CN209355223U - A kind of conjunction pumping system for Combined Cycle Heat Recovery Boiler - Google Patents
A kind of conjunction pumping system for Combined Cycle Heat Recovery Boiler Download PDFInfo
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- CN209355223U CN209355223U CN201822131486.9U CN201822131486U CN209355223U CN 209355223 U CN209355223 U CN 209355223U CN 201822131486 U CN201822131486 U CN 201822131486U CN 209355223 U CN209355223 U CN 209355223U
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Abstract
The utility model provides a kind of conjunction pumping system for Combined Cycle Heat Recovery Boiler, belongs to the pumping system field of waste heat boiler.Two conjunction pumps of the utility model, which use, to be connected in parallel, the entrance that low-pressure drum closes pump with two is connect by pipeline, two outlet conduits for closing pump are connected to high-pressure economizer and connect with high-pressure system feed-water intake, two level-one taps closed at pump discharge are connected to low-pressure coal saver by pipeline and connect with low-pressure coal saver recycling water inlet, and two two pole taps closed at pump discharges are connected to middle pressure economizer by pipeline and connect with medium voltage network feed-water intake.A kind of conjunction pumping system for Combined Cycle Heat Recovery Boiler of the utility model, greatly reduce the quantity of afterheat boiler system pump, 2 are reduced to by original 6, pump area's occupied area 60% is reduced, auxiliary steel construction cost is reduced, simplifies pipe arrangement, operation is facilitated to overhaul, the quantity of monitoring point can be reduced simultaneously, simplifies operational monitoring data, reduce scene operation workload.
Description
Technical field
The utility model relates to a kind of conjunction pumping systems for Combined Cycle Heat Recovery Boiler, belong to the pumping system of waste heat boiler
Field.
Background technique
Waste heat boiler has double pressures or three pressure systems in gas-steam combined circulating generation unit (CCPP), in addition to solidifying pump
Also need middle pressure feed pump and high pressure water pump.To prevent low-pressure coal saver low-temperature corrosion, economizer exit working medium is followed
Ring guarantees that economizer low-temperature zone temperature prevents low-temperature corrosion, therefore waste heat boiler also needs to recycle to improve economizer inlet temperature
Pump, waste heat boiler needs altogether 6 pumps in summary, follows again including pressure feed pump in 2 high pressure water pumps, 2 and 2
Ring pump.The quantity of pump mostly not merely increases the cost of purchase pump and the transportation cost of pump, and will increase pump area's occupied area,
Increase pump house support and auxiliary steel construction cost；System pipeline valve arrangement is cumbersome, and monitoring point is more, and operation maintenance is difficult, fortune
Row maintenance workload is big.
Summary of the invention
Purpose of the utility model is to solve the above-mentioned problems of the prior art, and then provide a kind of for combining
The conjunction pumping system of circulation Waste-heat Boiler.
The purpose of this utility model is achieved through the following technical solutions:
A kind of conjunction pumping system for Combined Cycle Heat Recovery Boiler, closing pumping system includes low-pressure drum, two conjunction pumps, low pressure
System, medium voltage network and high-pressure system, low-pressure system include low-pressure coal saver and low-pressure coal saver recycling water, medium voltage network packet
Middle pressure economizer and Medium pressure cycle water supply are included, high-pressure system includes high-pressure economizer and high-pressure system water supply, and two conjunction pumps use
It is connected in parallel, the entrance that low-pressure drum closes pump with two is connect by pipeline, and two outlet conduits for closing pump are connected to high pressure province
Coal device is connect with high-pressure system feed-water intake, two close pump discharges at level-one taps by pipeline be connected to low-pressure coal saver and
Low-pressure coal saver recycle water inlet connection, two close pump discharges at two pole taps by pipeline be connected to middle pressure economizer and
The connection of medium voltage network feed-water intake.
A kind of conjunction pumping system for Combined Cycle Heat Recovery Boiler of the utility model, the conjunction pump are followed again by low-pressure coal saver
Ring pump, high pressure water pump and middle pressure feed pump merge composition.
A kind of conjunction pumping system for Combined Cycle Heat Recovery Boiler of the utility model, the side closed pump and use multi-stage booster
Flow needed for formula provides recycling in the form of tap and feedwater flow.
A kind of conjunction pumping system for Combined Cycle Heat Recovery Boiler of the utility model, the low-pressure drum are drawn low pressure and are followed again
Ring water, medium voltage network water supply and high-pressure system water supply.
A kind of conjunction pumping system for Combined Cycle Heat Recovery Boiler of the utility model greatly reduces afterheat boiler system pump
Quantity, be reduced to 2 by original 6, reduce pump area's occupied area 60%, reduce auxiliary steel construction cost, simplify pipeline
Arrangement facilitates operation to overhaul.Conjunction pumping system is simple, reliable for operation, control flexibly, while can reduce the quantity of monitoring point, letter
Change operational monitoring data, reduces scene operation workload.
Detailed description of the invention
Fig. 1 is part system schematic diagram of the utility model for the conjunction pumping system of Combined Cycle Heat Recovery Boiler.
Fig. 2 is overall system schematic diagram of the utility model for the conjunction pumping system of Combined Cycle Heat Recovery Boiler.
Specific embodiment
Be described in further detail below in conjunction with attached drawing to the utility model: the present embodiment is with the utility model skill
Implemented under premised on art scheme, give detailed embodiment, but the protection scope of the utility model be not limited to it is following
Embodiment.
Embodiment one: as depicted in figs. 1 and 2, a kind of conjunction for Combined Cycle Heat Recovery Boiler involved in the present embodiment
Pumping system, comprising: low-pressure drum, two conjunctions pump, low-pressure system, medium voltage network and high-pressure systems, low-pressure system include that low pressure saves
Coal device and low-pressure coal saver recycle water, and medium voltage network includes middle pressure economizer and Medium pressure cycle water supply, and high-pressure system includes height
Economizer and high-pressure system water supply are pressed, for two conjunction pumps using being connected in parallel, low-pressure drum and two entrances for closing pump pass through pipeline
Connection, two outlet conduits for closing pump are connected to high-pressure economizer and connect with high-pressure system feed-water intake, at two conjunction pump discharges
Level-one tap low-pressure coal saver and low-pressure coal saver be connected to by pipeline recycle water inlet and connect, at two conjunction pump discharges
Two pole taps middle pressure economizer be connected to by pipeline connect with medium voltage network feed-water intake.
Embodiment two: as depicted in figs. 1 and 2, a kind of conjunction for Combined Cycle Heat Recovery Boiler involved in the present embodiment
Pumping system, the conjunction pump are made of the merging of low-pressure coal saver recirculation pump, high pressure water pump and middle pressure feed pump.
Greatly reduced by the way that low-pressure coal saver recirculation pump, high pressure water pump and middle pressure feed pump are reduced to conjunction pump scheme
The quantity of afterheat boiler system pump is reduced to 2 pumps by original 6 pumps, reduces pump area's occupied area 60%, pump area's steel construction
Also it reduces therewith.By 3 connecting tubes between low-pressure drum and low-pressure coal saver recirculation pump, high pressure water pump and middle pressure feed pump
Road is reduced to a connecting pipe, simplifies pipe arrangement, optimizes arrangement space.
Embodiment three: as depicted in figs. 1 and 2, a kind of conjunction for Combined Cycle Heat Recovery Boiler involved in the present embodiment
Pumping system, flow and feedwater flow needed for the conjunction pump uses the mode of multi-stage booster to provide recycling in the form of tap.
As shown in Fig. 2, multi-stage booster mode is controlled by regulating valve in each system.
Example IV: as depicted in figs. 1 and 2, a kind of conjunction for Combined Cycle Heat Recovery Boiler involved in the present embodiment
Pumping system, the low-pressure drum draw low pressure recycling water, medium voltage network water supply and high-pressure system water supply.
The preferable specific embodiment of the above, only the utility model, these specific embodiments are all based on this
Different implementations under utility model general idea, and the protection scope of the utility model is not limited thereto, it is any ripe
Know those skilled in the art within the technical scope disclosed by the utility model, any changes or substitutions that can be easily thought of, all
It should cover and be within the protection scope of the utility model.Therefore, the protection scope of the utility model should be with claims
Subject to protection scope.
Claims (4)
1. a kind of conjunction pumping system for Combined Cycle Heat Recovery Boiler, which is characterized in that closing pumping system includes low-pressure drum, Liang Tai
Pump, low-pressure system, medium voltage network and high-pressure system are closed, low-pressure system includes that low-pressure coal saver and low-pressure coal saver recycle water,
Medium voltage network includes middle pressure economizer and Medium pressure cycle water supply, and high-pressure system includes high-pressure economizer and high-pressure system water supply, and two
Item closes pump using being connected in parallel, and the entrance that low-pressure drum closes pump with two is connect by pipeline, and two outlet conduits for closing pump connect
It is connected to high-pressure economizer to connect with high-pressure system feed-water intake, two level-one taps closed at pump discharge are connected to low by pipeline
Pressure economizer and low-pressure coal saver recycling water inlet is connect, during two pole taps at two conjunction pump discharges are connected to by pipeline
Pressure economizer is connect with medium voltage network feed-water intake.
2. a kind of conjunction pumping system for Combined Cycle Heat Recovery Boiler according to claim 1, which is characterized in that described
Pump is closed to be made of the merging of low-pressure coal saver recirculation pump, high pressure water pump and middle pressure feed pump.
3. a kind of conjunction pumping system for Combined Cycle Heat Recovery Boiler according to claim 1, which is characterized in that the conjunction
Flow needed for pump uses the mode of multi-stage booster to provide recycling in the form of tap and feedwater flow.
4. a kind of conjunction pumping system for Combined Cycle Heat Recovery Boiler according to claim 1, which is characterized in that described low
Drum is pressed to draw low pressure recycling water, medium voltage network water supply and high-pressure system water supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822131486.9U CN209355223U (en) | 2018-12-18 | 2018-12-18 | A kind of conjunction pumping system for Combined Cycle Heat Recovery Boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822131486.9U CN209355223U (en) | 2018-12-18 | 2018-12-18 | A kind of conjunction pumping system for Combined Cycle Heat Recovery Boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209355223U true CN209355223U (en) | 2019-09-06 |
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ID=67799710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822131486.9U Active CN209355223U (en) | 2018-12-18 | 2018-12-18 | A kind of conjunction pumping system for Combined Cycle Heat Recovery Boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209355223U (en) |
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2018
- 2018-12-18 CN CN201822131486.9U patent/CN209355223U/en active Active
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