CN202118887U - Energy-saving water feeding system for boiler - Google Patents

Energy-saving water feeding system for boiler Download PDF

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Publication number
CN202118887U
CN202118887U CN2011202182383U CN201120218238U CN202118887U CN 202118887 U CN202118887 U CN 202118887U CN 2011202182383 U CN2011202182383 U CN 2011202182383U CN 201120218238 U CN201120218238 U CN 201120218238U CN 202118887 U CN202118887 U CN 202118887U
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CN
China
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boiler
valve
economizer
water
pipe
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CN2011202182383U
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Chinese (zh)
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田卫东
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田卫东
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Priority to CN2011202182383U priority Critical patent/CN202118887U/en
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Publication of CN202118887U publication Critical patent/CN202118887U/en

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Abstract

The utility model discloses an energy-saving water feeding system for a boiler, which comprises a soft water tank, a deoxidizing pump, a deoxidized water tank, a boiler water feeding pump, a coal economizer, a coal economizer blow-off cooling pond and a boiler water feeding control system. A water outlet pipe of the coal economizer is connected to an outlet on the lateral wall of the top end of the coal economizer, the water outlet pipe of the coal economizer is divided into two pipelines after being provided with an outlet stop valve of the coal economizer, one pipeline is communicated with an inlet of an upper boiler barrel of the boiler, the other pipeline is communicated with an inlet of the deoxidized water tank in a two-phase manner via a return water pipe, a return water stop valve, a return water electric adjusting valve, another return water stop valve and a return deoxidized water tank valve, the return water stop valve, the return water electric adjusting valve, the other return water stop valve and the return deoxidized water tank valve are disposed on the return water pipe in a series connection manner, and a return water bypass pipe is parallelly connected onto the return water pipe. The energy-saving water feeding system for the boiler is compact in structure, reasonable in design, small in occupied area, convenient and speedy in installation and utilization and low in costs of running, maintenance and repair, can effectively save energy, improves instant heat efficiency of the boiler, stabilizes the quality of steam, achieves the purpose of safe and economical running of the boiler and brings convenience for popularization and utilization.

Description

A kind of energy-saving type boiler water supply system
Technical field
The utility model relates to a kind of feed water system of boiler, especially relates to a kind of energy-saving type boiler water supply system.
Background technology
The feed water system of boiler of the prior art mainly contains two kinds, and a kind of is the following current feedwater, and the following current feedwater is through detecting boiler load and then carrying out boiler feedwater control through motorized adjustment; And under the big situation of feed pressure; The security of system valve is opened automatically, and unnecessary water is drained into the boiler feedwater case, has so not only increased the consumption of electric energy; And adopt thermal de-aeration to increase thermal energy consumption again, thereby influence the thermal efficiency and the steam quality of boiler; Complex operation wastes energy, operating cost is higher.Also having a kind of is to utilize boiler economizer to constitute the feed water system of boiler, and boiler economizer is an indispensable equipment of modern boiler, and its effect is to utilize the feedwater of the heat of boiler tail flue gas to reduce exhaust gas temperature; Can improve boiler thermal output after using economizer, still, the feed water system of boiler of utilizing economizer to constitute in the prior art; On the one hand exist uneven defective of feed temperature and deficiency, on the other hand, in the time of the little or blowing out of feedwater flow; The boiler tail flue gas heating can cause economizer to vaporize, and the energy has not only been wasted in vaporization, also can cause the economizer blast; Influence the normal operation of boiler, increase maintenance cost, even cause casualties.
The utility model content
The utility model technical problem to be solved is a kind of energy-saving type boiler water supply system to be provided, its compact conformation to above-mentioned deficiency of the prior art; Reasonable in design, floor space is little, installation, easy to use; Operation and maintenance and repair cost are low, and energy savings improves boiler instantaneous heat efficient, stablizes steam quality effectively; Reach the purpose of safe and economical boiler operation, be convenient to promote the use of.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of energy-saving type boiler water supply system; It is characterized in that: comprise softened water tank, deoxygenation pump, deoxygenation water tank, boiler feed pump, economizer, economizer blowdown cooling bay and boiler feedwater control system; The outlet of said softened water tank is connected with the inlet of deoxygenation pump; Said deoxygenation delivery side of pump is connected with the inlet one of deoxygenation water tank; The outlet of said deoxygenation water tank is connected with the inlet of boiler feed pump; Said boiler feedwater delivery side of pump is connected with the inlet of economizer through feed pressure table, boiler feed pump outlet non-return valve, boiler feedwater pump discharge shutoff valve, economizer water inlet stop valve, economizer water inlet check-valves and the economizer water inlet stop valve that economizer water inlet pipe and series connection are arranged on the economizer water inlet pipe; Outlet one place on the sidewall of said economizer top is connected with the economizer outlet pipe; Said economizer outlet pipe is divided into two pipelines after being provided with the economizer exit stop valve; One of them pipeline is connected with the inlet of boiler upper drum through boiler feed pipe and the boiler feed check valve, boiler feed valve and the feed meter that are arranged on the boiler feed pipe; Another pipeline is arranged on backwater stop valve one, backwater electric control valve, the backwater stop valve two on the return pipe and returns the deoxygenation Cistern valve through return pipe and series connection and is connected with the inlet two of deoxygenation water tank; Series connection is parallel with the backwater shunt valve on being provided with on one section return pipe of backwater stop valve one, backwater electric control valve and backwater stop valve two; Said backwater shunt valve is provided with backwater control bypass valve, and one section economizer water inlet pipe between said economizer water inlet check-valves and the economizer water inlet stop valve is connected with the rear end of the one section economizer outlet pipe that is provided with the economizer exit stop valve through boiler emergency water compensating pipe and the boiler emergency water compensating valve that is arranged on the boiler emergency water compensating pipe, and the sewage draining exit of said economizer bottom is connected with the inlet of economizer blowdown cooling bay; The top of said deoxygenation water tank is provided with deoxygenation water tank safety valve; The thermo detector that the top of said economizer is provided with the economizer safety valve, is used to detect the economizer Pressure gauge of hydraulic pressure in the economizer and is used to detect temperature in the economizer; The top steam outlet of said boiler upper drum is provided with steam outlet pipe; Series connection is provided with steam (vapor) outlet stop valve and steam (vapor) outlet flowmeter on the said steam outlet pipe; The boiler drain place, top of said boiler upper drum is provided with the boiler blow-down pipe; Said boiler blow-down pipe is provided with the boiler atmospheric valve; The top of said boiler upper drum also is provided with boiler safety valve and the boiler pressure gauge that is used for vapour pressure in the boiler is detected, and said boiler safety valve and boiler pressure gauge are one or more, and the bottom of said boiler upper drum is provided with the two chambers of boiler equalizing reservoir, boiler two-colour fluviograph and boiler glass plate type water level meter; Said feed pressure table, feed meter, backwater electric control valve, deoxygenation water tank safety valve, economizer safety valve, economizer Pressure gauge, thermo detector, steam (vapor) outlet flowmeter, boiler safety valve, boiler pressure gauge, the two chambers of boiler equalizing reservoir, boiler two-colour fluviograph and boiler glass plate type water level meter all join with boiler feedwater control system.
Above-mentioned a kind of energy-saving type boiler water supply system; It is characterized in that: said feed water control system comprises controller, temperature monitor and the host computer that joins with controller and temperature monitor; The input termination pressure transmitter and the differential pressure transmitter of said controller, the input termination thermo detector of said temperature monitor; The output of said feed pressure table, economizer Pressure gauge and boiler pressure gauge all joins with the input of pressure transmitter; The output of the two chambers of said feed meter, steam (vapor) outlet flowmeter and boiler equalizing reservoir all joins with the input of differential pressure transmitter, and said backwater electric control valve, deoxygenation water tank safety valve, economizer safety valve and boiler safety valve all join with the output of controller.
Above-mentioned a kind of energy-saving type boiler water supply system; It is characterized in that: the outlet of said softened water tank is connected with the inlet of deoxygenation pump through softened water tank outlet valve and the deoxygenation pump inlet valve that deoxygenation pump water inlet pipe and series connection are arranged on the deoxygenation pump water inlet pipe; Said deoxygenation delivery side of pump is connected with the inlet one of deoxygenation water tank through deoxygenation pump discharge check-valves and the deoxygenation pump discharge valve that deoxygenation tank inlet pipe and series connection are arranged on the deoxygenation tank inlet pipe, and the outlet of said deoxygenation water tank is connected with the inlet of boiler feed pump through deoxygenation water tank outlet valve and the boiler feed pump inlet valve that feed pump water inlet pipe and series connection are arranged on the feed pump water inlet pipe; Be provided with and be parallel with economizer water inlet shunt valve on one section economizer water inlet pipe of boiler feedwater pump discharge shutoff valve, said economizer water inlet shunt valve is provided with boiler feedwater pump discharge bypass stop valve; The sewage draining exit of said economizer bottom is connected with the inlet of economizer blowdown cooling bay through the economizer blowoff valve that economizer blow-off pipe and series connection are arranged on the economizer blow-off pipe.
Above-mentioned a kind of energy-saving type boiler water supply system, it is characterized in that: said thermometric is counted platinum resistance sensor.
Above-mentioned a kind of energy-saving type boiler water supply system is characterized in that: said boiler safety valve is two.
Above-mentioned a kind of energy-saving type boiler water supply system is characterized in that: and boiler pressure gauge is two.
Above-mentioned a kind of energy-saving type boiler water supply system is characterized in that: the two chambers of said boiler equalizing reservoir is connected with boiler upper drum inside with two chambers equalizing reservoir steam inlet pipe through the two chambers equalizing reservoir water inlet pipe that is arranged on boiler upper drum bottom; Be respectively arranged with two chambers equalizing reservoir water intaking valve and two chambers equalizing reservoir inlet valve on said pair of chamber equalizing reservoir water inlet pipe and the two chambers equalizing reservoir steam inlet pipe.
Above-mentioned a kind of energy-saving type boiler water supply system is characterized in that: said boiler two-colour fluviograph is connected with boiler upper drum inside through two-colour fluviograph water inlet pipe and the two-colour fluviograph steam inlet pipe that is arranged on boiler upper drum bottom; Be respectively arranged with two-colour fluviograph water intaking valve and two-colour fluviograph inlet valve on said two-colour fluviograph water inlet pipe and the two-colour fluviograph steam inlet pipe.
Above-mentioned a kind of energy-saving type boiler water supply system is characterized in that: said boiler glass plate type water level meter is connected with boiler upper drum inside through glass plate type water level meter water inlet pipe and the glass plate type water level meter steam inlet pipe that is arranged on boiler upper drum bottom; Be respectively arranged with glass plate type water level meter water intaking valve and glass plate type water level meter inlet valve on said glass plate type water level meter water inlet pipe and the glass plate type water level meter steam inlet pipe.
Above-mentioned a kind of energy-saving type boiler water supply system is characterized in that: said controller is the PLC programmable logic controller (PLC).
The utility model compared with prior art has the following advantages:
1, the compact conformation of the utility model is reasonable in design, and floor space is little, installation, easy to use.
2, economizer is connected with the inlet two of deoxygenation water tank through economizer outlet pipe, economizer exit stop valve, return pipe, backwater stop valve, backwater electric control valve, backwater stop valve and time deoxygenation Cistern valve in the utility model; Make boiler feedwater control system to intake continuously to boiler according to the evaporation capacity of boiler; Aperture through control backwater electric control valve makes the water yield more than needed in the economizer turn back to the deoxygenation water tank; Do not need thermal de-aeration heating and waste energy; And make the water in the economizer circulate continuously and can not vaporize; The accident of economizer blast can not occur, reduce operation and maintenance and repair cost, the security that has improved the feed water system of boiler.
3, the utility model not only can effectively utilize the heat of boiler tail flue gas, reduces exhaust gas temperature, improves the thermal efficiency of boiler, can also improve the feed temperature of boiler, and make feed temperature more even.
4, designed backwater shunt valve and backwater control bypass valve in the utility model; When the backwater electric control valve breaks down; Open backwater control bypass valve; Just can make the water yield more than needed in the economizer turn back to the deoxygenation water tank, can not influence the normal operation of boiler, more convenient maintenance when regulating boiler feedwater because of the fault of backwater electric control valve through the backwater shunt valve.
5, boiler emergency water compensating pipe and boiler emergency water compensating valve have been designed in the utility model; When economizer breaks down; Close economizer water inlet stop valve and economizer exit stop valve, close backwater electric control valve and backwater control bypass valve, open boiler emergency water compensating valve; The boiler feed pump feedwater just can be given boiler feedwater through boiler emergency water compensating pipe, has guaranteed the safety of boiler.
6, the utility model can improve boiler instantaneous heat efficient effectively, stablize steam quality, reaches the purpose of safe and economical boiler operation, is convenient to promote the use of.
In sum, the utility model compact conformation, reasonable in design; Floor space is little, installation, easy to use, and operation and maintenance and repair cost are low; Energy savings improves boiler instantaneous heat efficient, stablizes steam quality effectively, reaches the purpose of safe and economical boiler operation; Solved that the existing in prior technology boiler thermal output is low, steam quality is relatively poor, complex operation, waste energy, defective and deficiency such as operating cost is higher, security performance is relatively poor, be convenient to promote the use of.
Through accompanying drawing and embodiment, the technical scheme of the utility model is done further detailed description below.
Description of drawings
Fig. 1 is the structural representation of the utility model except that boiler feedwater control system.
Fig. 2 is the annexation sketch map that system and other each several parts are controlled in boiler feedwater in the utility model.
Description of reference numerals:
The 1-softened water tank; 2-deoxygenation pump; 3-deoxygenation water tank;
The 4-boiler feed pump; The 5-economizer; 6-economizer blowdown cooling bay;
7-deoxygenation pump water inlet pipe; 8-softened water tank outlet valve; 9-deoxygenation pump inlet valve;
10-deoxygenation tank inlet pipe; 11-deoxygenation pump discharge check-valves; 12-deoxygenation pump discharge valve;
13-feed pump water inlet pipe; 14-deoxygenation water tank outlet valve; 15-boiler feed pump inlet valve;
16-economizer water inlet pipe; 17-feed pressure table; 18-boiler feed pump outlet non-return valve;
19-boiler feedwater pump discharge shutoff valve; 20-economizer water inlet stop valve; 21-economizer water inlet check-valves;
22-economizer water inlet stop valve; 23-economizer water inlet shunt valve; 24-boiler feedwater pump discharge bypass stop valve;
25-economizer outlet pipe; 26-economizer exit stop valve; The 27-boiler feed pipe;
The 28-boiler feed check valve; The 29-boiler feed valve; The 30-feed meter;
31-boiler upper drum; The 32-return pipe; 33-backwater stop valve one;
34-backwater electric control valve; 35-backwater stop valve two; 36-returns the deoxygenation Cistern valve;
37-backwater shunt valve; 38-backwater control bypass valve; 39-boiler emergency water compensating pipe;
40-boiler emergency water compensating valve; 41-economizer blow-off pipe; 42-economizer blowoff valve;
43-deoxygenation water tank safety valve; 44-economizer safety valve; 45-economizer Pressure gauge;
The 46-thermo detector; The 47-steam outlet pipe; 48-steam (vapor) outlet stop valve;
49-steam (vapor) outlet flowmeter; 50-boiler blow-down pipe; 51-boiler atmospheric valve;
The 52-boiler safety valve; The 53-boiler pressure gauge; The two chambers of 54-boiler equalizing reservoir;
55-boiler two-colour fluviograph; 56-boiler glass plate type water level meter; 57-boiler feedwater control system;
The 57-1-controller; The 57-2-temperature monitor; The 57-3-host computer;
The 57-4-pressure transmitter; The 57-5-differential pressure transmitter; The two chambers of 58-equalizing reservoir water inlet pipe;
The two chambers of 59-equalizing reservoir steam inlet pipe; The two chambers of 60-equalizing reservoir water intaking valve; The two chambers of 61-equalizing reservoir inlet valve;
62-two-colour fluviograph water inlet pipe; 63-two-colour fluviograph steam inlet pipe; 64-two-colour fluviograph water intaking valve;
65-two-colour fluviograph inlet valve; 66-glass plate type water level meter water inlet pipe; 67-glass plate type water level meter steam inlet pipe;
68-glass plate type water level meter water intaking valve; 69-glass plate type water level meter inlet valve.
The specific embodiment
As shown in Figure 1; The utility model comprises softened water tank 1, deoxygenation pump 2, deoxygenation water tank 3, boiler feed pump 4, economizer 5, economizer blowdown cooling bay 6 and boiler feedwater control system 57; The outlet of said softened water tank 1 is connected with the inlet of deoxygenation pump 2; The outlet of said deoxygenation pump 2 is connected with the inlet one of deoxygenation water tank 3; The outlet of said deoxygenation water tank 3 is connected with the inlet of boiler feed pump 4; The outlet of said boiler feed pump 4 is connected with the inlet of economizer 5 through feed pressure table 17, boiler feed pump outlet non-return valve 18, boiler feedwater pump discharge shutoff valve 19, economizer water inlet stop valve 20, economizer water inlet check-valves 21 and the economizer water inlet stop valve 22 that economizer water inlet pipe 16 and series connection are arranged on the economizer water inlet pipe 16; Outlet one place on the said economizer 5 top sidewalls is connected with economizer outlet pipe 25; Said economizer outlet pipe 25 is divided into two pipelines after being provided with economizer exit stop valve 26; One of them pipeline is connected with the inlet of boiler upper drum 31 through boiler feed pipe 27 and the boiler feed check valve 28, boiler feed valve 29 and the feed meter 30 that are arranged on the boiler feed pipe 27; Another pipeline is arranged on backwater stop valve 1, backwater electric control valve 34, the backwater stop valve 2 35 on the return pipe 32 and returns deoxygenation Cistern valve 36 through return pipe 32 and series connection and is connected with the inlet two of deoxygenation water tank 3; Series connection is provided with on one section return pipe 32 of backwater stop valve 1, backwater electric control valve 34 and backwater stop valve 2 35 and is parallel with backwater shunt valve 37; Said backwater shunt valve 37 is provided with backwater control bypass valve 38; One section economizer water inlet pipe 16 between said economizer water inlet check-valves 21 and the economizer water inlet stop valve 22 is connected with the rear end of the one section economizer outlet pipe 25 that is provided with economizer exit stop valve 26 through boiler emergency water compensating pipe 39 and the boiler emergency water compensating valve 40 that is arranged on the boiler emergency water compensating pipe 39, and the sewage draining exit of said economizer 5 bottoms is connected with the inlet of economizer blowdown cooling bay 6; The top of said deoxygenation water tank 3 is provided with deoxygenation water tank safety valve 43; The thermo detector 46 that the top of said economizer 5 is provided with economizer safety valve 44, is used to detect the economizer Pressure gauge 45 of hydraulic pressure in the economizer 5 and is used to detect temperature in the economizer 5; The top steam outlet of said boiler upper drum 31 is provided with steam outlet pipe 47; Series connection is provided with steam (vapor) outlet stop valve 48 and steam (vapor) outlet flowmeter 49 on the said steam outlet pipe 47; The boiler drain place, top of said boiler upper drum 31 is provided with boiler blow-down pipe 50; Said boiler blow-down pipe 50 is provided with boiler atmospheric valve 51; The top of said boiler upper drum 31 also is provided with boiler safety valve 52 and the boiler pressure gauge 53 that is used for vapour pressure in the boiler is detected, and said boiler safety valve 52 and boiler pressure gauge 53 are one or more, and the bottom of said boiler upper drum 31 is provided with the two chambers of boiler equalizing reservoir 54, boiler two-colour fluviograph 55 and boiler glass plate type water level meter 56; Said feed pressure table 17, feed meter 30, backwater electric control valve 34, deoxygenation water tank safety valve 43, economizer safety valve 44, economizer Pressure gauge 45, thermo detector 46, steam (vapor) outlet flowmeter 49, boiler safety valve 52, boiler pressure gauge 53, the two chambers of boiler equalizing reservoir 54, boiler two-colour fluviograph 55 and boiler glass plate type water level meter 56 all join with boiler feedwater control system 57.
In conjunction with Fig. 2; In the present embodiment; Said boiler feedwater is controlled system 57 and is comprised controller 57-1, temperature monitor 57-2 and the host computer 57-3 that joins with controller 57-1 and temperature monitor 57-2; Input termination pressure transmitter 57-4 and the differential pressure transmitter 57-5 of said controller 57-1, the input termination thermo detector 50 of said temperature monitor 57-2; The output of said feed pressure table 17, economizer Pressure gauge 45 and boiler pressure gauge 53 all joins with the input of pressure transmitter 57-4; The output of the two chambers of said feed meter 30, steam (vapor) outlet flowmeter 49 and boiler equalizing reservoir 54 all joins with the input of differential pressure transmitter 57-5, and said backwater electric control valve 34, deoxygenation water tank safety valve 43, economizer safety valve 44 and boiler safety valve 52 all join with the output of controller 57-1.
As shown in Figure 1; In the present embodiment; The outlet of said softened water tank 1 is connected with the inlet of deoxygenation pump 2 with deoxygenation pump inlet valve 9 through the softened water tank outlet valve 8 that deoxygenation pump water inlet pipe 7 and series connection are arranged on the deoxygenation pump water inlet pipe 7; The outlet of said deoxygenation pump 2 is connected with the inlet one of deoxygenation water tank 3 with deoxygenation pump discharge valve 12 through the deoxygenation pump discharge check-valves 11 that deoxygenation tank inlet pipe 10 and series connection are arranged on the deoxygenation tank inlet pipe 10, and the outlet of said deoxygenation water tank 3 is connected with the inlet of boiler feed pump 4 with boiler feed pump inlet valve 15 through the deoxygenation water tank outlet valve 14 that feed pump water inlet pipe 13 and series connection are arranged on the feed pump water inlet pipe 13; Be provided with and be parallel with economizer water inlet shunt valve 23 on one section economizer water inlet pipe 16 of boiler feedwater pump discharge shutoff valve 19, said economizer water inlet shunt valve 23 is provided with boiler feedwater pump discharge bypass stop valve 24; The sewage draining exit of said economizer 5 bottoms is connected with the inlet of economizer blowdown cooling bay 6 through the economizer blowoff valve 42 that economizer blow-off pipe 41 and series connection are arranged on the economizer blow-off pipe 41.
In the present embodiment, said thermo detector 46 is a platinum resistance sensor.Said boiler safety valve 52 is two.With boiler pressure gauge 53 be two.The two chambers of said boiler equalizing reservoir 54 is connected with boiler upper drum 31 inside with two chambers equalizing reservoir steam inlet pipe 59 through the two chambers equalizing reservoir water inlet pipe 58 that is arranged on boiler upper drum 31 bottoms; Be respectively arranged with two chambers equalizing reservoir water intaking valve 60 and two chambers equalizing reservoir inlet valve 61 on said pair of chamber equalizing reservoir water inlet pipe 58 and the two chambers equalizing reservoir steam inlet pipe 59.Said boiler two-colour fluviograph 55 is connected with boiler upper drum 31 inside with two-colour fluviograph steam inlet pipe 63 through the two-colour fluviograph water inlet pipe 62 that is arranged on boiler upper drum 31 bottoms; Be respectively arranged with two-colour fluviograph water intaking valve 64 and two-colour fluviograph inlet valve 65 on said two-colour fluviograph water inlet pipe 62 and the two-colour fluviograph steam inlet pipe 63.Said boiler glass plate type water level meter 56 is connected with boiler upper drum 31 inside with glass plate type water level meter steam inlet pipe 67 through the glass plate type water level meter water inlet pipe 66 that is arranged on boiler upper drum 31 bottoms; Be respectively arranged with glass plate type water level meter water intaking valve 68 and glass plate type water level meter inlet valve 69 on said glass plate type water level meter water inlet pipe 66 and the glass plate type water level meter steam inlet pipe 67.Said controller 57-1 is the PLC programmable logic controller (PLC).
The operation principle and the course of work of the utility model are: open softened water tank outlet valve 8, deoxygenation pump inlet valve 9, deoxygenation pump discharge check-valves 11, deoxygenation pump discharge valve 12, deoxygenation water tank outlet valve 14 and boiler feed pump inlet valve 15, boiler feed pump outlet non-return valve 18, boiler feedwater pump discharge shutoff valve 19, economizer water inlet stop valve 20, economizer water inlet check-valves 21 and economizer water inlet stop valve 22; Water in the softened water tank 1 enters into deoxygenation pump 2 through deoxygenation pump water inlet pipe 7; Deoxygenation pump 2 is sent to water in the deoxygenation water tank 3 through deoxygenation tank inlet pipe 10 with certain flow velocity after water level is improved again; After deoxygenation water tank 3 is removed the oxygen and other incondensable gases in the boiler feedwater; Water enters into boiler feed pump 4 through feed pump water inlet pipe 13 again; Boiler feed pump 4 is sent to water in the economizer 5 through economizer water inlet pipe 16 with certain flow velocity after water level is improved again; Simultaneously, the feed pressure table 17 that is arranged on the economizer water inlet pipe 16 detects feed pressure and is transferred to controller 57-1 through pressure transmitter 57-4; Enter into the heat of the feedwater of economizer 5 through boiler tail flue gas; Thermo detector 46 detects the feed temperature in the economizer 5 and its detected signal is transferred to host computer 57-3 through temperature monitor 57-2 and shows; Economizer Pressure gauge 45 detects the hydraulic pressure in the economizers 5 and its detected signal is transferred to controller 57-1 through pressure transmitter 57-4; When vaporization took place the water in the economizer 5, controller 57-1 control economizer safety valve 44 was opened pressure release automatically; Open economizer exit stop valve 26, boiler feed check valve 28, boiler feed valve 29, backwater stop valve 33, backwater electric control valve 34, backwater stop valve 35 and return deoxygenation Cistern valve 36; Water through economizer 5 heating enters into boiler upper drum 31 through economizer outlet pipe 25 and boiler feed pipe 27; Give the boiler continuous water feeding; Make confluent satisfy boiler capacity, simultaneously, the vapour pressure signal in the boiler pressure gauge 53 detected boilers is transferred to controller 57-1 through pressure transmitter 57-4; When boiler pressure gauge 53 detected vapour pressure in the boiler and surpasses setting value, controller 57-1 control boiler safety valve 52 was opened pressure release automatically; The two chambers of boiler equalizing reservoir 54 detected boiler water level signals, steam (vapor) outlet flowmeter 49 detected Boiler Steam flow signals and feed meter 30 detected feedwater flow signals all are transferred to controller 57-1 through differential pressure transmitter 57-5; Controller 57-1 controls the aperture of backwater electric control valve 34 according to boiler water level signal, Boiler Steam flow signal and feedwater flow signal; When boiler capacity is little; Controller 57-1 control backwater electric control valve 34 is opened fully; Water through economizer 5 heating is back in the deoxygenation water tank 3 through economizer outlet pipe 25 and return pipe 32 again; And then from deoxygenation water tank 3, turn back in the economizer 5 through boiler feed pump 4,5 circulation heating resupply boiler through economizer.Like this, when having improved boiler feed temperature, economizer 5 is intake continuously; Guaranteed that economizer 5 does not produce vaporization because of water temperature raises, effectively energy savings has guaranteed the safe and economical boiler operation; Stablize steam quality, improved the thermal efficiency of boiler, thereby reduced the energy consumption of boiler.Wherein, boiler two-colour fluviograph 55 all is used to show the real water level in the boiler with boiler glass plate type water level meter 56.
When backwater electric control valve 34 breaks down; Close backwater stop valve 33 and backwater stop valve 35; Manual unlocking backwater control bypass valve 38; Water through economizer 5 heating is back in the deoxygenation water tank 3 through economizer outlet pipe 25 and backwater shunt valve 37, and more convenient maintenance when regulating boiler feedwater can not influence the normal operation of boiler because of the fault of backwater electric control valve 34.
When economizer 5 breaks down; Close economizer water inlet stop valve 22 and economizer exit stop valve 26; Close backwater electric control valve 34 and backwater control bypass valve 38, open boiler emergency water compensating valve 40, boiler feed pump 4 feedwater enter into boiler upper drum 31 through economizer water inlet pipe 16, boiler emergency water compensating pipe 39 and boiler feed pipe 27; Give boiler feedwater, guaranteed the safety of boiler.
In sum, the utility model is energy savings effectively, improves boiler instantaneous heat efficient, stablizes steam quality, reaches the purpose of safe and economical boiler operation.
The above; It only is the preferred embodiment of the utility model; Be not that the utility model is done any restriction; Everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of the utility model technical scheme according to the utility model technical spirit.

Claims (10)

1. energy-saving type boiler water supply system; It is characterized in that: comprise softened water tank (1), deoxygenation pump (2), deoxygenation water tank (3), boiler feed pump (4), economizer (5), economizer blowdown cooling bay (6) and boiler feedwater control system (57); The outlet of said softened water tank (1) is connected with the inlet of deoxygenation pump (2); The outlet of said deoxygenation pump (2) is connected with the inlet one of deoxygenation water tank (3); The outlet of said deoxygenation water tank (3) is connected with the inlet of boiler feed pump (4); The outlet of said boiler feed pump (4) is connected with the inlet of economizer (5) through feed pressure table (17), boiler feed pump outlet non-return valve (18), boiler feedwater pump discharge shutoff valve (19), economizer water inlet stop valve (20), economizer water inlet check-valves (21) and the economizer water inlet stop valve (22) that economizer water inlet pipe (16) and series connection are arranged on the economizer water inlet pipe (16); Outlet one place on the sidewall of said economizer (5) top is connected with economizer outlet pipe (25); Said economizer outlet pipe (25) is divided into two pipelines after being provided with economizer exit stop valve (26); One of them pipeline is connected with the inlet of boiler upper drum (31) through boiler feed pipe (27) and the boiler feed check valve (28), boiler feed valve (29) and the feed meter (30) that are arranged on the boiler feed pipe (27); Another pipeline is arranged on backwater stop valve one (33), backwater electric control valve (34), the backwater stop valve two (35) on the return pipe (32) and returns deoxygenation Cistern valve (36) through return pipe (32) and series connection and is connected with the inlet two of deoxygenation water tank (3); Series connection is provided with on one section return pipe of backwater stop valve one (33), backwater electric control valve (34) and backwater stop valve two (35) and is parallel with backwater shunt valve (37) on (32); Said backwater shunt valve (37) is provided with backwater control bypass valve (38); One section economizer water inlet pipe (16) that said economizer water inlet check-valves (21) and economizer are intake between the stop valve (22) is connected with the rear end of the one section economizer outlet pipe (25) that is provided with economizer exit stop valve (26) through boiler emergency water compensating pipe (39) and the boiler emergency water compensating valve (40) that is arranged on the boiler emergency water compensating pipe (39), and the sewage draining exit of said economizer (5) bottom is connected with the inlet of economizer blowdown cooling bay (6); The top of said deoxygenation water tank (3) is provided with deoxygenation water tank safety valve (43); The thermo detector (46) that the top of said economizer (5) is provided with economizer safety valve (44), is used to detect the economizer Pressure gauge (45) of the interior hydraulic pressure of economizer (5) and is used to detect the interior temperature of economizer (5); The top steam outlet of said boiler upper drum (31) is provided with steam outlet pipe (47); Said steam outlet pipe (47) is gone up series connection and is provided with steam (vapor) outlet stop valve (48) and steam (vapor) outlet flowmeter (49); The boiler drain place, top of said boiler upper drum (31) is provided with boiler blow-down pipe (50); Said boiler blow-down pipe (50) is provided with boiler atmospheric valve (51); The boiler pressure gauge (53) that the top of said boiler upper drum (31) also is provided with boiler safety valve (52) and is used for vapour pressure in the boiler is detected; Said boiler safety valve (52) and boiler pressure gauge (53) are one or more, and the bottom of said boiler upper drum (31) is provided with the two chamber equalizing reservoirs (54) of boiler, boiler two-colour fluviograph (55) and boiler glass plate type water level meter (56); Said feed pressure table (17), feed meter (30), backwater electric control valve (34), deoxygenation water tank safety valve (43), economizer safety valve (44), economizer Pressure gauge (45), thermo detector (46), steam (vapor) outlet flowmeter (49), boiler safety valve (52), boiler pressure gauge (53), the two chamber equalizing reservoirs (54) of boiler, boiler two-colour fluviograph (55) and boiler glass plate type water level meter (56) all join with boiler feedwater control system (57).
2. according to the described a kind of energy-saving type boiler water supply system of claim 1; It is characterized in that: said boiler feedwater control system (57) comprises controller (57-1), temperature monitor (57-2) and the host computer (57-3) that joins with controller (57-1) and temperature monitor (57-2); The input termination pressure transmitter (57-4) of said controller (57-1) and differential pressure transmitter (57-5), the input termination thermo detector (50) of said temperature monitor (57-2); The output of said feed pressure table (17), economizer Pressure gauge (45) and boiler pressure gauge (53) all joins with the input of pressure transmitter (57-4); The output of the two chamber equalizing reservoirs (54) of said feed meter (30), steam (vapor) outlet flowmeter (49) and boiler all joins with the input of differential pressure transmitter (57-5), and said backwater electric control valve (34), deoxygenation water tank safety valve (43), economizer safety valve (44) and boiler safety valve (52) all join with the output of controller (57-1).
3. according to claim 1 or 2 described a kind of energy-saving type boiler water supply systems; It is characterized in that: the outlet of said softened water tank (1) is connected with the inlet of deoxygenation pump (2) through softened water tank outlet valve (8) and the deoxygenation pump inlet valve (9) that deoxygenation pump water inlet pipe (7) and series connection are arranged on the deoxygenation pump water inlet pipe (7); The outlet of said deoxygenation pump (2) is connected with the inlet one of deoxygenation water tank (3) through deoxygenation pump discharge check-valves (11) and the deoxygenation pump discharge valve (12) that deoxygenation tank inlet pipe (10) and series connection are arranged on the deoxygenation tank inlet pipe (10), and the outlet of said deoxygenation water tank (3) is connected with the inlet of boiler feed pump (4) through deoxygenation water tank outlet valve (14) and the boiler feed pump inlet valve (15) that feed pump water inlet pipe (13) and series connection are arranged on the feed pump water inlet pipe (13); Be provided with and be parallel with economizer water inlet shunt valve (23) on one section economizer water inlet pipe (16) of boiler feedwater pump discharge shutoff valve (19), said economizer water inlet shunt valve (23) is provided with boiler feedwater pump discharge bypass stop valve (24); The sewage draining exit of said economizer (5) bottom is connected with the inlet of economizer blowdown cooling bay (6) through the economizer blowoff valve (42) that economizer blow-off pipe (41) and series connection are arranged on the economizer blow-off pipe (41).
4. according to claim 1 or 2 described a kind of energy-saving type boiler water supply systems, it is characterized in that: said thermo detector (46) is a platinum resistance sensor.
5. according to claim 1 or 2 described a kind of energy-saving type boiler water supply systems, it is characterized in that: said boiler safety valve (52) is two.
6. according to claim 1 or 2 described a kind of energy-saving type boiler water supply systems, it is characterized in that: and boiler pressure gauge (53) is two.
7. according to claim 1 or 2 described a kind of energy-saving type boiler water supply systems, it is characterized in that: the two chamber equalizing reservoirs (54) of said boiler are connected with boiler upper drum (31) inside through two chamber equalizing reservoir water inlet pipes (58) and the two chamber equalizing reservoir steam inlet pipe (59) that is arranged on boiler upper drum (31) bottom; Be respectively arranged with two chamber equalizing reservoir water intaking valves (60) and two chamber equalizing reservoir inlet valve (61) on said pair of chamber equalizing reservoir water inlet pipe (58) and the two chamber equalizing reservoir steam inlet pipe (59).
8. according to claim 1 or 2 described a kind of energy-saving type boiler water supply systems, it is characterized in that: said boiler two-colour fluviograph (55) is connected with boiler upper drum (31) inside through two-colour fluviograph water inlet pipe (62) and the two-colour fluviograph steam inlet pipe (63) that is arranged on boiler upper drum (31) bottom; Be respectively arranged with two-colour fluviograph water intaking valve (64) and two-colour fluviograph inlet valve (65) on said two-colour fluviograph water inlet pipe (62) and the two-colour fluviograph steam inlet pipe (63).
9. according to claim 1 or 2 described a kind of energy-saving type boiler water supply systems, it is characterized in that: said boiler glass plate type water level meter (56) is connected with boiler upper drum (31) inside through glass plate type water level meter water inlet pipe (66) and the glass plate type water level meter steam inlet pipe (67) that is arranged on boiler upper drum (31) bottom; Be respectively arranged with glass plate type water level meter water intaking valve (68) and glass plate type water level meter inlet valve (69) on said glass plate type water level meter water inlet pipe (66) and the glass plate type water level meter steam inlet pipe (67).
10. according to the described a kind of energy-saving type boiler water supply system of claim 2, it is characterized in that: said controller (57-1) is the PLC programmable logic controller (PLC).
CN2011202182383U 2011-06-25 2011-06-25 Energy-saving water feeding system for boiler CN202118887U (en)

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CN2011202182383U CN202118887U (en) 2011-06-25 2011-06-25 Energy-saving water feeding system for boiler

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Application Number Priority Date Filing Date Title
CN2011202182383U CN202118887U (en) 2011-06-25 2011-06-25 Energy-saving water feeding system for boiler

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CN202118887U true CN202118887U (en) 2012-01-18

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103307591A (en) * 2013-05-24 2013-09-18 北京石油化工工程有限公司 Boiler blow down system
CN103542399A (en) * 2013-10-28 2014-01-29 中国能源建设集团广东省电力设计研究院 Boiler feed water system and feed water adjusting method thereof
CN103644648A (en) * 2013-12-29 2014-03-19 哈尔滨红光锅炉总厂有限责任公司 Forced water circulation high-capacity hot water boiler of circulating fluidized bed
CN104132326A (en) * 2014-08-08 2014-11-05 中国电力工程顾问集团西南电力设计院 CFB boiler emergency water supplementing system without emergency water supplementing box
CN104879739A (en) * 2015-06-15 2015-09-02 中钢集团鞍山热能研究院有限公司 Balance container system capable of performing online setting check and online setting check method based on balance container system
CN110906311A (en) * 2019-12-11 2020-03-24 河南中烟工业有限责任公司 Boiler water charging system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103307591A (en) * 2013-05-24 2013-09-18 北京石油化工工程有限公司 Boiler blow down system
CN103307591B (en) * 2013-05-24 2014-11-26 北京石油化工工程有限公司 Boiler blow down system
CN103542399A (en) * 2013-10-28 2014-01-29 中国能源建设集团广东省电力设计研究院 Boiler feed water system and feed water adjusting method thereof
CN103542399B (en) * 2013-10-28 2015-05-27 中国能源建设集团广东省电力设计研究院有限公司 Boiler feed water system and feed water adjusting method thereof
CN103644648A (en) * 2013-12-29 2014-03-19 哈尔滨红光锅炉总厂有限责任公司 Forced water circulation high-capacity hot water boiler of circulating fluidized bed
CN103644648B (en) * 2013-12-29 2016-02-03 哈尔滨红光锅炉总厂有限责任公司 A kind of Large Copacity Circulating Fluidized Bed Hot Water Boiler of forced water circulation
CN104132326A (en) * 2014-08-08 2014-11-05 中国电力工程顾问集团西南电力设计院 CFB boiler emergency water supplementing system without emergency water supplementing box
CN104132326B (en) * 2014-08-08 2016-03-16 中国电力工程顾问集团西南电力设计院有限公司 A kind of CFB boiler emergency water compensating system without emergency water compensating case
CN104879739A (en) * 2015-06-15 2015-09-02 中钢集团鞍山热能研究院有限公司 Balance container system capable of performing online setting check and online setting check method based on balance container system
CN110906311A (en) * 2019-12-11 2020-03-24 河南中烟工业有限责任公司 Boiler water charging system

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EE01 Entry into force of recordation of patent licensing contract

Assignee: Shaanxi Huacheng Shouchuang Environmental Protection Technology Co.,Ltd.

Assignor: Tian Weidong

Contract record no.: 2012610000125

Denomination of utility model: Energy-saving water feeding system for boiler

Granted publication date: 20120118

License type: Exclusive License

Record date: 20120718

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120118

Termination date: 20140625