CN212082641U - Connecting structure for compensating wire in heating furnace - Google Patents
Connecting structure for compensating wire in heating furnace Download PDFInfo
- Publication number
- CN212082641U CN212082641U CN202021019694.0U CN202021019694U CN212082641U CN 212082641 U CN212082641 U CN 212082641U CN 202021019694 U CN202021019694 U CN 202021019694U CN 212082641 U CN212082641 U CN 212082641U
- Authority
- CN
- China
- Prior art keywords
- heating furnace
- thermocouple
- compensation
- wire
- connection structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model provides a connecting structure of a compensation wire used in a heating furnace, which comprises a compensation wire, wherein the compensation wire is connected between a thermocouple and a measuring device, the thermocouple is arranged in the heating furnace, and the thermocouple is used for measuring the temperature in the heating furnace; the compensation lead comprises a thermocouple connecting end, the thermocouple connecting end is connected with one end of a thermocouple extending out of the heating furnace, and a heat insulation layer is arranged between the thermocouple connecting end and the heating furnace; the thermal insulation layer is arranged between the compensation lead and the thermocouple, so that the influence of thermal radiation of the heating furnace on the compensation lead is reduced as much as possible, the influence of premature aging of the compensation lead on thermoelectric characteristics is avoided, and the accuracy of temperature measurement is further ensured.
Description
Technical Field
The utility model belongs to the technical field of the compensation wire is connected, concretely relates to connection structure for compensation wire in heating furnace.
Background
A thermocouple for temperature measurement is arranged in the annular heating furnace, and the thermocouple is connected into an operation chamber capable of displaying the measurement result of the thermocouple through a compensation lead. The cold end of the thermocouple penetrates out of the furnace top of the annular heating furnace, and the compensation lead is directly connected with the cold end of the thermocouple at the furnace top of the annular heating furnace, so that the distance between the compensation lead and the furnace top is only 300 mm.
The above-described manner in which the thermocouple and the compensation wire are directly connected at the furnace top of the heating furnace has the following problems:
1. the compensation lead is relatively close to the furnace top, so that the influence of the heat radiation of the annular heating furnace is relatively large, the measurement result is influenced, and the compensation lead frequently fails due to long-time high-temperature environment;
2. because the hot end of the thermocouple is not effectively insulated, the joint of the compensating lead is easily damaged by baking, and the measuring result is influenced by short circuit or open circuit;
3. when the joint of the compensation lead generates faults, the fault occurrence point is positioned at the furnace top of the heating furnace, and when maintenance personnel process the faults at the furnace top, safety risks of scalding, sunstroke, falling from high altitude and the like exist.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a connection structure for compensating wire in heating furnace to overcome among the above-mentioned prior art compensating wire is influenced by the heat radiation great and leads to the unsafe problem of temperature measurement.
In order to achieve the above object, the present invention provides the following technical solutions:
a connection structure for a compensation wire in a heating furnace, the connection structure comprising a compensation wire connected between a thermocouple disposed in the heating furnace and a measuring device, the thermocouple being for measuring a temperature within the heating furnace;
the compensation lead comprises a thermocouple connecting end, the thermocouple connecting end is connected with one end, extending out of the heating furnace, of a thermocouple, and a heat insulation layer is arranged between the thermocouple connecting end and the heating furnace.
In the connection structure for the compensating wire in the heating furnace as described above, the heat insulating layer is preferably provided on the outer wall of the heating furnace.
In the above connection structure for the compensation lead wire in the heating furnace, preferably, the thermal insulation layer is a ceramic fiber blanket, and the thermocouple penetrates through the ceramic fiber blanket to be connected with the compensation lead wire.
In the above connection structure for the compensation lead in the heating furnace, preferably, the thermal insulation layer is a thermal insulation sleeve covering a connection portion between the compensation lead and the thermocouple.
In the above connection structure for compensating wires in a heating furnace, preferably, the heat insulating sleeve is made of asbestos.
According to the connection structure for the compensation lead in the heating furnace, as a preferable scheme, the heating furnace is an annular heating furnace, one end, far away from the thermocouple, of the compensation lead is provided with the compensation lead joint, and the compensation lead joint is located in the middle of a space surrounded by the annular heating furnace.
The connecting structure for the compensation wire in the heating furnace preferably further comprises a supporting frame, wherein the compensation wire is arranged on the supporting frame, and the supporting frame comprises a transverse frame and a vertical frame which are arranged in an L shape;
one end of the compensation lead connected with the thermocouple is positioned on the transverse frame;
and one end of the compensation lead, which is far away from the thermocouple, is positioned on the vertical frame.
According to the connection structure for the compensation conducting wire in the heating furnace, as a preferable scheme, the distance between the transverse frame and the top of the annular heating furnace is more than or equal to 1000mm, and the vertical frame is positioned in the middle of a space enclosed by the annular heating furnace.
The connection structure for the compensation wire in the heating furnace as described above is preferably that the compensation wire is fixed to the cold end of the thermocouple by means of a fixing screw.
As the above connection structure for the compensation wire in the heating furnace, as a preferable scheme, a protection structure is arranged at the periphery of the fixing screw;
the protection structure comprises a base and a protective cover, wherein the base is fixedly arranged at the cold end of the thermocouple, and the protective cover and the base are detachably connected together.
Compared with the closest prior art, the utility model provides a technical scheme has following excellent effect:
the utility model provides a connection structure for compensation wire in heating furnace sets up the insulating layer between compensation wire and thermocouple junction are in the heating furnace to reduce the influence that the compensation wire received the heating furnace thermal radiation as far as possible, influence thermoelectric property with avoiding the too early ageing of compensation wire, and then guarantee temperature measurement's accuracy.
The compensation lead leads the compensation lead joint into the inner ring of the annular heating furnace, the temperature in the inner ring of the annular heating furnace is lower, and the situation that the compensation lead joint is too close to the annular heating furnace and is baked to be damaged to cause short circuit or open circuit is avoided, so that the measuring result is not influenced; the fault point at the joint connecting position is far away from the heating furnace, so that the safety risks of scalding, heatstroke and the like of maintenance personnel are reduced, and the personal safety of the maintenance personnel is ensured; and the compensation lead joint is arranged at one end of the compensation lead, which is far away from the thermocouple, so that a fault point is extended to the compensation lead joint, and only the plugging operation is carried out at the compensation lead joint, thereby reducing the disassembly operation at the joint of the cold end of the thermocouple and the compensation lead and ensuring that the joint of the thermocouple and the compensation lead is firmly fastened without loosening.
The distance between a cross frame in a supporting frame for supporting the compensation conducting wire and the furnace top is larger than the thickness of the heat insulation layer, so that the compensation conducting wire on the cross frame is far away from the annular heating furnace as far as possible, and the heat radiation influence of the annular heating furnace on the compensation conducting wire is reduced.
And a heat insulation sleeve is arranged on the periphery of the joint of the compensation lead and the thermocouple, so that the part of the compensation lead close to the annular heating furnace can be protected.
Drawings
Fig. 1 is a schematic view of a connection structure of a compensating wire used in a heating furnace according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the cold junction specific connection between the compensation wire and the thermocouple in the embodiment of the present invention.
In the figure: 1. the furnace top of the annular heating furnace; 2. a thermocouple; 21. a base; 22. a protective cover; 3. a ceramic fiber blanket; 4. a heat insulating sleeve; 5. a cross frame; 6. erecting; 7. an omega joint; 8. the measuring device is connected with the lead; 9. a compensation wire; 10. and fixing the screw.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
According to the utility model discloses an embodiment, as shown in fig. 1, the utility model provides a connection structure for compensating wire in heating furnace, this connection structure include compensating wire, and compensating wire connects between thermocouple 2 and measuring device, and thermocouple 2 sets up in the heating furnace, and thermocouple 2 is used for measuring the temperature in the heating furnace, compensating wire includes thermocouple end, and thermocouple end and thermocouple 2 stretch out the one end of heating furnace and be connected, and the one end that thermocouple 2 was kept away from to compensating wire is provided with compensating wire joint, and thermocouple end and thermocouple 2 stretch out the one end of heating furnace and be connected, be provided with the insulating layer between thermocouple end and the heating furnace to thermal radiation reduces the influence that compensating wire received the heating furnace as far as possible, with the accuracy of guaranteeing temperature measurement.
Further, the heat insulation layer is arranged on the outer furnace wall of the heating furnace, specifically, the heat insulation layer in the embodiment is a ceramic fiber blanket 3 arranged on the furnace top 1 of the annular heating furnace, the ceramic fiber blanket 3 is provided with three layers, the length and width of a single ceramic fiber blanket 3 are 300mm multiplied by 300mm, the thickness is 200mm, the arrangement of the multiple layers of ceramic fiber blankets 3 can ensure the heat radiation isolation effect of the annular heating furnace, and the compensation lead is influenced by the heat radiation of the heating furnace; and the use of ceramic fiber blanket 3 can facilitate replacement.
The cold junction of thermocouple 2 is worn out furnace roof 1 and the three-layer ceramic fiber blanket 3 of annular heating furnace, and the compensation wire compresses tightly at the cold junction of thermocouple 2 through the set screw, is provided with the visor in thermocouple 2 and compensation wire junction for prevent that the dust from getting into, avoid the dust to influence the compensation wire and the thermocouple be connected and take place the short circuit phenomenon.
Further, the junction cladding of compensation wire and thermocouple 2 has insulation support 4, and insulation support 4 adopts the asbestos material that has good heat-proof quality, and insulation support 4 mainly protects the compensation wire that is located between thermocouple 2 and crossbearer 5 to reduce the influence that the compensation wire received the heating furnace thermal radiation, guarantee normal temperature measurement. In other embodiments, other refractory materials, such as ceramic fibers, may be used for the insulating sleeve 4.
Furthermore, one end of the compensation lead wire, which is provided with the omega connector 7, is positioned in the middle of the space surrounded by the annular heating furnace, and the middle of the space surrounded by the annular heating furnace is far away from the high-temperature part of the annular heating furnace, so that the temperature of the space surrounded by the annular heating furnace is relatively low, the omega connector 7 is better prevented from being baked, the short circuit or the open circuit is better prevented, and the measurement result is ensured not to be influenced. Moreover, even if one end of the compensation lead provided with the omega connector 7 has a fault, the fault point is far away from the annular heating furnace and the temperature is low, so that the maintenance operation is convenient, the risks of high-temperature scalding and sunstroke of maintenance personnel are reduced, and the personal safety of the maintenance personnel is ensured.
Further, this connection structure still includes braced frame, and the compensation wire setting is on braced frame, and braced frame is including being crossbearer 5 and the vertical frame 6 that L shape was arranged, and the one end that compensation wire and thermocouple 2 are connected is located crossbearer 5, and the one end that thermocouple 2 was kept away from to the compensation wire is located vertical frame 6, braced frame and angle steel welded fastening in this embodiment, and the angle steel plays support fixed action to whole braced frame. The distance between the cross frame 5 in the supporting frame and the furnace top 1 is more than or equal to 1000mm, so that the compensating lead on the cross frame 5 is far away from the annular heating furnace as far as possible, and the influence of the heat radiation of the heating furnace on the compensating lead is reduced; the vertical frame 6 is positioned in the inner ring of the annular heating furnace, and the inner ring of the annular heating furnace belongs to a position with lower temperature, so that the compensation wire in the vertical frame 6 is ensured to be in a more proper temperature environment, and the influence of the heat radiation of the annular heating furnace on the compensation wire is reduced.
Furthermore, the compensation lead joint is an omega joint 7, and the type of the omega joint 7 is HMPW-N-M/F; the omega connector 7 is in plug fit with an adaptive connector arranged on a connecting lead 8 of the measuring device, and the connecting lead 8 of the measuring device is connected with the measuring device and used for transmitting data measured by the thermocouple 2 to the measuring device. The omega connector can realize quick plugging with the adaptive connector, is convenient for connection between a compensation lead and a measuring instrument, and is convenient for temperature measurement, dotting test of a temperature measurement system and the like. Further, as shown in fig. 2, a fixing screw 10 press-fixes the compensating wire 9 to the cold end of the thermocouple 2.
Further, as shown in fig. 2, a protection structure is disposed at the periphery of the fixing screw 10, the protection structure includes a base 21 and a protection cover 22, and the base 21 is fixedly disposed at the cold end of the thermocouple 2; the protective cap 22 is screwed to the base 21. The protective cover 22 is a hemisphere, and the protective cover 22 is made of alloy steel, and the specific model of the protective cover is 1Cr18Ni 9.
After the compensation lead 9 is pressed and fixed on the cold end of the thermocouple 2 by the fixing screw 10, the protective cover 22 covers the periphery of the fixing screw 10, and the protective cover 22 is in threaded connection with the base 21, so that the connection part of the thermocouple 2 and the compensation lead 9 is sealed, and the phenomenon of short circuit caused by the influence of dust entering on the connection of the thermocouple and the compensation lead 9 is avoided; and after the protective cap 22 and the base 21 are fixed together, they are not opened any more, thus avoiding the loosening of the connection between the thermocouple 2 and the compensation lead 9 caused by frequent screw removal.
To sum up, the utility model provides a pair of in being used for the connection structure's of compensation wire in heating furnace concrete scheme:
(1) the thermal insulation layer is arranged between the compensation lead and the thermocouple, so that the influence of thermal radiation of the heating furnace on the compensation lead is reduced as much as possible, the influence of premature aging of the compensation lead on thermoelectric characteristics is avoided, and the accuracy of temperature measurement is further ensured.
(2) The compensation lead leads the compensation lead joint into the inner ring of the annular heating furnace, the temperature in the inner ring of the annular heating furnace is lower, and the situation that the compensation lead joint is too close to the annular heating furnace and is baked to be damaged to cause short circuit or open circuit is avoided, so that the measuring result is not influenced; the fault point at the joint connecting position is far away from the heating furnace, so that the safety risks of scalding, heatstroke and the like of maintenance personnel are reduced, and the personal safety of the maintenance personnel is ensured; and the compensation lead joint is arranged at one end of the compensation lead, which is far away from the thermocouple, so that a fault point is extended to the compensation lead joint, and only the plugging operation is carried out at the compensation lead joint, thereby reducing the disassembly operation at the joint of the cold end of the thermocouple and the compensation lead and ensuring that the joint of the thermocouple and the compensation lead is firmly fastened without loosening.
(3) The distance between a cross frame in a supporting frame for supporting the compensation conducting wire and the furnace top is larger than the thickness of the heat insulation layer, so that the compensation conducting wire on the cross frame is far away from the annular heating furnace as far as possible, and the heat radiation influence of the annular heating furnace on the compensation conducting wire is reduced.
(4) And a heat insulation sleeve is arranged on the periphery of the joint of the compensation lead and the thermocouple, so that the part of the compensation lead close to the annular heating furnace can be protected.
(5) After the compensation lead is pressed and fixed at the cold end of the thermocouple by the fixing screw, the protective cover covers the periphery of the fixing screw and is in threaded connection with the base, so that the connection part of the thermocouple and the compensation lead is sealed, and the phenomenon of short circuit caused by the influence of dust entering on the connection of the thermocouple and the compensation lead is avoided; and after the protective cover and the base are fixed together, the protective cover and the base are not opened any more, so that the problem that the connection between the thermocouple and the compensation lead is loosened due to frequent screw disassembly is avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as the following claims are intended to cover all modifications, equivalents, and improvements falling within the spirit and principles of the present invention.
Claims (10)
1. A connection structure for a compensation wire in a heating furnace, the connection structure comprising a compensation wire connected between a thermocouple disposed in the heating furnace and a measuring device, the thermocouple being for measuring a temperature within the heating furnace;
the compensation lead is characterized by comprising a thermocouple connecting end, the thermocouple connecting end is connected with one end, extending out of the heating furnace, of a thermocouple, and a heat insulation layer is arranged between the thermocouple connecting end and the heating furnace.
2. The connection structure for the compensating wire in the heating furnace according to claim 1, wherein the heat insulating layer is provided on an outer wall of the heating furnace.
3. The connection structure for the compensating wire in the heating furnace according to claim 2, wherein the heat insulating layer is a ceramic fiber blanket, and the thermocouple is connected to the compensating wire through the ceramic fiber blanket.
4. The connection structure of the compensating wire for the heating furnace according to claim 1, wherein the insulation layer is an insulation sleeve coated at a junction of the compensating wire and the thermocouple.
5. The connection structure of compensating wires for a heating furnace according to claim 4, wherein the heat insulating sleeve is made of asbestos.
6. The connecting structure of the compensation lead used in the heating furnace according to any one of claims 1 to 5, wherein the heating furnace is a ring-shaped heating furnace, and one end of the compensation lead, which is far away from the thermocouple, is provided with a compensation lead joint which is located in the middle of a space surrounded by the ring-shaped heating furnace.
7. The connection structure for the compensation wire in the heating furnace according to claim 6, wherein the connection structure further comprises a support frame on which the compensation wire is disposed, the support frame comprising a horizontal frame and a vertical frame arranged in an L-shape;
one end of the compensation lead connected with the thermocouple is positioned on the transverse frame;
and one end of the compensation lead, which is far away from the thermocouple, is positioned on the vertical frame.
8. The connecting structure for the compensating wire in the heating furnace according to claim 7, wherein the distance between the cross frame and the top of the annular heating furnace is 1000mm or more, and the vertical frame is positioned in the middle of the space enclosed by the annular heating furnace.
9. The connecting structure of the compensating wire for the heating furnace according to any one of claims 1 to 5, wherein the compensating wire is fixed at the cold end of the thermocouple by a fixing screw compression.
10. The connection structure for the compensating wire in the heating furnace according to claim 9, wherein a protective structure is provided around the fixing screw;
the protection structure comprises a base and a protective cover, wherein the base is fixedly arranged at the cold end of the thermocouple, and the protective cover and the base are detachably connected together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021019694.0U CN212082641U (en) | 2020-06-05 | 2020-06-05 | Connecting structure for compensating wire in heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021019694.0U CN212082641U (en) | 2020-06-05 | 2020-06-05 | Connecting structure for compensating wire in heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212082641U true CN212082641U (en) | 2020-12-04 |
Family
ID=73558304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021019694.0U Active CN212082641U (en) | 2020-06-05 | 2020-06-05 | Connecting structure for compensating wire in heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212082641U (en) |
-
2020
- 2020-06-05 CN CN202021019694.0U patent/CN212082641U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212082641U (en) | Connecting structure for compensating wire in heating furnace | |
| CN108957165A (en) | A kind of transmission line of electricity porcelain insulator thermometric experimental provision | |
| CN109633430A (en) | A kind of true type GIS overheating malfunction monitoring experimental provision | |
| CN111562026A (en) | Connecting structure for compensating wire in heating furnace | |
| CN106423330B (en) | A kind of experimental heating apparatus | |
| WO2021047223A1 (en) | High-voltage direct current power transmission converter valve tower provided with fire monitoring functions | |
| CN209640457U (en) | A kind of true type GIS overheating malfunction monitoring experimental provision | |
| CN208907076U (en) | A kind of protective device of platinum channel welded type thermocouple | |
| CN213956032U (en) | Temperature detection device for furnace temperature control | |
| CN215403795U (en) | Real-time temperature monitoring system for glass substrate | |
| CN211489537U (en) | Infrared device directly mounted on ladle roaster for measuring roasting temperature | |
| CN207147660U (en) | The rigid thermocouple that can be lain in a horizontal plane in stove | |
| CN209764123U (en) | Automatic change instrument and meter heat protection sheath | |
| JP2005315510A (en) | Heating furnace, thermometer, and in-furnace temperature control method | |
| CN209495991U (en) | A kind of oxygen sensing device resistant to high temperature | |
| CN208751728U (en) | Temperature measuring equipment | |
| CN220959574U (en) | Ingot furnace | |
| CN210718704U (en) | Reduction furnace thermocouple sealing device | |
| JP2010122232A (en) | Heating furnace and thermometer | |
| CN220793870U (en) | Novel heat preservation steel construction | |
| CN215725083U (en) | External protection device for aluminum oxide sintering pushed slab kiln | |
| CN109357776B (en) | System for measuring the bottom temperature of a direct current arc furnace | |
| CN210328011U (en) | Temperature-controllable quick-connection thermal belt | |
| CN209250124U (en) | A kind of heating-furnace top cable protective device | |
| CN220651714U (en) | Pressure transmitter compensation monitoring cable for transformer substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |