CN210219328U - Compressed air centralized supply system of thermal power plant with double-pressure double-mother pipe - Google Patents
Compressed air centralized supply system of thermal power plant with double-pressure double-mother pipe Download PDFInfo
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- CN210219328U CN210219328U CN201920756106.2U CN201920756106U CN210219328U CN 210219328 U CN210219328 U CN 210219328U CN 201920756106 U CN201920756106 U CN 201920756106U CN 210219328 U CN210219328 U CN 210219328U
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Abstract
The utility model provides a two thermal power factory compressed air of mother's pipe of two pressures centralized supply system which characterized in that: including a plurality of air compressors, every air compressor corresponds and sets up a modular aftertreatment device, wherein: at least 4 of the air compressors are control gas high-pressure air compressors, the rest are low-pressure air compressors for dust removal, the control gas high-pressure air compressors are connected with the corresponding high-pressure combined type post-treatment devices through gas main pipes for instruments, and the low-pressure air compressors for dust removal are connected with the corresponding low-pressure combined type post-treatment devices through dust removal main pipes; the high-pressure combined post-treatment device is connected with a corresponding control gas storage tank and a plant gas storage tank through a post-treatment outlet large main pipe, and the low-pressure combined post-treatment device is connected with a corresponding dust-removing pneumatic conveying gas storage tank through a post-treatment outlet large main pipe; the utility model discloses a behind the two air compressor machines of pressure, the interior ash removal air compressor machine power for pneumatic conveyor of factory can reduce, practices thrift the station service power consumption, can reduce comprehensive annual expense, has better economic benefits and energy-conserving benefit.
Description
Technical Field
The utility model belongs to the technical field of the compressed air of thermal power factory concentrates the supply, concretely relates to compressed air of thermal power factory concentrates supply system of two female pipes of pressure.
Background
At present, in the system design of a domestic thermal power plant, the design modes of gas supply control, gas supply for maintenance and gas supply for ash removal in the plant, combined planning and centralized arrangement are wide. Generally, a compressed air system is centrally arranged in a whole plant, air compressors with the same specification and grade are adopted to supply compressed air with the same pressure, and air for pneumatic transmission such as instrument, control, overhaul, ash removal and the like in the plant or air for desulfurization and the like is provided.
The existing compressed air system of the thermal power plant is not optimized according to the requirement of an air source, so that the system has large throttling loss and low energy utilization rate; meanwhile, in the pipeline arrangement design process, the air compressors and the post-processing devices are arranged in a unit mode, a main pipe is arranged at a post-processing outlet, if one air compressor or one post-processing device fails, the corresponding post-processing device or the corresponding air compressor needs to be simultaneously cut off and overhauled, but if the post-processing device and the air compressor are in cross failure, two sets of air compressors and two sets of post-processing devices need to be simultaneously cut off and overhauled, the quantity of compressed air in the whole plant can be insufficient at the moment, the power plant is shut down, and the influence is serious.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a compressed air of thermal power factory of two female pipes of two pressures concentrates supply system, through adopting doublestage, two female control system compressed air supply systems, improves the fail safe nature of thermal power factory compressed air system, reduces the energy consumption to reduce the accident rate of power plant, reach economy, safety, green's operational mode.
In order to achieve the above object, the utility model provides a supply system is concentrated to compressed air of two female pipes of two pressures, its characterized in that: including a plurality of air compressors, every air compressor corresponds and sets up a modular aftertreatment device, wherein:
at least 4 of the air compressors are control gas high-pressure air compressors, the rest are low-pressure air compressors for dust removal, the control gas high-pressure air compressors are connected with the corresponding high-pressure combined type post-treatment devices through gas main pipes for instruments, and the low-pressure air compressors for dust removal are connected with the corresponding low-pressure combined type post-treatment devices through dust removal main pipes; the high-pressure combined post-treatment device is connected with a corresponding control gas storage tank and a plant gas storage tank through a post-treatment outlet large main pipe, and the low-pressure combined post-treatment device is connected with a corresponding dust-removing pneumatic conveying gas storage tank through a post-treatment outlet large main pipe; an electric regulating valve and an electric isolating door are arranged on a large main pipe of a post-treatment outlet among the control gas storage tank, the plant gas storage tank and the dust-removing pneumatic conveying gas storage tank and used for regulating a high-pressure gas source to a low-pressure gas source.
Further, the control is with 4 high-pressure air compressors, and wherein, 2 are the appearance factory uses high-pressure air compressor, and 2 are the reserve high-pressure air compressor of operation and maintenance.
Further, the control gas high-pressure air compressor is a screw air compressor, and the high-pressure grade is 0.75MPa.g-0.85 MPa.g.
Furthermore, the low-pressure grade of the low-pressure air compressor for removing the ash is 0.55MPa.g-0.65MPa.g, and the single-machine capacity is set according to the same high-pressure grade.
Furthermore, more than 2 control gas storage tanks are arranged, and the capacity of the control gas storage tanks is maintained for about 5 minutes in the whole plant; 1 plant gas storage tank is arranged, and the capacity of the plant gas storage tank is maintained for about 5 minutes; the air storage tank for ash removal pneumatic conveying in the plant is arranged according to the number of the boilers.
Compared with the prior art, the utility model has the advantages of as follows:
(1) after the double-pressure air compressor is adopted, the power of the air compressor for ash removal pneumatic transmission in a plant can be reduced, the plant power consumption is saved, the comprehensive annual cost can be reduced, and better economic benefit and energy-saving benefit are achieved. (2) By adopting the combined post-treatment front and rear main pipe system, the air supply requirement of the power plant can be met when equipment is in a cross fault, the safety and reliability of the system are improved, and the influence on the normal operation of the power plant is reduced.
Drawings
FIG. 1: do the utility model discloses the structure schematic diagram.
In the figure: 1-controlling a gas high-pressure air compressor; 2-a low-pressure air compressor for ash removal; 3-high pressure combined post-treatment device; 4-low pressure combined post-treatment device; 5-controlling the gas storage tank; 6-factory air storage tanks; 7-an air storage tank for ash removal pneumatic conveying in a plant; 8-a mother pipe for the instrument; 9-ash removal of the main pipe; 10-post-treatment outlet large main pipe; 11-a manual isolation door; 12-an electric ball valve; 13-a check valve; 14-a first electric isolating door, 15-an electric regulating valve; 16-second electrically powered isolation gate.
Detailed Description
As shown in fig. 1, the utility model relates to a compressed air centralized supply system of two female pipes of two pressure, including 8 air compressors, every air compressor corresponds sets up a combined type aftertreatment device for dry, clean compressed air, wherein 4 air compressors are for the control of pressure level 0.75mpa.g-0.85mpa.g screw air compressor 1, 4 air compressors are for the dust removal of pressure level 0.55mpa.g-0.65mpa.g low pressure air compressor 2, the dust removal is with 2 unit capacities of low pressure air compressor 1 according to the same setting of control with high pressure air compressor 1; 2 of the 4 control gas high-pressure air compressors 1 are factory-used air compressors for instruments, and 2 are standby air compressors for operation and maintenance; the outlet of the control gas high-pressure air compressor 1 is connected to an instrument gas main pipe 8, and manual isolation doors 11 are respectively arranged on connecting pipelines; an outlet of the instrument air main pipe 8 is connected with the corresponding high-pressure combined type post-processing device 3 corresponding to each control air high-pressure air compressor 1, and manual isolation doors 11 are respectively arranged on connecting pipelines; the ash removal low-pressure air compressor 2 is connected with an ash removal main pipe 9, and manual isolation doors 11 are respectively arranged on connecting pipelines; the outlet of the ash removal main pipe 9 is connected with a low-pressure combined post-treatment device 4 corresponding to the low-pressure air compressor 2 for ash removal, and manual isolation doors 11 are respectively arranged on connecting pipelines; the high-pressure combined post-treatment device 3 and the low-pressure combined post-treatment device 4 are connected with a post-treatment outlet main pipe 10, and a first electric isolating door 12 and a check valve 13 are respectively arranged on connecting pipelines; 6 gas storage tanks are arranged, wherein 3 gas storage tanks are used for controlling gas consumption and 5 gas storage tanks, and the capacity of the gas storage tanks is maintained for controlling gas consumption of about 5 minutes in the whole plant; 1 is a plant gas storage tank 6, and the capacity is maintained for about 5 minutes; 2 plant ash removal conveying gas storage tanks 7 are arranged according to the number of the boilers in the plant; the post-treatment outlet main pipe 10 is respectively connected with a control gas storage tank 5, a plant gas storage tank 6 and a dust-removing pneumatic conveying gas storage tank 7, and a first electric isolation door 14 and a check valve 13 are sequentially arranged on each connecting pipeline; an electric adjusting valve 16 and a second electric isolating door 15 are arranged on a post-treatment outlet main pipe 10 connected between the control gas storage tank 5 and one side of the plant gas storage tank 6 and the other side of the gas storage tank 7 for ash removal pneumatic conveying, and a high-pressure gas source is adjusted to a low-pressure gas source for ash removal conveying gas.
The main process of the system is as follows: 4 high-pressure air compressor machine come gas and get into the appearance with the female pipe, supply to high-pressure combination formula after treatment device again, dry clean, when arbitrary high-pressure air compressor machine or high-pressure combination formula after treatment device broke down, can switch over standby equipment at any time, all can guarantee the air feed requirement. The same applies to the low-pressure gas flow for ash removal. And then, compressed air enters the post-treatment outlet large main pipe through the combined post-treatment device, the electric regulating valve and the second electric isolating door are both closed during normal air supply, and the standby system can be opened when the pressure of the instrument air main pipe is lower. When the pressure in the ash removal gas main pipe is lower, the electric regulating valve and the second electric isolating door on the large main pipe of the aftertreatment outlet can be opened on the premise of ensuring the control gas use, and the high-pressure gas source is regulated to the low-pressure gas source for ash removal and gas delivery.
After the double-pressure air compressor is adopted, the power of the air compressor for ash removal pneumatic transmission in a plant can be reduced, the plant power consumption is saved, the comprehensive annual cost can be reduced, and better economic benefit and energy-saving benefit are achieved.
Claims (5)
1. The utility model provides a two thermal power factory compressed air of mother's pipe of two pressures centralized supply system which characterized in that: including a plurality of air compressors, every air compressor corresponds and sets up a modular aftertreatment device, wherein:
at least 4 of the air compressors are control gas high-pressure air compressors, the rest are low-pressure air compressors for dust removal, the control gas high-pressure air compressors are connected with the corresponding high-pressure combined type post-treatment devices through gas main pipes for instruments, and the low-pressure air compressors for dust removal are connected with the corresponding low-pressure combined type post-treatment devices through dust removal main pipes; the high-pressure combined post-treatment device is connected with a corresponding control gas storage tank and a plant gas storage tank through a post-treatment outlet large main pipe, and the low-pressure combined post-treatment device is connected with a corresponding dust-removing pneumatic conveying gas storage tank through a post-treatment outlet large main pipe; an electric regulating valve and an electric isolating door are arranged on a large main pipe of a post-treatment outlet among the control gas storage tank, the plant gas storage tank and the dust-removing pneumatic conveying gas storage tank and used for regulating a high-pressure gas source to a low-pressure gas source.
2. The compressed air centralized supply system of the thermal power plant with the double-pressure double-mother pipe as claimed in claim 1, wherein: the control is with 4 high-pressure air compressors, and wherein, 2 are appearance factory high-pressure air compressors, and 2 are the reserve high-pressure air compressors of operation reserve and maintenance reserve.
3. The compressed air centralized supply system of the thermal power plant with the double-pressure double-mother pipe as claimed in claim 1 or 2, wherein: the control gas high-pressure air compressor is a screw air compressor, and the high-pressure grade is 0.75MPa.g-0.85 MPa.g.
4. The compressed air centralized supply system of the thermal power plant with the double-pressure double-mother pipe as claimed in claim 1, wherein: the low-pressure grade of the low-pressure air compressor for removing the ash is 0.55MPa.g-0.65MPa.g, and the single-machine capacity is set according to the same high-pressure grade.
5. The compressed air centralized supply system of the thermal power plant with the double-pressure double-mother pipe as claimed in claim 1, wherein: the number of the control gas storage tanks is more than 2, and the capacity of the control gas storage tanks is maintained for about 5 minutes in the whole plant; 1 plant gas storage tank is arranged, and the capacity of the plant gas storage tank is maintained for about 5 minutes; the air storage tank for ash removal pneumatic conveying in the plant is arranged according to the number of the boilers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920756106.2U CN210219328U (en) | 2019-05-23 | 2019-05-23 | Compressed air centralized supply system of thermal power plant with double-pressure double-mother pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920756106.2U CN210219328U (en) | 2019-05-23 | 2019-05-23 | Compressed air centralized supply system of thermal power plant with double-pressure double-mother pipe |
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| CN210219328U true CN210219328U (en) | 2020-03-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115253534A (en) * | 2022-08-01 | 2022-11-01 | 广州发展电力科技有限公司 | Compressed air post-processing equipment system |
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- 2019-05-23 CN CN201920756106.2U patent/CN210219328U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115253534A (en) * | 2022-08-01 | 2022-11-01 | 广州发展电力科技有限公司 | Compressed air post-processing equipment system |
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