CN212134003U - Double-tube detection device for air-tightness instrument - Google Patents
Double-tube detection device for air-tightness instrument Download PDFInfo
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- CN212134003U CN212134003U CN202021178920.XU CN202021178920U CN212134003U CN 212134003 U CN212134003 U CN 212134003U CN 202021178920 U CN202021178920 U CN 202021178920U CN 212134003 U CN212134003 U CN 212134003U
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Abstract
The utility model discloses a double-tube detection device of an air tightness instrument, which comprises an air circuit and a circuit; the gas circuit comprises a gas source and a solenoid valve, the controlled end of the gas source is connected with the output end of the circuit, the gas outlet end of the gas source is connected to the object to be tested through the gas circuit of the gas source, and the solenoid valve is connected to the gas circuit of the gas source; the circuit comprises a touch screen, a controller and an air pressure sensor connected to a joint of a measured object through a detection air path, wherein the output ends of the touch screen and the air pressure sensor are respectively connected with the input end of the controller, the output end of the controller is connected with a controlled end of an air source, and the output end of the controller is connected with the input end of a solenoid valve. The utility model discloses need not to input the offset when the test, direct input need test the atmospheric pressure can, simplified operating procedure, can also use the higher air supply of pressure simultaneously, increased the inflation rate of product, reduced the time that the product detected, improved detection efficiency.
Description
Technical Field
The utility model relates to an airtight appearance technical field, especially a double-barrelled detection device of airtight appearance.
Background
At present, when the existing direct-pressure type air tightness instrument in the market detects air tightness, air is inflated into a measured object through an air source, the air pressure in an air path is monitored in the inflating process, when the air pressure reaches a certain numerical value, the inflation is stopped, and the leakage rate of the measured object is calculated according to the change of the air pressure in the measured object.
Because the monitored air pressure is the air pressure of the monitored air source on the inflation pipeline of the measured object, the air pressure in the measured object cannot be accurately measured when the air source works, the measured air pressure value is always greater than the air pressure in the measured object, and the result is that when the monitored air pressure value reaches the pressure value set by a user, the air pressure in the measured object does not reach the pressure value set by the user and cannot meet the test requirement of the user, so that when the user sets the test air pressure, an offset has to be added to the pressure value required by the test to prevent the problem of insufficient inflation pressure in the measured object. The offset is greatly influenced by the pressure of the air source, and the user needs to determine the offset before testing each time, so that the offset is very complicated, the difficulty in using the product is increased to a certain extent, and the satisfaction degree of the user on the product is reduced.
Because the pressure of the inflation air source is limited due to the defects, only the air source with lower pressure can be used, the inflation time of the detected object is too long, the whole detection time is prolonged, and the detection efficiency of the product is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that needs to solve provides a double-barrelled detection device of airtight appearance, can use the air supply of atmospheric pressure, need not to set for the offset, improves detection efficiency.
In order to solve the technical problem, the utility model adopts the following technical proposal.
The double-tube detection device of the air tightness instrument comprises an air path for inflating a detected object and a circuit for detecting the detected object; the gas circuit comprises a gas source for inflating the measured object and a solenoid valve for controlling the inflation and deflation of the measured object, the controlled end of the gas source is connected with the output end of the circuit, the air outlet end of the gas source is connected to the measured object through a gas source gas circuit, and the solenoid valve is connected to the gas source gas circuit; the circuit comprises a touch screen for inputting control information, a controller for sending a control instruction according to information input by the touch screen, and an air pressure sensor connected to a joint of a measured object through a detection air passage and used for monitoring air pressure in the measured object, wherein the output ends of the touch screen and the air pressure sensor are respectively connected with the input end of the controller, the output end of the controller is connected with a controlled end of an air source, and the output end of the controller is connected with the input end of a solenoid valve.
According to the double-tube detection device of the air-tightness instrument, the detection air path is connected to the air source air path at the interface of the detected object.
According to the double-tube detection device of the air-tight instrument, the electromagnetic valve comprises an air inlet electromagnetic valve arranged on an air source air path behind the air source and an air outlet electromagnetic valve connected to the air source air path behind the air inlet electromagnetic valve through an air path, and the input ends of the air inlet electromagnetic valve and the air outlet electromagnetic valve are respectively connected with the output end of the controller.
According to the double-tube detection device of the air tightness instrument, the air path connected with the air outlet electromagnetic valve is provided with the silencer for silencing.
Due to the adoption of the technical scheme, the utility model has the following technical progress.
The utility model discloses need not to input the offset when the test, direct input need test the atmospheric pressure can, simplified operating procedure, can also use the higher air supply of pressure simultaneously, increased the inflation rate of product, reduced the time that the product detected, improved detection efficiency.
Drawings
Fig. 1 is a schematic structural view of the present invention;
wherein: 1. the gas source, 2, gas inlet solenoid valve, 3, gas outlet solenoid valve, 4, silencer, 5, air pressure sensor, 6, gas source gas circuit, and 7, detection gas circuit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The double-tube detection device of the air tightness instrument is structurally shown in figure 1 and comprises an air path and an electric circuit. The air circuit is used for inflating the object to be detected, the circuit is used for detecting the object to be detected, and the controlled end of the air circuit is connected to the circuit.
The gas circuit comprises a gas source 1 and an electromagnetic valve. The air source 1 is used for inflating a measured object, the electromagnetic valve is used for controlling the inflation and deflation of the measured object, the controlled end of the air source 1 is connected to the output end of the circuit, the air outlet end of the air source 1 is connected to the measured object through the air source air circuit 6, and the electromagnetic valve is connected to the air source air circuit 6.
The solenoid valves include an inlet solenoid valve 2 and an outlet solenoid valve 3. The air inlet solenoid valve 2 is arranged on an air source air circuit 6 behind the air source 1 and used for controlling inflation of a measured object, and the air outlet solenoid valve 3 is connected to the air source air circuit 6 behind the air inlet solenoid valve 2 through an air circuit and used for controlling deflation of the measured object. The input ends of the air inlet electromagnetic valve 2 and the air outlet electromagnetic valve 3 are respectively connected with the output end of the air path. After the air inlet electromagnetic valve 2 is closed, the air source 1 inflates the detected object, the air inlet electromagnetic valve 2 is closed after inflation is completed, the circuit detects the detected object, the air outlet electromagnetic valve 3 is opened after detection is completed, and air is discharged through the air path connected by the side.
Because the atmospheric pressure in the testee is than higher, the noise can be bigger when gassing through the solenoid valve of giving vent to anger, receives the influence of the noise of high decibel for a long time, can produce the damage to staff's hearing in the workshop, for the noise prevention influences staff's healthy, be provided with muffler 4 on the gas circuit of being connected with solenoid valve 3 of giving vent to anger, the noise that produces when being used for eliminating the gassing, the noise that produces when reducing the gassing is to the injury of people's health.
The circuit comprises a touch screen, a controller and an air pressure sensor 5, wherein the touch screen is used for inputting control information, the controller is used for sending out a control instruction according to the information input by the touch screen, and the air pressure sensor 5 is used for monitoring the air pressure of a measured object. The output ends of the touch screen and the air pressure sensor 5 are respectively connected with the input end of the controller, the output end of the controller is connected with the input end of the air source 1, and the output end of the controller is respectively connected with the input ends of the air inlet electromagnetic valve 2 and the air outlet electromagnetic valve 3.
When the utility model works, a user inputs test pressure, test time and a leakage threshold value through the touch screen, the controller opens the air source and the air inlet solenoid valve according to the test pressure set by the user, the air source inflates the tested object through the air source air circuit, and feeds the pressure value back to the controller through the detection air circuit, when the air pressure in the tested object reaches the test pressure set by the user, the air source and the air inlet solenoid valve are immediately closed, after the air pressure in the tested object is stabilized, the air pressure in the tested object when the test time set by the user begins and ends is recorded, the air pressure leakage value is calculated, the air pressure leakage value is compared with the leakage threshold value set by the user, if the air tightness detection of the tested object is judged to be passed, if the air tightness detection of the tested object is larger than the leakage threshold value, the test result is displayed on the touch screen, then, and releasing the gas in the object to be tested to finish the test.
The utility model discloses in because baroceptor's check point is farthest from the air supply, nearest from the measured object, very big reduction air supply atmospheric pressure to the influence of baroceptor detection atmospheric pressure, the atmospheric pressure that makes baroceptor detect is close to the actual atmospheric pressure in the measured object more, accomplishes the influence that can ignore the air supply atmospheric pressure and bring.
Claims (4)
1. The double-tube detection device of the air tightness instrument comprises an air path for inflating a detected object and a circuit for detecting the detected object; the method is characterized in that: the gas circuit comprises a gas source (1) for inflating a measured object and a solenoid valve for controlling inflation and deflation of the measured object, the controlled end of the gas source (1) is connected with the output end of the circuit, the gas outlet end of the gas source (1) is connected to the measured object through a gas source gas circuit (6), and the solenoid valve is connected to the gas source gas circuit (6); the circuit comprises a touch screen for inputting control information, a controller for sending a control instruction according to information input by the touch screen, and an air pressure sensor (5) connected to a joint of a measured object through a detection air passage (7) and used for monitoring air pressure in the measured object, wherein the output end of the touch screen and the output end of the air pressure sensor (5) are respectively connected with the input end of the controller, the output end of the controller is connected with a controlled end of an air source (1), and the output end of the controller is connected with the input end of an electromagnetic valve.
2. The double-tube detection device of the air tightness instrument according to claim 1, characterized in that: and the detection gas circuit (7) is connected to a gas source gas circuit (6) at the interface of the measured object.
3. The double-tube detection device of the air tightness instrument according to claim 1, characterized in that: the electromagnetic valve comprises an air inlet electromagnetic valve (2) arranged on an air source air circuit (6) behind the air source (1) and an air outlet electromagnetic valve (3) connected to the air source air circuit (6) behind the air inlet electromagnetic valve (2) through an air circuit, and the input ends of the air inlet electromagnetic valve (2) and the air outlet electromagnetic valve (3) are respectively connected with the output end of the controller.
4. The double-tube detection device of the air tightness instrument according to claim 3, characterized in that: and a silencer (4) for silencing is arranged on the gas path connected with the gas outlet electromagnetic valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021178920.XU CN212134003U (en) | 2020-06-23 | 2020-06-23 | Double-tube detection device for air-tightness instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021178920.XU CN212134003U (en) | 2020-06-23 | 2020-06-23 | Double-tube detection device for air-tightness instrument |
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| Publication Number | Publication Date |
|---|---|
| CN212134003U true CN212134003U (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021178920.XU Active CN212134003U (en) | 2020-06-23 | 2020-06-23 | Double-tube detection device for air-tightness instrument |
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|---|---|
| CN (1) | CN212134003U (en) |
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2020
- 2020-06-23 CN CN202021178920.XU patent/CN212134003U/en active Active
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