Reciprocating compressor air valve fault diagnosis simulation device

Abstract

The invention provides a reciprocating compressor air valve fault diagnosis simulation device. The air valve comprises an air valve cover, a valve seat, a valve plate, a spring and a lift limiter. A circulation hole is formed in the air valve cover; a first air hole is formed in the valve seat; the valve plates comprise the first valve plate and the second valve plate, the first valve plate is rotationally arranged on one side of the valve seat, a plurality of first air leakage holes are formed in the first valve plate, the second valve plate is arranged on the side, away from the valve seat, of the first valve plate, and a plurality of second air leakage holes are formed in the second valve plate. After the first valve plate rotates, the first air leakage hole, the second air leakage hole and the first air hole can be communicated; the multiple springs are arranged on the side, away from the first valve plate, of the second valve plate in an annular array mode. The lift limiter is used for limiting movement of the valve plate and internally provided with a second air hole. The leakage amount of gas passing through the first gas leakage hole and the second gas leakage hole is changed through rotation of the first valve plate, so that different leakage states of the gas valve are simulated, operation is easy, coherence is achieved, and application and popularization are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of gas valve fault detection, in particular to a gas valve fault diagnosis simulation device for a reciprocating compressor. Background Art

[0002] The air valve is one of the main components of a reciprocating compressor. It is used to control the flow of 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 media. It is the most susceptible to damage among all the components of a reciprocating compressor. Once a failure occurs in the air valve, it may affect the compressed air volume of the unit, reduce the working efficiency of the unit, and cause energy waste. According to statistics, the most common failure of a reciprocating compressor is air valve leakage. Air valve leakage is usually caused by factors such as failure of the sealing surface between the valve plate and the valve seat, spring failure, and valve plate breakage.

[0003] At present, the simulation experiment process of the valve leakage failure of the reciprocating compressor is as follows: first, the valve is disassembled from the reciprocating compressor; then, the valve is disassembled, the valve plate is taken out, the damaged valve plate or spring is replaced, and the valve is assembled; finally, the valve is installed on the reciprocating compressor; the reciprocating compressor is started and made to run, so as to simulate the situation when the reciprocating compressor has a valve leakage failure. This experimental method of simulating the valve leakage failure of the reciprocating compressor has cumbersome operation steps, high technical requirements, and a long time consumption; when the simulation parameters need to be changed, they must be disassembled, replaced and assembled again, which makes the simulation process inconsistent, brings great inconvenience to the simulation experiment, and is not conducive to promotion and application. Summary of the invention

[0004] The purpose of the present invention is to provide a reciprocating compressor valve fault diagnosis simulation device, aiming to solve the problem in the prior art that the simulation experiment of simulating valve leakage failure of a reciprocating compressor is complicated, time-consuming and lacks consistency, which is not conducive to promotion and application.

[0005] In order to solve the above problems, the technical solution of the present invention is achieved as follows:

[0006] A reciprocating compressor air valve fault diagnosis simulation device of the present invention comprises an air valve cover, a valve seat, a valve plate, a spring and a lift limiter, wherein one end of the air valve cover is an open end, and 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; the valve seat is sealed with the air valve cover, and the interior of the valve seat is provided with a first air hole which is parallel to the axis of the air valve cover and is through-set; the valve plate is located inside the air valve cover and is arranged on one side of the valve seat for covering or opening the first air hole, and the valve plate comprises a first valve plate and a second valve plate which are arranged in parallel with each other, the first valve plate is close to the valve seat and is arranged in a rotatable manner, and the first valve plate is arranged in a rotatable manner. A plurality of first air leakage holes are provided on a valve plate, the second valve plate is away from the valve seat, and a plurality of second air leakage holes are provided on the second valve plate. After the first valve plate is rotated, the first air leakage holes, the second air leakage holes and the first air hole can be connected; the spring is located inside the air valve cover and is arranged on the side of the second valve plate away from the first valve plate, and the springs are in plurality and distributed in a ring array; the lift limiter is sealed with the air valve cover and is arranged on the side of the spring away from the second valve plate, and the lift limiter is used to limit the movement of the valve plate, and the lift limiter is provided with a second air hole parallel to its axis and arranged through it.

[0007] The reciprocating compressor air valve fault diagnosis simulation device of the present invention can perform fault diagnosis simulation on the intake valve of the reciprocating compressor as well as on the exhaust valve of the reciprocating compressor. In the intake valve, the valve seat is completely located inside the air valve cover, one end of the lift limiter is located inside the air valve cover and the other end is located outside the air valve cover, at this time, the gas enters the inside of the air valve cover from the flow hole of the air valve cover, passes through the first air hole on the valve seat, and squeezes the valve plate, when the gas pressure is greater than the spring elastic force, the valve plate is pushed open, the first air hole on the valve seat is opened, the valve plate compresses the spring, the gas bypasses the valve plate and enters the second air hole inside the lift limiter, thereby flowing to the outside of the air valve cover, entering the cylinder, and completing the intake process; when the gas pressure decreases, the compressed spring pushes the valve plate to reset, and the valve plate covers the first air hole on the valve seat; in this process, the lift limiter limits the spring from moving in the direction away from the valve plate, to prevent the spring from being unable to push the valve plate to cover the first air hole on the valve seat during the reset process after being pushed open by the valve plate. In the exhaust valve, the valve cover is buckled on one end of the valve seat, and the lift limiter is completely located inside the valve cover. At this time, the gas in the cylinder enters the first air hole on the valve seat from the outside of the valve cover and squeezes the valve plate. When the gas pressure is greater than the spring force, the valve plate is pushed open, the first air hole on the valve seat opens, the valve plate compresses the spring, and the gas bypasses the valve plate and enters the second air hole inside the lift limiter, enters the space between the lift limiter and the sealing end of the valve cover, and flows out from the flow hole of the valve cover, thereby flowing to the outside of the valve cover; when the gas pressure decreases, the compressed spring pushes the valve plate to reset, and the valve plate covers the first air hole on the valve seat; in this process, the lift limiter limits the spring from moving in the direction away from the valve plate to prevent the spring from being unable to push the valve plate to cover the first air hole on the valve seat during the reset process after being pushed open by the valve plate.

[0008] The reciprocating compressor air valve fault diagnosis simulation device of the present invention has a valve plate inside the air valve cover composed of a first valve plate with a first leakage hole and a second valve plate with a second leakage hole. By rotating the first valve plate, the connection state of the first leakage hole and the second leakage hole is changed, and the sealing state of the valve plate composed of the first valve plate and the second valve plate to the first air hole on the valve seat is changed, thereby simulating whether the air valve is leaking and the fault state of different leakage amounts, and then diagnosing the fault of the air valve. The operation is simple, there is no need to frequently disassemble the air valve, time and labor are saved, and it has consistency. The simulation result is accurate, which is conducive to popularization and application.

[0009] As a preferred embodiment, the first valve plate is connected to a rotating shaft at its axis to drive its rotation, and the rotating shaft is provided with a plurality of clamping columns arranged along its axial direction on the circumference, and the first valve plate is provided with a plurality of clamping grooves matching the clamping columns on the circumference of the center hole. In the present invention, the rotating shaft drives the first valve plate to rotate, and the first valve plate can rotate together with the rotating shaft and can also make reciprocating linear motion along the axis direction of the rotating shaft along the surface of the rotating shaft; the first valve plate rotates around its axis with the rotating shaft, 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 disconnected; when the first leakage hole and the second leakage hole are connected, the gas in the first hole in 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 hole on the valve seat, thereby simulating the fault situation when the air valve leaks; when the first leakage hole and the second leakage hole are not connected, the gas in the first hole in 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 hole on the valve seat, thereby simulating the situation of the air valve in a normal state.

[0010] As a preferred embodiment, the rotating shaft is connected to a driving assembly, and the driving assembly drives the first valve plate to rotate through the rotating shaft. The present invention drives the rotating shaft through the driving assembly and then drives the first valve plate to rotate, making it easy to rotate and rotating freely, thereby improving its convenience of use.

[0011] As a preferred embodiment, the drive 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 ends opposite to the two first double-headed bevel gears, the ends opposite to the two first double-headed bevel gears are respectively meshed with one end of a second double-headed bevel gear, the other ends of the second double-headed bevel gears are 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. The present invention uses a drive assembly composed of a hydraulic motor, a first bevel gear, two first double-headed bevel gears, two second double-headed bevel gears and a second bevel gear to drive the first valve disc 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 jointly drive the second bevel gear to rotate, and the second bevel gear drives the first valve disc to rotate. This driving assembly can rotate both forward and reverse, rotates smoothly, and the rotation speed is easy to control. Moreover, it has high transmission accuracy and can accurately adjust the rotation angle of the first valve plate.

[0012] As a preferred embodiment, 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 ring gear diameter of the second double-headed bevel gear. In the present invention, the second bevel gear forms a speed difference with the first bevel gear, and the second bevel gear realizes a decelerated operation, thereby driving the first valve disc to decelerate and run, thereby preventing the first valve disc from rotating too fast and affecting the simulation data of the fault state.

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

[0014] As a preferred embodiment, 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, and in the intake valve, the second valve plate and the valve seat are both sleeved on the outside of the rotating shaft. In the present invention, the mounting box is arranged at the sealing end of the air valve cover, and the rotating shaft of the second bevel gear extends through the mounting box and the sealing end of the air valve cover to the inside of the air valve cover and is connected to the rotating shaft of the first valve plate; the second valve plate is also sleeved on the outside of the rotating shaft, so that the valve plate composed of the first valve plate and the second valve plate can make reciprocating linear motion along the surface of the rotating shaft along the axial direction thereof, thereby covering or opening the first air hole on the valve seat.

[0015] As a preferred embodiment, 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. In the present invention, the support shaft has an abutting effect on the rotating shaft, and the setting of the support seat enables the support shaft to be firmly installed and the structure is stable. The support seat, the support shaft and the rotating shaft cooperate with each other, further improving the stability of the simulation device structure and enhancing its performance.

[0016] As a preferred embodiment, the first air leakage hole includes 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 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 four first medium leakage holes and 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 side of each of the first large leakage holes is provided with a first medium leakage hole, and each of the first medium leakage holes is provided with a first small leakage hole on the side away from the first large leakage hole. The connection between the center of the first large leakage hole and the center of the first valve plate and the adjacent The central angle formed by the connection between the center of the first medium leakage hole and the center of the first valve plate 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 plate and the center of the first small leakage hole adjacent thereto and the center of the first valve plate 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 plate and the center of the first small leakage hole adjacent thereto and the center of the first valve plate is 45 degrees; the second air leakage hole is the second largest leakage hole, and there are four second largest leakage holes, which are coaxially arranged with the four first large leakage holes respectively, and there are four first air holes, which are coaxially arranged with the four second large leakage holes respectively.

[0017] In the present invention, the distribution of the first leakage holes on the first valve plate divides the first valve plate into 4 areas on average, and the 4 areas are repeated in sequence; when the central angle changes from 0 to 90 degrees, the distribution of the first leakage holes on the first valve plate 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 repeats the process of the central angle changing from 0 to 90 degrees; this is also the case when the central angle changes from 180 to 270 degrees and when the central angle changes from 270 to 360 degrees. When the center angle changes from 0 to 90 degrees, when the center angle is 0, the straight line passes through the center of the first valve plate and the center of the first large leak hole; when the center angle is 22.5 degrees, the straight line passes through the center of the first valve plate and the center of the first medium leak hole; when the center angle is 45 degrees, the straight line passes through the center of the first valve plate and the center of the first small leak hole; when the center angle is 90 degrees, the straight line passes through the center of the first valve plate and the center of another first large leak hole. The rotation angle of the first valve plate driven by the drive assembly is usually an integer multiple of 22.5 degrees.

[0018] As a preferred embodiment, the cross-sectional area of ​​the first valve plate is equal to that of the second valve plate, the cross-sectional area of ​​the first large leak hole is equal to that of the second large leak hole, the cross-sectional area of ​​the second large leak hole is equal to that of the first air hole, the cross-sectional area of ​​the first medium leak hole is 50% of that of the first large leak hole, and the cross-sectional area of ​​the first small leak hole is 25% of that of the first large leak hole. The first large leak hole, the first medium leak hole, the first small leak hole and the second large leak hole are arranged in this way, so as to calculate the flow rate of gas passing through the first leak hole and the second leak hole, thereby calculating the leakage amount of gas.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the valve plate inside the air valve cover of the present invention is composed of a first valve plate with a first leakage hole and a second valve plate with a second leakage hole. By rotating the first valve plate, the connection state between the first leakage hole and the second leakage hole is changed, and the sealing state of the valve plate composed of the first valve plate and the second valve plate to the first air hole on the valve seat is changed, thereby simulating whether the air valve is leaking and the fault state of different leakage amounts, and then diagnosing the fault of the air valve. The operation is simple, there is no need to frequently disassemble the air valve, it saves time and effort, has consistency, and the simulation result is accurate, which is conducive to popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the external three-dimensional structure of an embodiment of the reciprocating compressor gas valve fault diagnosis simulation device provided by the present invention;

[0022] Figure 2 for Figure 1 The schematic diagram of the internal cross-sectional structure of the exhaust valve;

[0023] Figure 3 for Figure 2 A magnified view of the structure at center A;

[0024] Figure 4 for Figure 2 Schematic diagram of the structure of the middle valve plate in the open state;

[0025] Figure 5 for Figure 4 A magnified view of the structure at B in the middle;

[0026] Figure 6 for Figure 1 The internal cross-sectional structure diagram of the suction 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] Fig. 9 for Figure 8 A magnified view of the structure at D in the middle;

[0030] Fig.10 is a schematic diagram of the planar structure of the first valve plate;

[0031] Fig.11 for Fig.10 A magnified schematic diagram of the local structure;

[0032] Fig.12 is a schematic diagram of the planar structure of the second valve plate;

[0033] Fig.13 is a schematic diagram of the matching structure of the first valve plate and the second valve plate under normal conditions;

[0034] Fig.14 It is a schematic diagram of the matching structure of the first valve plate and the second valve plate when the leakage amount is 25%;

[0035] Fig.15 Schematic diagram of the matching structure of the first valve plate and the second valve plate when the leakage amount is 50%;

[0036] Fig.16 is a schematic diagram of the matching structure of the first valve plate and the second valve plate when the leakage amount is 100%;

[0037] 110-flow hole; 120-valve seat; 130-spring; 140-first valve plate; 150-second valve plate; 160-lift limiter; 170-support shaft; 180-rotation shaft; 190-third air hole;

[0038] 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;

[0039] 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

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Embodiment 1

[0042] The present invention provides a reciprocating compressor air valve fault diagnosis simulation device, which can simulate the fault state of reciprocating compressor air valve leakage, thereby making an accurate diagnosis of the reciprocating compressor air valve fault. Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 5 , Attachment Figure 6 , Attachment Figure 7 , Attachment Figure 8 and attached Fig. 9A reciprocating compressor gas valve fault diagnosis simulation device of the present invention comprises a gas valve cover 100, a valve seat 120, a valve plate, a spring 130 and a lift limiter 160; one end of the gas valve cover 100 is an open end, and the other end of the gas valve cover 100 is a sealed end, and the gas valve cover 100 is provided with a flow hole 110 in the circumferential direction near the sealed end; the valve seat 120 is sealed with the gas valve cover 100, and the inside of the valve seat 120 is provided with a first air hole 121 which is parallel to the axis of the gas valve cover and is through-set; the valve plate 130 is located inside the gas 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 plate comprises a first valve plate 140 and a second valve plate 150 which are arranged in parallel with each other, and the first valve plate 140 is close to the valve seat 120. The first valve disc 140 is provided with a plurality of first air leakage holes, the second valve disc 150 is away from the valve seat 120, and the second valve disc 150 is provided with a plurality of second air leakage holes. 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 lift limiter 160 is provided with a second air hole 161 parallel to its axis and through-set inside. This reciprocating compressor air valve fault diagnosis simulation device is under the action of the 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 air 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 to the first air hole 121 on the valve seat 120 is changed, thereby simulating whether the air valve is leaking and the fault state of different leakage amounts, and then diagnosing the fault of the air valve. The operation is simple, there is no need to frequently disassemble the air valve, it saves time and effort, has consistency, and the simulation result is accurate, which is conducive to promotion and application.

[0043] The reciprocating compressor air valve fault diagnosis simulation device of the present invention can perform fault diagnosis simulation on both the suction valve of the reciprocating compressor and the exhaust valve of the reciprocating compressor. Figure 6 , Attachment Figure 7 , Attachment Figure 8 and attached Fig. 9In the air intake valve, the valve seat 120 is completely located inside the air valve cover 100, one end of the lift limiter 160 is located inside the air valve cover 100 and the other end is located outside the air valve cover 100. At this time, the gas enters the interior of the air valve cover 100 from the flow hole 110 of the air valve cover 100, passes through the first air hole 121 on the valve seat 120, and squeezes the valve plate. When the gas pressure is greater than the spring force, the valve plate is pushed open, as shown in the attached figure. Figure 8 and attached Fig. 9 , the first air hole 121 on the valve seat 120 is opened, the valve plate compresses the spring 130, the gas bypasses the valve plate and enters the second air hole 161 inside the lift limiter 160, flows to the outside of the valve cover 100, enters the cylinder, and completes the air intake process; when the gas pressure decreases, the compressed spring 130 pushes the valve plate to return to its original position, and the valve plate 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, so as to prevent 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 away by the valve plate. Figure 2 , Attachment Figure 3 , Attachment Figure 4 and attached Figure 5 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 plate. When the gas pressure is greater than the spring force, the valve plate 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 is opened, the valve plate compresses the spring 130, the gas bypasses the valve plate 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 plate to return to its original position, and the valve plate 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 a direction away from the valve plate, thereby 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.

[0044] See attached Figure 2 , Attachment Figure 4 , Attachment Figure 6 and attached Figure 8As a preferred embodiment, the first valve disc 140 is connected to a rotating shaft 180 at its axis to drive its rotation. A plurality of clamping posts arranged along its axis are arranged on the circumference of the rotating shaft 180. A plurality of clamping grooves matched with the clamping posts are arranged on the circumference of the center hole of the first valve disc 140. The rotating shaft 180 drives the first valve disc 140 to rotate. The first valve disc 140 can rotate along with the rotating shaft 180 and can also make reciprocating linear motion along its axis along the surface of the rotating shaft 180. The first valve disc 140 rotates around its axis along with the rotating shaft 180, thereby adjusting the relative position of the first leakage hole on the first valve disc 140 and the second leakage hole on the second valve disc 150, so that the first leakage hole and the second leakage hole are connected or disconnected. When the first leakage hole and the second leakage hole are connected, the gas in the first air hole 121 in the valve seat 120 will pass through The second air leakage hole and the first air leakage hole leak, so that the valve plate composed of the first valve plate 140 and the second valve plate 150 loses its sealing effect on the first air hole 121 on the valve seat 120, thereby simulating a malfunction of the air valve when it leaks; when the first air leakage hole and the second air leakage hole are not connected, the gas in the first air 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 air hole 121 on the valve seat 120, thereby simulating the situation of the air valve in a normal state.

[0045] See attached Figure 2 , Attachment Figure 4 , Attachment Figure 6 and attached Figure 8As a preferred embodiment, the rotating shaft 180 is connected with a driving assembly, and the driving assembly drives the first valve disc 140 to rotate through the rotating shaft 180. The driving assembly drives the rotating shaft 180 and then drives the first valve disc 140 to rotate, so that it is easy to rotate and rotates freely, thereby improving its convenience of use. Further, the driving assembly includes a hydraulic motor 300, a first bevel gear 210, two first double-headed bevel gears 220, two second double-headed bevel gears 230 and a second bevel gear 240, the hydraulic motor 300 is fixedly connected to the first bevel gear 210, the first bevel gear 210 is arranged between the two first double-headed bevel gears 220 and meshes with the opposite ends of the two first double-headed bevel gears 220, the opposite ends of the two first double-headed bevel gears 220 are respectively meshed with one end of a second double-headed bevel gear 230, and the other end of the second double-headed bevel gear 230 is meshed with the second bevel gear 240, and the second bevel gear 240 is arranged between the two second double-headed bevel gears 230 and is fixedly connected to the rotating shaft 180. The present invention uses a driving assembly consisting of a hydraulic motor 300, a first bevel gear 210, two first double-headed bevel gears 220, two second double-headed bevel gears 230 and a second bevel gear 240 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-headed bevel gears 220 to rotate, each first double-headed bevel gear 220 drives a second double-headed bevel gear 230 to rotate, the two second double-headed bevel gears 230 jointly drive the second bevel gear 240 to rotate, and the second bevel gear 240 drives the first valve plate 140 to rotate. This driving assembly can rotate both forward and reverse, rotates smoothly, and the rotation speed is easy to control. Moreover, the transmission accuracy is high, and the rotation angle of the first valve plate 140 can be accurately adjusted. Preferably, the ring gear diameter of the first bevel gear 210 is the same as that of the first double-headed bevel gear 220, the ring gear diameter of the second double-headed bevel gear 230 is the same as that of the first double-headed bevel gear 220, and the ring gear diameter of the second bevel gear 240 is three times the ring gear diameter of the second double-headed bevel gear 230. Such a speed difference is formed between the second bevel gear 240 and the first bevel gear 210, so that the second bevel gear 240 realizes deceleration operation, thereby driving the first valve disc 140 to decelerate operation, and preventing the first valve disc 140 from rotating too fast and affecting the simulation data of the fault state.

[0046] See attached Figure 1 , Attachment Figure 2 , Attachment Figure 4 , Attachment Figure 6 and attached Figure 8As a preferred embodiment, the first bevel gear 210, the two first double-headed bevel gears 220, the two second double-headed bevel gears 230 and the second bevel gear 240 are all arranged in a mounting box 200, and the mounting box 200 is provided with two first fixing plates 250 for mounting the first double-headed bevel gears 220, and the mounting box 200 is also provided with two second fixing plates 260 for mounting the second double-headed bevel gears 230. The mounting box 200 is arranged outside the air valve cover 100 to protect the first bevel gear 210, the first double-headed bevel gear 220, the second double-headed bevel gear 230 and the second bevel gear 240. There are two first fixing plates 250, and one first double-headed bevel gear 220 is mounted on each first fixing plate 250; there are also two second fixing plates 260, and one second double-headed bevel gear 230 is mounted on each second fixing plate 260; the rotating shaft of the second bevel gear 240 is connected to the rotating shaft 180 of the first valve plate 140.

[0047] See attached Figure 1 , Attachment Figure 2 , Attachment Figure 4 , Attachment Figure 6 and attached Figure 8 As a preferred embodiment, the rotating shaft 180 extends toward the sealing end of the air valve cover 100, and the mounting box 200 is connected to the sealing end of the air valve cover 100; in the exhaust valve, the second valve disc 150 and the lift limiter 160 are both sleeved on the outside of the rotating shaft 180, and in the intake valve, the second valve disc 150 and the valve seat 120 are both sleeved on the outside of the rotating shaft 180. The mounting box 200 is arranged at the sealing end of the air valve cover 100, and the rotating shaft of the second bevel gear 240 passes through the mounting box 200 and the sealing end of the air valve cover 100 to extend to the inside of the air valve cover 100, and is connected to the rotating shaft 180 of the first valve disc 140; the second valve disc 150 is also sleeved on the outside of the rotating shaft 180, so that the valve disc composed of the first valve disc 140 and the second valve disc 150 can make a reciprocating linear motion along the surface of the rotating shaft 180 along the axial direction thereof, thereby covering or opening the first air hole 121 on the valve seat 120. Furthermore, a support shaft 170 is provided at the axis of the valve seat 120 in the exhaust valve, and a support shaft 170 is also provided at the axis of the lift limiter 160 in the intake valve. 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 with fixing and limiting functions outside the valve cover 100. The support shaft 170 has an abutting effect on the rotating shaft 180, and the setting of the support seat enables the support shaft 170 to be firmly installed and the structure is stable. The support seat, the support shaft 170 and the rotating shaft 180 cooperate with each other, further improving the stability of the simulation device structure and enhancing its performance.

[0048] See attached Fig.10 and attached Fig.11As a preferred embodiment, the first air leakage hole includes a first large leakage hole 141, a first medium leakage hole 142 and a first small leakage hole 143. The number of the first large leakage hole 141, the first medium leakage hole 142 and the first small leakage hole 143 are all four and are distributed in a circular array with the center of the first valve plate 140 as the center. The centers of the four first large leakage holes 141, the four first medium leakage holes 142 and the four first small leakage holes 143 are all located on the same circle with the center of the first valve plate 140 as the center. A first medium leakage hole 142 is arranged on one side of each first large leakage hole 141, and a first small leakage hole 143 is arranged on the side away from the first large leakage hole 141. Leakage hole 143, the center 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 middle leakage hole 142 adjacent thereto and the center of the first valve plate 140 is 22.5 degrees, the center angle formed by the connection between the center of the first middle 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 thereto and the center of the first valve plate 140 is also 22.5 degrees, and the center 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 thereto 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 4 areas on average, and the 4 areas are repeated in sequence; 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 process of the central angle changing from 0 to 90 degrees; this is also the case when the central angle changes from 180 to 270 degrees and from 270 to 360 degrees. When the center angle changes from 0 to 90 degrees, when the center angle is 0, the straight line passes through the center of the first valve disc 140 and the center of the first large leakage hole 141; when the center angle is 22.5 degrees, the straight line passes through the center of the first valve disc 140 and the center of the first medium leakage hole 142; when the center angle is 45 degrees, the straight line passes through the center of the first valve disc 140 and the center of the first small leakage hole 143; when the center angle is 90 degrees, the straight line passes through the center of the first valve disc 140 and the center of another first large leakage hole 141. Therefore, the rotation angle of the first valve disc 140 driven by the driving component is usually an integer multiple of 22.5 degrees.

[0049] See attached Fig.12The second leakage hole is the second large leakage hole 151. The second large leakage hole 151 is four and is coaxially arranged with the four first large leakage holes 141. The second leakage hole has a simple structure and a simple design. At the same time, the first air hole 121 is four and is coaxially arranged with the four second large leakage holes 151. The second leakage hole is coaxially arranged with the first air hole 121 on the valve seat 120. The second leakage hole on the second valve plate 150 is arranged to correspond to the first air hole 121 on the valve seat 120. Figure 2 , Attachment Figure 4 , Attachment Figure 6 , Attachment Figure 8 , Attachment Fig.10 and attached Fig.12 As a preferred embodiment, the cross-sectional area of ​​the first valve plate 140 is equal to that of the second valve plate 150, the cross-sectional area of ​​the first large leak hole 141 is equal to that of the second large leak hole 151, the cross-sectional area of ​​the second large leak hole 151 is equal to that of the first air hole 121, the cross-sectional area of ​​the first medium leak hole 142 is 50% of that of the first large leak hole 141, and the cross-sectional area of ​​the first small leak hole 143 is 25% of that of the first large leak hole 141. The first large leak hole 141, the first medium leak hole 142, the first small leak hole 143 and the second large leak hole 151 are arranged in this way, so as to calculate the flow rate of gas passing through the first leak hole and the second leak hole, thereby calculating the leakage amount of gas.

[0050] See attached Fig.13 When the first valve disc 140 rotates until all the second largest leakage holes 151 on the second valve disc 150 fall into the closed area of ​​the first valve disc 140, all the first largest leakage holes 141, all the first medium leakage holes 142 and all the first small leakage holes 143 on the first valve disc 140 also fall into the closed area of ​​the second valve disc 150. At this time, the valve disc composed of the first valve disc 140 and the second valve disc 150 is in a completely sealed state with respect to the first air hole 121 on the valve seat 120. At this time, the valve disc is simulated in a normal air valve state.

[0051] See attached Fig.14 When the first valve disc 140 rotates until the first small leakage holes 143 thereon are coaxial with the second large leakage holes 151 on the second valve disc 150, all the first small leakage holes 143 on the first valve disc 140 are connected with all the second large leakage holes 151 on the second valve disc 150 to form the third air hole 190, and all the first large leakage holes 141 and all the first medium leakage holes 142 on the first valve disc 140 fall into the closed area of ​​the second valve disc 150. At this time, when the valve disc is closed, the valve disc composed of the first valve disc 140 and the second valve disc 150 has a 25% leakage for the first air hole 121 on the valve seat 120. Therefore, the simulation is the state of the air valve when the valve disc leakage is 25%.

[0052] See attached Fig.15 When the first valve disc 140 rotates until the first medium leakage holes 142 thereon are coaxial with the second large leakage holes 151 on the second valve disc 150, all the first medium leakage holes 142 on the first valve disc 140 are connected with all the second large leakage holes 151 on the second valve disc 150 to form the third air hole 190, and all the first large leakage holes 141 and all the first small leakage holes 143 on the first valve disc 140 fall into the closed area of ​​the second valve disc 150. At this time, when the valve disc is closed, the valve disc composed of the first valve disc 140 and the second valve disc 150 has a 50% leakage for the first air hole 121 on the valve seat 120. Therefore, the simulation is the valve state when the valve disc leakage is 50%.

[0053] See attached Fig.16 When the first valve disc 140 rotates until the first large leakage holes 141 thereon are coaxial with the second large leakage holes 151 on the second valve disc 150, all the first large leakage holes 141 on the first valve disc 140 are connected with all the second large leakage holes 151 on the second valve disc 150 to form the third air hole 190, and all the first medium leakage holes 142 and all the first small leakage holes 143 on the first valve disc 140 fall into the closed area of ​​the second valve disc 150. At this time, when the valve disc is closed, the valve disc composed of the first valve disc 140 and the second valve disc 150 has 100% leakage for the first air hole 121 on the valve seat 120. Therefore, the simulation is the state of the air valve when the valve disc leakage is 100%.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

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 is in sealing cooperation with the air valve cover, and a first air hole is provided inside the valve seat and is parallel to the axis of the valve seat and is through-set; A valve plate, the valve plate is located inside the air valve cover and is arranged on one side of the valve seat for covering or opening the first air hole, the valve plate comprises a first valve plate and a second valve plate which are arranged parallel to each other, the first valve plate is close to the valve seat and is arranged to rotate, a plurality of first air leakage holes are arranged on the first valve plate, the second valve plate is far away from the valve seat, a plurality of second air leakage holes are arranged on the second valve plate, and the first air hole can be connected with the first air leakage hole, the second air leakage hole and the first air hole after the first valve plate rotates; A spring, the spring is located inside the air valve cover and is arranged on a side of the second valve sheet away from the first valve sheet, and the springs are in plurality and distributed in an annular array; A lift limiter is sealed with the air valve cover and is arranged on a side of the spring away from the second valve plate. The lift limiter is used to limit the movement of the valve plate. A second air hole is provided inside the lift limiter which is parallel to the axis and is through-set.

2. The reciprocating compressor valve fault diagnosis simulation device according to claim 1, characterized in that: The first valve plate 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 axis on its circumference. The first valve plate is provided with a plurality of clamping grooves matched with 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 with 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 of the second double-headed bevel gears, and the other ends of the second double-headed bevel gears are 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 ring gear diameter 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, and 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, and 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 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 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 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 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 four first medium leakage holes and 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 side of each of the first large leakage holes is provided with a first medium leakage hole, and each of the first medium leakage holes is provided with a first small leakage hole on the side away from the first large leakage hole. The first The center angle formed by the connection between the center of the large leakage hole and the center of the first valve plate and the connection between the center of the first medium leakage hole adjacent thereto and the center of the first valve plate is 22.5 degrees, the center angle formed by the connection between the center of the first medium leakage hole and the center of the first valve plate and the connection between the center of the first small leakage hole adjacent thereto and the center of the first valve plate is also 22.5 degrees, and the center angle formed by the connection between the center of the first large leakage hole and the center of the first valve plate and the connection between the center of the first small leakage hole adjacent thereto and the center of the first valve plate is 45 degrees; The second air leakage hole is a second large air leakage hole. There are four second large air leakage holes, which are coaxially arranged with the four first large air leakage holes respectively. There are four first air holes, which are coaxially arranged with the four second large air 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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