CN104914221A - Gas sensor sealing device with gas buffer function - Google Patents
Gas sensor sealing device with gas buffer function Download PDFInfo
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- CN104914221A CN104914221A CN201510366162.1A CN201510366162A CN104914221A CN 104914221 A CN104914221 A CN 104914221A CN 201510366162 A CN201510366162 A CN 201510366162A CN 104914221 A CN104914221 A CN 104914221A
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- gas sensor
- gas
- external shell
- sensor
- circuit board
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Abstract
The invention discloses a gas sensor sealing device with a gas buffer function. The gas sensor sealing device comprises a gas sensor, a gas sensor circuit board, an external shell and a pinch plate, wherein the gas sensor is connected with the gas sensor circuit board; the bottom of the external shell is tightly connected with the pinch plate through a seal ring to form a sealed cavity; an air inlet pipe and an air outlet pipe are arranged at the left side and the right side of the external shell respectively in an airtight way; a sensor bracket and a circuit board bracket are arranged on the inner wall of the external shell; the gas sensor is arranged on the sensor bracket; an air inlet of the gas sensor is connected with the air inlet pipe through a hose; an air outlet of the gas sensor is communicated with the sealed cavity; the sealed cavity is communicated with the air outlet pipe; and the gas sensor circuit board is arranged on the circuit board bracket. According to the gas sensor sealing device, fixing and sealing functions of the gas sensor can be realized; the gas sensor sealing device has a gas buffer effect; the accuracy, the stability and the reliability of a monitoring system can be ensured to the greatest extent.
Description
Technical field
The invention belongs to gas sensor technical field, particularly relate to a kind of gas sensor packoff with gas buffer function.
Background technology
In commercial production, in on-line monitoring technique field that is toxic, that have dusty gas, usually need to follow gas No leakage, pollution-free principle detected in observation process, therefore, leak to prevent gas-monitoring and human body and environment are worked the mischief, often need design gas sensor packoff, the safety ensure murder by poisoning, having dusty gas to monitor and reliability.
At present, in order to ensure that sample gas forms pressure reduction in gas circuit, making sample gas can be steadily smooth in monitoring sensor, usually can configure buffer air chamber in gas circuit.Before testing, buffer air chamber and sensor seal can be evacuated, and open air valve during monitoring, make tested gas relatively smoothly pass through sensor, arrive buffer air chamber.But this design needs the design considering buffer air chamber and sensor seal two parts, adds the use amount of sealing and joint.
Summary of the invention
The object of the present invention is to provide a kind of gas sensor packoff with gas buffer function, it both can realize the fixing of gas sensor and sealing function, there is again gas buffer effect, precision, the Stability and dependability of monitoring system can be ensured to greatest extent.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of gas sensor packoff with gas buffer function is provided, this device comprises the gas sensor and gas sensor circuit board that are connected, this device also comprises external shell and buckle, the bottom of described external shell is tightly connected to form annular seal space by O-ring seal and buckle, the left and right sides of described external shell is sealed and installed with draft tube and escape pipe respectively, the inwall of described external shell is provided with sensor stand and circuit board support, described gas sensor is arranged on sensor stand, the air intake opening of described gas sensor is connected with draft tube by flexible pipe, the gas outlet of described gas sensor is communicated with annular seal space, described annular seal space is communicated with escape pipe, described gas sensor circuit plate is arranged on circuit board support.
By technique scheme, described sensor stand offers a pair elongated hole, described gas sensor is arranged in described elongated hole by bolt.
By technique scheme, the both sides of described circuit board support are provided with gathering sill, are provided with nylon block in described gathering sill, and the distance between described nylon block is regulated by adjustment bolt, and described gas sensor circuit plate is arranged between nylon block.
By technique scheme, the bottom of described external shell is provided with the seal groove of annular, is provided with O-ring seal in described seal groove.
By technique scheme, described external shell offers connection jaws, the outside of described connection jaws is sealed by glass capsulation joint.
By technique scheme, described external shell offers pressure sensor interface.
The beneficial effect that the present invention produces is: external shell and buckle are tightly connected to form annular seal space by this device, gas sensor and gas sensor circuit board are placed in annular seal space, to realize the sealing to gas sensor, simultaneously, sample gas enters in gas sensor through draft tube, flexible pipe, after having sampled, sample gas enters in annular seal space through the gas outlet of gas sensor, annular seal space can play the effect of buffering to sample gas, the sample gas in annular seal space flows out through escape pipe.The present invention both can sealing gas sensor, had again the function of buffer gas, which reduced the use of joint and sealing, add the safety and reliability of use, can ensure precision, the Stability and dependability of monitoring system to greatest extent.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is done furtherly, in accompanying drawing:
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the cut-open view along A-A line in Fig. 1;
Fig. 3 is the cut-open view along B-B line in Fig. 1;
Fig. 4 is the three-dimensional plot of the embodiment of the present invention;
Fig. 5 is the inner chamber three-dimensional plot of the embodiment of the present invention;
Fig. 6 is the three-dimensional plot of sensor stand.
In figure: 1-buckle, 2-connection jaws, 3-external shell, 4-pressure sensor interface, 5-draft tube, 6-escape pipe, 7-adjust bolt, 8-O-ring seal, 9-circuit board support, 901-gathering sill, 10-nylon block, 11-flexible pipe, 12-sensor stand, 1201-elongated hole, 13-gas sensor, 14-gas sensor circuit plate, 15-annular seal space.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1-Figure 3, a kind of gas sensor packoff with gas buffer function, this device comprises the gas sensor 13 and gas sensor circuit board 14 that are connected, also comprise external shell 3 and buckle 1, the bottom of external shell 3 is tightly connected to form annular seal space 15 by O-ring seal 8 and buckle 1, the left and right sides of external shell 3 is sealed and installed with draft tube 5 and escape pipe 6 respectively, the inwall of external shell 3 is provided with sensor stand 12 and circuit board support 9, gas sensor 13 is arranged on sensor stand 12, the air intake opening of gas sensor 13 is connected with draft tube 5 by flexible pipe 11, the gas outlet of gas sensor 13 is communicated with annular seal space 15, annular seal space 15 is communicated with escape pipe 6, gas sensor circuit plate 14 is arranged on circuit board support 9.
In a preferred embodiment of the invention, as shown in Figure 5, Figure 6, sensor stand 12 offers a pair elongated hole 1201, gas sensor 13 is arranged in elongated hole 1201 by bolt.By the installation site of adjusting bolt in elongated hole, can the front and back position of adjustments of gas sensor, make the air intake opening of gas sensor corresponding with the position of draft tube, be convenient to the installation of flexible pipe, in addition, flexible pipe has flexibility, the connection that can to a certain degree misalign, by the cooperation of elongated hole and flexible pipe, the air intake opening of gas with various sensor and the connection of draft tube can be realized, make to install more convenient.
In a preferred embodiment of the invention, as shown in Fig. 2, Fig. 5, the both sides of circuit board support 9 are provided with gathering sill 901, nylon block 10 is provided with in gathering sill 901, distance between nylon block 10 is regulated by adjustment bolt 7, gas sensor circuit plate 14 is arranged between nylon block 10, and wherein, gas sensor circuit plate is connected by draw-in groove with between nylon block.During installation, by gas sensor circuit board between two nylon blocks, then rotation adjustment bolt adjusts nylon block respectively, and nylon block is compressed and fixed gas sensor circuit board, and it is convenient to assemble.
In a preferred embodiment of the invention, as shown in Fig. 2, Fig. 3, Fig. 5, the bottom of external shell 3 is provided with the seal groove of annular, is provided with O-ring seal 8 in seal groove.
In a preferred embodiment of the invention, as shown in Figure 4, external shell 3 offers connection jaws 2, the outside of connection jaws 2 is sealed by glass capsulation joint, to prevent Leakage Gas, wherein, connection jaws is opened in front side or the rear side of external shell, and electric wire is connected with gas sensor by connection jaws.
In a preferred embodiment of the invention, as shown in Figure 4, external shell 3 offers pressure sensor interface 4, for fixation pressure sensor, when in this device, the pressure of gas-monitoring reaches set upper limit, pressure transducer can send a signal to controller, is expelled back into by gas and detects in body.Wherein, pressure sensor interface and connection jaws are arranged on the same side of external shell.
The present invention is applied in hyperchannel sulfur hexafluoride insulation electrical equipment on-line sampling monitoring system, as Figure 1-Figure 5, O-ring seal 6 is placed in the seal groove bottom external shell 3, then is interlocked compression by buckle 1, form the annular seal space 15 of whole gas sensor packoff.The left and right sides of external shell is sealed and installed with draft tube 5 and escape pipe 6 respectively.Sensor stand 12 and circuit board support 9 are fixedly mounted on the inwall boss of external shell 3, gas sensor 13 is arranged on sensor stand 12, sensor stand 12 has elongated hole 1201, bolt is configured with in elongated hole 1201, gas sensor 13 air intake opening can be realized corresponding with the position of draft tube 2, be convenient to the installation of flexible pipe 11, and flexible pipe 11 has flexibility, the connection that can to a certain degree misalign.Two pieces of nylon blocks 10 are configured in the gathering sill 901 of circuit board support 9, and two adjustment bolts 7 are also configured at circuit board support 9 both sides respectively, for regulating clamping gas sensor circuit plate 14.Connection jaws 2 is positioned at the sidewall of external shell 3, adopts the mode of mounting glass sealing adaptor on external shell to seal, to prevent Leakage Gas.Pressure sensor interface 4 is positioned at the sidewall of external shell, for being connected and fixed pressure transducer, when in this device, the pressure of sulfur hexafluoride gas reaches set upper limit, is expelled back into by sulfur hexafluoride gas in monitoring body.
During work, sulfur hexafluoride gas enters in gas sensor 13 through draft tube 5, flexible pipe 11, after having sampled, because the gas outlet of gas sensor 13 opens in whole annular seal space 15, directly sulfur hexafluoride gas is emitted in annular seal space, annular seal space because of its volume comparatively large, can have certain buffer action to gas, sulfur hexafluoride gas flows out through escape pipe 6 again.Annular seal space can seal gas sensor, buffer air chamber store sampled gas can be played again and ensure that sample gas flow velocity acts on stably, decrease the use of pipe joint and sealing simultaneously, ensure the monitoring accuracy of monitoring system, Stability and dependability to greatest extent.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (6)
1. one kind has the gas sensor packoff of gas buffer function, this device comprises the gas sensor and gas sensor circuit board that are connected, it is characterized in that, this device also comprises external shell and buckle, the bottom of described external shell is tightly connected to form annular seal space by O-ring seal and buckle, the left and right sides of described external shell is sealed and installed with draft tube and escape pipe respectively, the inwall of described external shell is provided with sensor stand and circuit board support, described gas sensor is arranged on sensor stand, the air intake opening of described gas sensor is connected with draft tube by flexible pipe, the gas outlet of described gas sensor is communicated with annular seal space, described annular seal space is communicated with escape pipe, described gas sensor circuit plate is arranged on circuit board support.
2. device according to claim 1, is characterized in that, described sensor stand offers a pair elongated hole, and described gas sensor is arranged in described elongated hole by bolt.
3. device according to claim 1, it is characterized in that, the both sides of described circuit board support are provided with gathering sill, are provided with nylon block in described gathering sill, distance between described nylon block is regulated by adjustment bolt, and described gas sensor circuit plate is arranged between nylon block.
4. device according to claim 1, is characterized in that, the bottom of described external shell is provided with the seal groove of annular, is provided with O-ring seal in described seal groove.
5. device according to claim 1, is characterized in that, described external shell offers connection jaws, and the outside of described connection jaws is sealed by glass capsulation joint.
6. device according to claim 1, is characterized in that, described external shell offers pressure sensor interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510366162.1A CN104914221A (en) | 2015-06-29 | 2015-06-29 | Gas sensor sealing device with gas buffer function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510366162.1A CN104914221A (en) | 2015-06-29 | 2015-06-29 | Gas sensor sealing device with gas buffer function |
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| CN104914221A true CN104914221A (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510366162.1A Pending CN104914221A (en) | 2015-06-29 | 2015-06-29 | Gas sensor sealing device with gas buffer function |
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| CN (1) | CN104914221A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353090A (en) * | 2015-11-30 | 2016-02-24 | 无锡拓能自动化科技有限公司 | Gas sensor calibration container capable of being sealed |
| CN108692755A (en) * | 2018-05-03 | 2018-10-23 | 佛山市川东磁电股份有限公司 | A kind of gas sensor sealing device |
Citations (6)
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| RU2013769C1 (en) * | 1991-04-23 | 1994-05-30 | Акционерное общество "КамАЗ" | Capacitive transducer |
| WO1999001761A1 (en) * | 1997-07-05 | 1999-01-14 | Osmetech Plc | Apparatus and methods for gas sampling |
| CN101726465A (en) * | 2009-12-25 | 2010-06-09 | 重庆大学 | Mini-array poisonous gas detecting instrument |
| CN102253171A (en) * | 2011-06-30 | 2011-11-23 | 中北大学 | Portable bionic electronic nose |
| CN104216424A (en) * | 2014-08-29 | 2014-12-17 | 湖南三德科技股份有限公司 | Precise flow controller for portable equipment |
| CN204758575U (en) * | 2015-06-29 | 2015-11-11 | 中冶南方工程技术有限公司 | Gas sensor sealing device with gaseous buffer function |
-
2015
- 2015-06-29 CN CN201510366162.1A patent/CN104914221A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2013769C1 (en) * | 1991-04-23 | 1994-05-30 | Акционерное общество "КамАЗ" | Capacitive transducer |
| WO1999001761A1 (en) * | 1997-07-05 | 1999-01-14 | Osmetech Plc | Apparatus and methods for gas sampling |
| CN101726465A (en) * | 2009-12-25 | 2010-06-09 | 重庆大学 | Mini-array poisonous gas detecting instrument |
| CN102253171A (en) * | 2011-06-30 | 2011-11-23 | 中北大学 | Portable bionic electronic nose |
| CN104216424A (en) * | 2014-08-29 | 2014-12-17 | 湖南三德科技股份有限公司 | Precise flow controller for portable equipment |
| CN204758575U (en) * | 2015-06-29 | 2015-11-11 | 中冶南方工程技术有限公司 | Gas sensor sealing device with gaseous buffer function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353090A (en) * | 2015-11-30 | 2016-02-24 | 无锡拓能自动化科技有限公司 | Gas sensor calibration container capable of being sealed |
| CN108692755A (en) * | 2018-05-03 | 2018-10-23 | 佛山市川东磁电股份有限公司 | A kind of gas sensor sealing device |
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Application publication date: 20150916 |
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