CN219416577U - Portable air tightness detector for gas appliance connecting pipe - Google Patents
Portable air tightness detector for gas appliance connecting pipe Download PDFInfo
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- CN219416577U CN219416577U CN202321644986.7U CN202321644986U CN219416577U CN 219416577 U CN219416577 U CN 219416577U CN 202321644986 U CN202321644986 U CN 202321644986U CN 219416577 U CN219416577 U CN 219416577U
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Abstract
The utility model belongs to the technical field of airtight detection, and discloses a portable airtight detector for a gas appliance connecting pipe, which is used for solving the technical problem that airtight detection equipment in the prior art is used in a gas appliance connecting pipe. Automatic timing at the end of measurement the automatic venting and prompting if the measurement passed.
Description
Technical Field
The utility model relates to the technical field of airtight detection, in particular to a portable airtight detector for a gas appliance connecting pipe.
Background
In recent years, safety accidents caused by gas and related products occur, the quality safety supervision of products such as household gas appliances is further enhanced, the quality safety main responsibility of enterprises is realized, the potential safety hazards of the products are timely found and eliminated, and along with the increase of the gas tightness test requirements of gas appliance connecting pipe products, the development of special gas tightness field detection equipment suitable for gas appliance connecting pipes is not slow.
However, the current airtight detection equipment mainly uses general equipment, the output pressure is larger, the pressure is generally 1-10 Mpa, the small pressure is not accurately regulated, the precision range is +/-0.1 Mpa, the power supply voltage AC is 220V +/-10% or 380V +/-10% and mainly uses detection valve pipelines, the airtight detection equipment is large in size and cannot be carried in fixed places, the precision is not high, the pressure fluctuation range is large, whether a gas leakage condition is observed by naked eyes when a test sample is required to be placed in water for detecting the gas leakage condition, but the standard requirement is that the test pressure required by a gas appliance connecting pipe is 0.1-0.4 Mpa, the precision requirement is +/-0.01 Mpa, and the general airtight detection equipment cannot meet the product detection requirement of the gas appliance connecting pipe.
Disclosure of Invention
The utility model aims to solve the technical problems of the prior art that the air tightness detection equipment is used in a gas appliance connecting pipe, and provides a portable air tightness detector which has the advantages of small volume, light weight, automatic detection of air leakage and wide application range of power supply voltage (AC 110V-240V, DC V) for the gas appliance connecting pipe.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a portable gas tightness detector for gas utensil connecting pipe, includes the quick-witted case, and the machine incasement is equipped with switching power supply, and one side of machine case is connected with the air inlet pipeline, the air inlet pipeline is connected with the air inlet solenoid valve that sets up at the machine incasement, and the air inlet solenoid valve is connected with the air-vent valve, is connected with pressure switch on the air-vent valve, and pressure switch is connected with test tube, and test tube is used for connecting test sample tube, still is connected with the exhaust solenoid valve on the test tube, and the exhaust solenoid valve is connected with the exhaust pipeline, be connected with the control circuit who is used for controlling solenoid valve break-make and gas leakage warning on air inlet solenoid valve, still be equipped with on the machine case and take lamp control button and display panel.
Further, an oil-water separator is arranged on one side of the case, an inlet of the oil-water separator is connected with an air source air path, and an outlet of the oil-water separator is connected with an air inlet pipeline.
Further, the control circuit comprises an air inlet electromagnetic valve, a pressure switch, a time relay, a green indicator lamp, an air outlet electromagnetic valve, a second intermediate relay, a red alarm lamp and a third intermediate relay which are connected in parallel between output terminals e and f of the switching power supply, and the air inlet electromagnetic valve is connected with a starting switch; the green indicator lamp is connected with a second intermediate relay normally-closed contact, the second intermediate relay normally-closed contact is connected with a time relay first switch, the exhaust electromagnetic valve is connected with a debugging switch, and the second intermediate relay normally-closed contact is communicated with the time relay first switch and the exhaust electromagnetic valve is communicated with the debugging switch; the second intermediate relay is connected with a first intermediate relay normally-closed contact, a second intermediate relay self-protection switch is connected between the second intermediate relay and the first intermediate relay normally-closed contact, the first intermediate relay normally-closed contact is connected with a third intermediate relay normally-open contact, and the third intermediate relay normally-open contact is connected with a time relay second switch; the red alarm lamp is connected with a normally open contact of the second intermediate relay; the third intermediate relay is connected with a first normally open contact of the first intermediate relay, and the starting switch, the first switch of the time relay, the debugging switch, the second self-protection switch of the second intermediate relay, the second switch of the time relay, the normally open contact of the second intermediate relay and the first normally open contact of the first intermediate relay are all connected with an output terminal e of the switching power supply;
the pressure switch is connected with a first intermediate relay, a first intermediate relay second normally open contact is connected between starting terminals of the time relay, and a reset switch is connected between reset terminals of the time relay.
Further, a power indicator lamp is connected in parallel between the incoming line terminals of the switch power supply, a starting indicator lamp, a resetting indicator lamp and a debugging indicator lamp are connected in parallel between the outgoing line terminals of the switch power supply, and a power switch is connected between the power indicator lamp and the AC incoming line terminal a.
Further, a fuse is connected between the power switch and the AC inlet terminal a.
Further, the incoming line terminal of the power indicator lamp is also connected with a DC terminal.
Further, the control buttons with lamps comprise a power button with lamps, a starting button with lamps, a reset button with lamps and a debugging button with lamps.
Further, an air inlet interface, a test interface and an exhaust interface are arranged on the case, the air inlet interface is used for connecting an air inlet pipeline and an air inlet electromagnetic valve, the test interface is used for connecting a test sample tube and a test pipeline, and the exhaust interface is used for connecting an exhaust electromagnetic valve.
Further, the display panel comprises a pressure digital display panel and a time counting digital display panel; and the chassis is also provided with a debugging knob for adjusting the input pressure.
Further, handles are arranged on two sides of the case.
Compared with the prior art, the utility model has the following beneficial effects:
aiming at the special air tightness detection equipment for the gas appliance connecting pipe, the utility model has the advantages of miniaturization and portability, and the detection instrument is provided with an air source, thereby realizing wide voltage input. The device can realize the following functions: first, a pressure-stabilized gas source is provided. Secondly, a high-precision pressure switch is adopted, and the pressure control precision reaches +/-1 kPa. Thirdly, the digital control pressure is realized, the air leakage is automatically judged, and the air leakage condition is not observed by naked eyes when a test sample is put into water. Automatic timing at the end of measurement the automatic venting and prompting if the measurement passed. Fourth, the gas pressure regulator product air tightness test is compatible, multiple interfaces are configured, and the test of different kinds of household gas pipe products is realized. Fifthly, the automatic exhaust function is realized by the internal stable loop, and the testing efficiency can be improved.
The utility model can realize output pressure of 0.01 Mpa-0.7 Mpa (gas pipe), timing range: 0-9999 s, precision + -1 s, wide application range of power supply voltage, realization of AC 100V-240V or DC12V (automobile cigar lighter voltage, portable air tightness detector can also supply power through automobile 12VDC power supply), suitability for sites with large fluctuation of field voltage, small volume, light weight, portability, automatic detection of air leakage (without putting a test article into water to observe air leakage condition by naked eyes), and automatic air release.
Drawings
Fig. 1 is a schematic view of the internal structure of the present utility model.
Fig. 2 is a schematic view of the external structure of the present utility model.
FIG. 3 is a schematic diagram of the connection of the control circuit of the present utility model.
Fig. 4 is a schematic diagram of the time relay wiring of the present utility model.
FIG. 5 is a schematic diagram of the pressure switch of the present utility model.
The reference numerals have the following meanings: 1. a chassis; 2. an air inlet electromagnetic valve; 3. an air source air path; 4. an oil-water separator; 5. an air intake line; 6. testing a pipeline; 7. an exhaust electromagnetic valve; 8. a fuse; 9. a switching power supply; 10. a pressure switch; 11. a pressure regulating valve; 12. a time relay; 13. a red alarm lamp; 14. a green indicator light; 15. a pressure digital display panel; 16. a debugging knob; 17. a time counting digital display panel; 18. a handle; 19. a power button with a lamp; 20. a start button with a lamp; 21. reset button with lamp; 22. debugging buttons with lamps; 23. an air inlet interface; 24. testing an interface; 25. an exhaust port.
Detailed Description
The utility model is further described below with reference to the drawings and the detailed description.
As shown in fig. 1-2, a portable air tightness detector for a gas appliance connecting pipe comprises a case 1, wherein handles 18 are arranged on two sides of the case 1. The machine case 1 is internally provided with a switching power supply 9, one side of the machine case 1 is provided with an oil-water separator 4, an inlet of the oil-water separator 4 is connected with an air source air path 3, and an outlet of the oil-water separator 4 is connected with an air inlet pipeline 5. The air inlet pipeline 5 is connected with an air inlet electromagnetic valve 2 in the case 1 through an air inlet interface 23 arranged on the case 1, the air inlet electromagnetic valve 2 is connected with a pressure regulating valve 11, the pressure regulating valve 11 is connected with a pressure switch 10, the pressure switch 10 is connected with a test pipeline 6, the test pipeline 6 is connected with a test sample tube through a test interface 24 arranged on the case 1, the test pipeline 6 is also connected with an air outlet electromagnetic valve 7, the air outlet electromagnetic valve 7 is connected with an air outlet pipeline and is connected with an air outlet interface 25 arranged on the case 1, and the case 1 is also provided with a control button with a lamp and a display panel. The display panel comprises a pressure digital display panel 15 and a time counting digital display panel 17; the chassis 1 is also provided with a tuning knob 16 for adjusting the input pressure.
As shown in fig. 3-5, the air inlet electromagnetic valve 2 and the air outlet electromagnetic valve 7 are connected with a control circuit for controlling the on-off of the electromagnetic valves and the air leakage alarm. The control circuit comprises an air inlet electromagnetic valve 2, a pressure switch 10, a time relay 12, a green indicator lamp 14, an air outlet electromagnetic valve 7, a second intermediate relay 2J, a red alarm lamp 13 and a third intermediate relay 3J which are connected in parallel between output terminals e and f of a switching power supply 9, and a starting switch SQ is connected to the air inlet electromagnetic valve 2; the green indicator lamp 14 is connected with a second intermediate relay normally-closed contact 2J 2 Normally closed contact 2J of second intermediate relay 2 Is connected with a first switch SJ of a time relay 1 The exhaust electromagnetic valve 7 is connected with a debugging switch ST, and a second intermediate relay normally-closed contact 2J 2 First switch SJ of time relay 1 The exhaust electromagnetic valve 7 is communicated with the debugging switch ST; the second intermediate relay 2J is connected with a normally closed contact 1J of the first intermediate relay 2 The second intermediate relay 2J is in normally closed contact with the first intermediate relay 1J 2 Is connected with a second intermediate relay self-protection switch 2J 1 Normally closed contact 1J of first intermediate relay 2 Is connected with a third intermediate relay normally open contact 3J 1 Normally open contact 3 of third intermediate relayJ 1 Is connected with a second switch SJ of a time relay 2 The method comprises the steps of carrying out a first treatment on the surface of the The red alarm lamp 13 is connected with a second intermediate relay normally open contact 2J 3 The method comprises the steps of carrying out a first treatment on the surface of the The third intermediate relay 3J is connected with a first normally open contact 1J of the first intermediate relay 3 And start switch SQ, time relay first switch SJ 1 Debug switch ST, second intermediate relay self-protection switch 2J 1 Second switch SJ of time relay 2 Normally open contact 2J of second intermediate relay 3 First normally open contact 1J of first intermediate relay 3 Are connected to the output terminals e of the switching power supply 9.
The pressure switch 10 is connected with a first intermediate relay 1J, and a first intermediate relay second normally open contact 1J is connected between the starting terminals of the time relay 12 1 A reset switch SF is connected between reset terminals of the time relay 12. A power indicator lamp LD is connected in parallel between the incoming line terminals of the switch power supply 9, a starting indicator lamp LQ, a resetting indicator lamp LF and a debugging indicator lamp LT are connected in parallel between the outgoing line terminals of the switch power supply 9, and a power switch SD is connected between the power indicator lamp LD and the AC incoming line terminal a. A fuse 8 is connected between the power switch SD and the AC inlet terminal a.
The control buttons with the lamp comprise a power button 19 with the lamp, a start button 20 with the lamp, a reset button 21 with the lamp, a debugging button 22 with the lamp, a red alarm lamp 13 and a green indicator lamp 14. The power button 19 with lamp includes a power indicator LD and a power switch SD, the start button 20 with lamp includes a start indicator LQ and a start switch SQ, the reset button 21 with lamp includes a reset indicator LF and a reset switch SF, and the debug button 22 with lamp includes a debug indicator LT and a debug switch ST. The pressure switch 10 is a digital display pressure switch, the data is displayed on the pressure digital display panel 15, and the data of the time relay 12 is displayed on the time counting digital display panel 17.
When the test gas appliance connecting pipe is in operation, the test gas appliance connecting pipe is connected through the test interface 24, after the power button 19 with the lamp is pressed, 100-220V alternating voltage is changed into direct current +12V voltage through the switch power supply 9, after the start button 20 with the lamp is pressed, the start switch SQ is closed, the air inlet electromagnetic valve 2 is opened after power is supplied, and air source gas passes through the air inlet electromagnetic valve 2 and pressesThe force switch 10 and the test pipeline 6 enter a test sample, after the gas pressure reaches the set pressure, the starting switch SQ is released, the pressure switch 10 outputs a +12V signal, the air inlet electromagnetic valve 2 is closed at the moment, the first intermediate relay 1J is powered on, and the first intermediate relay second normally open contact 1J 1 Closing, starting the time relay 12 to start timing (time can be set by the time relay 12), and when the time set value is reached, switching the time relay of the time relay 12 to the first switch SJ 1 Closing, time relay second switch SJ 2 Opening the air discharge electromagnetic valve 7, outputting a switch signal to start the air discharge electromagnetic valve 7, if no air leakage occurs in the test time, turning on the green indicator lamp 14 after the test is finished, and if the air leakage occurs in the test process, instantaneously powering on the second intermediate relay 2J (the test starting instantaneous pressure is a set pressure value, and the first normally open contact 1J of the first intermediate relay 3 Closing, and enabling the third intermediate relay 3J to be in normally open contact 3J after the third intermediate relay 3J is powered on 1 Closing, and testing time relay second switch SJ 2 In a normally closed state), a second intermediate relay self-protection switch 2J 1 The pressure switch 10 is in a normally closed state after being closed, and after the first intermediate relay 1J is powered off, the second intermediate relay 2J is self-protected by the second intermediate relay 2J 1 The formed passage is in a power-on state, and at this time, the normally-closed contact 2J of the second intermediate relay 2 Open, second intermediate relay normally open contact 2J 3 The green indicator lamp 14 is closed, the red lamp is powered off, the red lamp is turned on and off, and the red alarm lamp 13 is lighted and has a prompt tone.
After the measurement is completed, the reset button 21 with lamp is pressed to prepare for the next test. The debug knob 16 is not used in testing, but is used when debugging the set output pressure.
Claims (10)
1. The utility model provides a portable gas tightness detector for gas utensil connecting pipe, includes quick-witted case (1), is equipped with switching power supply (9) in quick-witted case (1), and one side of machine case (1) is connected with inlet tube (5), characterized by: the utility model discloses a test device for the air-leakage of the air conditioner, including quick-witted case (1), air inlet pipeline (5), air inlet solenoid valve (2) are connected with air-vent valve (11), are connected with pressure switch (10) on air-vent valve (11), and pressure switch (10) are connected with test tube (6), and test tube (6) are used for connecting test sample tube, still are connected with exhaust solenoid valve (7) on test tube (6), and exhaust solenoid valve (7) are connected with exhaust pipeline, be connected with the control circuit who is used for controlling solenoid valve break-make and gas leakage warning on air inlet solenoid valve (2), exhaust solenoid valve (7), still be equipped with on machine case (1) and take lamp control button and display panel.
2. The portable tightness detector for gas appliance connection pipes of claim 1, wherein: an oil-water separator (4) is arranged on one side of the case (1), an air source air path (3) is connected to an inlet of the oil-water separator (4), and an outlet of the oil-water separator (4) is connected with an air inlet pipeline (5).
3. The portable tightness detector for gas appliance connection pipes as set forth in claim 2, wherein: the control circuit comprises an air inlet electromagnetic valve (2), a pressure switch (10), a time relay (12), a green indicator lamp (14), an exhaust electromagnetic valve (7), a second intermediate relay (2J), a red alarm lamp (13) and a third intermediate relay (3J) which are connected in parallel between output terminals e and f of a switching power supply (9), wherein a starting Switch (SQ) is connected to the air inlet electromagnetic valve (2); the green indicator lamp (14) is connected with a second intermediate relay normally-closed contact (2J) 2 ) Normally closed contact of second intermediate relay (2J) 2 ) Is connected with a time relay first Switch (SJ) 1 ) The exhaust electromagnetic valve (7) is connected with a debugging Switch (ST), and a second intermediate relay normally-closed contact (2J) 2 ) With time relay first Switch (SJ) 1 ) The exhaust electromagnetic valve (7) is communicated with the debugging Switch (ST); the second intermediate relay (2J) is connected with a normally closed contact (1J) of the first intermediate relay 2 ) The second intermediate relay (2J) is in normally closed contact (1J) with the first intermediate relay 2 ) The connection betweenIs connected with a second intermediate relay self-protection switch (2J) 1 ) Normally closed contact of first intermediate relay (1J) 2 ) Is connected with a third intermediate relay normally open contact (3J) 1 ) Normally open contact of third intermediate relay (3J) 1 ) Is connected with a time relay second Switch (SJ) 2 ) The method comprises the steps of carrying out a first treatment on the surface of the The red alarm lamp (13) is connected with a second intermediate relay normally open contact (2J) 3 ) The method comprises the steps of carrying out a first treatment on the surface of the The third intermediate relay (3J) is connected with a first normally open contact (1J) of the first intermediate relay 3 ) And a start Switch (SQ), a time relay first Switch (SJ) 1 ) Debug Switch (ST), second intermediate relay self-protection switch (2J) 1 ) Second switch of time relay (SJ) 2 ) Normally open contact of second intermediate relay (2J) 3 ) First normally open contact of first intermediate relay (1J) 3 ) Are all connected with an output terminal e of the switching power supply (9);
the pressure switch (10) is connected with a first intermediate relay (1J), and a second normally open contact (1J) of the first intermediate relay is connected between starting terminals of the time relay (12) 1 ) A reset Switch (SF) is connected between reset terminals of the time relay (12).
4. A portable air tightness detector for a gas appliance connection tube as defined in claim 3, wherein: a power indicator Lamp (LD) is connected in parallel between the incoming line terminals of the switch power supply (9), a starting indicator Lamp (LQ), a resetting indicator Lamp (LF) and a debugging indicator Lamp (LT) are connected in parallel between the outgoing line terminals of the switch power supply (9), and a power Switch (SD) is connected between the power indicator Lamp (LD) and the AC incoming line terminal a.
5. The portable tightness detector for gas appliance connection pipes as defined in claim 4, wherein: a fuse (8) is connected between the power Switch (SD) and the AC incoming line terminal a.
6. The portable tightness detector for gas appliance connection pipes as defined in claim 5, wherein: and the incoming line terminal of the power indicator Lamp (LD) is also connected with a DC terminal.
7. The portable tightness detector for gas appliance connection pipes as defined in claim 6, wherein: the control button with the lamp comprises a power button (19) with the lamp, a starting button (20) with the lamp, a reset button (21) with the lamp and a debugging button (22) with the lamp.
8. A portable tightness detector for gas burner connection pipes according to claim 3 or 7, characterized in that: the machine case (1) is provided with an air inlet interface (23), a test interface (24) and an exhaust interface (25), wherein the air inlet interface (23) is used for connecting an air inlet pipeline (5) with an air inlet electromagnetic valve (2), the test interface (24) is used for connecting a test sample tube with a test pipeline (6), and the exhaust interface (25) is used for connecting an exhaust electromagnetic valve (7).
9. The portable tightness detector for gas appliance connection pipes as defined in claim 8, wherein: the display panel comprises a pressure digital display panel (15) and a time counting digital display panel (17); the case (1) is also provided with a debugging knob (16) for adjusting input pressure.
10. The portable tightness detector for gas appliance connection pipes as set forth in claim 9, wherein: handles (18) are also arranged on two sides of the case (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321644986.7U CN219416577U (en) | 2023-06-27 | 2023-06-27 | Portable air tightness detector for gas appliance connecting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321644986.7U CN219416577U (en) | 2023-06-27 | 2023-06-27 | Portable air tightness detector for gas appliance connecting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219416577U true CN219416577U (en) | 2023-07-25 |
Family
ID=87234022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321644986.7U Active CN219416577U (en) | 2023-06-27 | 2023-06-27 | Portable air tightness detector for gas appliance connecting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219416577U (en) |
-
2023
- 2023-06-27 CN CN202321644986.7U patent/CN219416577U/en active Active
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