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CN-117091714-B - Anticorrosive thermocouple

CN117091714BCN 117091714 BCN117091714 BCN 117091714BCN-117091714-B

Abstract

The invention discloses an anti-corrosion thermocouple, relates to the technical field of thermocouples, and solves the technical problems that in the prior art, a thermoelectric electrode is easy to bend, fluid to be monitored is easy to adhere to the thermoelectric electrode, the temperature accuracy of a measured medium is affected, and cleaning is difficult; the thermocouple comprises a thermocouple body, a barrel protecting mechanism and a scraping barrel, wherein the thermocouple body comprises a junction box, a thermode arranged on the junction box, an insulating anti-corrosion layer arranged on the thermode and an equipment connecting port arranged on the side face of the junction box, the barrel protecting mechanism comprises a threaded joint sleeved on the thermode, an outer barrel protecting arranged on the threaded joint and an inner barrel protecting arranged in the outer barrel protecting in a sliding mode, and the scraping barrel in the inner barrel protecting slides on the thermode.

Inventors

  • CHEN XINGGUO
  • LU ZHAOXIAN
  • YANG MAOMING
  • LIANG DELIN
  • DING SHIJIE

Assignees

  • 安徽徽宁电器仪表集团有限公司

Dates

Publication Date
20260505
Application Date
20230825

Claims (6)

  1. 1. An anti-corrosion thermocouple is characterized by comprising a thermocouple body (2), wherein the thermocouple body (2) comprises a junction box (21), a thermoelectric electrode (23) arranged on the junction box (21), an insulating anti-corrosion layer (231) arranged on the thermoelectric electrode (23) and an equipment connecting port (22) arranged on the side surface of the junction box (21); the device comprises a thermoelectric electrode (23), and is characterized by further comprising a casing mechanism (1), wherein the casing mechanism (1) comprises a threaded joint (11) sleeved on the thermoelectric electrode (23), an outer casing (12) arranged on the threaded joint (11) and an inner casing (13) slidably arranged in the outer casing (12), an installation groove (121) for sliding the inner casing (13) is formed in the inner wall surface of the outer casing (12), a plurality of guide posts (122) are arranged in the installation groove (121), and the inner casing (13) is movably sleeved on each guide post (122); The pile casing mechanism (1) further comprises two fixed pulleys (14) symmetrically arranged on the inner wall surface of the outer pile casing (12), a base (15) connected to the outer pile casing (12), rotating rods (16) rotatably arranged on two sides of the base (15), worm wheels (17) sleeved on each rotating rod (16) and winding wheels (18) and a worm (110) rotatably arranged in the base (15), a return spring (123) is sleeved on each guide post (122), each return spring (123) is connected with the inner pile casing (13), two sections of spiral teeth are arranged on the worm (110), the directions of each section of spiral teeth are opposite, the two worm wheels (17) are meshed and connected to each section of spiral teeth of the worm (110), a pull rope (19) is wound on each winding wheel (18), and each pull rope (19) is respectively lapped on the fixed pulleys (14) and is connected with the top surface of the inner pile casing (13); The inner wall surface of the mounting groove (121) is provided with a plurality of grooves (124), the outer wall surface of the inner casing (13) is provided with elastic rubber rods (125) at positions corresponding to the grooves (124), and each elastic rubber rod (125) is correspondingly and slidingly arranged in each groove (124); Every the inside of elasticity rubber pole (125) is provided with buffering cavity (126), is provided with a plurality of buffer tank (127) in every buffering cavity (126), every the inside of buffer tank (127) is provided with buffer spring (128), the inner wall of buffering cavity (126) is connected with buffer briquetting (129) in the notch department that corresponds every buffer tank (127), and every buffer briquetting (129) are connected with buffer spring (128) respectively.
  2. 2. The anticorrosive thermocouple according to claim 1, characterized in that the cartridge guard mechanism (1) further comprises a cartridge guard (3), the threads of the cartridge guard (3) are sleeved on the junction box (21), and the outer cartridge guard (12) is screwed on the threaded joint (11).
  3. 3. The anti-corrosion thermocouple according to claim 1, wherein a scraping cylinder (131) is arranged in a bottom surface port of the inner protective cylinder (13), the scraping cylinder (131) is movably sleeved on the thermoelectric electrode (23), an elastic scraping blade I (132) is arranged on the inner wall surface of the scraping cylinder (131), and a penetrating groove (133) is formed in the middle of the elastic scraping blade I (132).
  4. 4. A corrosion-resistant thermocouple according to claim 3, wherein the bottom surface of the scraping cylinder (131) is provided with a plurality of second elastic scraping blades (134) distributed circularly, each second elastic scraping blade (134) is arc-shaped, and each second elastic scraping blade (134) is hemispherical after being closely integrated.
  5. 5. The corrosion resistant thermocouple of claim 4, wherein said first elastomeric wiper (132) and said second elastomeric wiper (134) are each formed of an elastomeric corrosion resistant material.
  6. 6. An anti-corrosion thermocouple according to claim 1, characterized in that the outer wall surface of the base (15) is provided with a micro-stepper motor, the spindle of which is connected to the rotating rod (16), the power supply of which is provided by a battery externally arranged on the base (15).

Description

Anticorrosive thermocouple Technical Field The invention belongs to the technical field of thermocouples, and particularly relates to an anti-corrosion thermocouple. Background The thermocouple is a commonly used temperature measuring element in the temperature measuring instrument, is commonly used with a display instrument, a recording instrument and an electronic regulator to measure temperature, is used for converting a temperature signal into a thermoelectromotive force signal, is converted into the temperature of a measured medium through an electric instrument, consists of a hot electrode, a protection tube, a junction box and other main parts, is widely applied to industries such as petroleum, metallurgy and the like, and can stably measure the temperature under extremely severe working conditions. According to the chemical wear-resistant thermocouple with high-temperature corrosion resistance, which is disclosed in the Chinese patent publication No. CN216846575U, through arranging a movable plate, a wear-resistant pipe and a fixed sleeve at the bottom of the thermocouple, two L-shaped inserting blocks are arranged at two sides of the wear-resistant pipe, and after the two L-shaped inserting blocks are inserted into slots inside the fixed sleeve, the wear-resistant pipe can be clamped and fixed through the cooperation of the movable plate and the fixed sleeve, and the bottom of the thermocouple can be protected during detection, so that the wear degree of the thermocouple can be reduced, the service life of the device is prolonged, and the replacement cost is reduced. At present, when the thermocouple is applied to monitoring fluid in the chemical industry field, the thermode of the existing thermocouple is usually leaked entirely, so that once the thermocouple is installed, the thermode is easy to bend along with the flowing direction of a medium to be monitored, the fluid to be monitored is easy to adhere to the thermode, the temperature accuracy of the medium to be monitored is influenced for a long time, and cleaning is difficult. We have therefore devised a thermocouple that is corrosion resistant. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides an anti-corrosion thermocouple, which solves the problems that in the prior art, a thermoelectric electrode is easy to bend, fluid to be monitored is easy to adhere to the thermoelectric electrode, the temperature accuracy of a measured medium is affected, and cleaning is difficult. To achieve the above object, an embodiment according to a first aspect of the present invention provides an anti-corrosion thermocouple, including a thermocouple body including a junction box, a thermode provided on the junction box, an insulating anti-corrosion layer provided on the thermode, and an equipment connection port provided on a side of the junction box; The hot air heating device is characterized by further comprising a casing mechanism, wherein the casing mechanism comprises a threaded joint sleeved on the thermoelectric electrode, an outer casing arranged on the threaded joint and an inner casing slidably arranged in the outer casing, an inner wall surface of the outer casing is provided with a mounting groove for the inner casing to slide, a plurality of guide posts are arranged in the mounting groove, and the inner casing is movably sleeved on each guide post. The improved structure is characterized in that the pile casing mechanism further comprises two fixed pulleys symmetrically arranged on the inner wall surface of the outer pile casing, a base connected to the outer pile casing, rotating rods rotatably arranged on two sides of the base, worm wheels sleeved on each rotating rod, winding wheels and a worm rotatably arranged in the base, a reset spring is sleeved on each guide post, each reset spring is connected with the inner pile casing, two sections of spiral teeth are arranged on the worm, the directions of the spiral teeth of each section are opposite, the two worm wheels are meshed and connected to each section of spiral teeth of the worm, a pull rope is wound on each winding wheel, and each pull rope is respectively sleeved on the fixed pulleys and connected with the top surface of the inner pile casing. The protection barrel mechanism is characterized by further comprising a protection grating barrel, threads of the protection grating barrel are sleeved on the junction box, the outer protection barrel is connected to the threaded joint in a threaded mode, the protection grating barrel is used for protecting the junction box, and the protection grating barrel is convenient to disassemble and assemble by adopting threaded connection. The improved scraper is characterized in that a scraping cylinder is arranged in a bottom surface port of the inner protective cylinder, the scraping cylinder is movably sleeved on the hot electrode, an elastic