CN210373653U - Cogeneration heating integrated system based on user parameters - Google Patents
Cogeneration heating integrated system based on user parameters Download PDFInfo
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- CN210373653U CN210373653U CN201920347882.7U CN201920347882U CN210373653U CN 210373653 U CN210373653 U CN 210373653U CN 201920347882 U CN201920347882 U CN 201920347882U CN 210373653 U CN210373653 U CN 210373653U
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Abstract
The utility model relates to a combined heat and power generation heat supply integrated system based on user's parameter belongs to the combined heat and power generation field. The system comprises a boiler, a turbine high-pressure cylinder, a turbine intermediate-pressure cylinder, a turbine low-pressure cylinder, a first temperature and pressure reducer, a pressure matcher, a second temperature and pressure reducer, a condenser and a condensate pump; the steam outlet end of the steam extraction pipeline at the high heat exhaust end is connected with the steam inlet end of the first temperature and pressure reducing device; the high-exhaust bypass is connected with the high-exhaust steam extraction pipeline and the high-pressure steam inlet end of the pressure adapter; the steam outlet end of the pressure matcher is connected with an industrial steam supply main pipe; one end of the steam exhaust bypass is connected with the steam outlet end of the high steam exhaust bypass, and the other end of the steam exhaust bypass is connected with the industrial steam supply main pipe; the steam outlet end of the middle exhaust steam extraction pipeline is divided into two paths, one path is connected with the low-pressure steam inlet end of the pressure adapter, and the other path is connected with the steam inlet end of the second temperature and pressure reducing device; the steam outlet end of the second temperature and pressure reducing device is connected with an industrial steam supply main pipe. The utility model relates to a rationally, the dependable performance, be favorable to improving the heat supply quality of steam power plant.
Description
Technical Field
The utility model relates to a combined heat and power generation heat supply integrated system based on user's parameter mainly is applicable to the industry heat supply steam power plant of unit variable working condition operation, belongs to the combined heat and power generation field.
Background
The heat power plant which realizes industrial steam extraction centralized heat supply in early China has the advantages that the heat supply technology is simple and extensive, the energy loss is serious, the comprehensive energy utilization efficiency of the heat power plant cannot be further improved, and the profit and the loss of many heat power plants which perform industrial heat supply are not realized. Aiming at the phenomenon, a plurality of research achievements exist, and the high-efficiency and energy-saving operation of the unit can be realized under the conditions that the operation working condition of the unit is changeable and the external heat load is changeable. However, at present, no combined heat and power generation heating integrated system which is reasonable in design, reliable in performance and based on user parameters and considers the heating quality does not exist. Therefore, how to improve the industrial heat supply quality of the unit based on the user parameters and the parameters of the air extraction opening when the unit operates under variable working conditions and on the premise of ensuring the safe operation of the unit has great significance for the development of the cogeneration enterprises.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a structural design is reasonable, the dependable performance, be favorable to improving the combined energy utilization efficiency of steam power plant, improve the combined heat and power heat supply integrated system based on user's parameter simultaneously of heat supply quality.
The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides a combined heat and power generation heating integrated system based on user's parameter which characterized in that: the system comprises a boiler, a turbine high-pressure cylinder, a turbine intermediate-pressure cylinder, a turbine low-pressure cylinder, a first temperature and pressure reducer, a pressure matcher, a second temperature and pressure reducer, a condenser and a condensate pump; the boiler is connected with a high-pressure cylinder of the steam turbine, the high-pressure cylinder of the steam turbine is connected with a medium-pressure cylinder of the steam turbine through a reheating steam pipe of the boiler, the medium-pressure cylinder of the steam turbine is connected with a low-pressure cylinder of the steam turbine, and the low-pressure cylinder of the steam turbine, the condenser and the condensate pump are sequentially connected; the steam inlet end of the high heat extraction end steam extraction pipeline is connected with a boiler reheating steam pipe, the steam outlet end of the high heat extraction end steam extraction pipeline is connected with the steam inlet end of the first temperature and pressure reducing device, and a second valve is arranged on the high heat extraction end steam extraction pipeline; a third valve is arranged at the steam inlet end of the first temperature and pressure reducer, and a fourth valve is arranged at the steam outlet end of the first temperature and pressure reducer; the first temperature and pressure reducer is provided with a high-exhaust bypass, and a fifth valve is arranged on the high-exhaust bypass; the high-pressure steam inlet end of the pressure matcher is connected with the steam outlet end of the first temperature and pressure reducer, the steam outlet end of the pressure matcher is connected with an industrial steam supply main pipe, a sixth valve is installed at the high-pressure steam inlet end of the pressure matcher, a ninth valve is installed at the low-pressure steam inlet end of the pressure matcher, and a seventh valve is installed at the steam outlet end of the pressure matcher; the pressure matcher is provided with an exhaust bypass, and an eighth valve is installed on the exhaust bypass; the steam inlet end of the middle exhaust steam extraction pipeline is connected with the steam extraction end of the steam turbine intermediate pressure cylinder, and a first valve is mounted on the middle exhaust steam extraction pipeline; the steam outlet end of the middle exhaust steam extraction pipeline is divided into two paths, one path is connected with the low-pressure steam inlet end of the pressure matcher, the other path is connected with the steam inlet end of the second temperature and pressure reducer through a first middle exhaust bypass, a twelve-number valve is installed at the steam inlet end of the second temperature and pressure reducer, an eleven-number valve is installed at the steam outlet end of the second temperature and pressure reducer, and the steam outlet end of the second temperature and pressure reducer is connected with an industrial steam supply main pipe; the second temperature and pressure reducer is provided with a second middle-row bypass, and a tenth valve is installed on the second middle-row bypass; the industrial steam supply main pipe is used for supplying steam to industrial users.
Further, the industrial steam supply main pipe is simultaneously connected with three industrial steam extraction source pipes.
Compared with the prior art, the utility model, have following advantage and effect:
1) the design is reasonable, the structure is simple, the performance is reliable, and the industrial steam extraction port is reasonably designed based on the cascade utilization principle of energy.
2) The unit can be based on user's parameter and extraction opening parameter according to actual operating condition, rationally selects industry extraction port, when guaranteeing unit operating efficiency and operation safety, avoids causing energy loss, improves unit heat supply quality simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure: 1-boiler, 2-high pressure cylinder of steam turbine, 3-medium pressure cylinder of steam turbine, 4-low pressure cylinder of steam turbine, 5-first valve, 6-middle exhaust steam extraction pipeline, 7-reheating steam pipe of boiler, 8-high heat extraction end steam extraction pipeline, 9-second valve, 10-third valve, 11-fourth valve, 12-fifth valve, 13-high exhaust bypass, 14-first temperature and pressure reduction device, 15-sixth valve, 16-seventh valve, 17-exhaust bypass, 18-eighth valve, 19-ninth valve, 20-pressure matcher, 21-second temperature and pressure reduction device, 22-middle exhaust bypass one, 23-tenth valve, 24-eleventh valve, 25-twelfth valve, 26-middle exhaust bypass two, 27-industrial steam supply main pipe, 28-condenser and 29-condensate pump.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Examples are given.
Referring to fig. 1, the cogeneration heat supply integrated system based on user parameters in this embodiment includes a boiler 1, a high-pressure turbine cylinder 2, a medium-pressure turbine cylinder 3, a low-pressure turbine cylinder 4, a first temperature and pressure reducer 14, a pressure matcher 20, a second temperature and pressure reducer 21, a condenser 28, and a condensate pump 29.
The boiler 1 is connected with a turbine high-pressure cylinder 2, the turbine high-pressure cylinder 2 is connected with a turbine intermediate-pressure cylinder 3 through a boiler reheating steam pipe 7, the turbine intermediate-pressure cylinder 3 is connected with a turbine low-pressure cylinder 4, and the turbine low-pressure cylinder 4, a condenser 28 and a condensate pump 29 are sequentially connected; the steam inlet end of the high heat extraction end steam extraction pipeline 8 is connected with a boiler reheating steam pipe 7, the steam outlet end of the high heat extraction end steam extraction pipeline 8 is connected with the steam inlet end of a first temperature and pressure reducing device 14, and a second valve 9 is arranged on the high heat extraction end steam extraction pipeline 8; a third valve 10 is arranged at the steam inlet end of the first temperature and pressure reducing device 14, and a fourth valve 11 is arranged at the steam outlet end of the first temperature and pressure reducing device 14; the first temperature and pressure reducing device 14 is provided with a high-exhaust bypass 13, and a fifth valve 12 is arranged on the high-exhaust bypass 13; the high-pressure steam inlet end of the pressure matcher 20 is connected with the steam outlet end of the first temperature and pressure reducing device 14, the steam outlet end of the pressure matcher 20 is connected with an industrial steam supply main pipe 27, a sixth valve 15 is installed at the high-pressure steam inlet end of the pressure matcher 20, a ninth valve 19 is installed at the low-pressure steam inlet end of the pressure matcher 20, and a seventh valve 16 is installed at the steam outlet end of the pressure matcher 20; the pressure matcher 20 is provided with an exhaust bypass 17, and an eighth valve 18 is arranged on the exhaust bypass 17; the steam inlet end of the middle exhaust steam extraction pipeline 6 is connected with the steam extraction end of the steam turbine intermediate pressure cylinder 3, and a first valve 5 is installed on the middle exhaust steam extraction pipeline 6; the steam outlet end of the middle exhaust steam extraction pipeline 6 is divided into two paths, one path is connected with the low-pressure steam inlet end of the pressure matcher 20, the other path is connected with the steam inlet end of the second temperature and pressure reducer 21 through a middle exhaust bypass I22, a twelve-number valve 25 is installed at the steam inlet end of the second temperature and pressure reducer 21, an eleven-number valve 24 is installed at the steam outlet end of the second temperature and pressure reducer 21, and the steam outlet end of the second temperature and pressure reducer 21 is connected with an industrial steam supply main pipe 27; the second temperature and pressure reducing device 21 is provided with a second middle-row bypass 26, and a tenth valve 23 is arranged on the second middle-row bypass 26; the industrial steam supply main pipe 27 supplies steam to industrial users, and the industrial steam supply main pipe 27 is simultaneously connected with three industrial steam extraction source pipes.
In this embodiment, all valves all have the function of regulation, cut off and signal transmission, can carry out real-time feedback and regulation according to industrial user's demand to realize the real-time regulation between power plant's side and the user side, reduce the over-supply loss, improve the heat supply quality.
The adjusting method of the combined heat and power generation and heat supply integrated system based on the user parameters is as follows, the extraction pressure P of the middle exhaust steam extraction pipeline 6 is set to have two specific values of X and Y, Y is more than 0 and less than X, and the specific values of X and Y meet the following requirements:
1. when P is larger than X, the extraction steam of the middle exhaust steam extraction pipeline 6 is independently utilized, so that the requirements of industrial users can be met;
2. when Y is more than P and less than X, the steam extraction of the middle exhaust steam extraction pipeline 6 and the high exhaust end steam extraction pipeline 8 are simultaneously utilized, the requirements of industrial users can be met, and the pressure matcher 20 has a good matching effect;
3. when P is more than 0 and less than Y, the steam extraction matching effect of the middle exhaust steam extraction pipeline 6 and the high heat exhaust end steam extraction pipeline 8 is poor, but the steam extraction of the high heat exhaust end steam extraction pipeline 8 is independently utilized, so that the requirements of industrial users can be met.
The specific embodiment is as follows:
working condition one (P is more than X): the second valve 9, the sixth valve 15, the seventh valve 16, the eighth valve 18 and the ninth valve 19 are closed, the first valve 5, the twelfth valve 25 and the eleventh valve 24 are opened, steam is extracted by the steam turbine intermediate pressure cylinder 3 through the intermediate exhaust steam extraction pipeline 6, and after the temperature and pressure of the steam turbine intermediate pressure cylinder are reduced by the second temperature and pressure reducer 21, industrial heat supply is carried out outside through the industrial steam supply main pipe 27.
Working condition two (Y is more than P and less than X): open and adjust valve 5 and No. two valves 9, arrange in the use and draw vapour pipeline 6 and high heat extraction end and draw vapour pipeline 8 and draw the vapour, satisfy the industrial user demand: at the moment, the third valve 10, the fourth valve 11, the tenth valve 23, the eleventh valve 24 and the twelfth valve 25 are closed, the fifth valve 12, the sixth valve 15, the seventh valve 16 and the ninth valve 19 are opened, the steam extracted from the high heat extraction end steam extraction pipeline 8 enters the pressure adapter 20 through the high exhaust bypass 13, the steam extracted from the middle exhaust steam extraction pipeline 6 directly enters the pressure adapter 20, and the two steam extracts are mixed and matched and then conveyed to the industrial steam supply main pipe 27.
Working condition three (P is more than 0 and less than Y): the first valve 5, the sixth valve 15, the seventh valve 16, the tenth valve 23 and the eleventh valve 24 are closed, the second valve 9, the third valve 10, the fourth valve 11 and the eighth valve 18 are opened, steam is extracted by the boiler reheating steam pipe 7 through the high heat extraction end steam extraction pipeline 8, the temperature and pressure of the steam are reduced by the first temperature and pressure reducer 14, and then industrial heat supply is carried out outside by the industrial steam supply main pipe 27.
And will be apparent to those skilled in the art from the foregoing description.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the patent idea of the utility model are included in the protection scope of the patent of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (2)
1. The utility model provides a combined heat and power generation heating integrated system based on user's parameter which characterized in that: the system comprises a boiler (1), a turbine high-pressure cylinder (2), a turbine intermediate-pressure cylinder (3), a turbine low-pressure cylinder (4), a first temperature and pressure reduction device (14), a pressure matcher (20), a second temperature and pressure reduction device (21), a condenser (28) and a condensate pump (29); the boiler (1) is connected with a turbine high-pressure cylinder (2), the turbine high-pressure cylinder (2) is connected with a turbine intermediate-pressure cylinder (3) through a boiler reheating steam pipe (7), the turbine intermediate-pressure cylinder (3) is connected with a turbine low-pressure cylinder (4), and the turbine low-pressure cylinder (4), a condenser (28) and a condensate pump (29) are sequentially connected; the steam inlet end of a high heat extraction end steam extraction pipeline (8) is connected with a boiler reheating steam pipe (7), the steam outlet end of the high heat extraction end steam extraction pipeline (8) is connected with the steam inlet end of a first temperature and pressure reducing device (14), and a second valve (9) is installed on the high heat extraction end steam extraction pipeline (8); a third valve (10) is arranged at the steam inlet end of the first temperature and pressure reducer (14), and a fourth valve (11) is arranged at the steam outlet end of the first temperature and pressure reducer (14); the first temperature and pressure reducing device (14) is provided with a high-exhaust bypass (13), and a fifth valve (12) is arranged on the high-exhaust bypass (13); the high-pressure steam inlet end of the pressure matcher (20) is connected with the steam outlet end of a first temperature and pressure reducing device (14), the steam outlet end of the pressure matcher (20) is connected with an industrial steam supply main pipe (27), a sixth valve (15) is installed at the high-pressure steam inlet end of the pressure matcher (20), a ninth valve (19) is installed at the low-pressure steam inlet end of the pressure matcher (20), and a seventh valve (16) is installed at the steam outlet end of the pressure matcher (20); the pressure matcher (20) is provided with an exhaust bypass (17), and an eighth valve (18) is mounted on the exhaust bypass (17); the steam inlet end of the middle exhaust steam extraction pipeline (6) is connected with the steam extraction end of the steam turbine intermediate pressure cylinder (3), and a first valve (5) is installed on the middle exhaust steam extraction pipeline (6); the steam outlet end of the middle exhaust steam extraction pipeline (6) is divided into two paths, one path is connected with the low-pressure steam inlet end of the pressure adapter (20), the other path is connected with the steam inlet end of the second temperature and pressure reducer (21) through a first middle exhaust bypass (22), a twelfth valve (25) is installed at the steam inlet end of the second temperature and pressure reducer (21), an eleventh valve (24) is installed at the steam outlet end of the second temperature and pressure reducer (21), and the steam outlet end of the second temperature and pressure reducer (21) is connected with an industrial steam supply main pipe (27); the second temperature and pressure reducing device (21) is provided with a second middle-row bypass (26), and a tenth valve (23) is mounted on the second middle-row bypass (26); the industrial steam supply main pipe (27) is used for supplying steam to industrial users.
2. A cogeneration heating integrated system based on user parameters according to claim 1, wherein: the industrial steam supply main pipe (27) is simultaneously connected with three industrial steam extraction source pipes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920347882.7U CN210373653U (en) | 2019-03-19 | 2019-03-19 | Cogeneration heating integrated system based on user parameters |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941554A (en) * | 2022-05-09 | 2022-08-26 | 中国船舶重工集团公司第七0三研究所 | Energy cascade system for cogeneration of heating steam and utilization method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941554A (en) * | 2022-05-09 | 2022-08-26 | 中国船舶重工集团公司第七0三研究所 | Energy cascade system for cogeneration of heating steam and utilization method |
| CN114941554B (en) * | 2022-05-09 | 2023-09-08 | 中国船舶重工集团公司第七0三研究所 | Cascade system for heating steam to carry out heat and electricity combined energy and utilization method |
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