Drain valve service life test equipment

Abstract

The utility model discloses a drain valve service life test device comprising a pedestal and a top plate which are oppositely fixed at an interval. The linear moving device is fixed on one side surface of the top plate opposite to the base. The testing assembly comprises a connecting base, a pressing piece and an elastic piece, the connecting base is arranged at the bottom end of the linear moving device and comprises a first plate part, the pressing piece comprises a first rod part, a first stopping part and a second stopping part, and the first stopping part and the second stopping part are arranged at the two opposite ends of the first rod part; the first plate portion is arranged on the first rod portion between the first stopping portion and the second stopping portion in a penetrating mode, the elastic piece is arranged on the first rod portion in a sleeving mode and connected between the first plate portion and the second stopping portion in an abutting mode, and the elastic piece has the trend of driving the second stopping portion to be away from the first plate portion. The positioning pin is arranged on one side surface of the base opposite to the top plate. The elastic piece can buffer part of acting force between the pressing piece and the valve element, accidental damage of the drain valve is prevented, and the accuracy of a test result is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of testing equipment, and in particular relates to a life testing device for a liquid discharge valve. Background Art

[0002] Drain valves are used to control the discharge of liquids and are mainly used in industries, construction, water supply and drainage engineering, etc., especially in the field of oil and gas recovery at gas stations. Drain valves are very important and their quality is related to the safety and stability of the entire oil and gas recovery equipment.

[0003] Therefore, the drain valves currently used in oil and gas recovery equipment need to select samples for life testing before leaving the factory. One of the testing methods is to repeatedly press the valve core of the drain valve to make the valve core move relative to the valve body, thereby simulating the actual use state of the drain valve and realizing the life test of the drain valve.

[0004] However, current drain valve life test equipment often uses devices such as air cylinders and hydraulic cylinders that can move back and forth in a straight line to press the valve core of the drain valve. Although this equipment is simple and effective, it uses a direct impact method to press the valve core, resulting in a large force generated during the pressing process, which can easily cause accidental damage to the drain valve and cannot accurately simulate the actual use status of the drain valve, affecting the accuracy of the test results.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The utility model aims to provide a drain valve life test device, which can prevent the drain valve from being accidentally damaged due to excessive force during testing through elastic parts, thereby improving the accuracy of the test result.

[0007] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a drain valve life test device for life test of the drain valve, the drain valve comprises a valve body and a valve core arranged in the valve body, the valve body is provided with a plurality of positioning holes, the drain valve life test device comprises a test frame, a linear motion device, a test assembly and a positioning pin. The test frame comprises a base and a top plate, the base and the top plate are fixed relative to each other. The linear motion device is fixed to a side surface of the top plate opposite to the base. The test assembly comprises a connecting seat, a pressing member and an elastic member, the connecting seat is arranged at the bottom end of the linear motion device, the connecting seat comprises a first plate portion, the pressing member comprises a first rod portion, a first stop portion and a second stop portion, the first stop portion and the second stop portion are arranged at two opposite ends of the first rod portion, the first plate portion is penetrated through the first rod portion located between the first stop portion and the second stop portion, the elastic member is sleeved on the first rod portion and abuts between the first plate portion and the second stop portion, and the elastic member has a tendency to drive the second stop portion away from the first plate portion. The positioning pin is arranged on a side surface of the base opposite to the top plate, and the positioning pin is used to cooperate with the positioning hole of the drain valve to be tested for positioning.

[0008] In one or more embodiments of the utility model, the first rod portion, the first stop portion and the second stop portion are all configured as cylindrical structures, and on a plane perpendicular to the axial direction of the pressing member, the diameter of the vertical projection of the first rod portion is smaller than the diameter of the vertical projection of the first stop portion and the diameter of the vertical projection of the second stop portion.

[0009] In one or more embodiments of the present invention, the connecting seat further includes a second plate portion and a third plate portion, the second plate portion is arranged parallel to and above the first plate portion, and the first plate portion and the second plate portion are fixed on the third plate portion.

[0010] In one or more embodiments of the present invention, the test assembly further includes a pressure sensor, and the pressure sensor is fixed to a side surface of the second plate portion facing the pressing member.

[0011] In one or more embodiments of the present invention, the connecting seat also includes a connecting portion, the top of the connecting portion is fixedly connected to the bottom end of the linear moving device, the top of the third plate portion is fixedly connected to the connecting portion, and a through hole is provided on the bottom wall of the connecting portion for the top of the pressure sensor to pass through.

[0012] In one or more embodiments of the present invention, the test assembly further comprises a pressing member disposed at the bottom end of the connecting seat, the pressing member extends toward the base, and the bottom end of the pressing member is located above the bottom end of the pressing member.

[0013] In one or more embodiments of the present invention, the pressing member includes a second rod portion and an elastic portion, the top end of the second rod portion is connected to the bottom end of the connecting seat, and the elastic portion is arranged at the bottom end of the second rod portion.

[0014] In one or more embodiments of the present invention, the test assembly is provided with two pressing members, and the two pressing members are respectively provided on two sides of the pressing member.

[0015] In one or more embodiments of the present invention, the test stand further comprises a plurality of support rods, and two ends of each support rod are respectively connected to the base and the top plate.

[0016] In one or more embodiments of the present invention, the drain valve life test device is provided with a plurality of linear motion devices and a plurality of test assemblies corresponding to each other.

[0017] In one or more embodiments of the present invention, the positioning pin is threadedly connected to a side surface of the base opposite to the top plate.

[0018] Compared with the prior art, the elastic member in the utility model can buffer part of the force between the pressing member and the valve core, prevent the excessive force between the two from causing accidental damage to the drain valve, and improve the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a three-dimensional structural diagram of a drain valve life test device in one embodiment of the utility model;

[0021] Figure 2 It is a partial structural diagram of a drain valve life test device in one embodiment of the utility model;

[0022] Figure 3 It is a three-dimensional structural diagram of a test assembly in one embodiment of the utility model.

[0023] Explanation of main figure marks: 1. test frame, 11. base, 111. first base, 112. second base, 12. top plate, 13. support rod, 2. linear moving device, 3. test assembly, 31. connecting seat, 311. first plate part, 312. second plate part, 313. third plate part, 314. connecting part, 32. pressing piece, 321. first rod part, 322. first stop part, 323. second stop part, 33. elastic part, 34. pressure sensor, 35. pressing piece, 351. second rod part, 352. elastic part, 4. positioning pin, 5. electric control box, 6. protective shell. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "vertical", "horizontal", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] Reference Figures 1 to 3 As shown, an embodiment of the utility model provides a drain valve life test device for life test of the drain valve, the drain valve comprises a valve body and a valve core arranged in the valve body, and the valve body is provided with a plurality of positioning holes. The drain valve life test device in this embodiment comprises a test frame 1, a linear motion device 2, a test assembly 3 and a positioning pin 4.

[0027] Specifically, the test stand 1 includes a base 11 and a top plate 12 that are arranged opposite to each other, and the positions of the base 11 and the top plate 12 are kept fixed.

[0028] The linear motion device 2 is fixed to a surface of the top plate 12 on one side opposite to the base 11 .

[0029] The test assembly 3 includes a connecting seat 31, a pressing member 32 and an elastic member 33. The connecting seat 31 is arranged on the side of the linear moving device 2 away from the top plate 12. The connecting seat 31 includes a first plate portion 311. The pressing member 32 includes a first rod portion 321, a first stop portion 322 and a second stop portion 323. The first stop portion 322 and the second stop portion 323 are arranged at two opposite ends of the first rod portion 321. The first plate portion 311 is inserted into the first rod portion 321 located between the first stop portion 322 and the second stop portion 323. The elastic member 33 is sleeved on the first rod portion 321 and abuts between the first plate portion 311 and the second stop portion 323. The elastic member 33 has a tendency to drive the second stop portion 323 away from the first plate portion 311.

[0030] The positioning pin 4 is disposed on a side surface of the base 11 opposite to the top plate 12 , and the positioning pin 4 is used to cooperate with the positioning hole of the drain valve to be tested to position the drain valve, thereby fixing the drain valve.

[0031] According to the above structural design, the linear motion device 2 in this embodiment can drive the test assembly 3 to move up and down in the vertical direction. When the test assembly 3 moves downward, the bottom end of the pressing member 32 can contact the valve core of the drain valve and drive the valve core to move downward. When the test assembly 3 moves upward, the pressing member 32 loses contact with the valve core of the drain valve, and the valve core automatically resets.

[0032] The above process can realize the relative movement of the valve core and the valve body, thereby simulating the relative movement state of the valve core and the valve body during the actual application of the drain valve and testing the life of the drain valve.

[0033] Furthermore, when the pressing member 32 presses the valve core of the drain valve, the elastic member 33 can buffer part of the force between the pressing member 32 and the valve core, preventing the excessive force between the two from causing accidental damage to the drain valve, thereby improving the accuracy of the test result.

[0034] The following is a further introduction to the test component 3 in this embodiment.

[0035] Reference Figure 3 As shown, the first rod portion 321, the first stop portion 322 and the second stop portion 323 are all constructed as cylindrical structures. On a plane perpendicular to the axial direction of the pressing member 32, the diameter of the vertical projection of the first rod portion 321 is smaller than the diameter of the vertical projection of the first stop portion 322 and the diameter of the vertical projection of the second stop portion 323.

[0036] In other embodiments, the cross-sections of the first rod portion 321 , the first stop portion 322 and the second stop portion 323 perpendicular to their axial directions may also be configured to be rectangular or other polygonal shapes.

[0037] Reference Figure 3 As shown, the test assembly 3 in this embodiment further includes a pressure sensor 34, which is disposed above the pressing member 32. When the pressing member 32 presses the valve core, the top end of the pressing member 32 moves upward relative to the first plate portion 311 and can contact the bottom end of the pressure sensor 34, and the pressure sensor 34 monitors the force generated by the pressing member 32 and the pressing valve core in real time.

[0038] Furthermore, in the present embodiment, the first rod portion 321, the first stop portion 322 and the second stop portion 323 are all configured as cylindrical structures, wherein the first stop portion 322 is arranged at the top end of the first rod portion 321, and the second stop portion 323 is arranged at the bottom end of the first rod portion 321, and contacts with the pressure sensor 34 through the first stop portion 322, and presses the valve core of the drain valve through the second stop portion 323.

[0039] The diameter of the first stopping portion 322 is smaller than the diameter of the first stopping portion 322 and the diameter of the second stopping portion 323 .

[0040] In order to facilitate fixing the position of the pressure sensor 34, the connection seat 31 in this embodiment further includes a second plate portion 312 and a third plate portion 313. The second plate portion 312 is arranged parallel to the first plate portion 311, and the first plate portion 311 and the second plate portion 312 are both fixed on the third plate portion 313. The pressure sensor 34 is fixed to the second plate portion 312 and faces a side surface of the pressing member 32.

[0041] Preferably, the elastic member 33 in this embodiment is a spring.

[0042] To ensure that the top of the pressing member 32 can contact the bottom of the pressure sensor 34 , it is necessary to ensure that the compression deformation size of the elastic member 33 in the initial state is greater than or equal to the distance between the top of the pressing member 32 and the bottom of the pressure sensor 34 .

[0043] Those skilled in the art can understand that the initial state of the elastic member 33 refers to a state when the pressing member 32 does not press the valve core, that is, a state when the first stop portion 322 abuts against the first plate portion 311 .

[0044] Reference Figure 3 As shown, the connecting seat 31 in this embodiment also includes a connecting portion 314, the top of the connecting portion 314 is fixedly connected to the bottom end of the linear moving device 2, the top of the third plate portion 313 is fixedly connected to the connecting portion 314, and a through hole is provided on the bottom wall of the connecting portion 314 for the top of the pressure sensor 34 to pass through, so as to further stabilize the position of the pressure sensor 34, prevent the pressure sensor 34 from shifting after being pressed by the pressing member 32, and improve the accuracy of the detection result of the pressure sensor 34.

[0045] Considering that there are certain manufacturing errors and assembly errors between the positioning pin 4 and the positioning hole on the drain valve, these errors will cause the valve body to move slightly randomly after the valve core is pressed, affecting the accuracy of the test results.

[0046] In order to overcome the test error caused by the above error, the test assembly 3 in this embodiment further includes a pressing member 35, which is disposed at the bottom end of the connecting seat 31 and extends toward the base 11, and the bottom end of the pressing member 35 is located above the bottom end of the pressing member 32. When the pressing member 32 presses the valve core, the pressing can press the valve body from the top end of the valve body to prevent the valve body from moving.

[0047] Furthermore, the pressing member 35 in this embodiment includes a second rod portion 351 and an elastic portion 352, wherein the top end of the second rod portion 351 is connected to the bottom end of the connecting seat 31, and the elastic portion 352 is disposed at the bottom end of the second rod portion 351. The elastic portion 352 can be made of an elastic material with a certain pressure resistance, such as rubber, silicone, etc.

[0048] Preferably, the testing assembly 3 is provided with two pressing members 35 , and the two pressing members 35 are respectively provided on two sides of the pressing member 32 .

[0049] In other embodiments, according to the actual shape and size of the drain valve, the test assembly 3 may also be provided with three, four or more pressing members 35 .

[0050] The drain valve life test device in this embodiment is provided with a plurality of linear motion devices 2 and a plurality of test assemblies 3 , and the number of the linear motion devices 2 is equal to the number of the test assemblies 3 .

[0051] Preferably, two linear motion devices 2 and two test components 3 are provided in this embodiment.

[0052] Preferably, the linear motion device 2 in this embodiment is a cylinder.

[0053] In other embodiments, the linear motion device 2 may also be a hydraulic cylinder, an electric cylinder, a linear motor or other devices or structures capable of achieving linear motion.

[0054] The test stand 1 and other structures in this embodiment are further introduced below.

[0055] Reference Figure 2 As shown, the test stand 1 in this embodiment further includes a plurality of support rods 13 , and both ends of each support rod 13 are respectively connected to the base 11 and the top plate 12 to support the top plate 12 and fix the position of the top plate 12 .

[0056] In order to facilitate installation and removal of the positioning pins 4 , each positioning pin 4 in this embodiment is threadedly connected to the top wall of the base 11 .

[0057] Specifically, the bottom end of the positioning pin 4 is constructed as a threaded column, and a corresponding threaded hole is provided on the top wall of the base 11 . The positioning pin 4 can be fixed in the threaded hole or removed from the threaded hole by screwing the positioning pin 4 .

[0058] Reference Figure 2 As shown, the base 11 in this embodiment includes a first base 111 and a second base 112. The second base 112 is arranged on the top wall of the first base 111. Each positioning pin 4 is threadedly connected to the top wall of the second base 112. The bottom end of each support rod 13 is connected to the first base 111.

[0059] Reference Figure 1 As shown, the drain valve life test equipment in this embodiment also includes an electrical control box 5 and a protective shell 6. The protective shell 6 and the base 11 are both installed on the top wall of the electrical control box 5, and the protective shell 6 wraps the linear motion device 2 and part of the test component 3.

[0060] In this embodiment, an opening is provided at the bottom of one side wall of the protective shell 6 to expose the base 11 and the positioning pin 4 , so that the operator can place the drain valve on the base 11 .

[0061] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0062] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A drain valve life test device, used for drain valve life test, the drain valve comprises a valve body and a valve core arranged in the valve body, the valve body is provided with a plurality of positioning holes, characterized in that: The drain valve life test equipment comprises: The test stand (1) comprises a base (11) and a top plate (12), wherein the base (11) and the top plate (12) are fixed relative to each other at a distance; A linear moving device (2) is fixed to a surface of a side of the top plate (12) opposite to the base (11); The test assembly (3) comprises a connecting seat (31), a pressing member (32) and an elastic member (33), wherein the connecting seat (31) is arranged on a side of the linear moving device (2) away from the top plate (12), the connecting seat (31) comprises a first plate portion (311), the pressing member (32) comprises a first rod portion (321), a first stop portion (322) and a second stop portion (323), wherein the first stop portion (322) and the second stop portion (323) are arranged At two opposite ends of the first rod portion (321), the first plate portion (311) is inserted into the first rod portion (321) between the first stop portion (322) and the second stop portion (323), the elastic member (33) is sleeved on the first rod portion (321) and abuts against between the first plate portion (311) and the second stop portion (323), and the elastic member (33) has a tendency to drive the second stop portion (323) away from the first plate portion (311); A positioning pin (4) is arranged on a side surface of the base (11) opposite to the top plate (12), and the positioning pin (4) is used to cooperate with a positioning hole of the drain valve to be tested for positioning.

2. The drain valve life test equipment according to claim 1, characterized in that: The first rod portion (321), the first stop portion (322) and the second stop portion (323) are all configured as cylindrical structures, and on a plane perpendicular to the axis of the pressing member (32), the diameter of the vertical projection of the first rod portion (321) is smaller than the diameter of the vertical projection of the first stop portion (322) and the diameter of the vertical projection of the second stop portion (323).

3. The drain valve life test equipment according to claim 1, characterized in that: The connecting seat (31) further comprises a second plate portion (312) and a third plate portion (313), wherein the second plate portion (312) is arranged parallel to and above the first plate portion (311), and the first plate portion (311) and the second plate portion (312) are fixed on the third plate portion (313); The test assembly (3) further comprises a pressure sensor (34), wherein the pressure sensor (34) is fixed to a side surface of the second plate portion (312) and faces the pressing member (32).

4. The drain valve life test equipment according to claim 3, characterized in that: The connecting seat (31) further comprises a connecting portion (314), the top end of the connecting portion (314) being fixedly connected to the bottom end of the linear motion device (2), the top end of the third plate portion (313) being fixedly connected to the connecting portion (314), and a through hole for the top end of the pressure sensor (34) to pass through being provided on the bottom wall of the connecting portion (314).

5. The drain valve life test equipment according to claim 1, characterized in that: The test assembly (3) further comprises a pressing member (35) arranged at the bottom end of the connecting seat (31), wherein the pressing member (35) extends toward the base (11), and the bottom end of the pressing member (35) is located above the bottom end of the pressing member (32).

6. The drain valve life test equipment according to claim 5, characterized in that: The pressing member (35) comprises a second rod portion (351) and an elastic portion (352), wherein the top end of the second rod portion (351) is connected to the bottom end of the connecting seat (31), and the elastic portion (352) is arranged at the bottom end of the second rod portion (351).

7. The drain valve life test equipment according to claim 5, characterized in that: The test assembly (3) is provided with two pressing members (35), and the two pressing members (35) are respectively arranged on two sides of the pressing member (32).

8. The drain valve life test equipment according to claim 1, characterized in that: The test stand (1) further comprises a plurality of support rods (13), and two ends of each of the support rods (13) are respectively connected to the base (11) and the top plate (12).

9. The drain valve life test equipment according to claim 1, characterized in that: The drain valve life test equipment is provided with a plurality of the linear motion devices (2) and a plurality of the test assemblies (3) corresponding to each other.

10. The drain valve life test equipment according to claim 1, characterized in that: The positioning pin (4) is threadedly connected to a side surface of the base (11) opposite to the top plate (12).

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