CN215808426U - System for automatically adjusting water level of hot well during startup - Google Patents
System for automatically adjusting water level of hot well during startup Download PDFInfo
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- CN215808426U CN215808426U CN202122033572.8U CN202122033572U CN215808426U CN 215808426 U CN215808426 U CN 215808426U CN 202122033572 U CN202122033572 U CN 202122033572U CN 215808426 U CN215808426 U CN 215808426U
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Abstract
The application discloses a hot well water level automatic regulating system during startup, which comprises a hot water well water supplementing pipeline (2), a hot water well (1), a shaft seal heater connecting pipeline, a low-pressure heater connecting pipeline, a deaerator water feeding pipeline (3), a condensate pump pipeline, a startup water discharging pipeline (13) and a trench (14); the hot water well water replenishing pipeline (2) is communicated with a water replenishing end of the hot water well (1), and a hot water well water replenishing door (10) and a hot water well electric water replenishing door (11) are arranged on the hot water well water replenishing pipeline (2); one end of the condensate pump pipeline is connected to the drainage end of the hot water well (1), and the other end of the condensate pump pipeline is connected with the water inlet end of the shaft seal heater connecting pipeline and the water inlet end of the low-pressure heater connecting pipeline. The technical scheme of the utility model can ensure the effectiveness and the accuracy of the water level control in the hot water well, and the operation is simple and convenient.
Description
Technical Field
The utility model relates to a system for automatically adjusting the water level of a hot well during startup, and belongs to the field of power generation equipment.
Background
The condenser hot water well is used for collecting condensed water and ensuring the operation of a condensed water pump; the water level of the condenser is monitored through the hot water well, and the phenomenon that the safe and economic operation is influenced due to the fact that condensed water is overcooled or vacuum drops caused by overhigh water level is prevented. When the steam turbine is started, condensed water in hot well water needs to be discharged to a trench through a pipeline because the hot well water quality cannot meet the water demand of the deaerator and cannot be recycled to the deaerator; and in order to ensure the safe and stable operation of the shaft seal heater and the condensate pump when the steam turbine is started, the water level in the hot water well also needs to be controlled. The water level control of current hot-water well relies on the valve control on the pipeline mostly to rely on the manual work to operate mostly, not only complex operation, control accuracy through the manual control water level is relatively poor moreover, is difficult to satisfy the water level control requirement.
SUMMERY OF THE UTILITY MODEL
The utility model provides an automatic hot well water level adjusting system during startup, which ensures the effectiveness and accuracy of water level control in a hot well and is simple and convenient to operate.
The utility model adopts the technical scheme that the automatic water level regulating system for the hot well during starting comprises a hot water well water supplementing pipeline, the hot water well, a shaft seal heater connecting pipeline, a low-pressure heater connecting pipeline, a deaerator water feeding pipeline, a condensate pump pipeline, a starting water discharging pipeline and a trench;
the hot water well water replenishing pipeline is communicated with a water replenishing end of the hot water well, and a hot water well water replenishing door and a hot water well electric water replenishing door are arranged on the hot water well water replenishing pipeline;
one end of the condensate pump pipeline is connected to the water discharging end of the hot water well, and the other end of the condensate pump pipeline is connected with the water inlet end of the shaft seal heater connecting pipeline and the water inlet end of the low-pressure heater connecting pipeline; one end of the water feeding pipeline of the deaerator is communicated with the water discharging end of the shaft seal heater connecting pipeline and the water discharging end of the low-pressure heater connecting pipeline, and the other end of the water feeding pipeline of the deaerator is communicated with the deaerator; a deaerator water feeding door and a deaerator water feeding electric door are arranged on the deaerator water feeding pipeline; one end of the starting machine water discharge pipeline is communicated with the deaerator water supply pipeline, the other end of the starting machine water discharge pipeline is connected to the trench, and a starting machine water discharge door is arranged on the starting machine water discharge pipeline; and the joint of the water discharging pipeline of the starting machine and the water feeding pipeline of the deaerator is positioned between the water feeding door of the deaerator and the water feeding electric door of the deaerator.
Preferably, in the automatic water level regulating system for a hot well during startup, the shaft seal heater connecting pipeline comprises a shaft seal heater, a shaft seal heater water inlet door and a shaft seal heater water drainage door, and the shaft seal heater water inlet door and the shaft seal heater water drainage door are respectively connected to a water inlet end and a water drainage end of the shaft seal heater; the low-pressure heater connecting pipeline comprises a low-pressure heater, a low-pressure heater water inlet door and a low-pressure heater water drainage door, and the low-pressure heater water inlet door and the low-pressure heater water drainage door are respectively connected to a water inlet end and a water drainage end of the low-pressure heater.
Preferably, in the automatic water level regulating system for the hot well during startup, the shaft seal heater connecting pipeline is connected in parallel with a shaft seal heater auxiliary pipeline, and an auxiliary pipeline water gate is arranged at the middle section of the shaft seal heater auxiliary pipeline; the low-pressure heater connecting pipeline is connected with a low-pressure heater auxiliary pipeline in parallel, and an auxiliary pipeline water gate is arranged in the middle section of the low-pressure heater auxiliary pipeline.
Preferably, in the automatic water level regulating system for the hot well during startup, the shaft seal heater connecting pipeline and the low-pressure heater connecting pipeline are arranged in parallel.
Preferably, the automatic water level regulating system for the hot well during startup comprises two groups of condensate pump pipelines, wherein the two groups of condensate pump pipelines are arranged in parallel; and the two control output ends of the water pressure detection control device are respectively and electrically connected with the control input ends of the condensed water pumps of the two groups of condensed water pump pipelines.
Preferably, the automatic water level regulating system for the hot well at the start-up time further comprises a water replenishing direct drainage pipeline, wherein one end of the water replenishing direct drainage pipeline is connected with a water replenishing pipeline of the hot well, and the other end of the water replenishing direct drainage pipeline is connected with a water discharging pipeline of the start-up machine; the connection part of the water replenishing direct drainage pipeline and the water replenishing pipeline of the hot water well is positioned between the hot water well water replenishing door and the electric water replenishing door of the hot water well; an electric control door is arranged on the water replenishing straight exhaust pipeline.
Preferably, the automatic water level regulating system for the hot well during startup further comprises an auxiliary well; the water inlet end of the auxiliary well is connected with an auxiliary drain pipe, and the drain end of the auxiliary well is communicated with the water replenishing direct drainage pipeline; the auxiliary drain pipe is communicated with the side wall of the hot water well, and the distance between the position where the auxiliary drain pipe is connected with the side wall of the hot water well and the bottom end surface of the hot water well is 500-600 mm.
The application has the advantages that:
among the technical scheme of this application, at the steam turbine start-up in-process, carry out the moisturizing through hot-water well moisturizing pipeline in to the hot-water well, through the condensate pump pipeline, open the machine and put the water piping and carry out waterproofly to the hot-water well, through intaking, waterproof flow difference, keep the water level in the hot-water well. And when the steam turbine starts the process, at first close the oxygen-eliminating device and go up the sluice gate and open quick-witted bleeder gate, hot-water well moisturizing door, through the oxygen-eliminating device on water the electrically operated gate, the electronic moisturizing door of hot-water well control hot-water well intake and the drainage, the water level control process of hot-water well can carry out long-range regulation and control, convenient operation in the control room this moment. And through the automatically controlled original paper such as the fluviograph in the hot-water well to the water-feeding electric door of oxygen-eliminating device, the electronic moisturizing door of hot-water well carries out automatic control, can realize the automatic regulation and control of hot-water well water level, can guarantee the degree of accuracy of water level regulation and control.
According to the technical scheme, cold water is supplied to the shaft seal heater and the low-pressure heater through condensate water in the hot water well, the water inlet door and the water drainage door are arranged at the two ends of the shaft seal heater and the two ends of the low-pressure heater, and the water inlet drainage quantity of the shaft seal heater and the water drainage quantity of the low-pressure heater are controlled. When the shaft seal heater and the low-pressure heater do not need cooling water supply or the starting water discharge pipeline needs to accelerate water discharge, the auxiliary pipeline of the shaft seal heater and the auxiliary pipeline of the low-pressure heater can be opened, so that water discharged from the hot water well bypasses the shaft seal heater and the low-pressure heater, and the water discharge speed is accelerated. Compared with series connection, the water inlet and outlet control effect of the shaft seal heater and the low-pressure heater can be improved by connecting the shaft seal heater connecting pipeline and the low-pressure heater connecting pipeline in parallel, the shaft seal heater and the low-pressure heater can be controlled respectively, and the water inlet and outlet control device is wide in application range
In the technical scheme of this application, through two sets of condensate pump pipelines, realize one and prepare one, when one of them group damaged, can start another group and carry out the drainage operation. In the drainage process, the water pressure detection control device detects the water pressure of flowing through, when the condensate pump of one of the groups of condensate pump pipelines is opened and the water pressure of the water pressure detection control device is lower, the damage of the condensate pump of the group of condensate pump pipelines can be judged, the condensate pump of the other group of condensate pump pipelines is opened, and the smoothness of drainage is ensured.
In the technical scheme of this application, need not carry out the water supply and the hot water stock when in the hot-water well in moisturizing and the hot-water well moisturizing pipeline when more, can open the direct pipeline of moisturizing and directly will deposit the water and arrange to open the machine and put the water pipe way, guarantee the water level height in the hot-water well. When a pipeline connected with the drainage end of the hot water well is blocked or fails, the auxiliary drainage pipe can be opened, so that water in the hot water well is drained into the auxiliary water well, the position where the auxiliary drainage pipe is connected with the side wall of the hot water well is 500-600mm away from the bottom end face of the hot water well, the water level in the hot water well can be kept at 500-600mm, and the water level requirement of the hot water well when a steam turbine is started is met.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present application;
fig. 2 is a schematic structural diagram of embodiment 2 of the present application.
Detailed Description
The technical features of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in the figure, the embodiment is an automatic water level regulating system for a hot well at startup, and the system comprises a hot well water replenishing pipeline 2, a hot well 1, a shaft seal heater connecting pipeline, a low-pressure heater connecting pipeline, a deaerator water feeding pipeline 3, a condensate pump pipeline, a startup water discharging pipeline 13 and a trench 14;
the hot water well water replenishing pipeline 2 is communicated with a water replenishing end of the hot water well 1, and a hot water well water replenishing door 10 and a hot water well electric water replenishing door 11 are arranged on the hot water well water replenishing pipeline 2;
one end of the condensate pump pipeline is connected to the drainage end of the hot water well 1, and the other end of the condensate pump pipeline is connected with the water inlet end of the shaft seal heater connecting pipeline and the water inlet end of the low-pressure heater connecting pipeline; one end of the water feeding pipeline 3 of the deaerator is communicated with the water discharging end of the shaft seal heater connecting pipeline and the water discharging end of the low-pressure heater connecting pipeline, and the other end of the water feeding pipeline 3 of the deaerator is communicated with the deaerator; the water feeding pipeline 3 of the deaerator is provided with a deaerator water feeding door 121 and a deaerator water feeding electric door 122; one end of the starting machine water discharging pipeline 13 is communicated with the deaerator water feeding pipeline 3, the other end of the starting machine water discharging pipeline 13 is connected to the trench 14, and a starting machine water discharging door 20 is arranged on the starting machine water discharging pipeline 13; the joint of the water discharge pipeline 13 of the starting machine and the water feeding pipeline 3 of the deaerator is positioned between the water feeding door 121 of the deaerator and the water feeding electric door 122 of the deaerator.
The shaft seal heater connecting pipeline comprises a shaft seal heater 4, a shaft seal heater water inlet door 5 and a shaft seal heater water drain door 6, wherein the shaft seal heater water inlet door 5 and the shaft seal heater water drain door 6 are respectively connected to a water inlet end and a water drain end of the shaft seal heater 4; the low-pressure heater connecting pipeline comprises a low-pressure heater 7, a low-pressure heater water inlet door 8 and a low-pressure heater water drain door 9, wherein the low-pressure heater water inlet door 8 and the low-pressure heater water drain door 9 are respectively connected to a water inlet end and a water drain end of the low-pressure heater 7.
In the starting process of the steam turbine, water is supplied to the hot water well 1 through the hot water well water supply pipeline 2, the hot water well 1 is prevented from being water through the condensate pump pipeline and the starting and water discharging pipeline 13, and the water level in the hot water well 1 is kept through the water inlet and water prevention flow difference. And when the steam turbine starts the process, at first close oxygen-eliminating device water feeding door 121 and open machine of starting discharge door 20, hot-water well moisturizing door 10, through oxygen-eliminating device water feeding electrically operated gate 122, the electronic moisturizing door 11 of hot-water well control the intake and the drainage of hot-water well 1, the water level control process of hot-water well 1 can carry out long-range regulation and control, convenient operation in the control room this moment. And carry out automatic control to water-feeding electric door 122, the electronic moisturizing door 11 of hot-water well on the oxygen-eliminating device through the automatically controlled components such as the fluviograph in the hot-water well 1, can realize the automatic regulation and control of hot-water well 1 water level, can guarantee the degree of accuracy of water level regulation and control.
The shaft seal heater connecting pipeline is connected with a shaft seal heater auxiliary pipeline 15 in parallel, and an auxiliary pipeline water gate is arranged at the middle section of the shaft seal heater auxiliary pipeline 15; the low-pressure heater connecting pipeline is connected with a low-pressure heater auxiliary pipeline 16 in parallel, and an auxiliary pipeline water gate is arranged in the middle section of the low-pressure heater auxiliary pipeline 16.
The shaft seal heater 4 and the low-pressure heater 7 are supplied with cold water through condensed water in the hot water well 1, and water inlet and water outlet amounts of the shaft seal heater 4 and the low-pressure heater 7 are controlled by arranging water inlet doors and water outlet doors at two ends of the shaft seal heater 4 and two ends of the low-pressure heater 7. When the shaft seal heater 4 and the low-pressure heater 7 do not need cooling water supply or the starting and draining pipeline 13 needs to accelerate draining, the auxiliary pipeline 15 of the shaft seal heater and the auxiliary pipeline 16 of the low-pressure heater can be opened, so that the draining of the hot water well bypasses the shaft seal heater 4 and the low-pressure heater 7, and the draining speed is accelerated.
Example 2
This example differs from example 1 in that: the shaft seal heater connecting pipeline and the low-pressure heater connecting pipeline are arranged in parallel. Compared with the series connection, the water inlet and drainage control effect of the shaft seal heater 4 and the low-pressure heater 7 can be improved by connecting the shaft seal heater connecting pipeline and the low-pressure heater connecting pipeline in parallel, and the shaft seal heater connecting pipeline and the low-pressure heater connecting pipeline can be controlled respectively, so that the application range is wide.
The automatic hot well water level regulating system comprises two groups of condensate pump pipelines which are arranged in parallel; and a water pressure detection control device 17 is arranged at the outlet end of the two groups of condensed water pump pipelines after being connected in parallel, and two control output ends of the water pressure detection control device 17 are respectively and electrically connected with the control input ends of the condensed water pumps of the two groups of condensed water pump pipelines.
One of the two sets of condensate pump pipelines is used for standby, and when one set of the condensate pump pipelines is damaged, the other set of the condensate pump pipelines can be started to perform drainage operation. In the drainage process, the water pressure detection control device 17 detects the water pressure of flowing through, when the condensate pump of one group of condensate pump pipelines is opened and the water pressure of the water pressure detection control device 17 is lower, the damage of the condensate pump of the group of condensate pump pipelines can be judged, the condensate pump of the other group of condensate pump pipelines is opened, and the smoothness of drainage is ensured.
The automatic water level adjusting system for the hot well at the start-up time further comprises a water supplementing direct drainage pipeline 18, one end of the water supplementing direct drainage pipeline 18 is connected with the hot well water supplementing pipeline 2, and the other end of the water supplementing direct drainage pipeline 18 is connected with the start-up water drainage pipeline 13; the connection part of the water replenishing direct drainage pipeline 18 and the hot water well water replenishing pipeline 2 is positioned between the hot water well water replenishing door 10 and the electric hot water well water replenishing door 11; an electric control door is arranged on the water replenishing direct discharging pipeline 18.
The automatic water level regulating system for the hot well at startup also comprises an auxiliary well 18; the water inlet end of the auxiliary well 18 is connected with an auxiliary drain pipe 19, and the drain end of the auxiliary well 18 is communicated with the water replenishing direct drainage pipeline 18; the auxiliary drain pipe 19 is communicated with the side wall of the hot water well 1, and the distance between the position where the auxiliary drain pipe 19 is connected with the side wall of the hot water well 1 and the bottom end surface of the hot water well 1 is 500-600 mm.
When water is not required to be supplemented in the hot water well 1 and the water supply and hot water storage in the hot water well water supplementing pipeline 2 is large, the water supplementing direct discharging pipeline 18 can be opened to directly discharge stored water to the starting and discharging pipeline 13, and the water level height in the hot water well 1 is ensured. When a pipeline connected with the water discharging end of the hot water well 1 is blocked or has a fault, the auxiliary water discharging pipe 19 can be opened, so that water in the hot water well 1 is discharged into the auxiliary water well 18, the distance between the position where the auxiliary water discharging pipe 19 is connected with the side wall of the hot water well 1 and the bottom end surface of the hot water well 1 is 500-600mm, the water level in the hot water well 1 can be ensured to be kept at 500-600mm, and the requirement of the water level of the hot water well when a steam turbine is started is met.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.
Claims (7)
1. The utility model provides a when starting machine hot-well water level automatic regulating system which characterized in that: comprises a hot water well water replenishing pipeline (2), a hot water well (1), a shaft seal heater connecting pipeline, a low-pressure heater connecting pipeline, a deaerator water feeding pipeline (3), a condensate pump pipeline, a start-up water discharging pipeline (13) and a trench (14);
the hot water well water replenishing pipeline (2) is communicated with a water replenishing end of the hot water well (1), and a hot water well water replenishing door (10) and a hot water well electric water replenishing door (11) are arranged on the hot water well water replenishing pipeline (2);
one end of the condensate pump pipeline is connected to the drainage end of the hot water well (1), and the other end of the condensate pump pipeline is connected with the water inlet end of the shaft seal heater connecting pipeline and the water inlet end of the low-pressure heater connecting pipeline; one end of the water feeding pipeline (3) of the deaerator is communicated with the water discharging end of the shaft seal heater connecting pipeline and the water discharging end of the low-pressure heater connecting pipeline, and the other end of the water feeding pipeline (3) of the deaerator is communicated with the deaerator; a deaerator water feeding door (121) and a deaerator water feeding electric door (122) are arranged on the deaerator water feeding pipeline (3); one end of the starting machine water discharge pipeline (13) is communicated with the deaerator water supply pipeline (3), the other end of the starting machine water discharge pipeline (13) is connected to a trench (14), and a starting machine water discharge door (20) is arranged on the starting machine water discharge pipeline (13); the joint of the water discharging pipeline (13) of the starting machine and the water feeding pipeline (3) of the deaerator is positioned between the water feeding door (121) of the deaerator and the water feeding electric door (122) of the deaerator.
2. The system for automatically adjusting the water level of a hot well at startup of a machine according to claim 1, wherein: the shaft seal heater connecting pipeline comprises a shaft seal heater (4), a shaft seal heater water inlet door (5) and a shaft seal heater water drainage door (6), wherein the shaft seal heater water inlet door (5) and the shaft seal heater water drainage door (6) are respectively connected to a water inlet end and a water drainage end of the shaft seal heater (4); the low-pressure heater connecting pipeline comprises a low-pressure heater (7), a low-pressure heater water inlet door (8) and a low-pressure heater water discharge door (9), wherein the low-pressure heater water inlet door (8) and the low-pressure heater water discharge door (9) are respectively connected to a water inlet end and a water discharge end of the low-pressure heater (7).
3. The system for automatically adjusting the water level of a hot well at startup of a machine according to claim 2, wherein: the shaft seal heater connecting pipeline is connected with a shaft seal heater auxiliary pipeline (15) in parallel, and an auxiliary pipeline water gate is arranged at the middle section of the shaft seal heater auxiliary pipeline (15); the low-pressure heater connecting pipeline is connected with a low-pressure heater auxiliary pipeline (16) in parallel, and an auxiliary pipeline water gate is arranged in the middle section of the low-pressure heater auxiliary pipeline (16).
4. The system for automatically adjusting the water level of a hot well at startup of a machine according to claim 2, wherein: the shaft seal heater connecting pipeline and the low-pressure heater connecting pipeline are arranged in parallel.
5. The system for automatically adjusting the water level of a hot well at startup of a machine according to claim 1, wherein: the system comprises two groups of condensate pump pipelines which are arranged in parallel; and a water pressure detection control device (17) is arranged at the outlet end of the two groups of condensed water pump pipelines after being connected in parallel, and two control output ends of the water pressure detection control device (17) are respectively and electrically connected with the control input ends of the condensed water pumps of the two groups of condensed water pump pipelines.
6. The system for automatically adjusting the water level of a hot well at startup of a machine according to claim 1, wherein: the water-replenishing direct discharging device further comprises a water-replenishing direct discharging pipeline (18), one end of the water-replenishing direct discharging pipeline (18) is connected with the water-replenishing pipeline (2) of the hot water well, and the other end of the water-replenishing direct discharging pipeline (18) is connected with the machine starting water discharging pipeline (13); the connection part of the water replenishing direct drainage pipeline (18) and the hot water well water replenishing pipeline (2) is positioned between the hot water well water replenishing door (10) and the electric hot water well water replenishing door (11); an electric control door is arranged on the water replenishing direct discharging pipeline (18).
7. The system for automatically adjusting the water level of a hot well at startup of a machine according to claim 6, wherein: also comprises an auxiliary water well (18); the water inlet end of the auxiliary well (18) is connected with an auxiliary drain pipe (19), and the drain end of the auxiliary well (18) is communicated with the water replenishing direct drainage pipeline (18); the auxiliary drain pipe (19) is communicated with the side wall of the hot water well (1), and the distance between the position where the auxiliary drain pipe (19) is connected with the side wall of the hot water well (1) and the bottom end surface of the hot water well (1) is 500-600 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122033572.8U CN215808426U (en) | 2021-08-26 | 2021-08-26 | System for automatically adjusting water level of hot well during startup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122033572.8U CN215808426U (en) | 2021-08-26 | 2021-08-26 | System for automatically adjusting water level of hot well during startup |
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| Publication Number | Publication Date |
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| CN215808426U true CN215808426U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122033572.8U Active CN215808426U (en) | 2021-08-26 | 2021-08-26 | System for automatically adjusting water level of hot well during startup |
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| CN (1) | CN215808426U (en) |
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2021
- 2021-08-26 CN CN202122033572.8U patent/CN215808426U/en active Active
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