CN207147660U - The rigid thermocouple that can be lain in a horizontal plane in stove - Google Patents
The rigid thermocouple that can be lain in a horizontal plane in stove Download PDFInfo
- Publication number
- CN207147660U CN207147660U CN201721167571.XU CN201721167571U CN207147660U CN 207147660 U CN207147660 U CN 207147660U CN 201721167571 U CN201721167571 U CN 201721167571U CN 207147660 U CN207147660 U CN 207147660U
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- Prior art keywords
- sleeve pipe
- thermocouple
- hole
- thermocouple wire
- protection sleeve
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Abstract
The utility model discloses a kind of rigid thermocouple that can be lain in a horizontal plane in stove, including terminal box, temperature transmitter, protection sleeve pipe, four hole earthenwares, connection component and thermocouple wire；Temperature transmitter is placed in terminal box; protection sleeve pipe is fixedly connected in terminal box; the thermometric end of thermocouple wire is welded after passing through the through hole of four hole earthenwares; the other end of thermocouple wire electrically connects with temperature transmitter; four hole earthenwares are placed in protection sleeve pipe; connection component is fixed on outside protection sleeve pipe, also has carborundum sleeve pipe between protection sleeve pipe and four hole earthenwares, carborundum sleeve pipe top is fixedly connected by ceramic glue with protection sleeve pipe.The thermocouple has stronger heat resistance, and in high temperature environments, protection sleeve pipe is not susceptible to deform, available for horizontal positioned or slant setting in test system.
Description
Technical field
It the utility model is related to temperature thermocouple, and in particular to a kind of rigid thermoelectricity that can be lain in a horizontal plane in stove
It is even.
Background technology
Thermocouple is usually used in carrying out the temperature survey of various instruments in industry, in order to accurately judge high temperature furnace,
Or the actual temperature in some equipment, often thermocouple is not to prolong vertical angle installation downwards and place, but needs root
Factually thermocouple is carried out horizontal positioned, slant setting by the thermometric requirement on border, even upside down.When thermocouple is in not
When being that vertical angle is installed downwards, due to treating that temperature is higher in temperature measuring equipment, more than 1000 degree are commonly reached, higher temperature meeting
So that the protection sleeve pipe of thermocouple rigidly reduces, simultaneously because the impact of the gravity of protection sleeve pipe itself or the liquid of test system
Effect, will make the protection sleeve pipe flexural deformation of thermocouple, temperature measurement accuracy is influenceed, if flexural deformation is excessive, in protection sleeve pipe
The thermometric end of thermocouple wire may produce solder joint cracking, cause the damage of thermocouple.
Utility model content
The utility model proposes a kind of rigid thermocouple that can be lain in a horizontal plane in stove for problem above, and it has
Have still has higher rigidity in high temperature environments, is not susceptible to flexural deformation, ensure that the temperature measurement accuracy of thermocouple, while
Avoid the damage of thermocouple thermocouple caused by flexural deformation at high temperature.
The technological means that the utility model uses is as follows：
A kind of rigid thermocouple that can be lain in a horizontal plane in stove, including terminal box, temperature transmitter, protection sleeve pipe,
Four hole earthenwares, connection component and thermocouple wire；The temperature transmitter is placed in the terminal box, and the protection sleeve pipe is consolidated
Surely it is connected in the terminal box, the thermometric end of the thermocouple wire is described through welding after the through hole of four hole earthenware
The other end of thermocouple wire is electrically connected with the temperature transmitter, and four hole earthenware is placed in the protection sleeve pipe, described
Connection component is fixed on outside the protection sleeve pipe, also has carborundum set between the protection sleeve pipe and four hole earthenware
Pipe, the carborundum sleeve pipe top is fixedly connected by ceramic glue with the protection sleeve pipe；
Further, the external diameter of the carborundum sleeve pipe is less than the internal diameter of the protection sleeve pipe, the carborundum sleeve pipe
Length is less than the length of protection sleeve pipe, and the length of the carborundum sleeve pipe is less than the length of four hole earthenware；
Further, the thermocouple wire includes the first thermocouple wire and use that are used to directly carry out temperature survey of lower end
The second thermocouple wire being transferred in the temperature for measuring first thermocouple wire on the temperature transmitter, second heat
The line footpath of thermocouple wire is less than the line footpath of first thermocouple wire, one end of first thermocouple wire and second thermocouple
It is placed in after one end argon arc welding connection of silk in the earthenware of four hole, the pad is placed in the earthenware of four hole, institute
State after the second thermocouple wire other end stretches out from the earthenware of four hole and be connected with the temperature transmitter；
Further, second thermocouple wire is cased with heat-shrink tube and glass fibers from one end that four hole earthenware stretches out
Dimension pipe, outside second thermocouple wire, the fiberglass pipe is enclosed on outside the heat-shrink tube shrinkable sleeve；
Further, the front end of four hole earthenware has a groove, and the thermometric end of the thermocouple wire is placed in described recessed
In groove；
Further, also it is wound with multistage insulating tape on the outer wall of four hole earthenware.
Compared with the prior art, the rigid thermocouple described in the utility model that can be lain in a horizontal plane in stove, it has
There is following beneficial effect：1st, carborundum sleeve pipe is fixed between protection sleeve pipe and four hole earthenwares, because carborundum has height
The advantages that warm intensity is big, high-temperature oxidation resistance is strong, abrasion resistance properties are good, heat endurance is good and the coefficient of expansion is small so that carborundum
Sleeve pipe plays a part of support tube in protection sleeve pipe, avoids protection sleeve pipe from occuring bending and deformation at high temperature；2nd, carborundum set
The external diameter of pipe is less than the internal diameter of protection sleeve pipe, and the length of carborundum sleeve pipe is less than the length of protection sleeve pipe so that carborundum sleeve pipe
Between protection sleeve pipe, carborundum sleeve pipe has gap with protection sleeve pipe front end, can avoid due to carborundum sleeve pipe and protection
Sleeve pipe causes mutually extruding to produce stress and destroy thermocouple in temperature changing process because of thermal coefficient of expansion difference；3rd, four holes are made pottery
The length of porcelain tube is more than carborundum casing length so that the thermometric end of thermocouple wire directly can be entered by protection sleeve pipe to the external world
Row thermometric, it ensure that the accuracy of thermometric.
Brief description of the drawings
Fig. 1 is the structure chart that the utility model is thermocouple；
Fig. 2 is the temperature transmitter wiring diagram of the utility model thermocouple；
Fig. 3 is the partial enlarged drawing at A in Fig. 1；
Fig. 4 is the structure chart of thermocouple wire in thermocouple；
Fig. 5 is the partial enlarged drawing at B in Fig. 4.
In figure：1st, terminal box, 2, temperature transmitter, 3, protection sleeve pipe, 4, four hole earthenwares, 5, connection component, 6, thermoelectricity
Thermo wires, 7, carborundum sleeve pipe, 31, end space, 41, groove, 42, insulating tape, 51, threaded portion, 52, screw portion, 53, sealing
Packing ring, the 61, first thermocouple wire, the 62, second thermocouple wire, 621, fiberglass pipe and heat-shrink tube, 71, adhesive tape, 72, ceramics
Glue.
Embodiment
As shown in Figure 1, Figure 2 and Figure 3, the disclosed rigid thermoelectricity that can be lain in a horizontal plane in stove of the present utility model
It is even, including terminal box 1, temperature transmitter 2, protection sleeve pipe 3, four hole earthenwares 4, connection component 5 and thermocouple wire 6；Temperature
Transmitter 2 is placed in terminal box 1, and terminal box 1 can use the structures such as BUZH terminal boxes, A types terminal box or Type B terminal box, protect
Protecting pipe 3 is the cannula-like structure that one end open one end is closed made of high temperature Steel material, and its openend, which is fixedly connected on, to be connect
In line box 1.The thermometric end of thermocouple wire 6 through four hole earthenwares 4 through hole after by argon arc welding together, four hole earthenwares
4 are placed in protection sleeve pipe 3, and the thermometric end of thermocouple wire 6 is placed in the front end of protection sleeve pipe 3, the other end and temperature of thermocouple wire 3
Transmitter 2 connects the electrical connection for realizing thermocouple wire 6 and temperature transmitter 2, the temperature that thermocouple wire 6 can measure thermometric end
It is delivered on temperature transmitter 2, and extraneous instrument is output to by temperature transmitter 2.Connection component 5 is fixed on outside protection sleeve pipe 3,
Connection component 5 can use the various procedures attachment structure such as adpting flange, threaded connection, it is preferable that using such as institute in Fig. 1
The structure shown, the lower end of connection component 5 are the upper end of threaded portion 51 and threaded portion 51 for ease of carrying out what thermocouple was screwed
Portion 52 is screwed, it is polygonized structure to screw portion 52, for the ease of being screwed using instruments such as spanners to it, screws portion 52 as six
Side shape structure, connection component 5, which is fixed in protection sleeve pipe 3, to be easy to thermocouple being fixed in test system to enter trip temperature survey
Amount, is further fixed on seal washer 53, gasket seal 53 can use red copper seal washer, in heat on the lower surface in the portion of screwing 52
When galvanic couple is fixed in test system, between red copper seal washer is in test system and screws portion, for entering to test system
The effects such as row sealing, decompression, increase friction and damping.In order to increase the rigidity of protection sleeve pipe 3 at high temperature, in protection sleeve pipe
3 and four also have carborundum sleeve pipe 7 between hole earthenware 4, and the top of carborundum sleeve pipe 7 is solid by ceramic glue 72 and protection sleeve pipe 3
Fixed connection, carborundum sleeve pipe 7 and the connection procedure of protection sleeve pipe 3 are as follows：1st, apart from the upper end certain distance of carborundum sleeve pipe 7
Opening position winds adhesive tape 71；2nd, the carborundum sleeve pipe 7 for being wound with adhesive tape 71 is filled in protection sleeve pipe 3, and in protection sleeve pipe 3
Ceramic glue 72 is injected in gap between carborundum sleeve pipe 7.Due to the certain distance of distance protection sleeve pipe 3 on carborundum sleeve pipe 7
Place is wound with adhesive tape 71, and adhesive tape 71 there is barrier effect can prevent ceramic glue 72 from penetrating into carborundum sleeve pipe 7 ceramic glue 72
In the gap of the lower end of protection sleeve pipe 3, while carborundum sleeve pipe 7 is fixed on the upper end of protection sleeve pipe 3 by ceramic glue 72.Protection sleeve pipe
The outside that 3 upper ends are typically disposed in test system has a relatively low temperature, thus ceramic glue can securely by carborundum sleeve pipe and
Protection sleeve pipe is fixed together.Simultaneously because carbofrax material has, elevated temperature strength is big, high-temperature oxidation resistance is strong, abrasion resistance properties
To get well, heat endurance is good and the performances such as the coefficient of expansion is small so that the rigidity in hot environment of carborundum sleeve pipe 7 will not also reduce, because
This carborundum sleeve pipe 7 is played a supporting role to protection sleeve pipe 3, can be avoided the flexural deformation of protection sleeve pipe 3 under hot environment and be drawn
The inaccurate even thermocouple of thermocouple temperature measurement is played to damage because of flexural deformation.
Because protection sleeve pipe 3 is different with the material of carborundum sleeve pipe 7, its thermal coefficient of expansion also differs, simultaneously because hot
Galvanic couple in the course of the work in the range of the larger difference variation (particularly by thermocouple under normal temperature, without the pre-heat treatment,
And in the case of to be mounted directly in high temperature).Therefore in order to avoid between thermocouple each several part caused by temperature change due to heat
Swollen shrinkage and cause mutually to produce extruding and cause to damage, the outside dimension of carborundum sleeve pipe 7 is less than the internal diameter chi of protection sleeve pipe 3
Very little, the length of carborundum sleeve pipe 7 is less than the length of protection sleeve pipe 3 so that has footpath between carborundum sleeve pipe 7 and protection sleeve pipe 3
To gap, the front end of carborundum sleeve pipe 7 and protection sleeve pipe 3 has end space 31, and radial clearance and end space 31 can be made
For the buffering area of thermal expansion process, avoid carborundum sleeve pipe 7 and protection sleeve pipe 3 from directly being contacted during expanded by heating, ensure
The bonding strength and service life of thermocouple.
Further, the length of four hole earthenwares 4 is more than the length of carborundum sleeve pipe 7, the leading sections of four hole earthenwares 4 from
Stretch out and be placed in the end space 31 between carborundum sleeve pipe 7 and protection sleeve pipe 3 in carborundum sleeve pipe 7, can so be ensured
The thermometric end of thermocouple wire 6 is acted directly on by the heat of protection sleeve pipe 3, ensure that temperature measurement accuracy.
Further, in order to ensure the insulation between the thermometric end of thermocouple wire 6 and protection sleeve pipe 3, four hole earthenwares 4
The both sides of leading section carry out cutting and form groove 41 respectively, and the thermometric end of thermocouple wire 6 is placed in groove 41, can prevent thermoelectricity
The thermometric end of thermo wires 6 directly contacts with protection sleeve pipe 3.
Further, as shown in Figure 4 and Figure 5, thermocouple wire 6 includes be used for directly progress temperature survey the first of lower end
Thermocouple wire 61 and the temperature for the first thermocouple wire 61 to be measured are transferred to the second thermocouple wire 62 of temperature transmitter 2,
First thermocouple wire 61 and the second thermocouple wire 62 by argon arc welding together with, pad is placed in four hole earthenwares 4.Second
Thermocouple wire 62 is connected on temperature transmitter 2 after being stretched out from four hole earthenwares 4, in order to increase the strong of the second thermocouple wire 62
Degree, avoids it from being bent and damaged during temperature transmitter is connected to, in the second thermocouple wire 62 from four hole earthenwares 4
The part of stretching is cased with heat-shrink tube and fiberglass pipe 621, shrinkable sleeve on thermocouple wire after carry out heating pyrocondensation, Ran Houtao
Upper fiberglass pipe.Heat-shrink tube and fiberglass pipe not only ensure that the insulating properties between thermocouple wire, while add it
Anti-wear performance.
First thermocouple wire 61 and the second thermocouple wire 62 have different line footpaths, and the first thermocouple wire 61 needs directly right
Test system carries out temperature survey, and its needs bears higher temperature, it is therefore desirable to has thicker line footpath, the second thermocouple wire
62 be to be delivered to for the temperature for measuring the first thermocouple wire 61 in temperature transmitter, while needs to switch in terminal box
Bent in journey, it is therefore desirable to which less line footpath is in order to installing and bend.
Further, because the material of four hole earthenwares 4 is more crisp, in order to avoid thermocouple is during transport or use
Because the reasons such as vibration damage four hole earthenwares 4, multistage insulating tape 42 is also wound with the outer wall of four hole earthenwares 4,
So that four hole earthenwares 4 are contacted by multistage insulating tape 42 with the internal diameter of carborundum sleeve pipe 7, insulating tape 42 plays vibration damping work
With reducing or eliminate the damage of the thermocouple because of caused by vibration.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art is in the technical scope that the utility model discloses, according to this practicality
New technical scheme and its inventive concept is subject to equivalent substitution or change, should all cover the scope of protection of the utility model it
It is interior.
Claims (7)
1. a kind of rigid thermocouple that can be lain in a horizontal plane in stove, including terminal box (1), temperature transmitter (2), protective case
Manage (3), four hole earthenwares (4), connection component (5) and thermocouple wire (6)；The temperature transmitter (2) is placed in the wiring
In box (1), the protection sleeve pipe (3) is fixedly connected in the terminal box (1), and the thermometric end of the thermocouple wire (6) passes through
Welded after the through hole of four hole earthenware (4), the other end and the temperature transmitter (2) of the thermocouple wire (6) are electrically connected
Connect, four hole earthenware (4) is placed in the protection sleeve pipe (3), and the connection component (5) is fixed on the protection sleeve pipe
(3) outside, it is characterised in that：Also there is carborundum sleeve pipe (7), institute between the protection sleeve pipe (3) and four hole earthenware (4)
Carborundum sleeve pipe (7) top is stated to be fixedly connected with the protection sleeve pipe (3) by ceramic glue (72).
2. the rigid thermocouple according to claim 1 that can be lain in a horizontal plane in stove, it is characterised in that：The carbonization
The external diameter of silicon sleeve pipe (7) is less than the internal diameter of the protection sleeve pipe (3), and the length of the carborundum sleeve pipe (7) is less than protection sleeve pipe
(3) length, the length of the carborundum sleeve pipe (7) are less than the length of four hole earthenware (4).
3. the rigid thermocouple according to claim 2 that can be lain in a horizontal plane in stove, it is characterised in that：The thermoelectricity
What thermo wires (6) included lower end is used for directly the first thermocouple wire (61) of progress temperature survey and for by first thermocouple
The temperature that silk (61) measures is transferred to the second thermocouple wire (62) on the temperature transmitter (2), second thermocouple wire
(62) line footpath is less than the line footpath of first thermocouple wire (61), one end and described second of first thermocouple wire (61)
It is placed in after one end argon arc welding connection of thermocouple wire (62) in four hole earthenware (4), the pad is placed in described four
In hole earthenware (4), the other end of second thermocouple wire (62) stretched out from four hole earthenware (4) after with the temperature
Spend transmitter (2) electrical connection.
4. the rigid thermocouple according to claim 3 that can be lain in a horizontal plane in stove, it is characterised in that：Described second
Thermocouple wire (62) is cased with fiberglass pipe and heat-shrink tube, the shrinkable sleeve from one end that four hole earthenware (4) stretches out
In second thermocouple wire (62) outside, the fiberglass pipe is enclosed on outside the heat-shrink tube.
5. the rigid thermocouple according to claim 1 that can be lain in a horizontal plane in stove, it is characterised in that：Four hole
The front end of earthenware (4) has groove (41), and the thermometric end of the thermocouple wire (6) is placed in the groove (41).
6. the rigid thermocouple according to claim 1 that can be lain in a horizontal plane in stove, it is characterised in that：Four hole
Multistage insulating tape (42) is also wound with the outer wall of earthenware (4).
7. the rigid thermocouple according to claim 1 that can be lain in a horizontal plane in stove, it is characterised in that：The connection
Threaded portion (51) and upper end of the component (5) including lower end screw portion (52), and the lower end for screwing portion (52) is further fixed on close
Seal washer (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721167571.XU CN207147660U (en) | 2017-09-12 | 2017-09-12 | The rigid thermocouple that can be lain in a horizontal plane in stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721167571.XU CN207147660U (en) | 2017-09-12 | 2017-09-12 | The rigid thermocouple that can be lain in a horizontal plane in stove |
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| Publication Number | Publication Date |
|---|---|
| CN207147660U true CN207147660U (en) | 2018-03-27 |
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ID=61667098
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721167571.XU Active CN207147660U (en) | 2017-09-12 | 2017-09-12 | The rigid thermocouple that can be lain in a horizontal plane in stove |
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| Country | Link |
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| CN (1) | CN207147660U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917961A (en) * | 2018-07-27 | 2018-11-30 | 中国核动力研究设计院 | A kind of cluster fuel assembly multiple spot wall temperature measurement device under moving condition |
-
2017
- 2017-09-12 CN CN201721167571.XU patent/CN207147660U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917961A (en) * | 2018-07-27 | 2018-11-30 | 中国核动力研究设计院 | A kind of cluster fuel assembly multiple spot wall temperature measurement device under moving condition |
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