CN206739627U - More condenser boiler water supply systems - Google Patents
More condenser boiler water supply systems Download PDFInfo
- Publication number
- CN206739627U CN206739627U CN201720406203.XU CN201720406203U CN206739627U CN 206739627 U CN206739627 U CN 206739627U CN 201720406203 U CN201720406203 U CN 201720406203U CN 206739627 U CN206739627 U CN 206739627U
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- pipe
- return
- oxygen
- boiler
- eliminating device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model has separated a kind of more condenser boiler water supply systems, including multiple boilers, oxygen-eliminating device and softened water tank, softened water tank exit connection feed pipe, and feed pipe connects each boiler by water supply branch pipe；The feed pipe connects return pipe, and return pipe connects oxygen-eliminating device, return pipe connection softened water tank porch by return branch；Also include two level water inlet pipe, two level water inlet pipe connection return pipe, two level water inlet pipe connects each boiler by water inlet pipe, inlet regulating valve is equipped with each water inlet pipe；The return pipe is provided with bypass regulator valve, positioned at the junction of feed pipe and return pipe；The return pipe is provided with return valve, between oxygen-eliminating device and softened water tank；The return branch of the oxygen-eliminating device connection is provided with oxygen-eliminating device inlet regulating valve.The utility model can realize the recycling on demand of the water balance and fume afterheat of more condenser boiler water supply systems, and ensure the high thermal efficiency of boiler operatiopn.
Description
Technical field
Condenser boiler system is the utility model is related to, more particularly to more condenser boiler water supply systems.
Background technology
Condenser boiler more using efficient smoke condensing waste heat recovering device come the sensible heat and latent heat in recovered flue gas, with
Reach the purpose for improving boiler thermal output.More condenser boiler water supply systems are mainly by boiler, feed pump, oxygen-eliminating device, soft water
Case is formed.The water balance and effective supply problem of the water supply system of more condenser boiler compositions can influence the operation of boiler
Operating mode.Need to realize water supply system in one or more boiler operatiopn and automatically control, should fully ensure that active boiler is cold
The inflow of solidifying formula energy-saving appliance, makes the water vapour in flue gas effectively condense, ensures the high thermal efficiency of boiler operatiopn；Also ensure simultaneously
Boiler feed ordinary water level, cause boiler shutdown to prevent oxygen-eliminating device water shortage, influence enterprise's production.
The content of the invention
The purpose of this utility model is to solve the above problems, there is provided it is a kind of to realize the water balance of water supply system, and make
The maximized more condenser boiler water supply systems of flue gas waste heat recovery efficiency.
Therefore, the technical solution of the utility model is：More condenser boiler water supply systems, including multiple boilers, deoxygenation
Device and softened water tank, softened water tank exit connection feed pipe, feed pipe connect each boiler by water supply branch pipe；The feed pipe connects
Water pipe is taken back, return pipe connects oxygen-eliminating device, return pipe connection softened water tank porch by return branch；It is characterized in that：Also wrap
Two level water inlet pipe, two level water inlet pipe connection return pipe are included, two level water inlet pipe connects each boiler, each water inlet by water inlet pipe
Inlet regulating valve is equipped with branch pipe；The return pipe is provided with bypass regulator valve, positioned at the junction of feed pipe and return pipe；
The return pipe is provided with return valve, between oxygen-eliminating device and softened water tank；In the return branch of the oxygen-eliminating device connection
Provided with oxygen-eliminating device inlet regulating valve.
During utility model works, when temperature is higher after flue gas heat exchange in boiler, increase the aperture of inlet regulating valve, increase
Add the inflow of water inlet pipe；When temperature is relatively low after flue gas heat exchange in boiler, reduce the aperture of inlet regulating valve, it is ensured that boiler
Heat exchange efficiency.When the instantaneous water after boiler heat exchange is less than the instantaneous water requirement of oxygen-eliminating device, bypass regulator valve one must be opened
Determine aperture（I.e. bypass regulator valve rotates to an angle）, to compensate both differences, meet the normal water requirement of oxygen-eliminating device.Work as pot
When instantaneous water after stove heat exchange is more than oxygen-eliminating device instantaneous water requirement, the certain aperture of return valve must be opened, unnecessary is changed
Soft water after heat is back to softened water tank, to improve the heat exchange efficiency of boiler to greatest extent, as much as possible in recovered flue gas
Sensible heat and latent heat.
The utility model is by increasing bypass regulator valve, return valve, inlet regulating valve these control valves, to these
Controlled quentity controlled variable carries out automating real-time control, so as to realize the water balance of more condenser boiler water supply systems and fume afterheat
Recycle on demand, and ensure the high thermal efficiency of boiler operatiopn.
Brief description of the drawings
It is described in further detail below in conjunction with accompanying drawing and embodiment of the present utility model
Fig. 1, Fig. 2 are structure connection figure of the present utility model.
In figure mark for：Boiler 1, oxygen-eliminating device 2, softened water tank 3, feed pipe 4, water supply branch pipe 41, return pipe 5, return branch
51st, two level water inlet pipe 6, water inlet pipe 61, inlet regulating valve 7, bypass regulator valve 8, return valve 9, oxygen-eliminating device water inlet regulation
Valve 10.
Embodiment
Referring to accompanying drawing.The present embodiment includes 5 boilers 1, oxygen-eliminating device 2 and softened water tank 3, softened water tank exit connection feed pipe
4, feed pipe separates multichannel water supply branch pipe 41 and connects each boiler 1, the end of feed pipe 4 connection return pipe 5, return pipe connection soft water
The porch of case 3, return pipe separate multichannel return branch 51 and connect oxygen-eliminating device 2；Meanwhile return pipe is also connected with two level water inlet pipe 6, two
Level water inlet pipe be arranged in parallel with feed pipe, and two level water inlet pipe separates multichannel water inlet pipe 61 and connects each boiler, water inlet pipe 61
Inlet regulating valve 7 is provided with, inlet regulating valve controls the inflow of the secondary heat exchange of boiler 1；The return pipe 5 is provided with bypass and adjusted
Valve 8 is saved, controls the connection situation of feed pipe and return pipe, or the water in pipeline；The return pipe is provided with backflow and adjusted
Valve 9, between oxygen-eliminating device and softened water tank；The return branch 51 that the oxygen-eliminating device 2 connects is provided with oxygen-eliminating device inlet regulating valve
10。
When the present embodiment works, when temperature is higher after flue gas heat exchange in boiler 1, increase the aperture of inlet regulating valve 7, increase
Add the inflow of water inlet pipe；When temperature is relatively low after flue gas heat exchange in boiler 1, reduce the aperture of inlet regulating valve 7, it is ensured that pot
The heat exchange efficiency of stove.Flue-gas temperature directly controls after the aperture of inlet regulating valve 7 is exchanged heat by each boiler 1, can be by independent
Temperature PID control mode is realized.
When the instantaneous water after the heat exchange of boiler 1 is less than the instantaneous water requirement of oxygen-eliminating device 2, bypass regulator valve 8 one must be opened
Determine aperture（I.e. bypass regulator valve rotates to an angle）, to compensate both differences, meet the normal water requirement of oxygen-eliminating device 2.When
When instantaneous water after the heat exchange of boiler 1 is more than 2 instantaneous water requirement of oxygen-eliminating device, 9 certain aperture of return valve must be opened, will be unnecessary
Heat exchange after soft water be back to softened water tank 3, to improve the heat exchange efficiency of boiler 1 to greatest extent, reclaim cigarette as much as possible
Sensible heat and latent heat in gas.
The control thinking of the two controlled quentity controlled variables of bypass regulator valve and return valve is as follows in the present embodiment：
First, bypass regulator valve and return valve flow are calculated, is calculated below in ideal circumstances（Ignore pipeline pressure
Damage, valve opening and flow linear relationship are good）Carry out：
Oxygen-eliminating device flow of inlet water is set as Qc, the flow of inlet water of 5 boilers is respectively Qb1 ~ Qb5, bypass regulator valve flow
For Qp, return valve flow is Qh, and flow corresponding to return valve minimum aperture is Qhmin；
When water-carrying capacity needed for boiler heat exchange is more than actual oxygen-eliminating device water requirement：
Qb1+Qb2+Qb3+Qb4+Qb5-Qc-Qhmin≥0
The certain aperture of return valve must be now opened, the soft water after unnecessary heat exchange is back to softened water tank, it is now other
Logical regulating valve flow is closed mode, i.e. Qp=0, so return valve flow Qh=Qb1+Qb2+Qb3+Qb4+Qb5-Qc；
When water-carrying capacity needed for boiler heat exchange is less than actual oxygen-eliminating device water requirement：
Qb1+Qb2+Qb3+Qb4+Qb5-Qc-Qhmin<0
The certain aperture of bypass regulator valve must be now opened, to compensate both differences, meets the normal water requirement of oxygen-eliminating device；
The now flow Qh of return valve=flow Qhmin corresponding to minimum aperture；
So flow Qp=Qc-Qb1-Qb2-Qb3-Qb4-Qb5-Qhmin of bypass regulator valve.
When knowing required uninterrupted, it is necessary to according to pressure difference and pipeline caliber conversion bypass regulator valve and return valve
Opening degree command value, control valve aperture, wherein each valve opening and the reduction formula of flow are as follows：
Aperture is set as x, constant pressure water supply system pressure of supply water is 0.3MPa, then
As x≤50%,
The π r2arccos of flow Q=9540s=53（1-2x）-19080r²（1-2x）
As x ＞ 50%,
Flow Q=π r2+19080r2（2x-1）
The flow Qh of return valve and the flow Qp of bypass regulator valve can calculate opening value x by above-mentioned formula.
Claims (1)
1. more than condenser boiler water supply system, including multiple boilers, oxygen-eliminating device and softened water tank, the connection of softened water tank exit are supplied water
Pipe, feed pipe connect each boiler by water supply branch pipe；The feed pipe connects return pipe, and return pipe is connected by return branch
Oxygen-eliminating device, return pipe connection softened water tank porch；It is characterized in that：Also include two level water inlet pipe, two level water inlet pipe connection backwater
Pipe, two level water inlet pipe connect each boiler by water inlet pipe, inlet regulating valve are equipped with each water inlet pipe；The backwater
Pipe is provided with bypass regulator valve, positioned at the junction of feed pipe and return pipe；The return pipe is provided with return valve, is located at
Between oxygen-eliminating device and softened water tank；The return branch of the oxygen-eliminating device connection is provided with oxygen-eliminating device inlet regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720406203.XU CN206739627U (en) | 2017-04-18 | 2017-04-18 | More condenser boiler water supply systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720406203.XU CN206739627U (en) | 2017-04-18 | 2017-04-18 | More condenser boiler water supply systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206739627U true CN206739627U (en) | 2017-12-12 |
Family
ID=60561345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720406203.XU Active CN206739627U (en) | 2017-04-18 | 2017-04-18 | More condenser boiler water supply systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206739627U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264073A (en) * | 2021-12-29 | 2022-04-01 | 北京华源泰盟节能设备有限公司 | Preheating system with multiple parallel boilers and control method thereof |
-
2017
- 2017-04-18 CN CN201720406203.XU patent/CN206739627U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264073A (en) * | 2021-12-29 | 2022-04-01 | 北京华源泰盟节能设备有限公司 | Preheating system with multiple parallel boilers and control method thereof |
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