CN207647626U - A kind of cycle bypath system for performance heater - Google Patents
A kind of cycle bypath system for performance heater Download PDFInfo
- Publication number
- CN207647626U CN207647626U CN201721531349.3U CN201721531349U CN207647626U CN 207647626 U CN207647626 U CN 207647626U CN 201721531349 U CN201721531349 U CN 201721531349U CN 207647626 U CN207647626 U CN 207647626U
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- cycle
- performance heater
- control valve
- hot water
- heater
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Abstract
The utility model is related to a kind of cycle bypath systems for performance heater.The system includes one realizing the water temperature cycle bypath system that gradually rises or reduce in performance heater in the start and stop stage, it includes isolating valve I, main inlet control valve, circulating pump, control valve and isolating valve II to recycle bypath system, and main inlet control valve is set to hot water exit.Gas turbine start and stop stage, performance heater are bypassed by circulating pump and carry out water cycle, and gradually rising either to reduce and avoiding shock heating or quenching process for temperature may be implemented, and can be significantly reduced caused by temperature sealing and be leaked or be seal failure leakage.
Description
Technical field
The utility model belongs to heated by natural gas system regions, and in particular to a kind of water side for performance heater is followed
Ring bypath system.
Background technology
Performance heater is the important equipment of fuel gas disposal needed for the heavy duty gas turbine of plant gas, utilizes waste heat pot
Heated by natural gas to design value is ensured the working efficiency of gas turbine by the medium-pressure boiler hot water of stove.
In the gas turbine start and stop stage, gas discharge very little, required hot water flow is also small, the high-temperature-hot-water that medium-pressure boiler comes
Easily cause that temperature distribution is non-uniform in heat exchanger, simultaneously because gas turbine start and stop are frequent, performance heat exchanger hot and cold alternation,
It is easy to cause the leakage of exchanger tubes and tubesheets weld or causes the seal failure of tube sheet flange connections and leak.
General design, heater are full of water by the valve exhaust mounted on top, and water outlet line is equipped with control valve,
Hot water flow is adjusted according to gas outlet temperature.But the start and stop stage cannot be solved due to larger heat punching caused by high-temperature-hot-water
It hits.
Invention content
Technical problem to be solved in the utility model is：Larger heat punching caused by performance heater start and stop stage hot water
It hits so that thus heat exchanger leaks.
Technical solution used by solve its technical problem the utility model be provide it is a kind of be used for performance heater
Bypath system is recycled, performance heater A and B be installed in series, which further includes one realizing that performance adds in the start and stop stage
The cycle bypath system that water temperature gradually rises or reduces in hot device, hot water outlet of the cycle bypath system from performance heater B
It is sequentially connected with isolating valve I, circulating pump, control valve and isolating valve II on to hot water inlet's pipeline of performance heater A；Performance adds
There are one main inlet control valves for the hot water outlet pipe road also parallel connection of hot device B.
Further, the filter of solid particle in drainage, filter setting were additionally provided in recycling bypath system
In the upstream of circulating pump and control valve.
Further, being additionally provided in recycling bypath system prevents hot water from flowing directly into stopping for hot water outlet by bypass
Return valve.
The gas turbine start and stop stage, performance heater by circulating pump bypass carry out water cycle, may be implemented temperature by
High either reduce that edge up avoids shock heating or quenching process, can significantly reduce the sealing caused by temperature and leak or be
Seal failure leaks.
Description of the drawings
Fig. 1 is the system schematic of the utility model.
Wherein：1, performance heater B, 2, isolating valve I, 3, main inlet control valve, 4, filter, 5, circulating pump, 6, control valve,
7, check-valves, 8, isolating valve II, 9, performance heater A.
Specific implementation mode
The utility model is described further below in conjunction with attached drawing and specific embodiment.
Fig. 1 is a kind of cycle bypath system schematic diagram for performance heater of the utility model.Performance heater A9 and
B1 is installed in series, the system further include one to the start and stop stage realize performance heater in water temperature gradually rise or reduce
Bypath system is recycled, the hot water inlet of the cycle bypath system from hot water outlet to the performance heater A9 of performance heater B1 manage
Road has been sequentially connected with isolating valve I 2, circulating pump 5, control valve 6 and isolating valve II 8；The hot water export pipeline of performance heater B1
Upper also in parallel there are one main inlet control valve 3, main inlet control valve 3 adjusts the flow of hot water in normal operation to control gas outlet temperature
Degree.
The maximum stream flow of circulating pump is about combustion engine start and stop stage corresponding heater minimum water flow.When normal operation,
Circulating pump is to shut down stand-by state.
Gas turbine startup stage：Main inlet control valve 3 is closed, and isolating valve I 2 and II 8 is opened, and circulating pump 5 starts,
Hot water returns to hot water inlet after control valve 6 adjusts pressure, again passes through performance heater A9 and B1 and is recycled about 3-5 minutes,
It is equivalent to and performance heater A9 and B1 slowly heats up.When combustion engine starts to use gas, main inlet control valve 3 gradually starts to adjust, this
When control valve 6 progressively close off.After the flow of main inlet control valve 3 reaches heater minimum water flow, hot water is controlled by main inlet control valve 3
System, circulating pump 5 are shut down, and control valve 6 is closed.
Gas turbine shutdown phase：When hot water flow gradually decreases to heater minimum water flow, circulating pump 5 is opened, main
Regulating valve 3 progressively closes off, and control valve 6 is gradually opened, that is, is started the cycle over.After main inlet control valve 3 is closed, circulating pump 5 is also wanted
It is run 3-5 minutes under the maximum stream flow of pump, the temperature of performance heater A9 and B1 is made to continuously decrease.
When circulating pump 5 needs maintenance, can be realized and isolation of system by closing isolating valve I 2 and II 8.
Filter 4 can cross solid particle in drainage, the control valve 6 of protection pump and downstream.
When circulating pump 5 is shut down, check-valves 7 can prevent hot water from flowing directly into hot water outlet by this bypass.
The gas turbine start and stop stage, performance heater by circulating pump bypass carry out water cycle, may be implemented temperature by
High either reduce that edge up avoids shock heating or quenching process, can significantly reduce the sealing caused by temperature and leak or be
Seal failure leaks.
Claims (3)
1. a kind of cycle bypath system for performance heater, performance heater A（9）With performance heater B（1）Series connection peace
Dress, which is characterized in that the system further includes one realizing that water temperature gradually rises or drops in performance heater in the start and stop stage
Low cycle bypath system, the cycle bypath system is from performance heater B（1）Hot water outlet to performance heater A（9）Heat
Isolating valve I has been sequentially connected on water inlet pipeline（2）, circulating pump（5）, control valve（6）And isolating valve II（8）；Performance heater B
（1）Also in parallel there are one main inlet control valves for hot water outlet pipe road（3）.
2. a kind of cycle bypath system for performance heater as described in claim 1, which is characterized in that bypassed in cycle
The filter of solid particle in drainage was additionally provided in system（4）, filter（4）It is arranged in circulating pump（5）And control valve
（6）Upstream.
3. a kind of cycle bypath system for performance heater as claimed in claim 2, which is characterized in that bypassed in cycle
The check-valves for preventing hot water from flowing directly into hot water outlet by bypass is additionally provided in system（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721531349.3U CN207647626U (en) | 2017-11-16 | 2017-11-16 | A kind of cycle bypath system for performance heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721531349.3U CN207647626U (en) | 2017-11-16 | 2017-11-16 | A kind of cycle bypath system for performance heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207647626U true CN207647626U (en) | 2018-07-24 |
Family
ID=62889975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721531349.3U Active CN207647626U (en) | 2017-11-16 | 2017-11-16 | A kind of cycle bypath system for performance heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207647626U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829832A (en) * | 2017-11-16 | 2018-03-23 | 大连派思燃气系统股份有限公司 | Circulation bypath system for performance heater |
-
2017
- 2017-11-16 CN CN201721531349.3U patent/CN207647626U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829832A (en) * | 2017-11-16 | 2018-03-23 | 大连派思燃气系统股份有限公司 | Circulation bypath system for performance heater |
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