Valve sealing performance test equipment

Abstract

The utility model belongs to the technical field of detection equipment, and particularly relates to sealing performance test equipment for a valve, which comprises a bearing frame, a detection table, a movable frame, a sealing plate and a lifting mechanism, a detection table is arranged on the bearing frame, and medium flow is arranged in the detection table; the movable frame can move on the bearing frame in the first direction so as to be switched between a testing position and an idle position. The sealing plate is arranged above the detection table, the sealing plate can move on the movable frame in the vertical direction, and a medium flow channel is formed in the sealing plate; the lifting mechanism is arranged on the movable frame and can drive the sealing plate to be close to or away from the detection table; compared with the prior art, the testing equipment can move the structure above the detection platform to an idle position when the valve is placed or taken down through the lifting equipment, so that the structures are prevented from colliding with the lifting equipment, and after the valve is placed, the structure above the detection platform is moved back to a testing position. And performing a sealing test on the valve.

Description

Technical Field

[0001] The utility model belongs to the technical field of testing equipment, and particularly relates to a sealing performance testing device for a valve. Background Art

[0002] The sealing performance test of a valve is a key step to ensure the quality and performance of the valve, and is of crucial significance for ensuring the safety, efficiency and reliability of an industrial system.

[0003] A common method for testing the sealing performance of a valve is to place the valve on a testing table. By closing the two ports (medium inlet end and medium outlet end) of the valve, and then filling the valve with a gas or liquid at a certain pressure to determine whether the valve can withstand a preset pressure value. When the current valve is placed on the testing table, one port of the valve is sealed by the surface of the testing table, and then the liftable sealing plate arranged above the testing table is lowered to seal the other port of the valve, so as to realize the sealing of the two ports of the valve. A medium flow channel is arranged in the sealing plate and the testing table, and the medium is filled into the valve through these medium flow channels, so as to realize the sealing performance test of the valve.

[0004] When testing a valve with a relatively large weight, it is often necessary to use a lifting device to transfer the valve to the testing table. However, a frame such as a gantry and a mechanism for driving the lifting and lowering of the sealing plate are currently fixed above the testing table. If the lifting device is not careful when transferring the valve, it will collide with these structures, posing a safety hazard. Therefore, it is necessary to improve the existing valve sealing performance testing equipment. Content of the Utility Model

[0005] The purpose of the utility model is to provide a sealing performance testing device for a valve aiming at the above existing technical problems. When placing or removing the valve through a lifting device, this testing device can move the structure above the testing table to an idle position to avoid the collision between these structures and the lifting device. After the valve is placed, the structure above the testing table is moved back to the testing position to conduct the sealing performance test on the valve.

[0006] In view of this, the utility model provides a sealing performance testing device for a valve, including:

[0007] A bearing frame, on which a testing table is arranged. A medium flow channel is arranged in the testing table, and the medium flow channel penetrates through the upper surface and the side wall of the testing table;

[0008] A movable frame, which can move on the bearing frame along a first direction, so as to switch between a testing position and an idle position;

[0009] A sealing plate is arranged above the inspection table. The sealing plate can move vertically on the movable frame. A medium flow channel is arranged in the sealing plate, and the medium flow channel penetrates the bottom surface and the side wall of the sealing plate.

[0010] A lifting mechanism is arranged on the movable frame. The lifting mechanism can drive the sealing plate to approach or move away from the inspection table.

[0011] Among them, when the movable frame is in the test position, the sealing plate is directly above the inspection table. When the movable frame is in the idle position, the sealing plate, the lifting mechanism and the movable frame are all horizontally away from the inspection table.

[0012] In this technical solution, when it is necessary to place the valve on the inspection table or remove the valve on the inspection table through a lifting device, the movable frame can be first moved in the first direction to switch the movable frame from the test position to the idle position. At this time, the movable frame, the sealing plate and the lifting mechanism above the inspection table are all horizontally away from the inspection table, so that the lifting device will not collide with the structure above the inspection table during the process of transferring the valve. After the valve transfer is completed, especially after the valve is placed on the inspection table, the movable frame is then moved in the first direction to switch the movable frame from the idle position to the test position. At this time, the movable frame, the sealing plate and the lifting mechanism return above the inspection table again. The lifting mechanism drives the sealing plate to approach the valve and finally cooperates with the inspection table to seal the two ports of the valve for testing the valve.

[0013] In the above technical solution, further, a lead screw is arranged on the bearing frame along the first direction. A motor for driving the lead screw to rotate is arranged on the bearing frame. A transmission plate is slidably arranged on the bearing frame along the first direction. A nut coaxial with the lead screw is arranged on the transmission plate. The transmission plate is in transmission connection with the lead screw through the nut, and the movable frame is connected to the transmission plate.

[0014] In the above technical solution, further, the bearing frame is in a shape of a Chinese character 'hui'. Chute grooves are arranged on both side walls of the bearing frame perpendicular to the first direction. Both ends of the transmission plate respectively pass through the two chute grooves. The movable frame is in an inverted U shape, and both ends of the movable frame are respectively connected to both ends of the transmission plate.

[0015] In the above technical solution, further, extension sections are arranged on the inner walls of both ends of the movable frame, and the bottom surface of the extension section is in contact with the upper surface of the bearing frame.

[0016] In the above technical solution, further, the lifting mechanism includes a lifting cylinder and a connecting rod. The lifting cylinder is arranged on the movable frame. The lifting cylinder can drive the connecting rod to move in the vertical direction. One end of the connecting rod away from the lifting cylinder is connected to the sealing plate.

[0017] In the above technical solution, further, a locking mechanism is provided on the carrier. The locking mechanism can switch between a locked position and an unlocked position. When the locking mechanism is in the locked position, it can lock the movable frame in the test position. When the locking mechanism is in the unlocked position, it will not interfere with the movement of the movable frame in the first direction.

[0018] In the above technical solution, further, the locking mechanism includes a mounting frame, a rotating shaft, and an L-shaped plate. The mounting frame is arranged on the side wall of the carrier. The L-shaped plate is rotatably connected to the mounting frame through the rotating shaft. The end of the L-shaped plate away from the rotating shaft can approach and move away from the carrier in the direction perpendicular to the first direction. When the end of the L-shaped plate away from the rotating shaft approaches the carrier, the L-shaped plate coincides with the position of the movable frame in the vertical plane.

[0019] The beneficial effects of the present utility model are as follows:

[0020] 1. By installing structures such as the sealing plate and the lifting mechanism above the inspection table on the movable frame, the movable frame can move in the first direction to switch between the test position and the idle position. When placing the valve on the inspection table or removing the valve on the inspection table through the lifting device, the lifting device will not collide with the structures above the inspection table, ensuring the overall structural stability of the device and reducing potential safety hazards.

[0021] 2. By providing a lead screw, a transmission plate, and a motor for driving the rotation of the lead screw on the carrier, and arranging a nut connecting the lead screw on the transmission plate, and connecting the movable frame to the transmission plate, the rotation of the lead screw driven by the motor can control the switching of the movable frame between the test position and the idle position, eliminating the need for workers to manually drive the movable frame and reducing the labor intensity of the workers.

[0022] 3. By providing a locking mechanism on the carrier, when the movable frame is in the test position, switching the locking mechanism to the locked position can lock the movable frame in the test position, ensuring the stability of the valve testing process. When the movable frame needs to switch positions, switching the locking mechanism to the unlocked position allows the movable frame to switch positions conveniently. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a front three-dimensional structural schematic diagram of the movable frame in the test position in the present utility model.

[0025] Figure 2 This is a rear three-dimensional structural schematic diagram of the movable frame in the present utility model at the test position.

[0026] Figure 3 This is a front three-dimensional structural schematic diagram of the movable frame in the present utility model at the idle position.

[0027] Figure 4 This is a front view structural schematic diagram of the present utility model with hidden lines inside.

[0028] Figure 5 This is a rear view structural schematic diagram of the two ports of the sealing valve in the present utility model.

[0029] Figure 6 This is a side view structural schematic diagram of the movable frame in the present utility model at the test position.

[0030] Figure 7 This is a side view structural schematic diagram of the movable frame in the present utility model at the idle position.

[0031] Figure 8 is Figure 7 a cross-sectional structural schematic diagram in the A-A direction in

[0032] The markings in the figure are indicated as:

[0033] 1. Bearing frame; 2. Detection table; 3. Movable frame; 4. Sealing plate; 5. Lifting mechanism; 501. Lifting cylinder; 502. Connecting rod; 6. Lead screw; 7. Motor; 8. Transmission plate; 9. Nut; 10. Slide groove; 11. Extension section; 12. Mounting frame; 13. Rotating shaft; 14. L-shaped plate; X. First direction; Z. Vertical direction; Y. Medium flow channel; F. Valve. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0035] In the description of the present utility model, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0036] Embodiment 1

[0037] This embodiment provides a sealing performance testing device for a valve, including: a carrier 1, a testing platform 2, a movable frame 3, a sealing plate 4, and a lifting mechanism 5;

[0038] Please refer to Figures 1 - 3 any one of the drawings. The carrier 1 serves as the base of the entire device and can bear the weight of the entire device. A testing platform 2 is provided on the carrier 1. The testing platform 2 is fixed on the carrier 1. The fixing method between the testing platform 2 and the carrier 1 can adopt a detachable connection method, such as screw fastening;

[0039] The movable frame 3 can move on the carrier 1 along the first direction X, so as to switch between the testing position and the idle position; as Figure 1 、 Figure 2 and Figure 6 show a schematic diagram of the movable frame 3 in the testing position. As Figure 3 and Figure 7 show a schematic diagram of the movable frame 3 in the idle position; the driving mode of the movable frame 3 can be manually pushed by a worker, or a linear driving structure in the prior art can be set to drive the movable frame 3 to move. When using a structure with a self-locking function in the linear driving structure of the prior art, there is no need to additionally set a locking mechanism to drive the movable frame 3. When using a structure without a locking function in the linear driving structure of the prior art, or when manually pushed by a worker, a locking mechanism needs to be set on the carrier 1, or an object that blocks the relative movement of the movable frame 3 relative to the carrier 1 is placed on the ground to lock the movable frame 3 in the testing position to ensure the stability of the valve F during the testing process;

[0040] The locking mechanism in this embodiment can switch between a locked position and an unlocked position. When the locking mechanism is in the locked position, it can lock the movable frame 3 in the test position. When the locking mechanism is in the unlocked position, it will not interfere with the movement of the movable frame 3 in the first direction X. Any method in the prior art that can lock the movable frame 3 in the test position can be used as the locking mechanism in this embodiment.

[0041] The sealing plate 4 is arranged above the detection table 2. The sealing plate 4 can move vertically along the Z direction on the movable frame 3. The lifting mechanism 5 is arranged on the movable frame 3, and the lifting mechanism 5 can drive the sealing plate 4 to approach or move away from the detection table 2. When the movable frame 3 is in the test position, the sealing plate 4 is directly above the detection table 2. When the movable frame 3 is in the idle position, the sealing plate 4, the lifting mechanism 5 and the movable frame 3 are all horizontally away from the detection table 2.

[0042] Please refer to Figure 4 , a medium flow channel Y is arranged in the detection table 2, and the medium flow channel Y penetrates the upper surface and the side wall of the detection table 2. A medium flow channel Y is arranged in the sealing plate 4, and the medium flow channel Y penetrates the bottom surface and the side wall of the sealing plate 4. The ports of the medium flow channel Y on the side walls of the detection table 2 and the sealing plate 4 can be connected to a gas supply device or a liquid supply device through a connecting pipe to fill gas or liquid into the valve F sealed at both ports. The connection method of the ports of the medium flow channel Y to the gas supply device or the liquid supply device is well-known in the prior art and will not be elaborated here. Since the sealing plate 4 needs to follow the position change of the movable frame 3, a flexible hose with an appropriate length and deformability can be selected as the connecting pipe to adapt to the position change of the sealing plate 4. A control valve can be arranged on the connecting pipe or at the end of the connecting pipe to control the opening and closing of the connecting pipe, so as to control the pressure value in the valve F.

[0043] In this embodiment, when it is necessary to place the valve F on the detection table 2 or remove the valve F on the detection table 2 through a lifting device, the movable frame 3 can be first moved in the first direction X to switch the movable frame 3 from the test position to the idle position. Please refer to Figure 3 and Figure 7 , at this time, the movable frame 3, the sealing plate 4 and the lifting mechanism 5 above the detection table 2 are all horizontally away from the detection table 2, so that the lifting device will not collide with the structure above the detection table 2 during the transfer of the valve F. After the transfer of the valve F is completed, especially after the valve F is placed on the detection table 2, the movable frame 3 is then moved in the first direction X to switch the movable frame 3 from the idle position to the test position. Please refer to Figure 1 , Figure 2 and Figure 6 , at this time, the movable frame 3, the sealing plate 4 and the lifting mechanism 5 return above the detection table 2 again. The lifting mechanism 5 drives the sealing plate 4 to approach the valve F and finally cooperates with the detection table 2 to seal the two ports of the valve F for testing the valve F.Figure 5 Shows a schematic diagram when the two ports of valve F are sealed.

[0044] Embodiment 2

[0045] Based on Embodiment 1, this embodiment also discloses a driving method for the movable frame 3;

[0046] In this embodiment, please refer to Figure 2 , a lead screw 6 is arranged on the carrier 1 along the first direction X, a motor 7 for driving the lead screw 6 to rotate is arranged on the carrier 1, the motor 7 is installed at the end of the carrier 1, one end of the lead screw 6 is rotatably connected to the end of the carrier 1 away from the motor 7, and the other end of the lead screw 6 is connected to the output shaft of the motor 7 through a coupling. In addition, a speed reducer can be connected between the lead screw 6 and the motor 7 to increase the driving torque of the lead screw 6;

[0047] A transmission plate 8 is slidably arranged on the carrier 1 along the first direction X. The transmission plate 8 is located below the detection table 2. A nut 9 coaxial with the lead screw 6 is arranged on the transmission plate 8. The transmission plate 8 is drivingly connected to the lead screw 6 through the nut 9. When the motor 7 drives the lead screw 6 to rotate, it can drive the transmission plate 8 to move in the first direction X;

[0048] In this embodiment, the movable frame 3 is connected to the transmission plate 8. When the transmission plate 8 is driven by the lead screw 6, the transmission plate 8 will drive the movable frame 3 to move together, realizing the switching of the movable frame 3 between the test position and the idle position.

[0049] Embodiment 3

[0050] Based on Embodiment 2, this embodiment also discloses a connection method between the movable frame 3 and the transmission plate 8;

[0051] In this embodiment, please refer to Figure 3 , the carrier 1 is in a shape of a double rectangle with a hole in the middle. On the two side walls of the carrier 1 perpendicular to the first direction X, sliding grooves 10 are respectively arranged. The two ends of the transmission plate 8 respectively pass through the two sliding grooves 10; the movable frame 3 is in an inverted U shape. The middle part of the movable frame 3 is located above the detection table 2. The two ends of the movable frame 3 are placed on both sides of the detection table 2 and are respectively connected to the two ends of the transmission plate 8; the connection between the movable frame 3 and the transmission plate 8 can adopt a detachable connection method, such as threaded connection. Exemplarily, a plurality of threaded holes are arranged at the two ends of the transmission plate 8, through holes are arranged at the two ends of the movable frame 3, and the threaded end of the threaded fastener passes through the through hole and is threadedly connected to the threaded hole;

[0052] In this embodiment, the carrier 1 can adopt a split structure with one end detachable. After detaching the detachable end of the carrier 1, the transmission plate 8 can be installed into the two sliding grooves 10, or the transmission plate 8 can be detached from the two sliding grooves 10, which is convenient for the disassembly and assembly of the transmission plate 8.

[0053] Example 4

[0054] Based on Example 3, the structure of the movable frame 3 is further optimized in this example;

[0055] In this example, please refer to Figure 3 , extension segments 11 are provided on the inner walls at both ends of the movable frame 3, and the bottom surface of the extension segment 11 contacts the upper surface of the bearing frame 1;

[0056] When installing the movable frame 3 and the transmission plate 8, the two ends of the movable frame 3 are moved vertically downward along the Z direction towards the bearing frame 1. When the extension segments 11 at both ends of the movable frame 3 contact the bearing frame 1, the two ends of the movable frame 3 can be connected to the transmission plate 8. In this way, the cooperation between the extension segment 11 and the bearing frame 1 plays a positioning role in the installation of the movable frame 3 and the transmission plate 8, reducing the installation difficulty of the movable frame 3 and the transmission plate 8. At the same time, during the movement of the movable frame 3 in the first direction X, the extension segment 11 will slide on the upper surface of the bearing frame 1, improving the stability of the movement process of the movable frame 3.

[0057] Example 5

[0058] Based on Example 1, a structure of the lifting mechanism 5 is further disclosed in this example;

[0059] The lifting mechanism 5 includes a lifting cylinder 501 and a connecting rod 502. The lifting cylinder 501 is arranged on the movable frame 3, and the lifting cylinder 501 can drive the connecting rod 502 to move in the vertical direction Z. One end of the connecting rod 502 away from the lifting cylinder 501 is connected to the sealing plate 4;

[0060] Specifically, please refer to Figure 4 or Figure 5 , the lifting cylinder 501 is a tubular housing with a hollow interior. A piston (not shown in the figure) that moves axially is installed in the lifting cylinder 501. One end of the connecting rod 502 is connected to the piston, and the other end is connected to the sealing plate 4. By connecting a gas supply device or a liquid supply device to the lifting cylinder 501, the piston can be driven to move inside the lifting cylinder 501, thereby forming a pneumatic cylinder or a hydraulic cylinder;

[0061] After the piston is driven, it will move in the lifting cylinder 501 in the vertical direction Z, thereby driving the sealing plate 4 to approach or move away from the detection table 2 through the connecting rod 502.

[0062] Example 6

[0063] Based on Example 1, a structure of the locking mechanism is further disclosed in this example;

[0064] In this example, please refer to Figure 5, locking mechanisms are provided on both sides of the carrier 1. The locking mechanism includes a mounting frame 12, a rotating shaft 13, and an L-shaped plate 14;

[0065] Please refer to Figures 5 - 7 , the mounting frame 12 is arranged on the side wall of the carrier 1. The L-shaped plate 14 is rotatably connected to the mounting frame 12 through the rotating shaft 13. One end of the L-shaped plate 14 away from the rotating shaft 13 can approach and move away from the carrier 1 in the direction perpendicular to the first direction X. When one end of the L-shaped plate 14 away from the rotating shaft 13 approaches the carrier 1, the L-shaped plate 14 coincides with the position of the movable frame 3 in the vertical plane;

[0066] In this embodiment, the movement of the L-shaped plate 14 can be driven manually by a worker;

[0067] Taking Figure 5 the azimuth order in Figure 5 as an example, the left locking mechanism in Figure 5 is in the unlocked position, and at the unlocked position, one end of the L-shaped plate 14 away from the rotating shaft 13 can swing downward at a larger angle;

[0068] Please refer to Figure 6 Taking Figure 6 the azimuth order in Figure 6 as an example, when the movable frame 3 moves to the test position, that is,

[0069] the left side in Figure 6 , the left side of the movable frame 3 is blocked by the carrier 1 and cannot continue to move leftward. At this time, the locking mechanism is switched from the unlocked position to the locked position, and the left side surface of the L-shaped plate 14 contacts the right side surface of the movable frame 3. At this time, the L-shaped plate 14 can limit the movement of the movable frame 3 to the right.

[0069] The embodiments of the present invention are described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.

Claims

1. A valve sealing test device, characterized in that: include: A carrier frame (1), wherein a detection platform (2) is arranged on the carrier frame (1), a medium flow channel (Y) is arranged in the detection platform (2), and the medium flow channel (Y) runs through the upper surface and side wall of the detection platform (2); A movable frame (3), the movable frame (3) being movable on the carrier frame (1) along a first direction (X) so as to switch between a test position and an idle position; A sealing plate (4), the sealing plate (4) being arranged above the detection platform (2), the sealing plate (4) being movable along a vertical direction (Z) on the movable frame (3), the sealing plate (4) being provided with a medium flow channel (Y), the medium flow channel (Y) penetrating the bottom surface and the side wall of the sealing plate (4); A lifting mechanism (5), wherein the lifting mechanism (5) is arranged on the movable frame (3), and the lifting mechanism (5) can drive the sealing plate (4) to move closer to or away from the detection platform (2); When the movable frame (3) is located at the testing position, the sealing plate (4) is located directly above the testing platform (2); when the movable frame (3) is located at the idle position, the sealing plate (4), the lifting mechanism (5) and the movable frame (3) are all away from the testing platform (2) in the horizontal direction.

2. The valve sealing test device according to claim 1, characterized in that: A screw rod (6) is arranged on the support frame (1) along a first direction (X), a motor (7) for driving the screw rod (6) to rotate is arranged on the support frame (1), a transmission plate (8) is arranged on the support frame (1) to slide along the first direction (X), a nut (9) coaxial with the screw rod (6) is arranged on the transmission plate (8), the transmission plate (8) is connected to the screw rod (6) through the nut (9), and the movable frame (3) is connected to the transmission plate (8).

3. The valve sealing test device according to claim 2, characterized in that: The support frame (1) is in the shape of a U-shaped letter "U". Slide grooves (10) are provided on two side walls of the support frame (1) perpendicular to the first direction (X). The two ends of the transmission plate (8) respectively pass through the two slide grooves (10). The movable frame (3) is in the shape of an inverted U. The two ends of the movable frame (3) are respectively connected to the two ends of the transmission plate (8).

4. The valve sealing test device according to claim 3, characterized in that: Extended sections (11) are provided on the inner walls at both ends of the movable frame (3), and the bottom surface of the extended section (11) is in contact with the upper surface of the supporting frame (1).

5. The valve sealing test device according to claim 1, characterized in that: The lifting mechanism (5) comprises a lifting cylinder (501) and a connecting rod (502); the lifting cylinder (501) is arranged on the movable frame (3); the lifting cylinder (501) can drive the connecting rod (502) to move in a vertical direction (Z); and one end of the connecting rod (502) away from the lifting cylinder (501) is connected to the sealing plate (4).

6. The valve sealing test device according to claim 1, characterized in that: The carrier frame (1) is provided with a locking mechanism, which can be switched between a locking position and an unlocking position. When the locking mechanism is in the locking position, the movable frame (3) can be locked in a test position. When the locking mechanism is in the unlocking position, the locking mechanism will not interfere with the movement of the movable frame (3) in a first direction (X).

7. The valve sealing test device according to claim 6, characterized in that: The locking mechanism comprises a mounting frame (12), a rotating shaft (13) and an L-shaped plate (14); the mounting frame (12) is arranged on a side wall of the supporting frame (1); the L-shaped plate (14) is rotatably connected to the mounting frame (12) via the rotating shaft (13); an end of the L-shaped plate (14) away from the rotating shaft (13) can approach and move away from the supporting frame (1) in a vertical direction of a first direction (X); when the end of the L-shaped plate (14) away from the rotating shaft (13) approaches the supporting frame (1), the L-shaped plate (14) coincides with the position of the movable frame (3) on a vertical plane.

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