CN2485639Y - Temperature sensor for engine cylinder inner wall - Google Patents
Temperature sensor for engine cylinder inner wall Download PDFInfo
- Publication number
- CN2485639Y CN2485639Y CN 00230483 CN00230483U CN2485639Y CN 2485639 Y CN2485639 Y CN 2485639Y CN 00230483 CN00230483 CN 00230483 CN 00230483 U CN00230483 U CN 00230483U CN 2485639 Y CN2485639 Y CN 2485639Y
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- sensor body
- sensor
- temperature
- wall
- cylinder jacket
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Abstract
The utility model relates to an engine cylinder inner wall temperature measuring sensor, comprising a sensor body and a hot coupling wire. The utility model is characterized in that the end of the sensor body is drilled with two little holes; one little hole is positioned in the middle, while the other little hole is positioned beside the hole; and the two little holes are connected with a larger centre hole. The two pairs of hot coupling wires are respectively passed through the two little holes. The hot coupling wires are sleeved with polytetrafluoroethylene clads. The signal of the sensor can pass through a larger cooling water cavity, a cylinder sleeve metal wall and an outer layer component and can be led outside of the device through devious path. The utility model has the advantages of comparatively high measuring precision, comparatively good insulation capability, and seal performance of the cooling water cavity. The utility model is suitable to be used for measuring the temperature of the inner wall surface of engine cylinder sleeve and high temperature and high voltage container.
Description
The utility model relates to a kind of high temperature and high pressure containers internal face sensor for measuring temperature, particularly relate to the survey sensor of air cylinder sleeve of engine internal face temperature.
Nineteen eighty-two " Chinese engine testing academic nd Annual Meeting collection " " research of supercharged diesel engine cylinder head temperature and hot-fluid " literary composition of publishing of (first collection) 111-118 page or leaf, introduced to cover and utilized the penetration type thermopair as temperature probe at cylinder of diesel engine.The thermojunction of this sensor is an oblate column copper billet, contacts with cylinder aperture silently also to slide in aperture.This cylinder silently interference fit is installed on cylinder head fire power face side, and the aperture that cooperates with hot junction is a blind hole, at the bottom of the blind hole apart from thick not the drilling of the about 1mm of chamber wall fire power face.Thermocouple wire passes through cooling water cavity and causes machine exterior as the pipe of sealing and guiding with stainless steel injection needle protection, external application copper pipe.This penetration type thermocouple temperature measurement sensor has the following disadvantages:
1. because its structure is limit, and the distance of the cooling water cavity that it can pass through is limited, use so only be suitable for put-put;
2. its thermojunction is the temperature silently that perception is in contact with it, and this blind hole bottom silently still has the thick metal level of 1mm to be separated by apart from combustion chamber wall surface, and therefore, this hot junction can't directly record the temperature of internal face (combustion chamber wall surface).It utilizes the method that blind hole place temperature is calculated wall surface temperature of surveying, and has error.
3. the needle tubing of its protective casing and copper pipe; mainly adopt for the consideration of installation and Insulation Problems; measure for large and medium-sized air cylinder sleeve of engine inner wall temperature, need the long winding raod footpath of process that the signal of sensor senses is caused machine exterior, this structure then can not realize.
The purpose of this utility model is a kind of novel diesel machine cylinder liner internal wall sensor for measuring temperature of design, to solve the direct measurement of the pressure vessel and equipment internal face temperature under the high-temperature and high-pressure conditions that large and medium-sized air cylinder sleeve of engine internal face temperature reaches and engine chamber is similar, make sensor signal can pass big cooling water cavity and cylinder jacket metallic walls and outer component, when the path of complications causes outside the machine, have higher measuring accuracy, good insulation and to the sealing of cooling water cavity.
The purpose of this utility model is achieved in that
Sensor is carried out layer, sensor body, thermocouple wire formation by epoxy resin, high-temperature seal adhesive (silicate adhesive), teflon bag.The screw thread of sensor body and polished rod cooperate with sensor mounting hole on the tested cylinder jacket, and screw thread design is at the chilled water wall end with respect to cylinder jacket, can prevent that screw thread from directly working convenient disassembly when changing sensor body under gas high-temperature; Can guarantee also that in addition mounting hole adds thread segment and the concentricity requirement of unthreaded hole section in man-hour, realizes the machining precision of sensor body mounting hole easily.The screw thread of sensor body is corresponding with the cylinder jacket wall thickness with the length of polished rod.The sensor body material is identical with tested cylinder jacket material.Sensor body mounting hole quality of fit height on polished rod section and the cylinder jacket, so that the sensor body heat transfer conditions is very little to the influence of cylinder jacket heat transfer conditions, measuring error is little.The sensor body center is drilled with aperture, and a pair of thermocouple wire is by aperture, and its hot junction is welded on the sensor body head end.Also the sensor body head can be bored two apertures, an aperture is at the center, and another aperture is connected to a big slightly center pit on its next door behind two apertures.Two pairs of thermocouple wires pass from two apertures respectively.The a pair of thermocouple wire hot junction that passes from central small hole is welded on the sensor body end face, and another treats directly to be welded on the cylinder liner internal wall after sensor is installed on the cylinder jacket to the thermocouple wire hot junction.Adopt two pairs of thermopairs on a sensor body, the one, gapped between the mounting hole on the cylinder jacket because of sensor body and its, thermopair is welded on the sensing body end face and directly is welded in the temperature of measuring on the cylinder wall certain difference, adopts two pairs of thermopairs then two kinds of data can be contrasted; The 2nd, in actual test process, owing to accidentally or other reason make the impaired and cisco unity malfunction of certain a pair of thermopair, then another test data to thermopair is still available, must hang cylinder with emat sensor more to diesel engine and be unlikely.Thermopair is carried out layer with the teflon bag and wrap shoes, a teflon bag shoe layer softness, moisture-resistant, wear-resisting, high temperature resistant, corrosion-resistant, dielectric properties are good.Therefore be suitable for being applied to pass through this thermopair long and winding raod footpath and drawing outside the machine, being dipped in does not influence insulation in the chilled water, can bear the higher temperature of air cylinder sleeve of engine, and it is not fragile to work under the engine luggine condition.The teflon bag of thermopair is carried out layer need carry out the encapsulating of just packing into after the surface treatment, this is that bonding property is poor because the teflon bag is carried out layer, with high-temperature seal adhesive (silicate adhesive) and epoxy resin affinity not, the teflon bag is carried out layer and can be gluedd joint with high-temperature seal adhesive (silicate adhesive) and epoxy resin after surface treatment.
The solution of the sealing problem of high-temperature high-pressure fuel gas is: packing ring such as copper washer are adopted in the sealing in the mounting hole gap on sensor body and the cylinder jacket, adopt high-temperature seal adhesive (silicate adhesive) between thermopair and the sensor body center pit.The condition of selecting for use is washing away of ability engine high-temperature combustion gas, under High Temperature High Pressure, have the bond strength, good insulation performance, good sealing property of enough physical strengths and metal, good resistance to vibration, thermal expansivity and thermode and around the thermal expansivity of metal close etc.High-temperature seal adhesive (silicate adhesive) must be handled through hot setting after being poured in the sensor body center pit, can reach the physical strength under the described high temperature.Direct and high-temperature seal adhesive (silicate adhesive) adhesive seal of the naked silk of sensor body temperature-sensitive end (front end) thermopair.In the thermopair in the sensor body center pit, the rear end keeps the teflon bag and carries out layer and extend to outside the machine.This is in order to guarantee insulation, to cause the Metal Contact of the naked silk of thermopair and sensor body when being avoided pouring into high-temperature seal adhesive (silicate adhesive) accidentally.Sensor body cold junction center port epoxy sealing.
The utility model has the advantages that:
1, the screw thread design of sensor body is at the chilled water wall end with respect to cylinder jacket, can prevent that screw thread from directly working under gas high-temperature, be convenient to the dismounting of sensor body, be easy to also in addition to realize that the sensor body mounting hole adds double thread section and the concentricity requirement of unthreaded hole section in man-hour.
2, the polished rod section of sensor body and the sensor body mounting hole quality of fit height on the cylinder jacket make the sensor body heat transfer conditions very little to the influence of cylinder heat transfer conditions, and measuring error is little.
3, adopt two pairs of thermopairs on a sensor body, will record sensing body end face temperature respectively and compare, can learn in the High Temperature High Pressure cylinder so more accurately and the actual temperature in the similar container with the temperature that records on the cylinder wall; Guaranteed simultaneously in actual test process, owing to accidentally or other reason make under the situation of the impaired and cisco unity malfunction of certain a pair of thermopair, another test data to thermopair still can be used, and must hang cylinder with emat sensor more to diesel engine and be unlikely.
4, thermopair is carried out layer with the teflon bag and is wrapped shoe, and this teflon bag is carried out layer and had softness, moisture-resistant, wear-resisting, high temperature resistant, corrosion-resistant, the characteristics that dielectric properties are good.Therefore be suitable for being used to pass through this thermopair long and winding raod footpath and drawing outside the machine, be dipped in the higher temperature that does not influence insulation in the chilled water, can bear air cylinder sleeve of engine, it is not fragile to work under the engine luggine condition.
5, packing ring such as copper washer are adopted in the sealing in the mounting hole gap on sensor body and the cylinder jacket, adopt high-temperature seal adhesive (silicate adhesive) sealing between thermopair and the sensor body center pit, have solved the sealing problem of high-temperature high-pressure fuel gas preferably.
Fig. 1 is the structural representation of air cylinder sleeve of engine inner wall temperature survey sensor
Fig. 2 is arranged in the cylinder jacket temperature measuring equipment structural representation of cylinder jacket upper end for thermopair
Fig. 3 is arranged in the cylinder jacket temperature measuring equipment structural representation of cylinder jacket lower end for thermopair
Below in conjunction with embodiment and accompanying drawing the utility model is elaborated:
The screw thread of sensor body 4 and polished rod cooperate with sensor mounting hole on the tested cylinder jacket, and screw thread design is at the chilled water wall end with respect to cylinder jacket, and sensor body 4 materials are identical with tested cylinder jacket material.Sensor mounting hole quality of fit height on polished rod section and the cylinder jacket, so that sensor body 4 heat transfer conditions are very little to the influence of cylinder jacket heat transfer conditions, measuring error is little.Sensor body 4 heads are drilled with two apertures, and an aperture is at the center, and another aperture is connected to a big slightly center pit on its next door behind two apertures.Two pairs of thermocouple wires pass from two apertures respectively, are welded on sensor body 4 end faces from a pair of thermocouple wire hot junction that central small hole passes, and another treats directly to be welded on the cylinder liner internal wall after sensor is installed on the cylinder jacket to the thermocouple wire hot junction.Thermopair is carried out layer 3 with the teflon bag and is wrapped shoe.Copper washer is adopted in the sealing in the mounting hole gap on sensor body 4 and the cylinder jacket, adopts high-temperature seal adhesive 2 (silicate adhesive) sealing between thermopair and sensor body 4 center pits.Naked silk 5 direct and high-temperature seal adhesive 2 (silicate adhesive) adhesive seal of sensor temperature-sensitive end (front end) thermopair; In the thermocouple wire in sensor body 4 center pits, the rear end keeps the teflon bag and carries out layer 3 and extend to outside the machine.Sensor cold junction center port seals with epoxy resin 1.
Claims (2)
1, a kind of air cylinder sleeve of engine inner wall temperature survey sensor, comprise sensor body [4], thermocouple wire [5], it is characterized in that: sensor body [4] head bores two apertures, and an aperture is at the center, another aperture is connected to a big slightly center pit on its next door behind two apertures; Two pairs of thermocouple wires [5] pass from two apertures respectively; Be welded on sensor body [4] end face from a pair of thermocouple wire [5] hot junction that central small hole passes, another treats directly to be welded on the cylinder liner internal wall after sensor is installed on the cylinder jacket to thermocouple wire [5] hot junction; Thermocouple wire [5] is carried out layer [3] with the teflon bag and is wrapped shoe; Adopt silicate adhesive [2] sealing between thermocouple wire [5] and sensor body [4] center pit; Sensor body [4] cold junction center port seals with epoxy resin [1]; The screw thread of sensor body [4] and polished rod cooperate with sensor mounting hole on the tested cylinder jacket, and screw thread design is at the chilled water wall end with respect to cylinder jacket.
2, air cylinder sleeve of engine inner wall temperature survey sensor according to claim 1 is characterized in that the material of sensor body [4] is identical with tested cylinder jacket material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00230483 CN2485639Y (en) | 2000-07-28 | 2000-07-28 | Temperature sensor for engine cylinder inner wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00230483 CN2485639Y (en) | 2000-07-28 | 2000-07-28 | Temperature sensor for engine cylinder inner wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2485639Y true CN2485639Y (en) | 2002-04-10 |
Family
ID=33593579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00230483 Expired - Fee Related CN2485639Y (en) | 2000-07-28 | 2000-07-28 | Temperature sensor for engine cylinder inner wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2485639Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383437C (en) * | 2002-07-08 | 2008-04-23 | 卡尔弗罗伊登柏格两合公司 | Arrangement for a sensor and its wire connections in a multiple-plate metal cylinder-head gasket |
| CN101071082B (en) * | 2006-04-06 | 2010-09-29 | 索尔-丹佛斯公司 | Object having a layer of conducting material forming a sensing device |
| CN101957242B (en) * | 2009-07-20 | 2012-05-23 | 中国北方车辆研究所 | Friction pair dynamic temperature field test method for crawler gear shift mechanism and press plate thereof |
| CN103808421A (en) * | 2014-01-22 | 2014-05-21 | 东风商用车有限公司 | Armored thermocouple assembly for measuring temperature of cylinder cover and manufacturing and mounting method thereof |
| CN101936235B (en) * | 2009-06-29 | 2015-06-17 | H·塞吉尔斯基-服务有限公司 | Method for defining operation parameters of piston-cylinder jacket unit |
| CN105334059A (en) * | 2015-10-13 | 2016-02-17 | 哈尔滨东安汽车发动机制造有限公司 | Temperature field experimental method for engine cylinder head |
| CN109596240A (en) * | 2018-12-29 | 2019-04-09 | 天津雷沃发动机有限公司 | A kind of Wall Surface of Combustion Chamber in Diesel Engine temperature testing method |
| CN110926819A (en) * | 2019-12-05 | 2020-03-27 | 中国航发四川燃气涡轮研究院 | Rotor inner cavity flow characteristic test structure |
-
2000
- 2000-07-28 CN CN 00230483 patent/CN2485639Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383437C (en) * | 2002-07-08 | 2008-04-23 | 卡尔弗罗伊登柏格两合公司 | Arrangement for a sensor and its wire connections in a multiple-plate metal cylinder-head gasket |
| CN101071082B (en) * | 2006-04-06 | 2010-09-29 | 索尔-丹佛斯公司 | Object having a layer of conducting material forming a sensing device |
| CN101936235B (en) * | 2009-06-29 | 2015-06-17 | H·塞吉尔斯基-服务有限公司 | Method for defining operation parameters of piston-cylinder jacket unit |
| CN101957242B (en) * | 2009-07-20 | 2012-05-23 | 中国北方车辆研究所 | Friction pair dynamic temperature field test method for crawler gear shift mechanism and press plate thereof |
| CN103808421A (en) * | 2014-01-22 | 2014-05-21 | 东风商用车有限公司 | Armored thermocouple assembly for measuring temperature of cylinder cover and manufacturing and mounting method thereof |
| CN103808421B (en) * | 2014-01-22 | 2016-05-11 | 东风商用车有限公司 | Armored thermocouple assembly for measuring temperature of cylinder cover and manufacturing and mounting method thereof |
| CN105334059A (en) * | 2015-10-13 | 2016-02-17 | 哈尔滨东安汽车发动机制造有限公司 | Temperature field experimental method for engine cylinder head |
| CN109596240A (en) * | 2018-12-29 | 2019-04-09 | 天津雷沃发动机有限公司 | A kind of Wall Surface of Combustion Chamber in Diesel Engine temperature testing method |
| CN110926819A (en) * | 2019-12-05 | 2020-03-27 | 中国航发四川燃气涡轮研究院 | Rotor inner cavity flow characteristic test structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |