CN201464450U - Gas detection device on closed container - Google Patents
Gas detection device on closed container Download PDFInfo
- Publication number
- CN201464450U CN201464450U CN2009200753316U CN200920075331U CN201464450U CN 201464450 U CN201464450 U CN 201464450U CN 2009200753316 U CN2009200753316 U CN 2009200753316U CN 200920075331 U CN200920075331 U CN 200920075331U CN 201464450 U CN201464450 U CN 201464450U
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- Prior art keywords
- gas
- ring groove
- closed container
- annular
- flange
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Abstract
The utility model discloses a gas detection device on a closed container, which comprises a valve body and a valve core, wherein a large-diameter valve chamber, a small-diameter valve chamber and two annular grooves are arranged in the valve body, and an annular step is formed between the two annular grooves; the cylindrical surface of the valve core is movably connected with the inner peripheral surface of the small-diameter valve chamber in a sealing way, and a first annular flange is arranged at the back end of the valve core and is movably connected with the inner peripheral surface of the large-diameter valve chamber in a sealing way; and a second annular flange corresponding the annular step is arranged in the middle of the valve core, and a third annular groove is arranged on the cylindrical surface between the two annular flanges; and a sensor mounting hole is arranged in the annular groove. The detection device can prevent the leakage of gas in the closed container during the replacement of a sensor, and carry out the air supply, the air change, the calibration of detection meters and other operation on line; the detection device is used to alow the sensor to directly monitor the gas in the closed container, so that the detection data is real-time and reliable.
Description
Technical field
The utility model relates to a kind of gas-detecting device, particularly a kind of pick-up unit that detects gas in the closed container.
Background technology
In producing now, a lot of occasions need be with certain air seal in must the space, to reach the special result of use of this gas.As in power equipment, often need in combined electrical apparatus, seal a certain amount of SF6 gas, utilize SF6 gas good insulation performance and arc extinguishing, make the work that combined electrical apparatus can be safer.But in the SF6 high-voltage electrical equipment, when the gas phase liquid water content in the SF6 gas in the combined electrical apparatus acquired a certain degree, under electric arc or corona effect, SF6 decomposing gas thing can be through the hydrolysis reaction toxigenicity, equipment is produced chemical corrosion, have a strong impact on the normal operation of equipment then.Have, because the technology, the influences such as performance of air locking of assembling, there is certain leakage rate in high-tension apparatus again, when leakage rate surpasses index, causes the reduction of SF6 density, causes the reduction of gas-insulated performance, serious words even may cause security incident.Therefore accident or other the unusual generations in order to prevent usually will be carried out real-time detection and carry out maintenance works such as tonifying Qi, replacing, offline inspection the gas parameter in the airtight container (as combined electrical apparatus).
In at present to airtight container, in the detection method of gas, generally all be that sensor is directly installed in the airtight container, the gas in the airtight container detected by sensor.Or gas is outputed to the sampling air chamber by pipeline, detect gas in the indirect detection container by the gas of sensor to the sampling air chamber.But adopt these two kinds of methods to have two problems, the one, be directly installed on when monitoring on the airtight container at sensor, when sensor damages or other reasons needs dismounting, during replacing, often need airtight container is opened, the sensor that could change then, and airtight container is in opening procedure, troublesome poeration not only, if misoperation, also cause the leakage of gas in the airtight container easily, influence the normal operation of equipment, if particularly the gas of Guo Luing is toxic gas, also pollute the environment serious words even can have influence on the healthy of staff; The 2nd, by pipeline gas is outputed to the sampling air chamber, during gas, the data deviation of detection is big, detects the curve of cyclical fluctuations substantial deviation of data and real data, can not realize online measuring ability in the indirect detection container.
The utility model content
At above-mentioned the deficiencies in the prior art, the technical problems to be solved in the utility model provides the gas-detecting device on a kind of new closed container, adopt this gas-detecting device to detect the interior gas of closed container can prevent to take place gas when removal sensor, measuring instrument leakage, guarantee to detect the accuracy and the real-time of data.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
Gas-detecting device on a kind of closed container, it comprises: valve body, comprise a major diameter valve pocket and a minor diameter valve pocket in the described valve body, be provided with first ring groove and second ring groove between described major diameter valve pocket and the minor diameter valve pocket, be formed with a ring-shaped step between described first ring groove and second ring groove, described major diameter valve pocket open-ended; Spool, the cylinder of described spool is connected with the inner peripheral surface movable sealing of described minor diameter valve pocket, the front end of described spool stretches out described valve body, the rear end of described spool is provided with first annular flange flange, described first annular flange flange is connected with the inner peripheral surface movable sealing of described major diameter valve pocket, described spool middle part is provided with and corresponding second annular flange flange of described ring-shaped step, described second annular flange flange is connected with described ring-shaped step movable sealing, and the cylinder between described spool second annular flange flange and first annular flange flange is provided with the 3rd ring groove; The sensor mounting hole, it is open-ended to be communicated with in valve outer surface and with described first annular groove; Sensor is positioned at described sensor mounting hole; Self-styled valve is connected with described valve body, and the valve pocket of described self-styled valve is communicated with described second ring groove.
Preferably, the front end of described spool is provided with a push-and-pull block.
Preferably, described self-styled valve is provided with measuring instrument.
Preferably, the end of described valve body major diameter valve pocket is provided with ring flange.
Technique scheme has following beneficial effect: this gas-detecting device in use, at first the opening with valve body major diameter valve pocket is connected with closed container, and the gas in the closed container is entered in the valve body major diameter valve pocket.Because spool rear end first annular flange flange cooperates with the major diameter valve pocket movable sealing of valve body, second annular flange flange at spool middle part is connected with the annular boss movable sealing, such first ring groove, second ring groove just become sealed space toward each other, therefore, if just can not cause the leakage of gas when this moment the sensor in first ring groove, second ring groove or measuring instrument being changed.
When sensor or measuring instrument can operate as normal, only need move forward spool, first annular flange flange of spool and the major diameter valve pocket of valve body are broken away from, second annular flange flange and annular boss break away from, such first ring groove just is communicated with the major diameter valve pocket of valve body, second ring groove is communicated with first ring groove by the 3rd ring groove on the spool cylinder, gas in the closed container just can enter in first ring groove and second ring groove, is detected by the sensor in first ring groove, second ring groove or the measuring instrument state to gas.Therefore adopt the gas-detecting device of this structure can guarantee the gas safety that closed container is interior, and the dismounting sensor is also very convenient, saves the running time.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the structural representation of valve body among the utility model embodiment.
Fig. 3 is the structural representation that the utility model embodiment is connected with closed container.
Fig. 4 is the structural representation of Fig. 3 spool open mode.
The left view of Fig. 5 the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail.
As shown in Figure 1 and Figure 2, gas-detecting device on this closed container comprises a valve body 1 and spool 2, wherein valve body 1 comprises a major diameter valve pocket 11 and minor diameter valve pocket 12, between major diameter valve pocket 11 and minor diameter valve pocket 12, be provided with first ring groove 13 and second ring groove 14, form a ring-shaped step 15 between first ring groove 13 and second ring groove 14, valve body 1 major diameter valve pocket 11 open-ended also is connected with a ring flange 16.The cylinder of spool 2 is connected with minor diameter valve pocket 12 movable sealings, the front end of spool 2 stretches out valve body 1, and also be provided with a push-and-pull block 24 at its front end, the rear end of spool 2 is provided with first annular flange flange 21, first annular flange flange 21 is connected with major diameter valve pocket 11 movable sealings of valve body 1, the middle part of spool 2 is provided with and ring-shaped step 15 corresponding second annular flange flange 22, second annular flange flange 22 is connected with ring-shaped step 15 movable sealings, also is provided with the 3rd ring groove 23 on the spool cylinder between first annular flange flange 21 and second annular flange flange 22.
Valve body 1 is provided with the sensor mounting hole that is communicated with first ring groove 13, and the sensor mounting hole is open-ended on the outside surface of valve body 1, and sensor 4 is positioned at this sensor mounting hole.Also be provided with self-styled valve 3 on the valve body 1, the valve pocket of self-styled valve 3 is communicated with second ring groove 14 by through hole 31, and pick-up units such as instrument can be installed on the self-styled valve 3.
As shown in Figure 3, this gas-detecting device in use, at first the openend with the major diameter valve pocket 11 of valve body 1 is connected with closed container 5 by ring flange 16, gas in the closed container 5 is entered in the major diameter valve pocket 11. because first annular flange flange 21 of spool 2 rear ends is connected with major diameter valve pocket 11 movable sealings of valve body at this moment, second annular flange flange 22 at spool 2 middle parts is connected with annular boss 15 movable sealings, such first ring groove 13, second ring groove 14 just becomes each other sealed space relatively. therefore, if this moment is to first ring groove 13, sensor or measuring instrument in second ring groove 14 are changed, just can not cause the leakage of gas during detection.
When sensor, measuring instrument can operate as normal, only need move forward spool 2, make first annular flange flange 21 of spool 2 and major diameter valve pocket 11 disengagings of valve body 1, second annular flange flange 22 breaks away from (position as shown in Figure 4) with annular boss 15, such first ring groove 13 just is communicated with the major diameter valve pocket 11 of valve body, and second ring groove 14 is communicated with first ring groove 13 by the 3rd ring groove 23 on the spool cylinder.Gases in this moment closed container 5 just can enter in first ring groove 13 and second ring groove 14, are detected by the interior sensor 4 of first ring groove 13, second ring groove 14 or the measuring instrument state to gas.And can be by carrying out operations such as tonifying Qi, ventilation and verification measuring instrument in 3 pairs of closed containers 5 of self-styled valve.
Wherein self-styled valve and number of sensors can be set according to actual needs, and as shown in Figure 5, valve body 1 is provided with two self-styled valves in the present embodiment, can the installation and measuring instrument on one of them self-styled valve, the gas in the valve body is detected.Another self-styled valve can be used for the gas in the airtight container carried out operations such as tonifying Qi, ventilation and verification measuring instrument.The position of sensor and self-styled valve can exchange, and promptly the valve pocket of self-styled valve is communicated with first ring groove, and the sensor mounting hole is communicated with second ring groove.Adopt the gas-detecting device of this structure can guarantee the gas safety that closed container is interior, and the dismounting sensor is also very convenient, saves the running time.
More than gas-detecting device on a kind of closed container that the utility model embodiment is provided be described in detail, this instructions should not be construed as restriction of the present utility model.For one of ordinary skill in the art, all any changes of being made according to the utility model design philosophy are all within protection domain of the present utility model.
Claims (4)
1. the gas-detecting device on the closed container is characterized in that it comprises:
Valve body, comprise a major diameter valve pocket and a minor diameter valve pocket in the described valve body, be provided with first ring groove and second ring groove between described major diameter valve pocket and the minor diameter valve pocket, be formed with a ring-shaped step between described first ring groove and second ring groove, described major diameter valve pocket open-ended;
Spool, the cylinder of described spool is connected with the inner peripheral surface movable sealing of described minor diameter valve pocket, the front end of described spool stretches out described valve body, the rear end of described spool is provided with first annular flange flange, described first annular flange flange is connected with the inner peripheral surface movable sealing of described major diameter valve pocket, described spool middle part is provided with and corresponding second annular flange flange of described ring-shaped step, described second annular flange flange is connected with described ring-shaped step movable sealing, and the cylinder between described spool second annular flange flange and first annular flange flange is provided with the 3rd ring groove;
The sensor mounting hole, it is open-ended to be communicated with in valve outer surface and with described first annular groove;
Sensor is positioned at described sensor mounting hole;
Self-styled valve is connected with described valve body, and the valve pocket of described self-styled valve is communicated with described second ring groove.
2. the gas-detecting device on the closed container according to claim 1 is characterized in that: the front end of described spool is provided with a push-and-pull block.
3. the gas-detecting device on the closed container according to claim 1 is characterized in that: described self-styled valve is provided with measuring instrument.
4. the gas-detecting device on the closed container according to claim 1 is characterized in that: the end of described valve body major diameter valve pocket is provided with ring flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200753316U CN201464450U (en) | 2009-07-27 | 2009-07-27 | Gas detection device on closed container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200753316U CN201464450U (en) | 2009-07-27 | 2009-07-27 | Gas detection device on closed container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201464450U true CN201464450U (en) | 2010-05-12 |
Family
ID=42391800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200753316U Expired - Lifetime CN201464450U (en) | 2009-07-27 | 2009-07-27 | Gas detection device on closed container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201464450U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893115A (en) * | 2010-07-13 | 2010-11-24 | 浙江工业大学 | Novel leak test valve |
| CN105972252A (en) * | 2016-06-24 | 2016-09-28 | 广州白云电器设备股份有限公司 | Inflation valve seat capable of being used for online correcting meter |
-
2009
- 2009-07-27 CN CN2009200753316U patent/CN201464450U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893115A (en) * | 2010-07-13 | 2010-11-24 | 浙江工业大学 | Novel leak test valve |
| CN101893115B (en) * | 2010-07-13 | 2012-05-23 | 浙江工业大学 | Novel leak test valve |
| CN105972252A (en) * | 2016-06-24 | 2016-09-28 | 广州白云电器设备股份有限公司 | Inflation valve seat capable of being used for online correcting meter |
| CN105972252B (en) * | 2016-06-24 | 2019-02-01 | 广州白云电器设备股份有限公司 | A kind of inflation valve seat can be used for online calibration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |
|
| CX01 | Expiry of patent term |