Flat gate valve performance testing device

Abstract

The present application relates to the field of gate valve technology, and provides a flat gate valve performance detection device, which includes a machine, a positioning mechanism, a pressure mechanism and a detection mechanism; the positioning mechanism for fixing the gate valve under test is arranged on the machine; the pressure mechanism for applying pressure to either side of the valve plate of the gate valve under test to simulate water pressure, and knocking on either side of the valve plate to simulate the impact of debris is arranged on the machine; the detection mechanism includes a first detection component and a second detection component; the first detection component and the second detection component are respectively used to detect the deformation and leakage of both sides of the valve plate. The flat gate valve performance detection device provided by the present application can improve the efficiency of gate valve performance detection, without the need to use fluid for detection, avoiding leakage of the gate valve under test and splashing of fluid, which is conducive to maintaining the cleanliness of the detection environment, reducing interference with the detection results, and improving the accuracy of the detection results.

Description

Technical Field

[0001] The present application relates to the technical field of gate valves, and in particular to a performance detection device for flat gate valves. Background Art

[0002] The flat gate valve is a valve that controls the opening and closing of the fluid by controlling the linear motion of the valve plate. The performance test of the flat gate valve is a process to test the service life, operability, strength, sealing and other properties of the flat gate valve after the production of the flat gate valve is completed.

[0003] In the related art, the flat gate valve to be tested is connected to a pipeline, and hydraulic pressure is applied to the valve plate of the flat gate valve uniformly on the surface of the valve plate through the fluid in the pipeline. In actual use, there are impurities in the fluid in the pipeline, and the force exerted by the impurities on the valve plate is different from the pressure of the fluid. The performance indicators obtained by testing only with hydraulic pressure are not suitable for the actual use environment. In addition, when the flat gate valve under test leaks, water is easily splashed out under the action of hydraulic pressure, disrupting the detection environment and causing inaccurate detection results. Summary of the invention

[0004] The embodiment of the present application provides a flat gate valve performance testing device, which can improve the technical problems existing in the related art that when a flat gate valve is tested using a fluid, the ability of the valve plate to resist the impact of impurities in the fluid cannot be tested, and if the tested gate valve leaks, the hydraulic pressure can easily cause water to splash out and disrupt the testing environment, resulting in inaccurate test results.

[0005] In a first aspect, an embodiment of the present application provides a flat gate valve performance detection device, including: a machine platform;

[0006] A positioning mechanism, the positioning mechanism is arranged on the machine platform; the positioning mechanism is used to fix the gate valve under test;

[0007] A pressure-applying mechanism, the pressure-applying mechanism being arranged on the machine platform; the pressure-applying mechanism being used to apply pressure to any side of the valve plate of the gate valve under test to simulate water pressure, and to knock on any side of the valve plate to simulate impact of debris;

[0008] The detection mechanism comprises a first detection component and a second detection component; the first detection component and the second detection component are both arranged on the positioning mechanism; the first detection component is used to detect the deformation and leakage of one side of the valve plate; the second detection component is used to detect the deformation and leakage of the other side of the valve plate.

[0009] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0010] The flat gate valve performance detection device provided in the embodiment of the present application can provide a gate valve detection space through a machine, fix the gate valve under test through a positioning mechanism, apply pressure to both sides of the valve plate of the gate valve under test through a pressure mechanism, and then detect the deformation and leakage of both sides of the valve plate of the gate valve under test through a detection mechanism. During the detection process, no gas or liquid is required to pass through the gate valve under test. The pressure mechanism is used to directly apply thrust or pull to the valve plate, which can quickly change the thrust or pull of the pressure mechanism, and then quickly change the force acting on the valve plate, and can detect the force on the local area of ​​the valve plate without moving the valve plate. The efficiency of gate valve performance detection is significantly improved, and it is more suitable for the actual use environment of the gate valve. The obtained detection results are more reliable. No fluid is used for detection, and leakage of the gate valve under test is avoided, which is conducive to maintaining a clean and tidy detection environment, reducing interference with the detection results, and improving the accuracy of the detection results.

[0011] In some embodiments, the machine platform includes a platform and a column, the platform has a detection surface; the column is arranged on the detection surface along the height direction of the platform; the positioning mechanism includes:

[0012] A centering component, the centering component is arranged on the platform, and the axis of the centering component is perpendicular to the detection surface; the centering component is used to abut against a side of the gate valve under test close to the platform, and make the axis of the gate valve under test and the axis of the centering component collinear;

[0013] A clamping assembly, wherein the clamping assembly is movably arranged on the column along the height direction of the column; the axis of the clamping assembly is colinear with the axis of the centering assembly; the clamping assembly is used to move toward the platform to abut against the side of the gate valve under test away from the platform, and push the gate valve under test toward the platform so that the side of the gate valve under test facing the platform abuts against the platform;

[0014] Wherein, the first detection component is arranged on the centering component, and the second detection component is arranged on the clamping component.

[0015] In some embodiments, the centering assembly includes:

[0016] An annular core portion, the annular core portion is arranged on the platform;

[0017] A plurality of guide rails, wherein the plurality of guide rails are arranged on the platform body around the circumference of the annular core portion; the length direction of the guide rails intersects with the axis of the annular core portion;

[0018] A plurality of centering pieces, wherein the centering pieces are movably arranged on the guide rails, and the plurality of centering pieces correspond to the plurality of guide rails one by one; and the distances from the plurality of centering pieces to the axis of the annular core portion are the same;

[0019] Among them, the multiple centering pieces are used to respectively abut against the inner side wall of the gate valve under test facing the platform side, so that the axis of the gate valve under test is collinear with the axis of the annular core; the first detection component is located between any two adjacent centering pieces.

[0020] In some embodiments, the clamping assembly comprises:

[0021] A moving member, one end of which is movably disposed on the column along the height direction of the column;

[0022] A pressing member, one end of which is connected to the other end of the moving member; the second detection assembly is arranged on a side of the pressing member facing the platform;

[0023] The pressing member is used to move toward the platform along with the moving member to push the gate valve under test toward the platform so that a side of the gate valve under test facing the platform abuts against the platform.

[0024] In some embodiments, the pressure applying mechanism comprises:

[0025] A lower pressure component, the lower pressure component is arranged on the platform; the lower pressure component is used to apply pressure to a side of the valve plate close to the platform;

[0026] An upper pressure component, the upper pressure component is arranged on the clamping component; the upper pressure component is used to apply pressure to a side of the valve plate away from the platform;

[0027] A lower knocking member, the lower knocking member is arranged at one end of the lower pressure component close to the clamping component; the lower knocking member is used to knock the side of the valve plate close to the platform;

[0028] An upper knocking piece is arranged at one end of the upper pressure assembly close to the platform; the upper knocking piece is used to knock the side of the valve plate away from the platform.

[0029] In some embodiments, the table body is provided with a first groove along the axial direction of the centering component; the table body is provided with a plurality of second grooves evenly around the circumference of the first groove, and the depth direction of the second groove is parallel to the axial direction of the centering component; the clamping component is provided with a third groove along its own axial direction; the clamping component is provided with a plurality of fourth grooves evenly around the circumference of the third groove, and the depth direction of the fourth groove is parallel to the axial direction of the clamping component; the axis of the first groove is collinear with the axis of the third groove; the lower pressure component comprises:

[0030] a first lower pressure member, wherein the first lower pressure member is disposed in the first groove along an axial direction of the first groove;

[0031] A plurality of second lower pressure members, wherein the plurality of second lower pressure members are disposed in the plurality of second grooves along the axis of the second groove in a one-to-one correspondence;

[0032] Wherein, the lower knocking member is arranged at one end of the first lower pressure member close to the clamping assembly; the lower knocking member is located on the side of the first lower pressure member;

[0033] The upper pressure component comprises:

[0034] a first upper pressure member, the first upper pressure member being arranged in the third groove along the axis of the third groove;

[0035] A plurality of second upper pressure members, wherein the plurality of second upper pressure members are disposed in the plurality of fourth grooves along the axis of the fourth groove in a one-to-one correspondence;

[0036] Wherein, the upper knocking member is arranged at one end of the first upper pressure member close to the platform; the upper knocking member is located on the side of the first upper pressure member.

[0037] In some embodiments, the first lower pressure member comprises:

[0038] A first lower telescopic member, wherein the first lower telescopic member is disposed in the first groove along the axis direction of the first groove; the first lower telescopic member can be telescoped along the axis direction of the first groove;

[0039] A first lower abutting portion, the first lower abutting portion is arranged at one end of the first lower telescopic member facing the clamping assembly; the first lower abutting portion is used to abut against a side of the valve plate facing the platform body;

[0040] The second lower pressure member comprises:

[0041] A second lower telescopic member, the second lower telescopic member is arranged in the second groove along the axial direction of the second groove; the second lower telescopic member can be telescoped along the axial direction of the second groove;

[0042] A second lower abutment portion, the second lower abutment portion being arranged at one end of the second lower telescopic member facing the clamping assembly; the second lower abutment portion being used to abut against a side of the valve plate facing the platform body;

[0043] The first upper pressure member comprises:

[0044] A first upper telescopic member, wherein the first upper telescopic member is disposed in the third groove along the axis direction of the third groove; the first upper telescopic member can be telescoped along the axis direction of the third groove;

[0045] A first upper abutment portion, the first upper abutment portion being arranged at one end of the first upper telescopic member facing the platform; the first upper abutment portion being used to abut against a side of the valve plate facing the clamping assembly;

[0046] The second upper pressure member comprises:

[0047] A second upper telescopic member, wherein the second upper telescopic member is disposed in the fourth groove along the axis direction of the fourth groove; the second upper telescopic member can be telescoped along the axis direction of the fourth groove;

[0048] A second upper abutment portion, the second upper abutment portion being arranged at one end of the second upper telescopic member facing the platform; the second upper abutment portion being used to abut against a side of the valve plate facing the clamping assembly;

[0049] Wherein, the lower knocking member is arranged on the side surface of the first lower abutting portion; and the upper knocking member is arranged on the side surface of the first upper abutting portion.

[0050] In some embodiments, the lower pressure assembly further includes at least one lower striking member, and the lower striking member includes:

[0051] a first rotating portion, the first rotating portion being rotatably disposed on a side surface of the first lower abutting portion about its own axis; the axis of the first rotating portion being perpendicular to the axis of the first groove;

[0052] a first knocking part, one end of which is connected to the first rotating part; the length direction of the first knocking part is perpendicular to the axis of the first rotating part; the other end of the first knocking part is used to knock the side of the valve plate facing the platform;

[0053] The upper pressure assembly further comprises at least one upper striking member, and the upper striking member comprises:

[0054] a second rotating portion, the second rotating portion being rotatably disposed on a side surface of the first upper abutting portion about its own axis; the axis of the second rotating portion being perpendicular to the axis of the third groove;

[0055] A second knocking part, one end of which is connected to the second rotating part; the length direction of the second knocking part is perpendicular to the axis of the second rotating part; the other end of the second knocking part is used to knock the side of the valve plate toward the clamping assembly.

[0056] In some embodiments, the flat gate valve performance detection device further includes a control device, which is disposed on the platform; the control device is electrically connected to the first lower telescopic member, the second lower telescopic member, the first upper telescopic member, the second upper telescopic member, the first rotating part and the second rotating part respectively; the pressure mechanism further includes:

[0057] a first pressure sensor, the first pressure sensor being disposed on the first lower abutting portion; the first pressure sensor being electrically connected to the control device; the first pressure sensor being used to detect the pressure of the first lower abutting portion acting on the valve plate;

[0058] a second pressure sensor, the second pressure sensor being disposed on the first upper abutting portion; the second pressure sensor being electrically connected to the control device; the second pressure sensor being used to detect the pressure of the first upper abutting portion acting on the valve plate;

[0059] a third pressure sensor, the third pressure sensor being disposed on the first knocking part; the third pressure sensor being electrically connected to the control device; the third pressure sensor being used to detect the pressure of the first knocking part acting on the valve plate;

[0060] The control device is used to control the first lower telescopic member and the second lower telescopic member according to the detection result of the first pressure sensor, control the first upper telescopic member and the second upper telescopic member according to the detection result of the second pressure sensor, and control the first rotating part and the second rotating part according to the detection result of the third pressure sensor.

[0061] In some embodiments, the pressure mechanism also includes a gate valve diameter detector, which is arranged on the platform; the gate valve diameter detector is electrically connected to the control device; the gate valve diameter detector is used to detect the diameter length of the inner wall of the gate valve under test and send a diameter length signal to the control device, and the control device is also used to control the start and stop of the first lower pressure member, the second lower pressure member, the first upper pressure member and the second upper pressure member according to the diameter length signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0063] Figure 1 A schematic diagram of the structure of a flat gate valve performance detection device provided in an embodiment of the present application;

[0064] Figure 2 A partial structural schematic diagram of a flat gate valve performance detection device provided in an embodiment of the present application;

[0065] Figure 3 A front view of a partial structure of a flat gate valve performance detection device provided in an embodiment of the present application;

[0066] Figure 4 This is a schematic structural diagram of the first lower pressure member and the lower knocking member provided in an embodiment of the present application.

[0067] Among them, the reference numerals in the figure are:

[0068] 100, flat gate valve performance testing device; 10, machine platform; 11, platform body; 111, testing surface; 112, first groove; 113, second groove; 12, column; 20, positioning mechanism; 21, centering assembly; 211, annular core; 212, guide rail; 213, centering piece; 22, clamping assembly; 221, moving piece; 222, clamping piece; 2221, third groove; 2222, fourth groove; 30, pressing mechanism; 31, lower pressing assembly; 311, first lower pressing piece; 3111, first lower telescopic piece; 3112, first lower abutting portion; 312, second Lower pressure member; 3121, second lower telescopic member; 3122, second lower abutting portion; 32, upper pressure assembly; 321, first upper pressure member; 3211, first upper telescopic member; 3212, first upper abutting portion; 322, second upper pressure member; 3221, second upper telescopic member; 3222, second upper abutting portion; 33, lower knocking member; 331, first rotating portion; 332, first knocking portion; 34, upper knocking member; 341, second rotating portion; 342, second knocking portion; 40, detection mechanism; 41, first detection assembly; 42, second detection assembly; 50, control device. DETAILED DESCRIPTION

[0069] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0070] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0071] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0072] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application 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 application.

[0073] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0074] In this application, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0075] It should be noted that, in the present application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described in the present application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example", etc. is intended to present related concepts in a concrete way, meaning that specific features, structures or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the above words in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0076] The flat gate valve is a valve that controls the opening and closing of the fluid by controlling the linear motion of the valve plate. The performance test of the flat gate valve is a process to test the service life, operability, strength, sealing and other properties of the flat gate valve after the production of the flat gate valve is completed.

[0077] In the related art, the flat gate valve to be tested is connected to a pipeline, and hydraulic pressure is applied to the valve plate of the flat gate valve through the fluid in the pipeline. The hydraulic pressure can only act evenly on the surface of the valve plate. In actual use, there are impurities in the fluid in the pipeline. The force exerted by the impurities on the valve plate is different from the pressure of the fluid. The performance indicators obtained by testing only with hydraulic pressure are not suitable for the actual use environment. In addition, when the flat gate valve under test leaks, water is easily splashed out under the action of water pressure, disrupting the detection environment.

[0078] Based on this, in order to improve the technical problem in the related technology that when using fluid to test the flat gate valve, the ability of the valve plate to resist the impact of impurities in the fluid cannot be detected, and the tested gate valve leaks, the hydraulic pressure easily causes water to splash out and disrupt the detection environment, resulting in inaccurate detection results, the embodiment of the present application provides the following solution.

[0079] Please also read Figure 1 and Figure 4 The embodiment of the present application provides a flat gate valve performance testing device 100, which includes a machine 10, a positioning mechanism 20, a pressure-applying mechanism 30 and a testing mechanism 40; the positioning mechanism 20 is arranged on the machine 10; the positioning mechanism 20 is used to fix the gate valve under test; the pressure-applying mechanism 30 is arranged on the machine 10; the pressure-applying mechanism 30 is used to apply pressure to either side of the valve plate of the gate valve under test to simulate water pressure, and knock on either side of the valve plate to simulate the impact of debris; the testing mechanism 40 includes a first testing component 41 and a second testing component 42; the first testing component 41 and the second testing component 42 are both arranged on the positioning mechanism 20; the first testing component 41 is used to detect the deformation and leakage of one side of the valve plate; the second testing component 42 is used to detect the deformation and leakage of the other side of the valve plate.

[0080] It can be understood that the machine 10 is a structure for carrying other components and providing a testing platform. It can be a table with a horizontal plane or a flat plate, but it is not limited to this. The positioning mechanism 20 is a component used to fix the gate valve under test on the machine 10. It can clamp the outer side of the gate valve under test or the inner side of the gate valve under test, but it is not limited to this. The pressure mechanism 30 is a component used to apply pressure to either side of the valve plate of the gate valve under test to test the sealing performance of the valve plate and the valve body and the strength of the valve plate. For example, the pressure mechanism 30 can be a push rod, through which a thrust is applied to one side of the valve plate, or the pressure mechanism 30 can be a traction machine, through which a pulling force is applied to one side of the valve plate, but it is not limited to this. The detection mechanism 40 is a component used to detect the deformation and leakage of the valve plate. For example, the first detection component 41 can use an ultrasonic sensor or an infrared sensor, but it is not limited to this. The second detection component 42 can use the same mechanism as the first detection component 41.

[0081] As can be seen from the above, the flat gate valve performance detection device 100 provided in the embodiment of the present application provides a gate valve detection space through the machine 10, fixes the gate valve under test through the positioning mechanism 20, applies pressure to both sides of the valve plate of the gate valve under test through the pressure mechanism 30, and then detects the deformation and leakage of both sides of the valve plate of the gate valve under test through the detection mechanism 40. During the detection process, no gas or liquid is required to pass through the gate valve under test. The pressure mechanism 30 is used to directly apply thrust or pull to the valve plate, which can quickly change the thrust or pull of the pressure mechanism 30, and then quickly change the force acting on the valve plate, and can detect the force on the local area of ​​the valve plate without moving the valve plate. The efficiency of gate valve performance detection is significantly improved, which is more in line with the actual use environment of the gate valve. The obtained detection results are more reliable. No fluid is used for detection, which avoids leakage of the gate valve under test and splashing of fluid, which is conducive to maintaining a clean and tidy detection environment, reducing interference with the detection results, and improving the accuracy of the detection results.

[0082] In some embodiments, please refer to Figures 1 to 3 The machine 10 includes a platform 11 and a column 12. The platform 11 has a detection surface 111. The column 12 is arranged on the detection surface 111 along the height direction of the platform 11. The positioning mechanism 20 includes:

[0083] A centering component 21 is disposed on the platform 11, and the axis of the centering component 21 is perpendicular to the detection surface 111; the centering component 21 is used to abut against a side of the gate valve under test close to the platform 11, and make the axis of the gate valve under test and the axis of the centering component 21 collinear;

[0084] A clamping assembly 22, the clamping assembly 22 is movably arranged on the column 12 along the height direction of the column 12; the axis of the clamping assembly 22 is colinear with the axis of the centering assembly 21; the clamping assembly 22 is used to move toward the platform 11 to abut against the side of the gate valve under test away from the platform 11, and push the gate valve under test toward the platform 11 so that the side of the gate valve under test facing the platform 11 abuts against the platform 11;

[0085] The first detection component 41 is disposed on the centering component 21 , and the second detection component 42 is disposed on the pressing component 22 .

[0086] It can be understood that the platform 11 is a structure for providing a detection surface 111 and carrying other components. The detection surface 111 is a plane for detecting the gate valve under test, and can place the components on the surface of the platform 11 stably. The column 12 is a structure for providing support along the height direction of the platform 11, so that other components can be arranged above the detection surface 111 along the height direction of the platform 11. The column 12 can be a cylinder or a square column, but is not limited to this. The centering component 21 is a component for fixing the gate valve under test and making the axis of the gate valve under test colinear with the axis of the centering component 21. The centering component 21 is a circular component or a plurality of components placed circumferentially around a certain center. The axis of the centering component 21 is the axis of the circular component or the axis perpendicular to the detection surface 111 and passing through the center of the circle around which multiple components are placed. The axis of the gate valve under test is the axis of the fluid channel through which the fluid passes. The clamping assembly 22 is a component used to push the gate valve under test toward the platform 11. A guide rail can be set on the column 12, and the clamping assembly 22 can be set on a slider that can move on the guide rail, so that the clamping assembly 22 can move along the height direction of the column 12; or an opening is opened at one end of the clamping assembly 22, and the column 12 can be inserted into the opening, and rollers are provided on the two opposite inner walls of the opening, and the axes of the two rollers are perpendicular to the height direction of the column 12. The two rollers are respectively abutted against the two side walls of the column 12, and the rollers are rotated to enable the clamping assembly 22 to move along the height direction of the column 12, but the present invention is not limited to this.

[0087] In this way, a centering component 21 for fixing the gate valve under test is provided on the detection surface 111 of the platform 11, and the axis of the gate valve under test is made to be colinear with the axis of the centering component 21 through the centering component 21, and then a clamping component 22 capable of moving along the height direction of the column 12 is provided on the column 12, and the gate valve under test is pushed toward the platform 11 through the clamping component 22, and then the gate valve under test is fixed, and gate valves of different sizes can be fixed at the same position and in the same direction, without the need for manual positioning by operators, and the detection conditions can be unified, variables can be reduced, the accuracy and reliability of the performance test results of flat gate valves can be improved, a standardized test process can be established, and the efficiency and consistency of detection can be improved.

[0088] Optionally, in some embodiments, see Figures 1 to 3 The centering assembly 21 includes an annular core portion 211, a plurality of guide rails 212 and a plurality of centering pieces 213, wherein the annular core portion 211 is arranged on the platform 11; the plurality of guide rails 212 are arranged on the platform 11 around the circumference of the annular core portion 211; the length direction of the guide rails 212 intersects with the axis of the annular core portion 211; the centering piece 213 is movably arranged on the guide rails 212, and the plurality of centering pieces 213 correspond one by one to the plurality of guide rails 212; the distances from the plurality of centering pieces 213 to the axis of the annular core portion 211 are the same; wherein the plurality of centering pieces 213 are used to respectively abut against the inner side wall of the gate valve under test facing the platform 11, so that the axis of the gate valve under test is collinear with the axis of the annular core portion 211; the first detection assembly 41 is located between any two adjacent centering pieces 213.

[0089] It can be understood that the annular core portion 211 is a component used to determine the axial position of the centering component 21. The middle part of the annular core portion 211 has a space for installing a pressure-applying component so that the pressure-applying component can abut against the center of the valve plate. For example, the annular core portion 211 can be a hollow cylindrical structure, and the end face of one end of the cylindrical structure is arranged on the detection surface 111. The axis of the cylindrical structure is the axis of the centering component 21, and a plurality of guide rails 212 are arranged on the platform 11 around the circumference of the cylindrical structure; or the annular core portion 211 can be a plurality of protrusions evenly spaced on a circle with a certain point on the detection surface 111 as the center and a preset length as the radius, and the axis of the linear position centering component 21 passing through the center of the annular core portion 211 and perpendicular to the detection surface 111 is, but not limited to this. The guide rail 212 is a component used to guide the moving part to move along a straight line direction intersecting the axis of the annular core portion 211, so that the moving part is close to or away from the axis of the annular core portion 211. The guide rail 212 can be a sliding guide rail 212 or a rolling guide rail 212, but is not limited thereto. The centering piece 213 is a component that can move on the guide rail 212 to abut against the inner wall of the gate valve under test, thereby making the axis of the gate valve under test colinear with the axis of the annular core portion 211. The centering piece 213 may include a slide, a driving device and an abutting piece, wherein the slide may be movably disposed on the guide rail 212 by means of rollers, the driving device is disposed on the slide, the driving device may be a motor, the power output end of the driving device is connected to the slide, the abutting piece is disposed on the side of the slide away from the axis of the annular core portion 211, the abutting piece may be a hard block, The driving device drives the slide to move on the guide rail 212 so that the abutment member abuts against the inner side of the gate valve under test; or the centering member 213 may include a slide, an elastic member and an abutment member, by opening a groove on the guide rail 212, setting the elastic member in the groove along the length direction of the guide rail 212, part of the slide is set in the groove and abuts against one end of the elastic member, the abutment member may be an airbag, and the slide is pushed in a direction away from the axis of the annular core 211 by the elastic member so that the airbag abuts against the inner side of the gate valve under test, but not limited to this. By moving multiple centering members 213 along the guide rail 212, and the distances from each centering member 213 to the axis of the annular core 211 are the same, the distances from each point on the inner wall of the gate valve under test to the axis of the annular core 211 are the same, so that the axis of the gate valve under test is collinear with the axis of the annular core 211. The first detection component 41 is disposed between any two adjacent centering pieces 213 , so that the first detection component 41 is always located in the gate valve to be tested, so as to test the valve plate.

[0090] In this way, the axis position of the centering component 21 is determined by setting the annular core portion 211, and multiple guide rails 212 are set on the platform 11 around the circumference of the annular core portion 211, and the length direction intersecting with the axis of the annular core portion 211, and multiple centering pieces 213 are movably set on the guide rails 212, and the multiple centering pieces 213 correspond to the multiple guide rails 212 one by one, and the distances from the multiple centering pieces 213 to the axis of the annular core portion 211 are the same. The multiple centering pieces 213 are moved along the guide rails 212 to abut against the inner wall of the gate valve under test, so that the axis of the gate valve under test is collinear with the axis of the annular core portion 211, which reduces the difficulty of manually assembling the gate valve under test on the flat gate valve performance detection device 100, improves the work efficiency of the detection, and can unify the detection conditions, reduce variables, and improve the accuracy and reliability of the flat gate valve performance detection results.

[0091] Optionally, see Figures 1 to 3 The clamping assembly 22 includes a moving member 221 and a clamping member 222, one end of the moving member 221 is movably arranged on the column 12 along the height direction of the column 12; one end of the clamping member 222 is connected to the other end of the moving member 221; the second detection assembly 42 is arranged on the side of the clamping member 222 facing the platform 11; wherein the clamping member 222 is used to move toward the platform 11 with the moving member 221 to push the gate valve under test toward the platform 11, so that the side of the gate valve under test facing the platform 11 abuts against the platform 11.

[0092] It can be understood that the moving part 221 is a component used to move on the column 12. For example, a groove can be opened on the column 12 along its own height direction, and a spring is arranged in the groove. The moving part 221 is a slider that can move in the groove along the height direction of the column 12. One end of the slider is connected to the spring, and the spring can push the slider toward the platform 11. The slider is moved away from the platform 11 by compressing the spring; or a guide rail and a lead screw can be arranged on the column 12 along its own height direction. The moving part 221 is a slider with a nut that can cooperate with the lead screw on one side. By driving the lead screw to rotate, the moving part 221 moves along the height direction of the column 12, but it is not limited to this. The clamping member 222 is used to follow the moving member 221 to move toward the platform 11, and then push the gate valve under test toward the platform 11, so that one end of the gate valve under test abuts against the platform 11. For example, the clamping member 222 can be a circular plate, and the axis of the circular plate is collinear with the axis of the annular core 211; or, the clamping member 222 can be a sphere connected to a plurality of telescopic rods, one end of the plurality of telescopic rods is connected to the outer surface of the sphere, and the telescopic rods can be telescoped in a direction perpendicular to the axis of the annular core 211, and the axis of the sphere perpendicular to the detection surface 111 is collinear with the axis of the annular core 211, and the other ends of the plurality of telescopic rods are at the same distance from the axis of the annular core 211, and the other ends of the plurality of telescopic rods are used to simultaneously abut against the end face of the gate valve under test away from the platform 11, so as to press the gate valve under test toward the platform 11, but the present invention is not limited thereto.

[0093] In this way, by arranging a moving part 221 on the column 12 that can move along the height direction of the column 12, and arranging a clamping part 222 on the moving part 221, the moving part 221 can drive the clamping part 222 to abut against the end surface of the gate valve under test away from the platform 11. This can ensure that the valve remains stable during the detection process, reduce errors caused by valve movement or shaking, thereby improving the accuracy of the detection results, reducing accidents during the test process, and improving the safety of the test.

[0094] In some embodiments, see Figure 1 and Figure 4 The pressure mechanism 30 includes a lower pressure component 31, an upper pressure component 32, a lower knocking piece 33 and an upper knocking piece 34. The lower pressure component 31 is arranged on the platform 11; the lower pressure component 31 is used to apply pressure to the side of the valve plate close to the platform 11; the upper pressure component 32 is arranged on the clamping component 22; the upper pressure component 32 is used to apply pressure to the side of the valve plate away from the platform 11; the lower knocking piece 33 is arranged at one end of the lower pressure component 31 close to the clamping component 22; the lower knocking piece 33 is used to knock the side of the valve plate close to the platform 11; the upper knocking piece 34 is arranged at one end of the upper pressure component 32 close to the platform 11; the upper knocking piece 34 is used to knock the side of the valve plate away from the platform 11.

[0095] It can be understood that the lower pressure component 31 is a component used to continuously apply pressure to the side of the valve plate of the gate valve under test facing the platform 11 to simulate the hydraulic pressure acting on the valve plate. For example, the lower pressure component 31 can be a cylinder, an oil cylinder, or a retractable push rod. One end of the lower pressure component 31 is set on the platform 11, and the other end can move in a direction perpendicular to the straight line of the detection surface 111 to abut the side of the valve plate facing the platform 11 and continuously apply pressure. The upper pressure component 32 is a component used to continuously apply pressure to the side of the valve plate of the gate valve under test away from the platform 11 to simulate the hydraulic pressure acting on the valve plate. The upper pressure component 32 can adopt the same structure as the lower pressure component 31. One end of the upper pressure component 32 is set on the clamping component 22, and the other end can move in a direction perpendicular to the straight line of the detection surface 111 to abut the side of the valve plate away from the platform 11 and continuously apply pressure. The lower knocking member 33 is a component used to apply a short-acting impact force to the side of the valve plate of the tested gate valve toward the platform 11 to simulate the impact of impurities in the fluid on the valve plate. For example, the lower knocking member 33 may include a motor and a pendulum, and the motor and the pendulum are arranged on the lower pressure component 31, and the power output end of the motor is connected to the hammer handle of the pendulum. The pendulum is driven to rotate by the motor so that the hammer head of the pendulum hits the valve plate; or a groove can be opened on the lower pressure component 31, and the opening direction of the groove faces the valve plate. A spring and a retractable limit member are arranged at the bottom of the groove. The lower knocking member 33 is a block with a rope chain connected to one end, and one end of the rope chain is connected to the bottom of the groove. The lower knocking member 33 is moved to the bottom of the groove by compressing the spring, and the limit member abuts against one end of the lower knocking member 33 close to the valve plate, and the limit member is contracted so that the lower knocking member 33 can be ejected to the outside of the groove under the action of the spring to hit the valve plate, but is not limited to this. The upper striking member 34 is a member used to apply a short-duration impact force to the side of the valve plate of the gate valve being tested away from the platform 11 to simulate impurities in the fluid hitting the valve plate. The upper striking member 34 can adopt the same structure as the lower striking member 33.

[0096] In this way, the lower pressure member arranged on the platform 11 continuously applies pressure to the side of the valve plate of the tested gate valve facing the platform 11, the upper pressure member arranged on the clamping assembly 22 continuously applies pressure to the side of the valve plate of the tested gate valve away from the platform 11, the lower knocking member 33 arranged on the lower pressure assembly 31 close to the clamping assembly 22 applies a short-acting impact force to the side of the valve plate of the tested gate valve facing the platform 11 to simulate the impact of impurities in the fluid on the valve plate, and the upper knocking member 34 arranged on the upper pressure assembly 32 close to the platform 11 applies a short-acting impact force to the side of the valve plate of the tested gate valve away from the platform 11 to simulate the impact of impurities in the fluid on the valve plate. This can make the performance detection of the flat gate valve more in line with actual use conditions, improve the accuracy and reliability of the performance test results, and be able to more accurately and quickly control the continuous pressure and impact pressure on the gate valve, which is conducive to obtaining accurate data on the performance of the flat gate valve to evaluate the performance of the gate valve in actual use.

[0097] In some embodiments, see Figure 1 , Figure 2 and Figure 4 The table body 11 is provided with a first groove 112 along the axial direction of the centering component 21; the table body 11 is provided with a plurality of second grooves 113 evenly around the circumference of the first groove 112, and the depth direction of the second groove 113 is parallel to the axial direction of the centering component 21; the clamping component 22 is provided with a third groove 2221 along its own axial direction; the clamping component 22 is provided with a plurality of fourth grooves 2222 evenly around the circumference of the third groove 2221, and the depth direction of the fourth groove 2222 is parallel to the axial direction of the clamping component 22; the axis of the first groove 112 is collinear with the axis of the third groove 2221;

[0098] The lower pressure assembly 31 includes a first lower pressure piece 311 and a plurality of second lower pressure pieces 312. The first lower pressure piece 311 is disposed in the first groove 112 along the axis direction of the first groove 112; the plurality of second lower pressure pieces 312 are disposed in the plurality of second grooves 113 along the axis of the second groove 113 in a one-to-one correspondence; wherein the lower knocking piece 33 is disposed at one end of the first lower pressure piece 311 close to the clamping assembly 22; the lower knocking piece 33 is located on the side of the first lower pressure piece 311;

[0099] The upper pressure assembly 32 includes a first upper pressure piece 321 and a plurality of second upper pressure pieces 322. The first upper pressure piece 321 is arranged in the third groove 2221 along the axis of the third groove 2221; the plurality of second upper pressure pieces 322 are arranged in the plurality of fourth grooves 2222 along the axis of the fourth groove 2222 in a one-to-one correspondence; wherein the upper knocking piece 34 is arranged at one end of the first upper pressure piece 321 close to the platform 11; the upper knocking piece 34 is located on the side of the first upper pressure piece 321.

[0100] It can be understood that the first groove 112 is a structure for accommodating the first lower pressure member 311, the second groove 113 is a structure for accommodating the second lower pressure member 312, the third groove 2221 is a structure for accommodating the first upper pressure member 321, and the fourth groove 2222 is a structure for accommodating the second upper pressure member 322, so that the end surface of the first lower pressure member 311 facing the valve plate and the end surface of the second lower pressure member 312 facing the valve plate can be flush with the detection surface 111, and the end surface of the first upper pressure member 321 facing the valve plate and the end surface of the second upper pressure member 322 facing the valve plate can be flush with the end surface of the clamping assembly 22 facing the valve plate. The first lower pressure member 311 is arranged in the first groove 112 along the axial direction of the first groove 112 so as to be able to extend to abut against the side where the axis of the gate valve under test and the valve plate intersect. The first lower pressure member 311 can be a cylinder, an oil cylinder, or a retractable push rod, but is not limited thereto. The second lower pressure member 312 is arranged in the second groove 113, and the second groove 113 is evenly opened around the circumference of the first groove 112, so that the second lower pressure member 312 can be evenly arranged around the first lower pressure member 311. The third groove 2221 is opened in the clamping assembly 22 along the axial direction of the clamping assembly 22, and the first upper pressure member 321 is arranged in the third groove 2221 so as to be able to extend to the other side of the intersection of the axis of the gate valve under test and the valve plate. The second upper pressure member 32 is arranged in the fourth groove 2222, and the fourth groove 2222 is evenly opened around the circumference of the third groove 2221, so that the second upper pressure member can be evenly arranged around the first upper pressure member 321. The second lower pressure member 312, the first upper pressure member 321 and the second upper pressure member 322 can adopt the same structure as the first lower pressure member 311.

[0101] In this way, a first groove 112 is opened along the axial direction of the centering component 21; a plurality of second grooves 113 are evenly opened on the platform 11 around the circumference of the first groove 112, and the depth direction of the second groove 113 is parallel to the axial direction of the centering component 21; a third groove 2221 is opened on the clamping component 22 along its own axial direction; a plurality of fourth grooves 2222 are evenly opened on the clamping component 22 around the circumference of the third groove 2221, and the depth direction of the fourth groove 2222 is parallel to the axial direction of the clamping component 22, and the first lower pressure piece 311 is correspondingly arranged in the first groove 112, the second lower pressure piece 312 is arranged in the second groove 113, and the first upper pressure piece 321 is arranged In the third groove 2221, the second upper pressure member 322 is arranged in the fourth groove 2222, so that uniform pressure can be applied to various parts of the valve plate of the gate valve under test to simulate the situation where the valve plate is subjected to fluid pressure when it is fully closed in actual use. Pressure can also be applied to a certain part of the valve plate of the gate valve under test to simulate the situation where the valve plate is subjected to fluid pressure when the valve plate is partially opened in actual use. This is beneficial to improving the accuracy of the performance test results, and the stress conditions of the flat gate valve under different working conditions can be simulated without adjusting the flat gate valve, thereby improving the efficiency of the test work. No fluid is required during the test to avoid fluid leakage and splashing, which is beneficial to maintaining a clean and tidy test environment and reducing interference with the test results.

[0102] Optionally, see Figure 1 , Figure 2 and Figure 4 The first lower pressure member 311 includes a first lower telescopic member 3111 and a first lower abutting portion 3112. The first lower telescopic member 3111 is arranged in the first groove 112 along the axial direction of the first groove 112; the first lower telescopic member 3111 can be telescoped along the axial direction of the first groove 112; the first lower abutting portion 3112 is arranged at one end of the first lower telescopic member 3111 facing the clamping assembly 22; the first lower abutting portion 3112 is used to abut against the side of the valve plate facing the platform 11;

[0103] The second lower pressure member 312 includes a second lower telescopic member 3121 and a second lower abutting portion 3122. The second lower telescopic member 3121 is arranged in the second groove 113 along the axial direction of the second groove 113; the second lower telescopic member 3121 can be telescoped along the axial direction of the second groove 113; the second lower abutting portion 3122 is arranged at one end of the second lower telescopic member 3121 facing the clamping assembly 22; the second lower abutting portion 3122 is used to abut against the side of the valve plate facing the platform 11;

[0104] The first upper pressure member 321 includes a first upper telescopic member 3211 and a first upper abutting portion 3212. The first upper telescopic member 3211 is arranged in the third groove 2221 along the axial direction of the third groove 2221; the first upper telescopic member 3211 can be telescoped along the axial direction of the third groove 2221; the first upper abutting portion 3212 is arranged at one end of the first upper telescopic member 3211 facing the platform 11; the first upper abutting portion 3212 is used to abut against the side of the valve plate facing the clamping assembly 22;

[0105] The second upper pressure piece 322 includes a second upper telescopic piece 3221 and a second upper abutment portion 3222, wherein the second upper telescopic piece 3221 is arranged in the fourth groove 2222 along the axial direction of the fourth groove 2222; the second upper telescopic piece 3221 can be telescoped along the axial direction of the fourth groove 2222; the second upper abutment portion 3222 is arranged at one end of the second upper telescopic piece 3221 facing the platform body 11; the second upper abutment portion 3222 is used to abut the side of the valve plate facing the clamping assembly 22; wherein, the lower knocking piece 33 is arranged on the side of the first lower abutment portion 3112; and the upper knocking piece 34 is arranged on the side of the first upper abutment portion 3212.

[0106] It can be understood that the first lower telescopic member 3111 is a member used to extend and retract along the axial direction of the first groove 112 so that the first lower abutting portion 3112 can abut against the valve plate on the side facing the platform 11. The first telescopic member can adopt a cylinder, and input or discharge gas into or out of the cylinder through an air pump so that one end of the cylinder can move; or an electric telescopic rod can be adopted, and the motor rotation can be controlled so that one end of the electric telescopic rod can move, but it is not limited to this. The first lower abutting portion 3112 is a member used to abut against the valve plate. The first lower abutting portion 3112 can be a block or a plate, but it is not limited to this. The first lower abutting portion 3112 can be made of a material with a hardness not lower than that of the valve plate, for example, it can be chromium stainless steel, or it can be tungsten steel, but it is not limited to this. The second lower telescopic member 3121, the first upper telescopic member 3211 and the second upper telescopic member 3221 can adopt the same structure as the first lower telescopic member 3111. The second lower abutting portion 3122 , the first upper abutting portion 3212 , and the second lower abutting portion 3122 may adopt the same structure and material as the first lower abutting portion 3112 .

[0107] With such arrangement, the first lower telescopic member 3111 drives the first lower abutting portion 3112 to move to abut against the valve plate, the second lower telescopic member 3121 drives the second lower abutting portion 3122 to move to abut against the valve plate, the first upper telescopic member 3211 drives the first upper abutting portion 3212 to move to abut against the valve plate, and the second upper telescopic member 3221 drives the second upper abutting portion 3222 to move to abut against the valve plate. The thrust applied to the valve plate and the location of applying pressure can be flexibly changed, which significantly improves the efficiency of gate valve performance testing. No fluid is used for testing, which avoids leakage of the gate valve under test and splashing of fluid, is conducive to maintaining a clean and tidy testing environment, reducing interference with the test results, and improving the accuracy of the test results.

[0108] In some embodiments, see Figure 1 and Figure 4 The lower pressure assembly 31 further includes at least one lower knocking member 33, which includes a first rotating portion 331 and a first knocking portion 332. The first rotating portion 331 is rotatably arranged on the side of the first lower abutting portion 3112 around its own axis; the axis of the first rotating portion 331 is perpendicular to the axis of the first groove 112; one end of the first knocking portion 332 is connected to the first rotating portion 331; the length direction of the first knocking portion 332 is perpendicular to the axis of the first rotating portion 331; the other end of the first knocking portion 332 is used to knock the side of the valve plate facing the platform 11;

[0109] The upper pressure assembly 32 also includes at least one upper knocking member 34, which includes a second rotating portion 341 and a second knocking portion 342. The second rotating portion 341 can be rotatably arranged on the side of the first upper abutment portion 3212 around its own axis; the axis of the second rotating portion 341 is perpendicular to the axis of the third groove 2221; one end of the second knocking portion 342 is connected to the second rotating portion 341; the length direction of the second knocking portion 342 is perpendicular to the axis of the second rotating portion 341; the other end of the second knocking portion 342 is used to knock the valve plate toward the side of the clamping assembly 22.

[0110] It can be understood that the first rotating part 331 is a component used to drive the first knocking part 332 to rotate, and the first rotating part 331 can be the piston rod of the rotating cylinder, or can be the power output end of the stepping motor, but is not limited to this. The first knocking part 332 is a component used to knock the valve plate, for example, it can be a rod body, or it can be a block with a rope chain at one end, and one end of the rope chain is connected to the power output end of the first rotating part 331, but is not limited to this. The second rotating part 341 can adopt the same structure as the first rotating part 331, and the second knocking part 342 can adopt the same structure as the first knocking part 332.

[0111] In this way, by setting the first rotating part 331 on the side of the first lower abutment part 3112, one end of the first knocking part 332 is connected to the first rotating part 331, so that the first rotating part 331 can rotate to drive the other end of the first knocking part 332 to knock the valve plate toward the side of the platform 11, and by setting the second rotating part 341 on the side of the first upper abutment part 3212, one end of the second knocking part 342 is connected to the second rotating part 341, so that the second rotating part 341 can rotate to drive the other end of the second knocking part 342 to knock the valve plate toward the side of the clamping assembly 22, thereby accurately and quickly controlling the knocking frequency and knocking force of the valve plate, simulating the impact of impurities in the fluid on the gate valve in actual use, significantly improving the efficiency of gate valve performance detection, not using fluid for detection, avoiding leakage of the gate valve under test and splashing of fluid, reducing interference with the detection result, and improving the accuracy of the detection result.

[0112] In some embodiments, the flat gate valve performance detection device 100 also includes a control device 50, which is arranged on the platform 11; the control device 50 is electrically connected to the first lower telescopic member 3111, the second lower telescopic member 3121, the first upper telescopic member 3211, the second upper telescopic member 3221, the first rotating part 331 and the second rotating part 341 respectively; the pressure mechanism 30 also includes a first pressure sensor, a second pressure sensor and a third pressure sensor, the first pressure sensor is arranged on the first lower abutment portion 3112; the first pressure sensor is electrically connected to the control device 50; the first pressure sensor is used to detect the pressure of the first lower abutment portion 3112 acting on the valve plate; the second pressure sensor is arranged on the first upper abutment portion 3212; the second pressure sensor is electrically connected to the control device 50; the second pressure sensor is used to detect the pressure of the first upper abutment portion 3212 acting on the valve plate; the third pressure sensor is arranged on the first knocking portion 332; the third pressure sensor is electrically connected to the control device 50; the third pressure sensor is used to detect the pressure of the first knocking portion 332 acting on the valve plate. Among them, the control device 50 is used to control the first lower telescopic member 3111 and the second lower telescopic member 3121 according to the detection result of the first pressure sensor, control the first upper telescopic member 3211 and the second upper telescopic member 3221 according to the detection result of the second pressure sensor, and control the first rotating part 331 and the second rotating part 341 according to the detection result of the third pressure sensor.

[0113] It can be understood that the control device 50 is a device for controlling the movement of various components, for example, it can be a computing device such as a single chip microcomputer, a computer, etc. The first pressure sensor is a component for detecting the pressure of the first lower abutment portion 3112 acting on the valve plate. The first pressure sensor can be a piezoresistive pressure sensor, or an electromagnetic pressure sensor, but is not limited thereto. The second pressure sensor and the third pressure sensor can be the same as the first pressure sensor.

[0114] With such an arrangement, the pressure exerted on the valve plate by each component can be accurately controlled through the first pressure sensor, the second pressure sensor, the third pressure sensor and the control device 50, which is beneficial to improving the working efficiency of the detection, unifying the detection conditions, reducing the errors of manual control, and improving the accuracy and reliability of the performance detection results of the flat gate valve.

[0115] In some embodiments, the pressure mechanism 30 also includes a gate valve diameter detector, which is disposed on the platform 11; the gate valve diameter detector is electrically connected to the control device 50; the gate valve diameter detector is used to detect the diameter length of the inner wall of the gate valve under test and send the diameter length signal to the control device 50, and the control device 50 is also used to control the start and stop of the first lower pressure member 311, the second lower pressure member 312, the first upper pressure member 321 and the second upper pressure member 322 according to the diameter length signal.

[0116] It can be understood that the gate valve diameter detector is an instrument used to detect the diameter length of the inner side of the gate valve being tested, and may be, for example, a laser measuring instrument or an ultrasonic sensor, but is not limited thereto.

[0117] In this way, according to the inner diameter length of the gate valve under test detected by the gate valve diameter detector, the first lower pressure member 311 and the second lower pressure member 312 within the projection range of the inner wall of the gate valve under test on the detection surface 111, and the first upper pressure member 321 and the second upper pressure member 322 within the projection range of the inner wall of the gate valve under test on the end surface of the clamping assembly 22 are controlled to move to perform the detection work, so that the flat gate valve performance detection device 100 can be adaptively adjusted according to the different gate valves under test, so as to be able to detect gate valves under test of different sizes, which can improve the versatility of the flat gate valve performance detection device 100, reduce the cost of the detection equipment, and effectively improve the detection work efficiency.

[0118] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A flat gate valve performance detection device, characterized in that: include: A machine platform, the machine platform comprising a platform body; A positioning mechanism, the positioning mechanism is arranged on the machine platform; The positioning mechanism is used to fix the gate valve under test; A pressure-applying mechanism, the pressure-applying mechanism being arranged on the machine platform; the pressure-applying mechanism being used to apply pressure to any side of the valve plate of the gate valve under test to simulate water pressure, and to knock on any side of the valve plate to simulate impact of debris; A detection mechanism, the detection mechanism comprising a first detection component and a second detection component; the first detection component and the second detection component are both arranged on the positioning mechanism; the first detection component is used to detect deformation and leakage of one side of the valve plate; The second detection component is used to detect the deformation and leakage of the other side of the valve plate; The pressure applying mechanism comprises: A lower pressure component, the lower pressure component is arranged on the platform; the lower pressure component is used to apply pressure to a side of the valve plate close to the platform; An upper pressure component, the upper pressure component is arranged on the positioning mechanism; the upper pressure component is opposite to and spaced from the lower pressure component; the upper pressure component is used to apply pressure to a side of the valve plate away from the platform; A lower knocking member, the lower knocking member is arranged at one end of the lower pressure component away from the platform; the lower knocking member is used to knock the side of the valve plate close to the platform; An upper knocking piece is arranged at one end of the upper pressure assembly close to the platform; the upper knocking piece is used to knock the side of the valve plate away from the platform.

2. The flat gate valve performance detection device according to claim 1, characterized in that: The platform has a detection surface; the platform also includes a column; the column is arranged on the detection surface along the height direction of the platform; the positioning mechanism includes: A centering component, the centering component is arranged on the platform, and the axis of the centering component is perpendicular to the detection surface; the centering component is used to abut against a side of the gate valve under test close to the platform, and make the axis of the gate valve under test and the axis of the centering component collinear; A clamping assembly, wherein the clamping assembly is movably arranged on the column along the height direction of the column; the axis of the clamping assembly is colinear with the axis of the centering assembly; the clamping assembly is used to move toward the platform to abut against the side of the gate valve under test away from the platform, and push the gate valve under test toward the platform so that the side of the gate valve under test facing the platform abuts against the platform; Wherein, the upper pressure-applying component is arranged on the clamping component; the first detection component is arranged on the centering component, and the second detection component is arranged on the clamping component.

3. The flat gate valve performance detection device according to claim 2, characterized in that: The centering assembly comprises: An annular core portion, the annular core portion is arranged on the platform; A plurality of guide rails, wherein the plurality of guide rails are arranged on the platform body around the circumference of the annular core portion; the length direction of the guide rails intersects with the axis of the annular core portion; A plurality of centering pieces, wherein the centering pieces are movably arranged on the guide rails, and the plurality of centering pieces correspond to the plurality of guide rails one by one; and the distances from the plurality of centering pieces to the axis of the annular core portion are the same; Among them, the multiple centering pieces are used to respectively abut against the inner side wall of the gate valve under test facing the platform side, so that the axis of the gate valve under test is collinear with the axis of the annular core; the first detection component is located between any two adjacent centering pieces.

4. The flat gate valve performance detection device according to claim 3, characterized in that: The clamping assembly comprises: A moving member, one end of which is movably disposed on the column along the height direction of the column; A pressing member, one end of which is connected to the other end of the moving member; the second detection assembly is arranged on a side of the pressing member facing the platform; The pressing member is used to move toward the platform along with the moving member to push the gate valve under test toward the platform so that a side of the gate valve under test facing the platform abuts against the platform.

5. The flat gate valve performance detection device according to claim 2, characterized in that: The table body is provided with a first groove along the axial direction of the centering component; the table body is provided with a plurality of second grooves evenly around the circumference of the first groove, and the depth direction of the second groove is parallel to the axial direction of the centering component; the clamping component is provided with a third groove along its own axial direction; the clamping component is provided with a plurality of fourth grooves evenly around the circumference of the third groove, and the depth direction of the fourth groove is parallel to the axial direction of the clamping component; the axis of the first groove is collinear with the axis of the third groove; the lower pressure component comprises: a first lower pressure member, wherein the first lower pressure member is disposed in the first groove along an axial direction of the first groove; A plurality of second lower pressure members, wherein the plurality of second lower pressure members are disposed in the plurality of second grooves along the axis of the second groove in a one-to-one correspondence; Wherein, the lower knocking member is arranged at one end of the first lower pressure member close to the clamping assembly; the lower knocking member is located on the side of the first lower pressure member; The upper pressure component comprises: a first upper pressure member, the first upper pressure member being arranged in the third groove along the axis of the third groove; A plurality of second upper pressure members, wherein the plurality of second upper pressure members are disposed in the plurality of fourth grooves along the axis of the fourth groove in a one-to-one correspondence; Wherein, the upper knocking member is arranged at one end of the first upper pressure member close to the platform; the upper knocking member is located on the side of the first upper pressure member.

6. The flat gate valve performance detection device according to claim 5, characterized in that: The first lower pressure member comprises: A first lower telescopic member, wherein the first lower telescopic member is disposed in the first groove along the axis direction of the first groove; the first lower telescopic member can be telescoped along the axis direction of the first groove; A first lower abutting portion, the first lower abutting portion is arranged at one end of the first lower telescopic member facing the clamping assembly; the first lower abutting portion is used to abut against a side of the valve plate facing the platform body; The second lower pressure member comprises: A second lower telescopic member, the second lower telescopic member is arranged in the second groove along the axial direction of the second groove; the second lower telescopic member can be telescoped along the axial direction of the second groove; A second lower abutment portion, the second lower abutment portion being arranged at one end of the second lower telescopic member facing the clamping assembly; the second lower abutment portion being used to abut against a side of the valve plate facing the platform body; The first upper pressure member comprises: A first upper telescopic member, wherein the first upper telescopic member is disposed in the third groove along the axis direction of the third groove; the first upper telescopic member can be telescoped along the axis direction of the third groove; A first upper abutment portion, the first upper abutment portion being arranged at one end of the first upper telescopic member facing the platform; the first upper abutment portion being used to abut against a side of the valve plate facing the clamping assembly; The second upper pressure member comprises: A second upper telescopic member, wherein the second upper telescopic member is disposed in the fourth groove along the axis direction of the fourth groove; the second upper telescopic member can be telescoped along the axis direction of the fourth groove; A second upper abutment portion, the second upper abutment portion being arranged at one end of the second upper telescopic member facing the platform; the second upper abutment portion being used to abut against a side of the valve plate facing the clamping assembly; Wherein, the lower knocking member is arranged on the side surface of the first lower abutting portion; and the upper knocking member is arranged on the side surface of the first upper abutting portion.

7. The flat gate valve performance detection device according to claim 6, characterized in that: The lower pressure assembly further includes at least one lower knocking member, and the lower knocking member includes: a first rotating portion, the first rotating portion being rotatably disposed on a side surface of the first lower abutting portion about its own axis; the axis of the first rotating portion being perpendicular to the axis of the first groove; a first knocking part, one end of which is connected to the first rotating part; the length direction of the first knocking part is perpendicular to the axis of the first rotating part; the other end of the first knocking part is used to knock the side of the valve plate facing the platform; The upper pressure assembly further comprises at least one upper striking member, and the upper striking member comprises: a second rotating portion, the second rotating portion being rotatably disposed on a side surface of the first upper abutting portion about its own axis; the axis of the second rotating portion being perpendicular to the axis of the third groove; A second knocking part, one end of which is connected to the second rotating part; the length direction of the second knocking part is perpendicular to the axis of the second rotating part; the other end of the second knocking part is used to knock the side of the valve plate toward the clamping assembly.

8. The flat gate valve performance detection device according to claim 7, characterized in that: The flat gate valve performance detection device also includes a control device, which is arranged on the platform; the control device is electrically connected to the first lower telescopic member, the second lower telescopic member, the first upper telescopic member, the second upper telescopic member, the first rotating part and the second rotating part respectively; the pressure mechanism also includes: a first pressure sensor, the first pressure sensor being disposed on the first lower abutting portion; the first pressure sensor being electrically connected to the control device; the first pressure sensor being used to detect the pressure of the first lower abutting portion acting on the valve plate; a second pressure sensor, the second pressure sensor being disposed on the first upper abutting portion; the second pressure sensor being electrically connected to the control device; the second pressure sensor being used to detect the pressure of the first upper abutting portion acting on the valve plate; a third pressure sensor, the third pressure sensor being disposed on the first knocking part; the third pressure sensor being electrically connected to the control device; the third pressure sensor being used to detect the pressure of the first knocking part acting on the valve plate; Among them, the control device is used to control the first lower telescopic member and the second lower telescopic member according to the detection result of the first pressure sensor, control the first upper telescopic member and the second upper telescopic member according to the detection result of the second pressure sensor, and control the first rotating part and the second rotating part according to the detection result of the third pressure sensor.

9. The flat gate valve performance detection device according to claim 8, characterized in that: The pressure mechanism also includes a gate valve diameter detector, which is arranged on the platform; the gate valve diameter detector is electrically connected to the control device; the gate valve diameter detector is used to detect the diameter length of the inner wall of the gate valve under test and send a diameter length signal to the control device, and the control device is also used to control the start and stop of the first lower pressure member, the second lower pressure member, the first upper pressure member and the second upper pressure member according to the diameter length signal.

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