first valve plate and the second valve plate along the surface of the rotating shaft in the axial direction, thereby covering or opening the first gas hole on the valve seat.

[0015] As a preferred embodiment, a support shaft is arranged at the axis of the valve seat in the exhaust valve, and a support shaft is also arranged at the axis of the lift limiter in the intake valve. One end of the support shaft abuts against the rotating shaft, and the other end of the support shaft is provided with a support seat having a fixing and limiting function outside the gas valve cover. In the present application, the support shaft has an abutting effect on the rotating shaft, and the support seat is arranged to firmly mount the support shaft, thereby stabilizing the structure. The support seat, the support shaft and the rotating shaft cooperate with each other to further improve the stability of the structure of the simulation device and enhance the use performance.

[0016] As a preferred embodiment, the first gas leakage hole comprises a first large leakage hole, a first medium leakage hole and a first small leakage hole, the number of the first large leakage hole, the first medium leakage hole and the first small leakage hole is four and they are arranged in a ring array with the center of the first valve disc as the center, the center of the four first large leakage holes, the center of the four first medium leakage holes and the center of the four first small leakage holes are located on the same circle with the center of the first valve disc as the center, one first medium leakage hole is arranged on one side of each first large leakage hole, one first small leakage hole is arranged on the side of each first medium leakage hole away from the first large leakage hole, the included angle between the connection between the center of the first large leakage hole and the center of the first valve disc and the connection between the center of the first medium leakage hole adjacent to the first large leakage hole and the center of the first valve disc is 22.5 degrees, the included angle between the connection between the center of the first medium leakage hole and the center of the first valve disc and the connection between the center of the first small leakage hole adjacent to the first medium leakage hole and the center of the first valve disc is also 22.5 degrees, and the included angle between the connection between the center of the first large leakage hole and the center of the first valve disc and the connection between the center of the first small leakage hole adjacent to the first large leakage hole and the center of the first valve disc is 45 degrees; the second gas leakage hole is a second large leakage hole, the second large leakage hole is four and is coaxially arranged with the four first large leakage holes, and the first gas hole is also four and is coaxially arranged with the four second large leakage holes.

[0017] In the present application, the distribution of the first gas leakage hole on the first valve disc divides the first valve disc into four areas, and the four areas are repeated in turn; when the central angle changes from 0 to 90 degrees, the distribution of the first gas leakage hole on the first valve disc is always changing; when the central angle changes from 90 to 180 degrees, the distribution of the first gas leakage hole on the first valve disc repeats the change process of the central angle from 0 to 90 degrees; when the central angle changes from 180 to 270 degrees and the central angle changes from 270 to 360 degrees, the same is true. In the change process of the central angle from 0 to 90 degrees, when the central angle is 0, the straight line passes through the center of the first valve disc and the center of the first large leakage hole; when the central angle is 22.5 degrees, the straight line passes through the center of the first valve disc and the center of the first medium leakage hole; when the central angle is 45 degrees, the straight line passes through the center of the first valve disc and the center of the first small leakage hole; when the central angle is 90 degrees, the straight line passes through the center of the first valve disc and the center of another first large leakage hole. The rotation angle of the driving assembly to drive the first valve disc is usually an integer multiple of 22.5 degrees.

[0018] As a preferred embodiment, the cross-sectional area of the first valve plate and the cross-sectional area of the second valve plate are equal, the cross-sectional area of the first large hole is equal to the cross-sectional area of the second large hole, the cross-sectional area of the second large hole is equal to the cross-sectional area of the first gas hole, the cross-sectional area of the first medium hole is 50% of the cross-sectional area of the first large hole, and the cross-sectional area of the first small hole is 25% of the cross-sectional area of the first large hole. The first large hole, the first medium hole and the first small hole and the second large hole of this arrangement facilitate the calculation of the flow rate of the gas through the first and second gas holes, thereby calculating the amount of gas leakage.

[0019] Compared with the prior art, the beneficial effects of the present application are: the valve plate inside the gas valve cover is composed of a first valve plate with a first gas hole and a second valve plate with a second gas hole. By rotating the first valve plate, the communication state of the first gas hole and the second gas hole is changed, and the sealing condition of the valve plate composed of the first valve plate and the second valve plate to the first gas hole on the valve seat is changed, thereby simulating the fault state of whether the gas valve leaks and different leakage amounts, and further diagnosing the fault of the gas valve. It is simple to operate, does not need to be frequently disassembled, saves time and effort, has continuity, the simulation result is accurate, and is conducive to popularization and application. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Figure 1 An external perspective structure schematic diagram of an embodiment of the reciprocating compressor gas valve fault diagnosis simulation device provided by the present application;

[0022] Figure 2 An external perspective structure schematic diagram of an embodiment of the reciprocating compressor gas valve fault diagnosis simulation device provided by the present application; Figure 1 An internal cross-sectional structure schematic diagram of an embodiment of the reciprocating compressor gas valve fault diagnosis simulation device provided by the present application;

[0023] Figure 3 An internal cross-sectional structure schematic diagram of an embodiment of the reciprocating compressor gas valve fault diagnosis simulation device provided by the present application; Figure 2 An enlarged view of the structure at A in the internal cross-sectional structure schematic diagram of the reciprocating compressor gas valve fault diagnosis simulation device provided by the present application;

[0024] Figure 4 An enlarged view of the structure at A in the internal cross-sectional structure schematic diagram of the reciprocating compressor gas valve fault diagnosis simulation device provided by the present application; Figure 2 A structure schematic diagram of the valve plate in the open state of an embodiment of the reciprocating compressor gas valve fault diagnosis simulation device provided by the present application;

[0025] Figure 5 A structure schematic diagram of the valve plate in the open state of an embodiment of the reciprocating compressor gas valve fault diagnosis simulation device provided by the present application; Figure 4 An enlarged view of the structure at B in the structure schematic diagram of the valve plate in the open state of an embodiment of the reciprocating compressor gas valve fault diagnosis simulation device provided by the present application;

[0026] Figure 6 An enlarged view of the structure at B in the structure schematic diagram of the valve plate in the open state of an embodiment of the reciprocating compressor gas valve fault diagnosis simulation device provided by the present application;Figure 1 Schematic diagram of the internal cross-sectional structure of the exhaust valve;

[0027] Figure 7 for Figure 6 A magnified view of the structure at C in the middle;

[0028] Figure 8 for Figure 7 Schematic diagram of the structure of the middle valve plate in the open state;

[0029] Figure 9 for Figure 8 A magnified view of the structure at D in the middle;

[0030] Figure 10 Schematic diagram of the planar structure of the second valve plate;

[0031] Figure 11 Schematic diagram of the planar structure of the first valve plate;

[0032] Figure 12 for Figure 11 A magnified schematic diagram of the local structure;

[0033] Figure 13 Schematic diagram of the coordination structure of the first valve disc and the second valve disc under normal circumstances;

[0034] Figure 14 Schematic diagram of the coordination structure of the first valve disc and the second valve disc when the leakage is 25%;

[0035] Figure 15 Schematic diagram of the coordination structure of the first valve disc and the second valve disc when the leakage rate is 50%;

[0036] Figure 16 Schematic diagram of the coordination structure of the first valve disc and the second valve disc when the leakage rate is 100%;

[0037] 100-air valve cover; 200-installation box; 300-hydraulic motor;

[0038] 110 - flow hole; 120 - valve seat; 130 - spring; 140 - first valve disc; 150 - second valve disc; 160 - lift limiter; 170 - support shaft; 180 - rotating shaft; 190 - third air hole;

[0039] 210 - first bevel gear; 220 - first double-headed bevel gear; 230 - second double-headed bevel gear; 240 - second bevel gear; 250 - first fixing plate; 260 - second fixing plate;

[0040] 121 - first air hole; 141 - first large leakage hole; 142 - first medium leakage hole; 143 - first small leakage hole; 151 - second large leakage hole; 161 - second air hole. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0042] Embodiment one

[0043] The present application provides a reciprocating compressor valve fault diagnosis simulation device, which can simulate the fault state of the reciprocating compressor valve leakage, so as to accurately diagnose the fault of the reciprocating compressor valve. Figure 1 , attached Figure 2 , attached Figure 3 , attached Figure 4 , attached Figure 5 , attached Figure 6 , attached Figure 7 , attached Figure 8 and attached Figure 9The present invention relates to a reciprocating compressor valve fault diagnosis simulation device, comprising a valve cover 100, a valve seat 120, a valve disc, a spring 130 and a lift limiter 160; one end of the valve cover 100 is an open end, and the other end of the valve cover 100 is a sealed end, and the valve cover 100 is provided with a flow hole 110 in the circumferential direction near the sealed end; the valve seat 120 is in sealing cooperation with the valve cover 100, and the interior of the valve seat 120 is provided with a first air hole 121 which is parallel to the axis thereof and is through-set; the valve disc 130 is located inside the valve cover 100 and is arranged on one side of the valve seat 120 for covering or opening the first air hole 121; the valve disc comprises a first valve disc 140 and a second valve disc 150 which are arranged in parallel with each other, and the first valve disc 140 is close to the valve seat 120. It is arranged to rotate, and a plurality of first air leakage holes are provided on the first valve disc 140. The second valve disc 150 is away from the valve seat 120. A plurality of second air leakage holes are provided on the second valve disc 150. After the first valve disc 140 rotates, the first air leakage holes, the second air leakage holes and the first air hole 121 can be connected; the spring 130 is located inside the air valve cover 100 and is arranged on the side of the second valve disc 150 away from the first valve disc 140. There are a plurality of springs 130 and they are distributed in an annular array; the lift limiter 160 is sealed with the air valve cover 100 and is arranged on the side of the spring 130 away from the second valve disc 150. The lift limiter 160 is used to limit the movement of the valve disc. The interior of the lift limiter 160 is provided with a second air hole 161 parallel to its axis and arranged through it. This reciprocating compressor valve fault diagnosis simulation device is operated by a valve plate composed of a first valve plate 140 with a first leakage hole and a second valve plate 150 with a second leakage hole inside the valve cover 100. Through the rotation of the first valve plate 140, the connection state of the first leakage hole and / or the second leakage hole is changed, and the sealing condition of the valve plate composed of the first valve plate 140 and the second valve plate 150 on the first air hole 121 on the valve seat 120 is changed, thereby simulating whether the valve is leaking and the fault state of different leakage amounts, and then diagnosing the fault of the valve. The operation is simple, there is no need to frequently disassemble the valve, it saves time and effort, has consistency, and the simulation results are accurate, which is conducive to promotion and application.

[0044] The reciprocating compressor valve fault diagnosis simulation device of the present invention can perform fault diagnosis simulation on both the suction valve and the exhaust valve of the reciprocating compressor. Figure 2 , Attachment Figure 3 , Attachment Figure 4 and attached Figure 5In the intake valve, the valve seat 120 is completely located inside the valve cover 100, and one end of the lift limiter 160 is located inside the valve cover 100 and the other end is located outside the valve cover 100. At this time, the gas enters the valve cover 100 from the flow hole 110 of the valve cover 100, passes through the first air hole 121 on the valve seat 120, and squeezes the valve disc. When the gas pressure is greater than the spring force, the valve disc is pushed open, as shown in the attached figure. Figure 4 and attached Figure 5 , the first air hole 121 on the valve seat 120 opens, the valve disc compresses the spring 130, and the gas bypasses the valve disc and enters the second air hole 161 inside the lift limiter 160, flows to the outside of the valve cover 100, and enters the cylinder, completing the intake process; when the gas pressure decreases, the compressed spring 130 pushes the valve disc to return to its original position, and the valve disc covers the first air hole 121 on the valve seat 120, as shown in the attached figure. Figure 2 and attached Figure 3 During this process, the lift limiter 160 limits the spring 130 from moving in the direction away from the valve disc, preventing the spring 130 from being unable to push the valve disc to cover the first air hole 121 of the valve seat 120 during the reset process after being pushed open by the valve disc. Figure 6 , Attachment Figure 7 , Attachment Figure 8 and attached Figure 9 In the exhaust valve, the valve cover 100 is buckled on one end of the valve seat 120, and the lift limiter 160 is completely located inside the valve cover 100. At this time, the gas in the cylinder enters the first air hole 121 on the valve seat 120 from the outside of the valve cover 100, squeezing the valve disc. When the gas pressure is greater than the spring force, the valve disc is pushed open, as shown in the attached figure. Figure 8 and attached Figure 9 , the first air hole 121 on the valve seat 120 opens, the valve disc compresses the spring 130, and the gas bypasses the valve disc and enters the second air hole 161 inside the lift limiter 160, enters the space between the lift limiter 160 and the sealing end of the air valve cover 100, and flows out from the flow hole 110 of the air valve cover 100, thereby flowing to the outside of the air valve cover 100; when the gas pressure decreases, the compressed spring 130 pushes the valve disc to return to its original position, and the valve disc covers the first air hole 121 on the valve seat 120, as shown in the attached figure. Figure 6 and attached Figure 7 During this process, the lift limiter 160 limits the spring 130 from moving in a direction away from the valve plate, preventing the spring 130 from being unable to push the valve plate to cover the first air hole 121 of the valve seat 120 during the resetting process after being pushed open by the valve plate.

[0045] See attached Figure 2 , Attachment Figure 4 , Attachment Figure 6 and attached Figure 8As a preferred embodiment, the first valve plate 140 is connected with a rotating shaft 180 at the axis, the rotating shaft 180 is provided with a plurality of clamping posts arranged along the axis direction in the circumferential direction of the rotating shaft 180, and the first valve plate 140 is provided with a plurality of clamping grooves adapted to the clamping posts in the circumferential direction of the central hole. The rotating shaft 180 drives the first valve plate 140 to rotate, and the first valve plate 140 can rotate together with the rotating shaft 180 or reciprocate linearly along the surface of the rotating shaft 180 along the axis direction; the first valve plate 140 rotates together with the rotating shaft 180 around the axis, so as to adjust the relative position of the first gas leakage hole on the first valve plate 140 and the second gas leakage hole on the second valve plate 150, so that the first gas leakage hole and the second gas leakage hole are connected or not connected; when the first gas leakage hole and the second gas leakage hole are connected, the gas in the first gas hole 121 in the valve seat 120 will leak through the second gas leakage hole and the first gas leakage hole, so that the valve plate composed of the first valve plate 140 and the second valve plate 150 loses the sealing effect on the first gas hole 121 in the valve seat 120, thereby simulating the fault condition when the gas valve leaks; when the first gas leakage hole and the second gas leakage hole are not connected, the gas in the first gas hole 121 in the valve seat 120 will be blocked by the valve plate, so that the valve plate composed of the first valve plate 140 and the second valve plate 150 has a good sealing effect on the first gas hole 121 in the valve seat 120, thereby simulating the condition of the gas valve in the normal state.

[0046] Referring to the accompanying drawings Figure 2 , the accompanying drawings Figure 4 , the accompanying drawings Figure 6 , and the accompanying drawings Figure 8, as a preferred embodiment, the rotating shaft 180 is connected with a driving assembly, the driving assembly drives the first valve plate 140 to rotate through the rotating shaft 180. The driving assembly drives the rotating shaft 180 and then drives the first valve plate 140 to rotate, so that the first valve plate 140 rotates conveniently and freely, and the convenience of use is improved. Further, the driving assembly comprises a hydraulic motor 300, a first bevel gear 210, two first double-head bevel gears 220, two second double-head bevel gears 230 and a second bevel gear 240, the hydraulic motor 300 is fixedly connected with the first bevel gear 210, the first bevel gear 210 is arranged between the two first double-head bevel gears 220 and meshes with opposite ends of the two first double-head bevel gears 220 respectively, opposite ends of the two first double-head bevel gears 220 mesh with one end of the second double-head bevel gear 230 respectively, the other end of the second double-head bevel gear 230 meshes with the second bevel gear 240, and the second bevel gear 240 is arranged between the two second double-head bevel gears 230 and is fixedly connected with the rotating shaft 180. The driving assembly composed of the hydraulic motor 300, the first bevel gear 210, the two first double-head bevel gears 220, the two second double-head bevel gears 230 and the second bevel gear 240 is adopted to drive the first valve plate 140 to rotate, the hydraulic motor 300 drives the first bevel gear 210 to rotate, the first bevel gear 210 drives the two first double-head bevel gears 220 to rotate, each first double-head bevel gear 220 drives the second double-head bevel gear 230 to rotate, the two second double-head bevel gears 230 drive the second bevel gear 240 to rotate, and the second bevel gear 240 drives the first valve plate 140 to rotate. The driving assembly can rotate forward and backward, rotates stably, the rotating speed is easy to control, the transmission accuracy is high, and the rotating angle of the first valve plate 140 can be accurately adjusted. Preferably, the gear ring diameter of the first bevel gear 210 is the same as the gear ring diameter of the first double-head bevel gear 220, the gear ring diameter of the second double-head bevel gear 230 is the same as the gear ring diameter of the first double-head bevel gear 220, and the gear ring diameter of the second bevel gear 240 is three times of the gear ring diameter of the second double-head bevel gear 230. The second bevel gear 240 and the first bevel gear 210 form a rotating speed difference, so that the second bevel gear 240 realizes deceleration operation, thereby driving the first valve plate 140 to operate at a low speed, and avoiding that the first valve plate 140 rotates at a high speed to affect the simulation data of the fault state.

[0047] Referring to the accompanying drawings Figure 1 , the accompanying drawings Figure 2 , the accompanying drawings Figure 4 , the accompanying drawings Figure 6 , and the accompanying drawings Figure 8, as a preferred embodiment, the first bevel gear 210, two first double bevel gears 220, two second double bevel gears 230 and the second bevel gear 240 are arranged in a mounting box 200, the mounting box 200 is provided with two first fixed plates 250 for mounting the first double bevel gears 220, and the mounting box 200 is also provided with two second fixed plates 260 for mounting the second double bevel gears 230. The mounting box 200 is arranged outside the valve cover 100, and the first bevel gear 210, the first double bevel gears 220, the second double bevel gears 230 and the second bevel gear 240 are protected. The first fixed plates 250 are two, and one first double bevel gear 220 is arranged on each first fixed plate 250. The second fixed plates 260 are also two, and one second double bevel gear 230 is arranged on each second fixed plate 260. The rotating shaft of the second bevel gear 240 is connected with the rotating shaft 180 of the first valve plate 140.

[0048] Referring to the accompanying drawings Figure 1 , the accompanying drawings Figure 2 , the accompanying drawings Figure 4 , the accompanying drawings Figure 6 , the accompanying drawings Figure 8 , as a preferred embodiment, the rotating shaft 180 extends towards the sealing end of the valve cover 100, and the mounting box 200 is connected with the sealing end of the valve cover 100. In the exhaust valve, the second valve plate 150 and the lift limiter 160 are sleeved outside the rotating shaft 180, and in the intake valve, the second valve plate 150 and the valve seat 120 are sleeved outside the rotating shaft 180. The mounting box 200 is arranged at the sealing end of the valve cover 100, the rotating shaft of the second bevel gear 240 extends through the mounting box 200 and the sealing end of the valve cover 100 to the inside of the valve cover 100 and is connected with the rotating shaft 180 of the first valve plate 140. The second valve plate 150 is also sleeved outside the rotating shaft 180, which facilitates the reciprocating linear motion of the valve plate composed of the first valve plate 140 and the second valve plate 150 along the surface of the rotating shaft 180 in the axial direction, so as to cover or open the first gas hole 121 on the valve seat 120. Further, in the exhaust valve, a support shaft 170 is arranged at the axis of the valve seat 120, and in the intake valve, a support shaft 170 is arranged at the axis of the lift limiter 160. One end of the support shaft 170 abuts against the rotating shaft 180, and the other end of the support shaft 170 is provided with a support seat having a fixing and limiting function outside the valve cover 100. The support shaft 170 has an abutting effect on the rotating shaft 180, and the support seat makes the support shaft 170 firmly installed and stable in structure. The support seat, the support shaft 170 and the rotating shaft 180 cooperate with each other, further improving the stability of the structure of the simulation device and enhancing the use performance.

[0049] Referring to the accompanying drawings Figure 11 and the accompanying drawings Figure 12, as a preferred embodiment, the first leakage holes include first large leakage holes 141, first medium leakage holes 142 and first small leakage holes 143, the number of the first large leakage holes 141, the first medium leakage holes 142 and the first small leakage holes 143 is four respectively and they are arranged in a circular array with the center of the first valve plate 140 as the center, the center of the four first large leakage holes 141, the center of the four first medium leakage holes 142 and the center of the four first small leakage holes 143 are located on the same circle with the center of the first valve plate 140 as the center, one first medium leakage hole 142 is arranged on one side of each first large leakage hole 141, one first small leakage hole 143 is arranged on the side of each first medium leakage hole 142 away from the first large leakage hole 141, the central angle formed by the connection between the center of the first large leakage hole 141 and the center of the first valve plate 140 and the connection between the center of the first medium leakage hole 142 adjacent to it and the center of the first valve plate 140 is 22.5 degrees, the central angle formed by the connection between the center of the first medium leakage hole 142 and the center of the first valve plate 140 and the connection between the center of the first small leakage hole 143 adjacent to it and the center of the first valve plate 140 is also 22.5 degrees, the central angle formed by the connection between the center of the first large leakage hole 141 and the center of the first valve plate 140 and the connection between the center of the first small leakage hole 143 adjacent to it and the center of the first valve plate 140 is 45 degrees. The distribution of the first leakage holes on the first valve plate 140 divides the first valve plate 140 into four areas averagely, the four areas are repeated in turn; when the central angle changes from 0 to 90 degrees, the distribution of the first leakage holes on the first valve plate 140 is always changing; when the central angle changes from 90 to 180 degrees, the distribution of the first leakage holes on the first valve plate 140 repeats the change process of the central angle from 0 to 90 degrees; when the central angle changes from 180 to 270 degrees and the central angle changes from 270 to 360 degrees, it is the same. In the change process of the central angle from 0 to 90 degrees, when the central angle is 0, the straight line passes through the center of the first valve plate 140 and the center of the first large leakage hole 141; when the central angle is 22.5 degrees, the straight line passes through the center of the first valve plate 140 and the center of the first medium leakage hole 142; when the central angle is 45 degrees, the straight line passes through the center of the first valve plate 140 and the center of the first small leakage hole 143; when the central angle is 90 degrees, the straight line passes through the center of the first valve plate 140 and the center of another first large leakage hole 141. Therefore, the rotation angle of the first valve plate 140 driven by the driving assembly is usually an integer multiple of 22.5 degrees.

[0050] Referring to the drawings Figure 10, the second leakage hole is a second large leakage hole 151, and the second large leakage hole 151 is coaxially arranged with the four first large leakage holes 141. The structure of the second leakage hole is simple, and the design is also simple; meanwhile, the first gas hole 121 is also four coaxially arranged with the four second large leakage holes 151. The second leakage hole is coaxially arranged with the first gas hole 121 on the valve seat 120, and the second leakage hole on the second valve plate 150 is arranged to correspond to the first gas hole 121 on the valve seat 120. Referring to the accompanying drawings Figure 2 , the accompanying drawings Figure 4 , the accompanying drawings Figure 6 , the accompanying drawings Figure 8 , the accompanying drawings Figure 10 and the accompanying drawings Figure 11 , as a preferred embodiment, the cross-sectional area of the first valve plate 140 and the cross-sectional area of the second valve plate 150 are equal, the cross-sectional area of the first large leakage hole 141 and the cross-sectional area of the second large leakage hole 151 are equal, the cross-sectional area of the second large leakage hole 151 and the cross-sectional area of the first gas hole 121 are equal, the cross-sectional area of the first medium leakage hole 142 is 50% of the cross-sectional area of the first large leakage hole 141, and the cross-sectional area of the first small leakage hole 143 is 25% of the cross-sectional area of the first large leakage hole 141. The first large leakage hole 141, the first medium leakage hole 142 and the first small leakage hole 143 and the second large leakage hole 151 are arranged in this way, which is convenient for calculating the flow of gas through the first leakage hole and the second leakage hole, thereby calculating the leakage amount of gas.

[0051] Referring to the accompanying drawings Figure 13 When the first valve plate 140 rotates to the second large leakage hole 151 on the second valve plate 150 all fall in the closed area of the first valve plate 140, all the first large leakage holes 141, all the first medium leakage holes 142 and all the first small leakage holes 143 on the first valve plate 140 also fall in the closed area of the second valve plate 150, at this time, the valve plate composed of the first valve plate 140 and the second valve plate 150 is in a completely sealed state for the first gas hole 121 on the valve seat 120, at this time, it simulates the normal state of the valve plate.

[0052] Referring to the accompanying drawings Figure 14 When the first valve plate 140 rotates to the first small leakage hole 143 on it all coaxially with the second large leakage hole 151 on the second valve plate 150, all the first small leakage holes 143 on the first valve plate 140 are connected to form a third gas hole 190 with all the second large leakage holes 151 on the second valve plate 150, and all the first large leakage holes 141 and all the first medium leakage holes 142 on the first valve plate 140 fall in the closed area of the second valve plate 150, at this time, when the valve plate is closed, the valve plate composed of the first valve plate 140 and the second valve plate 150 appears 25% leakage for the first gas hole 121 on the valve seat 120, therefore, it simulates the state of the valve plate when the leakage amount is 25%.

[0053] Refer to the attached drawings Figure 15 When the first valve plate 140 rotates to the first large leakage hole 141 on it is coaxial with the second large leakage hole 151 on the second valve plate 150, all the first large leakage holes 141 on the first valve plate 140 are communicated with all the second large leakage holes 151 on the second valve plate 150 to form the third gas hole 190, and all the first medium leakage holes 142 and all the first small leakage holes 143 on the first valve plate 140 fall in the closed area of the second valve plate 150. At this time, when the valve plate is closed, the valve plate composed of the first valve plate 140 and the second valve plate 150 appears 100% leakage to the first gas hole 121 on the valve seat 120, so the state of the gas valve when the valve plate leakage is 100% is simulated.

[0054] Refer to the attached drawings Figure 16 When the first valve plate 140 rotates to the first large leakage hole 141 on it is coaxial with the second large leakage hole 151 on the second valve plate 150, all the first large leakage holes 141 on the first valve plate 140 are communicated with all the second large leakage holes 151 on the second valve plate 150 to form the third gas hole 190, and all the first medium leakage holes 142 and all the first small leakage holes 143 on the first valve plate 140 fall in the closed area of the second valve plate 150. At this time, when the valve plate is closed, the valve plate composed of the first valve plate 140 and the second valve plate 150 appears 100% leakage to the first gas hole 121 on the valve seat 120, so the state of the gas valve when the valve plate leakage is 100% is simulated.

[0055] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A reciprocating compressor valve fault diagnosis simulation device, characterized in that: include: An air valve cover, wherein one end of the air valve cover is an open end, the other end of the air valve cover is a sealed end, and the air valve cover is provided with a flow hole in the circumferential direction near the sealed end; a valve seat, the valve seat being in sealing cooperation with the air valve cover, the interior of the valve seat being provided with a first air hole which is parallel to the axis of the valve seat and is arranged through the valve seat; a valve disc, the valve disc being located inside the air valve cover and being arranged on one side of the valve seat for covering or opening the first air hole, the valve disc comprising a first valve disc and a second valve disc being arranged parallel to each other, the first valve disc being close to the valve seat and being rotatable, the first valve disc being provided with a plurality of first air leakage holes, the second valve disc being away from the valve seat, the second valve disc being provided with a plurality of second air leakage holes, the first valve disc being rotated to connect the first air leakage holes, the second air leakage holes, and the first air hole; a spring, the spring being located inside the air valve cover and disposed on a side of the second valve plate away from the first valve plate, the springs being in plurality and distributed in an annular array; A lift limiter is sealed with the air valve cover and is arranged on the side of the spring away from the second valve plate. The lift limiter is used to limit the movement of the valve plate. The interior of the lift limiter is provided with a second air hole that is parallel to its axis and is arranged through it.

2. The reciprocating compressor valve fault diagnosis simulation device according to claim 1, characterized in that: The first valve disc is connected to a rotating shaft at its axis to drive its rotation. The rotating shaft is provided with a plurality of clamping columns arranged along its axial direction on its circumference. The first valve disc is provided with a plurality of clamping grooves adapted to the clamping columns on the circumference of the center hole.

3. The reciprocating compressor valve fault diagnosis simulation device according to claim 2, characterized in that: The rotating shaft is connected to a driving assembly, and the driving assembly drives the first valve plate to rotate through the rotating shaft.

4. The reciprocating compressor valve fault diagnosis simulation device according to claim 3, characterized in that: The driving assembly includes a hydraulic motor, a first bevel gear, two first double-headed bevel gears, two second double-headed bevel gears and a second bevel gear. The hydraulic motor is fixedly connected to the first bevel gear. The first bevel gear is arranged between the two first double-headed bevel gears and is respectively meshed with the opposite ends of the two first double-headed bevel gears. The opposite ends of the two first double-headed bevel gears are respectively meshed with one end of one second double-headed bevel gear, and the other ends of the second double-headed bevel gears are each meshed with the second bevel gear. The second bevel gear is arranged between the two second double-headed bevel gears and is fixedly connected to the rotating shaft.

5. The reciprocating compressor valve fault diagnosis simulation device according to claim 4, characterized in that: The ring gear diameter of the first bevel gear is the same as that of the first double-headed bevel gear, the ring gear diameter of the second double-headed bevel gear is the same as that of the first double-headed bevel gear, and the ring gear diameter of the second bevel gear is three times the diameter of the ring gear of the second double-headed bevel gear.

6. The reciprocating compressor valve fault diagnosis simulation device according to claim 4, characterized in that: The first bevel gear, the two first double-headed bevel gears, the two second double-headed bevel gears and the second bevel gear are all arranged in an installation box. The installation box is provided with two first fixing plates for installing the first double-headed bevel gears, and the installation box is also provided with two second fixing plates for installing the second double-headed bevel gears.

7. The reciprocating compressor valve fault diagnosis simulation device according to claim 6, characterized in that: The rotating shaft extends in the direction of the sealing end of the air valve cover, and the mounting box is connected to the sealing end of the air valve cover; In the exhaust valve, the second valve plate and the lift limiter are both sleeved on the outside of the rotating shaft. In the intake valve, the second valve plate and the valve seat are both sleeved on the outside of the rotating shaft.

8. The reciprocating compressor valve fault diagnosis simulation device according to claim 7, characterized in that: A support shaft is provided at the axis of the valve seat in the exhaust valve, and a support shaft is also provided at the axis of the lift limiter in the intake valve. One end of the support shaft abuts against the rotating shaft, and the other end of the support shaft is provided with a support seat with fixing and limiting functions on the outside of the valve cover.

9. The reciprocating compressor valve fault diagnosis simulation device according to any one of claims 1 to 8, characterized in that: The first air leakage holes include a first large leakage hole, a first medium leakage hole and a first small leakage hole. The number of the first large leakage holes, the first medium leakage holes and the first small leakage holes are all four and are distributed in a circular array with the center of the first valve plate as the center. The centers of the four first large leakage holes, the centers of the four first medium leakage holes and the centers of the four first small leakage holes are all located on the same circle with the center of the first valve plate as the center. One of the first medium leakage holes is provided on one side of each first large leakage hole, and one of the first small leakage holes is provided on the side away from the first large leakage hole. The first The central angle formed by the connection between the center of the large leakage hole and the center of the first valve disc, and the connection between the center of the first medium leakage hole adjacent thereto and the center of the first valve disc, is 22.5 degrees. The central angle formed by the connection between the center of the first medium leakage hole and the center of the first valve disc, and the connection between the center of the first small leakage hole adjacent thereto and the center of the first valve disc, is also 22.5 degrees. The central angle formed by the connection between the center of the first large leakage hole and the center of the first valve disc, and the connection between the center of the first small leakage hole adjacent thereto and the center of the first valve disc, is 45 degrees. The second leakage holes are second large leakage holes, and there are four second large leakage holes, which are coaxially arranged with the four first large leakage holes, and there are four first air holes, which are coaxially arranged with the four second large leakage holes, respectively.

10. The reciprocating compressor valve fault diagnosis simulation device according to claim 9, characterized in that: The cross-sectional area of ​​the first valve plate is equal to the cross-sectional area of ​​the second valve plate, the cross-sectional area of ​​the first large leakage hole is equal to the cross-sectional area of ​​the second large leakage hole, the cross-sectional area of ​​the second large leakage hole is equal to the cross-sectional area of ​​the first air hole, the cross-sectional area of ​​the first medium leakage hole is 50% of the cross-sectional area of ​​the first large leakage hole, and the cross-sectional area of ​​the first small leakage hole is 25% of the cross-sectional area of ​​the first large leakage hole.

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