CN101017112A - Thermocoupleassembly capable of being changed online - Google Patents
Thermocoupleassembly capable of being changed online Download PDFInfo
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- CN101017112A CN101017112A CN200610098341.2A CN200610098341A CN101017112A CN 101017112 A CN101017112 A CN 101017112A CN 200610098341 A CN200610098341 A CN 200610098341A CN 101017112 A CN101017112 A CN 101017112A
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- thermopair
- piston type
- outfit
- fixed cover
- protective sleeve
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Abstract
This invention relates to one online change heat couple device composed of heat couple and fix device, wherein, the heat couple is of plug heat couple fixed onto fix cover and heat exchange cylinder; the plug heat couple is composed of non-metal heat couple protector, metal heat couple protection, position slide block and plug structure tail part, wire case chamber and interface case cover; the fix cover is covered on tail and its front end is connected to first flange interface.
Description
Technical field
The present invention relates to a kind of thermopair and corollary apparatus that can online replacing, belong to the technical field that temperature sensor is made.
Background technology
In the production technology of many use industrial combustion furnaces, use thermopair usually as (1100 ~ 1600 ℃) element of measuring temperature.The thermopair of at high temperature working, there is certain limit in its life-span, when thermopair damages, will change.But the thermopair of industrial combustion furnace use at present all is directly to link to each other with equipment interface by flange.For the pressure in the combustion furnace is malleation, and burned gas is when being poisonous chemical substance, just can't carry out online replacing in case thermopair damages,, operating personnel and environmentAL safety be threatened because dismounting can cause the toxic and harmful of high temperature to overflow.
Acid gas burner with petrochemical industry is an example, the about 0.04Mpa of its internally fired gaseous tension, and 1300 ~ 1400 ℃ of temperature of combustion, principal ingredient are poisonous sulfuretted hydrogen (H2S) gas.When the thermopair on being installed in body of heater damages, still can't onlinely change at present, have only blowing out just can carry out later on.But such combustion furnace will move and just carry out shutdown maintenance about 3 years usually.
Summary of the invention
Technical matters: the objective of the invention is to propose a kind of thermocoupleassemblycapable capable of being changed online, make thermopair in the environment of similar above-mentioned use,, can online immediately (without blowing out) change in case damage.
Technical scheme: thermocoupleassemblycapable capable of being changed online of the present invention, to be formed by thermopair and stationary installation, described thermopair is the piston type thermopair, stationary installation is fixed cover and the tube that changes the outfit that is used to change the piston type thermopair; Wherein the piston type thermopair is by the nonmetal thermocouple protective sleeve, the metallic thermocouple protective sleeve, positioning sliding block, the afterbody of piston structure, the terminal box chamber, the terminal box gland is formed, the nonmetal thermocouple protective sleeve is positioned at the front end of piston type thermopair, the metallic thermocouple protective sleeve is positioned at the middle part of piston type thermopair, the front end sleeve of metallic thermocouple protective sleeve is in the rear end of nonmetal thermocouple protective sleeve, metallic thermocouple protective sleeve front end is with positioning sliding block outward, be with the afterbody of piston structure outside the metallic thermocouple protective sleeve rear end, the inner chamber of the afterbody of piston structure is the terminal box chamber, is the terminal box gland in the rear end of the afterbody of piston structure; Fixed cover is enclosed within the outside of the afterbody of piston structure, and the front end of fixed cover is connected with first flange-interface of external unit by joint flange, and the rear end of fixed cover is covered the piston type thermopair in the inner chamber of fixed cover by cap nut.What be used to change the piston type thermopair changes the outfit that tube comprises the fitted tube sleeve pipe, change the outfit a set nut, end cap and pull bar, is provided with a set nut that changes the outfit at the front end of fitted tube sleeve pipe, is provided with end cap in the rear end of fitted tube sleeve pipe, and pull bar is arranged in the fitted tube sleeve pipe.
Beneficial effect: the present invention is a kind of thermocouple assembly that can online replacing, makes thermopair in actual use, in case damage, can online immediately (without blowing out) change.
The afterbody of piston type thermopair is different with the ordinary hot galvanic couple, is designed to piston structure, and it can be in thermopair fixed cover slides within.For guaranteeing slipper seal, be embedded with O type rubber ring on the piston.After the piston type thermopair inserts fixed cover, be positioned at the cap nut of afterbody by turning clockwise, piston type thermopair and fixed cover are connected and fixed closely.The internal piston of piston type thermopair afterbody is designed for the terminal box of wiring.
The thermopair fixed cover and the tube that changes the outfit are in order to guarantee the matching component of piston type thermopair operate as normal and online replacing.The function of fixed cover is: the first, and by its flange, realization is connected with process equipment interface (normally isolation ball valve).The second, finish and the fixedlying connected of hot piston type galvanic couple by cap nut.When three, changing the piston type thermopair,, realize and being connected an of internal thread that changes the outfit by the external thread interface of its afterbody.Caging bolt and visor are the parts on the fixed cover, and these two parts all are to be provided with for replacing and the handling safety that makes things convenient for the piston type thermopair.When the function of tube of changing the outfit was online replacing, the cylinder channel by the tube that changes the outfit provides the piston type thermopair to move played the safety effect when guaranteeing to change the outfit simultaneously.
The thermocouple protection Analysis of Nested Design becomes to be made up of two parts.Promptly constitute, reduced the possibility that the thermocouple protection cover damages by nonmetal protective sleeve and metal protection protector.
Description of drawings
Fig. 1 is the structural representation of piston type thermopair, wherein has: nonmetal thermocouple protective sleeve 11-A, metallic thermocouple protective sleeve 11-B, positioning sliding block 12, the afterbody 13 of piston structure, terminal box chamber 14, terminal box gland 15.
Fig. 2 is the structural representation of piston type thermopair fixed cover, wherein has: joint flange 21, positioning sliding block caging bolt 22, piston caging bolt 23, visor 24, body 25, cap nut 26.
Fig. 3 is the structural representation of the tube that changes the outfit of piston type thermopair, wherein has: fitted tube sleeve pipe 31, the set nut 32 that changes the outfit, end cap 33, pull bar 34.
Fig. 4 is the field erected synoptic diagram of piston type thermopair, wherein except piston type thermopair and piston type thermopair fixed cover, also have some miscellaneous equipments and the parts of erecting stage, wherein have: in first flange-interface 4, isolation ball valve 5, second flange-interface 6, nitrogen inlet 7, furnace wall 8, the inner lining of furnace 9.
Embodiment
The thermocouple protection cover: the thermocouple protection cover is the sleeve pipe that is used for protecting measuring sensor-thermocouple wire; because fire box temperature is very high; usually use resistant to elevated temperatures nonmetallic materials such as corundum; this class texture material is more crisp; when protective sleeve is longer; mechanical collision or extruding take place in the installation process, cause the protective sleeve fragmentation easily.Be the bulk strength of reinforcement thermocouple protection cover, reduce broken possibility takes place that we become to be made up of two parts with the thermocouple protection Analysis of Nested Design in installation process.Promptly this protective sleeve is that nonmetal thermocouple protective sleeve 11-A and metal protection protector are that metallic thermocouple protective sleeve 11-B constitutes by nonmetal protective sleeve.Wherein metal protection protector is made by resistant to elevated temperatures 2520 stainless steels, why can adopt metal material, is because there is protection nitrogen constantly to enter in the stove, makes the temperature of metal protection protector part be lower than 760 ℃.Nonmetal protective sleeve is made by corundum.Both connect by the special binder mode.According to the condition that reality is used, that the casing length of non-metallic part should be designed is short as far as possible.The length of common metal part is with half place of the thickness that is inserted into the furnace wall heat-insulation layer.
Positioning sliding block: the purpose of design of positioning sliding block is to guarantee that in installation process the center line of thermocouple sheath does not depart from the center line of the tube that changes the outfit.Can prevent in the installation process, owing to the sleeve pipe off-center of non-metallic part is run into the fragmentation that nozzle inner wall, valve internals and inboard wall of burner hearth cause.The position at positioning sliding block place before thermopair is installed the time is referring to Fig. 2.The material of positioning sliding block is 304 stainless steels or poly-tetrafluoro, and when thermopair was installed, positioning sliding block and piston type thermopair were together along moving (by using pull bar) to piston type thermopair fixed cover direction in the tube that changes the outfit.
The afterbody of piston structure: the piston type thermopair is designed to piston-shaped, is made by 304 stainless steels.Afterbody at piston structure is designed to cavity structure, to make things convenient for the wiring of thermopair.
The terminal box chamber: the terminal box chamber is designed in the afterbody of piston type thermopair, is fixed with a splicing ear in the terminal box chamber, by splicing ear thermocouple wire is connected with external signal wire.
Terminal box gland: in the design of the afterbody of terminal box chamber the terminal box gland of the circle of a metal is arranged, be connected with terminal box, play the effect of sealing the terminal box chamber by screw thread.Signal wire is drawn by the circular hole at terminal box gland center, the convenient connection.
The material of these several parts is 304 stainless steels, and shop drawings is referring to the drawing annex.
(this part-structure can be seen Fig. 3 to the composition of piston type thermopair fixed cover.)
Joint flange: the front end at piston type thermopair fixed cover has joint flange, its specification is identical with the ball valve flange, realization is connected with process equipment interface (normally isolation ball valve), and joint flange is to adopt carbon steel to make, and is welded on the front end of piston type thermopair fixed cover.
Positioning sliding block caging bolt: on piston type thermopair fixed cover, the positioning sliding block caging bolt is installed; be used to make positioning sliding block when the piston type thermopair is installed; because the effect of this caging bolt makes the stationkeeping of positioning sliding block; (by using pull bar) makes positioning sliding block can break away from the thermocouple protection cover when the rotation thermopair.
Piston caging bolt: on piston type thermopair fixed cover, the piston caging bolt is installed; this bolt principal security piston type thermopair is when changing the outfit; after pulling down cap nut, can not break away from fixed cover because of under the comprehensive pressure effect that is subjected to furnace gas and protection nitrogen.Thereby the harm that prevents poisonous gas leakage and cause.
Visor: on piston type thermopair fixed cover, dispose visor, can observe the position of thermopair in the installation and removal process by visor, to make things convenient for the replacing of piston type thermopair.Shop drawings is referring to the drawing annex.
Body: the sleeve pipe of piston type thermopair fixed cover plays a part fixing and supports thermopair.Sleeve pipe afterbody at the thermopair fixed cover has the external thread interface, when installing and change, realizes and being connected an of set nut that changes the outfit.Shop drawings is referring to the drawing annex.
Cap nut: after the installation of piston type thermopair was in place substantially, cap nut compressed hot piston type galvanic couple by the external thread of the sleeve pipe afterbody of fixed cover, guaranteed that the impermeability of thermopair integral body also prevents that dust from entering in the fixed cover.Shop drawings is referring to the drawing annex.
The piston type thermopair change the outfit the tube composition (the visible Fig. 4 of the structure of this part)
The jacket casing pipe changes the outfit: the jacket casing pipe that changes the outfit can support and the stationary heat galvanic couple, and to make things convenient for changing the outfit of piston type thermopair, this jacket casing pipe that changes the outfit is made by carbon steel.
A set nut changes the outfit: the piston type thermopair changes the outfit and a set nut that changes the outfit is housed on the tube, and this set nut can closely be connected the tube that changes the outfit with fixed cover, the cylinder channel that moves behind the formation piston type thermopair.
End cap: the change the outfit afterbody of tube of piston type thermopair is equipped with end cap, and this end cap also is the stop means of piston type thermopair, can prevent that thermopair breaks away from the tube that changes the outfit, to guarantee safety.
Pull bar: the piston type thermopair changes the outfit and is furnished with pull bar in the tube, can move and the rotary-piston type thermopair by promoting pull bar, thereby make things convenient for changing the outfit of thermopair.
Thermocoupleassemblycapable capable of being changed online is made up of thermopair and stationary installation, and described thermopair is a piston type thermopair 1, and stationary installation is fixed cover 2 and the tube 3 that changes the outfit that is used to change piston type thermopair 1; Wherein piston type thermopair 1 is by nonmetal thermocouple protective sleeve 11-A, metallic thermocouple protective sleeve 11-B, positioning sliding block 12, the afterbody 13 of piston structure, terminal box chamber 14, terminal box gland 15 is formed, nonmetal thermocouple protective sleeve 11-A is positioned at the front end of piston type thermopair 1, metallic thermocouple protective sleeve 11-B is positioned at the middle part of piston type thermopair 1, the front end sleeve of metallic thermocouple protective sleeve 11-B is in the rear end of nonmetal thermocouple protective sleeve 11-A, metallic thermocouple protective sleeve 11-B front end is with positioning sliding block 12 outward, be with the afterbody 13 of piston structure outside the metallic thermocouple protective sleeve 11-B rear end, the inner chamber of the afterbody 13 of piston structure is a terminal box chamber 14, is terminal box gland 15 in the rear end of the afterbody 13 of piston structure; Fixed cover 2 is enclosed within the outside of the afterbody 13 of piston structure, and the front end of fixed cover 2 is connected with first flange-interface 4 of external unit by joint flange 21, and the rear end of fixed cover 2 is covered piston type thermopair 1 in the inner chamber of fixed cover 2 by cap nut 26.Be used to change piston type thermopair 1 change the outfit that tube 3 comprises fitted tube sleeve pipe 31, the set nut 32 that changes the outfit, end cap 33 and pull bar 34, front end at fitted tube sleeve pipe 31 is provided with the set nut 32 that changes the outfit, be provided with end cap 33 in the rear end of fitted tube sleeve pipe 31, pull bar 34 is arranged in fitted tube sleeve pipe 31.
When changing thermopair, unclamp the cap nut on the fixed cover earlier, the piston type thermopair is broken away from and the fixedlying connected of fixed cover; Owing to be subjected to the effect of furnace gas and protection nitrogen comprehensive pressure (about 0.05Mpa), the piston type thermopair is outwards moved, under the restriction of caging bolt, the piston type thermopair can not break away from fixed cover, thereby prevents poisonous gas leakage.Next step is opened the terminal box gland and removes stube cable, and is again that the terminal box gland is first-class.Then piston type thermopair pull bar is connected with internal thread on the piston type thermopair tail wiring box gland, puts the tube that changes the outfit then, a set nut that will change the outfit is connected with fixed cover, forms the cylinder channel that moves behind the piston type thermopair.At this moment unscrew caging bolt, the position-limiting action of caging bolt is disappeared, thermopair can outwards move by the tube that changes the outfit, and the speed of moving outward depends on the friction force of cylinder and the size of vapour lock.Change the outfit pull bar on the end cap by the gap between hole and the pull bar, determined the size of vapour lock.An end cap that changes the outfit also is the stop means of piston type thermopair, can prevent that thermopair breaks away from the bucket that changes the outfit, to guarantee safety.The piston type thermopair cuts out isolation ball valve after extracting out immediately; The tube that will change the outfit is then pulled down, and then takes out out of order thermopair.If the piston type thermopair can not lean on the stove internal gas pressure to shift out, can use pull bar that it is extracted out.
The piston type thermopair that more renews is an opposite installation process.Because the length of thermopair is longer, can not run into the inwall (comprising in ball hole inwall, equipment upper flange nozzle inner wall and the inner lining of furnace of barrel inwall that changes the outfit, fixed cover inwall, ball valve) of changing passage when mounted for the very crisp corundum sleeve pipe of assurance quality and rupture, must make whole galvanic couple that concentricity is preferably arranged in the passage that changes the outfit.For this reason, designed (with one heart) positioning sliding block in apparatus of the present invention.The internal thread of the positioning sliding block that the piston type thermopair uses will be installed earlier to be connected with external thread on the galvanic couple protection metal pipe; it and piston type thermopair are pushed the tube that changes the outfit together; to change the outfit then the tube and fixed cover connect; slowly open isolation ball valve again; then promote pull bar, thermopair is pushed to the fixed cover direction.When slide block will advance to the fixed cover top, owing to stopping of slide block caging bolt, thermopair can not continue to advance, and at this moment should make the slide block caging bolt that puts in the fixed cover enter the slide block stopper slot by the rotation of pull bar.Slide block will touch the fixed cover top and can not continue rotation like this, and along with the continuation rotation of pull bar, the screw thread on the protecting tube will break away from slide block, after this just can continue to push.When the front air cylinder of observing thermopair from visor passes through visor, caging bolt is tightened, make spacing generation effect.Pull down the tube that changes the outfit then, stube cable is positioned at the cap nut of afterbody at last by turning clockwise, piston type thermopair and fixed cover are connected and fixed closely.In whole replacing process, protection nitrogen cannot be closed.
Like this,, just can carry out online replacing, make things convenient for on-the-spot maintenance this novel piston formula thermopair by the fixed cover and the tube that changes the outfit.
Claims (2)
1. a thermocoupleassemblycapable capable of being changed online is made up of thermopair and stationary installation, it is characterized in that described thermopair is piston type thermopair (1), and stationary installation is fixed cover (2) and the tube (3) that changes the outfit that is used to change piston type thermopair (1); Wherein piston type thermopair (1) is by nonmetal thermocouple protective sleeve (11-A), metallic thermocouple protective sleeve (11-B), positioning sliding block (12), the afterbody of piston structure (13), terminal box chamber (14), terminal box gland (15) is formed, nonmetal thermocouple protective sleeve (11-A) is positioned at the front end of piston type thermopair (1), metallic thermocouple protective sleeve (11-B) is positioned at the middle part of piston type thermopair (1), the front end sleeve of metallic thermocouple protective sleeve (11-B) is connected on the rear end of nonmetal thermocouple protective sleeve (11-A), metallic thermocouple protective sleeve (11-B) front end is with positioning sliding block (12) outward, be with the afterbody (13) of piston structure outside metallic thermocouple protective sleeve (11-B) rear end, the inner chamber of the afterbody of piston structure (13) is terminal box chamber (14), is terminal box gland (15) in the rear end of the afterbody (13) of piston structure; Fixed cover (2) is enclosed within the outside of the afterbody (13) of piston structure, the front end of fixed cover (2) is connected with first flange-interface (4) of external unit by joint flange (21), and the rear end of fixed cover (2) is covered piston type thermopair (1) in the inner chamber of fixed cover (2) by cap nut (26).
2. thermocoupleassemblycapable capable of being changed online according to claim 1, it is characterized in that being used to changing piston type thermopair (1) change the outfit that tube (3) comprises fitted tube sleeve pipe (31), the set nut (32) that changes the outfit, end cap (33) and pull bar (34), front end at fitted tube sleeve pipe (31) is provided with the set nut (32) that changes the outfit, be provided with end cap (33) in the rear end of fitted tube sleeve pipe (31), pull bar (34) is arranged in fitted tube sleeve pipe (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100983412A CN100498251C (en) | 2006-12-12 | 2006-12-12 | Thermocoupleassembly capable of being changed online |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100983412A CN100498251C (en) | 2006-12-12 | 2006-12-12 | Thermocoupleassembly capable of being changed online |
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| Publication Number | Publication Date |
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| CN101017112A true CN101017112A (en) | 2007-08-15 |
| CN100498251C CN100498251C (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100983412A Expired - Fee Related CN100498251C (en) | 2006-12-12 | 2006-12-12 | Thermocoupleassembly capable of being changed online |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322971A (en) * | 2011-08-16 | 2012-01-18 | 西安热工研究院有限公司 | Long service life wall temperature measuring device of boiler tube in boiler |
| CN105316644A (en) * | 2015-11-20 | 2016-02-10 | 苏州赛森电子科技有限公司 | Thermocouple protecting device for semiconductor evaporation table |
| CN108195475A (en) * | 2018-02-07 | 2018-06-22 | 无锡华光锅炉股份有限公司 | A kind of mounting structure of hearth thermocouple |
| CN111702685A (en) * | 2020-07-24 | 2020-09-25 | 杭州华电半山发电有限公司 | Mounting tool and mounting method for exhaust thermocouple of gas turbine |
| CN112525366A (en) * | 2020-11-27 | 2021-03-19 | 中国航发四川燃气涡轮研究院 | Air suction type pluggable thermocouple probe for engine air inlet total temperature dynamic distortion test |
| CN113340445A (en) * | 2021-06-17 | 2021-09-03 | 宁夏莫克仪表科技有限公司 | Double-pivot multi-thermocouple |
| CN113432736A (en) * | 2021-06-22 | 2021-09-24 | 西安热工研究院有限公司 | Casing pipe capable of replacing temperature measuring points of penultimate and last-stage blades on line |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4385197A (en) * | 1980-11-28 | 1983-05-24 | Pneumo Corporation | Multipoint thermocouple assembly |
| US4510343A (en) * | 1984-04-09 | 1985-04-09 | Sivyer Robert B | Thermowell apparatus |
-
2006
- 2006-12-12 CN CNB2006100983412A patent/CN100498251C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322971A (en) * | 2011-08-16 | 2012-01-18 | 西安热工研究院有限公司 | Long service life wall temperature measuring device of boiler tube in boiler |
| CN102322971B (en) * | 2011-08-16 | 2014-07-16 | 西安热工研究院有限公司 | Long service life wall temperature measuring device of boiler tube in boiler |
| CN105316644A (en) * | 2015-11-20 | 2016-02-10 | 苏州赛森电子科技有限公司 | Thermocouple protecting device for semiconductor evaporation table |
| CN108195475A (en) * | 2018-02-07 | 2018-06-22 | 无锡华光锅炉股份有限公司 | A kind of mounting structure of hearth thermocouple |
| CN111702685A (en) * | 2020-07-24 | 2020-09-25 | 杭州华电半山发电有限公司 | Mounting tool and mounting method for exhaust thermocouple of gas turbine |
| CN111702685B (en) * | 2020-07-24 | 2024-03-22 | 杭州华电半山发电有限公司 | Mounting tool and mounting method for gas turbine exhaust thermocouple |
| CN112525366A (en) * | 2020-11-27 | 2021-03-19 | 中国航发四川燃气涡轮研究院 | Air suction type pluggable thermocouple probe for engine air inlet total temperature dynamic distortion test |
| CN113340445A (en) * | 2021-06-17 | 2021-09-03 | 宁夏莫克仪表科技有限公司 | Double-pivot multi-thermocouple |
| CN113340445B (en) * | 2021-06-17 | 2022-05-17 | 宁夏莫克仪表科技有限公司 | Double-branch multipoint thermocouple |
| CN113432736A (en) * | 2021-06-22 | 2021-09-24 | 西安热工研究院有限公司 | Casing pipe capable of replacing temperature measuring points of penultimate and last-stage blades on line |
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| Publication number | Publication date |
|---|---|
| CN100498251C (en) | 2009-06-10 |
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Granted publication date: 20090610 Termination date: 20131212 |