Thermocouple leading-out device

Abstract

The utility model relates to the technical field of monitoring and early warning equipment, in particular to a thermocouple leading-out device, which comprises an external mechanism, a connecting pipe, an installation mechanism and a detection mechanism, the inner wall of the bottom end of the external mechanism is fixedly connected to the top end of the connecting pipe, and the bottom end of the connecting pipe is fixedly connected with the inner wall of the installation mechanism. When the device is used, the top end of the heat conduction shell is inserted into the connecting pipe, the threaded sleeve is rotationally inserted into the connecting pipe along the threads to extrude the heat conduction shell, the heat conduction shell is made to make contact with the limiting ring, the sealing gasket is extruded, and the connecting position is sealed; secondary sealing is achieved by arranging the sealing sleeve between the threaded sleeve and the heat conduction shell, the overall sealing performance of equipment is improved, the flange connector is sleeved with the threaded sleeve, the limiting ring is rotated to rotate and fix the flange connector, and the flange connector can be replaced conveniently according to different thermocouple installation conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of thermocouples, in particular to a thermocouple lead-out device. Background Art

[0002] In the industrial production process, temperature is one of the important parameters that need to be measured and controlled. Thermocouples have the advantages of simple structure, easy manufacturing, wide measurement range, high accuracy, small inertia, fast response to temperature changes, and convenient remote transmission of output signals. In addition, since thermocouples are passive sensors, they do not require external power supply during measurement, are not prone to self-heating, and have high safety, so they are often used to measure the temperature of gas or liquid in furnaces and pipelines and the surface temperature of solids;

[0003] Chinese Patent Publication No.: CN216770820U discloses a thermocouple lead-out device, which includes a thermocouple body, a junction box, a terminal, an installation locking platform, a protective tube, a flange, a compression sealing platform, a first sealing gasket, a thermocouple working end, a chamfer and a second sealing gasket. A junction box is arranged at the upper end of the thermocouple body, a terminal is arranged on the junction box, and an installation locking platform is arranged below the junction box; a protective tube is arranged below the installation locking platform, a thermocouple working end is arranged at the lower end of the protective tube, and a flange is arranged outside the protective tube in the circumferential direction; a second sealing gasket is arranged below the flange, a compression sealing platform is arranged below the second sealing gasket, a chamfer is arranged at the lower end of the compression sealing platform, and a first sealing gasket is arranged below the compression sealing platform. An external thread, a first sealing gasket and a second sealing gasket are provided at the same time. The utility model belongs to the technical field of thermocouples, specifically a thermocouple that is doubly fixed by an external thread and a locking bolt. However, in actual use, it is not convenient to replace the connecting tube of the thermocouple lead-out device, and the sealing between the conduit and the lead-out device is not good enough. Therefore, a thermocouple lead-out device is proposed. Utility Model Content

[0004] In view of this, the utility model provides a thermocouple lead-out device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0005] The technical solution of the utility model is implemented as follows: a thermocouple lead-out device comprises an external connection mechanism, a connecting pipe, a mounting mechanism and a detection mechanism;

[0006] The inner wall of the bottom end of the external connection mechanism is fixedly connected to the top end of the connection pipe, the bottom end of the connection pipe is fixedly connected to the inner wall of the installation mechanism, the detection mechanism is installed inside the installation mechanism, and the inner bottom end of the connection pipe is fixedly connected to the outer ring of the limit ring;

[0007] The external connection mechanism comprises a protective shell, an extension tube, a first external joint, a first insulating cover, a second external joint and a second insulating cover, the top of the protective shell is threadedly connected to the bottom end of the first insulating cover, the top of the first insulating cover is fixedly installed with the second external joint, the left end of the protective shell passes through the right end of the extension tube, the left end of the extension tube is internally threadedly connected to the outer wall of the second insulating cover, and the left outer wall of the second insulating cover is fixedly installed with the right side of the first external joint;

[0008] The mounting mechanism comprises a threaded sleeve, an extrusion ring, a flange connector, a sealing sleeve, a limiting ring and a sealing gasket. The top end of the threaded sleeve and the limiting ring are fixedly connected to the outer wall of the heat-conducting shell by threads, the top end of the heat-conducting shell and the limiting ring are fixedly connected to the outer wall of the sealing gasket, the outer wall of the threaded sleeve is fixedly connected to the inner side of the extrusion ring by threads, the top end of the extrusion ring and the bottom end of the threaded sleeve are fixedly connected to the outer wall of the flange connector, and a sealing sleeve is arranged between the threaded sleeve and the heat-conducting shell.

[0009] Further preferably, the detection mechanism includes a heat-conducting shell, an insulating tube, a first metal wire and a second metal wire, the inner wall of the heat-conducting shell is fixedly connected to the outer sides of several limit frames, the interior of the limit frames is slidably connected to the outer wall of the insulating tube, and the interior of the insulating tube is respectively fixedly connected to the outer wall of the first metal wire and the outer wall of the second metal wire.

[0010] Further preferably, the right side of the first external connector is fixedly connected to the outer wall of the first metal wire and the outer wall of the second metal wire, respectively, and the other end of the first metal wire and the other end of the second metal wire are fixedly connected to the bottom end of the second external connector, respectively.

[0011] Further preferably, the external mechanism also includes a handle, an insulating pad and a mounting column, the inner bottom end of the protective shell is fixedly connected to the bottom end of the insulating pad, the top end of the insulating pad is fixedly connected to the bottom end of the mounting column, and the middle of the top end of the second insulating cover is fixedly connected to the bottom end of the handle.

[0012] Further preferably, the top end of the heat-conducting shell is configured to be T-shaped.

[0013] Further preferably, the outer wall of the mounting column is fixedly connected to the outer wall of the first metal wire and the outer wall of the second metal wire by bolts, and the outer wall of the first metal wire and the outer wall of the second metal wire respectively pass through the middle of the insulating pad.

[0014] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0015] When the utility model is used, the top end of the heat-conducting shell is inserted into the connecting tube, and the threaded sleeve is rotated along the thread to be inserted into the connecting tube to squeeze the heat-conducting shell, so that the heat-conducting shell contacts the limiting ring, and the sealing gasket is squeezed to seal the connection. A secondary seal is achieved by arranging a sealing sleeve between the threaded sleeve and the heat-conducting shell, thereby improving the overall sealing performance of the equipment. By inserting the flange connecting head into the threaded sleeve and rotating the limiting ring to rotate and fix the flange connecting head, it is convenient to replace the flange connecting head according to different installation conditions of the thermocouple.

[0016] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural diagram of the entire utility model;

[0019] Figure 2 For this utility model Figure 1 Another perspective structure diagram;

[0020] Figure 3 This is the internal structure diagram of the utility model;

[0021] Figure 4 This is a cross-sectional structural diagram of the internal installation mechanism of the utility model;

[0022] Figure 5 For this utility model Figure 4 A magnified structural diagram of the part in the middle.

[0023] Figure numerals: 1. external connection mechanism; 101. protective shell; 102. extension tube; 103. first external connection; 104. first insulating cover; 105. second external connection; 106. handle; 107. insulating pad; 108. mounting column; 109. second insulating cover; 2. connecting tube; 3. mounting mechanism; 301. threaded sleeve; 302. extrusion ring; 303. flange connector; 304. sealing sleeve; 305. limiting ring; 306. sealing pad; 4. detection mechanism; 401. heat-conducting shell; 402. insulating tube; 403. limiting frame; 404. first metal wire; 405. second metal wire. DETAILED DESCRIPTION

[0024] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0025] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-5 As shown, the embodiment of the utility model provides a thermocouple lead-out device, including an external connection mechanism 1, a connecting pipe 2, a mounting mechanism 3 and a detection mechanism 4;

[0027] The inner wall of the bottom end of the external connection mechanism 1 is fixedly connected to the top end of the connection tube 2, the bottom end of the connection tube 2 is fixedly connected to the inner wall of the installation mechanism 3, the detection mechanism 4 is installed inside the installation mechanism 3, and the inner bottom end of the connection tube 2 is fixedly connected to the outer ring of the limit ring 305;

[0028] The external connection mechanism 1 includes a protective shell 101, an extension tube 102, a first external connector 103, a first insulating cover 104, a second external connector 105 and a second insulating cover 109. The top of the protective shell 101 is threadedly connected to the bottom of the first insulating cover 104, the top of the first insulating cover 104 is fixedly installed with the second external connector 105, the left end of the protective shell 101 passes through the right end of the extension tube 102, the left end of the extension tube 102 is internally threadedly connected to the outer wall of the second insulating cover 109, and the left outer wall of the second insulating cover 109 is fixedly installed with the right side of the first external connector 103;

[0029] The mounting mechanism 3 comprises a threaded sleeve 301, an extrusion ring 302, a flange connector 303, a sealing sleeve 304, a limiting ring 305 and a sealing gasket 306. The top of the threaded sleeve 301 and the limiting ring 305 are fixedly connected to the outer wall of the heat-conducting shell 401 by threads, the top of the heat-conducting shell 401 and the limiting ring 305 are fixedly connected to the outer wall of the sealing gasket 306, the outer wall of the threaded sleeve 301 is fixedly connected to the inner side of the extrusion ring 302 by threads, the top of the extrusion ring 302 and the bottom of the threaded sleeve 301 are fixedly connected to the outer wall of the flange connector 303, a sealing sleeve 304 is arranged between the threaded sleeve 301 and the heat-conducting shell 401, the top of the heat-conducting shell 401 is inserted into the interior of the connecting pipe 2, and the threaded sleeve 304 is fixedly connected along the threads. The threaded sleeve 301 is rotated and inserted into the connecting pipe 2 to extrude the heat-conducting shell 401, so that the heat-conducting shell 401 contacts the limiting ring 305, and the sealing gasket 306 is squeezed to seal the connection. A sealing sleeve 304 is provided between the threaded sleeve 301 and the heat-conducting shell 401 to achieve secondary sealing, thereby improving the overall sealing performance of the equipment. A sealing sleeve 304 is provided between the threaded sleeve 301 and the heat-conducting shell 401 to achieve secondary sealing, thereby improving the overall sealing performance of the equipment. The flange connector 303 is inserted into the outside of the threaded sleeve 301, and the limiting ring 305 is rotated and inserted onto the outside of the threaded sleeve 301, so that the flange connector 303 can be clamped and fixed, and the flange connector 303 can be replaced and installed according to different installation conditions of the thermocouple.

[0030] In one embodiment, the detection mechanism 4 includes a heat-conducting shell 401, an insulating tube 402, a first metal wire 404 and a second metal wire 405. The inner wall of the heat-conducting shell 401 is fixedly connected to the outer sides of several limit frames 403. The inner part of the limit frames 403 is slidably connected to the outer wall of the insulating tube 402. The inner part of the insulating tube 402 is fixedly connected to the outer walls of the first metal wire 404 and the second metal wire 405. The first metal wire 404 and the second metal wire 405 are inserted into the heat-conducting shell 401 using one end of the insulating sleeve, and the thermocouple is at the bottom of the heat-conducting shell 401.

[0031] In one embodiment, the right side of the first external joint 103 is fixedly connected to the outer wall of the first metal wire 404 and the outside of the second metal wire 405, respectively, and the other end of the first metal wire 404 and the other end of the second metal wire 405 are fixedly connected to the bottom end of the second external joint 105. By inserting the heat-conductive shell 401 into the interior of the device whose temperature needs to be measured, and fixing the flange connector 303 to the surface of the device by bolts, the temperature inside the device is introduced into the thermoelectrode along the heat-conductive shell 401 to cause the first metal wire 404 and the second metal wire 405 to generate thermoelectric phenomenon, and the first metal wire 404 and the second metal wire 405 introduce current into the first external joint 103 and the second external joint 105, and the first external joint 103 or the second external joint 105 is connected to a multimeter for measurement, thereby measuring the temperature change.

[0032] In one embodiment, the external mechanism 1 also includes a handle 106, an insulating pad 107 and a mounting column 108. The inner bottom end of the protective shell 101 is fixedly connected to the bottom end of the insulating pad 107, the top end of the insulating pad 107 is fixedly connected to the bottom end of the mounting column 108, and the middle of the top end of the second insulating cover 109 is fixedly connected to the bottom end of the handle 106.

[0033] In one embodiment, the top of the heat-conducting shell 401 is set to a T shape, and the outer wall of the mounting column 108 is fixedly connected to the outer wall of the first metal wire 404 and the outer wall of the second metal wire 405 by bolts respectively. The outer wall of the first metal wire 404 and the outer wall of the second metal wire 405 respectively pass through the middle of the insulating pad 107, and the first metal wire 404 and the second metal wire 405 pass through the middle of the connecting tube 2 and the middle of the insulating pad 107 and are placed in the mounting column 108 fixed at the top of the insulating pad 107.

[0034] When the utility model is working: firstly, insert the first metal wire 404 and the second metal wire 405 into the heat-conducting shell 401 through one end of the insulating sleeve, and the hot electrode is at the bottom of the heat-conducting shell 401, pass the first metal wire 404 and the second metal wire 405 through the middle of the connecting tube 2 and the middle of the insulating pad 107 and put them into the mounting column 108 fixed at the top of the insulating pad 107, fix it by rotating the bolt, insert the top of the heat-conducting shell 401 into the connecting tube 2, and rotate the threaded sleeve 301 along the thread to insert it into the connecting tube 2 to squeeze the heat-conducting shell 401, so that the heat-conducting shell 401 contacts the limit ring 305, and squeeze the sealing pad 306 to seal the connection, and realize secondary sealing by arranging the sealing sleeve 304 between the threaded sleeve 301 and the heat-conducting shell 401, thereby improving the overall sealing performance of the equipment. By inserting the flange connector 303 into the outside of the threaded sleeve 301 and rotating the limit ring 305 to sleeve the outside of the threaded sleeve 301, the flange connector 303 can be clamped and fixed, and the flange connector 303 can be replaced and installed according to different installation conditions of the thermocouple. By inserting the heat-conducting shell 401 into the inside of the equipment whose temperature needs to be measured and fixing the flange connector 303 to the surface of the equipment with bolts, the temperature inside the equipment is introduced into the thermoelectrode along the heat-conducting shell 401 to generate thermoelectric phenomenon in the first metal wire 404 and the second metal wire 405, and the current is introduced into the first external connector 103 and the second external connector 105 by the first metal wire 404 and the second metal wire 405, and the first external connector 103 or the second external connector 105 is connected to a multimeter for measurement, so as to measure the temperature change.

[0035] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A thermocouple lead-out device, characterized in that: It comprises an external connection mechanism (1), a connection pipe (2), a mounting mechanism (3) and a detection mechanism (4); The inner wall of the bottom end of the external connection mechanism (1) is fixedly connected to the top end of the connection tube (2), the bottom end of the connection tube (2) is fixedly connected to the inner wall of the installation mechanism (3), the detection mechanism (4) is installed inside the installation mechanism (3), and the inner bottom end of the connection tube (2) is fixedly connected to the outer ring of the limit ring (305); The external connection mechanism (1) comprises a protective shell (101), an extension tube (102), a first external joint (103), a first insulating cover (104), a second external joint (105) and a second insulating cover (109); the top end of the protective shell (101) is threadedly connected to the bottom end of the first insulating cover (104); the top end of the first insulating cover (104) is fixedly mounted to the bottom end of the second external joint (105); the left end of the protective shell (101) passes through the right end of the extension tube (102); the left end of the extension tube (102) is internally threadedly connected to the outer wall of the second insulating cover (109); and the left outer wall of the second insulating cover (109) is fixedly mounted to the right side of the first external joint (103); The mounting mechanism (3) comprises a threaded sleeve (301), an extrusion ring (302), a flange connector (303), a sealing sleeve (304), a limiting ring (305) and a sealing gasket (306); the top end of the threaded sleeve (301) and the limiting ring (305) are fixedly connected to the outer wall of the heat-conducting shell (401) via threads; the top end of the heat-conducting shell (401) and the limiting ring (305) are fixedly connected to the outer wall of the sealing gasket (306); the outer wall of the threaded sleeve (301) is fixedly connected to the inner side of the extrusion ring (302) via threads; the top end of the extrusion ring (302) and the bottom end of the threaded sleeve (301) are fixedly connected to the outer wall of the flange connector (303); and a sealing sleeve (304) is provided between the threaded sleeve (301) and the heat-conducting shell (401).

2. A thermocouple lead-out device according to claim 1, characterized in that: The detection mechanism (4) comprises a heat-conducting shell (401), an insulating tube (402), a first metal wire (404) and a second metal wire (405); the inner wall of the heat-conducting shell (401) is fixedly connected to the outer sides of a plurality of limit frames (403); the interior of the limit frames (403) is slidably connected to the outer wall of the insulating tube (402); and the interior of the insulating tube (402) is fixedly connected to the outer walls of the first metal wire (404) and the second metal wire (405).

3. A thermocouple lead-out device according to claim 1, characterized in that: The right side of the first external connector (103) is respectively fixedly connected to the outer wall of the first metal wire (404) and the outer wall of the second metal wire (405), and the other end of the first metal wire (404) and the other end of the second metal wire (405) are respectively fixedly connected to the bottom end of the second external connector (105).

4. A thermocouple lead-out device according to claim 1, characterized in that: The external connection mechanism (1) also includes a handle (106), an insulating pad (107) and a mounting column (108); the inner bottom end of the protective shell (101) is fixedly connected to the bottom end of the insulating pad (107); the top end of the insulating pad (107) is fixedly connected to the bottom end of the mounting column (108); and the middle of the top end of the second insulating cover (109) is fixedly connected to the bottom end of the handle (106).

5. A thermocouple lead-out device according to claim 1, characterized in that: The top end of the heat-conducting shell (401) is configured to be T-shaped.

6. A thermocouple lead-out device according to claim 4, characterized in that: The outer wall of the mounting column (108) is fixedly connected to the outer wall of the first metal wire (404) and the outer wall of the second metal wire (405) by bolts, and the outer wall of the first metal wire (404) and the outer wall of the second metal wire (405) respectively pass through the middle of the insulating pad (107).

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