CN208702473U - Closed-up water back heating system - Google Patents
Closed-up water back heating system Download PDFInfo
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- CN208702473U CN208702473U CN201821518054.7U CN201821518054U CN208702473U CN 208702473 U CN208702473 U CN 208702473U CN 201821518054 U CN201821518054 U CN 201821518054U CN 208702473 U CN208702473 U CN 208702473U
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- water
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- heater
- heating system
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Abstract
The utility model is a kind of closed-up water back heating system, at least one enclosed water heater and closed-up water plate heat exchanger are passed sequentially through on closed water line, it also include condensate line and circulating water line, condensate line carries out heat exchange by enclosed water heater, the circulating water line 3 carries out heat exchange by closed-up water plate heat exchanger, the closed-up water back heating system of the utility model, particularly suitable for wet type cooling unit, the heat exchange of closed water system and condensate system may be implemented, recycle the heat of closed water system, realize the utilization to closed-up water waste heat, improve the thermal efficiency of unit.Low-pressure heater can be reduced from turbine low pressure cylinder steam extraction, to increase generated output.Closed-up water can be made to be cooled down simultaneously, reduce plate heat exchanger and recycle water consumption, and equipment involved in system is mature equipment, technical risk is small.
Description
Technical field
The utility model relates to a kind of novel therrmodynamic systems using closed-up water heat condensed water, are suitable for clammy
Thermal power generation unit.
Background technique
The running temperature of thermal power plant closed water system about supplies water 35 DEG C or so, and highest is not higher than 38 DEG C, return water temperature
Spending general lift-off value is 8 ~ 10 DEG C, generally 43 ~ 48.
Currently, thermal power plant wet type cooling unit operates normally back pressure of condenser value 4.7KPa or so, corresponding saturation temperature is about
It is 31.8 DEG C, coastal northern area back pressure can accomplish lower, and the back pressure value of present recent development unit has reached
It is 25.2 DEG C that 3.2KPa, which corresponds to saturation temperature,.The technology trends are just to heat to create to condensed water using closed water system heat
Condition is made.
Utility model content
The technical issues of the utility model is solved is providing a kind of closed-up water back heating system, and enclosed may be implemented
The heat of closed water system is recycled in the heat exchange of water system and condensate system, realizes the utilization to closed-up water waste heat, improves unit
The thermal efficiency.Low-pressure heater can be reduced from turbine low pressure cylinder steam extraction, to increase generated output.It can make enclosed simultaneously
Water is cooled down, and is reduced plate heat exchanger and is recycled water consumption.
Technological means used by the utility model is as described below.
A kind of closed-up water back heating system passes sequentially through at least one enclosed water heater and is closed on closed water line
Formula water plate heat exchanger, also include condensate line and circulating water line, the condensate line by enclosed water heater into
The exchange of row heat, the circulating water line carry out heat exchange by closed-up water plate heat exchanger.
It further, include 2 enclosed water heaters being arranged in parallel, the condensed water in closed-up water back heating system
Pipeline setting passes through the exchange branch of 2 enclosed water heaters respectively.
Further, the position of the exchange branch is after condensed water precision treatment device, before gland heater, and coagulates
It bears water setting between accurate process equipment and gland heater and is connected to branch, the exchange branch entrance, outlet and connected component road
It is respectively provided with shut-off valve.
Further, the circulating water pipe road setting flow control valve.
It is had the beneficial effect that caused by the utility model.
1, waste heat of the heat source from closed water system can be improved the efficiency of therrmodynamic system, reduce heat consumption.
2, in the system of the utility model, closed-up water heating heat exchanger number of units is >=1, should for conventional coal unit
Heat exchanger is two Parallel Designs, and condensed water exchanges heat more efficient with closed-up water.
3, in the system of the utility model, closed water system one platen type heat exchanger of series connection, for guaranteeing that closed-up water supplies water
Temperature meets unit requirement.
4, the system of the utility model can reduce the circulating cooling water consumption by closed-up water plate heat exchanger, favorably
It is energy-saving in recirculated water side, while reducing pollution of the waste heat to environment.The design of circulating water pipe road has regulating valve for adjusting
Quantity of circulating water.
5, the system structure of the utility model is simple, and plant capacity consumption is few.Heat exchange equipment technology maturation used in system, skill
Art risk is small.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The utility model protects a kind of closed-up water back heating system, comprising closed water line 1, condensate line 2 and follows
Ring water lines 3.
At least one enclosed water heater and closed-up water plate heat exchanger 2 are passed sequentially through on closed water line 1, such as Fig. 1 institute
The embodiment shown includes 2 enclosed water heaters 11,12 in parallel.
Condensate line 2 carries out heat exchange, embodiment as shown in the figure, condensate line 2 by enclosed water heater
The exchange branch 21 for passing through 2 enclosed water heaters 11,12 respectively is set.
The entrance of condensate line 2 is connected to condenser 27, and defeated to condensed water precision treatment device 23 by condensate pump 28
Send condensed water.Above-mentioned exchange branch 21 is arranged after condensed water precision treatment device 23, before gland heater 24.Condensed water is inhaled
After the heat for receiving closed-up water, deaerator storage tank 26 is entered after gland heater 24 and low-pressure heater 25.As shown,
Setting is connected to branch 22, the entrance of the exchange branch 21, outlet between condensed water precision treatment device 23 and gland heater 24
It is respectively provided with shut-off valve on the road 22 being connected to, in the case of 11,12 operation troubles of enclosed water heater, cuts out condensation water system
System.
Circulating water line 3 carries out heat exchange by closed-up water plate heat exchanger 13, and recirculated water exchanges heat to by condensed water
The heat that closed-up water afterwards carries is reabsorbed.The design of circulating water pipe road has flow control valve 31 for adjusting recirculated water
Amount, to control closed-up water water supply water temperature.
The closed-up water back heating system of the utility model passes through enclosed using the waste heat of closed water system as heat source
Water heater heats condensed water, so that condensed water is heated, closed-up water is cooled down.Condensed water is heated
Afterwards, it is possible to reduce upper level low-pressure heater low pressure (LP) cylinder steam extraction amount, thus multiple electricity.
Closed-up water is cooled down, so that recirculated water (industrial colling) system power output be made to reduce, reduces energy consumption, and reduce
Recycle water consumption.The system enclosed water heater is arranged at least 1, is specifically determined according to the flow of closed-up water and condensed water, right
In traditional coal unit, which is preferably that closed-up water side is two in parallel.
The closed-up water bleeder heater system of the utility model, on the one hand solves the problems, such as the cooling of closed-up water, another party
Face solves condensed water heating problems.The thermal efficiency of therrmodynamic system is improved, turbine heat rate is reduced, meaning is obvious.This is practical new
The system of type is particularly suitable for wet type cooling unit, and equipment involved in system is mature equipment, and technical risk is small.
Claims (4)
1. a kind of closed-up water back heating system, which is characterized in that pass sequentially through at least one enclosed on closed water line (1)
Water heater and closed-up water plate heat exchanger (13) also include condensate line (2) and circulating water line (3), the condensed water
Pipeline (2) carries out heat exchange by enclosed water heater, and the circulating water line (3) passes through closed-up water plate heat exchanger (13)
Carry out heat exchange.
2. closed-up water back heating system as described in claim 1, which is characterized in that the closed-up water being arranged in parallel comprising 2
Heater (11,12), the condensate line setting pass through the exchange branch of 2 enclosed water heaters (11,12) respectively
(21).
3. closed-up water back heating system as claimed in claim 2, which is characterized in that the position of exchange branch (21) exists
After condensed water precision treatment device (23), before gland heater (24), and condensed water precision treatment device (23) and axle envelope heat
Setting connection branch (22) between device (24), exchange branch (21) entrance, outlet are respectively provided with pass with being connected on branch (22)
Disconnected valve.
4. the closed-up water back heating system as described in claims 1 to 3 is any, which is characterized in that the circulating water line (3)
Upper setting flow control valve (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821518054.7U CN208702473U (en) | 2018-09-17 | 2018-09-17 | Closed-up water back heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821518054.7U CN208702473U (en) | 2018-09-17 | 2018-09-17 | Closed-up water back heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208702473U true CN208702473U (en) | 2019-04-05 |
Family
ID=65947337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821518054.7U Active CN208702473U (en) | 2018-09-17 | 2018-09-17 | Closed-up water back heating system |
Country Status (1)
| Country | Link |
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| CN (1) | CN208702473U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114538661A (en) * | 2022-02-28 | 2022-05-27 | 西安热工研究院有限公司 | System and method for water quality treatment and waste heat utilization of closed water system of power plant |
-
2018
- 2018-09-17 CN CN201821518054.7U patent/CN208702473U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114538661A (en) * | 2022-02-28 | 2022-05-27 | 西安热工研究院有限公司 | System and method for water quality treatment and waste heat utilization of closed water system of power plant |
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