Clamping tool for valve group test

Abstract

The utility model belongs to the technical field of test tool manufacturing, and particularly relates to a valve group test clamping tool which comprises a base, a first check block and a second check block are arranged at the two opposite ends of the base respectively, and a test module is arranged on the side, facing the second check block, of the first check block on the base through a pushing device. The testing module is provided with a pipe connecting plug through a radial sealing mover, the outer diameter of the end, back on to the testing module, of the pipe connecting plug is smaller than the outer diameter of the end, facing the testing module, of the pipe connecting plug, the distance between the testing module and the second check block is preset, and a valve set limiting stopper is arranged between the second check block and the first check block on the base. According to the valve group test clamping tool, the connection pipe plug is arranged on the test module through the radial sealing mover, so that when the connection pipe plug is inserted into the inlet of the valve group, the connection pipe plug and the inlet of the valve group can be always kept in a sealed and non-leakage state in the radial moving process of the connection pipe plug, and the test efficiency is improved. The problem of how to ensure the test accuracy is solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of test tool manufacturing, in particular to a valve group test clamping tool. BACKGROUND

[0002] After the valve group is manufactured, the flow inside the valve group needs to be tested. When testing, the connector plug on the test module is inserted into the inlet of the valve group, and then the flow on the test module flows into the valve group from the connector plug. The problem here is that because the model of each valve group is different, when the valve group is placed on the test clamping tool, the axis of the inlet of the valve group and the axis of the connector plug on the test module are not necessarily collinear. Although workers will place the valve group that matches the test module by visual inspection on the test clamping tool for detection during the test, there are still some errors, and the existence of these errors will cause a gap between the connector plug and the inlet of the valve group after the connector plug is inserted into the inlet of the valve group. Therefore, liquid will leak from the gap during the test, thereby causing inaccurate testing. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the application is to overcome the shortcomings of the prior art, by setting the connector plug on the test module through the radial sealing mover, a valve group test clamping tool is designed, so that when the connector plug is inserted into the inlet of the valve group, the connector plug and the inlet of the valve group are always in airtight and non-leakage state during the radial movement of the connector plug, thereby solving the problem of how to ensure accurate testing.

[0004] To achieve the above purpose, the application provides the following technical scheme:

[0005] A valve group test clamping tool, comprising a base, opposite ends of the base are respectively provided with first and second stop blocks, a test module is provided on the base through a pushing device on the side of the first stop block facing the second stop block, a connector plug is provided on the test module through a radial sealing mover, the outer diameter of the end of the connector plug away from the test module is smaller than the outer diameter of the end of the connector plug facing the test module, a predetermined distance is provided between the test module and the second stop block, and a valve group limiter is provided on the base between the second stop block and the first stop block.

[0006] Preferably, the pushing device comprises a gas cylinder and a movement guide, the gas cylinder is arranged on the first stop block, the piston rod of the gas cylinder is parallel to the connecting line segment between the first and second stop blocks, the free end of the piston rod is fixedly connected to the test module, and the movement guide guides the movement of the test module in the direction parallel to the piston rod during the movement of the test module controlled by the piston rod.

[0007] Preferably, the moving guide comprises a through hole and a guide rod, the through hole is arranged on the first stop block away from the cylinder, the axis of the through hole is parallel to the piston rod of the cylinder, the guide rod is in sliding connection with the through hole between two ends of the guide rod, one end of the guide rod towards the second stop block is fixedly connected with the test module, and the length of the guide rod is greater than or equal to the distance between the test module and the second stop block when the test module is close to the first stop block.

[0008] Preferably, the radial sealing moving device comprises an expansion port and a first sealing ring, the expansion port is coaxially arranged on the test module at the output port of the test module, the inner diameter of the expansion port is greater than the inner diameter of the output port, a first mounting groove is coaxially arranged on the end face of the pipe plug, the first sealing ring is located in the first mounting groove, one end of the pipe plug provided with the first mounting groove is located in the expansion port, and the end face of the pipe plug towards the output port is in abutment with the bottom face of the expansion port, the inner diameter of the expansion port is greater than the inner diameter of the one end of the pipe plug in the expansion port; the inner diameter of the first sealing ring is greater than the inner diameter of the output port, and no matter how the pipe plug moves radially in the expansion port, the projection of the output port on the end face of the expansion port is always located in the projection of the first sealing ring on the end face of the expansion port.

[0009] Preferably, a protrusion is arranged on the outer circumferential face of one end of the pipe plug towards the expansion port, one end of the expansion port away from the output port is provided with an internal thread, an external thread nut is coaxially inserted into the expansion port and connected with the internal thread, the inner diameter of the external thread nut is greater than the maximum outer diameter of the pipe plug, and the end face of the external thread nut inserted into the expansion port is in abutment with the end face of the protrusion towards the outside of the expansion port.

[0010] Preferably, the first mounting groove is arranged on the protrusion.

[0011] Preferably, a second mounting groove is coaxially arranged on the circumferential face of the protrusion, a second sealing ring is coaxially and fixedly arranged in the second mounting groove, the outer circumferential face of the second sealing ring is in abutment with the inner circumferential face of the expansion port, and the elasticity of the second sealing ring is greater than the elasticity of the first sealing ring.

[0012] Preferably, the valve group limiter comprises a fixed stop block and a movable stop block, the fixed stop block and the movable stop block are both located between the second stop block and the test module, a preset distance is provided between the movable stop block and the fixed stop block, and the included angle between the connection line segment between the movable stop block and the fixed stop block and the connection line segment between the second stop block and the first stop block is 0-180°.

[0013] Preferably, the connecting line segment between the movable block and the fixed block is perpendicular to the connecting line segment between the second block and the first block.

[0014] Preferably, a slot cooperating with the movable block is arranged on the base between the second block and the test module, and a preset distance is arranged between the slot and the fixed block.

[0015] Compared with the prior art, the application has the following beneficial effects:

[0016] 1. The application adopts a mode of arranging a pipe connector plug on a test module through a radial sealing mover, and designs a valve group test clamping tool, so that when the pipe connector plug is inserted into the inlet of the valve group, the pipe connector plug and the inlet of the valve group are always in a sealed and non-leakage state during the radial movement of the pipe connector plug, thereby solving the problem of how to ensure test accuracy.

[0017] 2. In the application, the arrangement of the expansion port and the first sealing ring makes the first sealing ring move radially with the pipe connector plug, and one side of the first sealing ring is in close contact with the root of the pipe connector plug, and the other side is in close contact with the bottom wall of the expansion port, thereby preventing liquid leakage during the radial movement of the pipe connector plug. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the application;

[0019] Figure 2 is Figure 1 an A-A sectional view in the application;

[0020] Figure 3 is Figure 2 an enlarged view of the position A in the application;

[0021] Figure 4 is a structural schematic view of the pipe connector plug in the application;

[0022] Figure 5 is a schematic view of the application when testing the valve group.

[0023] 1, base; 2, first block; 3, second block; 4, test module; 5, pipe connector plug; 6, air cylinder; 7, guide rod; 8, expansion port; 9, first sealing ring; 10, output port; 11, first mounting slot; 12, protrusion; 13, external thread nut; 14, second mounting slot; 15, second sealing ring; 16, fixed block; 17, movable block; 18, slot; 19, valve to be tested. DETAILED DESCRIPTION

[0024] As Figures 1-5As shown, a valve group test clamping tool includes a base 1, the base 1 is provided with a first stopper 2 and a second stopper 3 at opposite ends, respectively, a test module 4 is provided on the base 1 through a pushing device at a side of the first stopper 2 towards the second stopper 3, a pipe connector plug 5 is provided on the test module 4 through a radial sealing mover, an outer diameter of an end of the pipe connector plug 5 away from the test module 4 is smaller than an outer diameter of an end of the pipe connector plug 5 towards the test module 4, a preset distance is provided between the test module 4 and the second stopper 3, and a valve group limiter is provided on the base 1 between the second stopper 3 and the first stopper 2.

[0025] In the embodiment, when in use, the valve group 19 is placed between the second stopper 3 and the test module 4, then the valve group 19 is fixed by the valve group limiter, the test module 4 is pushed towards the valve group 9 by the pushing device until the pipe connector plug 5 on the test module 4 is inserted into the inlet or outlet of the valve group, then the fluid is introduced from the test module 4 into the valve group 19 or the fluid is introduced from the valve group 19 into the test module 4 to test the flow rate. Since the radial sealing mover is provided, when the valve group 19 is installed on the valve group limiter of the base 1, if there is a distance between the axis of the inlet or outlet on the valve group 19 and the axis of the pipe connector plug 5 on the test module 4 (that is, not collinear), the pipe connector plug 5 will move radially during the process of being inserted into the inlet or outlet of the valve group 19, and the sealing performance between the pipe connector plug 5 and the inlet or outlet of the valve group 19 will not be affected during the process of the radial movement of the pipe connector plug 5, so there will be no leakage, and thus the test result will not be affected.

[0026] As a preferred mode, the pushing device includes a cylinder 6 and a movement guide, the cylinder 6 is provided on the first stopper 2, a piston rod of the cylinder 6 is parallel to a connecting line segment between the first stopper 2 and the second stopper 3, a free end of the piston rod is fixedly connected to the test module 4, and the movement guide guides the test module to move in a direction parallel to the piston rod during the process of the piston rod controlling the movement of the test module 4. In this way, the first stopper 2 is pushed by the cylinder 6 to push the test module 4 towards the inlet or outlet of the valve group 19 fixed on the valve group limiter, and the purpose of the movement guide is to stabilize the test module 4 during the process of pushing the test module 4 to prevent the radial movement of the test module 4 during the process of pushing the test module 4.

[0027] As a preferred mode, the moving guide comprises a through hole provided on the first stopper 2 away from the cylinder 6, the axis of the through hole is parallel to the piston rod of the cylinder 6, the two ends of a guide rod 7 are in sliding connection with the through hole, one end of the guide rod 7 towards the second stopper 3 is fixedly connected with the test module 4, and the length of the guide rod 7 is greater than or equal to the distance between the test module 4 and the second stopper 3 when the test module 4 is close to the first stopper 2. After such arrangement, the guide rod 7 and the through hole can axially slide without radial movement, so that the linear movement of the test module 4 during pushing can be ensured.

[0028] As a preferred mode, the radial sealing moving device comprises an expansion port 8 and a first sealing ring 9, the expansion port 8 is coaxially provided on the test module 4 at the output port 10 of the test module 4, the inner diameter of the expansion port 8 is greater than that of the output port 10, a first mounting groove 11 is coaxially provided on the end face of the connector plug 5, the first sealing ring 9 is located in the first mounting groove 11, one end of the connector plug 5 provided with the first mounting groove 11 is located in the expansion port 8, and the end face of the connector plug 5 towards the output port 10 abuts against the bottom face of the expansion port 8, the inner diameter of the expansion port 8 is greater than that of the end of the connector plug 5 in the expansion port 8; the inner diameter of the first sealing ring 9 is greater than that of the output port 10, no matter how the connector plug 5 moves radially in the expansion port 8, the projection of the output port 10 on the end face of the expansion port 8 is always located in the projection of the first sealing ring 9 on the end face of the expansion port 8. After such arrangement, the first sealing ring 9 will move radially with the connector plug 5 during the radial displacement of the connector plug 5, at the same time, one side of the first sealing ring 9 abuts against the root of the connector plug 5, and the other side abuts against the bottom wall of the expansion port 8, thereby preventing liquid leakage during the radial movement of the connector plug 5.

[0029] As a preferred mode, a protrusion 12 is provided on the outer circumferential surface of one end of the connector plug 5 towards the expansion port 8, an inner thread is provided on one end of the expansion port 8 away from the output port 10, an outer thread nut 13 is coaxially inserted into the expansion port 8 and connected with the inner thread, the inner diameter of the outer thread nut 13 is greater than the maximum outer diameter of the connector plug 5, and the end face of the outer thread nut 13 inserted into the expansion port 8 abuts against the end face of the protrusion 12 towards the outside of the expansion port 8. The protrusion 12 and the outer thread nut 13 are provided to prevent the connector plug 5 from falling off from the expansion port 8.

[0030] As a preferred mode, the first installation groove 11 is arranged on the protrusion 12. This arrangement can ensure that the projection of the output port 10 on the end surface of the expansion port 8 is always within the projection of the first sealing ring 9 on the end surface of the expansion port 8, that is, during the radial movement of the connector plug 5, the first sealing ring 9 located in the first installation groove 11 can always ensure the air tightness between the output port 10 and the expansion port 8.

[0031] As a preferred mode, a second installation groove 14 is coaxially arranged on the circumferential surface of the protrusion 12, and a second sealing ring 15 is coaxially and fixedly arranged in the second installation groove 14. The outer circumferential surface of the second sealing ring 15 abuts against the inner circumferential surface of the expansion port 8, and the elasticity of the second sealing ring 15 is greater than that of the first sealing ring 9. After the second installation groove 14 and the second sealing ring 15 are arranged in this way, after the radial movement of the connector plug 5, the second sealing ring 15 can return to the coaxial state with the output port 10 due to the elastic effect.

[0032] As a preferred mode, the valve group limiter includes a fixed stop block 16 and a movable stop block 17 on the base 1. The fixed stop block 16 and the movable stop block 17 are both located between the second stop block 3 and the test module 4. A predetermined distance is provided between the movable stop block 17 and the fixed stop block 16. The angle between the connecting line segment between the movable stop block 17 and the fixed stop block 16 and the connecting line segment between the second stop block 3 and the first stop block 2 is 0-180°. By arranging the movable stop block 17, the valve group 19 can be easily disassembled and assembled on the base 1.

[0033] As a preferred mode, the connecting line segment between the movable stop block 17 and the fixed stop block 16 is perpendicular to the connecting line segment between the second stop block 3 and the first stop block 2. This arrangement is the best, so that the clamping force exerted by the movable stop block 17 and the fixed stop block 16 on the valve group 19 is just collinear and opposite.

[0034] As a preferred mode, an insertion slot 18 is arranged on the base 1 between the second stop block 3 and the test module 4, and cooperates with the movable stop block 17. A predetermined distance is provided between the insertion slot 18 and the fixed stop block 16. After this arrangement, during the placement of the valve group 19 on the base 1, the movable stop block 17 is first pulled out of the insertion slot 18, then the valve group 19 is pushed between the fixed stop block 16 and the insertion slot 18, and then the movable stop block 17 is inserted into the insertion slot 18, which can prevent the valve group 19 from sliding out of the insertion slot 18 to the outside of the base 1. When the valve group 19 needs to be disassembled from the base 1, the movable stop block 17 is pulled out of the insertion slot 18, and the valve group 19 can be pushed down from the base 1.

Claims

1. A valve assembly testing clamping fixture, characterized in that, The device includes a base (1), on which a first stop (2) and a second stop (3) are respectively provided at opposite ends. A test module (4) is provided on the side of the base (1) facing the second stop (3) via a pushing device. A connector plug (5) is provided on the test module (4) via a radial sealing mover. The outer diameter of the end of the connector plug (5) facing away from the test module (4) is smaller than the outer diameter of the end facing the test module (4). There is a preset distance between the test module (4) and the second stop (3). A valve group limiter is provided on the base (1) between the second stop (3) and the first stop (2).

2. The valve assembly testing clamping fixture according to claim 1, characterized in that, The pushing device includes a cylinder (6) and a moving guide. The cylinder (6) is mounted on the first stop (2). The piston rod of the cylinder (6) is parallel to the connecting line between the first stop (2) and the second stop (3). The free end of the piston rod is fixedly connected to the test module (4). During the process of the piston rod controlling the movement of the test module (4), the moving guide guides the test module to move in a direction parallel to the piston rod.

3. The valve assembly testing clamping fixture according to claim 2, characterized in that, The moving guide includes a through hole and a guide rod (7). The through hole is located on the first stop (2) away from the cylinder (6). The axis of the through hole is parallel to the piston rod of the cylinder (6). The two ends of the guide rod (7) are slidably connected to the through hole. One end of the guide rod (7) facing the second stop (3) is fixedly connected to the test module (4). The length of the guide rod (7) is greater than or equal to the distance between the test module (4) and the second stop (3) when the test module (4) is in close contact with the first stop (2).

4. The valve assembly testing clamping fixture according to claim 1, characterized in that, The radial sealing mover includes an expansion port (8) and a first sealing ring (9). The expansion port (8) is coaxially provided on the test module (4) at the output port (10) of the test module (4). The inner diameter of the expansion port (8) is larger than the inner diameter of the output port (10). A first mounting groove (11) is coaxially provided on the end face of the connector plug (5). The first sealing ring (9) is located in the first mounting groove (11). One end of the connector plug (5) with the first mounting groove (11) is located in the expansion port (8) and the connector... The end face of the plug (5) facing the output port (10) abuts against the bottom surface of the expansion port (8). The inner diameter of the expansion port (8) is larger than the inner diameter of one end of the connector plug (5) inside the expansion port (8). The inner diameter of the first sealing ring (9) is larger than the inner diameter of the output port (10). No matter how the connector plug (5) moves radially inside the expansion port (8), the projection of the output port (10) on the end face of the expansion port (8) is always located within the projection of the first sealing ring (9) on the end face of the expansion port (8).

5. The valve assembly testing clamping fixture according to claim 4, characterized in that, The connector plug (5) has a protrusion (12) on the outer circumferential surface of the end facing the expansion port (8). The expansion port (8) has an internal thread on the end facing away from the output port (10). An external thread nut (13) is coaxially inserted into the expansion port (8) and connected to the internal thread. The inner diameter of the external thread nut (13) is larger than the maximum outer diameter of the connector plug (5). The end face of the external thread nut (13) inserted into the expansion port (8) abuts against the end face of the protrusion (12) facing out of the expansion port (8).

6. The valve assembly testing clamping fixture according to claim 5, characterized in that, The first mounting groove (11) is provided on the protrusion (12).

7. The valve assembly testing clamping fixture according to claim 5, characterized in that, The second mounting groove (14) is coaxially provided on the circumferential surface of the protrusion (12). The second sealing ring (15) is coaxially fixed in the second mounting groove (14). The outer circumferential surface of the second sealing ring (15) abuts against the inner circumferential surface of the expansion port (8). The elasticity of the second sealing ring (15) is greater than that of the first sealing ring (9).

8. The valve assembly testing clamping fixture according to claim 1, characterized in that, The valve group limiter includes a fixed stop (16) and a movable stop (17) located on the base (1). The fixed stop (16) and the movable stop (17) are both located between the second stop (3) and the test module (4). There is a preset distance between the movable stop (17) and the fixed stop (16). The angle between the connecting line segment between the movable stop (17) and the fixed stop (16) and the connecting line segment between the second stop (3) and the first stop (2) is 0-180°.

9. A valve assembly testing clamping fixture according to claim 8, characterized in that, The connecting line segment between the movable stop (17) and the fixed stop (16) is perpendicular to the connecting line segment between the second stop (3) and the first stop (2).

10. A valve assembly testing clamping fixture according to claim 9, characterized in that, The base (1) has a slot (18) between the second stop (3) and the test module (4) that cooperates with the movable stop (17), and the slot (18) is at a preset distance from the fixed stop (16).

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