Regulating valve performance test fixture

Abstract

The utility model relates to a kind of adjusting valve performance test fixing device, including base, the cuboid long slot is equipped on base upper surface, its technical key points are: the horizontal lead screw is supported between the front, rear sidewall of cuboid long slot, horizontal lead screw front section is positive rotation direction section, rear section is negative rotation direction section, first sliding block is connected using first silk cover on positive rotation direction section, second sliding block is connected using second silk cover on negative rotation direction section, the left, right sidewall of cuboid long slot is equipped with guiding structure, the top surface of first sliding block and second sliding block is equipped with support frame respectively, the U-shaped clamping seat corresponding with adjusting valve end pipe is equipped on support frame upper end, U-shaped clamping seat is flaky and perpendicular to horizontal lead screw, through-hole for being connected with the flange disc of adjusting valve end portion is equipped on U-shaped clamping seat.This device solves the problem that existing fixing device is arranged around the valve to be tested and is easy to affect the assembly of detection piece, avoids interference with external pipeline and assembly tool, further improves test efficiency.

Description

Technical Field

[0001] This utility model relates to the field of control valve testing fixture technology, specifically to a control valve performance testing fixture. Background Technology

[0002] Performance testing of control valves before shipment includes: leakage tests, sealing tests, and opening / closing tests, to ensure that the valve can achieve its expected regulating function under normal operating conditions. Before conducting the above tests, the control valve needs to be positioned using tooling to prevent horizontal or rotational displacement during the testing process.

[0003] For example, CN 215414363 U discloses a fixing device for testing the performance of a control valve, which includes a fixed valve body clamp, a movable valve body clamp, and a driving component. The movable valve body clamp is opposite to the fixed valve body clamp and connected to the driving component. In use, one end flange of the control valve sample to be tested is attached to the fixed valve body clamp. The driving component is activated, driving the movable valve body clamp closer to the fixed valve body clamp, and the movable valve body clamp is pressed against the other end flange of the control valve sample, thereby clamping the sample. The driving component moves the movable valve body clamp away from the fixed valve body clamp, thus releasing the sample. This fixing device fixes the control valve sample by the clamping force between the movable and fixed valve body clamps, aiming to reduce manual labor intensity and improve testing efficiency. However, the following problems still exist in use: the fixed valve body clamp, movable valve body clamp, guide rod, and driving component are arranged around the control valve to be tested, which can easily interfere with the external pipelines and assembly tools used in performance testing, making testing operations inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a reasonably structured and reliable fixing device for testing the performance of regulating valves, solving the problem that existing fixing devices arranged around the valve under test can easily affect the assembly of the test piece, avoiding interference with external pipelines and assembly tools, and further improving testing efficiency.

[0005] The technical solution of this utility model is: A fixing device for testing the performance of a regulating valve includes a base. The upper surface of the base is provided with a cuboid-shaped groove. The key technical features are: a horizontal lead screw is supported between the front and rear side walls of the cuboid-shaped groove. The front section of the horizontal lead screw is a positive rotation section, and the rear section is a negative rotation section. A first threaded sleeve is provided on the positive rotation section and a first slider is connected to it. A second threaded sleeve is provided on the negative rotation section and a second slider is connected to it. The left and right side walls of the cuboid-shaped groove are provided with guide structures that cooperate with the first and second sliders. The top surfaces of the first and second sliders are respectively provided with support frames. The upper end of the support frame is provided with a U-shaped bracket corresponding to the end pipe of the regulating valve. The U-shaped bracket is plate-shaped and perpendicular to the horizontal lead screw. The U-shaped bracket is provided with a through hole for connecting to the end flange of the regulating valve.

[0006] In the aforementioned regulating valve performance testing fixing device, the first slider and the second slider are square sliders, and the guide structure includes a left guide rail and a right guide rail fixed to the left and right side walls of the cuboid-shaped groove. The left guide rail and the right guide rail are clamped on the left and right sides of the square slider.

[0007] In the aforementioned regulating valve performance testing fixing device, the left and right guide rails are right-angle guide rails. The vertical surface of the right-angle guide rail is in contact with a slider and a second slider. The horizontal surface of the right-angle guide rail is located on the upper surface of the base and is fixed by screws. The horizontal surface of the right-angle guide rail is provided with an adjustment elongated hole corresponding to the screw. The length direction of the adjustment elongated hole is perpendicular to the length direction of the horizontal lead screw.

[0008] The aforementioned regulating valve performance testing fixing device has a damping layer on the inner circumferential surface of the U-shaped bracket to increase friction.

[0009] The aforementioned regulating valve performance testing fixing device has a damping layer on the opposite sides of the two U-shaped brackets to increase friction.

[0010] The aforementioned regulating valve performance testing fixing device comprises a support frame consisting of a lower support part connected to the first slider or the second slider and an upper support part connected to the U-shaped bracket. The upper surface of the lower support part is provided with a slot corresponding to the upper support part, and a set of positioning screws is provided on both sides of the slot.

[0011] The aforementioned regulating valve performance testing fixing device has a drive motor fixed to the front end face of the base and connected to a horizontal lead screw.

[0012] The beneficial effects of this utility model are: Two U-shaped retainers support the end pipes on both sides of the regulating valve. A horizontal screw drives the first and second sliders to move in opposite directions, ultimately bringing the opposing sides of the two U-shaped retainers close to the flanges at the ends of the corresponding end pipes. This invention utilizes the horizontal thrust of the U-shaped retainers on the two flanges and the longitudinal support force on the end pipes to position the regulating valve under test. Simultaneously, the two U-shaped retainers are located inside the flanges of the valve body, freeing up space around the valve body, not affecting the connection to external pipelines, and not interfering with the use of the assembly tools required for testing. This solves the problem that existing fixing devices arranged around the valve under test can easily affect the assembly of the test piece. Positioning is convenient and quick, facilitating rapid testing and further improving testing efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 Sectional view along the AA direction; Figure 3 yes Figure 1 Cross-sectional view along the BB direction.

[0014] In the diagram: 1. Regulating valve, 101. End pipe, 102. Flange, 2. U-shaped bracket, 3. Upper support, 4. Lower support, 5. Positioning screw assembly, 6. Base, 7. Second slider, 8. Second threaded sleeve, 9. Negative rotation section, 10. Horizontal lead screw, 11. Positive rotation section, 12. First threaded sleeve, 13. First slider, 14. Drive motor, 15. Left guide rail, 16. Screw, 17. Through hole, 18. Right guide rail, 19. Rectangular slot, 20. Adjustment hole. Detailed Implementation

[0015] The present invention will be described in detail with reference to the accompanying drawings.

[0016] like Figures 1-3 As shown, the regulating valve performance testing fixing device includes a base 6, and the upper surface of the base 6 is provided with a cuboid-shaped groove 19.

[0017] A horizontal lead screw 10 is supported between the front and rear sidewalls of the cuboid groove 19, and a drive motor 14 connected to the horizontal lead screw 10 is fixed to the front end face of the base 6.

[0018] The horizontal lead screw 10 has a positive rotation section 11 at the front and a negative rotation section 9 at the rear. The positive rotation section 11 is provided with a first threaded sleeve 12, which connects to a first slider 13. The negative rotation section 9 is provided with a second threaded sleeve 8, which connects to a second slider 7. The left and right side walls of the cuboid groove 19 are provided with guide structures that cooperate with the first slider 13 and the second slider 7. In this embodiment, the first slider 13 and the second slider 7 are both square sliders. The guide structure includes a left guide rail 15 and a right guide rail 18 fixed to the left and right side walls of the cuboid groove 19, which clamp the square sliders on their left and right sides. The left guide rail 15 and the right guide rail 18 are right-angle guide rails. The vertical surface of the right-angle guide rail is in contact with the first slider 13 and the second slider 7. The horizontal surface of the right-angle guide rail is located on the upper surface of the base 6 and is fixed by screws 16. The horizontal surface of the right-angle guide rail is provided with an adjustment elongated hole 20 corresponding to the screw 16. The length direction of the adjustment elongated hole 20 is perpendicular to the length direction of the horizontal lead screw 10.

[0019] The top surfaces of the first slider 13 and the second slider 7 are respectively provided with support frames. The upper end of the support frame is provided with a U-shaped bracket 2 corresponding to the regulating valve end pipe. In this embodiment, the support frame consists of a lower support part 4 connected to the first slider 13 or the second slider 7 and an upper support part 3 connected to the U-shaped bracket 2. The upper surface of the lower support part 4 is provided with a slot corresponding to the upper support part 3, and positioning screw groups 5 are provided on both sides of the slot. The U-shaped bracket 2 is plate-shaped and perpendicular to the horizontal lead screw 10. The U-shaped bracket 2 is provided with a through hole 17 for connecting to the regulating valve end flange 102. The inner circumferential surface of the U-shaped bracket 2 is provided with a damping layer. The opposite sides of the two U-shaped brackets 2 are provided with damping layers.

[0020] Working principle: 1. Place the regulating valve 1 to be tested on the two U-shaped brackets 2, that is, the two U-shaped brackets 2 support the end pipes 101 on both sides of the regulating valve 1 respectively, and the staff temporarily supports the bottom of the valve body of the regulating valve 1.

[0021] 2. Start the drive motor 14 to drive the horizontal lead screw 10 to rotate, thereby driving the first slider 13 and the second slider 7 to move in opposite directions, so that the opposite sides of the two U-shaped brackets 2 are close to the flanges 102 at the ends of the corresponding side end pipes 101. The positioning of the regulating valve 1 is achieved by tightening and supporting the two flanges 102.

[0022] 3. At this time, the through holes 17 on the two U-shaped brackets 2 correspond to the through holes on the flange 102. During the inspection, the U-shaped brackets 2, the flange 102 and the external pipeline are connected together using bolt pairs.

[0023] 4. The split design of the support frame facilitates the replacement of the U-shaped bracket 2 to accommodate end pipes 101 and flanges 102 of different sizes and specifications.

[0024] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. A fixing device for testing the performance of a regulating valve, comprising a base, wherein the upper surface of the base is provided with a cuboid-shaped groove, characterized in that: A horizontal lead screw is supported between the front and rear sidewalls of the cuboid-shaped groove. The front section of the horizontal lead screw is a positive rotation section, and the rear section is a negative rotation section. A first threaded sleeve is provided on the positive rotation section and is used to connect to a first slider. A second threaded sleeve is provided on the negative rotation section and is used to connect to a second slider. The left and right sidewalls of the cuboid-shaped groove are provided with guide structures that cooperate with the first and second sliders. The top surfaces of the first and second sliders are respectively provided with support frames. The upper end of the support frame is provided with a U-shaped bracket corresponding to the end pipe of the regulating valve. The U-shaped bracket is plate-shaped and perpendicular to the horizontal lead screw. The U-shaped bracket is provided with a through hole for connecting to the end flange of the regulating valve.

2. The regulating valve performance testing fixing device according to claim 1, characterized in that: The first slider and the second slider are both square sliders. The guide structure includes a left guide rail and a right guide rail fixed to the left and right side walls of the cuboid groove. The left guide rail and the right guide rail are clamped on the left and right sides of the square slider.

3. The regulating valve performance testing fixing device according to claim 2, characterized in that: The left and right guide rails are right-angle guide rails. The vertical surface of the right-angle guide rail is in contact with a slider and a second slider. The horizontal surface of the right-angle guide rail is located on the upper surface of the base and is fixed by screws. The horizontal surface of the right-angle guide rail is provided with an adjustment elongated hole corresponding to the screw. The length direction of the adjustment elongated hole is perpendicular to the length direction of the horizontal lead screw.

4. The regulating valve performance testing fixing device according to claim 1, characterized in that: The inner circumferential surface of the U-shaped card holder is provided with a damping layer.

5. The regulating valve performance testing fixture according to claim 1, characterized in that: The two U-shaped card holders have a damping layer on their opposite sides.

6. The regulating valve performance testing fixture according to claim 1, characterized in that: The support frame consists of a lower support part connected to the first slider or the second slider and an upper support part connected to the U-shaped card seat. The upper surface of the lower support part is provided with a slot corresponding to the upper support part, and a set of positioning screws is provided on both sides of the slot.

7. The regulating valve performance testing fixture according to claim 1, characterized in that: The front end face of the base is fixed with a drive motor that is connected to a horizontal lead screw.

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