CN209263108U - A kind of heat supply network draining system - Google Patents
A kind of heat supply network draining system Download PDFInfo
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- CN209263108U CN209263108U CN201822081850.5U CN201822081850U CN209263108U CN 209263108 U CN209263108 U CN 209263108U CN 201822081850 U CN201822081850 U CN 201822081850U CN 209263108 U CN209263108 U CN 209263108U
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- pressure heater
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- heat supply
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Abstract
The utility model discloses a kind of heat supply network draining systems, comprising: heat exchangers for district heating, hydrophobic pipeline, the first low-pressure heater and oxygen-eliminating device；Wherein, oxygen-eliminating device includes deaerator storage tank；Heat exchangers for district heating is connected to by hydrophobic pipeline with the entrance of the first low-pressure heater, the outlet of first low-pressure heater is connected to deaerator storage tank, so that hydrophobic after primary heater heats in hydrophobic pipeline, it is delivered to deaerator storage tank again, so that being increased into drain temperature in deaerator storage tank, drain temperature can be made to be more nearly with the temperature in deaerator storage tank, and then reduce the steam extraction amount of steam turbine, steam turbine is allowed to be used to generate electricity by more steam, and then under the premise of and guarantee heat supply identical using fuel quantity, it can more generate electricity, reduce the loss of system capacity, it is more energy saving.
Description
Technical field
The utility model embodiment is related to heat supply network heat supply process field more particularly to a kind of heat supply network draining system.
Background technique
Heat supply network draining system is the important component of heat network system, and system configuration is related to heat network system and entire heat
The safety and economical operation of Force system.
In the prior art, the traditional city heat supply heat supply network hydrophobic point in thermal power plant is designed as the overcritical above unit heat supply
Heat supply network is hydrophobic to be recovered to condenser after drain cooler, using precision processing after mixing with condensed water, to guarantee boiler feedwater
Water quality.Subcritical and high-pressure system heat supply network drain design be recovered to deaerator storage tank it is ensured that boiler feedwater water quality.It is right
It is hydrophobic to be usually fed directly to deaerator storage tank through hydrophobic pipeline in precritical heating unit.
However, Subcritical Units heating pressure heats vapour source pressure lower than oxygen-eliminating device, heat supply network drain temperature, which is lower than, to be removed
Oxygen device drain tank temperature, due to the presence of heat transfer temperature difference, it is defeated to will increase steam extraction heat regenerative system when drain recovery is to deaerator storage tank
Enter the steam extraction amount to deaerator storage tank, and the high quality for the general high temperature and pressure of steam for being used to be input to deaerator storage tank is steamed
Vapour, excessive steam extraction amount cause the loss of system capacity, are unfavorable for energy conservation.
Utility model content
The utility model provides a kind of heat supply network draining system, reduces the quantity of steam for being input to deaerator storage tank, section to realize
About energy consumption.
The utility model embodiment provides a kind of heat supply network draining system, comprising: heat exchangers for district heating, hydrophobic pipeline, first
Low-pressure heater and oxygen-eliminating device；Wherein, oxygen-eliminating device includes deaerator storage tank；
Heat exchangers for district heating is connected to by hydrophobic pipeline with the entrance of the first low-pressure heater, the outlet of the first low-pressure heater
It is connected to deaerator storage tank.
Wherein, regulating valve is provided in hydrophobic pipeline.
Wherein, hydrophobic pipeline is provided at least one drainage pump close to the side of heat exchangers for district heating, the entrance of drainage pump with
Heat exchangers for district heating connection, the outlet of drainage pump is connected to the entrance of the first low-pressure heater.
Wherein, which further includes Ion exchange resin pipeline, and Ion exchange resin pipeline includes condenser, first
Low-pressure heater, the second low-pressure heater, third low-pressure heater and the 4th low-pressure heater, condenser and the 4th low-pressure heating
Device connection, the 4th low-pressure heater are connected to third low-pressure heater, and third low-pressure heater is connected to the first low-pressure heater,
First low-pressure heater is connected to the second low-pressure heater, and the second low-pressure heater is connected to deaerator storage tank.
Wherein, the hydrophobic pressure of hydrophobic pump discharge is greater than third low-pressure heater outlet condensation water pressure.
Wherein, the first low-pressure heater, the second low-pressure heater, third low-pressure heater and the 4th low-pressure heater difference
It includes an inlet and an outlet, electrically operated valve is set at the entrance and exit of each low-pressure heater.
Wherein, regulating valve includes the first electrically operated valve close to the side of drainage pump, and regulating valve is close to the first low-pressure heater
Side include first manual valve.
Wherein, bypass valve is additionally provided in hydrophobic pipeline, the two sides of bypass valve are connected to the first electrically operated valve
Close to the side of drainage pump and first manual valve close to the side of the first low-pressure heater.
Wherein, flowmeter is additionally provided in hydrophobic pipeline, the one of outlet of the regulating valve close to drainage pump is arranged in flowmeter
Side.
Wherein, reverse stop valve, the second electrically operated valve and the second manually-operated gate, reverse stop valve are additionally provided in hydrophobic pipeline to set
It sets in the side of hydrophobic pump discharge, the second electrically operated valve is arranged between reverse stop valve and flowmeter, the setting of the second manually-operated gate
In the side of hydrophobic pump intake.
Heat supply network draining system provided in this embodiment includes: heat exchangers for district heating, drain pipe by setting heat supply network draining system
Road, the first low-pressure heater and oxygen-eliminating device；Heat exchangers for district heating is connected to by hydrophobic pipeline with the entrance of the first low-pressure heater, the
The outlet of one low-pressure heater is connected to deaerator storage tank, so that it is hydrophobic after primary heater heats in hydrophobic pipeline,
It is delivered to deaerator storage tank again, so that increasing into drain temperature in deaerator storage tank, drain temperature and oxygen-eliminating device can be made
Temperature in water tank is more nearly, and then reduces the steam extraction amount of steam turbine, and steam turbine is allowed to be used to send out by more steam
Electricity, so using fuel quantity it is identical and guarantee heat supply under the premise of, can more generate electricity, compared with the prior art in will dredge
The structure of the hydrophobic heat supply network draining system for being fed directly to deaerator storage tank in water lines, can reduce the damage of system capacity
It loses, it is more energy saving.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of heat supply network draining system provided by the embodiment of the utility model；
Fig. 2 is a kind of structural schematic diagram for heat supply network draining system that another embodiment of the utility model provides；
Fig. 3 is a kind of structural schematic diagram for heat supply network draining system that another embodiment of the utility model provides.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model, rather than the restriction to the utility model.It further needs exist for
It is bright, part relevant to the utility model is illustrated only for ease of description, in attached drawing rather than entire infrastructure.
Fig. 1 is a kind of structural schematic diagram of heat supply network draining system provided by the embodiment of the utility model, with reference to Fig. 1, the heat
Net draining system includes: heat exchangers for district heating 110, hydrophobic pipeline 120, the first low-pressure heater 130 and oxygen-eliminating device 140；Wherein, it removes
Oxygen device 140 includes deaerator storage tank 141；
Heat exchangers for district heating 110 is connected to by hydrophobic pipeline 120 with the entrance of the first low-pressure heater 130, and the first low pressure adds
The outlet of hot device 130 is connected to deaerator storage tank 141.
It include steam turbine in heat supply network, steam turbine includes steam bleeding system, and cogeneration of heat and power heat supply network system is in heat supply period, steam turbine
Usually using thermic load as controlled plant, after meeting extraneous heat demand, remaining steam is used to generate electricity.As mentioned in background technique
, precritical heating unit its it is hydrophobic be usually fed directly to deaerator storage tank 141 through hydrophobic pipeline 120, but it is sub-
Criticality benchmark heating pressure heats vapour source pressure lower than oxygen-eliminating device 140, and heat supply network drain temperature is lower than 140 water tank temperature of oxygen-eliminating device
Degree, due to the presence of heat transfer temperature difference, will increase steam extraction heat regenerative system and be input to deoxygenation when drain recovery is to 140 water tank of oxygen-eliminating device
The steam extraction amount of the water tank of device 140, and the high quality for the general high temperature and pressure of steam for being used to be input to the water tank of oxygen-eliminating device 140 is steamed
Vapour, excessive steam extraction amount cause the loss of system capacity, are unfavorable for energy conservation.
Based on the above issues, in heat supply network draining system provided in this embodiment, hydrophobic pipeline 120 is entered with primary heater
Mouth connection, the outlet of primary heater are connected to the water tank of oxygen-eliminating device 140, so that hydrophobic after the heating of heat exchangers for district heating 110
After being delivered to primary heater heating by hydrophobic pipeline 120, then it is delivered to the water tank of oxygen-eliminating device 140, so that into oxygen-eliminating device 140
Water tank in drain temperature increase, drain temperature can be made to be more nearly with the temperature in the water tank of oxygen-eliminating device 140, and then subtract
The steam extraction amount of few steam turbine, allows steam turbine to be used to generate electricity by more steam, and then in and guarantor identical using fuel quantity
Under the premise of testimony heat, can more generate electricity, compared with the prior art in hydrophobic in hydrophobic pipeline 120 is fed directly to
The structure of the heat supply network draining system of deaerator storage tank 141 can reduce the loss of system capacity, more energy saving.
Heat supply network draining system provided in this embodiment includes: heat exchangers for district heating, drain pipe by setting heat supply network draining system
Road, the first low-pressure heater and oxygen-eliminating device；Heat exchangers for district heating is connected to by hydrophobic pipeline with the entrance of the first low-pressure heater, the
The outlet of one low-pressure heater is connected to deaerator storage tank, so that it is hydrophobic after primary heater heats in hydrophobic pipeline,
It is delivered to deaerator storage tank again, so that increasing into drain temperature in deaerator storage tank, drain temperature and oxygen-eliminating device can be made
Temperature in water tank is more nearly, and then reduces the steam extraction amount of steam turbine, and steam turbine is allowed to be used to send out by more steam
Electricity, so using fuel quantity it is identical and guarantee heat supply under the premise of, can more generate electricity, compared with the prior art in will dredge
The structure of the hydrophobic heat supply network draining system for being fed directly to deaerator storage tank in water lines, can reduce the damage of system capacity
It loses, it is more energy saving.
Fig. 2 show a kind of structural schematic diagram for heat supply network draining system that another embodiment of the utility model provides, this reality
It applies example to establish on the basis of above-described embodiment, it is further provided a kind of optional heat supply network draining system.
With reference to Fig. 2, optionally, regulating valve 121 is provided in hydrophobic pipeline 120.
Regulating valve 121 is set in hydrophobic pipeline 120, can conveniently adjust the hydrophobic flow in hydrophobic pipeline 120, into
And facilitate control into the hydrophobic amount of deaerator storage tank 141.
On the basis of above scheme, optionally, hydrophobic pipeline 120 close to the side of heat exchangers for district heating 110 be provided with to
A few drainage pump 122, the entrance of drainage pump 122 are connected to heat exchangers for district heating 110, the outlet of drainage pump 122 and the first low pressure
The entrance of heater 130 is connected to.
Drainage pump 122 can provide power for hydrophobic in hydrophobic pipeline 120, and then can guarantee that entering the first low pressure adds
Hydrophobic amount in hot device 130 also ensures the hydrophobic amount into deaerator storage tank 141, prevents from dredging because of the hydrophobic threshold values that is short of power
In water lines 120 the problem of hydrophobic unsmooth flowing.
On the basis of above scheme, optionally, heat supply network draining system further includes Ion exchange resin pipeline 200, condensed water
Handling pipeline 200 includes condenser 210, the first low-pressure heater 130, the second low-pressure heater 220, third low-pressure heater
230 and the 4th low-pressure heater 240, condenser 210 be connected to the 4th low-pressure heater 240, the 4th low-pressure heater 240 and
The connection of three low-pressure heaters 230, third low-pressure heater 230 are connected to the first low-pressure heater 130, the first low-pressure heater
130 are connected to the second low-pressure heater 220, and the second low-pressure heater 220 is connected to deaerator storage tank 141.
Specifically, steam turbine can be to the 4th low-pressure heater 240, third low-pressure heater 230, the first low-pressure heater
120,220 steam extraction of the second low-pressure heater, extraction temperature successively increase, and heat exchangers for district heating 110 is heated in heat supply period via outer net
The return water that heat exchange station flows back to, when being in non-heating period, the condensed water in condenser 210 connecting with power supply unit is successively through
After four low-pressure heaters 240, third low-pressure heater 230, the first low-pressure heater 130 and the heating of the second low-pressure heater 220,
Be delivered to deaerator storage tank 141, with to the condensed water heating after recycle.
On the basis of above scheme, drainage pump 122 exports hydrophobic pressure greater than the outlet of third low-pressure heater 230 condensation
Water pressure.
Drainage pump 122 exports hydrophobic pressure greater than the outlet of third low-pressure heater 230 condensation water pressure, it is ensured that passes through
The hydrophobic of the output of drainage pump 122 can flow into Ion exchange resin pipeline 200, and then be able to enter the first low-pressure heater 130, with
Heat the first low-pressure heater 130 to hydrophobic, the first low-pressure heater 130 is low to entering second after hydrophobic heat
Pressure heater 220 continues to heat to hydrophobic, so that the drain temperature into deaerator storage tank 141 is higher, makes drain temperature
It is more nearly with the water tank temperature of oxygen-eliminating device 140, and then reduces steam extraction amount of the steam turbine into deaerator storage tank 141, made more
Steam turbine steam for generating electricity, it is energy saving, reduce energy consumption.
On the basis of above scheme, optionally, the first low-pressure heater 130, the second low-pressure heater 220, third are low
Pressure heater 230 and the 4th low-pressure heater 240 respectively include entrance and exit, at the entrance and exit of each low-pressure heater
Electrically operated valve 250 is set.
Electrically operated valve 250 is set at the entrance and exit of low-pressure heater, it can be by being switched on or off electrically operated valve
250, it controls hydrophobic or condensed water and flows into or do not flow into corresponding low-pressure heater, such as break down in a certain low-pressure heater
When, the electrically operated valve at the low-pressure heater entrance and exit is turned off, the convenient repair and maintenance to low-pressure heater works.Separately
Outside, also bypass valve 260 can be set between the electrically operated valve of electrically operated valve and entrance that each low-pressure heater exports, so that
When low-pressure heater needs repairing, hydrophobic or condensed water can enter deaerator storage tank 141 by the bypass valve 260.
On the basis of above scheme, optionally, regulating valve 121 includes the first motor-driven valve close to the side of drainage pump 122
Door 123, regulating valve includes first manual valve 124 close to the side of the first low-pressure heater 130.
The first electrically operated valve 123 and first manual valve 124 is respectively set in the two sides of regulating valve 121, can adjust
When valve 121 needs repairing, the first electrically operated valve 123 and first manual valve 124 are turned off, makes repair and maintenance or replacement regulating valve
121 is more convenient.
On the basis of above scheme, optionally, bypass valve 125, bypass valve are additionally provided in hydrophobic pipeline 120
125 two sides are connected to the first electrically operated valve 212 close to the side of drainage pump 122 and first manual valve 121 close to
The side of one low-pressure heater 130.
By the way that bypass valve 125 is arranged in hydrophobic pipeline 120, the two sides of bypass valve 125 are connected to the first electricity
Movable valve 123 is close to 122 side of drainage pump and first manual valve 124 close to the side of the first low-pressure heater 130, Ke Yi
When the maintenance of regulating valve 123 or replacement, hydrophobic in hydrophobic pipeline 120 can be delivered to the first low-pressure heating by bypass valve 125
Device 130.
On the basis of above scheme, optionally, flowmeter 126 is additionally provided in hydrophobic pipeline 120, flowmeter 126 is set
Set the side in regulating valve 121 close to the outlet of drainage pump 122.
Flowmeter 126 is set close to the outlet side of drainage pump in regulating valve, can be convenient in detection hydrophobic pipeline 120
Hydrophobic flow.
On the basis of above scheme, optionally, reverse stop valve 127, the second motor-driven valve are additionally provided in hydrophobic pipeline 120
The side of the outlet of drainage pump 122 is arranged in door 128 and the second manually-operated gate 129, reverse stop valve 127, and the second electrically operated valve 128 is set
It sets between reverse stop valve 127 and flowmeter 126, the side of 122 entrance of drainage pump is arranged in the second manually-operated gate 129.
Specifically, reverse stop valve 127 is arranged in hydrophobic pipeline 120, hydrophobic refluence can be prevented；And in drainage pump
The second electrically operated valve 128 and the second manually-operated gate 129 is respectively set in 122 two sides, can pass through when drainage pump breaks down
Turning off the second electrically operated valve 128 and the second manually-operated gate 129 prevents hydrophobic arrival drainage pump, the convenient maintenance to drainage pump 122
Maintenance.
Fig. 3 show a kind of structural schematic diagram for heat supply network draining system that another embodiment of the utility model provides, reference
Fig. 3 can also retain some valves being equipped in original hydrophobic pipeline, such as appended drawing reference in figure on the basis of above scheme
The part indicated in 400, using as spare.
Heat supply network draining system provided in this embodiment can conveniently adjust thin by the way that regulating valve is arranged in hydrophobic pipeline
Hydrophobic flow in water lines, and then facilitate control into the hydrophobic amount of deaerator storage tank；And by being leaned in hydrophobic pipeline
At least one drainage pump is arranged in the side of nearly heat exchangers for district heating, and the entrance of drainage pump is connected to heat exchangers for district heating, hydrophobic pump intake
Outlet be connected to the entrance of the first low-pressure heater, drainage pump can provide power, Jin Erke for hydrophobic in hydrophobic pipeline
To guarantee the hydrophobic amount entered in the first low-pressure heater, also ensures the hydrophobic amount into deaerator storage tank, prevent because hydrophobic
The problem of hydrophobic unsmooth flowing in threshold values hydrophobic pipeline that is short of power；And setting heat supply network draining system further includes condensate pipe
Road, condensate line include the 4th low-pressure heater, third low-pressure heater, the first low-pressure heater and second being sequentially communicated
Low-pressure heater so that it is hydrophobic enter condensate line after, heated by the first low-pressure heater and secondary heater,
It is further increased so that entering water temperature hydrophobic in deaerator storage tank, more reduction steam extraction of the steam turbine to deaerator storage tank
Amount reduces energy loss, energy saving.
Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright
Aobvious variation, readjustment and substitution is without departing from the protection scope of the utility model.Therefore, although passing through above embodiments
The utility model is described in further detail, but the utility model is not limited only to above embodiments, is not departing from
It can also include more other equivalent embodiments in the case that the utility model is conceived, and the scope of the utility model is by appended
Scope of the claims determine.
Claims (10)
1. a kind of heat supply network draining system characterized by comprising heat exchangers for district heating, hydrophobic pipeline, the first low-pressure heater and remove
Oxygen device；Wherein, oxygen-eliminating device includes deaerator storage tank；
The heat exchangers for district heating is connected to by hydrophobic pipeline with the entrance of the first low-pressure heater, first low-pressure heater
Outlet is connected to deaerator storage tank.
2. heat supply network draining system according to claim 1, which is characterized in that be provided with regulating valve in the hydrophobic pipeline.
3. heat supply network draining system according to claim 2, which is characterized in that the hydrophobic pipeline is heated close to the heat supply network
The side of device is provided at least one drainage pump, and the entrance of the drainage pump is connected to the heat exchangers for district heating, the drainage pump
Outlet be connected to the entrance of first low-pressure heater.
4. heat supply network draining system according to claim 3, which is characterized in that it further include Ion exchange resin pipeline, it is described solidifying
Bearing water processing pipeline includes condenser, the first low-pressure heater, the second low-pressure heater, third low-pressure heater and the 4th low pressure
Heater, the condenser are connected to the 4th low-pressure heater, and the 4th low-pressure heater adds with the third low pressure
The connection of hot device, the third low-pressure heater are connected to first low-pressure heater, first low-pressure heater with it is described
The connection of second low-pressure heater, second low-pressure heater are connected to the deaerator storage tank.
5. heat supply network draining system according to claim 4, which is characterized in that the hydrophobic hydrophobic pressure of pump discharge is greater than institute
State third low-pressure heater outlet condensation water pressure.
6. heat supply network draining system according to claim 4, which is characterized in that first low-pressure heater, the second low pressure
Heater, third low-pressure heater and the 4th low-pressure heater respectively include entrance and exit, each low-pressure heater
Electrically operated valve is set at entrance and exit.
7. heat supply network draining system according to claim 3, which is characterized in that the regulating valve is wrapped close to the side of drainage pump
The first electrically operated valve is included, the regulating valve includes first manual valve close to the side of first low-pressure heater.
8. heat supply network draining system according to claim 7, which is characterized in that be additionally provided with bypass valve in the hydrophobic pipeline
Door, the two sides of the bypass valve are connected to first electrically operated valve close to the side of the drainage pump and described first
Manually-operated gate is close to the side of first low-pressure heater.
9. heat supply network draining system according to claim 3, which is characterized in that be additionally provided with flow in the hydrophobic pipeline
The side of outlet of the regulating valve close to the drainage pump is arranged in meter, the flowmeter.
10. heat supply network draining system according to claim 9, which is characterized in that be additionally provided with check in the hydrophobic pipeline
Valve, the second electrically operated valve and the second manually-operated gate, the reverse stop valve are arranged in the side of the hydrophobic pump discharge, and described
Two electrically operated valves are arranged between the reverse stop valve and the flowmeter, and second manually-operated gate is arranged in the drainage pump
The side of entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822081850.5U CN209263108U (en) | 2018-12-12 | 2018-12-12 | A kind of heat supply network draining system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822081850.5U CN209263108U (en) | 2018-12-12 | 2018-12-12 | A kind of heat supply network draining system |
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| CN209263108U true CN209263108U (en) | 2019-08-16 |
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ID=67562955
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| CN201822081850.5U Active CN209263108U (en) | 2018-12-12 | 2018-12-12 | A kind of heat supply network draining system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520001A (en) * | 2018-12-12 | 2019-03-26 | 沧州华润热电有限公司 | A kind of heat supply network draining system |
| CN110986022A (en) * | 2019-11-01 | 2020-04-10 | 中国能源建设集团广东省电力设计研究院有限公司 | Steam extraction heating heat supply drainage system |
| CN113188181A (en) * | 2021-03-29 | 2021-07-30 | 大唐七台河发电有限责任公司 | Heating drainage recovery device |
-
2018
- 2018-12-12 CN CN201822081850.5U patent/CN209263108U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520001A (en) * | 2018-12-12 | 2019-03-26 | 沧州华润热电有限公司 | A kind of heat supply network draining system |
| CN110986022A (en) * | 2019-11-01 | 2020-04-10 | 中国能源建设集团广东省电力设计研究院有限公司 | Steam extraction heating heat supply drainage system |
| CN113188181A (en) * | 2021-03-29 | 2021-07-30 | 大唐七台河发电有限责任公司 | Heating drainage recovery device |
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