CN108645237B - Double back pressure unit condenser heat recovery system - Google Patents
Double back pressure unit condenser heat recovery system Download PDFInfo
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- CN108645237B CN108645237B CN201810560560.0A CN201810560560A CN108645237B CN 108645237 B CN108645237 B CN 108645237B CN 201810560560 A CN201810560560 A CN 201810560560A CN 108645237 B CN108645237 B CN 108645237B
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- heat recovery
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- 238000011084 recovery Methods 0.000 title claims abstract description 81
- 238000010438 heat treatment Methods 0.000 claims description 43
- 238000002347 injection Methods 0.000 claims description 28
- 239000007924 injection Substances 0.000 claims description 28
- 230000002209 hydrophobic effect Effects 0.000 claims description 18
- 230000009977 dual effect Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 63
- 238000009833 condensation Methods 0.000 abstract description 18
- 230000005494 condensation Effects 0.000 abstract description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 abstract description 5
- 239000001301 oxygen Substances 0.000 abstract description 5
- 238000004781 supercooling Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000003657 drainage water Substances 0.000 abstract 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B7/00—Combinations of two or more condensers, e.g. provision of reserve condenser
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B11/00—Controlling arrangements with features specially adapted for condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
Abstract
The invention discloses a heat recovery system of a double back pressure unit condenser, which comprises a low-pressure side condenser and a high-pressure side condenser, wherein a group A pipe and a group B pipe are arranged between the low-pressure side condenser and the high-pressure side condenser, the group A pipe is connected with a first heat recovery device, the group B pipe is connected with a second heat recovery device, the first heat recovery device is connected with a first drain pipe, and the second heat recovery device is connected with a second drain pipe. According to the invention, the group A pipe and the group B pipe are arranged between the low-pressure side condenser and the high-pressure side condenser, the low-pressure drainage water with higher temperature is led into the connecting pipe of the group A pipe and the group B pipe by utilizing the first heat recovery device and the second heat recovery device, the low-pressure drainage water is mixed with the condensation water from the low-pressure side condenser in the connecting pipe, so that the temperature of the condensation water is increased, the supercooling degree and the oxygen content of the condensation water are reduced, the heat taken away by the circulation water in the low-pressure side condenser is reduced, the temperature at the outlet of the condensation water is increased, and the energy consumption of a system is reduced.
Description
Technical Field
The invention relates to a heat recovery system, in particular to a heat recovery system of a condenser of a double back pressure unit.
Background
At present, the turbine condensers of the unit with the power of more than 600MW are operated under double back pressure and are divided into high-pressure condensers and low-pressure condensers. The pressure difference between the high-pressure side condenser and the low-pressure side condenser is larger than 1KPa, the low-pressure side condensed water is connected into a hot well of the high-pressure side condenser, and the supercooling degree of the condensed water is about 0.83 ℃ to 1.56 ℃ according to calculation. The supercooling degree of the condensed water is high, so that the heat required by regenerative heating of the condensed water is increased, and the heat economy of the system is reduced. In addition, the dissolved oxygen content of the condensed water is increased, so that oxygen corrosion of low-pressure equipment and pipelines is caused, and the safety and reliability of the equipment are reduced.
Disclosure of Invention
The invention aims to provide a condenser regenerative system with double back pressure units, which can raise the temperature of condensed water in the system, reduce the supercooling degree and oxygen content of the condensed water, reduce the heat taken away by the circulating water, improve the outlet temperature of the condensed water and improve the economic benefit.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a two backpressure unit condensers heat recovery system, includes low pressure side condenser, high pressure side condenser, is provided with A group's pipe and B group's pipe between low pressure side condenser and the high pressure side condenser, and A group's pipe is connected with first heat recovery device, and B group's pipe is connected with second heat recovery device, and first heat recovery device is connected with first drainage pipe, and second heat recovery device is connected with second drainage pipe. The low-pressure water adding and draining device and the low-pressure side condensing water in the low-pressure side condenser and the high-pressure side condenser can be directly input into the first heat recovery device and the second heat recovery device to be fully mixed, so that the temperature of the condensing water is increased, and the heat economy of the system is improved.
In the aforementioned condenser heat recovery system of double back pressure units, the first heat recovery device comprises 3 a injection pipes, a distributor and a drainage pipe, wherein the a injection pipes are connected with one end of the a drainage pipe through the a distributor, and the other end of the a drainage pipe is connected with the first drainage pipe. The low-addition drainage in the a drainage tube is shunted to 3 a injection pipes through an a distributor.
In the aforementioned condenser heat recovery system of a double back pressure unit, the second heat recovery device comprises 3 b injection pipes, b distributors and b drainage pipes, wherein the b injection pipes are connected with one ends of the b drainage pipes through the b distributors, and the other ends of the b drainage pipes are connected with the second drainage pipes. The low-addition drainage in the b drainage tube is shunted to 3 b injection pipes through a b distributor.
In the aforementioned dual back pressure unit condenser heat recovery system, the group a tube and the group B tube each comprise 3 connecting tubes, each connecting tube comprises a front tube section, a middle tube section and a rear tube section, one end of the front tube section is connected with the low pressure side condenser, and the other end of the front tube section is connected with one end of the middle tube section; one end of the middle pipe section is connected with one end of the rear pipe section; one end of the rear pipe section is connected with the high-pressure side condenser, and the first heat returning device is connected with the middle pipe section of the group A pipe; the second heat returning device is connected with the middle pipe section in the group B pipe.
In the heat recovery system of the condenser with the double back pressure units, the section diameter of the middle pipe section is larger than the section diameters of the front pipe section and the rear pipe section.
In the aforementioned dual back pressure unit condenser heat recovery system, the section diameter of the front pipe section is the same as the section diameter of the rear pipe section.
In the aforementioned dual back pressure unit condenser heat recovery system, still include first heating device, second heating device and third heating device all are connected with first heating device, and second heating device is connected with low pressure side condenser, and third heating device is connected with high pressure side condenser.
In the aforementioned dual back pressure unit condenser heat recovery system, the first heating device includes a low-pressure heater a and a low-pressure heater B; the second heating device comprises a C low-pressure heater and a D low-pressure heater; the third heating device comprises an E low-pressure heater and an F low-pressure heater, wherein the A low-pressure heater is connected with the B low-pressure heater through a pipeline, the B low-pressure heater is respectively connected with the C low-pressure heater and the E low-pressure heater, the C low-pressure heater is connected with the D low-pressure heater, and the E low-pressure heater is connected with the F low-pressure heater.
In the aforementioned dual back pressure unit condenser heat recovery system, each connecting pipe is provided with a turbulence device. The vortex device can accelerate the mixing of condensation water and low-concentration water in the connecting pipe, so that the mixing efficiency is higher, and the mixing is more uniform and sufficient.
In the heat recovery system of the condenser with the double back pressure units, the outlet ends of the group A pipes and the group B pipes or the high-pressure side condenser are internally provided with the mixed flow device. The mixing device is of a box structure, and the condensed water mixed in the connecting pipe and the low added water are sufficiently and uniformly mixed in the mixing device, so that the water temperature after mixing is more stable.
Compared with the prior art, the low-pressure side condenser and the high-pressure side condenser are provided with the group A pipe and the group B pipe, the low-pressure drainage pipe with higher temperature is guided into the connecting pipe of the group A pipe and the group B pipe by the first heat recovery device and the second heat recovery device, the low-pressure drainage pipe is mixed with the condensation water from the low-pressure side condenser, so that the temperature of the condensation water is increased, the supercooling degree and the oxygen content of the condensation water are reduced, the heat taken away by the circulation water in the low-pressure side condenser is reduced, the temperature at the outlet of the condensation water is increased, and the energy consumption of a system is reduced.
According to the invention, the low-pressure-adding water drainage directly conveyed into the high-pressure side condenser is preferentially guided into the connecting pipe of the B pipe group by the second heat returning device, so that the characteristic that the low-pressure-adding water drainage temperature is higher than the condensation water temperature is fully utilized, the condensation water temperature is increased, the low-pressure-adding water drainage temperature characteristic is effectively utilized, the system energy consumption is reduced, and the economic benefit is increased.
Drawings
FIG. 1 is a schematic diagram of the structure of an embodiment of the present invention;
fig. 2 is a schematic structural view of a first regenerator according to an embodiment of the present invention;
FIG. 3 is a schematic view of the positions of a turbulence generating device and a mixing device according to an embodiment of the present invention.
Reference numerals: the low-pressure side condenser, the high-pressure side condenser, the 3-A group pipe, the 4-B group pipe, the 5-first heat recovery device, the 6-second heat recovery device, the 7-first water drain pipe, the 8-second water drain pipe, the 9-a injection pipe, the 10-a distributor, the 11-a drainage pipe, the 12-B injection pipe, the 13-B distributor, the 14-B drainage pipe, the 15-front pipe section, the 16-middle pipe section, the 17-rear pipe section, the 18-first heating device, the 19-second heating device, the 20-third heating device, the 21-turbulence device, the 22-mixed flow device, the 23-connecting pipe, the 24-A low-pressure heater, the 25-B low-pressure heater, the 26-C low-pressure heater, the 27-D low-pressure heater, the 28-E low-pressure heater and the 29-F low-pressure heater.
The invention is further described below with reference to the drawings and the detailed description.
Description of the embodiments
Example 1 of the present invention: the utility model provides a two backpressure unit condensers heat recovery system, includes low pressure side condenser 1, high pressure side condenser 2, is provided with A group's pipe 3 and B group's pipe 4 between low pressure side condenser 1 and the high pressure side condenser 2, and A group's pipe 3 is connected with first heat recovery device 5, and B group's pipe 4 is connected with second heat recovery device 6, and first heat recovery device 5 is connected with first hydrophobic pipe 7, and second heat recovery device 6 is connected with second hydrophobic pipe 8.
Example 2 of the present invention: the utility model provides a two backpressure unit condensers heat recovery system, includes low pressure side condenser 1, high pressure side condenser 2, is provided with A group's pipe 3 and B group's pipe 4 between low pressure side condenser 1 and the high pressure side condenser 2, and A group's pipe 3 is connected with first heat recovery device 5, and B group's pipe 4 is connected with second heat recovery device 6, and first heat recovery device 5 is connected with first hydrophobic pipe 7, and second heat recovery device 6 is connected with second hydrophobic pipe 8.
The first heat recovery device 5 comprises 3 a injection pipes 9, a distributor 10 and a drainage pipe 11, wherein the a injection pipes 9 are connected with one end of the a drainage pipe 11 through the a distributor 10, the other end of the a drainage pipe 11 is connected with a first drainage pipe 7,a drainage pipe 11, and a valve for controlling low-pressure drainage circulation is arranged on the drainage pipe 11. The low-pressure water-adding and draining water in the first water-draining pipe 7 sequentially passes through the a drainage pipe 11, the a distributor 10 and the a injection pipe 9 to be fully mixed with the condensation water in the low-pressure side condenser 1, the low-pressure water-adding and draining temperature in the first water-draining pipe 7 is higher than the condensation water temperature in the low-pressure side condenser 1, and the temperature of the condensation water can be increased after mixing.
Example 3 of the present invention: the utility model provides a two backpressure unit condensers heat recovery system, includes low pressure side condenser 1, high pressure side condenser 2, is provided with A group's pipe 3 and B group's pipe 4 between low pressure side condenser 1 and the high pressure side condenser 2, and A group's pipe 3 is connected with first heat recovery device 5, and B group's pipe 4 is connected with second heat recovery device 6, and first heat recovery device 5 is connected with first hydrophobic pipe 7, and second heat recovery device 6 is connected with second hydrophobic pipe 8.
The first heat recovery device 5 comprises 3 a injection pipes 9, a distributor 10 and a drainage pipe 11, wherein the a injection pipes 9 are connected with one end of the a drainage pipe 11 through the a distributor 10, and the other end of the a drainage pipe 11 is connected with the first drainage pipe 7.
The second heat recovery device 6 comprises 3 b injection pipes 12, a b distributor 13 and a b drainage pipe 14, wherein the b injection pipes 12 are connected with one end of the b drainage pipe 14 through the b distributor 13, the other end of the b drainage pipe 14 is connected with the second drainage pipe 8, and a valve for controlling low-pressure drainage circulation is arranged on the b drainage pipe 14. The low-pressure water-adding and draining water in the second water-draining pipe 8 sequentially passes through the b drainage pipe 14, the b distributor 13 and the b injection pipe 12 to be fully mixed with the condensed water in the low-pressure side condenser 1, the low-pressure water-adding and draining temperature in the second water-draining pipe 8 is higher than the temperature of the condensed water in the low-pressure side condenser 1, and the temperature of the condensed water can be increased after mixing.
The group A pipe 3 and the group B pipe 4 comprise 3 connecting pipes 23, each connecting pipe 23 comprises a front pipe section 15, a middle pipe section 16 and a rear pipe section 17, one end of the front pipe section 15 is connected with the low-pressure side condenser 1, and the other end of the front pipe section 15 is connected with one end of the middle pipe section 16; one end of the middle pipe section 16 is connected with one end of the rear pipe section 17; one end of the rear pipe section 17 is connected with the high-pressure side condenser 2, and the first heat returning device 5 is connected with the middle pipe section 16 of the group A pipe 3; the second heat recovery device 6 is connected with the middle pipe section 16 in the group B pipe 4.
Example 4 of the present invention: the utility model provides a two backpressure unit condensers heat recovery system, includes low pressure side condenser 1, high pressure side condenser 2, is provided with A group's pipe 3 and B group's pipe 4 between low pressure side condenser 1 and the high pressure side condenser 2, and A group's pipe 3 is connected with first heat recovery device 5, and B group's pipe 4 is connected with second heat recovery device 6, and first heat recovery device 5 is connected with first hydrophobic pipe 7, and second heat recovery device 6 is connected with second hydrophobic pipe 8. The first heat recovery device 5 comprises 3 a injection pipes 9, a distributor 10 and a drainage pipe 11, wherein the a injection pipes 9 are connected with one end of the a drainage pipe 11 through the a distributor 10, and the other end of the a drainage pipe 11 is connected with the first drainage pipe 7. The second heat recovery device 6 comprises 3 b injection pipes 12, a b distributor 13 and a b drainage pipe 14, wherein the b injection pipes 12 are connected with one end of the b drainage pipe 14 through the b distributor 13, and the other end of the b drainage pipe 14 is connected with the second drainage pipe 8. The group A pipe 3 and the group B pipe 4 comprise 3 connecting pipes 23, each connecting pipe 23 comprises a front pipe section 15, a middle pipe section 16 and a rear pipe section 17, one end of the front pipe section 15 is connected with the low-pressure side condenser 1, and the other end of the front pipe section 15 is connected with one end of the middle pipe section 16; one end of the middle pipe section 16 is connected with one end of the rear pipe section 17; one end of the rear pipe section 17 is connected with the high-pressure side condenser 2, and the first heat returning device 5 is connected with the middle pipe section 16 of the group A pipe 3; the second heat recovery device 6 is connected with the middle pipe section 16 in the group B pipe 4. The cross-sectional diameter of the intermediate tube section 16 is greater than the cross-sectional diameters of the front tube section 15 and the rear tube section 17. The cross-sectional diameter of the front tube section 15 is the same as the cross-sectional diameter of the rear tube section 17. The condenser also comprises a first heating device 18, a second heating device 19 and a third heating device 20, wherein the second heating device 19 and the third heating device 20 are connected with the first heating device 18, the second heating device 19 is connected with the low-pressure side condenser 1, and the third heating device 20 is connected with the high-pressure side condenser 2.
Example 5 of the present invention: the utility model provides a two backpressure unit condensers heat recovery system, includes low pressure side condenser 1, high pressure side condenser 2, is provided with group A pipe 3 and group B pipe between low pressure side condenser 1 and the high pressure side condenser 2, and group A pipe 3 is connected with first heat recovery device 5, and group B pipe 4 is connected with second heat recovery device 6, and first heat recovery device 5 is connected with first hydrophobic pipe 7, and second heat recovery device 6 is connected with second hydrophobic pipe 8. The first heat recovery device 5 comprises 3 a injection pipes 9, a distributor 10 and a drainage pipe 11, wherein the a injection pipes 9 are connected with one end of the a drainage pipe 11 through the a distributor 10, and the other end of the a drainage pipe 11 is connected with the first drainage pipe 7. The second heat recovery device 6 comprises 3 b injection pipes 12, a b distributor 13 and a b drainage pipe 14, wherein the b injection pipes 12 are connected with one end of the b drainage pipe 14 through the b distributor 13, and the other end of the b drainage pipe 14 is connected with the second drainage pipe 8. The group A pipe 3 and the group B pipe 4 comprise 3 connecting pipes 23, each connecting pipe 23 comprises a front pipe section 15, a middle pipe section 16 and a rear pipe section 17, one end of the front pipe section 15 is connected with the low-pressure side condenser 1, and the other end of the front pipe section 15 is connected with one end of the middle pipe section 16; one end of the middle pipe section 16 is connected with one end of the rear pipe section 17; one end of the rear pipe section 17 is connected with the high-pressure side condenser 2, and the first heat returning device 5 is connected with the middle pipe section 16 of the group A pipe 3; the second heat recovery device 6 is connected with the middle pipe section 16 in the group B pipe 4. The cross-sectional diameter of the intermediate tube section 16 is greater than the cross-sectional diameters of the front tube section 15 and the rear tube section 17. The cross-sectional diameter of the front tube section 15 is the same as the cross-sectional diameter of the rear tube section 17. The condenser also comprises a first heating device 18, a second heating device 19 and a third heating device 20, wherein the second heating device 19 and the third heating device 20 are connected with the first heating device 18, the second heating device 19 is connected with the low-pressure side condenser 1, and the third heating device 20 is connected with the high-pressure side condenser 2. The first heating device 18 includes an a low-pressure heater 24 and a B low-pressure heater 25; the second heating device 19 includes a C low-pressure heater 26 and a D low-pressure heater 27; the third heating device 20 includes an E low-pressure heater 28 and an F low-pressure heater 29, the a low-pressure heater 24 is connected with the B low-pressure heater 25 through a pipe, the B low-pressure heater 25 is connected with the C low-pressure heater 26 and the E low-pressure heater 28, respectively, the C low-pressure heater 26 is connected with the D low-pressure heater 27, and the E low-pressure heater 28 is connected with the F low-pressure heater 29. Each connecting pipe 23 is provided with a spoiler 21. The outlet ends of the group A pipe 3 and the group B pipe 4 or the inside of the high-pressure side condenser 2 are provided with a mixed flow device 22. Valves for controlling low-pressure drainage circulation are arranged on the first drainage pipe 7, the second drainage pipe 8, the a drainage pipe 11 and the b drainage pipe 14.
The working principle of one embodiment of the invention is as follows:
the low-pressure drain water is discharged into the low-pressure heater 25 through the low-pressure heater 24, is discharged into the low-pressure heater 26 or the low-pressure heater 28 through a pipeline through the low-pressure drain water of the low-pressure heater 25, is discharged into the low-pressure heater 27 through the low-pressure drain water of the low-pressure heater 26, and is discharged into the low-pressure heater 29 through the low-pressure drain water of the low-pressure heater 28.
When the system of the invention operates normally, the low-pressure drain water from the D low-pressure heater 27 is led to the connecting pipe 23 of the group A pipe 3 through the first heat recovery device 5, and the low-pressure drain water led by the first heat recovery device 5 is mixed with the condensed water from the low-pressure condenser 1 in the connecting pipe 23 of the group A pipe 3; the low-pressure drain water from the F low-pressure heater 29 is led to the connecting pipe 23 of the group B pipe 4 through the second heat recovery device 6, and the low-pressure drain water led through the second heat recovery device 6 is mixed with the condensate water from the low-pressure side condenser 1 in the connecting pipe 23 of the group B pipe 4. After the condensation water and the low-pressure water are mixed, the temperature of the condensation water can be increased, and after the condensation water and the low-pressure water are mixed, the condensation water flows into the high-pressure side condenser 2 through the connecting pipe 23 by utilizing the water level difference between the low-pressure side condenser 1 and the high-pressure side condenser 2.
The pipe section near the outlet end of the first hydrophobic pipe 7 is provided with a valve, the pipe section near the outlet end of the second hydrophobic pipe 8 is also provided with a valve, and the valves arranged on the pipe sections near the outlet ends of the first hydrophobic pipe 7 and the second hydrophobic pipe 8 are respectively controlled, so that the low-pressure water adding from the D low-pressure heater 27 can not enter the low-pressure side condenser 1 through the first hydrophobic pipe 7 and the low-pressure water adding from the F low-pressure heater 29 can not enter the high-pressure side condenser 2 through the second hydrophobic pipe 6 in the normal operation of the system.
When the first heat returning device 5 of the system of the invention fails, the valve arranged on the a drainage tube 11 is closed, and the valve arranged on the tube section close to the outlet end of the first drainage tube 7 is opened, so that the low-pressure water from the D low-pressure heater 27 is directly conveyed into the low-pressure side condenser 1 through the first drainage tube 7.
When the second heat returning device 6 of the system of the invention fails, the valve arranged on the b drainage tube 14 is closed, and the valve arranged on the tube section close to the outlet end of the second drainage tube 8 is opened, so that the low-pressure water from the F low-pressure heater 29 is directly conveyed into the high-pressure side condenser 2 through the second conveying tube 8.
Claims (6)
1. The heat recovery system of the condenser of the double back pressure units is characterized by comprising a low-pressure side condenser (1) and a high-pressure side condenser (2), wherein an A group pipe (3) and a B group pipe (4) are arranged between the low-pressure side condenser (1) and the high-pressure side condenser (2), the A group pipe (3) is connected with a first heat recovery device (5), the B group pipe (4) is connected with a second heat recovery device (6), the first heat recovery device (5) is connected with a first hydrophobic pipe (7), and the second heat recovery device (6) is connected with a second hydrophobic pipe (8); the first heat recovery device (5) comprises 3 a injection pipes (9), a distributor (10) and a drainage pipe (11), wherein the a injection pipes (9) are connected with one end of the a drainage pipe (11) through the a distributor (10), and the other end of the a drainage pipe (11) is connected with the first drainage pipe (7); the second heat recovery device (6) comprises 3 b injection pipes (12), a b distributor (13) and a b drainage pipe (14), wherein the b injection pipes (12) are connected with one end of the b drainage pipe (14) through the b distributor (13), and the other end of the b drainage pipe (14) is connected with the second drainage pipe (8); the group A pipe (3) and the group B pipe (4) comprise 3 connecting pipes (23), the connecting pipes (23) comprise a front pipe section (15), a middle pipe section (16) and a rear pipe section (17), one end of the front pipe section (15) is connected with the low-pressure side condenser (1), and the other end of the front pipe section (15) is connected with one end of the middle pipe section (16); one end of the middle pipe section (16) is connected with one end of the rear pipe section (17); one end of the rear pipe section (17) is connected with the high-pressure side condenser (2), and the first heat returning device (5) is connected with the middle pipe section (16) of the group A pipe (3); the second heat returning device (6) is connected with a middle pipe section (16) in the group B pipe (4); the system further comprises a first heating device (18), a second heating device (19) and a third heating device (20), wherein the second heating device (19) and the third heating device (20) are connected with the first heating device (18), the second heating device (19) is connected with the low-pressure side condenser (1), and the third heating device (20) is connected with the high-pressure side condenser (2).
2. A dual back pressure unit condenser regenerator system according to claim 1, characterized in that the cross-sectional diameter of the intermediate tube section (16) is larger than the cross-sectional diameters of the front tube section (15) and the rear tube section (17).
3. The condenser regenerator system of a double back pressure unit according to claim 1, characterized in that the cross-sectional diameter of the front tube section (15) is the same as the cross-sectional diameter of the rear tube section (17).
4. A dual backpressure unit condenser regenerator system as claimed in claim 1, wherein said first heating device (18) comprises a low pressure heater (24) and B low pressure heater (25); the second heating device (19) comprises a C low-pressure heater (26) and a D low-pressure heater (27); the third heating device (20) comprises an E low-pressure heater (28) and an F low-pressure heater (29), the A low-pressure heater (24) is connected with a B low-pressure heater (25) through a pipeline, the B low-pressure heater (25) is respectively connected with a C low-pressure heater (26) and the E low-pressure heater (28), the C low-pressure heater (26) is connected with a D low-pressure heater (27), and the E low-pressure heater (28) is connected with the F low-pressure heater (29).
5. The condenser heat recovery system of claim 1, wherein each connecting pipe (23) is provided with a turbulence device (21).
6. The heat recovery system of a condenser with double back pressure units according to claim 5, wherein a mixed flow device (22) is arranged at the outlet ends of the group A pipes (3) and the group B pipes (4) or in the condenser (2) at the high pressure side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810560560.0A CN108645237B (en) | 2018-05-25 | 2018-05-25 | Double back pressure unit condenser heat recovery system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810560560.0A CN108645237B (en) | 2018-05-25 | 2018-05-25 | Double back pressure unit condenser heat recovery system |
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| CN108645237A CN108645237A (en) | 2018-10-12 |
| CN108645237B true CN108645237B (en) | 2023-10-24 |
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|---|---|---|---|---|
| JP2009052867A (en) * | 2007-08-29 | 2009-03-12 | Toshiba Corp | Multistage pressure condenser |
| CN105865219A (en) * | 2016-04-19 | 2016-08-17 | 刘子旺 | Multi-stage hot-pressing type vacuum pumping system |
| CN205980837U (en) * | 2016-08-22 | 2017-02-22 | 华电莱州发电有限公司 | Two backpressure condensers of heat energy -saving type return |
| CN107524484A (en) * | 2017-08-11 | 2017-12-29 | 上海电气电站设备有限公司 | The low flow resistance double pressure condenser of hydroecium among a kind of merging |
| CN206862154U (en) * | 2017-04-28 | 2018-01-09 | 程琛 | A kind of energy-saving condenser steam injection vacuum system |
-
2018
- 2018-05-25 CN CN201810560560.0A patent/CN108645237B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009052867A (en) * | 2007-08-29 | 2009-03-12 | Toshiba Corp | Multistage pressure condenser |
| CN105865219A (en) * | 2016-04-19 | 2016-08-17 | 刘子旺 | Multi-stage hot-pressing type vacuum pumping system |
| CN205980837U (en) * | 2016-08-22 | 2017-02-22 | 华电莱州发电有限公司 | Two backpressure condensers of heat energy -saving type return |
| CN206862154U (en) * | 2017-04-28 | 2018-01-09 | 程琛 | A kind of energy-saving condenser steam injection vacuum system |
| CN107524484A (en) * | 2017-08-11 | 2017-12-29 | 上海电气电站设备有限公司 | The low flow resistance double pressure condenser of hydroecium among a kind of merging |
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| CN108645237A (en) | 2018-10-12 |
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