CN221218994U - Pressure water supply equipment of process water system of wet desulfurization device of thermal power plant - Google Patents
Pressure water supply equipment of process water system of wet desulfurization device of thermal power plant Download PDFInfo
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- CN221218994U CN221218994U CN202322261782.1U CN202322261782U CN221218994U CN 221218994 U CN221218994 U CN 221218994U CN 202322261782 U CN202322261782 U CN 202322261782U CN 221218994 U CN221218994 U CN 221218994U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 239
- 238000000034 method Methods 0.000 title claims abstract description 74
- 230000008569 process Effects 0.000 title claims abstract description 73
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 15
- 230000023556 desulfurization Effects 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 77
- 230000001502 supplementing effect Effects 0.000 claims abstract description 40
- 230000001105 regulatory effect Effects 0.000 claims description 59
- 238000011010 flushing procedure Methods 0.000 claims description 22
- 239000000498 cooling water Substances 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims 10
- 230000003020 moisturizing effect Effects 0.000 claims 6
- 239000012716 precipitator Substances 0.000 claims 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims 1
- 239000003546 flue gas Substances 0.000 claims 1
- 230000001276 controlling effect Effects 0.000 description 6
- 239000000428 dust Substances 0.000 description 6
- 239000013589 supplement Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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Abstract
The utility model discloses pressure water supply equipment of a process water system of a wet desulfurization device of a thermal power plant, which comprises a pressure water tank, a compressed air pipeline, a blow-down pipe, a pressure regulation module, a process water supplementing pipeline, a liquid level regulation module, a water supplementing pump and a process water supply pipeline, wherein the pressure water tank comprises a liquid space positioned at the lower part and a gas space positioned at the upper part, the compressed air pipeline and the blow-down pipe are respectively communicated with the gas space positioned at the upper part of the pressure water tank, an interface is positioned at the top of the gas space of the pressure water tank, the compressed air pipeline and the blow-down pipe are both communicated with the pressure regulation module, the process water supplementing pipeline is communicated with the pressure water tank, the water supplementing pump is arranged on the process water supplementing pipeline, the liquid level regulation module is communicated with the process water pipeline, and the process water supply pipeline is respectively communicated with the liquid spaces of the pressure water tank, so that water is supplied to different water units, and the problems that the water supplying pump needs to be frequently started and the water consumption of different process water are solved.
Description
Technical Field
The utility model relates to the technical field of process water systems of wet desulfurization devices of thermal power plants, in particular to pressure water supply equipment of a process water system of a wet desulfurization device of a thermal power plant.
Background
In a wet desulfurization device of a thermal power plant, a normal pressure tank is adopted as a process water tank, water in the tank is supplemented from a process water pipe network in a factory, a demister flushing water pump is arranged to supply flushing water to the demister, a wet electric dust collector (hereinafter called wet electric) flushing water pump is arranged to supply flushing water to the wet electric dust collector, a machine seal and a cooling water supply pump are arranged to provide machine seal water and cooling water for the device, a floating ball liquid level switch is arranged on the tank top to control the switch of a water supplementing valve on a water supplementing pipeline, when the liquid level of the process water tank is lower than a liquid level low limit value, the water supplementing valve is started to supplement water into the tank, when the liquid level of the process water tank is higher than the liquid level Gao Xianzhi, the water supplementing valve is closed to stop supplementing water, in order to avoid roof fall of the process water tank, the liquid level high limit value of the water tank cannot be set too high, and in order to ensure that inlets of all process water supply pumps (the demister flushing water pump, the wet electric flushing water pump, the machine seal and the cooling water supply pump) have a certain pressure head, and the liquid level low limit value of the water tank cannot be set too small.
The prior art has the defects that: in the actual operation process, in order to increase the effective volume of the process water tank as much as possible, the liquid level low limit value of the process water tank is set smaller, when the liquid level in the water tank is lower, cavitation is easily generated at the inlet of each process water supply pump, and the impeller of the pump is irreversibly damaged; the auxiliary equipment of the normal pressure process water tank is more, wherein the demister flushing water pump and the wet electric flushing water pump are operated intermittently, automatic control is not easy to realize, and the operation workload is large.
Disclosure of utility model
Aiming at the defects or improvement demands of the prior art, the utility model provides pressure water supply equipment of a process water system of a wet desulphurization device of a thermal power plant, which comprises a pressure water tank, a compressed air pipeline, a blow-down pipe, a pressure regulating module, a process water supplementing pipeline, a liquid level regulating module, a water supplementing pump and a process water supply pipeline. The compressed air pipeline and the blow-down pipe are respectively communicated with the gas space of the pressure water tank, the connector is positioned at the top of the gas space of the pressure water tank, and the compressed air pipeline and the blow-down pipe are both connected with the pressure regulating module and are used for controlling the pressure of the gas space of the pressure water tank; the process water supplementing pipeline is communicated with the pressure water tank, the interface is positioned at the top of the gas space of the pressure water tank, water is directly supplemented to the pressure water tank from the process water pipeline of the factory through the water supplementing pump, the liquid level adjusting module is connected with the process water supplementing pipeline and used for controlling the liquid level in the pressure water tank, the safety valve is arranged at the top of the pressure water tank and communicated with the gas space, and the pressure water tank is automatically tripped and decompressed when the pressure water tank runs over pressure, so that the running safety of the pressure water tank is ensured; the water supply device adopts the liquid level adjusting module and the pressure adjusting module to control the liquid level and the water supply pressure of the device, thereby solving the problems that the process water supply pump needs to be frequently started and the frequency and the water consumption of different process water are different.
In order to achieve the above object, the utility model provides a wet desulfurization device process water system pressure water supply device of a thermal power plant, which comprises a pressure water tank, a compressed air pipeline, a blow-down pipe, a pressure regulating module, a process water supplementing pipeline, a liquid level regulating module, a water supplementing pump and a process water supply pipeline, wherein the pressure water tank comprises a liquid space positioned at the lower part and a gas space positioned at the upper part, the compressed air pipeline and the blow-down pipe are respectively communicated with the gas space of the pressure water tank, the interfaces of the compressed air pipeline and the blow-down pipe are positioned at the top of the gas space of the pressure water tank, the compressed air pipeline and the blow-down pipe are communicated with the pressure regulating module, the process water supplementing pipeline is communicated with the pressure water tank, the interfaces of the compressed air pipeline and the blow-down pipe are positioned at the bottom of the liquid space of the pressure water tank, the water supplementing pump is arranged on the process water supplementing pipeline, the liquid level regulating module is communicated with the process water supplementing pipeline, the liquid level regulating module is positioned on the outlet pipeline of the water supplementing pump, the process water supply pipeline is provided with a plurality of process water supply pipelines, the process water supply pipeline is respectively communicated with the liquid space of the pressure water tank, and the water supply pipeline is positioned at the bottom of the liquid interface of the pressure unit.
Further, the liquid level adjusting module comprises a third electric adjusting valve and a liquid level transmitter, the liquid level transmitter is respectively communicated with the gas space and the liquid space, the liquid level transmitter detects the liquid level of the pressure water tank, the liquid level transmitter is in signal connection with the third electric adjusting valve, the third electric adjusting valve and the liquid level transmitter regulate and control the liquid level of the pressure water tank, and the third electric adjusting valve controls the on-off of the process water supplementing pipeline.
Further, the pressure regulating module comprises a first electric regulating valve, a second electric regulating valve, a pressure indicating controller and a pressure transmitter, wherein the pressure transmitter is connected with the gas space, an interface of the pressure transmitter is positioned at the top of the gas space, the pressure transmitter detects the pressure of the gas space, the pressure transmitter is in signal communication with the pressure indicating controller, the pressure indicating controller is respectively in signal communication with the first electric regulating valve and the second electric regulating valve so as to regulate and control the pressure of the gas space, the first electric regulating valve is arranged on the compressed air pipeline, the compressed air pipeline is communicated with an external compressed air source, and the second electric regulating valve is arranged on the blow-down pipe.
Further, the process water supply pipeline comprises a demister flushing water supply pipeline, a wet-type electric dust collector flushing water supply pipeline and a mechanical seal and cooling water supply pipeline, wherein the demister flushing water supply pipeline, the wet-type electric dust collector flushing water supply pipeline and the mechanical seal and cooling water supply pipeline are all communicated with the liquid space, the interfaces of the mechanical seal and the cooling water supply pipeline are located at the bottom of the liquid space and are used for supplying water to different water units respectively, and valves are arranged on the demister flushing water supply pipeline, the wet-type electric dust collector flushing water supply pipeline and the mechanical seal and the cooling water supply pipeline.
Further, the safety valve is arranged at the top of the pressure water tank and is communicated with the gas space. In general, the above technical solutions conceived by the present utility model, compared with the prior art, enable the following beneficial effects to be obtained:
1. The utility model provides pressure water supply equipment of a process water system of a wet desulfurization device of a thermal power plant, which comprises a pressure water tank, a compressed air pipeline, a blow-down pipe, a pressure regulation module, a process water supplementing pipeline, a liquid level regulation module, a water supplementing pump and a process water supply pipeline, wherein the compressed air pipeline and the blow-down pipe are respectively communicated with a gas space of the pressure water tank, an interface is positioned at the top of the gas space, the compressed air pipeline and the blow-down pipe are both connected with the pressure regulation module and used for controlling the pressure of the gas space, the process water supplementing pipeline is communicated with the pressure water tank, the interface is positioned at the top of the gas space, the water supplementing pipeline is connected with the process water supplementing pipeline in a factory through the water supplementing pump, the liquid level regulation module is positioned on an outlet pipeline of the water supplementing pump and used for controlling the liquid level in the pressure water tank, a safety valve is arranged at the top of the pressure water tank and is communicated with the gas space, the pressure water tank automatically jumps and is depressurized when the pressure water tank runs, a plurality of process water supply pipelines communicated with the liquid space are arranged, the interface is positioned at the bottom of the liquid space and used for supplying water to process units with different frequencies and water consumption.
2. The utility model provides pressure water supply equipment of a wet desulphurization device process water system of a thermal power plant, which adopts a pressure regulating module comprising a first electric regulating valve, a second electric regulating valve, a pressure indicating controller and a pressure transmitter, wherein the pressure transmitter is connected with a gas space for detecting the pressure of the pressure transmitter and transmitting a detection value to the pressure indicating controller, the controller can preset a control pressure value, the pressure indicating controller, the first electric regulating valve and the second electric regulating valve are in signal linkage control with the pressure of the gas space, the first electric regulating valve is arranged on a compressed air pipeline, the compressed air pipeline is communicated with an external compressed air source, and the second electric regulating valve is arranged on a blow-down pipe for exhausting and decompressing. When the pressure of the gas space is lower than a set pressure value, the pressure indication controller charges and pressurizes the gas space by adjusting the opening of the first electric regulating valve, at the moment, the second electric regulating valve is closed, when the pressure of the gas space reaches the set value, the pressure indication controller controls to close the first electric regulating valve, when the pressure of the gas space is higher than the set pressure value, the pressure indication controller controls to discharge and release the air outwards by adjusting the opening of the second electric regulating valve, at the moment, the first electric regulating valve is closed, when the pressure of the gas space is reduced to the set value, the pressure indication controller controls to close the second electric regulating valve, the safety valve automatically jumps and releases the pressure when the air pressure is too high or the pressure regulating module fails, compressed air is used as a stable pressure power source, the pressure of the tank top gas space is ensured to be stable by adopting the step control, and the compressed air is used as compressible fluid, so that the buffering capacity is high, the consumption of the compressed air tank is extremely low, and the effective volume of the pressure is large; the pressure water supply mode ensures the stability of water supply flow and pressure, can realize automatic control, and greatly lightens the working intensity of operators.
Drawings
Fig. 1 is a schematic structural diagram of a pressure water supply device of a process water system of a wet desulfurization device of a thermal power plant according to an embodiment of the utility model.
Like reference numerals denote like technical features throughout the drawings, in particular: 1-pressure water tank, 2-compressed air pipeline, 3-blow-down pipe, 4-first electric control valve, 5-second electric control valve, 6-pressure indication controller, 7-pressure transmitter, 8-process water replenishing pipeline, 9-water replenishing pump, 10-third electric control valve, 11-liquid level transmitter, 12-relief valve, 13-defroster wash water supply pipeline, 14-wet electric dust collector wash water supply pipeline, 15-mechanical seal and cooling water supply pipeline.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1, the embodiment provides a process water system pressure water supply device of a wet desulfurization device of a thermal power plant, which comprises a pressure water tank 1, a compressed air pipeline 2, a blow-down pipe 3, a pressure adjusting module, a process water supplementing pipeline 8, a liquid level adjusting module, a water supplementing pump 9 and a process water supply pipeline. The pressure water tank 1 comprises a liquid space positioned at the lower part and a gas space positioned at the upper part, wherein the gas space and the liquid space are limited by a process water liquid level surface in the tank and change in size along with the up-and-down floating of the liquid level surface; the compressed air pipeline 2 and the blow-down pipe 3 are respectively communicated with the gas space of the pressure water tank 1, the connector is positioned at the top of the gas space, the compressed air pipeline 2 and the blow-down pipe 3 are both connected with the pressure regulating module for controlling the pressure of the gas space, the process water supplementing pipe 8 is communicated with the pressure water tank 1 and supplements water to the pressure water tank from a process water pipe network of a factory through the supplementing water pump 9, and the liquid level regulating module is connected with the process water supplementing pipe 8 for controlling the water storage capacity and the liquid level surface in the pressure water tank 1; the safety valve 12 is arranged at the top of the pressure water tank 1 and is communicated with the gas space, and the pressure is automatically released when the pressure water tank runs over pressure, so that the running safety of the pressure water tank 1 is ensured; the water supply equipment adopts the liquid level adjusting module and the pressure adjusting module to control the liquid level and the water supply pressure of the equipment, thereby solving the problems that the water pump is required to be frequently started and the frequency and the water consumption of different process water are different.
Further, as shown in fig. 1, the pressure regulating module comprises a first electric regulating valve 4, a second electric regulating valve 5, a pressure indicating controller 6 and a pressure transmitter 7, wherein the pressure transmitter 7 is connected with the gas space for detecting the pressure thereof, the interface is positioned at the top of the gas space and sends the detected value to the pressure indicating controller 6, the controller can presets a control pressure value, the pressure indicating controller 6 controls the pressure of the gas space in a linkage manner with the first electric regulating valve 4 and the second electric regulating valve 5, the first electric regulating valve 4 is arranged on the compressed air pipeline 2, the compressed air pipeline 2 is communicated with an external compressed air source, and the second electric regulating valve 5 is arranged on the blow-down pipe 3 for exhausting and decompressing. When the pressure of the gas space is lower than a set pressure value, the pressure indication controller 6 adjusts and opens the opening of the first electric regulating valve 4 on the compressed air pipeline 2, the gas space is inflated and pressurized through the compressed air pipeline 2, the second electric regulating valve 5 is closed at the moment, and when the pressure of the gas space reaches the set pressure value, the pressure indication controller 6 controls the first electric regulating valve 4 to be closed; when the pressure of the gas space is higher than a set pressure value, the pressure indication controller 6 controls and regulates the opening of the second electric regulating valve 5 on the blow-down pipe 3, the gas space is subjected to air exhaust and pressure relief through the blow-down pipe 3, at the moment, the first electric regulating valve 4 is closed, and when the pressure of the gas space is reduced to the set value, the pressure indication controller 6 controls and closes the second electric regulating valve 5; the relief valve 12 automatically trips to relieve pressure in the event of an over-pressure or failure of the pressure regulating module. Compressed air is used as a pressure stabilizing power source, the pressure stability of the gas space at the top of the tank is guaranteed by adopting the step control, the compressed air is used as a compressible fluid, the buffering capacity is high, and the consumption of the compressed air is very low.
Further, as shown in fig. 1, the liquid level adjusting module comprises a third electric adjusting valve 10 and a liquid level transmitter 11, wherein the liquid level transmitter 11 is respectively communicated with the gas space and the liquid space and is used for detecting the liquid level of the pressure water tank 1, and the liquid level transmitter 11 is interlocked with the third electric adjusting valve 10 to control the liquid level of the pressure water tank 1; when the liquid level is lower than the low water level limit, starting the water supplementing pump 9, and opening the third electric regulating valve 10 to supplement water for the pressure water tank 1; when the liquid level is higher than the high water level limit, the third electric regulating valve 10 is closed, the water supplementing pump 9 is closed, and the water supplementing of the pressure water tank 1 is stopped.
Further, as shown in fig. 1, the process water supply pipeline comprises a demister flushing water supply pipeline 13, a wet electric flushing water supply pipeline 14 and a mechanical seal and cooling water supply pipeline 15, all of which are communicated with the liquid space of the pressure water tank 1, the interface is positioned at the bottom of the liquid space, valves are arranged on all three water supply pipelines, and a plurality of pipelines are arranged for conveying, so that the process water supply pipeline can adapt to the use time period and the use amount requirements of different water units; the pressure water supply mode uses compressed air as a power source to supply water for all water units, a process water supply pump is not required to be arranged independently, and the working condition that the pump outlet is blocked or the pump is frequently started and stopped due to the switching of valve groups of all water units is avoided.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (5)
1. The utility model provides a thermal power factory wet flue gas desulfurization device process water system pressure water supply equipment, its characterized in that includes pressure water pitcher (1), compressed air pipeline (2), blow down pipe (3), pressure regulating module, process water moisturizing pipeline (8), liquid level regulating module, moisturizing pump (9) and process water supply pipeline, pressure water pitcher (1) including be located the liquid space of lower part and the gas space of upper portion, compressed air pipeline (2) with blow down pipe (3) respectively with the gas space intercommunication of pressure water pitcher (1), compressed air pipeline (2) with the interface of blow down pipe (3) is located pressure water pitcher (1) gas space's top, compressed air pipeline (2) with blow down pipe (3) all with pressure regulating module intercommunication, process water moisturizing pipeline (8) with pressure water pitcher (1) switch-on, compressed air pipeline (2) with the interface of blow down pipe (3) is located pressure water pitcher (1) liquid space bottom, water moisturizing pump (9) set up in pressure water pitcher (8) water moisturizing pipeline (8) water level regulating module (1) gas space's top, water moisturizing pipeline (8) water supplementing pipeline (8) are located pressure regulating module, water supply pipeline (9) respectively, the interface of the process water supply pipeline is positioned at the bottom of the liquid space of the pressure water tank (1) and supplies water to different water using units.
2. The wet desulfurization device process water system pressure water supply device of a thermal power plant according to claim 1, wherein the liquid level adjusting module comprises a third electric adjusting valve (10) and a liquid level transmitter (11), the liquid level transmitter (11) is respectively communicated with the gas space and the liquid space, the liquid level transmitter (11) detects the liquid level of the pressure water tank (1), the liquid level transmitter (11) is in signal connection with the third electric adjusting valve (10), the liquid level of the pressure water tank (1) is adjusted and controlled by the third electric adjusting valve (10) and the liquid level transmitter (11), and the third electric adjusting valve (10) controls the on-off of the process water supplementing pipeline (8).
3. The wet desulfurization device process water system pressure water supply device of a thermal power plant according to claim 1, wherein the pressure regulating module comprises a first electric regulating valve (4), a second electric regulating valve (5), a pressure indicating controller (6) and a pressure transmitter (7), the pressure transmitter (7) is connected with the gas space, an interface of the pressure transmitter (7) is positioned at the top of the gas space, the pressure transmitter (7) detects the pressure of the gas space, the pressure transmitter (7) is in signal communication with the pressure indicating controller (6), the pressure indicating controller (6) is in signal communication with the first electric regulating valve (4) and the second electric regulating valve (5) respectively so as to regulate the pressure of the gas space, the first electric regulating valve (4) is arranged on the compressed air pipeline (2), the compressed air pipeline (2) is communicated with an external compressed air source, and the second electric regulating valve (5) is arranged on the blow-down pipe (3).
4. The wet desulfurization device process water system pressure water supply device of a thermal power plant according to claim 1, wherein the process water supply pipeline comprises a demister flushing water supply pipeline (13), a wet electric precipitator flushing water supply pipeline (14) and a mechanical seal and cooling water supply pipeline (15), all of which are communicated with the liquid space, the interfaces of the demister flushing water supply pipeline (13), the wet electric precipitator flushing water supply pipeline (14) and the mechanical seal and cooling water supply pipeline (15) are positioned at the bottom of the liquid space and are respectively used for supplying water for different water units, and valves are arranged on the demister flushing water supply pipeline (13), the wet electric precipitator flushing water supply pipeline (14) and the mechanical seal and cooling water supply pipeline (15).
5. A wet desulfurization device process water system pressure water supply device for a thermal power plant according to any one of claims 1 to 4, comprising a safety valve (12), wherein the safety valve (12) is arranged at the top of the pressure water tank (1) and is communicated with the gas space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322261782.1U CN221218994U (en) | 2023-08-22 | 2023-08-22 | Pressure water supply equipment of process water system of wet desulfurization device of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322261782.1U CN221218994U (en) | 2023-08-22 | 2023-08-22 | Pressure water supply equipment of process water system of wet desulfurization device of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221218994U true CN221218994U (en) | 2024-06-25 |
Family
ID=91567277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322261782.1U Active CN221218994U (en) | 2023-08-22 | 2023-08-22 | Pressure water supply equipment of process water system of wet desulfurization device of thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221218994U (en) |
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2023
- 2023-08-22 CN CN202322261782.1U patent/CN221218994U/en active Active
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