CN201163232Y - Leak tightness detection apparatus for dry type gas meter - Google Patents
Leak tightness detection apparatus for dry type gas meter Download PDFInfo
- Publication number
- CN201163232Y CN201163232Y CNU2008200837035U CN200820083703U CN201163232Y CN 201163232 Y CN201163232 Y CN 201163232Y CN U2008200837035 U CNU2008200837035 U CN U2008200837035U CN 200820083703 U CN200820083703 U CN 200820083703U CN 201163232 Y CN201163232 Y CN 201163232Y
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- China
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- gas meter
- cover plate
- dry type
- leak tightness
- type gas
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Abstract
The utility model provides a device for testing leak tightness of a dry type gas meter. The device comprises a sealed container, a cylinder, a cover plate, a gas meter sealing mechanism, an air flow pipe and an air flow test port, wherein the cylinder is arranged above the sealed container, the cover plate is connected with a piston rod of the cylinder, the gas meter sealing mechanism is fixedly connected with the lower part of the cover plate and is connected with the air flow test port by the air flow pipe, the sealed container is provided with an opening and a pumping hole, the cover plate corresponds to the position of the opening, and when the device is used, the cover plate and the opening are in sealing connection, so that in the process of testing, a relatively vacuum environment is created outside the gas meter to be tested so as to observe the change of air pressure in the gas meter, and the vacuum environment isolates the gas meter to be tested from the temperature transfer with the outside, thereby reducing the influence of the temperature on the air pressure and effectively improving the test accuracy; moreover, the test accuracy is good, and the quality of the gas meter is not affected by the test.
Description
Technical field
The utility model relates to a kind of instrument device for detecting sealability, specifically a kind of dry type gas meter leak tightness pick-up unit.
Background technology
At present, gas meter leak tightness detects two kinds of methods: a kind of is that wet type detects, and just gas meter, flow meter is immersed in the water and detects, and the shortcoming of this detection method is: in testing process, water influences the quality of gas meter, flow meter possibly.Another kind is that dry type detects, and is the pressurized air that charges into certain pressure in tested table, observes tested table internal pressure by tensimeter then and changes, thereby judge the degree that tested table leaks.The shortcoming of this detection method is that temperature influence is bigger, easily erroneous judgement.
Summary of the invention
The dry type gas meter leak tightness pick-up unit that technical problem to be solved in the utility model is to propose that a kind of detection accuracy is good, the gas meter, flow meter quality can examined influence.
For solving the problems of the technologies described above, a kind of dry type gas meter leak tightness of the utility model pick-up unit comprises airtight container, cylinder, cover plate, the pocket watch sealing mechanism, airflow duct and air-flow detect mouth, described cylinder is located at the top of described airtight container, described cover plate links to each other with the piston rod of described cylinder, described pocket watch sealing mechanism is fixedly connected on the below of described cover plate, described pocket watch sealing mechanism detects mouth by described airflow duct and described air-flow and links to each other, described airtight container is provided with opening and bleeding point, described cover plate is corresponding with described opening upper-lower position, and both are tightly connected during work.
Above-mentioned a kind of dry type gas meter leak tightness pick-up unit, it also includes pull bar, and the bottom of described each pull bar is connected the both sides of each opening on the described airtight container, and the both sides of described each cover plate link to each other with described adjacent two pull bars respectively.
Above-mentioned a kind of dry type gas meter leak tightness pick-up unit, the both sides of described each cover plate are respectively by countervane and described pull bar location.
Above-mentioned a kind of dry type gas meter leak tightness pick-up unit, the opening part of described airtight container is provided with the flange circle, and described flange circle is provided with O-ring seals.
Above-mentioned a kind of dry type gas meter leak tightness pick-up unit, described air-flow detects the upside that mouth is located at described cover plate.
Above-mentioned a kind of dry type gas meter leak tightness pick-up unit, described pocket watch sealing mechanism comprises pocket watch plate, little cylinder, connector, cross bar and resilient seal head, the upper/lower terminal of described little cylinder links to each other with connector with described cover plate respectively, described connector links to each other with described cross bar simultaneously, and described resilient seal head is connected the two ends of described cross bar.
The utility model is owing to adopted above-mentioned technical pattern, during use, cylinder and airtight container are fixed in the detection stand, on table to be checked inserted pocket watch sealing mechanism under the cover plate from opening part, simultaneously pocket watch sealing mechanism (resilient seal head) down means of press seals two mouths of pipe of table to be checked, the air cylinder driven gland bonnet descends during detection, is close to the opening on the airtight container is airtight, by the through hole in the pocket watch sealing mechanism (resilient seal head), the air pressure in the gas meter, flow meter is drawn.Bleed in airtight container then, the gas outlet observation table internal pressure of drawing by gas meter, flow meter changes, and with other tested table to recently judging its sealing.Because it has adopted the dry type detection method, the gas meter, flow meter quality can examinedly not influence.And, because in testing process, observe air pressure change in the gas meter, flow meter at the outside environment of making a relative vacuum of gas meter, flow meter to be checked, utilize vacuum insulating table to be checked and extraneous temperature transfer, thereby reduce the influence of temperature for air pressure, improve test accuracy effectively, detection accuracy is good.During detection, the upper end of pull bar can be fixed on and detect in the stand, like this, not only can strengthen the steadiness of airtight container, also be convenient to cover plate and move up and down.Countervane can be so that the location of cover plate when moving up and down do not make its double swerve or rotation skew.The flange circle of band O-ring seals flange circle can guarantee being tightly connected between itself and cover plate.Air-flow detects the upside that mouth is located at cover plate, can be convenient to detecting operation.
Description of drawings
Fig. 1 is the structural representation of the utility model pick-up unit;
Fig. 2 is that the Zoom Side of Fig. 1 cover plate and pocket watch sealing mechanism is to structural representation;
Fig. 3 is the side direction structural representation with respect to Fig. 2.
Embodiment
As shown in Figure 1, dry type gas meter leak tightness pick-up unit comprises that barrel-shaped airtight container 11, cylinder 1, pull bar 2, cover plate 5, pocket watch sealing mechanism, airflow duct 8 and air-flow detect mouth 6, the top of barrel-shaped airtight container 11 is provided with three openings (number of openings can be offered by quantity that once need the inspection table), each opening part weldering is provided with flange circle 10, and flange circle 10 is provided with O-ring seals 9.The lower end of airtight container 11 is provided with bleeding point 12.Cylinder 1 is located at the top of each opening, and cover plate 5 links to each other with the piston rod of cylinder 1 by connector 4, and cover plate 5 is corresponding with the opening upper-lower position of airtight container 11, and air-flow detects the upside that mouth 6 is located at cover plate 5.The bottom of pull bar 2 is connected the both sides of each opening on the airtight container 12, and the upper end of pull bar 2 is connected to be detected on the stand 3.The both sides of each cover plate 5 link to each other with adjacent two pull bars 2 by countervane 7 respectively, and by its location.
As shown in Figures 2 and 3, the pocket watch sealing mechanism comprises pocket watch plate 14, stingy cylinder 15, connector 16, cross bar 17 and resilient seal head 19, the upper/lower terminal of stingy cylinder 15 links to each other with connector 16 with the lower end of cover plate 5 respectively, connector 16 links to each other with cross bar 17 simultaneously, and two resilient seal heads 19 are connected the two ends of cross bar 17 by bearing pin 18.Be provided with air hole in the middle of the resilient seal head 19, detect mouth 6 by airflow duct 8 and air-flow and link to each other.Two airtight linking to each other of the mouth of pipe of resilient seal head 19 and gas meter, flow meter 13 to be checked, like this, air hole that table 13 to be checked just can be by resilient seal head 19 and airflow duct 8 and air-flow detect mouthfuls 6 and link to each other.
Claims (6)
1, a kind of dry type gas meter leak tightness pick-up unit, it is characterized in that, it comprises airtight container, cylinder, cover plate, the pocket watch sealing mechanism, airflow duct and air-flow detect mouth, described cylinder is located at the top of described airtight container, described cover plate links to each other with the piston rod of described cylinder, described pocket watch sealing mechanism is fixedly connected on the below of described cover plate, described pocket watch sealing mechanism detects mouth by described airflow duct and described air-flow and links to each other, described airtight container is provided with opening and bleeding point, described cover plate is corresponding with described opening upper-lower position, and both are tightly connected during work.
2, a kind of dry type gas meter leak tightness pick-up unit as claimed in claim 1, it is characterized in that, it also includes pull bar, and the bottom of described each pull bar is connected the both sides of each opening on the described airtight container, and the both sides of described each cover plate link to each other with described adjacent two pull bars respectively.
3, a kind of dry type gas meter leak tightness pick-up unit as claimed in claim 2 is characterized in that, the both sides of described each cover plate are respectively by countervane and described pull bar location.
4, as claim 1,2 or 3 described a kind of dry type gas meter leak tightness pick-up units, it is characterized in that the opening part of described airtight container is provided with the flange circle, described flange circle is provided with O-ring seals.
As claim 1,2 or 3 described a kind of dry type gas meter leak tightness pick-up units, it is characterized in that 5, described air-flow detects the upside that mouth is located at described cover plate.
6, as claim 1,2 or 3 described a kind of dry type gas meter leak tightness pick-up units, it is characterized in that, described pocket watch sealing mechanism comprises pocket watch plate, little cylinder, connector, cross bar and resilient seal head, the upper/lower terminal of described little cylinder links to each other with connector with described cover plate respectively, described connector links to each other with described cross bar simultaneously, and described resilient seal head is connected the two ends of described cross bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200837035U CN201163232Y (en) | 2008-03-04 | 2008-03-04 | Leak tightness detection apparatus for dry type gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200837035U CN201163232Y (en) | 2008-03-04 | 2008-03-04 | Leak tightness detection apparatus for dry type gas meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201163232Y true CN201163232Y (en) | 2008-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200837035U Expired - Fee Related CN201163232Y (en) | 2008-03-04 | 2008-03-04 | Leak tightness detection apparatus for dry type gas meter |
Country Status (1)
| Country | Link |
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| CN (1) | CN201163232Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650249B (en) * | 2009-08-26 | 2010-12-01 | 吴江市华源印铁制罐有限责任公司 | Airtight detecting apparatus |
| CN101650250B (en) * | 2009-09-02 | 2011-07-20 | 上海理工大学 | Hot water pressure test leak-detecting device of heat exchanger |
| CN108827549A (en) * | 2018-07-20 | 2018-11-16 | 丹东科泰仪器仪表有限公司 | Detect gas meter leak tightness measuring device |
-
2008
- 2008-03-04 CN CNU2008200837035U patent/CN201163232Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650249B (en) * | 2009-08-26 | 2010-12-01 | 吴江市华源印铁制罐有限责任公司 | Airtight detecting apparatus |
| CN101650250B (en) * | 2009-09-02 | 2011-07-20 | 上海理工大学 | Hot water pressure test leak-detecting device of heat exchanger |
| CN108827549A (en) * | 2018-07-20 | 2018-11-16 | 丹东科泰仪器仪表有限公司 | Detect gas meter leak tightness measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081210 Termination date: 20100304 |