Butterfly valve pressing tool

Abstract

The utility model discloses a butterfly valve press tool, including upper clamping plate, the clamping plate bottom is equipped with two first guide holes, and two first guide holes are arranged respectively in the corner of two diagonal arrangement of upper clamping plate, lower clamping plate is set up in the upper clamping plate bottom, and the lower clamping plate top two corner places are equipped with two with the first guide hole one -to -one corresponding second guide hole, guide column is provided with two, and two guide column top end is arranged respectively in two first guide hole inside, and the bottom end is extended to two second guide hole inside respectively. The utility model discloses a guide column is completed with upper clamping plate, butterfly valve, lower clamping plate's concatenation, so that butterfly valve can be held tightly by upper clamping plate and lower clamping plate, and the centering installation of butterfly valve can be completed without using bolt, and the installation efficiency is high, simple and easy operation, and the installation efficiency is high, further, through setting up the pressurization subassembly of integration with lower clamping plate, makes pressure test process relative integration, need not to disassemble or adjust in the middle, and test efficiency improves greatly.

Description

Technical Field

[0001] This utility model specifically relates to a butterfly valve pressure testing fixture. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple and frequently used fluid control valve. It can be used for the on / off control of low-pressure pipeline media. Its opening and closing element is a disc-shaped butterfly plate that rotates around its own axis within the valve body to achieve the purpose of opening, closing, or regulation. Its sealing performance is a key indicator for measuring valve quality. Therefore, before butterfly valves leave the factory, they need to undergo pressure testing (pressure test) to verify whether their sealing performance under pressure meets the standards. However, existing butterfly valve pressure testing fixtures are usually quite complex in structure. During installation, butterfly valves need to be aligned multiple times, and multiple bolts are required for tightening, making the operation cumbersome and the installation efficiency low. Furthermore, during the testing process, because the test components are relatively scattered, the position of the butterfly valve often needs to be disassembled or adjusted, resulting in low testing efficiency for butterfly valves.

[0003] Therefore, it is necessary to invent a butterfly valve pressure testing tool to solve the above problems. Utility Model Content

[0004] (a) Purpose of the utility model To address the technical problems existing in the background art, this utility model proposes a butterfly valve pressure testing fixture. A guide column connects the upper clamping plate, butterfly valve, and lower clamping plate, allowing the butterfly valve to be tightly clamped by the upper and lower clamping plates. This eliminates the need for bolts, enabling centering and installation of the butterfly valve. It is simple to operate and has high installation efficiency. Furthermore, by incorporating a pressure-pressurizing component integrated with the lower clamping plate, the pressure testing process is relatively integrated, eliminating the need for disassembly or adjustment during testing and significantly improving efficiency.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a butterfly valve pressure testing fixture, including an upper clamping plate, wherein two first guide holes are provided at the bottom of the clamping plate, and the two first guide holes are respectively located at two diagonally arranged corners of the upper clamping plate; A lower clamping plate is disposed at the bottom of the upper clamping plate, and two second guide holes corresponding one-to-one with the first guide holes are provided at the two corners of the top of the lower clamping plate; Two guide posts are provided, with the top ends of the two guide posts respectively set inside the two first guide holes and the bottom ends respectively extending into the two second guide holes; The pressurization assembly, connected to the lower clamping plate, is used to test the sealing performance of the butterfly valve body located between the upper and lower clamping plates.

[0006] Preferably, the upper clamping plate has a first positioning hole at the bottom center and an observation port at the top of the upper clamping plate that communicates with the positioning hole.

[0007] Preferably, the bottom of the upper clamping plate is provided with a first receiving groove on the outer ring of the first positioning hole, and the first receiving groove is configured as an annular shape.

[0008] Preferably, a second positioning hole is provided at the top center of the lower clamping plate, and a flow channel is provided inside the lower clamping plate. The flow channel is T-shaped, and the junction of the transverse channel and the longitudinal channel of the flow channel is connected to the second positioning hole.

[0009] Preferably, the top of the lower clamping plate is provided with a second receiving groove on the outer ring of the second positioning hole, and the second receiving groove is configured as an annular groove.

[0010] Preferably, the pressurization assembly includes a pressure gauge installed at one side opening of the flow channel, a water inlet valve installed at the other side opening of the flow channel, and a pressure valve installed at the front opening of the flow channel.

[0011] Compared with the prior art, the beneficial effects of the above-mentioned technical solution of this utility model are: 1. This utility model uses a guide post to connect the upper clamping plate, butterfly valve, and lower clamping plate, allowing the butterfly valve to be tightly clamped by the upper and lower clamping plates. The butterfly valve can be installed without the need for bolts. The guide post enables quick and accurate centering and clamping. The structure is simple and easy to operate, and the installation efficiency of the butterfly valve is significantly improved. At the same time, the setting of the first and second receiving grooves allows a sealing ring to be filled between each pair of the upper clamping plate, butterfly valve, and lower clamping plate when they are connected in series, ensuring the reliability of the seal during testing. 2. This utility model integrates a pressurizing component with the lower clamping plate. Specifically, the water inlet valve is connected to a water pump to inject water into the flow channel of the lower clamping plate and expel air. The pressure valve pressurizes the butterfly valve to a preset value through a pressure pump. The pressure gauge observes whether the pressure is stable. This makes the pressure testing process relatively integrated, without the need for disassembly or adjustment in the middle, and greatly improves the testing efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a demonstration diagram showing the use of this utility model; Figure 3 This is a half-sectional view when the present invention is in use; Figure 4 This is a schematic diagram of the upper clamping plate of this utility model; Figure 5 This is a distribution diagram of the pressurization components of this utility model; Figure 6This is an exploded view of the present invention in use; Figure 7 This is an exploded view of the present invention from another perspective.

[0013] Explanation of reference numerals in the attached figures: 1 Upper clamping plate, 2 First guide hole, 3 Lower clamping plate, 4 Second guide hole, 5 Guide column, 6 Pressurization assembly, 61 Pressure gauge, 62 Inlet valve, 63 Pressure valve; 7 First positioning hole, 8 Observation port, 9 First receiving groove, 10 Second positioning hole, 11 Flow channel, 12 Second receiving groove. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0015] This utility model provides, for example Figure 1-7 The butterfly valve pressure testing fixture shown includes an upper clamping plate 1, and two first guide holes 2 are opened at the bottom of the clamping plate. The two first guide holes 2 are respectively located at two diagonally arranged corners of the upper clamping plate 1. The lower clamping plate 3 is located at the bottom of the upper clamping plate 1. Two second guide holes 4, which correspond one-to-one with the first guide holes 2, are opened at the two corners of the top of the lower clamping plate 3. Two guide posts 5 are provided, with the top ends of the two guide posts 5 respectively located inside the two first guide holes 2 and the bottom ends respectively extending into the two second guide holes 4. The pressurizing component 6 is connected to the lower clamping plate 3 and is used to test the sealing performance of the butterfly valve body located between the upper clamping plate 1 and the lower clamping plate 3. The pressurizing component 6 includes a pressure gauge 61 installed at one side opening of the flow channel 11, a water inlet valve 62 installed at the other side opening of the flow channel 11, and a pressure valve 63 installed at the front opening of the flow channel 11.

[0016] In one embodiment, the upper clamping plate 1 has a first positioning hole 7 at the bottom center, with an inner diameter of 80mm and a depth of 20mm, which can be adapted to the top of the existing butterfly valve. The upper clamping plate 1 has an observation port 8 at the top, which is connected to the positioning hole and is a straight groove of 50mm×80mm, for workers to directly observe whether there is water leakage in the upper cavity of the butterfly valve, and the judgment result is intuitive and accurate.

[0017] In one embodiment, a second positioning hole 10 is provided at the top center of the lower clamping plate 3, and a flow channel 11 is provided inside the lower clamping plate 3. The flow channel 11 is T-shaped, and the intersection of the transverse channel and the longitudinal channel of the flow channel 11 is connected to the second positioning hole 10 to ensure the smooth use of the pressurizing component 6 and to complete the test of the butterfly valve's sealing performance.

[0018] In one embodiment, the bottom of the upper clamping plate 1 is provided with a first receiving groove 9 on the outer ring of the first positioning hole 7. The first receiving groove 9 is annular. The top of the lower clamping plate 3 is provided with a second receiving groove 12 on the outer ring of the second positioning hole 10. The second receiving groove 12 is annular. When assembling the butterfly valve with the pressure testing device, a sealing ring can be placed in the second receiving groove 12 on the top of the lower clamping plate 3 and the groove on the top of the butterfly valve, respectively. This ensures a high sealing performance when the upper clamping plate 1 and the lower clamping plate 3 clamp the butterfly valve, thus not affecting the test of the butterfly valve's sealing performance.

[0019] The specific implementation method is as follows: When using this utility model, the instruction manual is attached. Figure 2 Appendix Figure 3 Appendix Figure 6 Appendix Figure 7 In the attached figures, reference numeral 13 refers to the butterfly valve body, and both the upper clamping plate 1 and the lower clamping plate 3 are set as square blocks. The upper clamping plate 1 has a first positioning hole 7 at the bottom for initial positioning with the upper valve port of the butterfly valve, and the lower clamping plate 3 has a second positioning hole 10 at the top for initial positioning with the lower valve port of the butterfly valve. Furthermore, the pressure gauge 61, the inlet valve 62, and the pressure valve 63 are all threadedly connected to the lower clamping plate 3. At the same time, the pressure gauge 61 is set as a radial pressure gauge with a range of 0-60 bar. Specifically, during the pressure test of the butterfly valve, the operator places the external sealing ring inside the second receiving groove 12, then places the butterfly valve on top of the lower clamping plate 3, and makes the top of the sealing ring fit into the bottom groove of the butterfly valve. Then, the operator inserts the guide post 5 into the hole on the corner of the butterfly valve, and makes the bottom end of the guide post 5 pass through the hole and insert into the second guide hole 4. At this time, the top of the guide post 5 is exposed. The operator places a sealing ring in the top groove of the butterfly valve, covers the upper clamping plate 1 on top of the butterfly valve, and aligns the first guide hole 2 with the guide post 5, so that the top of the guide post 5 is inserted into the first guide hole 2. This connects the upper clamping plate 1, the butterfly valve, and the lower clamping plate 3 in series. Finally, the entire pressure testing device with the butterfly valve is placed under an external press. By pressing the upper clamping plate 1 and the lower clamping plate 3 with the press, the butterfly valve can be stably clamped between the upper clamping plate 1 and the lower clamping plate 3, completing the assembly of the butterfly valve and the pressure testing device. During the pressure test, the butterfly valve plate is placed in the closed state. Then, the inlet valve 62 is opened, and water is injected into the flow channel 11 of the lower clamp 3 by connecting the water pump to expel air. Then, the inlet valve 62 is closed, and the pressure is increased to the preset value, such as 25 bar, through the pressure valve 63 connected to the pressure pump. The pressure is maintained for a period of time, such as 30 minutes. During this period, the pressure is observed to see if the pressure is stable through the pressure gauge 61, and the upper cavity of the butterfly valve is visually checked for water leakage through the observation port 8. If the pressure is stable and there is no leakage, the sealing performance of the butterfly valve is deemed qualified. This implementation method specifically addresses the problems in the existing technology where the current butterfly valve pressure testing fixtures are usually complex in structure, require multiple alignments during installation, and require multiple bolts for tightening, resulting in cumbersome operation and low installation efficiency; furthermore, during the testing process, because the test components are relatively scattered, the butterfly valve position often needs to be disassembled or adjusted, which often leads to low testing efficiency for butterfly valves.

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used above are only some embodiments recorded in this utility model. Obviously, those skilled in the art can obtain other drawings based on these drawings.

[0021] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A butterfly valve pressure testing fixture, characterized in that, include: The upper clamping plate (1) has two first guide holes (2) at its bottom. The two first guide holes (2) are respectively located at the two corners of the upper clamping plate (1) arranged diagonally. The lower clamping plate (3) is located at the bottom of the upper clamping plate (1), and two second guide holes (4) corresponding to the first guide hole (2) are opened at the two corners of the top of the lower clamping plate (3). There are two guide posts (5), with the top ends of the two guide posts (5) respectively located inside the two first guide holes (2) and the bottom ends respectively extending into the two second guide holes (4); The pressurization assembly (6) is connected to the lower clamping plate (3) and is used to test the sealing performance of the butterfly valve body located between the upper clamping plate (1) and the lower clamping plate (3).

2. The butterfly valve pressure testing fixture according to claim 1, characterized in that: The upper clamping plate (1) has a first positioning hole (7) at the bottom center and an observation port (8) connected to the positioning hole at the top.

3. The butterfly valve pressure testing fixture according to claim 2, characterized in that: The bottom of the upper clamping plate (1) is provided with a first receiving groove (9) on the outer ring of the first positioning hole (7), and the first receiving groove (9) is set as an annular shape.

4. The butterfly valve pressure testing fixture according to claim 1, characterized in that: The lower clamping plate (3) has a second positioning hole (10) at the top center. The lower clamping plate (3) has a flow channel (11) inside. The flow channel (11) is T-shaped. The intersection of the transverse channel and the longitudinal channel of the flow channel (11) is connected to the second positioning hole (10).

5. The butterfly valve pressure testing fixture according to claim 4, characterized in that: The top of the lower clamping plate (3) is provided with a second receiving groove (12) on the outer ring of the second positioning hole (10), and the second receiving groove (12) is set as an annular shape.

6. The butterfly valve pressure testing fixture according to claim 4, characterized in that: The pressurization assembly (6) includes a pressure gauge (61) installed at one side opening of the flow channel (11), a water inlet valve (62) installed at the other side opening of the flow channel (11), and a pressure valve (63) installed at the front opening of the flow channel (11).

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