Valve testing equipment

Abstract

The embodiment of the utility model provides valve testing equipment. The valve test equipment comprises a mounting rack. A valve mounting seat, a first plugging piece and a first lifting mechanism are arranged on the mounting frame. The valve mounting seat is used for bearing a to-be-tested valve and sealing the first port. And the first plugging piece is used for sealing the second port. The first lifting mechanism comprises a connecting frame body and a driving assembly, the connecting frame body is fixedly mounted on the mounting frame, a valve rod push-pull piece is connected to the driving assembly, and the driving assembly is used for driving the valve rod push-pull piece to move in the first direction. When a to-be-tested valve is arranged on the valve mounting seat, the opening directions of the first port and the second port are parallel to the first direction, and the driving assembly can drive the clamping head on the valve rod push-pull piece to move to the position aligned with the central axis of a valve rod on the to-be-tested valve. The valve rod push-pull piece can clamp the valve rod through the clamping head and drive the valve rod to move along the central axis of the valve rod.

Description

Technical Field

[0001] This application relates to the field of valve testing, and particularly to a valve testing device. Background Art

[0002] A valve is a device used to control fluid flow. After production, it generally needs to be tested for its sealing performance. At this time, a valve testing device is required. When testing a valve, it is necessary to seal the port of the valve and use a valve stem pusher to clamp the valve stem of the valve. During the testing process, the valve stem is pushed and pulled by the valve stem pusher to adjust the opening and closing state of the valve, so as to test the sealing performance of the valve in various states.

[0003] In reality, there are various models of valves with different sizes. When a valve with a smaller size is directly placed in the valve testing device, there may be a height difference between the central axis of the valve stem of the valve and the valve stem pusher, resulting in the valve stem pusher being unable to clamp the valve stem of the valve. In the prior art, tooling pads corresponding to the valve size are usually set according to the valve model. When testing a valve, the corresponding tooling pad can be selected according to the valve model and placed under the valve to increase the height of the valve stem, so that the central axis of the valve stem is aligned with the valve stem pusher. However, the weight of the tooling pad is relatively heavy, resulting in a very cumbersome operation of installing the tooling pad, which greatly affects the efficiency of valve testing. Summary of the Utility Model

[0004] In view of this, this application provides a valve testing device. The first lifting mechanism of the valve testing device can drive the valve stem pusher to move in the first direction. Thus, when the valve to be tested is placed on the valve mounting seat, the clamping head of the valve stem pusher can be aligned with the central axis of the valve stem on the valve to be tested by driving the first lifting mechanism, so as to facilitate the clamping head to clamp the valve stem, without the need to additionally set a tooling pad, thereby avoiding the installation operation of the heavy tooling pad.

[0005] According to the first aspect of the embodiments of the present application, the embodiments of the present application provide a valve testing device for testing a valve to be tested, where the valve to be tested includes a first port and a second port with opposite opening directions. The valve testing device includes a mounting rack. A valve mounting seat, a first sealing member, and a first lifting mechanism are provided on the mounting rack. The valve mounting seat is used to carry the valve to be tested and seal the first port. The first sealing member is used to seal the second port. The first lifting mechanism includes a connecting frame body and a driving assembly. The connecting frame body is fixedly installed on the mounting rack, and a valve stem pushing and pulling member is connected to the driving assembly. The driving assembly is used to drive the valve stem pushing and pulling member to move in a first direction. Wherein, when the valve to be tested is placed on the valve mounting seat, the opening directions of the first port and the second port are parallel to the first direction, and the driving assembly can drive the clamping head on the valve stem pushing and pulling member to move to a position aligned with the central axis of the valve stem on the valve to be tested, so that the valve stem pushing and pulling member can clamp the valve stem through the clamping head and drive the valve stem to move along the central axis of the valve stem.

[0006] In some alternative embodiments, the first sealing member can move along the first direction and can cooperate with the valve mounting seat to clamp the valve to be tested.

[0007] In some alternative embodiments, the valve to be tested further includes a third port, the central axis of the third port coincides with the central axis of the valve stem, and a second sealing member and a second lifting mechanism are further provided on the mounting rack. The second sealing member is used to seal the third port of the valve to be tested. The second lifting mechanism is connected to the second sealing member and is used to drive the second sealing member to move in the first direction. Wherein, when the valve to be tested is placed on the valve mounting seat, the second lifting mechanism can align the second sealing member with the central axis of the third port.

[0008] In some alternative embodiments, a first driving module and a second driving module are further provided on the mounting rack. The first driving module is connected to the valve stem pushing and pulling member and is used to drive the clamping head of the valve stem pushing and pulling member to move in a second direction; the second direction is the direction parallel to the central axis of the valve stem when the valve to be tested is placed on the valve mounting seat. The second driving module is connected to the second sealing member and is used to drive the second sealing member to move in the second direction.

[0009] In some alternative embodiments, the valve mounting seat includes a mounting position and a movable carrier, and the device further includes a transport track, one end of which is connected to the entrance of the mounting position; the mounting position is for accommodating the carrier, and the carrier can move between the mounting position and the transport track; the carrier is for carrying the valve to be tested and sealing the first port of the valve to be tested.

[0010] In some alternative embodiments, a sealing structure and a support frame are arranged adjacent to each other on the carrier. The sealing structure is for sealing the first port of the valve to be tested, and the support frame is for supporting the valve neck on which the valve stem is installed when the valve to be tested is installed on the valve mounting seat; a positioning member is arranged on the support frame, and a distance measuring instrument is arranged on the valve stem pusher. The distance measuring instrument is fixedly connected to the clamping head; the distance measuring instrument is for detecting the distance between the positioning member and the distance measuring instrument in the second direction when the valve to be tested is clamped between the first sealing member and the valve mounting seat.

[0011] In some alternative embodiments, the valve mounting seat further includes a transition member, and the transition member is installed at the support position of the support frame, and the support position is for placing the valve neck; and, the transition member extends from the support frame towards the sealing structure in the second direction to expand the support range of the support frame.

[0012] In some alternative embodiments, at least two limiting holes are arranged on the carrier. The at least two limiting holes include a first limiting hole and a second limiting hole, and the device further includes at least two detachable limiting members; when the first limiting hole coincides with the first mounting hole on the first port, the second limiting hole coincides with the second mounting hole on the first port; the limiting members are inserted into the coincident first limiting hole and first mounting hole, and the coincident second limiting hole and second mounting hole.

[0013] In some alternative embodiments, the valve mounting seat includes at least two of the carriers, and the sizes of the sealing structures on different carriers are different to seal first ports of different sizes.

[0014] In some alternative embodiments, the first lifting mechanism and the second lifting mechanism are connected by a transmission belt. Driven by the transmission belt, the distance that the first lifting mechanism moves the valve stem pusher in the first direction is the same as the distance that the second lifting mechanism moves the second sealing member in the first direction.

[0015] In some alternative embodiments, the first lifting mechanism includes a first transmission wheel, and the second lifting mechanism includes a second transmission wheel; the first lifting mechanism is connected to the transmission belt through the first transmission wheel, and the second lifting mechanism is connected to the transmission belt through the second transmission wheel, and a first central axis of a rotating shaft of the first transmission wheel is parallel to a second central axis of a rotating shaft of the second transmission wheel; the device further includes a tensioning wheel engaged with the transmission belt, and the tensioning wheel is configured to apply a supporting force to the transmission belt in a direction perpendicular to a plane of the rotating shafts, and the plane of the rotating shafts is a plane where the first central axis and the second central axis are located. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a valve testing device provided by an alternative embodiment of the present application;

[0017] Figure 2 is a schematic structural diagram of another valve testing device provided by an alternative embodiment of the present application;

[0018] Figure 3 is a schematic diagram of a partial structure of an alternative embodiment of the present application;

[0019] Figure 4 is a schematic diagram of another partial structure of an alternative embodiment of the present application;

[0020] Figure 5 is a schematic diagram of yet another partial structure of an alternative embodiment of the present application.

[0021] LIST OF REFERENCE NUMERALS:

[0022] 100, valve testing device; 110, valve mounting seat

[0023] 111, mounting position; 112, carrier; 113, conveying track

[0024] 120, first plugging member

[0025] 1121, sealing structure; 1122, support frame; 1123, positioning member

[0026] 1124, limiting hole; 1125, limiting member

[0027] 130, valve stem pushing and pulling member

[0028] 131, clamping head; 132, cylinder; 133, distance measuring instrument

[0029] 140, first lifting mechanism; 150, mounting frame; 160, second lifting mechanism

[0030] 170, second plugging member

[0031] 181. First driving module 182. Second driving module 183. Third driving module

[0032] 184. Third lifting mechanism 185. Fifth driving module 186. Transmission belt

[0033] 187. First transmission wheel 188. Second transmission wheel 189. Gas injection device

[0034] 200. Valve to be tested 210. First port 220. Second port

[0035] 230. Third port 240. Valve stem 250. Valve neck

[0036] 260. Valve body M. Interface Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of this application clearer, the following will further describe the implementation manners of this application in detail with reference to the accompanying drawings.

[0038] In the description of this application, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this application.

[0039] As mentioned above, there are various models of valves with different sizes in reality. When a valve with a smaller size is directly placed in the valve testing device 100, there may be a height difference between the central axis of the valve stem 240 of the valve and the valve stem pusher 130, resulting in the valve stem pusher 130 being unable to clamp the valve stem 240 of the valve. In the prior art, tooling pads corresponding to the valve size are usually set according to the valve model. When testing the valve, the corresponding tooling pad can be selected according to the valve model and placed under the valve to increase the height of the valve stem 240 of the valve, so that the central axis of the valve stem 240 is aligned with the valve stem pusher 130. However, the weight of the tooling pad is relatively heavy, making the operation of installing the tooling pad very cumbersome and greatly affecting the efficiency of valve testing.

[0040] In the embodiments of the present application, a valve testing device 100 is used to test a valve to be tested 200. The valve to be tested 200 includes a first port 210 and a second port 220 with opposite opening directions. When the valve to be tested 200 is placed on a valve mounting seat 110, the opening directions of the first port 210 and the second port 220 are parallel to the first direction. The valve testing device 100 includes a mounting frame 150. A valve mounting seat 110, a first sealing member 120, and a first lifting mechanism 140 are provided on the mounting frame 150. The valve mounting seat 110 can carry the valve to be tested 200 and seal the first port 210 of the valve to be tested 200; through the first sealing member 120, the second port 220 of the valve to be tested 200 can be sealed; through the driving component of the first lifting mechanism 140, the valve stem pusher 130 can be driven to move along the first direction, so that when the valve to be tested 200 is placed on the valve mounting seat 110, the driving component of the first lifting mechanism 140 can drive the clamping head 131 of the valve stem pusher 130 to move to a position aligned with the central axis of the valve stem 240 on the valve to be tested 200, so as to facilitate the clamping head 131 to clamp the valve stem 240. There is no need to additionally set up a tooling spacer block, and the installation operation of the heavy tooling spacer block can be avoided. Only by adjusting the position of the valve stem pusher 130 through the preset first lifting mechanism 140 can the efficiency of valve testing be effectively improved.

[0041] It should be noted that the various specification drawings of the present application are only for facilitating the description and understanding of this embodiment, and do not serve as any limitation to the present application. They are not necessarily drawn to actual scale.

[0042] According to the first aspect of the embodiments of the present application, a valve testing device 100 is provided. It can be applied to the sealing performance testing of valves such as two-way valves and three-way valves. The valve testing device 100 provided by the embodiments of the present application will be described in detail below with reference to the drawings.

[0043] As Figure 1 shown, the valve testing device 100 provided by the embodiments of the present application includes a mounting frame 150, and a valve mounting seat 110, a first sealing member 120, and a first lifting mechanism 140 are provided on the mounting frame 150. The first sealing member 120 can be provided separately or on the mounting frame 150.

[0044] The valve mounting seat 110 is used to carry the valve to be tested 200 and seal the first port 210 of the valve to be tested 200.

[0045] Each port of the valve 200 to be tested may include a flange for installing the valve 200 to be tested. A sealing structure such as a rubber ring may be provided on the valve mounting seat 110. By clamping the sealing structure between the valve mounting seat 110 and the flange of the first port 210, the gap between the valve mounting seat 110 and the first port 210 can be blocked, so as to seal the first port 210 of the valve 200 to be tested by means of the valve mounting seat 110. An openable and closable through hole may also be provided on the valve 200 to be tested. Exemplarily, when the sealing mechanism is a sealing ring, the through hole may be provided inside the sealing ring. The through hole may be connected to a liquid injection or gas injection device. When the through hole is opened, the liquid injection or gas injection device can inject a liquid or gas medium into the valve 200 to be tested, and the sealing performance of the valve 200 to be tested can be detected by testing whether the valve 200 to be tested leaks liquid or gas.

[0046] A first plugging member 120 is used to seal the second port 220 of the valve 200 to be tested. The first plugging member 120 may be provided separately. During the test, the tester manually installs the first plugging member 120 on the second port 220 of the valve 200 to be tested to block the second port 220. The first plugging member 120 may also be directly or indirectly disposed on the mounting frame 150. During the test, the first plugging member 120 is driven to move towards the valve 200 to be tested until it cooperates with the valve mounting seat 110 to jointly clamp the valve 200 to be tested. The opening directions of the first port 210 and the second port 220 of the valve 200 to be tested are opposite. Similar to the valve mounting seat 110, the first plugging member 120 may also be provided with a sealing structure such as a rubber ring and an openable and closable through hole, and the specific setting method will not be elaborated here.

[0047] A first lifting mechanism 140 includes a connecting frame body and a driving component. The connecting frame body is fixedly installed on the mounting frame 150. A valve rod pushing and pulling member 130 is connected to the driving component. The driving component is used to drive the valve rod pushing and pulling member 130 to move along the first direction. Wherein, when the valve 200 to be tested is placed on the valve mounting seat 110, the opening directions of the first port 210 and the second port 220 are parallel to the first direction, as can be seen specifically in Figure 1The direction of the straight line L1. The driving assembly can drive the clamping head 131 on the valve stem pusher 130 to move to a position aligned with the central axis of the valve stem 240 on the valve to be tested 200. It should be understood that when the valve to be tested 200 is not installed, the present application can obtain the predetermined position where the central axis of the valve stem 240 on the valve to be tested 200 is located when the valve to be tested 200 is placed on the valve mounting seat 110 according to the size of the valve to be tested 200. Thus, when the valve to be tested 200 is not installed, the first lifting mechanism 140 can be controlled to drive the valve stem pusher 130 to move along the first direction according to this predetermined position, so that the valve stem pusher 130 moves to a predetermined position where the clamping head 131 can be aligned with the central axis of the valve stem 240 on the valve to be tested 200. It is also possible to control the first lifting mechanism 140 to drive the valve stem pusher 130 to move along the first direction after the valve to be tested 200 is placed on the valve mounting seat 110, so that the clamping head 131 on the valve stem pusher 130 is aligned with the central axis of the valve stem 240 on the valve to be tested 200.

[0048] The driving assembly of the first lifting mechanism 140 may include a screw rod parallel to the first direction, and the rotation of the screw rod drives the valve stem pusher 130 to move along the first direction. A track parallel to the first direction may be provided on the mounting frame 150. The driving assembly of the first lifting mechanism 140 may also include a screw rod parallel to the first direction and a track groove engaged with the track, so as to jointly guide the valve stem pusher 130 to move along the first direction based on the engaged track groove and track and the screw rod.

[0049] The valve stem pusher 130 is used to clamp the valve stem 240 through the clamping head 131 and drive the valve stem 240 to move along the central axis of the valve stem 240.

[0050] The clamping head 131 has an openable and closable structure. When the clamping head 131 is closed, the clamping head 131 can clamp the valve stem 240. When the clamping head 131 is opened, the clamping head 131 can be disengaged from the valve stem 240. The valve stem pusher 130 may include a clamping head driving mechanism connected to the clamping head 131. Specifically, the clamping head driving mechanism may include a driving device such as a cylinder or a motor. For example Figure 1 the cylinder 132 in, to drive the clamping head 131 to open or close.

[0051] In the embodiment of the present application, the mounting frame 150 of the valve testing device 100 is provided with: a valve mounting seat 110, a first plugging member 120, and a first lifting mechanism 140. The valve mounting seat 110 can carry the valve 200 to be tested and seal the first port 210 of the valve 200 to be tested; through the first plugging member 120, the second port 220 of the valve 200 to be tested can be sealed; the driving component of the first lifting mechanism 140 can drive the valve stem pushing and pulling member 130 to move in the first direction. When the valve to be tested is placed on the valve mounting seat 110, the driving component can drive the clamping head on the valve stem pushing member to move to a position aligned with the central axis of the valve stem on the valve to be tested, so that the clamping head 131 can clamp the valve stem 240, without the need to additionally set up a tooling spacer block, and the installation operation of the heavy tooling spacer block can be avoided. Only by adjusting the position of the valve stem pushing and pulling member 130 through the preset first lifting mechanism 140 can the efficiency of valve testing be effectively improved.

[0052] As Figure 1 shown, in some alternative embodiments, the first plugging member 120 is directly or indirectly provided on the mounting frame. The first plugging member 120 can move in the first direction and can cooperate with the valve mounting seat 110 to clamp the valve 200 to be tested. This facilitates testing, further improves the testing efficiency, and achieves a better sealing effect.

[0053] As Figure 1 shown, in some alternative embodiments, the valve to be tested may further include a third port 230. The central axis of the third port 230 coincides with the central axis of the valve stem, and the opening of the third port 230 is arranged opposite to the valve. The mounting frame 150 of the valve testing device 100 provided in the embodiment of the present application is further provided with a second lifting mechanism 160 and a second plugging member 170, and the second lifting mechanism 160 and the second plugging member 170 are connected.

[0054] The second lifting mechanism 160 is used to drive the second plugging member 170 to move in the first direction, so that when the valve 200 to be tested is placed on the valve mounting seat 110, the second plugging member 170 is aligned with the central axis of the valve stem 240.

[0055] The second plugging member 170 is used to seal the third port 230 of the valve 200 to be tested. Similar to the first plugging member 120, a sealing structure such as a rubber ring and an openable and closable through hole can also be provided on the second plugging member 170, and the specific setting method will not be elaborated here.

[0056] In the embodiments of the present application, the mounting bracket 150 may further be provided with a second lifting mechanism 160 and a second sealing member 170. The second lifting mechanism 160 can drive the second sealing member 170 to move along a first direction, so that when the valve under test 200 includes a third port 230 and the valve under test 200 is placed on the valve mounting seat 110, the second sealing member 170 is aligned with the central axis of the third port 230, and the third port 230 of the valve under test 200 can be sealed by the second sealing member 170. When the valve under test 200 includes a third port 230, the first port 210, the second port 220 and the third port 230 of the valve under test 200 can also be sealed simultaneously, thereby improving the applicability of the valve testing device 100 provided by the present application.

[0057] As Figure 1 shown, in some alternative embodiments, the device further includes a first driving module 181 and a second driving module 182.

[0058] The first driving module 181 can be connected to the valve stem pusher 130. The first driving module 181 is configured to drive the clamping head 131 of the valve stem pusher 130 to move along a second direction. Exemplarily, the first driving module 181 may include a driving device such as a cylinder or a motor. The clamping head 131 of the valve stem pusher 130 is driven to move along the second direction by the driving device such as a motor, so as to drive the valve stem 240 to move along the central axis of the valve stem 240 through the clamping head 131. It should be understood that the second direction is the direction parallel to the central axis of the valve stem 240 when the valve under test 200 is clamped between the first sealing member 120 and the valve mounting seat 110. Specifically, see Figure 1 the direction of the straight line L2 in

[0059] The second driving module 182 can be connected to the second sealing member 170. The second driving module 182 is configured to drive the second sealing member 170 to move along the second direction. Exemplarily, the first driving module 181 may include a driving device such as a cylinder or a motor. After the second sealing member 170 is aligned with the central axis of the third port 230, the driving device can drive the second sealing member 170 to move along the second direction towards the third port 230, so that the second sealing member 170 seals the third port 230 and clamps the valve under test 200 between the second sealing member 170, the first sealing member 120 and the valve mounting seat 110.

[0060] In an embodiment of the present application, the device further includes a first driving module 181 and a second driving module 182. The first driving module 181 can drive the clamping head 131 of the valve stem pusher 130 to move along the second direction, so as to drive the valve stem 240 to move along the central axis of the valve stem 240; the second driving module 182 can drive the second sealing member 170 to move along the second direction, so that the second sealing member 170 seals the third port 230 and clamps the valve under test 200 between the second sealing member 170, the first sealing member 120 and the valve mounting seat 110. The position between the clamping head 131 and the second sealing member 170 can be flexibly adjusted, which is convenient for installing and disassembling the valve under test 200 during the test of the valve under test 200.

[0061] As Figure 1 shown, as a feasible implementation manner, the first lifting mechanism 140 may include a third driving module 183 that drives the valve stem pusher 130 to move along the first direction. Exemplarily, the third driving module 183 may include driving devices such as a cylinder and a motor, and the driving device drives the valve stem pusher 130 to move along the first direction. Similarly, the second lifting mechanism 160 may also include a fourth driving module that drives the second sealing member 170 to move along the first direction. Moreover, the valve testing device 100 may further include a third lifting mechanism 184 that drives the first sealing member 120 to move along the first direction, so as to press the first sealing member 120 against the first port 210 of the valve under test 200 through the third lifting mechanism 184, so that the first sealing member 120 seals the first port 210. The third lifting mechanism 184 may include a fifth driving module 185 that drives the first sealing member 120 to move along the first direction. The implementation manners of the fourth driving module and the fifth driving module 185 are similar to those of the third driving module 183, and will not be elaborated here.

[0062] As Figure 1 and Figure 2As shown, in some alternative embodiments, the valve mounting seat 110 includes a mounting position 111 and a movable carrier 112. Moreover, the valve testing device 100 provided in the embodiments of the present application may further include a conveying track 113. One end of the conveying track 113 is connected to the entrance of the mounting position 111, thereby providing a passage for the carrier 112 to enter and exit the mounting position 111. The mounting position 111 is used to accommodate the carrier 112. Correspondingly, the carrier 112 can move between the mounting position 111 and the conveying track 113. As a feasible implementation, balls or rollers may be provided in the conveying track 113 and the mounting position 111. The carrier 112 can be placed on the balls or rollers to reduce the friction between the carrier 112 and the conveying track 113 and the mounting position 111, facilitating the movement of the carrier 112 between the conveying track 113 and the mounting position 111. The balls or rollers in the mounting position can be provided on a bracket. A driving device for driving the bracket to move in a first direction may be provided on the side of the mounting position 111 facing away from the first sealing member 120, such as Figure 1 the cylinder 189 in

[0063] so that after the carrier 112 enters the mounting position 111, the driving device can drive the bracket to drive the balls or rollers thereon to contract towards the side of the mounting position facing away from the first sealing member 120, causing the carrier 112 to abut against the surface of the mounting position 111, which can prevent the carrier 112 from moving during the test.

[0064] The valve mounting seat 110 in the embodiments of the present application includes a mounting position 111 and a movable carrier 112. The valve testing device 100 may further include a conveying track 113 with one end connected to the entrance of the mounting position 111. Through this conveying track 113, the carrier 112 carrying the valve 200 to be tested can be conveyed to the mounting position 111. After the carrier 112 carrying the valve 200 to be tested enters the mounting position 111, the mounting position 111 can be used to clamp the carrier 112 and the valve 200 to be tested between the mounting position 111 and the first sealing member 120, thereby achieving the sealing of the first mounting port and the second mounting port of the valve 200 to be tested. Based on the solution of this embodiment, the valve 200 to be tested can be installed on the carrier 112 outside the mounting position 111, and the carrier 112 carrying the valve 200 to be tested can be moved to the mounting position 111 through the conveying track 113, which can reduce the limitation of installing the valve 200 to be tested and make the installation of the valve 200 to be tested more flexible.

[0065] As Figure 3As shown, in some alternative embodiments, a sealing structure 1121 and a support frame 1122 are disposed adjacent to each other on the carrier 112. The sealing structure 1121 is configured to seal the first port 210 of the valve under test 200, and the sealing structure 1121 can be Figure 3 a flexible sealing structure 1121 such as the rubber sealing ring shown, so as to seal the gap between the carrier 112 and the first port 210 through the sealing structure 1121.

[0066] The support frame 1122 is configured to support the valve neck 250 on which the valve stem 240 is installed on the valve under test 200 when the valve under test 200 is installed on the valve mounting seat 110. As Figure 4 and Figure 5 shown, a positioning member 1123 is disposed on the support frame 1122, and a distance measuring instrument 133 is disposed on the valve stem pusher 130. The distance measuring instrument 133 is fixedly connected to the clamping head 131; the distance measuring instrument 133 is configured to detect the distance between the positioning member 1123 and the distance measuring instrument 133 in the second direction when the valve under test 200 is clamped between the first plugging member 120 and the valve mounting seat 110. It should be understood that there should be no obstacle blocking the distance measurement of the distance measuring instrument 133 between the positioning member 1123 and the distance measuring instrument 133.

[0067] As Figure 4 and Figure 5 shown, the interface M between the valve neck 250 and the valve body 260 of the valve under test 200 is usually a plane. In this embodiment, the surface of the positioning member 1123 facing the distance measuring instrument 133 can be a positioning plane, and the distance between the positioning member 1123 and the distance measuring instrument 133 is the distance from the positioning plane to the distance measuring instrument 133.

[0068] By using the distance measuring instrument 133 to detect the distance between the positioning member 1123 and the distance measuring instrument 133 in the second direction, the distance that the valve stem pusher 130 drives the valve stem 240 to move can be measured according to the change in the distance between the positioning member 1123 and the distance measuring instrument 133 in the second direction. By stretching the valve stem 240 by the valve stem pusher 130 to the stretching limit of the valve stem 240, the distance measuring instrument 133 can detect the limit distance between the distance measuring instrument 133 and the positioning member 1123 when the valve stem 240 is stretched to the limit length. When the valve stem 240 is not stretched, the distance measuring instrument can detect the original distance between the distance measuring instrument 133 and the positioning member 1123 when the valve stem 240 is not stretched. Subtracting the original distance from the limit distance can obtain the maximum drop value of the valve stem 240 movement.

[0069] As Figure 4 and Figure 5As shown, as a feasible implementation, when the valve 200 to be tested is clamped between the first plugging member 120 and the valve mounting seat 110, the positioning plane of the positioning member 1123 is coplanar with the interface M between the valve neck 250 and the valve body, so as to position the interface M between the valve neck 250 and the valve body through the positioning member 1123. The distance between the rangefinder 133 and the clamping head 131 in the second direction is fixed. Based on the distance between the rangefinder 133 and the clamping head 131 in the second direction, and the distance between the clamping head 131 and the end face of the valve stem 240 when the clamping head 131 clamps the end of the valve stem 240, the distance between the rangefinder 133 and the end face of the valve stem 240 in the second direction when the clamping head 131 clamps the valve stem 240 can be obtained. After the valve stem pusher 130 stretches the valve stem 240 to the stretching limit of the valve stem 240, the rangefinder 133 can detect the limit distance between the rangefinder 133 and the positioning member 1123 when the valve stem 240 is stretched to the limit length. Subtracting the distance between the rangefinder 133 and the end face of the valve stem 240 in the second direction when the clamping head 131 clamps the valve stem 240 from the limit distance, the maximum stroke of the valve stem 240 can be obtained, that is, the maximum stroke from the end face of the end of the valve stem 240 extending out of the valve 200 to be tested to the interface M can be obtained.

[0070] In the embodiment of the present application, a sealing structure 1121 and a support frame 1122 are arranged adjacent to each other on the carrier 112. The first port 210 of the valve 200 to be tested can be sealed through the sealing structure 1121. When the valve 200 to be tested is installed on the valve mounting seat 110, the valve neck 250 on which the valve stem 240 is installed on the valve 200 to be tested can be supported through the support frame 1122. In addition, a positioning member 1123 is arranged on the support frame 1122, and a rangefinder 133 is arranged on the valve stem pusher 130. The rangefinder 133 is fixedly connected to the clamping head 131. When the valve 200 to be tested is clamped between the first plugging member 120 and the valve mounting seat 110, the rangefinder 133 can detect the distance between the positioning member 1123 and the rangefinder 133 in the second direction. By detecting this distance, the maximum drop value of the movement of the valve stem 240 and the maximum stroke of the valve stem 240 can be detected, so as to test the valve 200 to be tested more comprehensively and effectively improve the practicability of the valve testing equipment.

[0071] As Figure 3As shown, in some alternative embodiments, at least two limiting holes 1124 are provided on the carrier 112. The at least two limiting holes 1124 may include a first limiting hole and a second limiting hole, and the device further includes at least two detachable limiting members 1125. When the first limiting hole coincides with the first mounting hole on the first port 210, the second limiting hole coincides with the second mounting hole on the first port 210. The limiting member 1125 can be inserted into the coincident first limiting hole and first mounting hole, and the coincident second limiting hole and second mounting hole, to limit the movement of the valve 200 to be tested along the surface of the carrier 112.

[0072] It should be understood that flanges for connecting to pipelines are generally provided on the first port 210, the second port 220, and the third port 230 of the valve 200 to be tested. Multiple mounting holes may be provided on the flange to facilitate connecting the flange to the pipeline through bolts passing through the mounting holes of the flange.

[0073] In the embodiments of the present application, a first limiting hole and a second limiting hole may be provided on the carrier 112. When the carrier 112 carries the valve 200 to be tested, if the first limiting hole coincides with the first mounting hole on the first port 210, the second limiting hole coincides with the second mounting hole on the first port 210. By inserting the limiting member 1125 into the coincident first limiting hole and first mounting hole, and the coincident second limiting hole and second mounting hole respectively, the first port 210 can be limited by the limiting member 1125 to prevent the valve 200 to be tested from moving along the surface of the carrier 112, so as to ensure that the valve 200 to be tested can be fixed between the first sealing member 120 and the carrier 112 when it is clamped by the carrier 112 and the first sealing member 120.

[0074] When the limiting holes 1124 are provided on the carrier 112, the presence of the limiting holes 1124 will affect the sealing of the carrier 112 to the valve to be tested. Therefore, the arrangement of the sealing structure 1121 should avoid the positions where the limiting holes 1124 are located. However, the positions of the mounting holes corresponding to the limiting holes 1124 on the valves 200 to be tested with different sizes may not be the same. The limiting holes 1124 corresponding to the mounting holes of the first port 210 in the small-sized valve 200 to be tested on the carrier 112 may affect the sealing of the first port 210 of the large-sized valve 200 to be tested. In this regard, in some alternative embodiments of the present application, the valve mounting seat 110 may include at least two carriers 112, and the sizes of the sealing structures 1121 on different carriers 112 are different to seal the first ports 210 with different sizes.

[0075] In the embodiments of the present application, the size of the sealing structure 1121 of the different bearing members 112 can be set according to the first ports 210 of the valves 200 to be tested of different models, so that different sealing structures 1121 can be used to seal different valves 200 to be tested.

[0076] In some alternative embodiments, the valve mounting seat 110 further includes a transition member. The transition member is mounted on the support position of the support frame 1122, and the support position is used for placing the valve neck 250; and, the transition member extends from the support frame 1122 in the second direction towards the sealing structure 1121 to expand the support range of the support frame 1122.

[0077] In the embodiments of the present application, when the first port 210 of the valve 200 to be tested is mounted on the sealing structure 1121 of the bearing member 112, but there is a gap between the valve neck 250 of the valve 200 to be tested and the support position of the support frame 1122 of the bearing member 112 in the second direction, a transition member can be mounted on the support position, and the transition member extending from the support frame 1122 in the second direction towards the sealing structure 1121 is used to support the valve neck 250 of the valve 200 to be tested, which can effectively expand the applicable range of the bearing member 112 and the valve testing device 100.

[0078] As Figure 1 shown, in some alternative embodiments, the first lifting mechanism 140 and the second lifting mechanism 160 are connected by a transmission belt 186. Driven by the transmission belt 186, the distance that the valve stem pusher 130 moves along the first direction by the first lifting mechanism 140 is the same as the distance that the second plugging member 170 moves along the first direction by the second lifting mechanism 160. It can be seen that the first lifting mechanism 140 can be driven by the third driving module 183, and the second lifting mechanism 160 can be synchronously driven by the transmission belt 186, that is, only the third driving module 183 is needed to drive the first lifting mechanism 140 and the second lifting mechanism 160 at the same time. At this time, the fourth driving module of the second lifting structure can be omitted, which can reduce the cost and align the valve stem pusher 130 and the second plugging member 170 with the valve stem 240 and the third port 230 of the valve 200 to be tested synchronously.

[0079] In the embodiment of the present application, through the transmission belt 186, the distance that the first lifting mechanism 140 moves the valve stem pusher 130 in the first direction can be the same as the distance that the second lifting mechanism 160 moves the second plugging member 170 in the first direction. Therefore, when testing the to-be-tested valve 200 having the third port 230, only one of the first lifting mechanism 140 and the second lifting mechanism 160 needs to be controlled to move, and the movement of the other can be synchronously controlled through the transmission belt 186. And only by setting in advance that the second plugging member 170 and the valve stem 240 stretching member are on the same straight line in the second direction, when the valve stem pusher 130 is aligned with the central axis of the valve stem 240 driven by the transmission belt 186, the second plugging member 170 can be simultaneously aligned with the central axis of the third port 230, which can effectively reduce the complexity of controlling the movement of the valve stem pusher 130 and the second plugging member 170.

[0080] As Figure 1 shown, in some alternative embodiments, the first lifting mechanism 140 includes a first transmission wheel 187, and the second lifting mechanism 160 includes a second transmission wheel 188; the first lifting mechanism 140 is connected to the transmission belt 186 through the first transmission wheel 187, the second lifting mechanism 160 is connected to the transmission belt 186 through the second transmission wheel 188, and the first central axis of the rotating shaft of the first transmission wheel 187 is parallel to the second central axis of the rotating shaft of the second transmission wheel 188.

[0081] The valve testing device 100 provided by the embodiment of the present application may further include a tensioning wheel meshing with the transmission belt 186, and the tensioning wheel is configured to apply a supporting force in a direction perpendicular to the plane of the rotating shaft to the transmission belt 186, and the plane of the rotating shaft is the plane where the first central axis and the second central axis are located.

[0082] In the embodiment of the present application, the first lifting mechanism 140 and the second lifting mechanism 160 can be driven through the first transmission wheel 187, the second transmission wheel 188 and the synchronous belt. And by setting a tensioning wheel meshing with the transmission belt 186, a supporting force in a direction perpendicular to the plane of the rotating shaft can be applied to the transmission belt 186 by the tensioning wheel, so as to avoid the transmission belt 186 between the first rotating shaft and the second rotating shaft from being loose, and keep the transmission belt 186 in a tensioned state, so as to ensure that the transmission belt 186 can effectively transmit between the first transmission wheel 187 and the second transmission wheel 188.

[0083] It should be noted that in this text, the nouns and pronouns related to people in this patent application are not limited to specific genders. Relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0084] Finally, it should be noted that the above are only the preferred embodiments of this application, which are only used to illustrate the technical solutions of this application and are not used to limit the protection scope of this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application are all included in the protection scope of this application.

Claims

1. A valve testing device (100) for testing a valve to be tested (200), wherein the valve to be tested (200) comprises a first port (210) and a second port (220) with opposite opening directions, characterized in that: The valve testing device (100) comprises a mounting frame (150), on which are arranged: A valve mounting seat (110) for supporting the valve to be tested (200) and sealing the first port (210); a first sealing member (120), used for sealing the second port (220); and A first lifting mechanism (140), comprising a connecting frame and a driving assembly, wherein the connecting frame is fixedly mounted on the mounting frame (150), and a valve stem push-pull member (130) is connected to the driving assembly, and the driving assembly is used to drive the valve stem push-pull member (130) to move along a first direction; Wherein, when the valve (200) to be tested is placed on the valve mounting seat (110), the opening directions of the first port (210) and the second port (220) are parallel to the first direction, and the driving component can drive the clamping head (131) on the valve stem push-pull member (130) to move to a position aligned with the central axis of the valve stem (240) on the valve (200) to be tested, so that the valve stem push-pull member (130) can clamp the valve stem (240) through the clamping head (131) and drive the valve stem (240) to move along the central axis of the valve stem (240).

2. The valve testing device (100) according to claim 1, characterized in that: The first blocking member (120) is capable of moving along the first direction, and is capable of cooperating with the valve mounting seat (110) to clamp the valve to be tested (200).

3. The valve testing device (100) according to claim 1, characterized in that: The valve to be tested (200) further comprises a third port (230), the central axis of the third port (230) coincides with the central axis of the valve stem (240), and the mounting frame (150) is further provided with: a second sealing member (170) for sealing the third port (230) of the valve to be tested (200); and a second lifting mechanism (160), connected to the second blocking member (170) and used to drive the second blocking member (170) to move along a first direction; Wherein, when the valve to be tested (200) is placed on the valve mounting seat (110), the second lifting mechanism (160) can align the second blocking member (170) with the central axis of the third port (230).

4. The valve testing device (100) according to claim 3, characterized in that: The mounting frame (150) is also provided with: a first driving module (181), which is connected to the valve stem push-pull member (130) and is used to drive the clamping head (131) of the valve stem push-pull member (130) to move along a second direction; the second direction is a direction parallel to the central axis of the valve stem (240) when the valve to be tested (200) is placed on the valve mounting seat (110); as well as A second driving module (182) is connected to the second blocking member (170) and is used to drive the second blocking member (170) to move along the second direction.

5. The valve testing device (100) according to claim 4, characterized in that: The valve mounting seat (110) comprises a mounting position (111) and a movable bearing member (112), and the device further comprises a transport track (113), one end of the transport track (113) being connected to an entrance of the mounting position (111); The mounting position (111) is used to accommodate the carrier (112), and the carrier (112) is capable of moving between the mounting position (111) and the transport track (113); the carrier (112) is used to carry the valve to be tested (200) and seal the first port (210) of the valve to be tested (200).

6. The valve testing device (100) according to claim 5, characterized in that: The bearing member (112) is provided with a sealing structure (1121) and a support frame (1122) which are located adjacent to each other, the sealing structure (1121) being used to seal the first port (210) of the valve to be tested (200), and the support frame (1122) being used to support a valve neck (250) of the valve stem (240) mounted on the valve to be tested (200) when the valve to be tested (200) is mounted on the valve mounting seat (110); A positioning member (1123) is provided on the support frame (1122), and a distance meter (133) is provided on the valve stem push-pull member (130); the distance meter (133) is fixedly connected to the clamping head (131); the distance meter (133) is used to detect the distance between the positioning member (1123) and the distance meter (133) in the second direction when the valve to be tested (200) is clamped between the first blocking member (120) and the valve mounting seat (110).

7. The valve testing device (100) according to claim 6, characterized in that: The valve mounting seat (110) also includes a transition piece, which is installed at a supporting position of the support frame (1122), and the supporting position is used to place the valve neck (250); and the transition piece extends from the support frame (1122) along the second direction toward the sealing structure (1121) to expand the supporting range of the support frame (1122).

8. The valve testing device (100) according to claim 6, characterized in that: The valve mounting seat (110) comprises at least two supporting members (112), and the sealing structures (1121) on different supporting members (112) have different sizes so as to seal the first ports (210) of different sizes.

9. The valve testing device (100) according to claim 5, characterized in that: At least two limiting holes (1124) are provided on the bearing member (112), the at least two limiting holes (1124) include a first limiting hole and a second limiting hole, and the device further includes at least two detachable limiting members (1125); When the first limiting hole coincides with the first mounting hole on the first port (210), the second limiting hole coincides with the second mounting hole on the first port (210); the limiting member (1125) is inserted into the coincident first limiting hole and first mounting hole, and into the coincident second limiting hole and second mounting hole.

10. The valve testing device (100) according to claim 3, characterized in that: The first lifting mechanism (140) and the second lifting mechanism (160) are connected via a transmission belt (186). Driven by the transmission belt (186), the first lifting mechanism (140) causes the valve stem push-pull member (130) to move along the first direction by a distance that is the same as the distance that the second lifting mechanism (160) causes the second blocking member (170) to move along the first direction.

11. The valve testing device (100) according to claim 10, characterized in that: The first lifting mechanism (140) includes a first transmission wheel (187), and the second lifting mechanism (160) includes a second transmission wheel (188); the first lifting mechanism (140) is connected to the transmission belt (186) via the first transmission wheel (187), and the second lifting mechanism (160) is connected to the transmission belt (186) via the second transmission wheel (188), and a first central axis of a rotating shaft of the first transmission wheel (187) is parallel to a second central axis of a rotating shaft of the second transmission wheel (188); The device also includes a tensioning wheel meshed with the transmission belt (186), and the tensioning wheel is configured to apply a supporting force to the transmission belt (186) in a direction perpendicular to the rotation axis plane, and the rotation axis plane is the plane where the first central axis and the second central axis are located.

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