CN206554986U - A kind of high back pressure steam discharge and the heating system being of coupled connections with heater of drawing gas - Google Patents
A kind of high back pressure steam discharge and the heating system being of coupled connections with heater of drawing gas Download PDFInfo
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- CN206554986U CN206554986U CN201720134457.0U CN201720134457U CN206554986U CN 206554986 U CN206554986 U CN 206554986U CN 201720134457 U CN201720134457 U CN 201720134457U CN 206554986 U CN206554986 U CN 206554986U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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Abstract
The utility model belongs to Direct Air-cooled Unit heat supply process field, and in particular to a kind of high back pressure steam discharge and the heating system being of coupled connections with heater of drawing gas.Including first-degree heating network heater, secondary heat networks heater, intermediate pressure cylinder, A gate valves, steam condenser, A grades of heaters, stop valve, B grades of heaters, low pressure (LP) cylinder, B gate valves, regulating valve, air cooling tubes condensers；The utility model has simple system, investment operating cost low, can realize that heat user obtains corresponding heat in any period of heating, and greatly reduce the coal consumption of steam power plant, has the advantages that good economy and environmental benefit.
Description
Technical field
The utility model belongs to Direct Air-cooled Unit heat supply process field, and in particular to a kind of high back pressure steam discharge and draw gas with
The heating system that heater is of coupled connections.
Background technology
People's life is had a strong impact on the decline and haze of quality of air environment, country is advocating cogeneration of heat and power system
System, to substitute scattered arcola and space-heating system, realizes the cascade utilization of energy, and realize the mesh of emission reduction atmosphere pollution
's.Current co-generation unit is the heating system that simple extraction for heat supply or high back pressure are connected with extraction for heat supply mostly.It is single
Pure extraction for heat supply so that the high-quality steam that power station can be used in generating electricity is significantly reduced, reduces turbine low pressure cylinder generated energy,
Although realizing cogeneration of heat and power, cost is larger.The heating system that high back pressure is connected with extraction for heat supply can effectively utilize vapour
The low-temperature receiver heat loss of turbine, but when carrying out series connection heating using extraction for heat supply so that the degree of superheat loss for energy part of drawing gas
It is larger, ultimately result in the loss of generated energy.Thus research and develop it is a kind of can effectively utilize steam turbine low-temperature receiver heat loss, again can
Utilize the degree of superheat of extracted steam from turbine, moreover it is possible to meet the heating system of heat user heat demand at any time, have great importance.
Utility model content
The purpose of this utility model is to be directed to the heating system commonly used in existing market：Extraction for heat supply can not effectively utilize height
The degree of superheat of quality steam, can not effectively utilize the low-temperature receiver heat loss of turbine discharge, fail to reach the cascade utilization of energy；
And high back pressure heat supply adds extraction for heat supply although to make use of exhausted spare heat, but degree of superheat loss is very big, causes energy loss
There is provided a kind of high back pressure steam discharge and the heating system being of coupled connections with heater of drawing gas for problem.
To solve the above problems, the technical solution adopted in the utility model is：A kind of high back pressure steam discharge and draw gas and heat
The heating system that device is of coupled connections, wherein：Including first-degree heating network heater, secondary heat networks heater, intermediate pressure cylinder, A gate valves, steam
Cooler, A grade heater, stop valve, B grades of heaters, low pressure (LP) cylinder, B gate valves, regulating valve, air cooling tubes condensers；The first-degree heating network
The water inlet of heater connects heat user water return outlet by heat supply pipeline, and the delivery port of first-degree heating network heater passes through heat supply pipeline
The water inlet of secondary heater is connected, the air intake of secondary heater connects the steam drain of low pressure (LP) cylinder, low pressure by blow-off line
The steam drain of cylinder connects the entrance of B grades of heaters by drain water piping；The B gate valves are located at low pressure (LP) cylinder and first-degree heating network heater
Between blow-off line on；The delivery port of the secondary heat networks heater is connected to heat user entrance, two grades by heat supply pipeline
Heat exchangers for district heating air intake connects the outlet of steam condenser by jet chimney, and the steam drain of secondary heat networks heater is by dredging
Waterpipe connects the entrance of A grades of heaters；The stop valve is located at the entrance of steam drain and A grade heater of secondary heat networks heater
Between drain water piping on；The air intake of the steam condenser connects the extraction opening of intermediate pressure cylinder by jet chimney, and steam is cold
But the water inlet of device connects the outlet of A grades of heaters by circulating water pipeline, and the delivery port of steam condenser passes through circulating water pipe
Road is connected to next stage heater；The A gate valves are located at taking out between the air intake of steam condenser and the extraction opening of intermediate pressure cylinder
On steam pipe road；The outlet of the B grades of heater is connected to the entrance of A grades of heaters by circulating water pipeline；The low pressure (LP) cylinder passes through
The steam drain connection of mesolow cross over pipe and intermediate pressure cylinder；The air cooling tubes condenser is connected by the steam drain of blow-off line and low pressure (LP) cylinder
Connect；The regulating valve is located on the blow-off line between the steam drain of low pressure (LP) cylinder and air cooling tubes condenser.
Further preferred embodiment, described first-degree heating network heater, secondary heat networks heater, steam condenser are all surfaces
Formula heater；The recirculated water energy figure and intermediate pressure cylinder of steam condenser quality of drawing gas are suitable；Secondary heat networks heater steam discharge is dredged
Water and A grades of heater recirculated water qualities are suitable；Low pressure (LP) cylinder exhaust temperature is between 68 DEG C -72 DEG C, and heat user return water temperature is 35
℃—40℃；The regulation of regulating valve, it is ensured that air cooling tubes condenser is not endured cold in the winter time；In heating period, low pressure (LP) cylinder exhaust pressure
28kpa -35kpa is brought up to, stable heat user can match in non-peak period heat with low pressure (LP) cylinder steam discharge energy.
Compared with prior art, the utility model has advantages below：
Firstth, the degree of superheat energy warms steam condenser that the utility model first draws gas intermediate pressure cylinder so that draw gas
The degree of superheat can be utilized effectively, increase energy utilization efficiency, unit coal consumption be reduced, while steam condenser can effectively reduce it
The utilization that its heater draws gas, increases generated energy indirectly.
Secondth, at heating initial stage and heating latter stage, by closing A gate valves and stop valve, low pressure (LP) cylinder exhaust pressure, energy are improved
Enough meet the heating demands of heat user, it is not necessary to drawn gas energy using intermediate pressure cylinder so that the acting ability of intermediate pressure cylinder is greatly increased.
Meanwhile, because air cooling tubes condenser is not run or underrun so that air cooling blower fan not power consumption, save a large amount of station-service electricity.
3rd, in heating peak period, by opening A gate valves and stop valve, the heating needs of heat user be disclosure satisfy that so that
Energy obtains cascade utilization, and energy utilization, which is realized, to be maximized.
Therefore, the utility model has simple system, investment operating cost low, and heat user can be realized in any of heating
Period obtains corresponding heat, and greatly reduces the coal consumption of steam power plant, has the advantages that good economy and environmental benefit.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in figure 1, a kind of high back pressure steam discharge of the present embodiment and the heating system being of coupled connections with heater of drawing gas, its
In：Including first-degree heating network heater 1, secondary heat networks heater 2, intermediate pressure cylinder 3, A gate valves 4, steam condenser 5, A grades of heaters 6,
Stop valve 7, B grade heater 8, low pressure (LP) cylinder 9, B gate valves 10, regulating valve 11, air cooling tubes condenser 12；The first-degree heating network heater 1
Water inlet heat user water return outlet is connected by heat supply pipeline, the delivery port of first-degree heating network heater 1 connected by heat supply pipeline
The water inlet of secondary heater 2, the air intake of secondary heater 2 connects the steam drain of low pressure (LP) cylinder 9, low pressure (LP) cylinder by blow-off line
9 steam drain connects the entrance of B grades of heaters 8 by drain water piping；The B gate valves 10 are located at low pressure (LP) cylinder 9 and first-degree heating network adds
On blow-off line between hot device 1；The delivery port of the secondary heat networks heater 2 is connected to heat user by heat supply pipeline and entered
Mouthful, the air intake of secondary heat networks heater 2 connects the outlet of steam condenser 5, the row of secondary heat networks heater 2 by jet chimney
Steam ports connects the entrance of A grades of heaters 6 by drain water piping；The stop valve 7 is located at the steam drain and A of secondary heat networks heater 2
On drain water piping between the entrance of level heater 6；The air intake of the steam condenser 5 connects intermediate pressure cylinder by jet chimney
3 extraction opening, the water inlet of steam condenser 5 connects the outlet of A grades of heaters 6 by circulating water pipeline, steam condenser 5
Delivery port is connected to next stage heater by circulating water pipeline；The A gate valves 4 are located at the air intake of steam condenser 5 with
On extraction line between the extraction opening of cylinder pressure 3；The outlet of the B grades of heater 8 is connected to A grades of heaters by circulating water pipeline
6 entrance；The low pressure (LP) cylinder 9 is connected by mesolow cross over pipe with the steam drain of intermediate pressure cylinder 3；The air cooling tubes condenser 12 passes through
Blow-off line is connected with the steam drain of low pressure (LP) cylinder 9；The regulating valve 11 be located at the steam drain of low pressure (LP) cylinder 9 and air cooling tubes condenser 12 it
Between blow-off line on.
First-degree heating network heater, secondary heat networks heater, steam condenser described in the present embodiment are all that surface-type adds
Hot device；The recirculated water energy figure and intermediate pressure cylinder of steam condenser quality of drawing gas are suitable；Secondary heat networks heater steam discharge is hydrophobic and A
Level heater recirculated water quality is suitable；Low pressure (LP) cylinder exhaust temperature between 68 DEG C -72 DEG C, heat user return water temperature 35 DEG C -
40℃；The regulation of regulating valve, it is ensured that air cooling tubes condenser is not endured cold in the winter time；In heating period, low pressure (LP) cylinder exhaust pressure is improved
To 28kpa -35kpa, stable heat user can match in non-peak period heat with low pressure (LP) cylinder steam discharge energy.
Stable heat user is needed in the present embodiment, in heating initial stage and latter stage, A gate valves 10 are opened, close B gate valves 4,
Stop valve 7, adjusts the aperture of regulating valve 11, the exhaust pressure of low pressure (LP) cylinder 9 is improved, to heat the heat user of primary heater 1
Recirculated water, the hydrophobic entrance B grades of heaters 8 of the steam discharge of primary heater 1.In heating peak period, the unlatching of gate valve B gate valves 10 is kept,
A gate valves 4 and stop valve 7 are opened simultaneously, and drawing gas for intermediate pressure cylinder 3 utilizes the degree of superheat drawn gas by steam condenser 5 first, then passes through
Cross secondary heat networks heater 2 to heat heat supply network recirculated water to assigned temperature, hydrophobic entrance A grades of the steam discharge of secondary heat networks heater 2 adds
Hot device 6.The heating demands of heat user can be flexibly met in whole system, while so that the energy of power plant obtains cascade utilization.
Non-heating period, regulating valve is opened, and closes B gate valves 10, A gate valves 4 and stop valve 7 so that unit is in normal generating state
Lower operation.
Claims (4)
1. a kind of high back pressure steam discharge and the heating system being of coupled connections with heater of drawing gas, it is characterized in that：Including first-degree heating network plus
Hot device (1), secondary heat networks heater (2), intermediate pressure cylinder (3), A gate valves (4), steam condenser (5), A grades of heaters (6), cut-offs
Valve (7), B grades of heaters (8), low pressure (LP) cylinder (9), B gate valves (10), regulating valve (11), air cooling tubes condensers (12)；The first-degree heating network
The water inlet of heater (1) connects heat user water return outlet by heat supply pipeline, and the delivery port of first-degree heating network heater (1) is by supplying
The water inlet of hot channel connection secondary heater (2), the air intake of secondary heater (2) connects low pressure (LP) cylinder by blow-off line
(9) steam drain, the steam drain of low pressure (LP) cylinder (9) connects the entrance of B grades of heaters (8) by drain water piping；The B gate valves (10)
It is located on the blow-off line between low pressure (LP) cylinder (9) and first-degree heating network heater (1)；The water outlet of the secondary heat networks heater (2)
Mouth is connected to heat user entrance by heat supply pipeline, and it is cold that secondary heat networks heater (2) air intake connects steam by jet chimney
But the outlet of device (5), the steam drain of secondary heat networks heater (2) connects the entrance of A grades of heaters (6) by drain water piping；It is described
Stop valve (7) is located on the drain water piping between the entrance of the steam drain of secondary heat networks heater (2) and A grades of heaters (6)；Institute
The air intake for stating steam condenser (5) connects the extraction opening of intermediate pressure cylinder (3), the water inlet of steam condenser (5) by jet chimney
Mouth connects the outlet of A grades of heaters (6) by circulating water pipeline, and the delivery port of steam condenser (5) is connected by circulating water pipeline
It is connected to next stage heater；The A gate valves (4) are located between the extraction opening of the air intake of steam condenser (5) and intermediate pressure cylinder (3)
Extraction line on；The outlet of the B grades of heater (8) is connected to the entrance of A grades of heaters (6) by circulating water pipeline；It is described
Low pressure (LP) cylinder (9) is connected by mesolow cross over pipe with the steam drain of intermediate pressure cylinder (3)；The air cooling tubes condenser (12) passes through gland steam exhauster
Road is connected with the steam drain of low pressure (LP) cylinder (9)；The regulating valve (11) is located at the steam drain and air cooling tubes condenser (12) of low pressure (LP) cylinder (9)
Between blow-off line on.
2. a kind of high back pressure steam discharge according to claim 1 and the heating system being of coupled connections with heater of drawing gas, it is special
Levying is：Described first-degree heating network heater (1), secondary heat networks heater (2), steam condenser (5) are all surface heaters.
3. a kind of high back pressure steam discharge according to claim 1 and the heating system being of coupled connections with heater of drawing gas, it is special
Levying is：The recirculated water energy figure and intermediate pressure cylinder of described steam condenser (5) quality of drawing gas are suitable；Secondary heat networks heater
(2) steam discharge is hydrophobic suitable with A grades of heater (6) recirculated water qualities.
4. a kind of high back pressure steam discharge according to claim 1 and the heating system being of coupled connections with heater of drawing gas, it is special
Levying is：Described low pressure (LP) cylinder (9) exhaust temperature is between 68 DEG C -72 DEG C, and heat user return water temperature is at 35 DEG C -40 DEG C；Regulation
The regulation of valve, to ensure that air cooling tubes condenser is not endured cold in the winter time；In heating period, low pressure (LP) cylinder exhaust pressure bring up to 28kpa-
35kpa, stable heat user can match in non-peak period heat with low pressure (LP) cylinder steam discharge energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720134457.0U CN206554986U (en) | 2017-02-15 | 2017-02-15 | A kind of high back pressure steam discharge and the heating system being of coupled connections with heater of drawing gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720134457.0U CN206554986U (en) | 2017-02-15 | 2017-02-15 | A kind of high back pressure steam discharge and the heating system being of coupled connections with heater of drawing gas |
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| Publication Number | Publication Date |
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| CN206554986U true CN206554986U (en) | 2017-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720134457.0U Active CN206554986U (en) | 2017-02-15 | 2017-02-15 | A kind of high back pressure steam discharge and the heating system being of coupled connections with heater of drawing gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592136A (en) * | 2018-07-13 | 2018-09-28 | 大连亨利测控仪表工程有限公司 | A kind of thermal power plant's flexibility transformation twin-tub decoupling depth peak regulation system |
-
2017
- 2017-02-15 CN CN201720134457.0U patent/CN206554986U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592136A (en) * | 2018-07-13 | 2018-09-28 | 大连亨利测控仪表工程有限公司 | A kind of thermal power plant's flexibility transformation twin-tub decoupling depth peak regulation system |
| CN108592136B (en) * | 2018-07-13 | 2023-10-31 | 大连亨利测控仪表工程有限公司 | Double-cylinder decoupling depth peak shaving system for thermal power plant flexible transformation |
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