CN203053914U - Gas sensor - Google Patents
Gas sensor Download PDFInfo
- Publication number
- CN203053914U CN203053914U CN 201320014276 CN201320014276U CN203053914U CN 203053914 U CN203053914 U CN 203053914U CN 201320014276 CN201320014276 CN 201320014276 CN 201320014276 U CN201320014276 U CN 201320014276U CN 203053914 U CN203053914 U CN 203053914U
- Authority
- CN
- China
- Prior art keywords
- gas sensor
- gas
- oil
- temperature
- sensing element
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses a gas sensor which comprises a shell with a cavity, and a temperature and humidity detection device, a compound oil-gas separating film and a gas sensitive member installed in the cavity. The lower end of the shell is connected with an oil filling electric device. The compound oil-gas separating film comprises a body film and a porous metal sintering piece arranged on the body film. The compound oil-gas separating film is installed in the cavity of the shell in a manner that the body film of the compound oil-gas separating film faces the lower end of the shell. The gas sensitive member is located on one side of the porous metal sintering piece of the compound oil-gas separating film. The temperature and humidity detection device is located on one side of the body film of the compound oil-gas separating film. The gas sensor provided by the utility model has the characteristics of small size, simple installation, low cost and the like. The gas sensor can detect micro water content, oil temperature and fault gas content of insulating oil at the same time and can compensate and correct the detection result in real time according to temperature of insulating oil obtained by the temperature and humidity detection device, so that the problem of inaccurate detection is solved and the detection precision of the gas sensor is improved.
Description
Technical field
The utility model relates to the on-line monitoring technique field of oil-filled electrical equipment, relates in particular to a kind of gas sensor for online accurate detection insulating oil micro-moisture, oily temperature and failure gas content.
Background technology
Reliable and the safe operation of oil-filled electrical equipments such as transformer, reactor, mutual inductor and sleeve pipe is the key that guarantees high benefit generating, transmission of electricity and distribution.When device interior generation mechanical fault, hot stall, discharge fault or oil, when paper is aging, all can produce various characteristic gas, and be dissolved in the oil.Detect fuel-displaced middle failure gas content timely and effectively, can greatly reduce the generation of mishap.
For the content of insulation oil dissolved gas, generally can finish by the fuel cell gas sensor test.Fuel cell is a kind of device that directly chemical energy (gas or liquid fuel) is converted to electric energy by electrochemical reaction.The fuel cell gas sensor is monitored the variation of gas content in the insulating oil by the current signal (strength of current is directly proportional with gas concentration) between detection fuel cell two electrodes, whether the accuracy that detects directly is decided by with the contacted oil sample of fuel cell representative, and just whether the content of gas has represented gas content in the whole transformer oil in this oil sample.For can adopting the mode of thermal convection or mechanical convection, this representativeness that realizes oil sample realizes the forced circulation of oil sample.Mechanical convection is owing to will introduce circulating oil pump, maintenance that can great increase equipment and seldom in fuel cell system, adopting, the general mode of thermal convection that adopts realizes in the feulcell prototype system, just realize the circulation of oil sample by the temperature difference between fuel cell body and the transformer oil, thereby obtain representative oil sample.Implementation and relative merits to two kinds of convection types among the US Patent No. 5773709A have all been carried out the elaboration of system, though describe the implementation of thermal convection mode device in this patent in detail, do not consider in this system that temperature extent between oil and the fuel cell is to oil sample convection current degree and to the influence of testing result.In the use of entire equipment, we can control the temperature of fuel cell, but uncontrollable oil temperature, and because oil has very large relation warm load, running status and season etc. with transformer, this can cause the inaccurate of detection.
Moisture measurement in the transformer oil has become a very important part in the transformer maintenance.Water is that insulating oil is at a kind of decomposition product below 500 ℃.Under electric field action, moisture in the oil and impurity can form " foot bridge ", not only can destroy the intensity of insulating oil, the resistivity of insulating material is reduced, leakage current increases, and then the instability and the potential danger that cause equipment to move, can cause coil to produce arc ring and short circuit phenomenon when moisture is big, even can blast in some cases etc.Therefore in the oil little water (micro-moisture) on-line monitoring for prevention moisture to the destruction of transformer insulated performance and find that the oily reviewing knowledge already acquired barrier below 500 ℃ is of great practical significance.The test of micro-moisture is finished by little water sensor in the insulating oil, and its status monitoring work for oil-filled electrical equipments such as transformers is more fully assessed with diagnosis foundation is provided.Though the monitoring of water content in oil is most important to the status monitoring of oil-filled electrical equipments such as transformer, but general detection mode in the market is to add a humiture detection module outside the failure gas detection module more in addition, it is big that this detecting pattern has a volume, the cost height, install complicated, defectives such as maintenance is big do not meet the requirement of, high-intelligentization highly integrated to intelligent grid at present.
The utility model content
The technical problems to be solved in the utility model is, above-mentioned defective at prior art, a kind of gas sensor is provided, can accurately measures gas content, moisture and insulating oil temperature in the insulating oil simultaneously, and have gas concentration and compensate debugging functions automatically.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of gas sensor is provided, comprises the housing with inner chamber and be installed in humiture pick-up unit in the described housing inner chamber, combined type gas-oil separation film, gas sensor and be used for the built-in temp probe of monitoring gas sensor temperature in real time;
The lower end of described housing is used for being connected with oil-filled electrical equipment; Described combined type gas-oil separation film comprises body membrane and is located at porous metals sintered sheets on the described body membrane that described combined type gas-oil separation film is installed in the inner chamber of described housing towards the lower end of described housing with its body membrane; Described gas sensor is positioned at porous metals sintered sheets one side of described combined type gas-oil separation film, and described humiture pick-up unit is positioned at body membrane one side of described combined type gas-oil separation film.
Comprise that also described humidity controlling unit is installed in the described housing inner chamber for the humidity controlling unit of the described enclosure interior humidity of control, and be positioned at described gas sensor top.
Described humiture pick-up unit comprises temperature-sensing element (device), humidity sensing element and circuit board, and described temperature-sensing element (device) and humidity sensing element are connected with circuit board by a fixed socket; Described temperature-sensing element (device) and humidity sensing element are installed in described fixed socket one side, and described circuit board is installed in the relative opposite side of described fixed socket, and described temperature-sensing element (device) all is electrically connected with described circuit board with humidity sensing element.
Described humiture pick-up unit also comprises signal wire, and the sidewall of described housing is provided with hole, and described signal wire one end is by described hole connecting circuit plate.
Described humiture pick-up unit also comprises porous protective cover and securing cover plate, and described porous protective cover is connected described fixed socket one side, and described temperature-sensing element (device) and humidity sensing element are located at wherein; Described securing cover plate is located on the described fixed socket in this side cover of described circuit board; And be tightly connected by first O-ring seal between described humiture pick-up unit and the described housing.
Described humidity sensing element is humicap, hygristor or macromolecule wet sensory material.
Described combined type gas-oil separation film is by the bore seal of second O-ring seal and described housing.
Described gas sensor is installed in the described housing by a battery case; Described gas sensor is installed in the body of described battery case, and the lid of described battery case is fixed on the described body; Described humidity controlling unit is fixed on the lid of described battery case.
Described gas sensor is micro fuel cell, it comprises cathode leg and the electrolyte of anode electrode, the plate lead that connects described anode electrode, cathode electrode, the described cathode electrode of connection, and described electrolyte is arranged between described anode electrode and the cathode electrode; Micro fuel cell is installed in the housing inner chamber towards combined type gas-oil separation film with its anode electrode.
Described housing lower end is provided with the external thread that is connected for oil-filled electrical equipment; Described housing upper end is provided with a case lid, and described case lid is provided with gas signal out splice going splice and temperature-humidity signal out splice going splice, realizes sealing by the 3rd O-ring seal between described case lid and the described housing.
Gas sensor of the present utility model by the humiture pick-up unit is arranged in its housing, is beneficial to integrally-built reducing, and has also saved starting material in the space-saving while, thereby has reduced cost, have volume little, install simple and characteristics such as cost is low; Can detect micro-moisture in the insulating oil, oily temperature and failure gas content simultaneously, can be according to the temperature difference between the temperature of the temperature of the detected insulating oil of humiture pick-up unit and the detected gas sensor of built-in temp probe, the testing result of gas content is carried out real-Time Compensation proofreaies and correct, solve the inaccurate problem that detects, improve the accuracy of detection of gas sensor.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of the utility model gas sensor one embodiment;
Fig. 2 is the decomposition texture cut-open view of gas sensor shown in Figure 1;
Fig. 3 is the decomposition texture synoptic diagram of the humiture pick-up unit of gas sensor shown in Figure 2;
Fig. 4 is the fundamental diagram of the utility model gas sensor;
Fig. 5 is the used simulation oil circuit synoptic diagram of gas sensor performance test of the present utility model;
Fig. 6 is the vertical view of D part among Fig. 5;
The graph of a relation of the testing result of gas sensor and insulating oil temperature when Fig. 7 is not temperature compensated;
Fig. 8 is the graph of a relation of testing result and the insulating oil temperature of gas sensor when temperature compensation is arranged.
Embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
As shown in Figures 1 and 2, the gas sensor of the utility model one embodiment comprises housing 1, combined type gas-oil separation film 2, gas sensor 3, humiture pick-up unit 4, built-in temp probe 5 and humidity controlling unit 6 with inner chamber 10.Combined type gas-oil separation film 2, gas sensor 3, humiture pick-up unit 4, built-in temp probe 5 and humidity controlling unit 6 are installed in housing 1 inner chamber 10, form a gas sensor with housing 1, the tool Highgrade integration can be finished the accurate detection of failure gas in the insulating oil, moisture and oil temperature simultaneously.And the utility model is beneficial to integrally-built reducing by humiture pick-up unit 4 is installed in the housing 1, has also saved starting material in the space-saving while, thereby can reduce cost; Also the temperature difference between the temperature of the gas sensor 3 that records of the insulating oil temperature that can record according to humiture pick-up unit 4 and built-in temp probe 5 is carried out the compensation correction of real-time online to the measurement result of failure gas content, can improve the detection accuracy of failure gas greatly.
Described combined type gas-oil separation film 2 comprises body membrane and is located at porous metals sintered sheets on the body membrane, and body membrane is the macromolecule body membrane, and the specific descriptions of this combined type gas-oil separation film 2 can be referring to Chinese patent CN200310111953.7 prospectus.This combined type gas-oil separation film 2 is installed in the inner chamber 10 of housing 1 towards the lower end of housing 1 with its body membrane.Further, combined type gas-oil separation film 2 is installed on the step 101 of housing 1 inner chamber 10, and it is by inner chamber 10 sealings of second O-ring seal 21 with housing 1, and insulating oil penetrates into combined type gas-oil separation film 2 tops from housing 1 lower end and contacts with gas sensor 3 in the time of can preventing from using.In the present embodiment, second O-ring seal 21 is provided with two, realizes the staged sealing effectiveness.Second O-ring seal 21 is preferably the oil resistant viton seal ring.During use, be dissolved in failure gas in the insulating oil under the driving of combined type gas-oil separation film 2 both sides partial pressure differences, absorption by the body membrane surface, dissolving diffusion and desorption, be penetrated into the opposite side of this combined type gas-oil separation film 2, and insulating oil can not see through this combined type gas-oil separation film 2, and then isolates failure gas effectively from insulating oil.
As shown in Figure 2, gas sensor 3 is used for the sensing failure gas with the output corresponding electric signal, and it is positioned at porous metals sintered sheets one side of combined type gas-oil separation film 2.This gas sensor 3 is installed in housing 1 inner chamber 10 by a battery case 7, and wherein, battery case 7 comprises body 71 and lid 72, and this battery case 7 can adopt metal material to make.Gas sensor 3 is installed in the body 71 of battery case 7, and an O-ring seal 30 can be established to realize the sealing between this bottom and the body 71 in gas sensor 3 bottoms, and the lid 72 of battery case 7 is fixed on the body 71 by screw etc.In the present embodiment, gas sensor 3 adopts fuel cell, is specially micro fuel cell, is understandable that gas sensor 3 is not limited to fuel cell.With reference to shown in Figure 4, this fuel cell 3 comprises anode electrode 31, the plate lead that connects anode electrode 31, cathode electrode 32, connects cathode leg and the electrolyte 33 of cathode electrode 32, electrolyte 33 is arranged between anode electrode 31 and the cathode electrode 32, and fuel cell 3 is installed in housing 1 inner chamber 10 towards combined type gas-oil separation film 2 with its anode electrode 31.Failure gas in the insulating oil reaches the anode electrode 31 of fuel cell 3, and discharges electronics on the anode electrode 31 after separating on the combined type gas-oil separation film 2, and the electric signal that produces passes to the external signal receiving equipment by plate lead.And the proton after oxidation on the anode electrode 31 can reach cathode electrode 32 by electrolyte 33, and is combined into water with the oxygen atom that reduces at cathode electrode 32, and the electric signal that cathode electrode 32 produces passes to the external signal receiving equipment by cathode leg.
Described built-in temp probe 5 is used for monitoring gas sensor 3(fuel cell in real time) temperature located, it is installed in assigned address in the housing 1, as is positioned near the gas sensor 3.Humidity controlling unit 6 is used for control housing 1 interior humidity, in optimum condition, makes fuel cell 3 have good electrocatalysis characteristic with the electrolyte that keeps fuel cell 3.This humidity controlling unit 6 is located at fuel cell 3 tops, and it can be fixed on the lid 72 of battery case 7 by screw etc.
Humiture pick-up unit 4 is positioned at body membrane one side of combined type gas-oil separation film 2, adopt the mode that embeds to be installed in housing 1 inner chamber 10, insulating oil can contact with humiture pick-up unit 4 in housing 1 inner chamber 10, is beneficial to oily temperature and moisture thereof that this humiture pick-up unit 4 detects insulating oil.Housing 1 inner chamber 10 parts at humiture pick-up unit 4 places form the convection current chamber, produce thermal convection and isolate failure gas by combined type gas-oil separation film 2 in this chamber for insulating oil.The seepage velocity temperature influence of failure gas on combined type gas-oil separation film 2, therefore the utility model is arranged on humiture pick-up unit 4 near the combined type gas-oil separation film 2, it can contact with insulating oil in the convection current chamber, so not only can test moisture in the insulating oil, simultaneously also the more direct failure gas that detects in the temperature at combined type gas-oil separation film 2 places.
As shown in Figure 3, particularly, humiture pick-up unit 4 comprises temperature-sensing element (device) 41, humidity sensing element 42 and circuit board 43, temperature-sensing element (device) 41 is for detection of the temperature of insulating oil, humidity sensing element 42 is for detection of micro-moisture content in the insulating oil, and humidity sensing element 42 can be humicap, hygristor or macromolecule wet sensory material etc.Circuit board 43 is electrically connected with temperature-sensing element (device) 41 and humidity sensing element 42, is used for the signal of collecting temperature sensitive element 41 and humidity sensing element 42 detected temperature and moisture.This circuit board 43 can adopt surface-mounted integrated circuit.The utility model can be according to the temperature difference between the temperature of the temperature of the temperature-sensing element (device) 41 detected insulating oils of humiture pick-up unit 4 and built-in temp probe 5 detected fuel cells 3, testing result is proofreaied and correct in real time, solve the gas on-site sensor and detect inaccurate problem, improve the accuracy of detection of gas sensor.
Temperature-sensing element (device) 41 and humidity sensing element 42 are connected with circuit board 43 by a fixed socket 44.Temperature-sensing element (device) 41 and humidity sensing element 42 are installed in fixed socket 44 1 sides, and circuit board 43 is installed in fixed socket 44 relative opposite sides.Humiture pick-up unit 4 has an end of temperature-sensing element (device) 41 and humidity sensing element 42 to be embedded in housing 1 inner chamber 10 with it, and circuit board 43 does not embed housing 1 inner chamber 10, and passes through the setting of fixed socket 44, also stops insulating oil to be penetrated into circuit board 43 places simultaneously.Described fixed socket 44 adopts special substances to make, and has oil resistant, advantage such as high temperature resistant and high temperature resistant.Humiture pick-up unit 4 also comprises signal wire, and it is connected with circuit board 43, is used for the transmission signal.For the signal phase mutual interference that prevents that temperature-sensing element (device) 41 and humidity sensing element 42 from being sent out, the sidewall of signal wire from housing 1 passed, corresponding establish hole 102 at housing 1 sidewall and pass for signal wires.This signal wire one end is by being welded to connect on circuit board 43, the other end pass hole 102 can with case lid 11 on the temperature-humidity signal out splice going splice be connected 14.
As shown in Figure 3, this humiture pick-up unit 4 also comprises porous protective cover 45 and securing cover plate 46, porous protective cover 45 is connected fixed socket 44 1 sides, temperature-sensing element (device) 41 and humidity sensing element 42 is located at wherein, with the probe of this humiture pick-up unit 4 of its formation.This porous protective cover 45 both can protect temperature-sensing element (device) 41 and humidity sensing element 42 to avoid extraneous damage; can also make simultaneously insulating oil successfully flow through temperature-sensing element (device) 41 and humidity sensing element 42, accurately detect temperature and the moisture of insulating oil.Porous protective cover 45 adopts stainless steel or macromolecule material to make, and has porous structure, and insulating oil contacts with humidity sensing element 42 with temperature-sensing element (device) 41 by porous structure.
Described securing cover plate 46 is located on the fixed socket 44 in circuit board 43 these side covers, thereby forms whole humiture pick-up unit 4 with humiture pick-up unit 4 other described parts, and securing cover plate 46 can be used for holding circuit plate 43.In addition, be tightly connected by one first O-ring seal 40 between humiture pick-up unit 4 and the housing 1, this first O-ring seal 40 adopts the rubber seal of oil resistant.
With reference to shown in Figure 4, gas sensor of the present utility model also includes heating arrangement 8, and this heating arrangement 8 is installed on the housing 1, is used for the temperature at control fuel cell 3 places.The failure gas that produces when oil-filled inside electric appliance generation local overheatings such as transformer or discharge fault will be dissolved in the insulating oil, and be diffused into the body of oil-filled electrical equipment gradually along with the convection current of insulating oil.By the temperature at fuel cell 3 places in the heating arrangement 8 control gas sensors, and then the performance of control electrochemical reaction.Dissolving failure gas in the insulating oil in the housing 1 convection current chamber of gas sensor permeates under the driving of combined type gas-oil separation film 2 both sides partial pressure differences automatically.The flow direction of insulating oil is shown in arrow A among the figure, and failure gas (includes H
2, CO and C
2H
2Deng) the infiltration direction shown in arrow B among the figure, air is (as O wherein
2) can enter housing 1 inner chamber 10 from case lid 11 tops, as shown by arrow C.Gas molecule after the infiltration is under the effect of eelctro-catalyst, spontaneously electrochemical reaction takes place in the electrode (comprising anode and negative electrode) at fuel cell 3, the electronics that produces records by external circuit (microprocessor), the intensity of this electric signal be directly proportional with the content of failure gas (obedience Faraday's law).Because electrochemical reaction and the seepage velocity equal temperature influence of gas on combined type gas-oil separation film 2, and the response situation of the two directly has influence on the intensity of electric signal, therefore the utility model carries out the two temperature compensation by the electric signal that fuel cell 2 is produced, namely by built-in temp probe 5 and humiture pick-up unit 4 detected temperature differences the electric signal that fuel cell 3 produces is carried out real-Time Compensation and correction, the content of accurate detection failure gas, the energy better services is in the tracking of oil-filled insulation of electrical installation system aging situation.
As shown in Figure 5, it is the used simulation oil circuit synoptic diagram of gas sensor performance test of the present utility model.This simulation oil circuit effect is the real running environment of oil-filled power equipments such as analogue transformer, the performance when precisely weighing gas sensor and using in true environment.
Shown in Fig. 5,6, this simulation oil circuit comprises pipeline 100, is installed in tested instrument 110, fuel tank 120, flowmeter 140, oil pump 150 and temperature conditioning unit 160 on the pipeline 100, and wherein arrow is oily flow path direction.Employing object gas/air gas mixture or the injection feeder 170 of the high concentration gas oil sample of preparation in advance are fuel tank 120 air-blowing, the oil flow path direction as shown by arrow E, it flows to temperature conditioning unit 160, oil pump 150, flowmeter 140 and tested instrument 110 successively from fuel tank 120 beginnings.As shown in Figure 5, gas sensor is installed on the pipeline 100, tests under the certain situation of gas content and gas sensing actuator temperature in the simulation oil circuit relation in the detected gas concentration of gas sensor and the simulation oil circuit between the insulating oil temperature.Concrete outcome is seen Fig. 7 and Fig. 8.Wherein Fig. 7 is the test result when gas sensor not being carried out temperature difference compensation, as seen from Figure 7, in this case, when the temperature in the insulating oil changed to 50 ℃ process by 10 ℃ in, gas sensor reached 60% to the difference of the testing result of insulation oil dissolved gas (about 200PPM hydrogen) content.Fig. 8 is the test result when gas sensor is carried out temperature difference compensation, as seen from Figure 8, is having under the situation of temperature compensation, and when the temperature of insulating oil changed to 50 ℃ process by 10 ℃ in, the testing result of gas sensor differed in 5%.
Claims (10)
1. a gas sensor is characterized in that, comprises the housing with inner chamber and is installed in humiture pick-up unit in the described housing inner chamber, combined type gas-oil separation film, gas sensor and is used for the built-in temp probe of monitoring gas sensor temperature in real time;
The lower end of described housing is used for being connected with oil-filled electrical equipment; Described combined type gas-oil separation film comprises body membrane and is located at porous metals sintered sheets on the described body membrane that described combined type gas-oil separation film is installed in the inner chamber of described housing towards the lower end of described housing with its body membrane; Described gas sensor is positioned at porous metals sintered sheets one side of described combined type gas-oil separation film, and described humiture pick-up unit is positioned at body membrane one side of described combined type gas-oil separation film.
2. gas sensor according to claim 1 is characterized in that, comprises that also described humidity controlling unit is installed in the described housing inner chamber for the humidity controlling unit of the described enclosure interior humidity of control, and is positioned at described gas sensor top.
3. according to each described gas sensor of claim 1-2, it is characterized in that, described humiture pick-up unit comprises temperature-sensing element (device), humidity sensing element and circuit board, and described temperature-sensing element (device) and humidity sensing element are connected with circuit board by a fixed socket; Described temperature-sensing element (device) and humidity sensing element are installed in described fixed socket one side, and described circuit board is installed in the relative opposite side of described fixed socket, and described temperature-sensing element (device) all is electrically connected with described circuit board with humidity sensing element.
4. gas sensor according to claim 3 is characterized in that, described humiture pick-up unit also comprises signal wire, and the sidewall of described housing is provided with hole, and described signal wire one end is by described hole connecting circuit plate.
5. gas sensor according to claim 3, it is characterized in that, described humiture pick-up unit also comprises porous protective cover and securing cover plate, and described porous protective cover is connected described fixed socket one side, and described temperature-sensing element (device) and humidity sensing element are located at wherein; Described securing cover plate is located on the described fixed socket in this side cover of described circuit board; And be tightly connected by first O-ring seal between described humiture pick-up unit and the described housing.
6. gas sensor according to claim 3 is characterized in that, described humidity sensing element is humicap, hygristor or macromolecule wet sensory material.
7. gas sensor according to claim 1 is characterized in that, described combined type gas-oil separation film is by the bore seal of second O-ring seal and described housing.
8. according to each described gas sensor of claim 1-2, it is characterized in that, described gas sensor is installed in the described housing by a battery case, and described gas sensor is installed in the body of described battery case, and the lid of described battery case is fixed on the described body; Described humidity controlling unit is fixed on the lid of described battery case.
9. gas sensor according to claim 8, it is characterized in that, described gas sensor is micro fuel cell, it comprises cathode leg and the electrolyte of anode electrode, the plate lead that connects described anode electrode, cathode electrode, the described cathode electrode of connection, and described electrolyte is arranged between described anode electrode and the cathode electrode; Micro fuel cell is installed in the housing inner chamber towards combined type gas-oil separation film with its anode electrode.
10. gas sensor according to claim 1 is characterized in that, described housing lower end is provided with the external thread that is connected for oil-filled electrical equipment; Described housing upper end is provided with a case lid, and described case lid is provided with gas signal out splice going splice and temperature-humidity signal out splice going splice, realizes sealing by the 3rd O-ring seal between described case lid and the described housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320014276 CN203053914U (en) | 2013-01-11 | 2013-01-11 | Gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320014276 CN203053914U (en) | 2013-01-11 | 2013-01-11 | Gas sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203053914U true CN203053914U (en) | 2013-07-10 |
Family
ID=48736854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320014276 Expired - Fee Related CN203053914U (en) | 2013-01-11 | 2013-01-11 | Gas sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203053914U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926299A (en) * | 2013-01-11 | 2014-07-16 | 深圳市深安旭传感技术有限公司 | Gas sensor |
-
2013
- 2013-01-11 CN CN 201320014276 patent/CN203053914U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926299A (en) * | 2013-01-11 | 2014-07-16 | 深圳市深安旭传感技术有限公司 | Gas sensor |
| CN103926299B (en) * | 2013-01-11 | 2016-05-25 | 深圳市深安旭传感技术有限公司 | Gas sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103926299B (en) | Gas sensor | |
| CN102027356B (en) | High temperature and pressure oxidation-reduction potential measuring and monitoring device for hot water systems | |
| CN105806774B (en) | High-temperature high-pressure dynamic electrochemical test experimental device and test method | |
| CN108051032A (en) | The on-line monitoring system of the few oily equipment of substation | |
| CN206192402U (en) | Gaseous little water of SF6, density on -line monitoring system | |
| JP2003057092A (en) | Water level sensor | |
| CN108232248A (en) | A kind of fuel cell pile assembling test platform and its test method | |
| CN111308257A (en) | Transformer fault monitoring method | |
| CN109116154A (en) | A kind of experimental method of winding model humidified insulation and Aging Assessment research | |
| CN101477076A (en) | Sensor apparatus for measuring and detecting acetylene and hydrogen dissolved in a fluid | |
| EP2278121A2 (en) | Monitoring of undesirable fluid ingress into subsea control modules | |
| CN108956957A (en) | A kind of hydrogen gas sensor for oil dissolved gas detection | |
| CN102912356A (en) | Multifunctional catholic protection test probe and test method | |
| CN203053914U (en) | Gas sensor | |
| CN206270281U (en) | A kind of high sensitivity and long-life electrochemical sensor | |
| CN104914145A (en) | Catalytic reaction electrochemical principle-based hydrogen concentration sensor | |
| JP2008164305A (en) | Electrochemical sensor, target gas monitor device, and concentration detection method of electrochemical sensor | |
| CN109443996B (en) | Device and method for sensitively detecting membrane permeation pressure value in membrane distillation process | |
| CN208672747U (en) | Solid dielectric polarization depolarization current measuring device | |
| CN203069551U (en) | Fuel cell gas sensor | |
| CN101451899A (en) | Water detecting and diagnosing method in filling transformer | |
| CN204594926U (en) | A kind of hydrogen gas concentration sensor based on catalytic reaction electrochemical principle | |
| CN205175509U (en) | Indirect formula liquid level measurement device | |
| CN205749794U (en) | A kind of scene insulating oil dielectric strength testing device | |
| CN204594925U (en) | A kind of used in nuclear power station density of hydrogen on-Line Monitor Device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20180111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |