CN102305671A - Wear-resisting thermoelectric couple used for catalytic cracking unit - Google Patents
Wear-resisting thermoelectric couple used for catalytic cracking unit Download PDFInfo
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- CN102305671A CN102305671A CN201110204824A CN201110204824A CN102305671A CN 102305671 A CN102305671 A CN 102305671A CN 201110204824 A CN201110204824 A CN 201110204824A CN 201110204824 A CN201110204824 A CN 201110204824A CN 102305671 A CN102305671 A CN 102305671A
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- thermopair
- sleeve pipe
- temperature element
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Abstract
The invention provides a wear-resisting thermoelectric couple used for a catalytic cracking unit, comprising a temperature measuring element and a temperature measuring element casing pipe, wherein the temperature measuring element casing pipe comprises a wash surface; a protective wall is arranged outside the temperature measuring element casing pipe; and the protective wall is used for covering the wash surface of the temperature measuring element casing pipe at least. Compared with the prior art, the thermoelectric couple has long service life and can be widely used for measuring the temperature of the catalytic cracking unit.
Description
Technical field
The present invention relates to a kind of temperature measuring equipment, especially for the temperature measuring equipment of measuring the catalytic cracking unit internal temperature.
Background technology
Catalytic cracking is one of petroleum refining process, is under the effect of heat and catalyzer, to make mink cell focus generation cracking reaction, changes the process of products such as cracked gas, gasoline and diesel oil into.
The temperature element of temperature in the measurement mechanism need be set, with the process of monitoring catalytic cracking in the device that carries out catalytic cracking.The main measuring isothermal segment of present this temperature element adopts thermopair.The principle of work of thermopair is based on thermoelectric effect.Thermoelectric effect is meant when two kinds of different metallic end points connect into a closed-loop path, if between two metal endpoints temperature difference is arranged, then in this closed-loop path, can produce electric current.The higher metal endpoints of temperature is called hot junction, often is set at the thermometric place; The metal endpoints that temperature is lower is called cold junction, the output terminal of Chang Zuowei thermopair, and its output signal is converted into the temperature value that can read.
When catalytic cracking unit was in running order, its inner environment was: working temperature is at 550 ℃-750 ℃; The about 0.018MPa of working pressure; The flow velocity of internal flow medium is 10-20m/s, reaches as high as 30-60m/s; Catalyzer hardness IIV1700-2200 in the interior media.This shows that thermopair should possess suitable wearing quality washing away with reply working environment medium.For this reason; Thermocouple temperature measurement part (or being called temperature element) cover that often will extend in the interior medium of catalytic cracking unit is loaded onto the temperature element sleeve pipe; Be coated with coating rubbing-layer again on the temperature element sleeve pipe matrix, resist washing away of medium, thereby prolong the serviceable life of temperature element with the temperature element sleeve pipe.
Existing thermopair adopts the scheme of temperature element sleeve pipe to have following problem: the serviceable life of temperature element sleeve pipe is not high, needs the frequent change sleeve pipe or changes whole thermopair because expire the serviceable life of temperature element sleeve pipe, and cost is high.
Summary of the invention
In order to solve the temperature element sleeve pipe not high problem in serviceable life that existing thermopair exists, the invention provides a kind of abrasion resistant thermocouple that is used for catalytic cracking unit, prolonged the serviceable life of temperature element sleeve pipe.
Technical scheme of the present invention is following:
A kind of abrasion resistant thermocouple that is used for catalytic cracking unit; Comprise temperature element and temperature element sleeve pipe; Said temperature element sleeve pipe has the wash surface of being subjected to, and is outside equipped with protection walls at said temperature element sleeve pipe, and said protection walls hides said temperature element sleeve pipe at least and is subjected to wash surface.
Preferably, said protection walls adopts angle steel, and said angle steel hides said temperature element sleeve pipe and is subjected to wash surface.
Preferably, said temperature element is an armoured thermocouple.
Preferably, the wash surface that is subjected to of said protection walls is provided with the wear Protection layer.
Preferably, said temperature element sleeve pipe is outside equipped with the sleeve pipe wearing layer, and the thickness of said sleeve pipe wearing layer is the 1.5-3.5 millimeter.
Preferably, the thickness of said wear Protection layer is the 0.3-1 millimeter.
Preferably, the surface that said catalytic cracking unit appeared outward after said thermopair was installed is provided with the sign that the said protection walls of indication is subjected to the wash surface direction.
Preferably, above said temperature element sleeve pipe, be connected with at a distance from leaking packoff.
Preferably, saidly comprise at least two threaded connectors that link together at a distance from leaking packoff, the said threaded connector that links together has and holds the through hole that said temperature element passes, and between said threaded connector, is provided with sealant.
Preferably, said sealant is sealing gasket or airtight and watertight padding, and said sealant is graphite material or stainless steel.
Preferably, protect connecting pipe said above the leakage packoff, being connected with, said armoured thermocouple passes the said protection connecting pipe of going up.
Preferably, on said, be provided with lining in the protection connecting pipe, said lining and the said protection connecting pipe of going up weld.
Preferably, it is pullover that said armoured thermocouple protection connecting pipe on said partly is set with encapsulating; Be filled with epoxy glue or high-temp glue in said encapsulating is pullover.
Preferably, the pullover upper end of said encapsulating is provided with the wiring lead-in wire, and said wiring lead-in wire is connected with said armoured thermocouple.
Preferably, said lining and the said encapsulating clearance distance between pullover is smaller or equal to 0.1 millimeter.
Preferably, between the pullover and said lining of said encapsulating, be provided with dust-proof seal ring.
Technique effect of the present invention:
The present invention is provided with one deck protection walls again outside the temperature element sleeve pipe of thermopair.MEDIA FLOW in catalytic cracking unit only has the part face (being subjected to wash surface) of temperature element sleeve pipe to receive washing away of medium to being a definite direction in other words.Utilize protection walls to hide and be subjected to wash surface, just can realize the effective protection to the temperature element sleeve pipe, prolong the serviceable life of temperature element sleeve pipe, simultaneously, the temperature element sleeve pipe can also keep carrying out effective thermometric with contacting of medium.
Description of drawings
Fig. 1 is the structure cut-open view of thermopair of the present invention.
Fig. 2 is the right view of thermopair shown in Figure 1.
Fig. 3 is the left view of thermopair shown in Figure 1.
Fig. 4 is the rear view of thermopair shown in Figure 1.
Fig. 5 is the vertical view of thermopair shown in Figure 1.
Fig. 6 is the upward view of thermopair shown in Figure 1.
Identifier declaration is following among the figure:
1, terminal block; 2, at a distance from leaking packoff; 3, sleeve pipe; 4, sleeve pipe wearing layer; 5, cable grip tightening seal joint; 6, temperature element; 7, flange; 8, protection walls; 9, protection walls wearing layer; 10, sign; 11, encapsulating is pullover; 12, protect connecting pipe on; 13, rubber seal; 14, dust-proof seal ring; 15, lining; 16, wiring lead-in wire.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is elaborated.
Fig. 1 has shown the structure of thermopair of the present invention.Thermopair of the present invention is used for catalytic cracking unit, is included in the terminal box part of top, is provided with terminal block 1 in the terminal box, and terminal block 1 will be connected with the lead of temperature element 6 from the lead that cable grip tightening seal joint 5 is introduced.Terminal box is to be processed by aluminium alloy or stainless steel material, be applicable to inflammable, explosive, the fire hazard environment.Temperature element 6 is an armoured thermocouple in the present embodiment.
On sleeve pipe 3, also being welded with flange 7, is the full penetration welded structure between sleeve pipe 3 and the flange 7.Flange 7 is used for subsidiary book invention thermopair and is installed in catalytic cracking unit.
Fluid media (medium) is a uniflux from bottom to top in catalytic cracking unit; Therefore sleeve pipe 3 only receives washing away of medium in some surface; If the protection that this part surface is further enhanced, the serviceable life that just can improve thermopair of the present invention effectively.In order to realize this goal, the present invention is provided with protection walls 8 and covers in the wash surface that is subjected to of surveying sleeve pipe 3, with block media washing away sleeve pipe 3.In conjunction with Fig. 2, Fig. 3, Fig. 4 and Fig. 6, in instance shown in Figure 1, protection walls 8 adopts angle steel.One end of protection walls 8 is welded on the flange 7, the parallel axes of the major axis of protection walls 8 and sleeve pipe 3.Because catalytic cracking unit medium flow direction can foresee, therefore, the wash surface that is subjected to of sleeve pipe 3 also can confirm in advance, and the appropriate location that protection walls 8 can be welded on flange 7 is subjected to effectively blocking of wash surface to form to sleeve pipe 3.Those skilled in the art can know, as long as the wash surface that is subjected to of temperature element sleeve pipe 3 can be effectively blocked in the setting of protection walls 8, can realize the object of the invention; Therefore; The set-up mode of protection walls 8, as: be connected on the flange 7 or sleeve pipe 3 first-class, be not the present invention to limit.In addition, those skilled in the art can also know, and except that angle steel, semicircle pipe or channel-section steel also can be used as the selection of protection walls 8, realize the object of the invention.Certainly, select for use angle steel also to have following advantage: because the exterior angle of angle steel is towards the fluid media (medium) source direction, the both sides of can effectively fluid media (medium) being led reduce the impact of medium to angle steel, further prolong the serviceable life of angle steel (protection walls).
Equally, in order to improve the serviceable life of protection walls 8, be subjected to wash surface (promptly receiving the medium wash surface) to be coated with protection walls wearing layer 9 in protection walls 8.Protection walls wearing layer 9 adopts following mode to form: built-up welding or spraying cobalt-base alloys, nickel-base alloy, titanizing tungsten or ceramic-metallic aluminium oxide or chromium oxide.Protection walls wearing layer 9 hardness are high, and wearing quality is good, and anti-pressure ability is strong, and anti-washing away is corrosion-resistant, and heat shock resistance is good, wear-resistant grain wearing and tearing.The thickness of protection walls wearing layer 9 is parameters must controlling.If the thickness of protection walls wearing layer 9 is thin excessively, then can not satisfy the requirement of wearing quality, or the process redundancy that there is no need; If the thickness of protection walls wearing layer 9 is blocked up, not only waste material sprays and adds and in protection walls wearing layer 9, understands generation stress man-hour, seriously undermines the bond strength of protection walls wearing layer 9 and protection walls 8, even causes both peeling off.Protection walls wearing layer 9 preferred thickness are between the 0.3-1.0 millimeter.Corresponding with the length of aforementioned temperature element sleeve pipe 3 wearing layers, protection walls wearing layer 9 is decided to be the 150-300 millimeter in the length of temperature element 6 axis directions according to the reactor and the regenerator installation position of refinery catalytic cracking unit.
Between terminal box and sleeve pipe 3, also be provided with at a distance from leaking packoff, anti-heads.In conjunction with Fig. 2 to Fig. 4, the concrete structure at a distance from leakage packoff 2 of visible instance shown in Figure 1: comprise at least two threaded connectors that link together, two threaded connector tool through holes that this links together, temperature element 6 passes from this through hole; Between these two threaded connectors, be provided with sealing gasket or airtight and watertight padding as sealant.Sealing gasket or airtight and watertight padding at a distance from leaking packoff 2 employings are graphite material or stainless steel.
Visible from Fig. 5, be apparent on the surface outside the catalytic cracking unit (manifesting after the thermopair installation surface) at flange 7 and be provided with sign 10, sign 10 has indicated protection walls 8 to be subjected to the direction of wash surface.Because protection walls 8 extend in the catalytic cracking unit when the present invention installed, and is invisible, and need therefore 100 fens necessity of sign be set with protection walls wearing layer 9 accurately towards the medium source direction.Except sign 10 is set on flange 7, can also (for example terminal box surface) be set on other surfaces that thermopair of the present invention is emerging in outside the catalytic cracking unit, all can realize the purpose in indication protection walls wearing layer 9 orientation.
In Fig. 1, can see, on protect connecting pipe 12 1 ends to be threaded with terminal box, the other end be threaded at a distance from leaking packoff 2.Last protection connecting pipe 12 embedded linings 15, lining 15 and last protection connecting pipe 12 welding.Encapsulating pullover 11 is set in lining 15.Encapsulating pullover 11 is in order to be provided with temperature element 6 sealed insulations, and suit temperature element 6 is in last protection connecting pipe 12 parts.Be full of fluid sealant (epoxy glue or high-temp glue) in the encapsulating pullover 11, make temperature element 6 sealed insulations.Gap between lining 15 and the encapsulating pullover 11 is smaller or equal to 0.1 millimeter.
In the upper end of encapsulating pullover 11, promptly terminal block 1 this end is provided with wiring lead-in wire 16, and wiring lead-in wire 16 is connected with encapsulating pullover 11 interior temperature elements 6, and passes terminal block 1 (material of terminal block 1 is pottery or bakelite), is connected with binding post on the terminal block 1.
Dust-proof seal ring 14 is provided with between encapsulating pullover 11 and lining 15, plays sealing function.
It should be noted that; The above only is preferred embodiment of the present invention; Be not so limit scope of patent protection of the present invention, the present invention can also carry out the improvement of material and structure to the structure of above-mentioned various parts, or adopts the technical equivalents thing to replace.So the equivalent structure that all utilizations instructions of the present invention and diagramatic content are done changes, or directly or indirectly apply to other correlative technology fields and all in like manner all be contained in the scope that the present invention contains.
Claims (16)
1. abrasion resistant thermocouple that is used for catalytic cracking unit; Comprise temperature element and temperature element sleeve pipe; Said temperature element sleeve pipe has the wash surface of being subjected to; It is characterized in that: be outside equipped with protection walls at said temperature element sleeve pipe, said protection walls hides said temperature element sleeve pipe at least and is subjected to wash surface.
2. according to the said thermopair of claim 1, it is characterized in that: said protection walls adopts angle steel, and said angle steel hides said temperature element sleeve pipe and is subjected to wash surface.
3. according to claim 1 or 2 said thermopairs, it is characterized in that: said temperature element is an armoured thermocouple.
4. according to the said thermopair of claim 3, it is characterized in that: the wash surface that is subjected to of said protection walls is provided with the wear Protection layer.
5. according to the said thermopair of claim 4, it is characterized in that: said temperature element sleeve pipe is outside equipped with the sleeve pipe wearing layer, and the thickness of said sleeve pipe wearing layer is the 1.5-3.5 millimeter.
6. according to the said thermopair of claim 4, it is characterized in that: the thickness of said wear Protection layer is the 0.3-1 millimeter.
7. according to the said thermopair of claim 4, it is characterized in that: the surface that said catalytic cracking unit appeared outward after said thermopair was installed is provided with the sign that the said protection walls of indication is subjected to the wash surface direction.
8. according to the said thermopair of claim 4, it is characterized in that: above said temperature element sleeve pipe, be connected with at a distance from leaking packoff.
9. said according to Claim 8 thermopair; It is characterized in that: the said separated packoff that leaks comprises at least two threaded connectors that link together; The said threaded connector that links together has and holds the through hole that said temperature element passes, and between said threaded connector, is provided with sealant.
10. according to the said thermopair of claim 9, it is characterized in that: said sealant is sealing gasket or airtight and watertight padding, and said sealant is graphite material or stainless steel.
11. according to the said thermopair of claim 10, it is characterized in that: protect connecting pipe said above the leakage packoff, being connected with, said armoured thermocouple passes the said protection connecting pipe of going up.
12. according to the said thermopair of claim 11, it is characterized in that: on said, be provided with lining in the protection connecting pipe, said lining and the said protection connecting pipe of going up weld.
13. according to the said thermopair of claim 12, it is characterized in that: it is pullover that said armoured thermocouple protection connecting pipe on said partly is set with encapsulating; Be filled with epoxy glue or high-temp glue in said encapsulating is pullover.
14. according to the said thermopair of claim 13, it is characterized in that: the pullover upper end of said encapsulating is provided with the wiring lead-in wire, and said wiring lead-in wire is connected with said armoured thermocouple.
15. according to the said thermopair of claim 13, it is characterized in that: the clearance distance between said lining and said encapsulating are pullover is smaller or equal to 0.1 millimeter.
16., it is characterized in that: between the pullover and said lining of said encapsulating, be provided with dust-proof seal ring according to the said thermopair of claim 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110204824A CN102305671A (en) | 2011-07-21 | 2011-07-21 | Wear-resisting thermoelectric couple used for catalytic cracking unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110204824A CN102305671A (en) | 2011-07-21 | 2011-07-21 | Wear-resisting thermoelectric couple used for catalytic cracking unit |
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| Publication Number | Publication Date |
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| CN102305671A true CN102305671A (en) | 2012-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110204824A Pending CN102305671A (en) | 2011-07-21 | 2011-07-21 | Wear-resisting thermoelectric couple used for catalytic cracking unit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568200A (en) * | 2015-01-04 | 2015-04-29 | 安徽蓝德仪表有限公司 | Anti-explosion platinum thermal resistor |
| CN108181011A (en) * | 2017-12-08 | 2018-06-19 | 安徽蓝润自动化仪表有限公司 | A kind of fluid erosion prevention high life lifts multipoint acquisition formula thermocouple certainly |
| CN108254093A (en) * | 2017-12-08 | 2018-07-06 | 安徽蓝润自动化仪表有限公司 | A kind of adjustable fluid erosion prevention lifts thermocouple certainly |
| CN108593125A (en) * | 2018-03-28 | 2018-09-28 | 新兴能源装备股份有限公司 | A kind of thermocouple protection tube |
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| CN2907850Y (en) * | 2006-05-30 | 2007-06-06 | 栗小锋 | Wear resistant support of electric power plant desulfure absorption tower |
| CN101493361A (en) * | 2009-02-17 | 2009-07-29 | 乐清市伦特仪表有限公司 | Pyrolysis furnace COT thermocouple anti-degrading and anti-coking sleeve pipe |
| CN201297963Y (en) * | 2008-11-28 | 2009-08-26 | 重庆迪洋仪表有限责任公司 | Catalytic cracking wear-resistant thermocouple |
| CN201514290U (en) * | 2009-10-09 | 2010-06-23 | 吴方立 | Anti-scour wear-resisting thermocouple for measuring cracking furnace COT |
| CN202195895U (en) * | 2011-07-21 | 2012-04-18 | 吴方立 | Wear resistant thermocouple used for catalytic cracking apparatus |
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2011
- 2011-07-21 CN CN201110204824A patent/CN102305671A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2907850Y (en) * | 2006-05-30 | 2007-06-06 | 栗小锋 | Wear resistant support of electric power plant desulfure absorption tower |
| CN201297963Y (en) * | 2008-11-28 | 2009-08-26 | 重庆迪洋仪表有限责任公司 | Catalytic cracking wear-resistant thermocouple |
| CN101493361A (en) * | 2009-02-17 | 2009-07-29 | 乐清市伦特仪表有限公司 | Pyrolysis furnace COT thermocouple anti-degrading and anti-coking sleeve pipe |
| CN201514290U (en) * | 2009-10-09 | 2010-06-23 | 吴方立 | Anti-scour wear-resisting thermocouple for measuring cracking furnace COT |
| CN202195895U (en) * | 2011-07-21 | 2012-04-18 | 吴方立 | Wear resistant thermocouple used for catalytic cracking apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568200A (en) * | 2015-01-04 | 2015-04-29 | 安徽蓝德仪表有限公司 | Anti-explosion platinum thermal resistor |
| CN108181011A (en) * | 2017-12-08 | 2018-06-19 | 安徽蓝润自动化仪表有限公司 | A kind of fluid erosion prevention high life lifts multipoint acquisition formula thermocouple certainly |
| CN108254093A (en) * | 2017-12-08 | 2018-07-06 | 安徽蓝润自动化仪表有限公司 | A kind of adjustable fluid erosion prevention lifts thermocouple certainly |
| CN108593125A (en) * | 2018-03-28 | 2018-09-28 | 新兴能源装备股份有限公司 | A kind of thermocouple protection tube |
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| C06 | Publication | ||
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wu Jiate Inventor after: Wu Fangli Inventor after: Chen Jing Inventor after: Yang Haiyan Inventor before: Wu Jiate Inventor before: Wu Fangli Inventor before: Chen Jing Inventor before: Yang Haiyan Inventor before: Lin Jinping Inventor before: Huang Man |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WU JIATE WU FANGLI CHEN JING YANG HAIYAN LIN JINPING HUANG MAN TO: WU JIATE WU FANGLI CHEN JING YANG HAIYAN |
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Application publication date: 20120104 |