Air tightness testing device for Venturi valve

By designing the airtightness test device for Venturi valves, including clamping mechanism, measuring components and constant temperature mechanism, the airtightness test problem of Venturi valves is solved, and efficient and accurate valve body sealing detection is achieved, and leakage problems are avoided. , improves detection efficiency and accuracy.

CN222124666UActive Publication Date: 2024-12-06CONTROL SMART LTD
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Patent Information

Application Number
CN202420765732.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-12
Publication Date
2024-12-06
Estimated Expiration
2034-04-12

AI Technical Summary

Technical Problem

The prior art is difficult to effectively test the airtightness of the Venturi valve, resulting in possible leakage problems in places such as biosafety laboratories.

Method used

A test device for airtightness for Venturi valves is designed, including a support seat, a test cylinder, a clamping mechanism, an intake and outlet structure, a measuring assembly and a constant temperature mechanism. The intake and outlet air flow rate of Venturi valves is measured by clamping them. , ensure the valve body is sealed and reduce the impact of temperature on the test.

Benefits of technology

It realizes efficient and precise airtight testing of the Venturi valve, improves detection efficiency and accuracy, ensures the sealing of the valve body, avoids leakage problems, and improves the convenience and stability of the device.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222124666U_ABST
Patent Text Reader

Abstract

The utility model discloses an air tightness testing device for a venturi valve, and relates to the field of venturi valve air tightness testing, and the device comprises a supporting seat, a testing cylinder with two through ends is fixedly arranged on the supporting seat, a first sealing plate and a second sealing plate are detachably arranged at the two ends of the testing cylinder respectively, and a clamping mechanism is arranged in the testing cylinder. An air inlet structure is arranged on the first sealing plate, an air outlet structure is arranged on the second sealing plate, and measuring assemblies are arranged on the air inlet structure and the air outlet structure. The to-be-tested Venturi valve is horizontally and fixedly arranged in the test cylinder through the clamping mechanism, the gas inlet structure and the gas outlet structure are communicated with the two ends of the Venturi valve, gas is continuously supplied into the Venturi valve, the gas flow at the gas inlet structure and the gas flow at the gas outlet structure are measured through the measurement assembly, and the test accuracy is improved. According to a measurement result, whether the valve body is closed or not can be tested, and the device is simple and convenient in overall working process and high in detection efficiency and precision.
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Description

Technical Field

[0001] The present application relates to the field of air tightness testing of a Venturi valve, and in particular to an air tightness testing device for a Venturi valve. Background Art

[0002] The Venturi valve is a common airflow regulating valve. The Venturi valve combines a mechanical pressure-independent regulator with a high-speed airflow controller to expand airflow control to the highest level. Through aerodynamic design, the valve has silent working performance. The Venturi valve is mainly suitable for use in certain biological product production plants that require negative pressure control, toxic and harmful, chemical laboratories, and biosafety laboratories (such as P3-level biological laboratories).

[0003] Since the Venturi valve will be used in the ventilation system of the biosafety laboratory, the air tightness of the valve body must be ensured and leakage is not allowed to occur.

[0004] For this reason, after the valve body of the Venturi valve is produced, it needs to be tested for air tightness. Utility Model Content

[0005] In order to perform an air tightness test on the valve body of the Venturi valve after it is produced and to avoid leakage of the Venturi valve during use, the present application provides an air tightness testing device for a Venturi valve.

[0006] The present application provides a Venturi valve air tightness test device, which adopts the following technical solution:

[0007] A venturi valve air tightness test device comprises a support seat, a test cylinder with two ends passing through is fixedly arranged on the support seat, a first sealing plate and a second sealing plate are detachably arranged at both ends of the test cylinder, a clamping mechanism is arranged in the test cylinder, and the clamping mechanism is used to fix the venturi valve in the test cylinder;

[0008] The first sealing plate is provided with an air inlet structure, and the second sealing plate is provided with an air outlet structure, the air inlet structure is used to supply air to the Venturi valve in the test cylinder, and the air outlet structure is used to recover the gas discharged from the Venturi valve;

[0009] The air inlet structure and the air outlet structure are both provided with measuring components, and the measuring components are used to measure the gas flow at the air inlet structure and the air outlet structure respectively.

[0010] By adopting the above technical solution, the Venturi valve to be tested is fixed horizontally inside the test cylinder through a clamping mechanism, the air inlet structure and the air outlet structure are connected to the two ends of the Venturi valve respectively, and the air is continuously supplied to the Venturi valve. The gas flow at the air inlet structure and the air outlet structure is measured respectively by the measuring component, and then according to the measurement results, it can be tested whether the valve body is airtight. The overall work flow of the device is simple, and the detection efficiency and accuracy are high.

[0011] Preferably, the air intake structure includes a fan fixedly arranged on a side of the test cylinder close to the first sealing plate, and an air intake pipe horizontally penetrating the first sealing plate;

[0012] One end of the air inlet pipe is connected to the air outlet of the fan, and the other end of the air inlet pipe is located inside the test cylinder.

[0013] By adopting the above technical solution, the fan supplies air to the Venturi valve via the air inlet pipe, thereby achieving continuous gas supply to the Venturi valve.

[0014] Preferably, the air outlet structure comprises an air outlet pipe horizontally penetrating the second sealing plate, one end of the air outlet pipe is located outside the test cylinder, and the other end of the air outlet pipe is located inside the test cylinder.

[0015] By adopting the above technical solution, the gas outlet pipe receives the gas discharged from the Venturi valve, which makes it easy to measure the gas flow rate out of the Venturi valve.

[0016] Preferably, the measuring component comprises a first gas flow meter and a second gas flow meter which are respectively arranged on the air inlet structure and the air outlet structure.

[0017] By adopting the above technical solution, the first gas flow meter and the second gas flow meter are used to detect and compare the inlet flow rate and the outlet flow rate respectively, so as to conveniently judge whether the valve body is airtight.

[0018] Preferably, the clamping mechanism comprises an upper clamping assembly and a lower clamping assembly, and the upper clamping assembly and the lower clamping assembly are used to clamp the Venturi valve located in the test cylinder and align the two ends of the Venturi valve with the air inlet structure and the air outlet structure respectively.

[0019] By adopting the above technical solution, the upper clamping assembly and the lower clamping assembly clamp and fix the test cylinder, effectively improving the stability of the Venturi valve in the test cylinder.

[0020] Preferably, the upper clamping assembly comprises a first electric push rod fixedly and vertically arranged on the upper part of the inner wall of the test cylinder, and the output end of the first electric push rod is arranged vertically downward and fixedly provided with a first arc-shaped clamping plate;

[0021] The lower clamping assembly comprises a second electric push rod fixedly and vertically arranged at the bottom of the inner part of the test cylinder, and the output end of the second electric push rod is vertically arranged upward and fixedly provided with a second arc-shaped clamping plate.

[0022] By adopting the above technical solution, the positions of the first arc-shaped clamping plate and the second arc-shaped clamping plate are adjusted respectively using the first electric push rod and the second electric push rod, thereby effectively realizing the adjustment and fixation of the position of the Venturi valve in the test cylinder, thereby improving the overall convenience of the device.

[0023] Preferably, a pressure sensor is provided inside the test cylinder.

[0024] By adopting the above technical solution, the pressure in the test cylinder is detected in real time to ensure that the test cylinder is always closed during the test, further improving the overall stability of the device.

[0025] Preferably, a constant temperature mechanism is provided on the test cylinder, and the constant temperature mechanism is used to keep the temperature inside the test cylinder constant.

[0026] By adopting the above technical solution and using a constant temperature mechanism, the influence of the surrounding environment and air flow temperature on the test is reduced, thereby further improving the accuracy of the overall testing process of the device.

[0027] Preferably, the constant temperature mechanism comprises a shell sleeved on the outer surface of the test cylinder and a temperature control component fixedly arranged between the shell and the test cylinder.

[0028] By adopting the above technical solution, the temperature control component and the test cylinder are isolated by the shell, which further reduces the influence of the ambient temperature on the test results and improves the accuracy of the test results.

[0029] Preferably, the temperature control component comprises a heat exchange coil sleeved on the outer surface of the test cylinder, and constant temperature water is continuously passed into the coil.

[0030] By adopting the above technical solution, constant temperature water is continuously passed into the heat exchange coil, so that the heat exchange coil is always at a constant temperature, thereby improving the stability of the device during use.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] 1. The venturi valve to be tested is fixed horizontally inside the test cylinder through a clamping mechanism, the air inlet structure and the air outlet structure are connected to the two ends of the venturi valve respectively, and the air is continuously supplied to the venturi valve. The gas flow at the air inlet structure and the air outlet structure is measured by the measuring component respectively, and then according to the measurement results, whether the valve body is closed can be tested. The overall working process of the device is simple, and the detection efficiency and accuracy are high;

[0033] 2. With the help of the first electric push rod and the second electric push rod, the positions of the first arc-shaped clamping plate and the second arc-shaped clamping plate are adjusted respectively, thereby effectively adjusting and fixing the position of the Venturi valve in the test cylinder, and improving the overall convenience of the device;

[0034] 3. Comprehensively utilize the constant temperature mechanism to reduce the impact of the surrounding environment and air flow temperature on the test, and further improve the accuracy of the overall test process of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is an axonometric schematic diagram of the overall structure of the air tightness test device for a Venturi valve, which is mainly reflected in this embodiment;

[0036] Figure 2 This is a longitudinal cross-sectional view of the air tightness testing device for a Venturi valve, which is mainly embodied in this embodiment.

[0037] Figure numerals: 1. support base; 2. test cylinder; 3. first sealing plate; 31. fan; 32. air inlet pipe; 33. first gas flow meter; 4. second sealing plate; 41. air outlet pipe; 42. second gas flow meter; 5. clamping mechanism; 51. first electric push rod; 52. first arc-shaped clamping plate; 53. second electric push rod; 54. second arc-shaped clamping plate; 6. pressure sensor; 7. constant temperature mechanism; 71. shell; 72. heat exchange coil. DETAILED DESCRIPTION

[0038] The present application is further described in detail below in conjunction with the accompanying drawings.

[0039] The embodiment of the present application discloses an air tightness testing device for a Venturi valve.

[0040] Reference Figure 1 and Figure 2 The air tightness test device for the venturi valve comprises a support seat 1, on which a test cylinder 2 with two ends passing through is fixedly arranged, and at both ends of the test cylinder 2, a first sealing plate 3 and a second sealing plate 4 are detachably arranged, respectively, and a clamping mechanism 5 is arranged in the test cylinder 2, and the clamping mechanism 5 is used to fix the venturi valve in the test cylinder 2;

[0041] An air inlet structure is provided on the first sealing plate 3, and an air outlet structure is provided on the second sealing plate 4. The air inlet structure is used to supply air to the Venturi valve in the test cylinder 2, and the air outlet structure is used to recover the gas discharged from the Venturi valve;

[0042] The air inlet structure and the air outlet structure are both provided with measuring components, which are used to measure the gas flow at the air inlet structure and the air outlet structure respectively;

[0043] The test cylinder 2 is provided with a constant temperature mechanism 7 , which is used to keep the temperature inside the test cylinder 2 constant.

[0044] Reference Figure 1 and Figure 2 The air intake structure includes a fan 31 fixedly arranged on one side of the test cylinder 2 close to the first sealing plate 3, and an air intake pipe 32 horizontally penetrating the first sealing plate 3, one end of the air intake pipe 32 is connected to the air outlet of the fan 31, and the other end of the air intake pipe 32 is located inside the test cylinder 2;

[0045] The air outlet structure includes an air outlet pipe 41 horizontally penetrating the second sealing plate 4 , one end of the air outlet pipe 41 is located outside the test cylinder 2 , and the other end of the air outlet pipe 41 is located inside the test cylinder 2 .

[0046] Specifically, a connecting ring, a sealing ring and a connecting bolt are provided on the side of the first sealing plate 3 and the second sealing plate 4 close to the Venturi valve. The connecting ring and the sealing ring are fixedly and sealedly connected to the air inlet end or the air outlet end of the Venturi valve through the connecting bolts, and then sealed and connected to the air inlet pipe 32 or the air outlet pipe 41.

[0047] Reference Figure 1 and Figure 2 The measuring component includes a first gas flow meter 33 and a second gas flow meter 42 respectively arranged on the air inlet structure and the air outlet structure. During the test, by respectively counting the values ​​of the first gas flow meter 33 and the second gas flow meter 42 and subtracting the values ​​to obtain the difference in gas flow, it is possible to intuitively know whether the valve body to be measured has gas leakage.

[0048] Reference Figure 1 and Figure 2 The clamping mechanism 5 includes an upper clamping assembly and a lower clamping assembly, which are used to clamp the Venturi valve located in the test cylinder 2 and align the two ends of the Venturi valve with the inlet pipe 32 and the outlet pipe 41 respectively.

[0049] The upper clamping assembly includes a first electric push rod 51 fixedly arranged vertically on the upper inner wall of the test cylinder 2, and the output end of the first electric push rod 51 is arranged vertically downward and fixedly provided with a first arc-shaped clamping plate 52. The lower clamping assembly includes a second electric push rod 53 fixedly arranged vertically on the bottom of the inner part of the test cylinder 2, and the output end of the second electric push rod 53 is arranged vertically upward and fixedly provided with a second arc-shaped clamping plate 54. The centers of the first electric push rod 51 and the second electric push rod 53 are both located directly above and directly below the axis of the test cylinder 2.

[0050] The first electric push rod 51 and the second electric push rod 53 are used to adjust the positions of the first arc-shaped clamping plate 52 and the second arc-shaped clamping plate 54 respectively, thereby effectively achieving the adjustment and fixation of the position of the Venturi valve in the test cylinder 2.

[0051] Reference Figure 1 and Figure 2 The constant temperature mechanism 7 includes a shell 71 sleeved on the outer surface of the test cylinder 2 and a temperature control component fixedly arranged between the shell 71 and the test cylinder 2. The temperature control component includes a heat exchange coil 72 sleeved on the outer surface of the test cylinder 2, and constant temperature water is continuously passed into the coil. Constant temperature water is continuously passed into the heat exchange coil 72, so that the heat exchange coil 72 is always at a constant temperature, reducing the influence of the surrounding environment and air flow temperature on the test.

[0052] In this embodiment, a high-precision pressure sensor 6 can also be provided in the test cylinder 2, so as to detect the pressure in the test cylinder 2 in real time, ensuring that the test cylinder 2 is always sealed during the test process, and further improving the overall stability of the device.

[0053] The implementation principle of the air tightness test device for a Venturi valve in the embodiment of the present application is as follows: the first sealing plate 3 and the second sealing plate 4 are disassembled, the Venturi valve to be tested is placed on the second arc-shaped clamping plate 54, and the first arc-shaped clamping plate 52 is controlled to cooperate and clamp the Venturi valve, and the first electric push rod 51 and the second electric push rod 53 are adjusted so that the axis of the Venturi valve to be tested coincides with the axis of the test cylinder 2;

[0054] The air inlet and outlet ends of the Venturi valve are connected and fixed to the air inlet pipe 32 and the air outlet pipe 41 respectively, and air is continuously introduced into the Venturi valve through the fan 31. At the same time, the values ​​of the first gas flow meter 33 and the second gas flow meter 42 are counted respectively, and the difference between the two is obtained to obtain the difference in air flow, so that it can be intuitively known whether there is gas leakage in the valve body to be measured;

[0055] During the test, constant temperature water is continuously passed into the heat exchange coil 72 to keep the heat exchange coil 72 at a constant temperature.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A Venturi valve air tightness test device, characterized in that: The invention comprises a support seat (1), a test cylinder (2) with two ends passing through is fixedly arranged on the support seat (1), a first sealing plate (3) and a second sealing plate (4) are detachably arranged at the two ends of the test cylinder (2), a clamping mechanism (5) is arranged inside the test cylinder (2), and the clamping mechanism (5) is used to fix the venturi valve in the test cylinder (2); An air inlet structure is provided on the first sealing plate (3), and an air outlet structure is provided on the second sealing plate (4), the air inlet structure is used to supply air to the venturi valve in the test cylinder (2), and the air outlet structure is used to recover the gas discharged from the venturi valve; The air inlet structure and the air outlet structure are both provided with measuring components, and the measuring components are used to measure the gas flow at the air inlet structure and the air outlet structure respectively.

2. The air tightness test device for a Venturi valve according to claim 1, characterized in that: The air intake structure comprises a fan (31) fixedly arranged on a side of the test cylinder (2) close to the first sealing plate (3), and an air intake pipe (32) horizontally penetrating the first sealing plate (3); One end of the air inlet pipe (32) is connected to the air outlet of the fan (31), and the other end of the air inlet pipe (32) is located inside the test cylinder (2).

3. The air tightness testing device for a Venturi valve according to claim 1, characterized in that: The air outlet structure comprises an air outlet pipe (41) which is horizontally penetrated on the second sealing plate (4), one end of the air outlet pipe (41) is located outside the test cylinder (2), and the other end of the air outlet pipe (41) is located inside the test cylinder (2).

4. The air tightness testing device for a Venturi valve according to claim 1, characterized in that: The measuring component comprises a first gas flow meter (33) and a second gas flow meter (42) which are respectively arranged on the air inlet structure and the air outlet structure.

5. The air tightness testing device for a Venturi valve according to claim 1, characterized in that: The clamping mechanism (5) comprises an upper clamping assembly and a lower clamping assembly, and the upper clamping assembly and the lower clamping assembly are used to clamp the Venturi valve located in the test cylinder (2) and align the two ends of the Venturi valve with the air inlet structure and the air outlet structure respectively.

6. The air tightness test device for a Venturi valve according to claim 5, characterized in that: The upper clamping assembly comprises a first electric push rod (51) fixedly arranged vertically on the upper part of the inner wall of the test cylinder (2), the output end of the first electric push rod (51) being arranged vertically downward and fixedly provided with a first arc-shaped clamping plate (52); The lower clamping assembly comprises a second electric push rod (53) fixedly arranged vertically at the bottom of the inner part of the test cylinder (2), and the output end of the second electric push rod (53) is arranged vertically upward and fixedly provided with a second arc-shaped clamping plate (54).

7. A Venturi valve air tightness test device according to any one of claims 1 to 6, characterized in that: A pressure sensor (6) is arranged inside the test cylinder (2).

8. A Venturi valve air tightness test device according to any one of claims 1 to 6, characterized in that: The test cylinder (2) is provided with a constant temperature mechanism (7), and the constant temperature mechanism (7) is used to maintain a constant temperature in the test cylinder (2).

9. The air tightness testing device for a Venturi valve according to claim 8, characterized in that: The constant temperature mechanism (7) comprises a shell (71) sleeved on the outer surface of the test cylinder (2) and a temperature control component fixedly arranged between the shell (71) and the test cylinder (2).

10. The air tightness testing device for a Venturi valve according to claim 9, characterized in that: The temperature control component comprises a heat exchange coil (72) sleeved on the outer surface of the test cylinder (2), and constant temperature water is continuously passed into the coil.