CN216746617U - A leak hunting device that is used for zirconia to examine oxygen sensing element gas tightness to detect - Google Patents
A leak hunting device that is used for zirconia to examine oxygen sensing element gas tightness to detect Download PDFInfo
- Publication number
- CN216746617U CN216746617U CN202123179283.5U CN202123179283U CN216746617U CN 216746617 U CN216746617 U CN 216746617U CN 202123179283 U CN202123179283 U CN 202123179283U CN 216746617 U CN216746617 U CN 216746617U
- Authority
- CN
- China
- Prior art keywords
- detection
- zirconia
- sealing
- sensitive element
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a leak detection device for detecting the air tightness of a sensitive element for measuring oxygen by zirconia, which comprises a sealing seat and a sealing cover, wherein the sealing seat is provided with an accommodating groove, the sealing cover is spirally arranged on the sealing seat and is matched with the accommodating groove to form an accommodating cavity, the bottom of the sealing seat is also provided with a detection cup, the top of the sealing cover is provided with an air hood, and the air hood is connected with a low-pressure air compressor through a pipeline; the containing cavity is used for placing a sensitive element, the sensitive element partially extends into the detection cup, and sealing gaskets are arranged between the sensitive element and the bottom of the containing groove as well as between the sensitive element and the sealing cover. The utility model has the advantages of simple operation, easy disassembly, sensitive detection and visual measurement.
Description
Technical Field
The utility model relates to a zirconia oxygen detector prepares technical field, concretely relates to leak hunting device that is used for zirconia oxygen sensing element gas tightness to detect.
Background
The zirconia oxygen measurement detector is used for measuring the oxygen content in high-temperature flue gas of various boilers, and achieves the purposes of effectively controlling combustion, saving energy, reducing emission and the like. These boilers include power generation boilers, thermoelectric boilers and industrial boilers, which are widely used in various fields such as electric power, petrochemical industry, steel, light textile, food processing, pharmacy, heat supply and the like. According to incomplete statistics, the reserves of domestic power generation boilers and industrial boilers are more than 50 thousands, every year market demands for thousands of zirconia oxygen measurement probes, and the core device of the zirconia oxygen measurement probe is a zirconia sensitive element, so that the quality of the zirconia oxygen measurement probe directly relates to key factors such as the measurement accuracy, the stability, the service life and the like of zirconia detection.
The sensitive element of the zirconia oxygen measuring detector consists of zirconia functional ceramics and a metal flange, and the zirconia sensitive element and the flange are in sealing combination in various forms, wherein the zirconia sensitive element and the flange have various sealing positions such as argon arc welding seams, laser welding seams, ceramic-metal brazing seams, inorganic adhesive seams and the like. When slight gas leakage exists at the sealing connection position of the detected sensitive element, the oxygen measuring detector which is put into the market, particularly a domestic detector, has the problems of large measurement precision deviation, large measurement data fluctuation, short service life and the like.
The detection device is extremely important for the sealing detection of sensitive elements, and the existing detection device has high operation difficulty, poor observation effect and poor use effect, so that a leakage detection device which is convenient to use is urgently needed.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a leak hunting device that is used for zirconia to survey oxygen sensing element gas tightness to detect, have the simple operation, quick detachable, detect sensitive, measure audio-visual advantage.
In order to solve the technical problem, the utility model provides a leak hunting device for zirconia oxygen measurement sensing element gas tightness detection, including seal receptacle and sealed lid, be provided with the storage tank on the seal receptacle, sealed lid establishes on the seal receptacle soon and cooperates with the storage tank and forms the holding chamber, the seal receptacle bottom still is provided with the detection cup, seted up the venthole on the detection cup, the holding chamber is through-connected with the detection cup, the seal lid top is provided with the gas hood, the holding chamber is through-connected with the gas hood, the gas hood is connected with low-pressure air compressor through the pipeline;
the containing cavity is used for placing a sensitive element, the sensitive element partially extends into the detection cup, and sealing gaskets are arranged between the sensitive element and the bottom of the containing groove as well as between the sensitive element and the sealing cover.
Further, the venthole is arranged at the bottom of the detection cup, and an air tap is arranged on the venthole.
Further, the detection cup comprises a sleeve and a bottom plate, one end of the sleeve is connected with the sealing seat in a sealing mode, the other end of the sleeve is connected with the bottom plate in a sealing mode, the air outlet is formed in the bottom plate, and the air faucet is connected with the bottom plate in a sealing mode.
Further, an air pressure valve and an air pressure gauge are arranged between the air hood and the low-pressure air compressor.
Further, the detection cup also comprises detection liquid for measuring whether gas is discharged from the gas outlet hole of the detection cup.
Further, the detection liquid is water, the detection liquid is arranged in a container, and a fixing support is arranged on the container.
Furthermore, the sealing seat, the sealing cover, the detection cup and the gas hood are made of 304 stainless steel, 316 stainless steel, brass H65 or brass H68.
Further, the sealing gasket is vacuum rubber.
The utility model has the advantages that:
1. the device is small in pressurizing cavity, can quickly test the air tightness of each sealing position of the zirconia oxygen measurement sensitive element, and avoids the problem of detection precision reduction caused by the core sensitive element sealing problem from the source of the detector.
2. When in use, the device has the effects of easy disassembly in operation, sensitive detection, visual measurement and the like. By using the device, the measurement accuracy and reliability are improved, and the measurement accuracy, reliability, service life and the like of the smoke detector are effectively guaranteed; in the application field, the method has important practical application value.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the structure of FIG. 1;
FIG. 3 is a schematic structural view of the present invention used with a container;
fig. 4 is a schematic view of the container of fig. 3.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
Referring to fig. 1 to 3, an embodiment of the leak detection device for detecting the air tightness of the oxygen sensing element for zirconia according to the present invention includes a sealing seat 1 and a sealing cover 2, wherein the sealing seat is provided with a containing groove, the sealing cover is rotatably arranged on the sealing seat and forms a containing cavity by cooperating with the containing groove, the bottom of the sealing seat is further provided with a detection cup 3, the detection cup is provided with an air outlet hole, the containing cavity is connected with the detection cup in a through manner, the top of the sealing cover is provided with an air hood 5, the containing cavity is connected with the air hood in a through manner, the air hood is connected with a low pressure air compressor through a pipeline, and an air pressure valve and an air pressure gauge are further arranged between the air hood and the low pressure air compressor for controlling air pressure; the detection cup is characterized in that the containing cavity is used for placing a sensitive element 6, the sensitive element partially extends into the detection cup, sealing gaskets 7 are arranged between the sensitive element and the bottom of the containing cavity and between the sensitive element and the sealing covers, the detection cup is sealed and isolated from the air hood through the rotation of the sealing covers and the matching of the sealing gaskets, the detection cup and the air hood are isolated through the separation of the sensitive element, and when the sensitive element is intact, the two sides are not communicated.
The sealing seat, the sealing cover, the detection cup and the gas hood are made of 304 stainless steel, 316 stainless steel, brass H65 or brass H68, so that the service life is prolonged. The sealing gasket is made of vacuum rubber, so that stable vacuum degree is ensured. And for the convenience of observation, can be in detecting the bottom of the cup with the venthole setting, be provided with air cock 8 on the venthole, can also cooperate and use detection liquid for whether there is gas outgoing in the venthole of measurement detection cup, it is directly perceived reliable, detect that liquid is water, safe, be convenient for acquire, detect liquid setting in container 11.
When the device is used, two welding seams of laser welding and high-temperature brazing are adopted for detecting the air tightness between a metal flange of a zirconia oxygen measurement sensitive element and a tubular zirconia ceramic part, firstly, a sealing gasket is placed on a sealing seat, then, the zirconia oxygen measurement sensitive element is placed on the surface of the sealing gasket of the sealing seat, a tubular part penetrates through the sealing gasket and is placed in a detection cup, then, a second sealing gasket is placed on the surface of the metal flange, then, the sealing gasket is screwed and fixed, the two sealing gaskets and the zirconia oxygen measurement sensitive element are extruded and fixed by the sealing gasket after screwing and form sealing, the zirconia oxygen measurement sensitive element effectively divides the detection cup and the gas cover into two independent parts, then, a low-pressure air compressor is started, the pressure range of the low-pressure air compressor is 0-0.8 MPa, and the pressure of a pressure gauge is adjusted to the required test pressure: the method comprises the steps that 0.2MPa and the precision of a barometer are 0.001-0.5 MPa, then an air pressure valve is opened, compressed air is filled into an air hood, the compressed air cannot be blocked by a zirconia oxygen measurement sensitive element to detect the inside of a cup due to the fact that the zirconia oxygen measurement sensitive element is divided, the zirconia oxygen measurement sensitive element is in a sealed state, and when a leakage point exists in the zirconia oxygen measurement sensitive element, the compressed air can be blocked by the zirconia oxygen measurement sensitive element to detect the inside of the cup;
and (3) putting the air nozzle below the water surface, if gas leaks, generating bubbles, standing for 5min, and if no bubbles are generated, determining that the air nozzle is qualified.
To sum up, this device is small, convenient operation to the equipment is simple reliable, in the testing process, judges through the form of bubble, and the degree of difficulty is little, and the degree of accuracy is high.
The detection cup comprises a sleeve and a bottom plate, one end of the sleeve is connected with the sealing seat in a sealing mode, the other end of the sleeve is connected with the bottom plate in a sealing mode, the air outlet is formed in the bottom plate, the air faucet is connected with the bottom plate in a sealing mode, and the detection cup is prepared in a multi-component assembling mode, so that the processing difficulty is reduced, and the preparation cost is reduced.
As shown with reference to fig. 4. Specifically, in order to guarantee the use comfort level among the testing process, still be provided with fixed bolster 12 on the container, be provided with C type buckle 13 on the support, will detect the cup and detain and fix in C type buckle, stretch into the air cock and detect in the liquid, liberate both hands, laborsaving do not make mistakes.
The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (8)
1. The leak detection device for detecting the air tightness of the oxygen-measuring sensitive element of the zirconia is characterized by comprising a sealing seat and a sealing cover, wherein an accommodating groove is formed in the sealing seat, the sealing cover is spirally arranged on the sealing seat and matched with the accommodating groove to form an accommodating cavity, a detection cup is further arranged at the bottom of the sealing seat, an air outlet hole is formed in the detection cup, the accommodating cavity is communicated with the detection cup, an air hood is arranged at the top of the sealing cover, the accommodating cavity is communicated with the air hood, and the air hood is connected with a low-pressure air compressor through a pipeline;
the containing cavity is used for placing a sensitive element, the sensitive element partially extends into the detection cup, and sealing gaskets are arranged between the sensitive element and the bottom of the containing groove as well as between the sensitive element and the sealing cover.
2. The leak detection apparatus for detecting the airtightness of an oxygen sensing element for zirconia according to claim 1, wherein said air outlet is provided at the bottom of the detection cup, and said air outlet is provided with an air tap.
3. The leak detection apparatus for detecting the airtightness of an oxygen sensing element for zirconia according to claim 2, wherein the detection cup includes a sleeve and a bottom plate, one end of the sleeve is hermetically connected to the sealing seat, the other end of the sleeve is hermetically connected to the bottom plate, the air outlet is provided in the bottom plate, and the air tap is hermetically connected to the bottom plate.
4. The leak detection apparatus for detecting the airtightness of an oxygen sensing element of zirconia according to claim 1, wherein a barometric valve and a barometer are further provided between said gas cover and said low-pressure air compressor.
5. The leak detection apparatus for the airtightness detection of the zirconia oxygen sensor according to claim 1, further comprising a detection liquid for measuring whether or not gas is discharged from the gas outlet hole of the detection cup.
6. The leak detection apparatus for detecting the airtightness of a zirconia oxygen sensor according to claim 5, wherein the detection liquid is water, the detection liquid is provided in a container, and a fixing support is provided on the container.
7. The leak detection apparatus for detecting the airtightness of an oxygen sensor element by zirconia according to claim 1, wherein the material of said seal holder, said seal cap, said detection cup and said gas cap is 304 stainless steel, 316 stainless steel, brass H65 or brass H68.
8. The leak detection apparatus for the airtightness detection of the zirconia oxygen sensing element according to claim 1, wherein said seal is vacuum rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123179283.5U CN216746617U (en) | 2021-12-17 | 2021-12-17 | A leak hunting device that is used for zirconia to examine oxygen sensing element gas tightness to detect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123179283.5U CN216746617U (en) | 2021-12-17 | 2021-12-17 | A leak hunting device that is used for zirconia to examine oxygen sensing element gas tightness to detect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216746617U true CN216746617U (en) | 2022-06-14 |
Family
ID=81934834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123179283.5U Active CN216746617U (en) | 2021-12-17 | 2021-12-17 | A leak hunting device that is used for zirconia to examine oxygen sensing element gas tightness to detect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216746617U (en) |
-
2021
- 2021-12-17 CN CN202123179283.5U patent/CN216746617U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6857307B2 (en) | Method and device for the determination of the gas permeability of a container | |
| US8201438B1 (en) | Detection of gas leakage | |
| CN210863071U (en) | Valve sealing performance detection device | |
| CN103822765A (en) | Device for detecting air leakage rate of large-scale ventilating device | |
| JP2012047651A (en) | Leak detector | |
| US3939695A (en) | Apparatus for detecting leaks | |
| US6230549B1 (en) | Hand-held fuel cap leakage tester | |
| CN216746617U (en) | A leak hunting device that is used for zirconia to examine oxygen sensing element gas tightness to detect | |
| CN204479250U (en) | A kind of gas meter, flow meter gas transmission state seal performance pick-up unit | |
| CN115655599A (en) | Hydrogen-doped connection sealing element leakage detection and fatigue integrated experimental device and method | |
| CN104111150A (en) | Device for detecting airtightness of container detection port and detection method | |
| CN201262585Y (en) | Mechanical sealing gas-tight test detection device for pot | |
| JP2000154986A (en) | Method for detecting leakage of condenser and device therefor | |
| CN215066459U (en) | Pipeline methane sensor accuracy testing arrangement | |
| CN205940891U (en) | Rubber gas tightness detection device | |
| CN108827561A (en) | Safety valve testing equipment | |
| CN211626832U (en) | Pressure vessel leakage-proof defect detection device based on gas-liquid action | |
| CN210166094U (en) | Auxiliary device of pressure vessel detection equipment | |
| KR20040041996A (en) | Leakage testing apparatus for airtight container | |
| CN112067200A (en) | Pressure pipeline inspection and detection device | |
| US20210063331A1 (en) | Dilatometer | |
| JPH1019717A (en) | Apparatus and method for inspecting pressure of tank | |
| CN219161580U (en) | Airtight detection jig | |
| JPH07260541A (en) | Ullage measuring device for compressible fluid | |
| CN216410562U (en) | Pipe fitting negative pressure check out test set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |