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CN-224221010-U - Simple filtering device for compressed air of thermal power plant

CN224221010UCN 224221010 UCN224221010 UCN 224221010UCN-224221010-U

Abstract

The utility model relates to the technical field of thermal power plants, and discloses a simple compressed air filtering device of a thermal power plant, which comprises a compressed air inlet pipe, a water removal filter, a drain pipe, a first connecting pipe, an oil removal filter, an oil drain pipe, a second connecting pipe, a impurity removing device and a compressed air outlet pipe, wherein the water removal filter is fixedly arranged on the side surface of the compressed air inlet pipe, and the drain pipe is fixedly arranged at the bottom of the water removal filter. This simple and easy filter equipment of compressed air of thermal power plant is through letting in compressed air in the compressed air intake pipe, and compressed air can carry out dewatering and deoiling operation through dewatering filter, drain pipe, first connecting pipe, deoiling filter, oil pipe, second connecting pipe, and compressed air passes through the filter bag and discharges from compressed air outlet duct at last, and the filter bag is formed by matrix composite glass fibre and cotton winding of high density pp, can further dewater and deoil when removing dust to compressed air, and is effectual to compressed air's purification.

Inventors

  • GUO KA
  • HAN JIANZHEN
  • QU XIAOLIANG
  • SHI SHAOYI
  • XU FENG

Assignees

  • 邹平县宏旭热电有限公司
  • 山东宏桥新型材料有限公司

Dates

Publication Date
20260512
Application Date
20250519

Claims (7)

  1. 1. The simple filtering device for the compressed air of the thermal power plant comprises a compressed air inlet pipe (1), a water removal filter (2), a drain pipe (3), a first connecting pipe (4), an oil removal filter (5), an oil removal pipe (6), a second connecting pipe (7), a impurity removal device (8) and a compressed air outlet pipe (9), and is characterized in that the water removal filter (2) is fixedly arranged on the side face of the compressed air inlet pipe (1), the drain pipe (3) is fixedly arranged at the bottom of the water removal filter (2), one end of the first connecting pipe (4) is fixedly arranged on the side face of the water removal filter (2), the oil removal filter (5) is fixedly arranged at the other end of the first connecting pipe (4), one end of the second connecting pipe (7) is fixedly arranged on the side face of the oil removal filter (5), and the impurity removal device (8) is arranged at the other end of the second connecting pipe (7), and the compressed air outlet pipe (9) is arranged on the side face of the impurity removal device (8).
  2. 2. The simple filtering device for compressed air in a thermal power plant according to claim 1, wherein the impurity removing device (8) comprises a shell (801), a cover body (802), an impurity removing pipe (803), a disc (804), supporting legs (805) and a frame (806), the shell (801) is fixedly arranged at the other end of the second connecting pipe (7), the cover body (802) is arranged at the top of the shell (801), the impurity removing pipe (803) is fixedly arranged at the bottom of the shell (801), the disc (804) is slidably arranged in the shell (801), the supporting legs (805) are fixedly arranged at the bottom of the disc (804), and the frame (806) is fixedly arranged at the top of the disc (804).
  3. 3. The simple filtering device for compressed air of a thermal power plant according to claim 1, wherein the surface of the drain pipe (3) is provided with a first valve, and the surface of the drain pipe (6) is provided with a second valve.
  4. 4. The simple filtering device for compressed air of a thermal power plant according to claim 2, wherein the shell (801) and the cover body (802) are connected through flanges.
  5. 5. The simple filtering device for compressed air of a thermal power plant according to claim 2, wherein a third valve is arranged on the surface of the impurity discharging pipe (803).
  6. 6. The simple filtering device for compressed air of a thermal power plant according to claim 2, wherein the surface of the frame (806) is sleeved with the filter bags, and the frame (806) is distributed on the top of the disc (804) in a rectangular array.
  7. 7. The simple filter device for compressed air in a thermal power plant according to claim 2, wherein the frame (806) is abutted against the inside of the cover body (802).

Description

Simple filtering device for compressed air of thermal power plant Technical Field The utility model relates to the technical field of thermal power plants, in particular to a simple compressed air filtering device of a thermal power plant. Background In the denitration process of a thermal power plant, compressed air plays an extremely critical role. Whether the ammonia gas and the flue gas are pushed to be fully mixed in the SCR denitration technology or the auxiliary reducing agent is accurately sprayed in the SNCR denitration technology, stable and clean compressed air cannot be separated, and the compressed air is a basic stone for guaranteeing the high-efficiency operation of a denitration system. In the actual operation of a thermal power plant, compressed air output by an air compressor is a key power source for stable operation of a plurality of systems and equipment, however, a large amount of complex impurities are often trapped, and dust, greasy dirt, moisture and the like are covered. The dust particles are small, but can continuously abrade the internal precise parts of downstream equipment under the long-term airflow impact, the greasy dirt has viscosity, once being attached to the surface of the equipment, the greasy dirt not only can obstruct the normal heat dissipation, but also can be mixed with other impurities to form dirt which is difficult to clean, and the moisture can cause the corrosion of the equipment, especially the rust and damage of the metal parts after contacting with oxygen and other chemical substances in the air. If these impurities are not removed effectively, they can present a serious hazard to downstream equipment. In the pneumatic conveying system, the existence of the impurities can lead the inner wall of the pipeline to be continuously rubbed, so that the pipeline is worn, even the pipeline is blocked by materials in the conveying process, the conveying efficiency is greatly reduced, the service life and the running efficiency of the equipment are further reduced, the maintenance cost is greatly increased, the overall economic benefit of a thermal power plant is influenced, and the current requirements cannot be met. Disclosure of utility model The utility model aims to provide a simple filtering device for compressed air of a thermal power plant, so as to solve the problems in the background technology. In order to achieve the purpose, the simple filtering device for the compressed air in the thermal power plant comprises a compressed air inlet pipe, a water removing filter, a drain pipe, a first connecting pipe, a deoiling filter, an oil discharging pipe, a second connecting pipe, a impurity removing device and a compressed air outlet pipe, wherein the water removing filter is fixedly arranged on the side face of the compressed air inlet pipe, the drain pipe is fixedly arranged at the bottom of the water removing filter, one end of the first connecting pipe is fixedly arranged on the side face of the water removing filter, the deoiling filter is fixedly arranged at the other end of the first connecting pipe, the oil discharging pipe is fixedly arranged at the bottom of the deoiling filter, one end of the second connecting pipe is fixedly arranged on the side face of the deoiling filter, the impurity removing device is arranged at the other end of the second connecting pipe, and the compressed air outlet pipe is arranged on the side face of the impurity removing device. Preferably, the impurity removing device comprises a shell, a cover body, an impurity removing pipe, a disc, supporting legs and a frame, wherein the shell is fixedly arranged at the other end of the second connecting pipe, the cover body is arranged at the top of the shell, the impurity removing pipe is fixedly arranged at the bottom of the shell, the disc is slidably arranged in the shell, the supporting legs are fixedly arranged at the bottom of the disc, and the frame is fixedly arranged at the top of the disc. Preferably, the surface of the drain pipe is provided with a first valve, the surface of the drain pipe is provided with a second valve, in the filtering process of compressed air, the water removal filter can intercept and accumulate moisture in the compressed air in a specific area, the moisture can be discharged through the drain pipe, the first valve is in a closed state at ordinary times, so that the tightness of the water removal filter can be ensured, the compressed air is prevented from leaking, when the drain pipe is needed, the first valve is opened, accumulated water flows out along the drain pipe under the action of gravity, when the oil removal filter works, greasy dirt in the compressed air can be intercepted, and the greasy dirt can be accumulated at related parts and then discharged through the drain pipe. The second valve is also closed during normal operation to ensure the tightness of the oil removal filter, avoid the leakage of compressed air, and open the second valve