Simple compressed air filtering device for thermal power plant

Abstract

The utility model relates to the technical field of thermal power plants, and discloses a simple compressed air filtering device for a thermal power plant, which comprises a compressed air inlet pipe, a water removal filter, a water drainage pipe, a first connecting pipe, an oil removal filter, an oil drainage pipe, a second connecting pipe, an impurity removal device and a compressed air outlet pipe, and the drainage pipe is fixedly mounted at the bottom of the water removal filter. According to the simple compressed air filtering device for the thermal power plant, compressed air is introduced into the compressed air inlet pipe, the compressed air passes through the water removal filter, the water drainage pipe, the first connecting pipe, the oil removal filter, the oil drainage pipe and the second connecting pipe, water removal and oil removal operation can be conducted on the compressed air, and finally the compressed air is discharged from the compressed air outlet pipe through the filtering bag. And the filter bag is formed by winding matrix composite glass fibers and high-density pp cotton, so that the compressed air can be further dewatered and deoiled while being dedusted, and the purification effect on the compressed air is good.

Description

Technical Field

[0001] This utility model relates to the field of thermal power plant technology, specifically a simple compressed air filtration device for thermal power plants. Background Technology

[0002] In the denitrification process of thermal power plants, compressed air plays a crucial role. Whether it is promoting the thorough mixing of ammonia and flue gas in SCR denitrification technology or the precise injection of auxiliary reducing agent in SNCR denitrification technology, stable and clean compressed air is indispensable. It is the cornerstone for ensuring the efficient operation of the denitrification system.

[0003] In the actual operation of thermal power plants, the compressed air output by air compressors is a key power source for the stable operation of many systems and equipment. However, it often carries a large number of complex impurities, including dust, oil, and moisture. Although dust particles are small, they can continuously wear down the internal precision components of downstream equipment under long-term airflow impact. Oil is sticky, and once it adheres to the equipment surface, it not only hinders normal heat dissipation but also mixes with other impurities to form dirt that is difficult to clean. Moisture can cause corrosion of equipment, especially after contact with oxygen and other chemicals in the air, accelerating the rusting and damage of metal parts. If these impurities are not effectively removed, they will cause serious damage to downstream equipment. In terms of instrument control systems, impurities can interfere with sensor signal transmission, leading to inaccurate data acquisition, sensor malfunction, and even valve jamming, causing misinterpretation of control signals and severely impacting the automated operation of equipment. In pneumatic conveying systems, the presence of impurities causes continuous friction on the inner wall of the pipe, resulting in pipe wear and even blockage of the pipe during material transport, greatly reducing conveying efficiency, thereby shortening the service life and operating efficiency of the equipment, significantly increasing maintenance costs, affecting the overall economic benefits of thermal power plants, and failing to meet current needs. Utility Model Content

[0004] The purpose of this invention is to provide a simple compressed air filtration device for thermal power plants to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a simple compressed air filtration device for thermal power plants, comprising a compressed air inlet pipe, a water removal filter, a drain pipe, a first connecting pipe, an oil removal filter, an oil discharge pipe, a second connecting pipe, a purification device, and a compressed air outlet pipe. The water removal filter is fixedly installed on the side of the compressed air inlet pipe, the drain pipe is fixedly installed at the bottom of the water removal filter, one end of the first connecting pipe is fixedly installed on the side of the water removal filter, the oil removal filter is fixedly installed at the other end of the first connecting pipe, the oil discharge pipe is fixedly installed at the bottom of the oil removal filter, one end of the second connecting pipe is fixedly installed on the side of the oil removal filter, the purification device is located at the other end of the second connecting pipe, and the compressed air outlet pipe is located on the side of the purification device.

[0006] Preferably, the impurity removal device consists of a shell, a cover, an impurity discharge pipe, a disc, a support leg, and a frame. The shell is fixedly installed at the other end of the second connecting pipe, the cover is located on the top of the shell, the impurity discharge pipe is fixedly installed at the bottom of the shell, the disc is slidably installed inside the shell, the support leg is fixedly installed at the bottom of the disc, and the frame is fixedly installed at the top of the disc.

[0007] Preferably, the surface of the drain pipe is provided with a first valve, and the surface of the oil drain pipe is provided with a second valve. During the compressed air filtration process, the water filter intercepts and accumulates moisture in the compressed air in a specific area. This moisture is discharged through the drain pipe. The first valve is normally closed to ensure the water filter's airtightness and prevent compressed air leakage. When drainage is needed, the first valve is opened, and the accumulated water flows out along the drain pipe under gravity. Similarly, the oil filter intercepts oil in the compressed air during operation, and the oil also accumulates in relevant areas before being discharged through the oil drain pipe. The second valve is also closed during normal operation to ensure the oil filter's airtightness and prevent compressed air leakage. When oil needs to be discharged, the second valve is opened, and the accumulated oil is discharged through the oil drain pipe under gravity.

[0008] Preferably, the outer shell and the cover are connected by a flange, which allows the cover to be removed from the top of the outer shell.

[0009] Preferably, a third valve is provided on the surface of the discharge pipe. During the filtration process of compressed air, the filter bag intercepts and accumulates dust, water, and oil in the compressed air in a specific area. This dust, water, and oil will be discharged through the discharge pipe. The third valve is normally closed. When it is necessary to discharge dust, water, and oil, the third valve is opened, and the accumulated dust, water, and oil are discharged along the discharge pipe under the action of gravity.

[0010] Preferably, the surface of the frame is fitted with a filter bag, and the frame is arranged in a rectangular array on the top of the disc. The filter bag is made of matrix composite glass fiber and high-density PP cotton, which can remove dust from compressed air while further removing water and oil.

[0011] Preferably, the frame abuts against the inside of the cover, and the cover can limit the position of the frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This simple compressed air filtration device for thermal power plants allows compressed air to be introduced into the compressed air inlet pipe. The compressed air then passes through a water removal filter, a drain pipe, a first connecting pipe, an oil removal filter, an oil drain pipe, and a second connecting pipe, where water and oil removal operations are performed. Finally, the compressed air is discharged from the compressed air outlet pipe through a filter bag. The filter bag is made of matrix composite glass fiber and high-density PP cotton, which can remove dust from the compressed air while further removing water and oil, resulting in a good purification effect on the compressed air. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the compressed air inlet pipe, water removal filter, and drain pipe of this utility model.

[0015] Figure 3 This is a schematic diagram of the outer shell, cover, and drain pipe of this utility model;

[0016] Figure 4 This is a schematic diagram of the disc, supporting legs, and frame structure of this utility model.

[0017] In the diagram: 1. Compressed air inlet pipe; 2. Water filter; 3. Drain pipe; 4. First connecting pipe; 5. Oil filter; 6. Oil drain pipe; 7. Second connecting pipe; 8. Impurity removal device; 801. Outer shell; 802. Cover; 803. Impurity discharge pipe; 804. Disc; 805. Support leg; 806. Frame; 9. Compressed air outlet pipe. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4This utility model provides a technical solution: a simple compressed air filtration device for thermal power plants, including 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 drain pipe 6, a second connecting pipe 7, a purification device 8, and a compressed air outlet pipe 9. The water removal filter 2 is fixedly installed on the side of the compressed air inlet pipe 1, the drain pipe 3 is fixedly installed on the bottom of the water removal filter 2, one end of the first connecting pipe 4 is fixedly installed on the side of the water removal filter 2, the oil removal filter 5 is fixedly installed on the other end of the first connecting pipe 4, and the oil drain pipe 6 is fixedly installed on the bottom of the oil removal filter 5. The surface of pipe 3 is equipped with a first valve, and the surface of the oil drain pipe 6 is equipped with a second valve. During the compressed air filtration process, the water filter 2 intercepts and accumulates moisture in the compressed air in a specific area. This moisture is discharged through the drain pipe 3. The first valve is normally closed to ensure the sealing of the water filter 2 and prevent compressed air leakage. When drainage is needed, the first valve is opened, and the accumulated water flows out along the drain pipe 3 under gravity. When the oil filter 5 is working, it intercepts oil in the compressed air, and the oil also accumulates in the relevant parts and is then discharged through the oil drain pipe 6. The second valve is also closed during normal operation to ensure the sealing of the oil filter 5 and prevent compressed air leakage. When oil needs to be discharged, the second valve is opened, and the accumulated oil is discharged through the oil drain pipe 6 under gravity. One end of the second connecting pipe 7 is fixedly installed on the side of the oil filter 5, and the impurity removal device 8 is located at the other end of the second connecting pipe 7. The compressed air outlet pipe 9 is located on the side of the impurity removal device 8.

[0020] The impurity removal device 8 consists of a housing 801, a cover 802, a discharge pipe 803, a disc 804, a support leg 805, and a frame 806. The housing 801 is fixedly installed at the other end of the second connecting pipe 7. The cover 802 is located on the top of the housing 801, and the housing 801 and the cover 802 are connected by a flange, which allows the cover 802 to be removed from the top of the housing 801. The discharge pipe 803 is fixedly installed at the bottom of the housing 801, and a third valve is provided on the surface of the discharge pipe 803. During the compressed air filtration process, the filter bag intercepts and accumulates dust, water, and oil in the compressed air in a specific area. This dust, water, and oil are discharged through the discharge pipe 803. The third valve is normally closed. When the device is in the closed state, the third valve is opened when dust, water, or oil needs to be discharged. The accumulated dust, water, and oil are discharged through the discharge pipe 803 under the action of gravity. The disc 804 is slidably installed inside the outer shell 801. The support leg 805 is fixedly installed at the bottom of the disc 804. The frame 806 is fixedly installed at the top of the disc 804. The surface of the frame 806 is fitted with a filter bag. The frame 806 is distributed in a rectangular array on the top of the disc 804. The filter bag is made of matrix composite glass fiber and high-density PP cotton, which can remove dust from compressed air and further remove water and oil. The frame 806 abuts against the inside of the cover 802, and the cover 802 can limit the frame 806.

[0021] In use, compressed air is introduced into the compressed air inlet pipe 1. The compressed air passes through the water removal filter 2, drain pipe 3, first connecting pipe 4, oil removal filter 5, oil drain pipe 6, and second connecting pipe 7 to remove water and oil. Finally, the compressed air is discharged from the compressed air outlet pipe 9 through the filter bag. The filter bag is made of matrix composite glass fiber and high-density PP cotton, which can remove dust from the compressed air while further removing water and oil, resulting in a good purification effect on the compressed air.

Claims

1. A simple compressed air filtration device for thermal power plants, comprising 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 drain pipe (6), a second connecting pipe (7), a purification device (8), and a compressed air outlet pipe (9), characterized in that: The water filter (2) is fixedly installed on the side of the compressed air inlet pipe (1), the drain pipe (3) is fixedly installed on the bottom of the water filter (2), one end of the first connecting pipe (4) is fixedly installed on the side of the water filter (2), the oil filter (5) is fixedly installed on the other end of the first connecting pipe (4), the oil drain pipe (6) is fixedly installed on the bottom of the oil filter (5), one end of the second connecting pipe (7) is fixedly installed on the side of the oil filter (5), the impurity removal device (8) is located on the other end of the second connecting pipe (7), and the compressed air outlet pipe (9) is located on the side of the impurity removal device (8).

2. The simple compressed air filtration device for thermal power plants according to claim 1, characterized in that: The impurity removal device (8) consists of a shell (801), a cover (802), an impurity discharge pipe (803), a disc (804), a support leg (805), and a frame (806). The shell (801) is fixedly installed at the other end of the second connecting pipe (7). The cover (802) is located on the top of the shell (801). The impurity discharge pipe (803) is fixedly installed at the bottom of the shell (801). The disc (804) is slidably installed inside the shell (801). The support leg (805) is fixedly installed at the bottom of the disc (804). The frame (806) is fixedly installed at the top of the disc (804).

3. The simple compressed air filtration device for thermal power plants according to claim 1, characterized in that: The surface of the drain pipe (3) is provided with a first valve, and the surface of the oil drain pipe (6) is provided with a second valve.

4. The simple compressed air filtration device for thermal power plants according to claim 2, characterized in that: The outer shell (801) and the cover (802) are connected by a flange.

5. The simple compressed air filtration device for thermal power plants according to claim 2, characterized in that: A third valve is provided on the surface of the discharge pipe (803).

6. The simple compressed air filtration device for thermal power plants according to claim 2, characterized in that: The surface of the frame (806) is fitted with a filter bag, and the frame (806) is arranged in a rectangular array on the top of the disk (804).

7. The simple compressed air filtration device for thermal power plants according to claim 2, characterized in that: The frame (806) abuts against the interior of the cover (802).

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