CN213542043U - System for efficiently recycling steam drainage of power station plant area to hot well of host condenser - Google Patents
System for efficiently recycling steam drainage of power station plant area to hot well of host condenser Download PDFInfo
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- CN213542043U CN213542043U CN202022664157.8U CN202022664157U CN213542043U CN 213542043 U CN213542043 U CN 213542043U CN 202022664157 U CN202022664157 U CN 202022664157U CN 213542043 U CN213542043 U CN 213542043U
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Abstract
The utility model discloses a system for with hydrophobic high-efficient recovery of power station factory steam to host computer condenser hot-well, include: the steam drainage side comprises a plurality of drainage pipelines, a drainage main pipe and a pressure drainage tank, wherein the input end of the drainage main pipe is respectively connected with the output ends of the plurality of drainage pipelines, the tail end of the drainage main pipe is connected with the pressure drainage tank, a steam chamber is arranged at the upper part of the pressure drainage tank, and saturated steam is filled in the steam chamber in an operating state; the drain recovery side comprises a drain recovery pipeline, the drain recovery pipeline is connected with the pressure drain tank, and drain in the pressure drain tank is connected to a hot well of the host condenser through the drain recovery pipeline; on the cooling water side, cooling water realizes a circulation loop of the cooling water in the pressure drain tank through a variable frequency circulating pump; and the controller is electrically connected with the pressure drain tank and the variable-frequency circulating pump respectively. The utility model discloses a hydrophobic recovery system of steam when guaranteeing to retrieve quality of water, has reduced the operation maintenance cost again, has realized hydrophobic high-efficient recovery.
Description
Technical Field
The utility model relates to a power station auxiliary engine system synthesizes and optimizes technical field, concretely relates to with the hydrophobic high-efficient system of retrieving to host computer condenser hot-well of power station factory steam.
Background
The hydrophobic water is condensed water generated by the steam in the pipeline due to pressure and temperature reduction. Drainage should be discharged in time, otherwise, the drainage not only absorbs the heat of steam in the pipe and influences the flow of the steam, but also can generate water hammer seriously, thereby causing serious consequences. The hydrophobic water can be recovered and processed for continuous use, and the hydrophobic water with higher parameters can be firstly recovered with heat energy and then processed for use as desalted water. At present, the plant area steam systems of the coal-fired power stations mainly comprise two types: one is a steam system for auxiliary equipment of a power station, such as a steam system for production of a heat exchanger steam purging and flue gas treatment system; one is a power station delivery steam system, mainly using industrial steam as main material. With the increasingly strict requirements of the country and the industry on indexes such as energy conservation, water conservation and the like, the demand of efficient recovery of steam drainage in power plant areas is more and more urgent.
Patent CN207122746U discloses a heat exchanger condensed water drainage device, which includes: a steam trap adapted to be disposed downstream of the heat exchanger; the liquid level meter is suitable for displaying the liquid level of the drain tank and generating a liquid level signal; at least one automatic drain branch arranged downstream of the drain tank and having an automatic drain valve for discharging condensed water of the heat exchanger; the drainage ditch is arranged at the downstream of the at least one automatic drainage branch, the controller is electrically connected with the liquid level meter and the automatic drainage valve of the at least one automatic drainage branch and is suitable for controlling the opening and closing of the automatic drainage valve of the at least one automatic drainage branch according to a liquid level signal acquired from the liquid level meter, and when the liquid level signal reaches a threshold value, the controller controls the at least one automatic drainage branch to drain water to the drainage ditch. This application is controlled the trap through the controller according to the drain tank water level, can realize the teletransmission of heat exchanger condensate water level signal, and the operating personnel of being convenient for monitors, has improved the controllability.
Patent CN207486779U discloses a thermal power generation reheat steam transfer pipe's hydrophobic device, the elbow fitting both ends are connected with reheat steam transfer pipe, the upper end intercommunication elbow fitting of drain pan, one side of drain pan is provided with the level gauge, the level gauge passes through the inner chamber intercommunication of connecting tube with the drain pan, be provided with the pipeline telescopic joint on the connecting tube, the opposite side of drain pan is provided with the drain pipe, be provided with the trap on the drain pipe, the drain pan passes through drain pipe intercommunication flash tank, the lower extreme of drain pan is provided with the drain pipe, be provided with the drain valve on the drain pipe. The device makes things convenient for the comdenstion water in the reheat steam pipeline to get into the drain trap, utilizes the characteristic of steam upflow, can effectually prevent that steam from getting into the drain trap, avoids steam leakage, and level gauge real-time supervision drain trap in-tank liquid level information controls opening and close of trap and drain valve through this liquid level information.
However, the prior art hydrophobic recovery of the power plant steam system has two major problems: (1) the drainage pipelines of the steam system in the factory are very dispersed, the water delivery amount is small and discontinuous, and the purpose that the main machine can not be directly recovered by conveying dynamic pressure is not met due to the long conveying distance. (2) If a normal-pressure drain tank (communicated with atmosphere) is adopted for recovering the drained water, the system is not sealed, the water quality is difficult to guarantee, and the drained water needs to be conveyed to a boiler blow-off water tank or a chemical water tank of a power plant through a booster pump, so that the energy consumption is increased, and the grade of the drained water is reduced.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a system for with hydrophobic high-efficient recovery of power station factory steam to host computer condenser hot-well to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a with the hydrophobic high-efficient system of retrieving to host computer condenser hot-well of power station factory steam, include: the steam drainage side comprises a plurality of drainage pipelines, a drainage main pipe and a pressure drainage tank, wherein the drainage pipelines are respectively connected with steam pipelines of a power station plant area, the drainage pipelines are connected in parallel, the input end of the drainage main pipe is respectively connected with the output ends of the drainage pipelines, the tail end of the drainage main pipe is connected with the pressure drainage tank, drainage and saturated steam are stored in a tank body of the pressure drainage tank, a steam chamber is arranged at the upper part of the pressure drainage tank, and the steam chamber is filled with the saturated steam in a running state; the drain recovery side comprises a drain recovery pipeline, the drain recovery pipeline is connected with the pressure drain tank, and drain in the pressure drain tank is connected to a hot well of a host condenser through the drain recovery pipeline; the cooling water side comprises a cooling water pipe and a variable frequency circulating pump, the cooling water pipe is connected with the pressure drain tank, the cooling water realizes a circulation loop of the cooling water in the pressure drain tank through the variable frequency circulating pump, the cooling water quantity is controlled by the variable frequency circulating pump, and a variable frequency control feedback signal of the variable frequency circulating pump is a remote pressure signal on the pressure drain tank; and the controller is respectively and electrically connected with the pressure drain tank, the drain valve group and the variable-frequency circulating pump.
In a preferred embodiment, a pressure gauge is arranged on the tank body of the pressure drain tank, a pressure-stabilizing steam-supplementing interface is arranged in a steam chamber at the upper part of the pressure drain tank, one end of a pressure-stabilizing steam-supplementing pipeline is connected with the pressure-stabilizing steam-supplementing interface, and the other end of the pressure-stabilizing steam-supplementing pipeline is connected with the main machine auxiliary steam system.
In a preferred embodiment, a pressure-stabilizing steam-supplementing regulating valve is arranged on the pressure-stabilizing steam-supplementing pipeline and is electrically connected with the controller.
In a preferred embodiment, a drain valve group is arranged on each drain pipeline, and the drain valve group is electrically connected with the controller.
In a preferred embodiment, be provided with heat exchange coil in the drain trap is pressed in the area, and condenser tube includes cooling water inlet tube and cooling water outlet pipe, and heat exchange coil's one end is connected with the cooling water inlet tube, and heat exchange coil's the other end is connected with the cooling water outlet pipe, is provided with the variable frequency circulating pump on the cooling water inlet tube, and the cooling water is got from host computer cooling tower, and the cooling water is used for maintaining the pressure of pressing the drain trap.
In a preferred embodiment, a safety valve, a thermometer and a liquid level meter are arranged on the tank body of the pressure drainage tank, and the safety valve, the thermometer and the liquid level meter are respectively connected with the controller.
In a preferred embodiment, a high-low water level remote signal control point is arranged on the pressure drain tank and used for controlling the opening and closing of a pipeline from the pressure drain tank to a hot well of a host condenser.
In a preferred embodiment, the drain recovery side further comprises a drain recovery shut-off valve and a throttle valve, the drain recovery shut-off valve and the throttle valve are disposed on the drain recovery pipeline, and both the drain recovery shut-off valve and the throttle valve are electrically connected to the controller.
In a preferred embodiment, the drainage recovery side further comprises a drain pipe, one end of the drain pipe is connected with the bottom of the pressure drainage tank, and the other end of the drain pipe is connected with the drainage ditch.
In a preferred embodiment, the blow-off pipe is further provided with a blow-off valve, and the blow-off valve is electrically connected with the controller.
Compared with the prior art, the utility model discloses a with the hydrophobic high-efficient system of retrieving to host computer condenser hot-well of power station factory steam is: the utility model discloses set up at the end of female pipe of hydrophobic collection and pressed the drain tank, pressed the design pressure value of drain tank and can be calculated according to the pipeline hydrodynamic force of pressing between drain tank and the host computer condenser and reachd, pressed the drain tank and provided sufficient transport power for the drainage is retrieved host computer condenser hot-well. Because the whole system is a closed system, the phenomenon of steam flash evaporation leakage is avoided, the quality of drainage can be ensured, and the aim of high-efficiency recovery is fulfilled. The pressure drain tank is provided with a cooling water system, the cooling water quantity is controlled by a variable frequency circulating pump, and the conveying pressure difference from the drain main pipe to the pressure drain tank is ensured. In addition, a pressure stabilizing steam supplementing pipeline and a safety valve are arranged on the drain tank, so that the stability of the operating pressure of the drain tank with pressure is ensured. The pressure drain tank is also provided with a high-low water level remote transmission signal control point for controlling the opening and closing of a pipeline from the drain tank to the condenser hot well.
Drawings
Fig. 1 is the structural block diagram of the system for efficiently recovering the steam drainage of the power station plant area to the hot well of the host condenser in the preferred embodiment of the invention.
Description of reference numerals:
1-plant steam pipeline of power station; 2-a first hydrophobic line; 3-a second hydrophobic line; 4-other drain lines; 5-a first trap valve group; 6-a second trap valve group; 7-other trap valve group; 8-hydrophobic mother pipe; 9-pressure-stabilizing steam-supplementing regulating valve; 10-a primary auxiliary steam system; 11-a pressure drain tank; 12-a blowdown valve; 13-a sewage draining pipe; 14-a drainage ditch; 15-a hydrophobic recovery shut-off valve; 16-a throttle valve; 17-a host condenser hot well; 18-a hydrophobic recovery line; 19-cooling water inlet pipe; 20-variable frequency circulating pump; 21-heat exchange coil; 22-a main machine cooling tower, 23-a liquid level meter, 24-a safety valve and 25-a controller; 26-a pressure-stabilizing steam-supplementing pipeline; 27-cooling water outlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below. The embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative work, all belong to the protection scope of the present invention.
Example 1:
as shown in fig. 1, the utility model discloses preferred embodiment's the hydrophobic high-efficient system of retrieving to host computer condenser hot-well of power plant factory steam includes: a steam drain side, a drain recovery side, a cooling water side, and a controller 25. Wherein, the steam drain side comprises a plurality of drain lines (as shown in fig. 1, in the present embodiment, the plurality of drain lines comprise a first drain line 2, a second drain line 3, and other drain lines 4), a drain header 8, and a pressurized drain tank 11. Wherein, first drain line 2, second drain line 3, other drain line 4 are connected with power station factory area steam conduit 1 respectively, and parallel connection between first drain line 2, second drain line 3, other drain line 4 is provided with first trap valve group 5, second trap valve group 6 and other trap valve group 7 on first drain line 2, second drain line 3, other drain line 4 respectively. The input end of the main drainage pipe 8 is respectively connected with the output ends of the first drainage pipeline 2, the second drainage pipeline 3 and other drainage pipelines 4, and the tail end of the main drainage pipe 8 is connected with the pressurized drainage tank 11. The tank body with the pressure drain tank 11 is internally provided with drain steam and saturated steam, the upper part of the pressure drain tank 11 is provided with a steam chamber, and the steam chamber is filled with the saturated steam in a running state. The drainage recovery side comprises a drainage recovery pipeline 18, the drainage recovery pipeline 18 is connected with the bottom of the pressure drainage tank 11, and drainage in the pressure drainage tank 11 is connected to the host condenser hot well 17 through the drainage recovery pipeline 18. The cooling water side includes cooling system, and cooling system includes condenser tube and frequency conversion circulating pump 20, and condenser tube is connected with pressure drain tank 11, and the pressure maintenance of pressure drain tank 11 mainly controls through the cooling water. The cooling water realizes the circulation loop of the cooling water in the pressure drain tank 11 through the variable frequency circulating pump 20, the amount of the cooling water is controlled by the variable frequency circulating pump, and the variable frequency control feedback signal of the variable frequency circulating pump 20 is a remote pressure signal on the pressure drain tank 11. The controller 25 is electrically connected with the pressurized drain tank 11, the drain valve group and the variable frequency circulating pump 20 respectively.
In a preferred embodiment, a pressure gauge is disposed on the tank body of the pressure steam trap 11, a pressure-stabilizing steam-supplying interface is disposed in the steam chamber at the upper part of the pressure steam trap, one end of the pressure-stabilizing steam-supplying pipeline 26 is connected with the pressure-stabilizing steam-supplying interface, and the other end of the pressure-stabilizing steam-supplying pipeline 26 is connected with the main auxiliary steam system 10 (main auxiliary steam header). The pressure-stabilizing steam-supplementing pipeline is provided with a pressure-stabilizing steam-supplementing regulating valve 9, and the pressure-stabilizing steam-supplementing regulating valve 9 is electrically connected with the controller 25.
In a preferred embodiment, a heat exchange coil 21 is disposed in the pressurized steam trap 11, the cooling water pipe includes a cooling water inlet pipe 19 and a cooling water outlet pipe 27, one end of the heat exchange coil 21 is connected to the cooling water inlet pipe 19, the other end of the heat exchange coil 21 is connected to the cooling water outlet pipe 27, a variable frequency circulating pump 20 is disposed on the cooling water inlet pipe 19, the cooling water is taken from a host cooling tower 22, and the cooling water is used for maintaining the working pressure of the pressurized steam trap 11.
In a preferred embodiment, a safety valve 24, a thermometer and a liquid level meter 23 are provided on the body of the drain tank 11, and the safety valve 24, the thermometer and the liquid level meter 23 are respectively connected to a controller 25. The pressure drain tank is provided with a high-low water level remote transmission signal control point for controlling the opening and closing of a drain recovery pipeline 18 from the pressure drain tank 11 to a hot well 17 of a host condenser.
Example 2:
in a preferred embodiment, the drain recovery side further includes a drain recovery shut-off valve 15 and a throttle valve 16, the drain recovery shut-off valve 15 and the throttle valve 16 are disposed on the drain recovery line 18, and both the drain recovery shut-off valve 15 and the throttle valve 16 are electrically connected to the controller 25.
In a preferred embodiment, the drainage recovery side further comprises a drainage pipe 13, one end of the drainage pipe 13 is connected with the bottom of the pressurized drainage tank 11, and the other end of the drainage pipe 13 is connected with a drainage ditch 14. The blow-off pipe 13 is also provided with a blow-off valve 12, and the blow-off valve 12 is electrically connected with the controller 25. When the maintenance sewage drainage is carried out, the sewage is drained into a drainage ditch 14 through a sewage drainage pipe 13, and the control is completed by a sewage drainage valve 12.
Example 3:
the utility model discloses a with the hydrophobic high-efficient hydrophobic control process of retrieving the system to host computer condenser hot-well of power plant factory steam includes following step: the controller 25 is adopted to control the opening of the drain valve group, and drain generated by the steam pipeline 1 of the power station plant area is introduced into the drain main pipe 8 through a plurality of drain pipelines; the drainage in the drainage main pipe 8 flows into the pressure drainage tank 11 under the action of the pressure difference between the steam drainage side and the pressure drainage tank 11; cooling the pressure drain tank 11 by cooling water in a cooling water pipe to maintain the saturation pressure in the pressure drain tank, wherein the cooling water enters the pressure drain tank 11 through a variable frequency circulating pump 20; based on the pressure signal feedback on the pressure drain tank 11, the controller 25 controls the circulation amount of the cooling water through the variable frequency circulating pump 20; the drainage in the pressure drainage tank 11 is connected to a host condenser hot well 17 through a drainage recovery pipeline 18. The controller 25 is a PLC controller, and the control operation of the whole system is completed by the PLC controller.
In a preferred embodiment, the method further comprises the following steps: based on the signal feedback of a high-low water level remote transmission signal control point arranged on the pressure drain tank 11, the opening and closing of a drain recovery pipeline 18 are controlled through a drain recovery shutoff valve 15, and the drain flow is adjusted through a throttle valve 16. In the normal state, the drain recovery shut-off valve 15 on the drain recovery pipeline 18 is in an open state, and when the liquid level in the pressurized drain tank 11 is lower than the minimum protection water level, the drain recovery shut-off valve 15 is changed from the open state to a closed state. When the steam drainage is too little and the environmental heat dissipation loss causes that the pressure of the pressure drain tank 11 is lower than the working pressure, the variable frequency circulating pump 20 stops working, the pressure stabilizing and steam supplementing regulating valve 9 is opened, steam is supplemented through a pressure stabilizing and steam supplementing interface arranged in a steam chamber at the upper part of the pressure drain tank 11, and the opening signal of the pressure stabilizing and steam supplementing regulating valve 9 is fed back by the pressure signal on the pressure drain tank 11 until the pressure of the pressure drain tank 11 reaches a stable control value.
In a preferred embodiment, when service drain is required, it is drained through drain 13 to drain 14 and controlled by drain valve 12.
The utility model discloses a totally airtight and the automatic operation of the hydrophobic recovery process of power plant steam conduit when guaranteeing to retrieve quality of water, has reduced the cost of operation maintenance again to the purpose of high-efficient recovery has been reached.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a with hydrophobic high-efficient system of retrieving to host computer condenser hot-well of power plant factory steam which characterized in that: the system for efficiently recovering the steam drainage of the power station plant area to the hot well of the host condenser comprises:
the steam drainage side comprises a plurality of drainage pipelines, a drainage main pipe and a pressure drainage tank, wherein the drainage pipelines are respectively connected with steam pipelines of a power station plant area, the drainage pipelines are connected in parallel, the input end of the drainage main pipe is respectively connected with the output ends of the drainage pipelines, the tail end of the drainage main pipe is connected with the pressure drainage tank, drainage and saturated steam are stored in a tank body of the pressure drainage tank, a steam chamber is arranged at the upper part of the pressure drainage tank, and the steam chamber is filled with the saturated steam in a running state;
the drainage recovery side comprises a drainage recovery pipeline, the drainage recovery pipeline is connected with the pressure drainage tank, and drainage in the pressure drainage tank is connected to a hot well of a host condenser through the drainage recovery pipeline;
the cooling water side comprises a cooling water pipe and a variable frequency circulating pump, the cooling water pipe is connected with the pressure drain tank, the cooling water realizes a circulation loop of the cooling water in the pressure drain tank through the variable frequency circulating pump, the cooling water quantity is controlled by the variable frequency circulating pump, and a variable frequency control feedback signal of the variable frequency circulating pump is a remote pressure signal on the pressure drain tank; and
and the controller is respectively and electrically connected with the pressure drain tank and the variable-frequency circulating pump.
2. The system for efficiently recycling the steam of the power plant area to the hot well of the host condenser according to the claim 1, characterized in that: the pressure-stabilizing steam supplementing device is characterized in that a pressure gauge is arranged on the tank body of the pressure drain tank, a pressure-stabilizing steam supplementing interface is arranged in a steam chamber on the upper portion of the pressure drain tank, one end of a pressure-stabilizing steam supplementing pipeline is connected with the pressure-stabilizing steam supplementing interface, and the other end of the pressure-stabilizing steam supplementing pipeline is connected with the main machine auxiliary steam system.
3. The system for efficiently recycling the steam of the power plant area to the hot well of the host condenser according to the claim 2, characterized in that: and the pressure-stabilizing steam-supplementing pipeline is provided with a pressure-stabilizing steam-supplementing regulating valve which is electrically connected with the controller.
4. The system for efficiently recycling the steam of the power plant area to the hot well of the host condenser according to the claim 1, characterized in that: and each drain pipeline is respectively provided with a drain valve group, and the drain valve groups are electrically connected with the controller.
5. The system for efficiently recycling the steam of the power plant area to the hot well of the host condenser according to the claim 3, characterized in that: be provided with heat exchange coil in the drain tank of area, condenser tube includes cooling water inlet tube and cooling water outlet pipe, heat exchange coil's one end is connected with the cooling water inlet tube, heat exchange coil's the other end is connected with the cooling water outlet pipe, be provided with on the cooling water inlet tube the variable frequency circulating pump, the cooling water is got from host computer cooling tower, the cooling water is used for maintaining the pressure of drain tank is pressed in the area.
6. The system for efficiently recycling the steam of the power plant area to the hot well of the host condenser according to the claim 3, characterized in that: and a safety valve, a thermometer and a liquid level meter are arranged on the tank body of the pressure drain tank, and the safety valve, the thermometer and the liquid level meter are respectively connected with the controller.
7. The system for efficiently recycling the steam of the power plant area to the hot well of the host condenser according to the claim 6, characterized in that: and a high-low water level remote transmission signal control point is arranged on the pressure drain tank and is used for controlling the opening and closing of a pipeline from the pressure drain tank to the hot well of the host condenser.
8. The system for efficiently recycling the steam of the power plant area to the hot well of the host condenser according to the claim 1, characterized in that: the drain recovery side further comprises a drain recovery shut-off valve and a throttle valve, the drain recovery shut-off valve and the throttle valve are arranged on the drain recovery pipeline, and the drain recovery shut-off valve and the throttle valve are electrically connected with the controller.
9. The system for efficiently recycling the steam of the power plant area to the hot well of the host condenser according to claim 8, characterized in that: the drain recovery side also comprises a drain pipe, one end of the drain pipe is connected with the bottom of the pressure drain tank, and the other end of the drain pipe is connected with a drain ditch.
10. The system for efficiently recycling the steam of the power plant area to the hot well of the host condenser according to the claim 9, characterized in that: and a drain valve is also arranged on the drain pipe and is electrically connected with the controller.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022664157.8U CN213542043U (en) | 2020-11-17 | 2020-11-17 | System for efficiently recycling steam drainage of power station plant area to hot well of host condenser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022664157.8U CN213542043U (en) | 2020-11-17 | 2020-11-17 | System for efficiently recycling steam drainage of power station plant area to hot well of host condenser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352923A (en) * | 2022-01-18 | 2022-04-15 | 东方菱日锅炉有限公司 | Automatic drainage system for high-temperature high-pressure steam pipeline |
-
2020
- 2020-11-17 CN CN202022664157.8U patent/CN213542043U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352923A (en) * | 2022-01-18 | 2022-04-15 | 东方菱日锅炉有限公司 | Automatic drainage system for high-temperature high-pressure steam pipeline |
| CN114352923B (en) * | 2022-01-18 | 2024-01-09 | 东方菱日锅炉有限公司 | Automatic drainage system for high-temperature high-pressure steam pipeline |
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