Gate valve sealing performance testing device

Abstract

The utility model provides a gate valve sealing performance testing device which comprises a water tank. A lifting hydraulic rod is fixedly connected to the bottom face of an inner cavity of the water tank, a workbench is fixedly connected to the output end of the lifting hydraulic rod, an auxiliary detection assembly is installed at one end of the top face of the workbench, a dovetail groove is formed in the other end of the top face of the workbench, and an inflation detection assembly is installed at the other end of the top face of the workbench. The inflation detection assembly slides in the dovetail groove; the inflation detection assembly comprises a long rod, the other end of the top face of the workbench is fixedly connected with the long rod, the upper portion of one side of the long rod is fixedly connected with a front push telescopic rod, the output end of the front push telescopic rod is fixedly connected with a front push block, and the bottom face of the front push block slides in the dovetail groove. According to the utility model, through mutual cooperation of the water tank, the lifting hydraulic rod, the workbench, the auxiliary component and the inflation detection component, the sealing performance of the gate valve can be detected, and whether the gate valve is qualified or not can be judged.

Description

TECHNICAL FIELD

[0001] The utility model relates to gate valve leakproofness test technical field, concretely relates to a gate valve leakproofness testing device. BACKGROUND

[0002] The gate valve is a gate board of an opening and closing part, the movement direction of the gate board is perpendicular to the fluid direction, the gate valve can only be fully opened and closed, and cannot be adjusted and throttled. The gate valve is sealed by the contact between the valve seat and the gate board, and the sealing surface is usually built up with a metal material to increase the wear resistance, for example, 1Cr13, STL6, stainless steel and the like. The gate board has a rigid gate board and an elastic gate board, and according to the difference of the gate board, the gate valve is divided into a rigid gate valve and an elastic gate valve.

[0003] At present, the traditional gate valve needs to be detected for leakproofness after being assembled to determine whether the gate valve is qualified, and when detecting the gate valve, the staff first clamps and fixes the two ends of the gate valve through the clamping jaw, then seals and connects the two ends of the gate valve with the gas injection device respectively after being fixed, closes the inside of the gate valve after being connected, at this time, the outside air pump starts to inject air into the inside of the gate valve, then the valve body is immersed in water to watch whether the gate valve leaks, if not, the gate valve is removed from the water, then the clamping of one end is loosened and the gate valve is rotated to make the other end of the gate valve upward, then the staff injects water inward to watch whether the valve plate inside the gate valve leaks, if not, the other end of the gate valve is detected in the above manner to determine whether the valve plate inside leaks, so as to determine whether the gate valve is qualified.

[0004] Since the above detection of the leakproofness of the gate valve needs to be detected in multiple steps, the detection is complicated, and the detection method needs the gate valve to be switched back and forth between the two clamping jaws when detecting the inside of the gate valve, and the gate valve needs to be rotated after being clamped, so that the overall structure of the detection device is relatively complex and the operation difficulty is increased. UTILITY MODEL CONTENTS

[0005] In view of the defects in the prior art, the utility model provides a gate valve leakproofness testing device, which solves the problems mentioned in the background art.

[0006] To achieve the above purpose, the utility model realizes the following technical scheme:

[0007] The utility model provides a gate valve leakproofness testing device, including water tank, the bottom surface of the inner chamber of water tank is fixedly connected with lifting hydraulic rod, the output end of lifting hydraulic rod is fixedly connected with work table, one end of work table top is installed with auxiliary detection subassembly, the other end of work table top is provided with swallow -tail groove, the other end of work table top is installed with inflation detection subassembly, inflation detection subassembly is located in the inside slide of swallow -tail groove, the auxiliary detection subassembly between inflation detection subassembly is installed with gate valve, the inflation detection subassembly includes long pole, the other end of work table top is fixedly connected with long pole, the upper portion of one side of long pole is fixedly connected with front push telescopic link, the output end of front push telescopic link is fixedly connected with front push block, the bottom surface of front push block is located in the inside slide of swallow -tail groove, the middle part of front push block is installed with inflation detection part, the upper portion of one side of front push block is installed with clamping part.

[0008] Further, the inflation detection part includes a first air cylinder, the inside of the front push block is fixedly connected with the first air cylinder, one end of the first air cylinder is fixedly connected with an inflation hose, the other end of the first air cylinder is fixedly connected with a first sealing ring, the other end of the first air cylinder and the surface of the first sealing ring are fixedly connected with a first rubber ring.

[0009] Further, the clamping part includes a tensioning hydraulic rod, both ends of the upper portion of one side of the front push block are fixedly connected with the tensioning hydraulic rod, the output end of the tensioning hydraulic rod is fixedly connected with a bidirectional track, both ends of the inner cavity of the bidirectional track are slidably connected with an arc-shaped clamping plate, the middle part of one side of the bidirectional track is fixedly connected with a connecting block, the middle part of the connecting block is fixedly connected with a bidirectional pneumatic rod, the output end of the bidirectional pneumatic rod is fixedly connected with the arc-shaped clamping plate.

[0010] Further, the auxiliary detection subassembly includes a rectangular block, one end of the top surface of the work table is fixedly connected with the rectangular block, the middle part of the rectangular block is provided with an air flow channel, the inside of the rectangular block is provided with a vertical channel, the vertical channel is in communication with the inner cavity of the air flow channel, the inside of the vertical channel is installed with a sealing part, one side of the rectangular block and one end of the air flow channel are fixedly connected with a second sealing ring, one side of the rectangular block and the surface of the second sealing ring are fixedly connected with a second rubber ring, the other side of the rectangular block is fixedly connected with an auxiliary detection part.

[0011] Further, the sealing part includes a driving motor and a rotating sleeve, the top surface of the rectangular block is rotatably connected with the rotating sleeve, the top surface of the rotating sleeve is fixedly connected with a threaded worm gear, the middle part of the threaded worm gear is threadedly connected with a lifting threaded rod, the bottom surface of the lifting threaded rod is fixedly connected with a gate plate, the gate plate slides in the vertical channel, the top surface of the rectangular block is fixedly connected with the driving motor, the output shaft end of the driving motor is rotatably connected with the threaded worm gear through a worm.

[0012] Furthermore, the auxiliary detection component includes a column, which is fixedly connected to the other side of the rectangular block, the inner cavity of the column is connected to the inner cavity of the air channel, a float is placed inside the column, the top surface of the column is fixedly connected to a cross, the bottom surface of the cross is fixedly connected to a resistance damping rod, and the bottom surface of the resistance damping rod is fixedly connected to a disc.

[0013] The utility model provides a gate valve sealing test device. Compared with the existing technology, it has the following advantages:

[0014] 1. Push the telescopic rod forward to drive the forward push block to move, thereby driving the inflation detection component, the clamping component and the clamped gate valve to move toward the auxiliary detection component. At this time, the forward push of the telescopic rod causes the other end of the gate valve to form a contact seal with the auxiliary detection component, which is convenient for later detection;

[0015] 2. Through the cooperation of the rotating sleeve, threaded worm gear, gate plate and driving motor in the sealing component, it is possible to detect the entire exterior of the gate valve when the gate valve is opened and filled with gas, to see if there is any leakage or poor sealing of the gate valve as a whole;

[0016] 3. Through the cooperation of the two-way track, the arc-shaped clamping plate and the two-way pneumatic rod in the clamping component, one end of the gate valve can be clamped and fixed. Then, under the action of tightening the hydraulic rod, the first sealing ring and the first rubber ring are in contact with each other, so that the gate valve is in a sealed state when connected to the inflation detection component, which is convenient for subsequent detection;

[0017] 4. Through the cooperation between the float and the column in the auxiliary detection component, it can be determined whether the gate valve is sealed tightly when it is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Shows a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 Shows a schematic diagram of the overall cross-sectional structure of the utility model;

[0021] Figure 3 Shows a schematic diagram of the gate valve structure of the utility model;

[0022] Figure 4 The auxiliary detection assembly and the inflation detection assembly structure schematic diagram of the utility model are shown.

[0023] Figure 5 The clamping part structure schematic diagram of the utility model is shown.

[0024] Figure 6 The inflation detection part structure schematic diagram of the utility model is shown.

[0025] Figure 7 The auxiliary detection assembly local section structure schematic diagram of the utility model is shown.

[0026] As shown in the figure: 1, water tank; 2, lifting hydraulic rod; 3, workbench; 4, auxiliary detection assembly; 41, rectangular block; 42, air passage; 43, vertical passage; 44, sealing part; 441, driving motor; 442, rotating sleeve; 443, threaded worm gear; 444, lifting threaded rod; 445, gate plate; 45, second sealing ring; 46, second rubber ring; 47, auxiliary detection part; 471, cylinder; 472, floating ball; 473, cross; 474, abutting damping rod; 475, disc; 5, dovetail groove; 6, inflation detection assembly; 61, long rod; 62, front push telescopic rod; 63, front push block; 64, inflation detection part; 641, first air cylinder; 642, inflation hose; 643, first sealing ring; 644, first rubber ring; 65, clamping part; 651, tensioning hydraulic rod; 652, bidirectional track; 653, arc clamping plate; 654, connecting block; 655, bidirectional pneumatic rod; 7, gate valve. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the technical scheme in the embodiments of the utility model is described clearly and completely, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0028] Embodiment one

[0029] In order to solve the technical problems in the background art, a gate valve sealing property testing device is given as follows:

[0030] Combined Figures 1-7The utility model provides a gate valve leakproofness testing arrangement, including water tank 1, the bottom surface fixed connection of water tank 1 inner chamber has lifting hydraulic pressure rod 2, the output fixed connection of lifting hydraulic pressure rod 2 has workstation 3, and one end of workstation 3 top surface installs auxiliary detection subassembly 4, and the other end of workstation 3 top surface is provided with dovetail groove 5, and the other end of workstation 3 top surface installs aerate detection subassembly 6, and aerate detection subassembly 6 is located in dovetail groove 5 and slides, and the gate valve 7 is installed between auxiliary detection subassembly 4 and aerate detection subassembly 6, aerate detection subassembly 6 includes long rod 61, and the other end fixed connection of workstation 3 top surface has long rod 61, and the upper fixed connection of one side of long rod 61 has front push telescopic link 62, and the output fixed connection of front push telescopic link 62 has front push block 63, and the bottom surface of front push block 63 is located in dovetail groove 5 and slides, and the middle installation of front push block 63 has aerate detection part 64, and the upper installation of one side of front push block 63 has clamping part 65.

[0031] Through front push telescopic link 62 drive front push block 63 and move, thereby drive aerate detection part 64, clamping part 65 and the whole of the gate valve 7 after being clamped and move towards auxiliary detection subassembly 4, at this time, through the pushing of front push telescopic link 62, make the other end of gate valve 7 and auxiliary detection subassembly 4 form the resistance to touch seal, facilitate the detection of later period.

[0032] In the embodiment, aerate detection part 64 includes first air cylinder 641, the inside fixed connection of front push block 63 has first air cylinder 641, one end fixed connection of first air cylinder 641 has aerate hose 642, first air cylinder 641 other end fixed connection has first sealing ring 643, first air cylinder 641 other end and the surface fixed connection of first sealing ring 643 has first rubber ring 644, clamping part 65 includes tension hydraulic pressure rod 651, the upper two ends of one side of front push block 63 are respectively fixedly connected with tension hydraulic pressure rod 651, the output end of tension hydraulic pressure rod 651 is fixedly connected with bidirectional track 652, the inner chamber of bidirectional track 652 is slidably connected with arc-shaped clamping plate 653 at both ends, the middle of one side of bidirectional track 652 is fixedly connected with connecting block 654, the middle of connecting block 654 is fixedly connected with bidirectional pneumatic rod 655, the output end of bidirectional pneumatic rod 655 is fixedly connected with arc-shaped clamping plate 653.

[0033] Through the mutual cooperation of bidirectional track 652, arc-shaped clamping plate 653 and bidirectional pneumatic rod 655 in clamping part 65, the clamping fixation of one end of gate valve 7 is realized, then, under the action of tension hydraulic pressure rod 651, the mutual contact of first sealing ring 643 and first rubber ring 644 is realized, so that when gate valve 7 is connected with aerate detection part 64, it is in the sealed state, which is convenient for the detection of later period.

[0034] Embodiment two

[0035] As Figures 1-7As shown, based on the above embodiment, this embodiment further provides the following content:

[0036] The auxiliary detection component 4 includes a rectangular block 41, one end of the top surface of the workbench 3 is fixedly connected to the rectangular block 41, an air outlet channel 42 is provided in the middle of the rectangular block 41, a vertical channel 43 is provided inside the rectangular block 41, the vertical channel 43 is connected to the inner cavity of the air outlet channel 42, a sealing component 44 is installed inside the vertical channel 43, a second sealing ring 45 is fixedly connected to one side of the rectangular block 41 and at one end of the air outlet channel 42, a second rubber ring 46 is fixedly connected to one side of the rectangular block 41 and on the surface of the second sealing ring 45, and an auxiliary detection component 47 is fixedly connected to the other side of the rectangular block 41.

[0037] The second rubber ring 46 and the second sealing ring 45 cooperate with each other, so that the connection between the auxiliary detection component 4 and the gate valve 7 is in a sealed state.

[0038] Example 3

[0039] like Figures 1-7 As shown, based on the above embodiment, this embodiment further provides the following content:

[0040] The sealing component 44 includes a driving motor 441 and a rotating sleeve 442. The top surface of the rectangular block 41 is rotatably connected to the rotating sleeve 442. The top surface of the rotating sleeve 442 is fixedly connected to a threaded worm gear 443. The middle part of the threaded worm gear 443 is threadedly connected to a lifting threaded rod 444. The bottom surface of the lifting threaded rod 444 is fixedly connected to a gate plate 445. The gate plate 445 slides in the vertical channel 43. The top surface of the rectangular block 41 is fixedly connected to the driving motor 441. The output shaft end of the driving motor 441 is rotatably connected to the threaded worm gear 443 through a worm.

[0041] Through the mutual cooperation of the rotating sleeve 442, the threaded worm gear 443, the gate plate 445 and the driving motor 441 in the sealing component 44, it is possible to detect the entire exterior of the gate valve when the gate valve is opened and filled with gas to see whether there is leakage and poor sealing of the gate valve as a whole.

[0042] In this embodiment, the auxiliary detection component 47 includes a column 471, and the column 471 is fixedly connected to the other side of the rectangular block 41. The inner cavity of the column 471 is connected to the inner cavity of the air duct 42. A float 472 is placed inside the column 471. The top surface of the column 471 is fixedly connected to a cross 473, the bottom surface of the cross 473 is fixedly connected to a resistance damping rod 474, and the bottom surface of the resistance damping rod 474 is fixedly connected to a disc 475.

[0043] Through the cooperation of the float ball 472 and the cylinder 471 in the auxiliary detection component 47, it can be judged whether the sealing of the gate valve 7 is tight in the closed state.

[0044] The working principle and use process of the utility model are as follows:

[0045] In use:

[0046] In use, first, the staff places the gate valve 7 to be detected between the auxiliary detection assembly 4 and the inflation detection assembly 6, and also needs one end of the gate valve 7 to be located between the two sets of arc-shaped clamping plates 653. At this time, the bidirectional pneumatic rod 655 is started, and when the bidirectional pneumatic rod 655 works, it will drive the two sets of arc-shaped clamping plates 653 to move close to each other, so that one end of the gate valve 7 is clamped. After clamping, the tensioning hydraulic rod 651 is started, and when the tensioning hydraulic rod 651 works, it will drive the bidirectional track 652, the arc-shaped clamping plate 653 and one end of the gate valve 7 to move towards the first air cylinder 641. When the gate valve 7 moves, one end of the gate valve 7 will contact the first sealing ring 643. After contact, under the action of the first rubber ring 644, the sealing between the gate valve and the first air cylinder 641 is realized. After sealing, the front pushing telescopic rod 62 will push the front pushing block 62 to slide in the dovetail groove 5. When the front pushing block 62 moves, it will drive the inflation detection component 64, the clamping component 65 and the gate valve 7 to move close to the auxiliary detection assembly 4, until the other end of the gate valve contacts the second sealing ring 45. At the same time, under the action of the second rubber ring 46, the sealing between the gate valve 7 and the auxiliary detection assembly 4 is realized.

[0047] After installation is completed, detection is started,

[0048] In the first step of detection, the staff closes the gate valve 7, and then the high-pressure pump outside injects gas into the first air cylinder 641 from the inflation hose 642. At this time, the gas enters one end of the gate valve 7 from the first air cylinder 641. Since the gate valve is in the closed state at this time, the staff can observe whether the float ball 472 in the cylinder 471 is blown up by the gas. If it is blown up, it means that the valve plate inside the gate valve is not sealed tightly. If the float ball 472 is not blown up by the gas, it means that the valve plate inside the gate valve 7 is well sealed. When the detection is in the sealed state, the staff can drive the valve plate in the gate valve 7, and then the gas flow flows into the air passage 42 from one end of the gate valve 7. At this time, the staff can observe that the float ball is blown by the high-pressure gas and contacts the bottom surface of the disc 475. At the same time, the disc 475 is in contact with the damping rod 474, so that the float ball floats at the bottom of the disc 475. At the same time, the high-pressure gas flows away between the float ball 472 and the inner wall of the cylinder 471;

[0049] The second step of detection, at this time, the staff starts the driving motor 441, the driving motor 441 will drive the lifting threaded rod 444 to move downward under the action of the worm gear matching threaded worm gear 443, when the lifting threaded rod 444 moves downward, the gate plate 445 will be moved downward, when the gate plate 445 moves downward, at this time, the air passage 42 will be blocked, after being blocked, at this time, the staff observes whether the floating ball 472 floats up, if not, it represents that the gate valve 7 is full of gas and has no leakage, at this time, the lifting hydraulic rod 2 works, when the lifting hydraulic rod 2 works, the workbench 3, the auxiliary detection assembly 4, the inflation detection assembly 6 and the gate valve 7 will be moved downward as a whole, so that the gate valve 7 is immersed in the bottom of the inner cavity of the water tank 1, at this time, whether bubbles are generated on the water surface in the water tank 1 is observed again, if bubbles are generated, it represents that the overall sealing is not tight, if no bubbles are generated, it represents that the gate valve 7 is qualified as a whole.

[0050] It should be noted that, in this text, relational terms such as first and second are used merely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between or among the entities or actions. Also, the terms "comprises", "comprising", or any other variations thereof, are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0051] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A gate valve sealing test device, characterized by: The invention comprises a water tank (1); a lifting hydraulic rod (2) is fixedly connected to the bottom surface of the inner cavity of the water tank (1); an output end of the lifting hydraulic rod (2) is fixedly connected to a workbench (3); an auxiliary detection component (4) is installed at one end of the top surface of the workbench (3); a dovetail groove (5) is provided at the other end of the top surface of the workbench (3); an inflation detection component (6) is installed at the other end of the top surface of the workbench (3); the inflation detection component (6) is located in the dovetail groove (5) and slides; a gate valve (7) is installed between the auxiliary detection component (4) and the inflation detection component (6); The inflation detection assembly (6) comprises a long rod (61), the other end of the top surface of the workbench (3) is fixedly connected to the long rod (61), the upper part of one side of the long rod (61) is fixedly connected to a forward push telescopic rod (62), the output end of the forward push telescopic rod (62) is fixedly connected to a forward push block (63), the bottom surface of the forward push block (63) is located in the dovetail groove (5) and slides, the middle part of the forward push block (63) is installed with an inflation detection component (64), and the upper part of one side of the forward push block (63) is installed with a clamping component (65).

2. A gate valve sealing test device according to claim 1, characterized in that: The inflation detection component (64) includes a first air cylinder (641), the interior of the forward push block (63) is fixedly connected to the first air cylinder (641), one end of the first air cylinder (641) is fixedly connected to an inflation hose (642), the other end of the first air cylinder (641) is fixedly connected to a first sealing ring (643), and the other end of the first air cylinder (641) and located on the surface of the first sealing ring (643) is fixedly connected to a first rubber ring (644).

3. A gate valve sealing test device according to claim 2, characterized in that: The clamping component (65) includes a tensioning hydraulic rod (651), and the two ends of the upper part of one side of the forward pushing block (63) are respectively fixedly connected with the tensioning hydraulic rod (651), the output end of the tensioning hydraulic rod (651) is fixedly connected with a two-way track (652), and the two ends of the inner cavity of the two-way track (652) are respectively slidably connected with an arc-shaped clamping plate (653), the middle part of one side of the two-way track (652) is fixedly connected with a connecting block (654), the middle part of the connecting block (654) is fixedly connected with a two-way pneumatic rod (655), and the output end of the two-way pneumatic rod (655) is fixedly connected with the arc-shaped clamping plate (653).

4. A gate valve sealing test device according to claim 3, characterized in that: The auxiliary detection component (4) comprises a rectangular block (41), one end of the top surface of the workbench (3) is fixedly connected to the rectangular block (41), an air passage (42) is provided in the middle of the rectangular block (41), a vertical channel (43) is provided inside the rectangular block (41), the vertical channel (43) is communicated with the inner cavity of the air passage (42), a sealing component (44) is installed inside the vertical channel (43), a second sealing ring (45) is fixedly connected to one side of the rectangular block (41) and at one end of the air passage (42), a second rubber ring (46) is fixedly connected to one side of the rectangular block (41) and at the surface of the second sealing ring (45), and an auxiliary detection component (47) is fixedly connected to the other side of the rectangular block (41).

5. A gate valve sealing test device according to claim 4, characterized in that: The sealing component (44) includes a driving motor (441) and a rotating sleeve (442). The top surface of the rectangular block (41) is rotatably connected to the rotating sleeve (442). The top surface of the rotating sleeve (442) is fixedly connected to a threaded worm gear (443). The middle part of the threaded worm gear (443) is threadedly connected to a lifting threaded rod (444). The bottom surface of the lifting threaded rod (444) is fixedly connected to a gate plate (445). The gate plate (445) is located in the vertical channel (43) and slides. The top surface of the rectangular block (41) is fixedly connected to the driving motor (441). The output shaft end of the driving motor (441) is rotatably connected to the threaded worm gear (443) through a worm.

6. A gate valve sealing test device according to claim 5, characterized in that: The auxiliary detection component (47) includes a column (471), the other side of the rectangular block (41) is fixedly connected to the column (471), the inner cavity of the column (471) is communicated with the inner cavity of the air passage (42), a float (472) is placed inside the column (471), the top surface of the column (471) is fixedly connected to a cross (473), the bottom surface of the cross (473) is fixedly connected to a resistance damping rod (474), and the bottom surface of the resistance damping rod (474) is fixedly connected to a disc (475).

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