CN211262514U

CN211262514U - Insulating thermocouple

Info

Publication number: CN211262514U
Application number: CN202020132111.9U
Authority: CN
Inventors: 叶百发; 叶百俊; 伍月明
Original assignee: Jiangsu Plaza Premium Electric Instrument Co ltd
Current assignee: Jiangsu Plaza Premium Electric Instrument Co ltd
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2020-08-14
Anticipated expiration: 2030-01-21

Abstract

An insulating thermocouple comprises a junction box, wherein the lower part of the junction box is connected with a protective sleeve, an installation part is arranged on the protective sleeve, the junction box is connected with the protective sleeve through a connecting part, a rotating bearing is arranged in the protective sleeve, an inner ring of the rotating bearing is connected with the protective sleeve, an outer ring of the rotating bearing is connected with the connecting part, one end of the connecting part is connected with the junction box, a positioning hole is formed in the end face of the other end of the connecting part and matched with a positioning clamping part, the positioning clamping part is arranged on a spring clamping part, the spring clamping part comprises a first limiting clamping part, a second limiting clamping part and a reset spring, the second limiting clamping part is fixed on the inner wall of the spring clamping; the utility model discloses a set up rolling bearing between terminal box and the protective case, realized can adjusting the wiring direction of terminal box, not only convenient but also safe and reliable has avoided moving back between not hard up terminal box and the protective case under the condition that needs angle of adjustment to detain.

Description

Insulating thermocouple

Technical Field

The utility model relates to a thermocouple technical field, concretely relates to insulating type thermocouple.

Background

The thermocouple is a commonly used temperature measuring element in a temperature measuring instrument, the basic principle of thermocouple temperature measurement is that a closed loop is formed by two metal conductors with different components, when temperature gradients exist at two ends, current can pass through the loop, a thermocouple lead is divided into an anode and a cathode, the cathode of a common thermocouple lead is made of copper, iron and nickel chromium, the mobility of hot point atoms of the metals is larger than that of platinum, partial heat is dissipated, and the measured temperature is lower than the actual temperature; and can have the terminal box wiring direction not right in the installation, need to move back the knot processing to the threaded connection between terminal box and the protective case, will have the clearance when moving back to detain between terminal box and the protective case, can become flexible.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects of the prior art and providing an insulating thermocouple, which comprises a junction box, wherein the lower part of the junction box is connected with a protective sleeve, the protective sleeve is provided with an installation part, the junction box is connected with the protective sleeve through a connecting part, a rotating bearing is arranged in the protective sleeve, an inner ring of the rotating bearing is connected with the protective sleeve, an outer ring of the rotating bearing is connected with the connecting part, one end of the connecting part is connected with the junction box, the end surface of the other end of the connecting part is provided with a positioning hole, the positioning hole is matched with a positioning fastener, the positioning fastener is arranged on a spring fastener, the spring fastener comprises a first limiting fastener, a second limiting fastener and a reset spring, the second limiting fastener is fixed on the inner wall of the spring fastener, the first limiting fastener is fixed on the outer wall of the protective sleeve, a return spring is arranged between the first limiting clamping piece and the second limiting clamping piece, and the return spring is sleeved outside the protective sleeve; the protective case include the protection pipe wall, the protection pipe wall in be equipped with the insulating layer, the insulating layer in be hollow structure, hollow structure in be equipped with the mount, the mount in the middle of be equipped with the baffle, the both sides of baffle be equipped with the thermode respectively, just the thermode pass the mount, the one end of thermode with wear into the terminal box, the other end of thermode fix at the temperature measurement node, hollow structure in be equipped with the conduction oil.

The insulating layer is an air brick.

And a sealing element is arranged at the position where the hot electrode penetrates through the fixing frame.

The spring clamping piece is externally provided with a clamping handle.

The utility model has the advantages that: the utility model provides a compact structure's an insulating type thermocouple, has following beneficial effect: (1) the utility model discloses a setting of conduction oil neither exposes at the temperature measurement node, under the ungrounded condition again, has improved measuring speed and measuring stability, has improved the interference killing feature.

(2) The utility model discloses a set up rolling bearing between terminal box and the protective case, realized can adjusting the wiring direction of terminal box, not only convenient but also safe and reliable has avoided moving back between not hard up terminal box and the protective case under the condition that needs angle of adjustment to detain.

(3) The utility model discloses a mount that sets up, when needs are maintained thermode and temperature measurement node, the mount is taken off to the accessible and is maintained, the later maintenance of being convenient for and maintenance or change etc..

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic sectional view of the protective sleeve of the present invention.

In the figure: 1. junction box, 2, connecting portion, 3, spring fastener, 4, installed part, 5, protective case, 6, location fastener, 7, protection pipe wall, 8, insulating layer, 9, conduction oil, 10, sealing member, 11, mount, 12, first spacing fastener, 13, rolling bearing, 14, temperature measurement node, 15, thermode, 16, baffle, 17, card handle, 18, reset spring, 19 the spacing fastener of second.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example 1, as shown: an insulation type thermocouple comprises a junction box 1, wherein the lower part of the junction box 1 is connected with a protective sleeve 5, a mounting part 4 is arranged on the protective sleeve 5, the junction box 1 is connected with the protective sleeve 5 through a connecting part 2, a rotating bearing 13 is arranged in the protective sleeve 5, an inner shaft ring of the rotating bearing 13 is connected with the protective sleeve 5, an outer shaft ring of the rotating bearing 13 is connected with the connecting part 2, one end of the connecting part 2 is connected with the junction box 1, a positioning hole is arranged on the end face of the other end of the connecting part 2 and matched with a positioning clamping part 6, the positioning clamping part 6 is arranged on a spring clamping part 3, the spring clamping part 3 comprises a first limiting clamping part 12, a second limiting clamping part 19 and a reset spring 18, the second limiting clamping part 19 is fixed on the inner wall of the spring clamping part 3, the first limiting clamping piece 12 is fixed on the outer wall of the protective sleeve 5, a return spring 18 is arranged between the first limiting clamping piece 12 and the second limiting clamping piece 19, and the return spring 18 is sleeved outside the protective sleeve 5; protective case 5 include protection pipe wall 7, protection pipe wall 7 in be equipped with insulating layer 8, insulating layer 8 in be hollow structure, hollow structure in be equipped with mount 11, mount 11 in the middle of be equipped with baffle 16, the both sides of baffle 16 be equipped with thermode 15 respectively, just thermode 15 pass mount 11, the one end of thermode 15 with wear into terminal box 1, the other end of thermode 15 fix in temperature measurement node 14 department, hollow structure in be equipped with conduction oil 9.

Embodiment 2, an insulating thermocouple, the insulating layer 8 is the air brick. The hot electrode 15 is provided with a sealing element 10 through the fixing frame 11. A clamping handle 17 is arranged outside the spring clamping piece 3. Insulation is achieved through the arranged air brick insulating layer 8, and heat conduction oil 9 can pass through the air brick insulating layer, so that the heat conduction oil 9 is in full contact with the protective pipe wall 7 and heat transfer is carried out.

In the utility model, the height of the fixing frame 11 is 4/5 of the height of the hollow structure in the protective sleeve 5, so 1/5 of the height of the heat conducting oil 9 in the hollow structure is 80% of the height of the heat conducting oil 9 in the protective sleeve 5 in the residual 1/5; when the junction box 1 needs to rotate, the clamping handle 17 is pressed downwards, the spring clamping piece 3 moves downwards, the positioning clamping piece 6 arranged on the spring clamping piece 3 is separated from the positioning hole of the connecting part 2, the spring clamping piece 3 is loosened after the junction box 1 rotates, the positioning clamping piece 6 is clamped in the positioning hole, and the effect of adjusting the wiring direction of the junction box 1 is achieved.

The utility model provides a compact structure's an insulating type thermocouple, through the setting of conduction oil 9, neither expose at temperature measurement node 14, under the circumstances of ungrounded again, improved measuring speed and measuring stability, improved the interference killing feature. Set up rolling bearing 13 between terminal box 1 and protective case 5, realized can adjusting the wiring direction of terminal box 1, not only convenient but also safe and reliable has avoided the back of knot between not hard up terminal box 1 and the protective case 5 under the condition of needs angle of adjustment. Through the mount 11 that sets up, when needing to maintain thermode 15 and temperature measurement node 14, the accessible takes off mount 11 and maintains, is convenient for later maintenance and maintenance or change etc..

Finally, the embodiments were chosen and described in order to best explain the principles of the invention and the patent disclosure, and are not intended to be limited to the details shown. Modifications and equivalents of the embodiments of the invention may be made by those skilled in the art without departing from the spirit and scope of the invention, and are intended to be covered by the appended claims.

Claims

1. An insulating thermocouple, includes terminal box, its characterized in that: the lower part of the junction box is connected with a protective sleeve, the protective sleeve is provided with an installation part, the junction box is connected with the protective sleeve through a connecting part, a rotating bearing is arranged in the protective sleeve, an inner ring of the rotating bearing is connected with the protective sleeve, an outer ring of the rotating bearing is connected with the connecting part, one end of the connecting part is connected with the junction box, the end surface of the other end of the connecting part is provided with a positioning hole which is matched with a positioning clamping part, the positioning clamping part is arranged on a spring clamping part, the spring clamping part comprises a first limiting clamping part, a second limiting clamping part and a reset spring, the second limiting clamping part is fixed on the inner wall of the spring clamping part, the first limiting clamping part is fixed on the outer wall of the protective sleeve, and the reset spring is arranged between the first limiting clamping part and the second limiting clamping part, the reset spring is sleeved outside the protective sleeve; the protective case include the protection pipe wall, the protection pipe wall in be equipped with the insulating layer, the insulating layer in be hollow structure, hollow structure in be equipped with the mount, the mount in the middle of be equipped with the baffle, the both sides of baffle be equipped with the thermode respectively, just the thermode pass the mount, the one end of thermode with wear into the terminal box, the other end of thermode fix at the temperature measurement node, hollow structure in be equipped with the conduction oil.

2. An insulated thermocouple according to claim 1, wherein: the insulating layer is an air brick.

3. An insulated thermocouple according to claim 1, wherein: and a sealing element is arranged at the position where the hot electrode penetrates through the fixing frame.

4. An insulated thermocouple according to claim 1, wherein: the spring clamping piece is externally provided with a clamping handle.