CN215566145U - Steam exhaust waste heat recycling water condensing system - Google Patents
Steam exhaust waste heat recycling water condensing system Download PDFInfo
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- CN215566145U CN215566145U CN202122181074.8U CN202122181074U CN215566145U CN 215566145 U CN215566145 U CN 215566145U CN 202122181074 U CN202122181074 U CN 202122181074U CN 215566145 U CN215566145 U CN 215566145U
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Abstract
The utility model relates to the field of energy-saving equipment of power plants, in particular to a steam exhaust waste heat recycling condensate system, which has the technical scheme that the condensate system comprises a steam booster condenser hot well, a preposed condenser hot well, a large steam turbine condenser hot well and a condensate polishing system communicated with the large steam turbine condenser hot well, wherein the steam booster condenser hot well is communicated with the preposed condenser hot well which is communicated with the large steam turbine condenser hot well; because the temperature of the condensed water in the condenser hot well of the steam booster is higher than that of the condensed water in the condenser hot well of the front-mounted steam turbine, and the temperature of the condensed water in the condenser hot well of the front-mounted steam turbine is equal to that of the condensed water in the condenser hot well of the large steam turbine, the condensed water in the condenser hot well of the steam booster and the condensed water in the condenser hot well of the front-mounted steam turbine are mixed and then communicated with the condenser hot well of the large steam turbine through the condenser hot well of the front-mounted steam turbine, so that the effect of reducing the possibility that the ion exchange resin in the condensate polishing system is damaged due to the high-temperature condensed water can be achieved.
Description
Technical Field
The application relates to the field of energy-saving equipment of power plants, in particular to a steam exhaust waste heat recycling water condensing system.
Background
The heat supply by using the steam booster to recover the waste heat of the exhaust steam of the thermal power plant is more and more widely popularized and applied due to the obvious energy-saving effect.
In the related art, referring to fig. 1, the steam exhaust waste heat recycling and condensing system comprises a steam booster condenser 1, a pre-condenser 2 and a large steam turbine condenser 3; the condenser 1 comprises a condenser hot well 11, the pre-condenser 2 comprises a pre-condenser hot well 21, and the condenser 3 comprises a condenser hot well 31; the condenser hot well 11 of the steam booster is communicated with a large turbine condenser hot well 31, and the preposed condenser hot well 21 is communicated with the large turbine condenser hot well 31; the steam booster condenser 1, the pre-condenser 2 and the large turbine condenser 3 are respectively provided with a condensate pump system; and one side of the hot well 31 of the condenser of the large turbine is communicated with a condensed water fine treatment system 4 for filtering condensed water.
When heat is supplied in winter, firstly, condensed water in the steam booster condenser hot well 11 is pumped into the large turbine condenser hot well 31 by using a condensed water pump system, meanwhile, the condensed water in the preposed condenser hot well 21 is pumped into the large turbine condenser hot well 31 by using the condensed water pump system, then the condensed water mixed in the steam booster condenser hot well 11, the preposed condenser hot well 21 and the large turbine condenser hot well 31 is conveyed into a condensed water fine treatment system 4 by using the condensed water pump system of the large turbine condenser 3 for filtration, and finally, the treated condensed water is conveyed into the heat regenerative system for use.
In view of the above-mentioned related art solutions, the inventors found that: the condensate polishing system 4 comprises ion exchange resin for removing metal ions and various negative ions in water, the ion exchange resin has certain heat resistance, and when the use temperature exceeds the temperature limit which can be borne by the ion exchange resin, the ion exchange resin is easily damaged due to thermal decomposition; meanwhile, the temperature of the condensed water in the condenser hot well 11 of the steam booster is higher than that of the condensed water in the pre-condenser hot well 21, and the temperature of the condensed water in the pre-condenser hot well 21 is equal to that of the condensed water in the condenser hot well 31 of the large steam turbine; therefore, after the condensed water in the hot well 11 of the steam booster condenser directly flows into the hot well 31 of the steam booster condenser, the ion exchange resin is damaged due to thermal decomposition, and the service life is further shortened.
SUMMERY OF THE UTILITY MODEL
In order to reduce ion exchange resin and suffer the possibility of destroying because of high temperature condensate water, this application provides a steam exhaust waste heat recovery utilizes condensate water system.
The application provides a steam exhaust waste heat recovery utilizes condensate system adopts following technical scheme:
the waste steam waste heat recycling and condensing system comprises a steam booster condenser hot well, a preposed condenser hot well, a large steam turbine condenser hot well and a condensed water fine treatment system communicated with the large steam turbine condenser hot well, wherein the steam booster condenser hot well is communicated with the preposed condenser hot well, and the preposed condenser hot well is communicated with the large steam turbine condenser hot well.
By adopting the technical scheme, as the hot well of the condenser of the large steam turbine is communicated with the hot well of the prepositive condenser, and the hot well of the prepositive condenser is communicated with the hot well of the condenser of the steam booster, when the condensed water needs to be filtered, the high-temperature condensed water in the hot well of the condenser of the steam booster is firstly discharged into the hot well of the prepositive condenser, so that the first mixed flow of the condensed water is realized, and then the mixed condensed water is discharged into the hot well of the condenser of the large steam turbine, so that the second mixed flow of the condensed water is realized; simultaneously because the temperature of the interior condensate water of steam increase machine condenser hot well is higher than the temperature of the interior condensate water of leading condenser hot well, the temperature of the interior condensate water of leading condenser hot is equal to the temperature of the interior condensate water of steam turbine condenser hot well, therefore the condensate water can descend after twice abundant mixed flow, and then alright reach the possibility that ion exchange resin in the reduction condensate water fine treatment system suffers the destruction because of high temperature condensate water, thereby prolong ion exchange resin's life, and the production cost is reduced, the effect of the income is synthesized in the improvement.
Preferably, the normal liquid levels of the condenser hot well of the steam booster and the condenser hot well of the front condenser are higher than the normal liquid level of the condenser hot well of the large steam turbine.
Through adopting above-mentioned technical scheme, condensation water can utilize self gravity to flow in the big steam turbine condenser hot well in increase steam turbine condenser hot well and leading steam condenser hot well, no longer needs condensate pump, has improved the convenience of operation greatly.
Preferably, the normal liquid level of the condenser hot well of the steam booster is higher than that of the pre-condenser hot well.
Through adopting above-mentioned technical scheme, condensation water can utilize self gravity to flow in leading condenser hot-well in the turbine condenser hot-well, has realized the free flow step by step of condensation water, has further improved the convenience of operation.
Preferably, a first drainage system is arranged between the hot well of the steam booster condenser and the front-mounted hot well of the condenser, the first drainage system comprises a first water-blocking bend used for enabling the steam booster condenser to store condensed water, and the highest point of the first water-blocking bend is lower than the normal liquid level of the hot well of the steam booster condenser.
By adopting the technical scheme, the condensed water in the hot well of the steam booster condenser flows into the hot well of the front condenser through the first drainage system; the first water-blocking bend is convenient for reserving certain condensed water in the hot well of the steam booster condenser, and is convenient for improving the sealing performance of each interface on the hot well of the steam booster condenser, so that the normal operation of equipment is ensured.
Preferably, a second drainage system is arranged between the pre-condenser hot well and the large turbine condenser hot well, the second drainage system comprises a second water-blocking bend used for enabling the pre-condenser hot well to store condensed water, and the highest point of the second water-blocking bend is lower than the normal liquid level of the pre-condenser hot well.
By adopting the technical scheme, the condensed water in the preposed condenser hot well flows into the large turbine condenser hot well through the second drainage system; the second that sets up blocks water and bends and be convenient for make certain condensate water of remaining in the leading condenser hot-well, be convenient for improve the sealing performance of each interface on the leading condenser hot-well to guarantee the normal operating of equipment.
Preferably, the first drainage system comprises a first flow control valve; the second hydrophobic system includes a second flow control valve.
Through adopting above-mentioned technical scheme, when the delivery flow of the condensate water need be adjusted, utilize first flow control valve and second flow control valve alright realize the regulation of flow, improved the convenience of operation.
Preferably, the first hydrophobic system comprises a first vacuum isolation valve; the second hydrophobic system includes a second vacuum isolation valve.
By adopting the technical scheme, in the heating season, the large turbine condenser, the pre-condenser and the steam booster condenser are put into operation at the same time, and the vacuum isolating valve is opened; in non-heating seasons, the pre-condenser and the steam booster condenser are shut down, the vacuum isolation valve is turned off, and the large turbine condenser operates independently, so that the convenience of operation is further improved.
Preferably, the first drainage system comprises a first communication pipe communicated with the steam booster condenser hot well, and the first communication pipe and the steam booster condenser hot well are in socket welding.
By adopting the technical scheme, the socket welding has no groove opening problem and no opposite dislocation problem, so that the convenience of connecting the first connecting pipe and the hot well of the steam booster condenser is greatly improved, and the working efficiency is greatly improved.
Preferably, the second drainage system comprises a third communicating pipe communicated with the preposed condenser hot well, and the third communicating pipe and the preposed condenser hot well are in socket welding.
By adopting the technical scheme, the socket welding has no groove and no opposite dislocation, so that the convenience of connecting the third communicating pipe with the preposed condenser hot well is greatly improved, and the working efficiency is greatly improved.
In summary, the present application has the following technical effects:
because the temperature of the condensed water in the condenser hot well of the steam booster is higher than that of the condensed water in the heat well of the front condenser, and the temperature of the condensed water in the heat well of the front condenser is equal to that of the condensed water in the condenser hot well of the large steam turbine, the condenser hot well of the large steam turbine is communicated with the heat well of the front condenser, and the heat well of the front condenser is communicated with the heat well of the steam booster condenser, so that the serial flow of the condensed water can be realized, the possibility that the ion exchange resin in the condensate polishing system is damaged due to the high-temperature condensed water is reduced, and the service life of the ion exchange resin is prolonged;
the normal liquid levels of the hot well of the steam booster condenser and the hot well of the front condenser are higher than the normal liquid level of the hot well of the steam turbine condenser, so that condensed water in the hot well of the steam booster condenser and the hot well of the front condenser can flow into the hot well of the steam turbine condenser by utilizing self gravity, the recycling of the condensed water is further realized, and the convenience of operation is greatly improved;
through the first water-blocking bend, certain condensed water is reserved in the hot well of the steam booster condenser due to the design of the first water-blocking bend, so that the sealing performance of each interface on the hot well of the steam booster condenser is improved conveniently, and the normal operation of equipment is ensured.
Drawings
FIG. 1 is a schematic diagram of a steam exhaust waste heat recycling condensate system in the related art;
FIG. 2 is a schematic system diagram of a steam exhaust waste heat recycling and water condensing system in the embodiment of the application.
In the figure, 1, a turbine condenser; 11. a turbine condenser hot well; 2. a pre-condenser; 21. a pre-condenser hot well; 3. a large turbine condenser; 31. a large turbine condenser hot well; 4. a condensate polishing system; 5. a first hydrophobic system; 51. a first communication pipe; 52. a first water-blocking bend; 53. a second communicating pipe; 6. a second hydrophobic system; 61. a third communicating pipe; 62. a second water-blocking bend; 63. a fourth communicating pipe; 7. a first vacuum isolation valve; 8. a first flow control valve; 9. a second vacuum isolation valve; 10. a second flow control valve.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Referring to fig. 2, the application provides a steam exhaust waste heat recycling condensate system, which comprises a large steam turbine condenser 3, a pre-condenser 2 and a steam booster condenser 1; the large-turbine condenser 3 comprises a large-turbine condenser hot well 31, the pre-condenser 2 comprises a pre-condenser hot well 21, and the steam-increasing condenser 1 comprises a steam-increasing condenser hot well 11; the large turbine condenser hot well 31 is communicated with the preposed condenser hot well 21, and the preposed condenser hot well 21 is communicated with the steam booster condenser hot well 11; the steam booster condenser 1 and the pre-condenser 2 are both provided with condensate systems, and the large turbine condenser 3 is provided with a condensate pump system; one side of the large turbine condenser hot well 31 is communicated with a condensed water fine treatment system 4, and the condensed water fine treatment system 4 comprises ion exchange resin used for removing metal ions and various negative root ions in water.
When heating in winter, firstly, the condensate system of the steam booster condenser 1 is utilized to automatically flow the condensate in the steam booster condenser hot well 11 into the pre-condenser hot well 21, then the condensate system of the pre-condenser 2 is utilized to automatically flow the condensate in the pre-condenser hot well 21 into the steam turbine condenser hot well 31, then the condensate pump system of the steam turbine condenser 3 is utilized to convey the condensate in the steam turbine condenser hot well 31 into the condensate polishing system 4 for filtration treatment, and finally the treated condensate is conveyed into the heat recovery system for use; because the ion exchange resin has certain heat resistance, when the use temperature exceeds the temperature limit which can be born by the ion exchange resin, the ion exchange resin can be damaged due to thermal decomposition, and simultaneously, because the temperature of the condensed water in the condenser hot well 11 of the steam booster is higher than that of the condensed water in the condenser hot well 21 of the front condenser, and the temperature of the condensed water in the condenser hot well 21 of the front condenser is equal to that of the condensed water in the condenser hot well 31 of the big steam turbine, the condenser hot well 31 of the big steam turbine is communicated with the condenser hot well 21 of the front condenser, and the communication between the condenser hot well 21 of the front condenser and the condenser hot well 11 of the steam booster can reduce the possibility that the ion exchange resin is damaged due to the high-temperature condensed water, thereby prolonging the service life of the ion exchange resin, reducing the production cost and improving the comprehensive benefit.
Referring to fig. 2, the normal liquid level of the condenser hot well 11 of the steam booster is higher than the normal liquid level of the pre-condenser hot well 21, and the normal liquid level of the pre-condenser hot well 21 is higher than the normal liquid level of the condenser hot well 31 of the large steam turbine; the liquid level height difference of the steam booster condenser hot well 11, the prepositive condenser hot well 21 and the large steam turbine condenser hot well 31 is realized by raising the height of the foundation or the support of the steam booster condenser hot well 11 and the prepositive condenser hot well 21; when the condensed water needs to be recycled, the condensed water in the turbine-increasing condenser hot well 11 can flow into the pre-condenser hot well 21 by utilizing the self gravity, and the condensed water in the pre-condenser hot well 21 can flow into the steam turbine condenser hot well 31 by utilizing the self gravity, so that the recycling of the condensed water is realized; the arrangement of the heights of the steam-increasing machine condenser hot well 11, the preposed condenser hot well 21 and the large steam turbine condenser hot well 31 realizes the gradual self-flow of the condensed water, on one hand, the convenience of operation is greatly improved, the use amount of a condensed water pump system is reduced, and on the other hand, the possibility of the backflow of the condensed water is reduced.
Referring to fig. 2, a first drainage system 5 is arranged between the steam booster condenser hot well 11 and the front condenser hot well 21, the first drainage system 5 comprises a first communication pipe 51 communicated with the steam booster condenser hot well 11, the first communication pipe 51 is in socket joint welding with the steam booster condenser hot well 11, one end of the first communication pipe 51, which is far away from the steam booster condenser hot well 11, is communicated with a first water-blocking bend 52, the cross section of the first water-blocking bend 52 is approximately N-shaped, the highest point of the first water-blocking bend 52 is lower than the normal liquid level of the steam booster condenser hot well 11, one end of the first water-blocking bend 52, which is far away from the first communication pipe 51, is communicated with a second communication pipe 53, one end of the second communication pipe 53, which is far away from the first water-blocking bend 52, is in socket joint welding with the front condenser hot well 21, and the first communication pipe 51, the first water-blocking bend 52 and the second communication pipe 53 are integrally formed; a second drainage system 6 is arranged between the front condenser hot well 21 and the large turbine condenser hot well 31, the second drainage system 6 comprises a third communicating pipe 61 which is in socket joint welding with the front condenser hot well 21, one end, far away from the front condenser hot well 21, of the third communicating pipe 61 is communicated with a second water-blocking bend 62, the cross section of the second water-blocking bend 62 is approximately in an N shape, the highest point of the second water-blocking bend 62 is lower than the normal water level of the front condenser hot well 21, one end, far away from the third communicating pipe 61, of the second water-blocking bend 62 is communicated with a fourth communicating pipe 63, one end, far away from the second water-blocking bend 62, of the fourth communicating pipe 63 is in socket joint welding with the large turbine condenser hot well 31, and the third communicating pipe 61, the second water-blocking bend 62 and the fourth communicating pipe 63 are integrally formed.
When heating in winter, the condensed water in the condenser hot well 11 of the steam booster flows into the pre-condenser hot well 21 through the first drainage system 5, then flows into the condenser hot well 31 of the large steam turbine through the second drainage system 6, then is conveyed into the condensed water fine treatment system 4 for filtration treatment, and finally is conveyed into the heat return system for use; the arrangement of the first water-blocking bend 52 is convenient for keeping a certain amount of condensed water in the hot well 11 of the steam booster condenser, on one hand, the sealing performance of each interface 11 on the hot well of the steam booster condenser is convenient to improve, so that the normal operation of equipment is ensured, on the other hand, the manufacturing process level of the hot well 11 of the steam booster condenser is reduced, so that the hot well 11 of the steam booster condenser is convenient to manufacture, and the manufacturing cost is reduced; the second water-blocking bend 62 is arranged to facilitate retention of a certain amount of condensed water in the pre-condenser hot well 21, so that on one hand, the sealing performance of each interface on the pre-condenser hot well 21 is improved to ensure normal operation of equipment, on the other hand, the level of the manufacturing process of the pre-condenser hot well 21 is reduced, so that the pre-condenser hot well 21 is conveniently manufactured, and the manufacturing cost is reduced; because socket welding does not have the problem of grooving and the problem of the dislocation of no butt joint, the convenience that first communicating pipe 51 and steam increase machine condenser hot well 11, second communicating pipe 53 and leading condenser hot well 21, third communicating pipe 61 and leading condenser hot well 21 and fourth communicating pipe 63 and big turbine condenser hot well 31 realize being connected has been improved greatly, has improved work efficiency greatly.
Referring to fig. 2, the second communication pipe 53 is installed with the first vacuum isolation valve 7 and the first flow rate control valve 8; the fourth communication pipe 63 is mounted with the second vacuum isolation valve 9 and the second flow rate control valve 10.
When the delivery flow of the condensed water needs to be adjusted, the adjustment of the flow of the condensed water can be realized by controlling the first flow control valve 8 and the second flow control valve 10; in the heating season, the large steam turbine condenser 3, the prepositive condenser 2 and the steam booster condenser 1 are simultaneously put into operation, the vacuum isolating valve is opened, in the non-heating season, the prepositive condenser 2 and the steam booster condenser 1 are stopped, the vacuum isolating valve is turned off, the large steam turbine condenser 3 is independently operated, and simultaneously, because the vacuum isolating valve has the characteristics of high sealing property, convenience in installation and maintenance and difficulty in causing sundries to deposit, the convenience in operation is greatly improved by the design of the first vacuum isolating valve 7 and the second vacuum isolating valve 9.
To sum up, the application process of this application is: when heating in winter, firstly, the first vacuum isolation valve 7 and the second vacuum isolation valve 9 are opened, secondly, the condensate pump system of the steam booster condenser 1 is utilized to convey the condensate in the steam booster condenser hot well 11 into the preposed condenser hot well 21 through the first drainage system 5, secondly, the condensate pump system of the preposed condenser 2 is utilized to convey the condensate in the preposed condenser hot well 21 into the steam turbine condenser hot well 31 through the second drainage system 6, secondly, the condensate pump system of the steam turbine condenser 3 is utilized to convey the condensate flowing into the steam turbine condenser 3 into the condensate polishing system 4 for filtering treatment, and finally, the treated condensate is conveyed into the heat regeneration system for use.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. The utility model provides an exhaust steam waste heat recovery utilizes condensate system, includes increases turbine condenser hot-well (11), leading condenser hot-well (21), big turbine condenser hot-well (31) and with condensate polishing system (4) of big turbine condenser hot-well (31) intercommunication, its characterized in that: the condenser hot well (11) of the steam booster is communicated with the preposed condenser hot well (21), and the preposed condenser hot well (21) is communicated with the condenser hot well (31) of the large steam turbine.
2. The steam exhaust waste heat recycling and water condensing system according to claim 1, characterized in that: the normal liquid levels of the condenser hot well (11) of the steam booster and the condenser hot well (21) in front are higher than the normal liquid level of the condenser hot well (31) of the large turbine.
3. The steam exhaust waste heat recycling and water condensing system according to claim 2, characterized in that: the normal liquid level of the condenser hot well (11) of the steam booster is higher than that of the pre-condenser hot well (21).
4. The steam exhaust waste heat recycling and water condensing system according to claim 1, characterized in that: a first drainage system (5) is arranged between the steam booster condenser hot well (11) and the front condenser hot well (21), the first drainage system (5) comprises a first water-blocking bend (52) used for enabling the steam booster condenser (1) to store condensed water, and the highest point of the first water-blocking bend (52) is lower than the normal liquid level of the steam booster condenser hot well (11).
5. The steam exhaust waste heat recycling and water condensing system according to claim 4, characterized in that: a second drainage system (6) is arranged between the preposed condenser hot well (21) and the large turbine condenser hot well (31), the second drainage system (6) comprises a second water-blocking bend (62) which is used for enabling the preposed condenser hot well (21) to store condensed water, and the highest point of the second water-blocking bend (62) is lower than the normal liquid level of the preposed condenser hot well (21).
6. The steam exhaust waste heat recycling and water condensing system according to claim 5, characterized in that: the first drainage system (5) comprises a first flow control valve (8); the second hydrophobic system (6) comprises a second flow control valve (10).
7. The steam exhaust waste heat recycling and water condensing system according to claim 5, characterized in that: the first hydrophobic system (5) comprises a first vacuum isolation valve (7); the second hydrophobic system (6) comprises a second vacuum isolation valve (9).
8. The steam exhaust waste heat recycling and water condensing system according to claim 4, characterized in that: the first drainage system (5) comprises a first communication pipe (51) communicated with the steam booster condenser hot well (11), and the first communication pipe (51) and the steam booster condenser hot well (11) are in socket welding.
9. The steam exhaust waste heat recycling and water condensing system according to claim 5, characterized in that: the second drainage system (6) comprises a third communicating pipe (61) communicated with the preposed condenser hot well (21), and the third communicating pipe (61) is in socket welding with the preposed condenser hot well (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202122181074.8U CN215566145U (en) | 2021-09-09 | 2021-09-09 | Steam exhaust waste heat recycling water condensing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122181074.8U CN215566145U (en) | 2021-09-09 | 2021-09-09 | Steam exhaust waste heat recycling water condensing system |
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| Publication Number | Publication Date |
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| CN215566145U true CN215566145U (en) | 2022-01-18 |
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| CN202122181074.8U Active CN215566145U (en) | 2021-09-09 | 2021-09-09 | Steam exhaust waste heat recycling water condensing system |
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2021
- 2021-09-09 CN CN202122181074.8U patent/CN215566145U/en active Active
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