CN206903696U - Varying duty thermal power plant heating energy-saving structure - Google Patents
Varying duty thermal power plant heating energy-saving structure Download PDFInfo
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- CN206903696U CN206903696U CN201720396837.1U CN201720396837U CN206903696U CN 206903696 U CN206903696 U CN 206903696U CN 201720396837 U CN201720396837 U CN 201720396837U CN 206903696 U CN206903696 U CN 206903696U
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Abstract
The utility model provides a kind of varying duty thermal power plant heating energy-saving structure, reasonable in design, dependable performance, is advantageous to improve steam power plant's comprehensive energy utilization ratio.High heat extraction end extraction line steam output end is connected with small steam turbine admission end；Height row's cold end extraction line is connected with steam turbine high-pressure cylinder exhaust steam end and high heat extraction end extraction line；Height row's bypass is connected with high heat extraction end extraction line and pressure matcher high-pressure admission end；No. eight valves are installed on pressure matcher high-pressure admission end, ride on Bus No. 11 valve is installed on low pressure admission end, No. nine valves are installed on steam output end；No. six valves are installed on small steam turbine exhaust steam end, No. five valves are installed on admission end；Middle row's extraction line steam output end is connected with pressure matcher low pressure admission end；Middle row's bypass is connected with middle row's extraction line steam output end and industrial header vapor respectively；Steam discharge bypass arranges bypass steam output end with height respectively and industrial header vapor is connected；Pressure matcher steam output end is connected with industrial header vapor；Valve is installed on each pipeline.
Description
Technical field
The utility model is related to a kind of varying duty thermal power plant heating energy-saving structure, be particularly suitable for use in unit load with it is outer
The steam power plant of the industrial heating of boundary's load variations.
Background technology
At present, the steam power plant of extraction steam for factories central heating is had been carried out early stage for China, because heat supply process is simply thick
Put, energy loss is serious so that the comprehensive energy utilization ratio of steam power plant can not be improved further, and many has carried out industrial confession
The steam power plant of heat does not realize profit, or even situation about losing occurs.The main reason for causing this phenomenon is unit reality
Border operating condition deviates unit design operating mode so that because restriction loss is serious during extraction steam for factories, so as to cause energy tight
Lose again, so that steam power plant can not realize profit.Existing technology, such as entitled a kind of varying duty thermal power plant heat supply
The Chinese utility model patent of energy conserving system, Patent No. 201620138236.6, solves extraction steam for factories to a certain extent
The problem of restriction loss is serious, but following problem be present in the technology：1）During performing low-load running of machine set, carry out high row and draw gas
When have certain influence on unit safety；2）When high heat extraction end is drawn gas, the warp of decrease temperature and pressure is carried out using reducing-and-cooling plant
Ji benefit unobvious；3）Do not determine that industrial heating draws gas the method for port optimum choice, so as to be not implemented in practical operation
Reach maximum energy-saving effect.
Therefore, how under unit actual operating mode, effectively realize that steam power plant externally carries out industrial heating, especially
It is in the case where unit operation operating mode is changeable and extraneous thermic load is changeable, on the premise of unit safety is ensured, realizes high
The industrial heating system and method for effect, energy-conservation, makes a profit instead of suffering a loss to steam power plant and serves vital effect.
Utility model content
The purpose of this utility model is to overcome above shortcomings in the prior art, and provide it is a kind of it is reasonable in design,
Dependable performance, the varying duty thermal power plant heating energy-saving structure for being advantageous to improve steam power plant's comprehensive energy utilization ratio.
The technical scheme in the invention for solving the above technical problem is：A kind of varying duty thermal power plant heating energy-saving
Structure, including boiler, steam turbine high-pressure cylinder, Steam Turbine Through IP Admission, No.1 valve, No. three valves, middle row's extraction line, industry confession
Vapour main pipe, boiler reheated steam pipe and high heat extraction end extraction line；Boiler connects with steam turbine high-pressure cylinder；Steam turbine high-pressure cylinder and
Steam Turbine Through IP Admission is connected by boiler reheated steam pipe；The admission end of high heat extraction end extraction line and boiler reheated steam Guan Lian
Connect, No. three valves are installed on the extraction line of high heat extraction end；The admission end of middle row's extraction line and taking out for Steam Turbine Through IP Admission
Vapour end is connected, and No.1 valve is provided with middle row's extraction line；It is characterized in that：Also include small steam turbine, high row's cold end extraction steam pipe
Road, high row's bypass, middle row bypass, steam discharge bypass, pressure matcher, No. two valves, No. four valves, No. five valves, No. six valves,
No. seven valves, No. eight valves, No. nine valves, No. ten valves and ride on Bus No. 11 valve；The steam output end of high heat extraction end extraction line with it is small
The admission end connection of steam turbine；The exhaust steam end of height row cold end extraction line one end and steam turbine high-pressure cylinder is connected, and the other end is arranged with high
Hot junction extraction line connection；No. two valves are installed on height row's cold end extraction line；The admission end of height row's bypass and high heat extraction
Hold extraction line connection, the high-pressure admission end connection of steam output end and pressure matcher；No. four valves are installed in height row's bypass；Pressure
No. eight valves are installed on the high-pressure admission end of power adaptation, ride on Bus No. 11 valve is installed on low pressure admission end, pacified on steam output end
Equipped with No. nine valves；No. six valves are installed on the exhaust steam end of small steam turbine, No. five valves are installed on admission end；Middle row's extraction steam pipe
The steam output end in road and the low pressure admission end of pressure matcher connect；Middle row bypasses one end and the steam output end of middle row's extraction line connects
Connect, the other end is connected with industrial header vapor；No. seven valves are installed in middle row's bypass；Steam discharge bypasses one end and high row's bypass
Steam output end is connected, and the other end is connected with industrial header vapor；No. ten valves are installed in steam discharge bypass；Pressure matcher goes out vapour
End is connected with industrial header vapor.
The utility model also includes station-service power equipment, and small steam turbine is connected with station-service power equipment.
Rotating barrier is housed on the port of drawing gas of Steam Turbine Through IP Admission described in the utility model.
The exhaust steam end of small steam turbine described in the utility model is connected with the steam output end of high row's bypass.
The utility model compared with prior art, has advantages below and effect：（1）It is reasonable in design, simple in construction, performance
Reliably, energy principle is used based on " temperature counterpart, cascade utilization ", rationally designs extraction steam for factories port.（2）Unit can be according to reality
The change of border operating condition, i.e. unit load and external load, reasonable selection extraction steam for factories port, avoids causing energy loss.
（3）When the high row of performing low-load running of machine set progress draws gas, the method for optimum choice progress small turbine drive acting, further raising
Energy-saving effect.（4）In performing low-load running of machine set, by determining adjusting method, the security of unit operation is improved.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment varying duty thermal power plant heating energy-saving structure.
Embodiment
Below in conjunction with the accompanying drawings and the utility model is described in further detail by embodiment.
Referring to Fig. 1, a kind of varying duty thermal power plant heating energy-saving structure includes boiler 1, steam turbine high-pressure cylinder 2, steamer
Machine intermediate pressure cylinder 3, rotating barrier 4, No.1 valve 5,6, No. two valves 7 of middle row's extraction line, high row's cold end extraction line 8, boiler
It is reheated steam pipe 9, the valve 11, four of high heat extraction end extraction line 10, three valve 12,13, No. five valves 14 of high row's bypass, small
Steam turbine 15, No. six valves 16, station-service power equipment 17, industrial header vapor 18, turbine low pressure cylinder 19, condenser 20, middle rows
Bypass 22, No. seven valves 23, the valve 25, nine of pressure matcher 24, eight valve 26, steam discharge and bypass 27, No. ten and of valve 28
Ride on Bus No. 11 valve 29.
Boiler 1 and steam turbine high-pressure cylinder 2 connect.
Steam turbine high-pressure cylinder 2 and Steam Turbine Through IP Admission 3 are connected by boiler reheated steam pipe 9.
Steam Turbine Through IP Admission 3 and turbine low pressure cylinder 19 connect.
Turbine low pressure cylinder 19, condenser 20, condensate pump 21 are sequentially connected.
Small steam turbine 15 is connected with station-service power equipment 17, power is provided for station-service power equipment 17, for driving comprising solidifying
Bear water the station-service power equipment 17 including pump 21.
Rotating barrier 4 is housed on the port of drawing gas of Steam Turbine Through IP Admission 3.
The admission end of high heat extraction end extraction line 10 is connected with boiler reheated steam pipe 9, and steam output end enters with small steam turbine 15
Vapour end connects.No. three valves 11 are installed on high heat extraction end extraction line 10.
The one end of height row's cold end extraction line 8 is connected with the exhaust steam end of steam turbine high-pressure cylinder 2, and the other end draws gas with high heat extraction end
Pipeline 10 connects.No. two valves 7 are installed on height row's cold end extraction line 8.
The admission end of height row bypass 13 is connected with high heat extraction end extraction line 10, the high pressure of steam output end and pressure matcher 24
Admission end connects.No. four valves 12 are installed in height row bypass 13.
The exhaust steam end of small steam turbine 15 is connected with the steam output end of high row's bypass 13.
No. eight valves 25 are installed on the high-pressure admission end of pressure matcher 24, ride on Bus No. 11 valve is installed on low pressure admission end
Door 29, No. nine valves 26 are installed on steam output end.
No. six valves 16 are installed on the exhaust steam end of small steam turbine 15, No. five valves 14 are installed on admission end.
The admission end of middle row's extraction line 6 and draw gas end connection, steam output end and the pressure matcher 24 of Steam Turbine Through IP Admission 3
Low pressure admission end connection.No.1 valve 5 is installed on middle row's extraction line 6.
Middle row bypasses 22 one end and is connected with the steam output end of middle row's extraction line 6, and the other end is connected with industrial header vapor 18.
No. seven valves 23 are installed in middle row's bypass 22.
Steam discharge bypasses 27 one end and is connected with the steam output end of high row's bypass 13, and the other end is connected with industrial header vapor 18.Row
No. ten valves 28 are installed in vapour bypass 27.
The steam output end of pressure matcher 24 is connected with industrial header vapor 18, and steam is supplied industry by industrial header vapor 18
User.
Above-mentioned all valves are respectively provided with regulation, block the function of being transmitted with signal, can be entered according to the demand of industrial user
Row Real-time Feedback and regulation, so as to realize the real-time regulation between Power Plant Side and user side, were reduced for loss.
A kind of adjusting method of varying duty thermal power plant heating energy-saving structure, if unit electric load rate P has a spy
Definite value is N, and particular value N meets：When P is gradually decrease to N by 100%, the extraction pressure parameter of middle row's extraction line 6 can not expire
Needed for sufficient industrial user.It is H and K that if industrial user's demand thermic load Q, which has two particular values, and 0 ＜ H ＜ K, particular value H and K
Meet：1）As Q ＞ H, drawing gas for cold end extraction line 8 is arranged using only middle row's extraction line 6 or height, industry can not be met
User's request；2）Extraction line 6 is arranged as Q ＞ K, while in utilizing and height arranges drawing gas for cold end extraction line 8, can not meet work
Industry user's request.
Its adjusting method is as follows：
（One）, when unit electric load rate P meet 100% >=P ＞ N when：
（1）If, Q≤H when, have situations below：
A, 7, No. three valves 11 of No. two valves are closed, opens and adjusts No.1 valve 5, extraction line 6 is arranged in use and is carried out
Draw gas, close ride on Bus No. 11 valve 29, open No. seven valves 23, drawing gas for middle row's extraction line 6 is delivered to by middle row bypass 22
Industrial header vapor 18, to meet industrial user's demand；
B, No.1 valve 5 and No. three valves 11 are closed, opens and adjusts No. two valves 7, use height row's cold end extraction line 8
Drawn gas, close 12, No. eight valves 25 of No. four valves and No. nine valves 26, open 14, No. six valves 16 and ten of No. five valves
Number valve 28, the drawing gas of height row's cold end extraction steam pipe 8 are introduced into after small steam turbine 15 does work, then are delivered to industry by steam discharge bypass 27
Header vapor 18, to meet industrial user's demand；
（2）If, H ＜ Q≤K when, close No. three valves 11, standard-sized sheet No.1 valve 5, open and adjust No. two valves 7, use
Middle row's extraction line 6 and high row's cold end extraction line 8 are drawn gas, to meet industrial user's demand：Now, ride on Bus No. 11 valve is closed
Door 29, opens No. seven valves 23, and drawing gas for middle row's extraction line 6 is delivered to industrial header vapor 18 by middle row bypass 22；This
When, No. four valves 26 of valve 25, nine of valve 12, eight are closed, open No. five valves 28 of valve 16, ten of valve 14, six,
The drawing gas of height row cold end extraction steam pipe 8 is introduced into after small steam turbine 15 does work, then is delivered to industrial header vapor by steam discharge bypass 27
18。
（3）If, Q ＞ K when, standard-sized sheet No.1 valve 5, open and adjust No. two valves 7 and No. three valves 11, in use row take out
Steam pipe road 6, high row's cold end extraction line 8 and high heat extraction end extraction line 10 are drawn gas, to meet industrial user's demand：This
When, ride on Bus No. 11 valve 29 is closed, opens No. seven valves 23, drawing gas for middle row's extraction line 6 is delivered to work by middle row bypass 22
Industry header vapor 18；Now, No. four valves 26 of valve 25, nine of valve 12, eight are closed, open 14, No. six valves of No. five valves
After the first mixing of drawing gas of 16, No. ten valves 28 of door, height row's cold end extraction line 8 and high heat extraction end extraction line 10, enter back into small
Steam turbine 15 does work, and is then delivered to industrial header vapor 18 by steam discharge bypass 27.
（Two）, when unit electric load rate P meets N >=P ＞ 0：
（1）If, Q≤H when, have situations below：
A, No.1 valve 5 and No. three valves 11 are closed, opens and adjusts No. two valves 7, use height row's cold end extraction line 8
Drawn gas, to meet industrial user's demand：Now, No. four 26, No. seven valves of valve of valve 25, nine of valve 12, eight are closed
Door 23, ride on Bus No. 11 valve 29, open No. five valves 28 of valve 16, ten of valve 14, six, and height row's cold end extraction line 8 is taken out
Vapour is introduced into small steam turbine 15 and done work, and is then delivered to industrial header vapor 18 by steam discharge bypass 27.
B, No.1 valve 5 and No. two valves 7 are closed, opens and adjusts No. three valves 11, use high heat extraction end extraction line
10 are drawn gas to meet industrial user's demand：Close No. four 26, No. seven valves 23 of valve of valve 25, nine of valve 12, eight
With ride on Bus No. 11 valve 29, open 14, No. six valves 16 of No. five valves and No. ten valves 28, high heat extraction end extraction line 10 draw gas
It is introduced into small steam turbine 15 to do work, is then delivered to industrial header vapor 18 by steam discharge bypass 28.
C, No. three valves 11 are closed, opens and adjusts 5, No. two valves 7 of No.1 valve, use height row's cold end extraction line 8
Drawn gas with middle row's extraction line 6, to meet industrial user's demand：Now, 14, No. six valves 16, ten of No. five valves are closed
Number 28, No. seven valves 23 of valve, open No. four valves 12, eight valve 25, nine valve 26, ride on Bus No. 11 valves 29, Gao Paileng
Drawing gas for end extraction line 8 enters pressure matcher 24 through too high row bypass 13, and drawing gas for middle row's extraction line 6 is directly entered pressure
Power adaptation 24, both draw gas after mixing matching, then are delivered to industrial header vapor 18.
D, No. two valves 7 are closed, opens and adjusts 5, No. three valves 11 of No.1 valve, use high heat extraction end extraction line 10
Drawn gas with middle row's extraction line 6, to meet industrial user's demand：Now, 14, No. six valves 16, ten of No. five valves are closed
Number 28, No. seven valves 23 of valve, open No. four valves 12, eight valve 25, nine valve 26, ride on Bus No. 11 valves 29, high heat extraction
Drawing gas for end extraction line 10 enters pressure matcher 24 through too high row bypass 13, and middle drawing gas for row's extraction line 6 is directly entered
Pressure matcher 24, both draw gas after mixing matching, then are delivered to industrial header vapor 18.
（2）If, H ＜ Q≤K when, have situations below：
A, No. three valves 11 are closed, opens and adjusts 5, No. two valves 7 of No.1 valve, use height row's cold end extraction line 8
Drawn gas with middle row's extraction line 6, to meet industrial user's demand：Now, 14, No. six valves 16, ten of No. five valves are closed
Number 28, No. seven valves 23 of valve, open No. four valves 12, eight valve 25, nine valve 26, ride on Bus No. 11 valves 29, Gao Paileng
Drawing gas for end extraction line 8 enters pressure matcher 24 through too high row bypass 13, and drawing gas for middle row's extraction line 6 is directly entered pressure
Power adaptation 24, both draw gas after mixing matching, then are delivered to industrial header vapor 18.
B, No. two valves 7 are closed, opens and adjusts 5, No. three valves 11 of No.1 valve, use high heat extraction end extraction line 10
Drawn gas with middle row's extraction line 6, to meet industrial user's demand：Now, 14, No. six valves 16, ten of No. five valves are closed
Number 28, No. seven valves 23 of valve, open No. four valves 12, eight valve 25, nine valve 26, ride on Bus No. 11 valves 29, high heat extraction
Drawing gas for end extraction line 10 enters pressure matcher 24 through too high row bypass 13, and middle drawing gas for row's extraction line 6 is directly entered
Pressure matcher 24, both draw gas after mixing matching, then are delivered to industrial header vapor 18.
C, No.1 valve 5 is closed, opens and adjusts No. two valves 7 and No. three valves 11, use high heat extraction end extraction line
10 are drawn gas with high row's cold end extraction line 8, to meet industrial user's demand：Now, 12, No. eight valves of No. four valves are closed
25th, 29, No. seven No. nine valves 26, ride on Bus No. 11 valve valves 23, No. five valves 28 of valve 16, ten of valve 14, six are opened, it is high
After the first mixing of drawing gas of row's cold end extraction line 8 and high heat extraction end extraction line 10, enter back into small steam turbine 15 and do work, then pass through
Steam discharge bypass 27 is delivered to industrial header vapor 18.
（3）If, Q ＞ K when, open and adjust the valve 11 of valve 7, three of No.1 valve 5, two, extraction steam pipe is arranged in use
Road 6, high row's cold end extraction line 8 and high heat extraction end extraction line 10 are drawn gas, to meet industrial user's demand：Now, close
No. five 28, No. seven valves 23 of valve of valve 16, ten of valve 14, six are closed, open No. four valves 25, nine of valve 12, eight
After the first mixing of drawing gas of valve 26, ride on Bus No. 11 valve 29, height row's cold end extraction line 8 and high heat extraction end extraction line 10, then pass through
Too high row's bypass 13 enters pressure matcher 24, and drawing gas for middle row's extraction line 6 is directly entered pressure matcher 24, and three draws gas
After mixing matching, then it is delivered to industrial header vapor 18.
In the present embodiment, adjusting method is chosen for：Extraction line 6 is arranged in prioritizing selection to be drawn gas, and is secondly selected
Height row's cold end extraction line 8 is drawn gas, and finally selects high heat extraction end extraction line 10 to be drawn gas.
In the present embodiment, adjusting method is chosen for：Prioritizing selection utilizes small steam turbine 15, secondly Selection utilization pressure
Orchestration 24.
Above content described in this specification is only to the utility model structure example explanation；Moreover,
The title that the utility model each several part is taken can also be different, it is all according to the utility model patent conceive described construction, feature and
The equivalent or simple change that principle is done, is included in the protection domain of the utility model patent.
Claims (4)
1. a kind of varying duty thermal power plant heating energy-saving structure, including boiler, steam turbine high-pressure cylinder, Steam Turbine Through IP Admission, one
Number valve, No. three valves, middle row's extraction line, industrial header vapor, boiler reheated steam pipe and high heat extraction end extraction line；Pot
Stove connects with steam turbine high-pressure cylinder；Steam turbine high-pressure cylinder is connected with Steam Turbine Through IP Admission by boiler reheated steam pipe；High heat extraction
The admission end of end extraction line is connected with boiler reheated steam pipe, and No. three valves are provided with the extraction line of high heat extraction end；In
The admission end of extraction line and the end connection of drawing gas of Steam Turbine Through IP Admission are arranged, No.1 valve is installed on middle row's extraction line；Its
It is characterised by：Also include small steam turbine, high row's cold end extraction line, high row's bypass, middle row bypass, steam discharge bypass, pressure matcher,
No. two valves, No. four valves, No. five valves, No. six valves, No. seven valves, No. eight valves, No. nine valves, No. ten valves and 11
Number valve；The steam output end of high heat extraction end extraction line is connected with the admission end of small steam turbine；Height row cold end extraction line one end and vapour
The exhaust steam end connection of turbine high pressure cylinder, the other end are connected with high heat extraction end extraction line；Installed on height row's cold end extraction line
There are No. two valves；The admission end of height row's bypass is connected with high heat extraction end extraction line, and the height of steam output end and pressure matcher is pressed into
Vapour end connects；No. four valves are installed in height row's bypass；No. eight valves, low pressure are installed on the high-pressure admission end of pressure matcher
Ride on Bus No. 11 valve is installed on admission end, No. nine valves are installed on steam output end；No. six valves are installed on the exhaust steam end of small steam turbine
, No. five valves are installed on admission end；The steam output end of middle row's extraction line and the low pressure admission end of pressure matcher connect；In
Row's bypass one end is connected with the steam output end of middle row's extraction line, and the other end is connected with industrial header vapor；Installed in middle row's bypass
There are No. seven valves；Steam discharge bypasses one end and is connected with the steam output end of high row's bypass, and the other end is connected with industrial header vapor；By steam discharge
No. ten valves are installed on road；The steam output end of pressure matcher is connected with industrial header vapor.
2. varying duty thermal power plant heating energy-saving structure according to claim 1, it is characterised in that：Also moved including station-service
Power equipment, small steam turbine are connected with station-service power equipment.
3. varying duty thermal power plant heating energy-saving structure according to claim 1, it is characterised in that：Described steam turbine
Rotating barrier is housed on the port of drawing gas of intermediate pressure cylinder.
4. varying duty thermal power plant heating energy-saving structure according to claim 1, it is characterised in that：Described small steam turbine
Exhaust steam end be connected with the steam output end of high row's bypass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720396837.1U CN206903696U (en) | 2017-04-17 | 2017-04-17 | Varying duty thermal power plant heating energy-saving structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720396837.1U CN206903696U (en) | 2017-04-17 | 2017-04-17 | Varying duty thermal power plant heating energy-saving structure |
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| CN206903696U true CN206903696U (en) | 2018-01-19 |
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ID=61290707
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826681A (en) * | 2019-02-02 | 2019-05-31 | 华电电力科学研究院有限公司 | A kind of the industrial heating system and its operation method integrated for Combined cycle gas-steam turbine unit steam extraction |
-
2017
- 2017-04-17 CN CN201720396837.1U patent/CN206903696U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826681A (en) * | 2019-02-02 | 2019-05-31 | 华电电力科学研究院有限公司 | A kind of the industrial heating system and its operation method integrated for Combined cycle gas-steam turbine unit steam extraction |
| CN109826681B (en) * | 2019-02-02 | 2023-09-08 | 华电电力科学研究院有限公司 | Industrial heating system for gas-steam combined cycle unit steam extraction integration and operation method thereof |
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