CN-224208184-U - Novel coal pulverizer export abrasionproof temperature external member

Abstract

The application relates to the technical field of coal mill thermometer protection, and provides a novel coal mill outlet wear-resistant temperature kit, which comprises a mounting flange, a fixing flange, a high-temperature-resistant gasket, a temperature measuring element and a wear-resistant rod, wherein the fixing flange is fixed on a coal mill outlet pipe, the mounting flange is arranged on the fixing flange, and the high-temperature-resistant gasket is arranged between the mounting flange and the fixing flange; the mounting flange is provided with a first mounting hole and a second mounting hole at intervals, the first mounting hole and the second mounting hole are arranged in a straight line, the anti-wear rod is inserted into the outlet pipe of the coal mill through the first mounting hole, the temperature measuring element is inserted into the outlet pipe of the coal mill through the second mounting hole, the anti-wear rod is positioned under the temperature measuring element, and the width of the anti-wear rod is equal to or larger than that of the temperature measuring element. The anti-abrasion rod is utilized to block the coal dust in the outlet pipe of the coal mill, so that the flow dividing effect is achieved, the coal dust is prevented from directly impacting the temperature measuring element, the temperature measuring element is well protected, and meanwhile, the temperature monitoring of the temperature measuring element is not affected.

Inventors

• WANG JINYANG
• CHEN ERLEI
• Cao Zexue
• Xu Situ

Assignees

• 陕煤电力石门有限公司

Dates

Publication Date

20260508

Application Date

20250529

Claims (8)

1. 1. The novel coal mill outlet wear-resistant temperature kit is arranged on a coal mill outlet pipe (6) and is characterized by comprising a mounting flange (1), a fixing flange (2), a high-temperature-resistant gasket (3), a temperature measuring element (4) and a wear-resistant rod (8), wherein the fixing flange (2) is fixed on the coal mill outlet pipe (6), the mounting flange (1) is arranged on the fixing flange (2) and the high-temperature-resistant gasket (3) is arranged between the mounting flange (1) and the fixing flange (2), a first mounting hole and a second mounting hole are arranged on the mounting flange (1) at intervals, at least one second mounting hole is arranged, the first mounting hole and the second mounting hole are arranged in a straight line, the wear-resistant rod (8) is inserted into the coal mill outlet pipe (6) through the first mounting hole, the wear-resistant rod (4) is inserted into the coal mill outlet pipe (6), the width of the coal mill outlet pipe (6) is equal to or more than the wear-resistant rod (4), and the width of the wear-resistant rod (4) is equal to or more than or equal to the width of the wear-resistant rod (4) below the coal mill outlet pipe.
2. 2. The novel coal pulverizer outlet wear-resistant temperature kit as claimed in claim 1, wherein the wear-resistant rod (8) is a stainless steel member.
3. 3. The novel coal pulverizer outlet wear-resistant temperature kit as claimed in claim 2, wherein the wear-resistant rod (8) is square in cross section.
4. 4. The novel coal mill outlet wear-resistant temperature kit as claimed in claim 3, wherein the side surface of the wear-resistant rod (8) is arranged at an angle of 45 degrees with respect to the horizontal plane.
5. 5. The novel wear-resistant temperature kit for the outlet of the coal mill according to claim 4, wherein a first sleeve (10) and a second sleeve (11) are welded on the outer side of the mounting flange (1) respectively, the shape of a through hole in the first sleeve (10) is matched with the wear-resistant rod (8), the shape of a through hole in the second sleeve (11) is matched with the temperature measuring element (4), and the first sleeve (10) and the second sleeve (11) are provided with a tightening screw (14) respectively.
6. 6. The novel coal mill outlet wear-resistant temperature kit of claim 5, wherein a handle (9) is arranged at the end of the wear-resistant rod (8).
7. 7. The novel wear-resistant temperature kit for the outlet of the coal mill according to claim 6, wherein the high-temperature-resistant gasket (3) is provided with interference through holes (15) in interference fit with the wear-resistant rod (8) and the temperature measuring element (4) respectively.
8. 8. The novel coal mill outlet wear-resistant temperature kit according to claim 7, wherein the mounting flange (1) and the fixing flange (2) are fixed by at least four hexagon screws (7).

Description

Novel coal pulverizer export abrasionproof temperature external member Technical Field The application belongs to the technical field of thermometer protection of coal mills, and particularly relates to a novel wear-resistant temperature sleeve for an outlet of a coal mill. Background The coal mill is the core equipment of the pulverizing system, and the outlet wind-powder mixing temperature is an important monitoring parameter in the operation of the coal mill, and directly influences the safety, combustion efficiency and environmental protection performance of the system. Raw coal generally contains moisture, and hot drying air is used as a medium when powder is fed. The coal powder can be agglomerated and blocked when the temperature is insufficient, and the spontaneous combustion of the coal powder and even explosion of a coal pulverizing system can be caused when the temperature is too high. The mixing temperature of the air and the powder at the outlet of a coal mill of a thermal power plant is generally controlled to be 70-90 ℃, and the specific range is different according to the type of the coal. Monitoring of the mixing temperature of the coal mill outlet air powder is particularly important. Therefore, the outlet air-powder mixing temperature DCS of a single coal mill is provided with 3 measuring points, and 3 anti-abrasion armoured thermal resistors are correspondingly arranged on the outlet pipe of the coal mill to serve as temperature measuring elements. Because the coal mill runs for a long time, the temperature measuring element is still frequently worn under the scouring of hot air and coal dust. This situation severely affects the safe operation of the milling system. The temperature measuring element for mixing air and powder at the outlet of the coal mill is seriously worn, the wear resistance of the temperature measuring element is insufficient to support the normal service life of the temperature measuring element, and the human resource waste can be caused by frequently replacing the temperature measuring element once, so that the production cost is too high. Disclosure of utility model Aiming at the defects in the prior art, the embodiment of the application aims to provide a novel wear-resistant temperature kit for the outlet of a coal mill, which has the advantages of convenient replacement and protection for a temperature measuring element. The novel wear-resistant temperature kit for the coal mill outlet is arranged on a coal mill outlet pipe and comprises a mounting flange, a fixing flange, a high-temperature-resistant gasket, a temperature measuring element and a wear-resistant rod, wherein the fixing flange is fixed on the coal mill outlet pipe, the mounting flange is arranged on the fixing flange, the high-temperature-resistant gasket is arranged between the mounting flange and the fixing flange, a first mounting hole and a second mounting hole are formed in the mounting flange at intervals, at least one second mounting hole is formed in the second mounting hole, the first mounting hole and the second mounting hole are arranged in a straight line, the wear-resistant rod is inserted into the coal mill outlet pipe through the first mounting hole, the temperature measuring element is inserted into the coal mill outlet pipe through the second mounting hole, pulverized coal in the coal mill outlet pipe flows from bottom to top, the wear-resistant rod is positioned under the temperature measuring element, and the width of the wear-resistant rod is larger than or equal to the width of the temperature measuring element. In one embodiment, the wear bar is a stainless steel member. In one embodiment, the wear bar is square in cross section. In one embodiment, the side of the wear bar is disposed at 45 ° to the horizontal. In one embodiment, the outer side of the mounting flange is welded with a first sleeve and a second sleeve respectively, the shape of a through hole in the first sleeve is matched with the anti-wear rod, the shape of a through hole in the second sleeve is matched with the temperature measuring element, and the first sleeve and the second sleeve are provided with a tightening screw respectively. In one embodiment, the end of the wear bar is provided with a handle. In one embodiment, the high temperature resistant gasket is respectively provided with an interference through hole in interference fit with the wear-resistant rod and the temperature measuring element. In one embodiment, the mounting flange and the fixing flange are fixed by at least four hexagon screws. The novel wear-resistant temperature kit for the coal mill outlet has the beneficial effects that the wear-resistant rod is arranged right below the temperature measuring element, so that the wear-resistant rod is utilized to block the coal dust in the coal mill outlet pipe, the flow distribution effect is achieved, the coal dust is prevented from directly impacting on the temperature measuring element, the