Temperature thermocouple for household garbage incinerator

Abstract

The utility model relates to a temperature thermocouple for a household garbage incinerator, which comprises a thermocouple body and a junction box, the thermocouple body comprises a protective outer tube, an isolation inner tube, a positive lead and a negative lead, one ends of the positive lead and the negative lead are connected with the junction box, and the other ends are led out of the front end of the isolation inner tube and connected with each other. The technical key points are as follows: the protective outer tube is a nickel-based alloy tube, the outer surface of the protective outer tube is provided with a ceramic coating, the isolating inner tube is a ceramic inner tube, ceramic filling particles are arranged between the protective outer tube and the isolating inner tube, the protective outer tube is sleeved with a slag scraping ring, the lower part of the slag scraping ring is provided with a connecting handle, and an electric push rod is fixed on the side wall of the incinerator where the temperature thermocouple is located. A telescopic rod of the electric push rod is parallel to the thermocouple body. The tail end of the telescopic rod is fixedly connected with the free end of the connecting handle. The thermocouple solves the problem that the surface of the thermocouple is easy to slag and damage, and has the advantages of high temperature resistance, corrosion resistance and long service life.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature temperature-measuring thermocouples, in particular to a temperature-measuring thermocouple for a domestic waste incinerator. Background Art

[0002] Thermocouples are commonly used temperature measuring elements in temperature measuring instruments. They directly measure temperature and convert temperature signals into thermoelectric potential signals, which are then converted into the temperature of the measured medium through secondary instruments.

[0003] CN 211373865 U discloses a thermocouple for measuring temperature in a garbage incinerator, which comprises a furnace body, a mounting plate is fixedly connected to the inside of the furnace body, a first through hole is provided at the center of the outer surface of the mounting plate, a scraper pipe is fixedly connected to the outer surface of the mounting plate near the inside of the furnace body, a flange fixedly connected by bolts is provided on the side of the mounting plate near the outside of the furnace body, and a second through hole is provided at the center of the flange. When it is necessary to clean the slag on the surface of the thermocouple, the rotation of the motor drives the gear to rotate, the rotation of the gear drives the gear ring to rotate, the rotation of the gear ring drives the threaded barrel to rotate on the rotating seat, and the rotation of the threaded barrel drives the connecting pipe to rotate and move through the thread, so that the thermocouple and the scraper pipe move relative to each other, and the slag on the surface of the thermocouple is intended to be scrapped and removed, so as to improve the measurement accuracy of the thermocouple. However, the following problems still exist during use: when the thermocouple is used in a garbage incinerator, it must not only withstand the high-temperature scouring effect of fly ash solid particles, but also withstand the severe high-temperature corrosion effect of flue gas. The slag on the surface of the thermocouple is also accelerated when it is removed, which accelerates erosion and perforation, and accelerates scrapping. Utility Model Content

[0004] The utility model aims to provide a temperature measuring thermocouple for a domestic waste incinerator with reasonable structure and reliable use, which solves the problem that the thermocouple surface is easy to slag and easy to damage, is resistant to high temperature and corrosion, and has a long service life.

[0005] The technical solution of the utility model is:

[0006] A temperature measuring thermocouple for a domestic waste incinerator comprises a thermocouple body and a junction box connected to the thermocouple body, wherein the thermocouple body comprises a protective outer tube, an isolating inner tube, a positive lead and a negative lead arranged in the isolating inner tube, one end of the positive lead and the negative lead are connected to the junction box, and the other end is led out of the front end of the isolating inner tube and connected to each other, and the technical key points are: the protective outer tube is a nickel-based alloy tube, and a ceramic coating is provided on its outer surface, the isolating inner tube is a ceramic inner tube, ceramic filling particles are provided between the protective outer tube and the isolating inner tube, a scraping ring is sleeved on the outside of the protective outer tube, and a connecting handle is provided at the lower part of the scraping ring, and an electric push rod is fixed on the side wall of the incinerator where the temperature measuring thermocouple is located, the telescopic rod of the electric push rod is parallel to the thermocouple body, and the end of the telescopic rod is connected and fixed to the free end of the connecting handle.

[0007] The temperature measuring thermocouple for the domestic waste incinerator is as follows: the scraper ring comprises two front and rear ring surfaces, and connecting ribs arranged between the two ring surfaces; the inner circumferences of the two ring surfaces are in contact with the outer circumference of the protective outer tube.

[0008] The above-mentioned domestic waste incinerator uses a temperature measuring thermocouple, and the temperature measuring thermocouple is located in a stepped annular groove on the inner surface of the side wall of the incinerator, and a sealing gasket is fixed to the bottom of the stepped annular groove. An annular pressure cover is provided in the stepped annular groove, and the pressure cover is connected and fixed to the side wall of the incinerator and presses the sealing gasket to ensure the sealing of the incinerator.

[0009] The temperature measuring thermocouple for the domestic waste incinerator is provided on the side wall of the incinerator where the temperature measuring thermocouple is located, and a through hole corresponding to the telescopic rod of the electric push rod is provided in the through hole. A sealing sleeve is provided in the through hole.

[0010] The beneficial effects of the utility model are:

[0011] 1. The protective outer tube is a nickel-based alloy tube and its outer surface is provided with a ceramic coating, wherein the isolation inner tube is a ceramic inner tube, and ceramic filling particles are arranged between the protective outer tube and the isolation inner tube. On the one hand, the high temperature resistance and corrosion resistance of the protective outer tube are improved, and the high temperature erosion resistance and high temperature corrosion resistance are significantly improved. On the other hand, the combination of the nickel-based alloy tube and the ceramic coating avoids damage to the tube body during the scraping process and prolongs the service life of the thermocouple.

[0012] 2. When cleaning the slag on the surface of the thermocouple body, the electric push rod is used to push the connecting handle and the scraper ring to move linearly back and forth, so as to scrape off the slag on the surface of the thermocouple body. Compared with the prior art, the scraper assembly is simpler and more reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 yes Figure 1 Left side view of the middle scraper;

[0015] Figure 3 yes Figure 1 Enlarged view of part A in the middle.

[0016] In the figure: 1. thermocouple body, 101. ceramic coating, 102. protective outer tube, 103. ceramic filling particles, 104. isolation inner tube, 105. negative lead, 106. positive lead, 2. scraper ring, 201. ring surface, 202. connecting rib, 3. gland, 4. incinerator side wall, 5. junction box, 6. sealing gasket, 7. electric push rod, 8. sealing sleeve, 9. connecting handle. DETAILED DESCRIPTION

[0017] The utility model is described in detail according to the accompanying drawings of the specification.

[0018] like Figure 1 to Figure 3 As shown, the temperature measuring thermocouple for the domestic waste incinerator comprises a thermocouple body 1 and a junction box 5 connected to the thermocouple body 1. The thermocouple body 1 comprises a protective outer tube 102, an isolated inner tube 104, a positive lead 106 and a negative lead 105 arranged in the isolated inner tube 104. One end of the positive lead 106 and the negative lead 105 are connected to the junction box 5, and the other ends are led out of the front end of the isolated inner tube 104 and connected to each other.

[0019] The protective outer tube 102 is a nickel-based alloy tube, and its outer surface is provided with a ceramic coating 101, the insulating inner tube 104 is a ceramic inner tube, and ceramic filling particles 103 are provided between the protective outer tube 102 and the insulating inner tube 104 to perform heat conduction and insulation functions.

[0020] The outer part of the protective outer tube 102 is covered with a scraper ring 2, and a connecting handle 9 is provided at the lower part of the scraper ring 2. An electric push rod 7 is fixed to the side wall 4 of the incinerator where the temperature measuring thermocouple is located. The telescopic rod of the electric push rod 7 is parallel to the thermocouple body 1, and the end of the telescopic rod is connected and fixed to the free end of the connecting handle 9. In this embodiment, the scraper ring 2 includes two front and rear annular surfaces 201, and a connecting rib 202 provided between the two annular surfaces 201. The inner circumferences of the two annular surfaces 201 are in contact with the outer circumference of the ceramic coating 101 of the protective outer tube.

[0021] The inner surface of the incinerator side wall 4 where the temperature measuring thermocouple is located is provided with a stepped annular groove, the bottom of which is fixed with a sealing gasket 6, and the stepped annular groove is provided with an annular gland 3, which is connected and fixed to the incinerator side wall 4 and presses the sealing gasket 6 to ensure the sealing of the incinerator. The incinerator side wall 4 where the temperature measuring thermocouple is located is provided with a through hole corresponding to the telescopic rod of the electric push rod 7, and a sealing sleeve 8 is provided in the through hole.

[0022] When in use, the combined structure of the nickel-based alloy tube and the ceramic coating 101 significantly enhances the stability and corrosion resistance of the utility model in a high temperature environment. The double-tube design of the nickel-based alloy tube and the ceramic inner tube prolongs the service life of the thermocouple. When cleaning the slag on the surface of the thermocouple body, the electric push rod 7 is used to push the connecting handle and the scraping ring 2 to move linearly and reciprocatingly, thereby scraping off the slag on the surface of the thermocouple body 1.

[0023] The above is a detailed description of the embodiments of the utility model, but the above contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of the invention of the utility model should still fall within the scope of this patent.

Claims

1. A temperature measuring thermocouple for a domestic waste incinerator, comprising a thermocouple body and a junction box connected to the thermocouple body, wherein the thermocouple body comprises a protective outer tube, an isolation inner tube, a positive lead and a negative lead arranged in the isolation inner tube, one end of the positive lead and the negative lead are connected to the junction box, and the other end leads out of the front end of the isolation inner tube and are connected to each other, characterized in that: The protective outer tube is a nickel-based alloy tube, and its outer surface is provided with a ceramic coating. The insulating inner tube is a ceramic inner tube. Ceramic filling particles are provided between the protective outer tube and the insulating inner tube. The outer part of the protective outer tube is covered with a scraping ring, and the lower part of the scraping ring is provided with a connecting handle. An electric push rod is fixed on the side wall of the incinerator where the temperature measuring thermocouple is located. The telescopic rod of the electric push rod is parallel to the thermocouple body, and the end of the telescopic rod is connected and fixed to the free end of the connecting handle.

2. The temperature measuring thermocouple for a domestic waste incinerator according to claim 1, characterized in that: The scraper ring comprises two annular surfaces, a front annular surface and a rear annular surface, and a connecting rib arranged between the two annular surfaces. The inner circumferences of the two annular surfaces are in contact with the outer circumference of the protective outer tube.

3. The temperature measuring thermocouple for a domestic waste incinerator according to claim 1, characterized in that: The temperature measuring thermocouple is located in a stepped annular groove on the inner surface of the incinerator side wall, a sealing gasket is fixed at the bottom of the stepped annular groove, an annular pressure cover is arranged in the stepped annular groove, the pressure cover is connected and fixed to the incinerator side wall and presses the sealing gasket to ensure the sealing of the incinerator.

4. The temperature measuring thermocouple for a domestic waste incinerator according to claim 1, characterized in that: The side wall of the incinerator where the temperature measuring thermocouple is located is provided with a through hole corresponding to the telescopic rod of the electric push rod, and a sealing sleeve is provided in the through hole.

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