CN105571786A - Gas leakage detection device - Google Patents
Gas leakage detection device Download PDFInfo
- Publication number
- CN105571786A CN105571786A CN201510909162.1A CN201510909162A CN105571786A CN 105571786 A CN105571786 A CN 105571786A CN 201510909162 A CN201510909162 A CN 201510909162A CN 105571786 A CN105571786 A CN 105571786A
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- CN
- China
- Prior art keywords
- gas
- air inlet
- draft tube
- electrochemical
- gas sensor
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- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/27—Association of two or more measuring systems or cells, each measuring a different parameter, where the measurement results may be either used independently, the systems or cells being physically associated, or combined to produce a value for a further parameter
Abstract
The invention discloses a gas leakage detection device, which comprises a gas detector. The gas detector is connected with an air inlet pipe and an air outlet pipe, wherein the air inlet pipe and the air outlet pipe are connected with a detection box in the gas detector. The detection box is internally provided with electrochemical gas sensors for detecting the air; the electrochemical gas sensors are connected with a signal processor; the signal processor is connected with a displayer; the air inlet pipe is provided with an air pump; an air inlet mouth end portion of the air inlet pipe is in taper shape, the large end of which faces outwards; the mouth edge of the air inlet mouth end portion is provided with a rubber sealing strip; the air inlet mouth end portion is provided with a fixation device for fixing the air inlet mouth; and the fixation device is a pair of symmetrically-arranged semicircular spring pieces, wherein the free ends of the two semicircular spring pieces are engaged mutually. Compared with the prior art, the gas leakage detection device has the following beneficial effects: the device can be used for detecting a plurality of gases, thereby saving device investment; and the fixation device at the air inlet mouth end portion can fix the air inlet mouth to the outer wall of a pipeline, thereby facilitating to finish detection.
Description
Technical field
The present invention relates to a kind of gas leak detection apparatus.
Background technology
The method mainly instrumental method of traditional detection harmful gas, as vapor-phase chromatography, spectrophotometric method, fluorimetry, optical interferometry etc.Traditional harmful gas detection method needs the on-line monitoring system of complexity by means of large-sized analytic instrument or costliness, and cost is high, length consuming time, is difficult to large-scale application.
Gas detecting instrument is a kind of instrument and meter instrument of gas leakage Concentration Testing, mainly refers to portable/handheld gas detecting instrument.Mainly utilize gas sensor to carry out the gaseous species existed in testing environment, gas sensor is used to detect the composition of gas and the sensor of content.It is generally acknowledged, the definition of gas sensor is to detect target for basis of classification, and that is, every sensor for detecting gas ingredients and concentration is all called gas sensor, and no matter it is with physical method, still chemically.
Chinese patent, application number is) application number 201010594132.3, disclosed a kind of SF6 gas leak detection gas collection detector, comprise detector main frame, the top installation data line of detector main frame, probe is installed in one end of data line, conical cover body is installed in the periphery of probe, the smaller diameter end of cover body is connected with probe, the larger diameter end of cover body arranges elastic seal ring, elastic seal ring is the conical O-ring seal be made up of the sheet rubber that polylith is trapezoidal, and the narrow end of every block sheet rubber is connected with cover body, partly overlaps between wantonly two pieces of adjacent sheet rubbers.
For realizing object of the present invention further, can also realize by the following technical solutions: the periphery of cover body is provided with fixed disc, fixed disc installs three hold-down mechanisms, and three hold-down mechanisms are circularly and evenly distributed; Hold-down mechanism is connected and composed by sleeve pipe, spring, universal joint and electromagnet, and sleeve pipe is flexibly connected with fixed disc, and the periphery, rear portion of sleeve pipe arranges limit convex edge, the periphery mounting spring of sleeve pipe, and spring is between limit convex edge and fixed disc; Universal joint is installed in the front end of sleeve pipe, and electromagnet installed by universal joint; Cover body installs power supply, power supply installs switch, power supply is connected with three electromagnet respectively by three wires.Sucker is installed at the rear portion of detector main frame.
Although it has following beneficial effect: it installs cover body additional outside the probe of existing detector, utilize conical cover body, when detecting, tested equipment surface is formed an enclosure space, probe detects the SF6 gas concentration in this enclosure space, prevent outside air from impacting tested part as far as possible, thus effectively can improve accuracy of detection, reduce loss; Cover body also can prevent probe and tested equipment from directly touching, and probe effectively can be prevented contaminated, extend the serviceable life of probe, and improve accuracy of detection.One end that it contacts with equipment at cover body arranges elastic seal ring, cover body can be made to contact with by equipment more tight, more effectively form sealed space, prevent the impact of external environment.Its cover body installs hold down gag, manually need not apply snap-in force to cover body, can one man operation be realized, save human resources, increase work efficiency.The present invention also has structure advantage simple, cheap for manufacturing cost, safe and convenient to use.
But there is requirement on the surface of its attachment, if surface ratio is more tortuous, just cannot adheres to, affect monitoring accuracy.
Chinese patent, application number is: 201010044416.5, disclose a kind of continuous type alcohol content tester, comprise gas sample pipeline, signal processing module, power module, control circuit, display circuit and display device, it is characterized in that, also comprise drawing-in type fuel cell type alcohol sensor and continuous air pump, this drawing-in type fuel cell type alcohol sensor comprises the shell without diffusion hole, be located at the reaction chamber in this shell and sensitive element, this reaction chamber is provided with gas outlet and air intake opening, aspirate by this air intake opening the gas that enters in this reaction chamber contact generation current signal with this sensitive element and be drawn out to described signal processing module by the electrode of this sensitive element, the air intake opening of this drawing-in type fuel cell type alcohol sensor is communicated with gas sample pipeline, extraneous gas to be sampled can be extracted, the gas outlet of this drawing-in type fuel cell type alcohol sensor connects the air intake opening of described continuous air pump, and the exhausr port of this continuous air pump is communicated with extraneous, this alcohol content tester running hours, control circuit controls described continuous air pump, the air intake opening of this continuous air pump carries out continuous air extraction, gas sampled enters to react from the air intake opening of described drawing-in type fuel cell type alcohol sensor, reacted gas sampled enters described continuous air pump from the gas outlet of described drawing-in type fuel cell type alcohol sensor, then discharges continuously from the exhausr port of described continuous air pump.
Although it has following beneficial effect: the present invention can sample gas continuously and analyze, improve testing efficiency; Can also accurately sample and analyze, facilitate user both can detect fast, can high precision test be carried out again; Can show by the form of numerical value or word the gas concentration testing result detected, can also the form such as curve, figure be passed through, the reaction signal of display sensor output in real time continuously; Can alarm limit be set, point out with acousto-optic after the reaction signal of measurement result or sensor exceedes alarm limit.
But it does not have the structure can carrying out adhering to, so can not adapt to all detection site.
Summary of the invention
The present invention needs the problem solved to be for above-mentioned the deficiencies in the prior art, and provides a kind of gas leak detection apparatus.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of gas leak detection apparatus, comprise gas detecting instrument, gas detecting instrument is connected with draft tube and escape pipe, draft tube and escape pipe are connected with the detection box of gas detecting instrument inside respectively, detect in box the electrochemical gas sensor be provided with for detecting air, the quantity of electrochemical gas sensor is at least two, electrochemical gas sensor is connected with signalling means processor, signalling means processor is connected with display, draft tube is provided with air pump, the gas inlet end structure of draft tube is tapered, large end outwardly, the opening's edge place of gas inlet end structure is provided with rubber weather strip, gas inlet end structure is provided with the stationary installation for fixing air intake opening, described stationary installation is a pair symmetrically arranged semicircular spring leaf, the free end of two semicircular spring leafs engages each other.
Described electrochemical gas sensor is NH
3electrochemical gas sensor, H
2s electrochemical gas sensor, SO
2electrochemical gas sensor and NO
2in electrochemical gas sensor any two or more.
Draft tube is that elastomeric material is made.
Described air pump is Minitype vibration diaphragm air pump or drum pump.
Gas detecting instrument is provided with the tube rolling device for rolling draft tube.
Compared with prior art, the invention has the beneficial effects as follows:
(1) quantity of electrochemical gas sensor is at least two, may be used for detecting multiple gases, saves equipment investment;
(2) draft tube is provided with air pump, can initiatively draw gas to be measured, convenient detection;
(3) gas inlet end structure of draft tube is tapered, and outwardly, the opening's edge place of gas inlet end structure is provided with rubber weather strip to large end, can ensure impermeability;
(4) gas inlet end structure is provided with the stationary installation for fixing air intake opening, described stationary installation is a pair symmetrically arranged semicircular spring leaf, the free end of two semicircular spring leafs engages each other, air intake opening can be fixed on the outer wall of pipeline by two intermeshing semicircular spring leafs, conveniently complete detection.
Accompanying drawing explanation
Fig. 1 is the structural representation of gas leak detection apparatus of the present invention;
Wherein, 1, gas detecting instrument, 2, draft tube, 3, escape pipe, 4, detect box, 5, electrochemical gas sensor, 6, signalling means processor, 7, display, 8, air pump, 9, gas inlet end structure, 10, stationary installation, 11, tube rolling device.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
As shown in Figure 1, a kind of gas leak detection apparatus, comprise gas detecting instrument 1, gas detecting instrument 1 is connected with draft tube 2 and escape pipe 3, draft tube 2 and escape pipe 3 are connected with the detection box 4 of gas detecting instrument 1 inside respectively, detect in box 4 electrochemical gas sensor 5 be provided with for detecting air, the quantity of electrochemical gas sensor 5 is at least two, electrochemical gas sensor 5 is connected with signalling means processor 6, signalling means processor 6 is connected with display 7, draft tube 2 is provided with air pump 8, the gas inlet end structure 9 of draft tube 2 is tapered, large end outwardly, the opening's edge place of gas inlet end structure 9 is provided with rubber weather strip, gas inlet end structure 9 is provided with the stationary installation 10 for fixing air intake opening, described stationary installation 10 is a pair symmetrically arranged semicircular spring leaf, the free end of two semicircular spring leafs engages each other.
Described electrochemical gas sensor 5 is NH
3electrochemical gas sensor, H
2s electrochemical gas sensor, SO
2electrochemical gas sensor and NO
2in electrochemical gas sensor any two or more.
Draft tube 2 is made for elastomeric material, good toughness, convenient bending, not fragile.
Described air pump 8 is Minitype vibration diaphragm air pump or drum pump.
Gas detecting instrument 1 is provided with the tube rolling device 11 for rolling draft tube 2, the length of draft tube 2 is long, can pass through tube rolling device 11 rolling, because pipeline distribution is closeer, some place fails to lay down gas detecting instrument 1, and the length of draft tube 2 is longer conveniently to be detected the pipeline in these places.
Compared with prior art, the invention has the beneficial effects as follows:
(1) quantity of electrochemical gas sensor is at least two, may be used for detecting multiple gases, saves equipment investment;
(2) draft tube is provided with air pump, can initiatively draw gas to be measured, convenient detection;
(3) gas inlet end structure of draft tube is tapered, and outwardly, the opening's edge place of gas inlet end structure is provided with rubber weather strip to large end, can ensure impermeability;
(4) gas inlet end structure is provided with the stationary installation for fixing air intake opening, described stationary installation is a pair symmetrically arranged semicircular spring leaf, the free end of two semicircular spring leafs engages each other, air intake opening can be fixed on the outer wall of pipeline by two intermeshing semicircular spring leafs, conveniently complete detection.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on instructions, must determine its technical scope according to right.
Claims (5)
1. a gas leak detection apparatus, it is characterized in that: comprise gas detecting instrument, gas detecting instrument is connected with draft tube and escape pipe, draft tube and escape pipe are connected with the detection box of gas detecting instrument inside respectively, detect in box the electrochemical gas sensor be provided with for detecting air, the quantity of electrochemical gas sensor is at least two, electrochemical gas sensor is connected with signalling means processor, signalling means processor is connected with display, draft tube is provided with air pump, the gas inlet end structure of draft tube is tapered, large end outwardly, the opening's edge place of gas inlet end structure is provided with rubber weather strip, gas inlet end structure is provided with the stationary installation for fixing air intake opening, described stationary installation is a pair symmetrically arranged semicircular spring leaf, the free end of two semicircular spring leafs engages each other.
2. gas leak detection apparatus according to claim 1, is characterized in that: described electrochemical gas sensor is NH
3electrochemical gas sensor, H
2s electrochemical gas sensor, SO
2electrochemical gas sensor and NO
2in electrochemical gas sensor any two or more.
3. gas leak detection apparatus according to claim 1, is characterized in that: draft tube is that elastomeric material is made.
4. gas leak detection apparatus according to claim 1, is characterized in that: described air pump is Minitype vibration diaphragm air pump or drum pump.
5. gas leak detection apparatus according to claim 1, is characterized in that: gas detecting instrument is provided with the tube rolling device for rolling draft tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510909162.1A CN105571786A (en) | 2015-12-10 | 2015-12-10 | Gas leakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510909162.1A CN105571786A (en) | 2015-12-10 | 2015-12-10 | Gas leakage detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105571786A true CN105571786A (en) | 2016-05-11 |
Family
ID=55882172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510909162.1A Pending CN105571786A (en) | 2015-12-10 | 2015-12-10 | Gas leakage detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105571786A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500917A (en) * | 2016-12-02 | 2017-03-15 | 广州供电局有限公司 | SF6Powered leak detector |
| CN107064202A (en) * | 2017-06-19 | 2017-08-18 | 重庆中国三峡博物馆 | Real time comprehensive detection fumigating effect equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000193185A (en) * | 1998-12-28 | 2000-07-14 | Non-Destructive Inspection Co Ltd | Installation device for sound sensor |
| JP2000266629A (en) * | 1999-03-12 | 2000-09-29 | Osaka Gas Co Ltd | Jig for mounting shaker to pipe |
| DE10110987A1 (en) * | 2001-03-07 | 2002-09-26 | Woehler Mesgeraete Kehrgeraete | Measuring apparatus for determining the rate of a leak such as a gas leak with a gas probe connected to a gas sensor |
| CN1707236A (en) * | 2004-06-04 | 2005-12-14 | 高级运作公司 | Improved duct bleed leak detection system |
| CN201188050Y (en) * | 2008-01-04 | 2009-01-28 | 福建师范大学 | On-line monitoring device for SF6 gas leakage base on multi-sensor |
| CN201819771U (en) * | 2009-12-10 | 2011-05-04 | 徐洪志 | Detection device for hidden leak of water pipe |
| CN103221797A (en) * | 2010-07-21 | 2013-07-24 | 高级知识产权有限公司 | Joint cover with manifold block for duct leak detection system |
-
2015
- 2015-12-10 CN CN201510909162.1A patent/CN105571786A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000193185A (en) * | 1998-12-28 | 2000-07-14 | Non-Destructive Inspection Co Ltd | Installation device for sound sensor |
| JP2000266629A (en) * | 1999-03-12 | 2000-09-29 | Osaka Gas Co Ltd | Jig for mounting shaker to pipe |
| DE10110987A1 (en) * | 2001-03-07 | 2002-09-26 | Woehler Mesgeraete Kehrgeraete | Measuring apparatus for determining the rate of a leak such as a gas leak with a gas probe connected to a gas sensor |
| CN1707236A (en) * | 2004-06-04 | 2005-12-14 | 高级运作公司 | Improved duct bleed leak detection system |
| CN201188050Y (en) * | 2008-01-04 | 2009-01-28 | 福建师范大学 | On-line monitoring device for SF6 gas leakage base on multi-sensor |
| CN201819771U (en) * | 2009-12-10 | 2011-05-04 | 徐洪志 | Detection device for hidden leak of water pipe |
| CN103221797A (en) * | 2010-07-21 | 2013-07-24 | 高级知识产权有限公司 | Joint cover with manifold block for duct leak detection system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500917A (en) * | 2016-12-02 | 2017-03-15 | 广州供电局有限公司 | SF6Powered leak detector |
| CN107064202A (en) * | 2017-06-19 | 2017-08-18 | 重庆中国三峡博物馆 | Real time comprehensive detection fumigating effect equipment |
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Application publication date: 20160511 |