CN105353090A - Gas sensor calibration container capable of being sealed - Google Patents
Gas sensor calibration container capable of being sealed Download PDFInfo
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- CN105353090A CN105353090A CN201510850858.1A CN201510850858A CN105353090A CN 105353090 A CN105353090 A CN 105353090A CN 201510850858 A CN201510850858 A CN 201510850858A CN 105353090 A CN105353090 A CN 105353090A
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- cover plate
- side cover
- main cavity
- gas sensor
- gas
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Abstract
The invention discloses a gas sensor calibration container capable of being sealed. The gas sensor calibration container comprises a main cavity body, a left side cover plate and a right side cover plate. The main cavity body is provided with a pressure sensor and a gas sensor; the left side cover plate and the right side cover plate are fixedly connected with the main cavity body through bolts and elastic sealing rings in a sealed mode. The cross section of each elastic sealing ring is in a U shape, and each U-shaped cross section comprises a slope, an arc-shaped face and a U-shaped groove. The matching face of the left side cover plate and the main cavity body and the matching face of the right side cover plate and the main cavity body are provided with second bosses and grooves respectively. The two end faces of the main cavity body are provided with first bosses and grooves respectively. The slopes of the elastic sealing rings can be matched with the first bosses in a sealed mode. The U-shaped grooves of the elastic sealing rings can be matched with the second bosses in a sealed mode. The tail end of a gas outlet pipeline is connected with a recovery bottle. By the adoption of the structure, sealing performance and abrasion resistance are good, poor sealing can be found in time, and the container is more suitable for calibrating low-concentration gas and poisonous gas.
Description
Technical field
The present invention relates to a kind of servicing unit when gas sensor is produced and uses, particularly a kind of gas sensor calibration container that can seal.
Background technology
What carry out measuring general to material concentration with sensor is incidence relation between sensor response and test substance concentration.And the zero point of sensor and sensitivity are in use inevitably drifted about.In order to obtain measured value more accurately, before generally all requiring measurement, sensor is demarcated.
Demarcate and need to measure sensor with the standard substance of concentration known, for liquid, solid matter, the acquisition of standard substance concentration is relatively easy, and generally weighed by analytical balance in laboratory, volumetric flask constant volume just can be accomplished.
And Demarcate Gas, be substantially the value that produces using a kind of high precision apparatus as the ruler of tolerance, be input in sensor to be calibrated, obtain the output quantity of sensor, then by mathematical method, obtain the corresponding relation between sensor constrained input.The demarcation of gas sensor, sensor, as input value, is put into the airtight container being filled with calibrating gas and is demarcated it by the known calibrating gas of normal working concentration.
US Patent No. 4829809 (Citytech1989) discloses a kind of gas electrolytic analysis apparatus and method, one electrochemical sensor is placed in the cavity of known volume by it, first in cavity, pass into the gas to be measured of unknown concentration, cavity is closed by timing signal, because sensor consumes gas, its response is constantly reduced, according to Farady law, its electric current is decayed with exponential form, according to sensor current change curve in time, sensor initial response electric current, cavity volume can solve transducer sensitivity and gas concentration.
Above-mentioned patent provides a kind of without the need to knowing that transducer sensitivity just can the method for measure gas concentrations, but still needs the cavity being equipped with a kind of sealing.
Therefore visible, the sealing of container seems and is even more important.
At present, in existing gas sensor calibration instrument, the normal bonding jelly that adopts pastes instrument main cavity and remaining part, and bonding jelly has certain influence to gas concentration, and sealing effectiveness is bad, and this makes the demarcation of light concentration gas there is larger difficulty.In addition, existing calibrating instrument cannot reclaim gas mostly, and the marked gas be discharged in air can pollute air, even impacts demarcation the healthy of personnel.
So, for the shortcoming of existing calibrating instrument, be necessary to develop a kind of new gas sensor calibration container, while promoting instrument sealing, accomplish the protection to environment and staff.
Application number disclosed in Dec 31 in 2014 is No. 201420505880.3 Chinese invention patents, and the name of its innovation and creation is called " gas sensor calibration container ", and it comprises main cavity, left side cover plate, right side cover plate, and two cover plates are positioned at the two ends of main cavity; Left side cover plate is fixed with threeway; One end of threeway is air intake opening, and air intake opening is provided with air intake opening non-return valve; One end is gas outlet, left side cover plate offers three through holes, and gas outlet is communicated with main cavity by three through holes; One end is connected with densitometer; Right side cover plate is fixed with insulating disc and two-way; Insulating disc runs through multiple binding post, one end of binding post is positioned at main cavity inside, and one end is positioned at insulating disc outside; Right side cover plate offers through hole, and one end of this two-way is communicated with main cavity by through hole, and the other end is connected with aspiration pump, two-way is provided with gas outlet non-return valve; Aspiration pump is communicated with returnable bottle.
Although above-mentioned patented claim avoids the use of bonding jelly, and can to waste gas recovery.But, when the sealing of left side cover plate, right side cover plate and main cavity, mainly have employed O-ring seal, commercially available O-ring seal elasticity is little, anti-wear performance is poor, use after a period of time, easily wearing and tearing or aging, when wearing and tearing or aging after, not easily realize, easily cause demarcation seal of vessel performance poor, easily leak gas, be not suitable for the demarcation of light concentration gas and toxic gas.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, and a kind of gas sensor calibration container that can seal is provided, the gas sensor calibration container that this can seal have employed elastic seal ring, sealing and anti-wear performance good, and energy Timeliness coverage poor sealing situation, be more suitable for the demarcation of light concentration gas and toxic gas.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of gas sensor calibration container that can seal, comprise the main cavity of both ends open, be separately positioned on the left side cover plate of main cavity both sides and right side cover plate, gas inlet line on the cover plate of left side, right side cover plate is provided with gas exit line, gas sensor is provided with in main cavity, main cavity is also provided with pressure transducer, pressure transducer and gas sensor all be positioned at the computing machine demarcated outside container and be connected; Described left side cover plate and right side cover plate are all sealedly and fixedly connected by bolt and elastic seal ring and main cavity, the xsect of described elastic seal ring is U-shaped, a bottom outside corner of U-shaped xsect is provided with inclined-plane, and a free end of U-shaped xsect is provided with arcwall face; The mating surface of described left side cover plate and right side cover plate and main cavity is provided with the second boss and groove, the both ends of the surface of main cavity are also provided with the first boss and groove; The inclined-plane of elastic seal ring can be sealed and matched with the first boss, and the U-type groove of elastic seal ring can be sealed and matched with the second boss; The tail end of described gas exit line is connected with returnable bottle.
The angle that described inclined-plane and surface level are is 30-45 degree angle.
Described pressure transducer and gas sensor all be positioned at the computing machine infrared radio demarcated outside container and be connected.
Described right side cover plate is provided with insulating disc, insulating disc is provided with the binding post run through, described pressure transducer is all connected with computing machine by binding post with gas sensor.
The surface of described elastic seal ring is coated with silica gel investment precoat.
After the present invention adopts said structure, there is following beneficial effect:
1. inclined design in above-mentioned elastic seal ring, can make the first boss on elastic seal ring and main cavity form linear sealing structure, and inclined-plane pressurized can effectively prevent gas from entering main cavity from the position of elastic seal ring pressurized, and sealing effectiveness is reliable; Wherein arcwall face design, effectively can solve main cavity and left side cover plate or right side cover plate bolt when being fixed and clamped, elastic seal ring is because of the uneven generation deformation that is stressed, and the problem that the slight gap brought causes main cavity to leak gas; Effectively improve sealing effectiveness; In addition, the design of U-type groove, easy to assembly, ensure in assembling process, there will not be upset, distortion, ensure pressure surface planarization.In addition, the setting of silica gel investment precoat, makes elastic seal ring more wear-resisting.
2. the setting of above-mentioned pressure transducer, by detecting the change of pressure in main cavity, thus monitors the sealing property of demarcation container and gives warning in advance.
3. the setting of above-mentioned returnable bottle, can reclaim waste gas, accomplishes the protection to environment and staff simultaneously.
4. above-mentioned pressure transducer and gas sensor are all connected with computing machine infrared radio, avoid the leakage problem that threading causes, and further ensure the sealing property of demarcating container.
Accompanying drawing explanation
Fig. 1 shows the structural representation of a kind of gas sensor calibration container that can seal of the present invention;
Fig. 2 shows the structural representation of elastic seal ring xsect;
Fig. 3 shows the schematic cross-section that elastic seal ring and main cavity and left side cover plate or right side cover plate match.
Wherein have:
1. main cavity;
11. first boss; 12. grooves;
2. cover plate on the left of;
21. second concave stations; 22. gas inlet line;
3. cover plate on the right side of; 31. gas exit line;
4. pressure transducer;
5. elastic seal ring;
51. inclined-planes; 52.U type groove; 53. arcwall faces;
6. gas sensor;
7. returnable bottle.
Embodiment
Below in conjunction with accompanying drawing and concrete better embodiment, the present invention is further detailed explanation.
As shown in Figure 1, a kind of gas sensor calibration container that can seal, comprises the main cavity 1 of both ends open, is separately positioned on left side cover plate 2 and the right side cover plate 3 of main cavity 1 both sides.
Gas inlet line on the cover plate of left side, right side cover plate is provided with gas exit line.Be connected with returnable bottle preferably by gas check valve at the tail end of gas exit line.
In addition, the mating surface of left side cover plate and right side cover plate and main cavity is provided with the second boss and groove, the both ends of the surface of main cavity are also provided with the first boss and groove.
Be provided with gas sensor and pressure transducer in main cavity, pressure transducer and gas sensor all be positioned at the computing machine demarcated outside container and be connected.
Preferably have the following two kinds connected mode:
1. pressure transducer and gas sensor all be positioned at the computing machine infrared radio demarcated outside container and be connected.This sample loading mode, the leakage problem that threading can be avoided to cause, further ensures the sealing property of demarcating container.The application preferably adopts this kind of mode.
2. on the cover plate of right side, be provided with insulating disc, insulating disc is provided with the binding post run through, pressure transducer is all connected with computing machine by binding post with gas sensor.
As shown in figures 1 and 3, left side cover plate and right side cover plate are all sealedly and fixedly connected by bolt and elastic seal ring and main cavity.
As shown in Figure 2, the xsect of elastic seal ring is U-shaped, and the surface of elastic seal ring is coated with silica gel investment precoat.
A bottom outside corner of U-shaped xsect is provided with inclined-plane, and the angle that inclined-plane and surface level are is preferably 30-45 degree angle.
A free end of U-shaped xsect is provided with arcwall face.
The inclined-plane of elastic seal ring can be sealed and matched with the first boss, and the U-type groove of elastic seal ring can be sealed and matched with the second boss.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple equivalents to technical scheme of the present invention, these equivalents all belong to protection scope of the present invention.
Claims (5)
1. the gas sensor calibration container that can seal, comprise the main cavity of both ends open, be separately positioned on the left side cover plate of main cavity both sides and right side cover plate, gas inlet line on the cover plate of left side, right side cover plate is provided with gas exit line, gas sensor is provided with in main cavity, it is characterized in that: main cavity is also provided with pressure transducer, pressure transducer and gas sensor all be positioned at the computing machine demarcated outside container and be connected; Described left side cover plate and right side cover plate are all sealedly and fixedly connected by bolt and elastic seal ring and main cavity, the xsect of described elastic seal ring is U-shaped, a bottom outside corner of U-shaped xsect is provided with inclined-plane, and a free end of U-shaped xsect is provided with arcwall face; The mating surface of described left side cover plate and right side cover plate and main cavity is provided with the second boss and groove, the both ends of the surface of main cavity are also provided with the first boss and groove; The inclined-plane of elastic seal ring can be sealed and matched with the first boss, and the U-type groove of elastic seal ring can be sealed and matched with the second boss; The tail end of described gas exit line is connected with returnable bottle.
2. the gas sensor calibration container that can seal according to claim 1, is characterized in that: the angle that described inclined-plane and surface level are is 30-45 degree angle.
3. according to claim 1 can the gas sensor calibration container of sealing, it is characterized in that: described pressure transducer and gas sensor all be positioned at the computing machine infrared radio demarcated outside container and be connected.
4. the gas sensor calibration container that can seal according to claim 1, it is characterized in that: described right side cover plate is provided with insulating disc, insulating disc is provided with the binding post run through, described pressure transducer is all connected with computing machine by binding post with gas sensor.
5. the gas sensor calibration container that can seal according to claim 1, is characterized in that: the surface of described elastic seal ring is coated with silica gel investment precoat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510850858.1A CN105353090B (en) | 2015-11-30 | 2015-11-30 | Gas sensor calibration container capable of being sealed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510850858.1A CN105353090B (en) | 2015-11-30 | 2015-11-30 | Gas sensor calibration container capable of being sealed |
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| Publication Number | Publication Date |
|---|---|
| CN105353090A true CN105353090A (en) | 2016-02-24 |
| CN105353090B CN105353090B (en) | 2017-04-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510850858.1A Active CN105353090B (en) | 2015-11-30 | 2015-11-30 | Gas sensor calibration container capable of being sealed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974062A (en) * | 2016-06-03 | 2016-09-28 | 中国矿业大学 | Gas sensor calibration device and calibration method thereof |
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| GB1179702A (en) * | 1966-05-26 | 1970-01-28 | Angus George Co Ltd | Improvements relating to Seals for use in High-Pressure Apparatus |
| GB1385882A (en) * | 1971-09-17 | 1975-03-05 | Bal Ltd | Seal assemblies |
| US4161320A (en) * | 1973-05-07 | 1979-07-17 | Chemprene, Inc. | Resilient packing |
| SU836427A1 (en) * | 1979-03-30 | 1981-06-07 | Предприятие П/Я А-1233 | Thin-walled vessel neck seal |
| CA2406103C (en) * | 2000-05-31 | 2009-12-22 | Horton, Inc. | Dust seal |
| JP2002178942A (en) * | 2000-12-11 | 2002-06-26 | Eaton Hydraulics Co Ltd | Seal structure for hydraulic control device |
| JP2004183799A (en) * | 2002-12-04 | 2004-07-02 | Kayaba Ind Co Ltd | Seal structure of sliding part |
| CN2736606Y (en) * | 2004-10-19 | 2005-10-26 | 徐州车氏密封有限公司 | U shaped slide ring seal ring with convex lips |
| CN1916599A (en) * | 2005-08-18 | 2007-02-21 | 北京均方理化科技研究所 | Apparatus for calibrating gas detector in site, and method of gas distribution |
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| CN105974062A (en) * | 2016-06-03 | 2016-09-28 | 中国矿业大学 | Gas sensor calibration device and calibration method thereof |
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| Publication number | Publication date |
|---|---|
| CN105353090B (en) | 2017-04-12 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Le Mingzhong Inventor after: Li Chaoyang Inventor before: Xue Xiaogang Inventor before: Chen Hua Inventor before: Zhang Binwei |
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| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170316 Address after: 510000 Panyu District Province, Guangzhou City, Tai Lung Street, tea East Village Tea Road, No. 34, No. two, No. Applicant after: Guangzhou Kraus laboratory equipment Co. Ltd. Address before: 214101 Wuxi Province, the Yangtze River Road, New District, No. 7, Jiangsu science and Technology Park, block No. two, room No. 502, room Applicant before: TuoNeng Automation Technology (Wuxi) Co., Ltd. |
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Address after: 511400 room 508, Tian'an entrepreneurship center, No. 555, North Panyu Avenue, Donghuan street, Panyu District, Guangzhou City, Guangdong Province Patentee after: Guangdong Klaus Laboratory System Technology Co.,Ltd. Address before: 510000 No. 34-2, CHADONG Road, Chadong village, Dalong street, Panyu District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU CLAUS LABORATORY EQUIPMENT CO.,LTD. |
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