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Air tightness detection system, detection method and special fixture

An air-tightness detection and air-tightness technology, which is used in liquid/vacuum measurement for liquid tightness, manufacturing tools, workpiece clamping devices, etc., which can solve the problem of many operation actions and the overall level of gas water heater products. The development lags behind , low detection efficiency, etc.

Pending Publication Date: 2021-01-12
VATTI CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Manually move the manual gas switching valve to open and close the blocked cylinder, and manually plug the solenoid valve cable to open and close the solenoid valve. The whole process has many operations, long time, low detection efficiency and high cost.
[0005] The air tightness index is a Class A index of the gas channel, and it must be fully inspected before it can be produced. Due to the constraints of traditional design and manufacturing technology, the detection device can only be the above-mentioned low-level repetitive operation, which is in line with the overall level of gas water heater product development. It lags behind seriously, and must be greatly improved and improved

Method used

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  • Air tightness detection system, detection method and special fixture
  • Air tightness detection system, detection method and special fixture
  • Air tightness detection system, detection method and special fixture

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0037] Such as Figure 4 As shown, the present invention discloses an airtightness detection system for detecting the airtightness of a valve body, including: a detection device, a control module, an execution module and an alarm device, specifically,

[0038] The valve body 1 to be tested includes six nozzle holes: two nozzles 12 normally open in the middle, and the other two nozzles 11 and 13 controlled by solenoid valves.

[0039] In this embodiment, it is provided with two stations, and a total of two valve bodies to be tested can be tested at the same time.

[0040] In this embodiment, the execution module includes three electromagnetic-pneumatic switching valves and four blocking cylinders, namely, the first electromagnetic-pneumatic switching valve YV1, the second electromagnetic-pneumatic switching valve YV2, and the second electromagnetic-pneumatic switching valve YV3; The four blocking cylinders include the first blocking cylinder QG1, the second blocking cylinder Q...

Embodiment 2

[0049] The present invention also discloses a detection method using the above-mentioned air tightness detection system, which includes:

[0050] S1: The control module receives the start command and sends a blocking command to the execution module;

[0051] In this embodiment, the control module is a PLC program control cabinet 2; the execution module includes three electromagnetic-pneumatic switching valves and four blocking cylinders, which are the same as in the first embodiment.

[0052] The PLC program control cabinet 2 issues a blocking command to the first electromagnetic-pneumatic switching valve YV1;

[0053] S2: the execution module blocks the nozzle of the valve body to be detected;

[0054] The first electromagnetic-pneumatic switching valve YV1 controls the first blocking cylinder QG1 and the third blocking cylinder QG3, so that the two nozzles of the first blocking cylinder QG1 and the third blocking cylinder QG3 are normally open in the middle of the valve bod...

Embodiment 3

[0061] refer to Figure 5 , 6 As shown, the present invention also discloses a fixture dedicated to the above-mentioned air tightness detection system, which includes a support assembly 5, a positioning assembly 6 and a sealing rubber pad 7, as follows:

[0062] The support assembly 5 includes a bottom plate 51 , left and right columns 52 , 53 and an upper plate 54 .

[0063] The valve body 1 to be tested is installed on the bottom plate 51 through the positioning assembly 6 .

[0064] In this embodiment, the positioning component 6 is a group of positioning blocks.

[0065] The plugging cylinders QG1, QG2 and QG4 are installed on the upper plate 54, and a sealing rubber pad 7 is arranged between it and the nozzle of the valve body to be tested.

[0066] The valve body to be detected is installed on the positioning assembly, and the execution module is arranged on the support assembly.

[0067] In this embodiment, two sets of tooling fixtures for the segmented valve body c...

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PUM

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Abstract

The invention discloses an air tightness detection system, a detection method and a special fixture, the detection system is used for detecting the air tightness of a valve body, and comprises a detection device, a control module and an execution module, the control module drives the execution module to block a nozzle of the valve body to be detected, and the detection device is used for detectingthe air tightness of the blocked nozzle of the valve body to be detected. During specific implementation, a valve body to be detected is arranged on a station corresponding to the special clamp, thenthe start button and the control module are pressed down, on one hand, the electromagnetic pneumatic switching valve is controlled to control the blocking air cylinder to block a nozzle of the valvebody to be detected, and on the other hand, the control module can conduct power supply detection on the valve body to be detected at the same time; and if the detection is qualified, the plugging cylinder loosens the to-be-detected valve body, and if the detection is unqualified, the alarm device gives an alarm. According to the invention, automatic detection procedures can be realized, operationis simple and convenient, and detection efficiency is high.

Description

technical field [0001] The invention relates to the technical field of valve body automatic detection, in particular to an air tightness detection system, a detection method and a special fixture. Background technique [0002] Air tightness, as a technical index closely related to product quality, has attracted the attention of many industries in recent years, which is specifically reflected in the importance companies attach to leak detection methods in the manufacturing process. Air tightness testing is playing an increasingly important role in ensuring product quality, especially for valve bodies used in gas equipment such as gas stoves. If the air tightness is not up to standard, it may lead to gas leakage, waste of resources, or cause catastrophic safety accidents such as fire. [0003] The section valve assembly is an important part for the gas to enter the burner after passing through the proportional valve, and is the key device for the section combustion of the gas...

Claims

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Application Information

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IPC IPC(8): G01M3/02B25B11/00
CPCG01M3/02B25B11/00
Inventor 徐海山欧尚贵潘叶江
Owner VATTI CORP LTD