Butterfly valve testing equipment

Abstract

The utility model belongs to the field of valve testing, and relates to butterfly valve testing equipment, which is characterized in that an air tightness testing switching block is arranged below a valve testing seat, a testing support column is arranged on a disc at the top end of the valve testing seat, an adjusting screw is arranged on the outer circumferential surface of the valve testing seat, and a locking block is arranged on the outer circumferential surface of the valve testing seat through the adjusting screw; a rotating shaft locking hole is formed in the locking block, the rotating shaft locking hole is matched with a butterfly valve rotating shaft, a lower spring supporting column is fixed to the upper surface of the valve testing seat, a spring is arranged on the lower spring supporting column, and an upper spring supporting column is arranged above the spring; an airtight connector is arranged in the airtight test switching block, and the airtight connector is communicated with a vent hole in the airtight test switching block; two oil channels are arranged in the valve testing seat, one ends of the two oil channels are communicated with two oil through holes in a disc at the top end of the valve testing seat in a one-to-one correspondence mode, and the other ends of the two oil channels are communicated with the air vent of the airtight testing switching block.

Description

Technical Field

[0001] The utility model relates to the field of valve testing, in particular to a butterfly valve testing device. Background Art

[0002] As the core control element in the fluid system, valves can be used to control key performance parameters such as the direction, pressure, flow rate, and flow rate of the fluid. Therefore, they are indispensable equipment components in the fields of high-end hydraulics, chemical production, and mechanical equipment. At present, valve equipment has high performance requirements, good compactness, high reliability, and good sealing. The development level and performance of valve equipment will directly affect the development of high-end system-level equipment and the development of the overall industrial level, and are related to the social science and technology level and the speed of economic benefits.

[0003] In recent years, our valve equipment field has also developed rapidly. Among the many types of valve equipment components, butterfly valves, as a special valve with dual functions of shutoff and flow pressure regulation, have been developed and applied for many years, forming butterfly valves of different types of structures. In the field of high-end performance requirements, triple-eccentric butterfly valves have been able to meet the extreme performance requirements of some high-end industries, and have been widely used and developed in the field, becoming one of the necessary components of valve components of some special equipment in high-end industries.

[0004] The butterfly valve has the following advantages: small opening and closing torque, low energy consumption, excellent opening and closing response characteristics, good reliability, and can be repeatedly opened and closed for a long time; compact structure, low installation requirements such as volume and weight, suitable for various equipment; at the same time, because the valve plate switch rotation motion is sealed, it can be used to transport substances with suspended particles in gas and liquid media, such as mortar, liquid concrete, etc.

[0005] In the development and production process of butterfly valve equipment, it is necessary to assess the sealing performance of butterfly valves under different working conditions and critical opening positions, and to conduct sealing tests of different working conditions and media at the critical opening position of butterfly valves. However, the current test equipment has a relatively single function and cannot simultaneously meet the test requirements of multiple models, multiple working conditions, multiple media, and different critical opening position adjustments. Utility Model Content

[0006] Purpose of the utility model: In view of the problems existing in the prior art, the purpose of the utility model is to provide a butterfly valve testing equipment to solve the problem that the above-mentioned testing equipment has a relatively single function and cannot simultaneously meet the test requirements of multiple models, multiple working conditions, multiple media and different critical opening position adjustments.

[0007] Technical Solution

[0008] A butterfly valve testing device, comprising an airtight test adapter block 1, a valve test seat 2, a test support 3, a lower spring support 4, an upper spring support 6, a spring 5, an adjusting screw 7, and a locking block 8; the airtight test adapter block 1 is installed below the valve test seat 2, the test support 3 is arranged on the top disk of the valve test seat 2, the adjusting screw 7 is installed on the outer circumference of the valve test seat 2, the locking block 8 is installed on the outer circumference of the valve test seat 2 through the adjusting screw 7, the locking block 8 is provided with a rotating shaft locking hole 82, the rotating shaft locking hole 82 cooperates with the rotating shaft of the butterfly valve, the lower spring support 4 is fixed on the upper surface of the valve test seat 2, the spring 5 is arranged on the lower spring support 4, and the upper spring support 6 is arranged above the spring 5;

[0009] An airtight adapter 11 is provided inside the airtight test adapter block 1, and the airtight adapter 11 is communicated with a vent hole 12 inside the airtight test adapter block 1;

[0010] The valve test seat 2 is provided with two oil passages inside, one end of the two oil passages is connected to two oil holes 24 arranged on the top disk of the valve test seat 2 respectively, and the other end of the two oil passages is connected to the vent hole 12 of the airtight test adapter block 1.

[0011] Furthermore, the locking block 8 is fixed on the outer circumferential side plane 23 of the valve test seat 2 by means of an adjusting screw 7 .

[0012] Furthermore, the lower spring support 4 and the test support 3 are fixed on the valve test seat 2 , the spring 5 is correspondingly installed on the lower spring support 4 , and the upper spring support 6 is installed above the spring 5 .

[0013] Furthermore, a group of stepped threaded holes 21 are evenly arranged along the circumferential direction on the upper surface of the outer circle of the top of the valve test seat 2. The stepped threaded holes 21 are arranged on the circumference of the outer circle of the top of the valve test seat 2 with a diameter of 245 mm. The number of stepped threaded holes 21 is 8, and the upper part of the stepped threaded holes 21 is M8 thread, and the lower part is M7 thread.

[0014] Furthermore, the upper surface of the inner circle of the top disk of the valve test seat 2 is processed with two symmetrically arranged lower spring support threaded mounting holes 22, which are used to install the test support 3 and the lower spring support 4 respectively. The two lower spring support threaded mounting holes 22 are 2450mm away from the inner circle oil hole. The lower surface of the top disk of the valve test seat 2 has two sealing grooves 1 25, two sealing grooves 26, and four valve test seat mounting holes 27. The two oil holes 24 are respectively arranged in the two sealing grooves 1 25.

[0015] Furthermore, the height of the spring 5 is 20 mm, 25 mm or 30 mm.

[0016] Furthermore, an angle-controlling waist-shaped hole 81 is provided on the locking block 8 , and the position of the locking block 8 and the rotation angle of the rotating shaft are adjusted through the angle-controlling waist-shaped hole 81 .

[0017] Technical effects:

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1) The sealing test can be carried out under both gaseous and liquid media; the valve test seat is provided with stepped threaded holes, which can be connected with various types of butterfly valves with different installation interfaces for testing;

[0020] 2) The spring is processed according to the height of 20mm, 25mm and 30mm, so as to change the compression of the spring and simulate the test conditions of different products under different pressures;

[0021] 3) By adjusting the angle and position of the locking block, the sealing performance of the butterfly valve core plate at different subtle angles when the butterfly valve is in a critical state can be tested, and its zero position can be further adjusted to ensure the opening response speed of the butterfly valve.

[0022] 4) The utility model has a simple structure, is easy to disassemble and install, has strong adaptability, low cost and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is a cross-sectional view of the valve test seat and the airtight test adapter block of the utility model.

[0025] Figure 3 This is a top view of the valve test seat of the utility model.

[0026] Figure 4 This is a bottom view of the valve test seat of the utility model.

[0027] Figure 5 This is a schematic diagram of the installation of a butterfly valve of the present utility model.

[0028] Figure 6 It is a schematic diagram of the locking block of the utility model.

[0029] In the figure: 1. Airtight test adapter block, 2. Valve test seat, 3. Test support, 4. Lower spring support, 5. Spring, 6. Upper spring support, 7. Adjusting screw, 8. Locking block, 9. Airtight adapter, 11. Airtight adapter, 12. Vent hole, 21. Step threaded hole, 22. Lower spring support threaded mounting hole, 23. Outer circle side plane of valve test seat, 24. Oil hole, 25. Sealing groove 1, 26. Sealing groove 2, 27. Valve test seat mounting hole, 81. Angle control waist-shaped hole, 82. Rotating shaft locking hole, 100. Rotating shaft. DETAILED DESCRIPTION

[0030] The following embodiments are provided in conjunction with the accompanying drawings

[0031] like Figure 1 As shown, the utility model provides a butterfly valve testing device, including an airtight test adapter block 1, a valve test seat 2, a test support 3, a lower spring support 4, a spring 5, an upper spring support 6, an adjusting screw 7, and a locking block 8. Figure 2 As shown, during the actual test process, one side of the airtight adapter 11 is connected to the gaseous medium pump station to provide gaseous medium and air pressure for the test equipment, and the vent 12 is connected to the valve test seat 2. When the actual working medium is liquid, the airtight test adapter block 1 can be removed to directly connect the lower bottom surface of the valve test seat 2 to the hydraulic test bench.

[0032] like Figure 3 and Figure 4 As shown, the stepped threaded holes 21 are evenly arranged along the circumferential direction on the upper surface of the outer circle of the top of the valve test seat 2 and are arranged on a circumference of a diameter of 245 mm. The number of stepped threaded holes is 8. The upper part of the stepped threaded hole 21 is an M8 thread, and the lower part is an M7 thread. The valve test seat adopts the form of stepped threaded holes and can be used for testing multiple types of butterfly valves; because the standard hydraulic test bench has four oil holes: an oil inlet, an oil return port and two control oil ports, the lower surface of the valve test seat 2 has two oil holes 24, two sealing grooves 1 25 and two sealing grooves 26. The two oil holes 24 of the valve test seat 2 are directly connected to the oil inlet and the oil return port of the hydraulic test bench respectively, and the two sealing grooves 1 25 of the valve test seat 2 are directly connected to the two load ports of the hydraulic test bench respectively. The four valve test seat mounting holes 27 are used to connect the valve test seat 2 with the hydraulic test bench.

[0033] A lower spring support threaded mounting hole 22 is processed on the inner circle upper surface of the top disk of the valve test seat 2, and is arranged 50mm symmetrically from the inner circle oil hole 24 on the upper surface of the valve test seat 2. During the product testing process, due to the pre-compression of the spring 5, pressure can be generated on the upper surface of the butterfly valve, thereby simulating the product's operating conditions.

[0034] like Figure 5 and Figure 6 As shown, during the test, it is often necessary to examine the sealing performance of the butterfly valve plate near the zero position when the butterfly valve is in a critical state. To achieve this purpose, the adjusting screw 7 is installed below the locking block 8 and is installed on the side of the valve test seat 2. The upper shaft locking hole 82 of the locking block 8 cooperates with the butterfly valve shaft 100. The position of the locking block 8 and the rotation angle of the shaft are adjusted by the angle control waist-shaped hole 81, and the angle of the shaft 100 is adjusted at the initial position to examine the sealing performance of the butterfly valve near the zero position.

[0035] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.

Claims

1. A butterfly valve testing device, characterized in that: It comprises an airtight test adapter block (1), a valve test seat (2), a test support (3), a lower spring support (4), a spring (5), an upper spring support (6), an adjusting screw (7), and a locking block (8); the airtight test adapter block (1) is installed below the valve test seat (2); the test support (3) is arranged on the top disk of the valve test seat (2); the adjusting screw (7) is installed on the outer circumference of the valve test seat (2); the locking block (8) is installed on the outer circumference of the valve test seat (2) through the adjusting screw (7); a rotating shaft locking hole (82) is arranged on the locking block (8); the rotating shaft locking hole (82) cooperates with the rotating shaft of the butterfly valve; the lower spring support (4) is fixed on the upper surface of the valve test seat (2); a spring (5) is arranged on the lower spring support (4); and an upper spring support (6) is arranged above the spring (5); An airtight adapter (11) is arranged inside the airtight test adapter block (1), and the airtight adapter (11) is connected to a vent hole (12) inside the airtight test adapter block (1); The valve test seat (2) is provided with two oil passages inside, one end of the two oil passages is connected to two oil holes (24) provided on the top disk of the valve test seat (2) in a one-to-one correspondence, and the other end of the two oil passages is connected to the air vent (12) of the airtight test adapter block (1).

2. A butterfly valve testing device according to claim 1, characterized in that: The locking block (8) is fixed on the outer circumferential side plane (23) of the valve test seat (2) via an adjusting screw (7).

3. A butterfly valve testing device according to claim 1, characterized in that: The lower spring support (4) and the test support (3) are fixed on the valve test seat (2), the spring (5) is correspondingly installed on the lower spring support (4), and the upper spring support (6) is installed above the spring (5).

4. A butterfly valve testing device according to claim 1, characterized in that: A group of stepped threaded holes (21) are evenly arranged along the circumferential direction on the upper surface of the outer circle of the top end of the valve test seat (2). The stepped threaded holes (21) are arranged on the circumference of the outer circle of the top end of the valve test seat (2) with a diameter of 245 mm. The number of stepped threaded holes (21) is 8. The upper part of the stepped threaded holes (21) is an M8 thread, and the lower part is an M7 thread.

5. The butterfly valve testing device according to claim 1, characterized in that: The upper surface of the inner circle of the top disk of the valve test seat (2) is processed with two symmetrically arranged lower spring support threaded mounting holes (22), which are used to install the test support (3) and the lower spring support (4), respectively. The two lower spring support threaded mounting holes (22) are 50 mm away from the inner circle oil hole (24). The lower surface of the top disk of the valve test seat (2) is processed with two sealing grooves 1 (25), two sealing grooves 2 (26), and four valve test seat mounting holes (27). The two oil holes (24) are respectively arranged in the two sealing grooves 1 (25).

6. A butterfly valve testing device according to claim 1, characterized in that: The height of the spring (5) is 20mm, 25mm or 30mm.

7. The butterfly valve testing device according to claim 1, characterized in that: The locking block (8) is provided with an angle-controlling waist-shaped hole (81), and the position of the locking block (8) and the rotation angle of the rotating shaft are adjusted through the angle-controlling waist-shaped hole (81).

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