Low-pressure steam pressure increasing and temperature rising device
By designing a low-pressure steam pressure lifting and heating device, using components such as steam heating unit, steam water heat exchanger, condensate tank and boosting unit, the problem of high-pressure steam is solved, and high-pressure steam is achieved The supply and output and expansion of user scope have reduced investment in the pipeline network.
Patent Information
- Application Number
- CN202411728909.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-02-14
AI Technical Summary
In the central heating pipeline network, the steam pressure temperature required by the end users is high, which leads to the need to improve the steam quality at the heat source and the temperature increase and pressure increase of the pipeline network, which increases investment and causes users to use high-quality steam. waste.
Design a low-pressure steam pressure lifting and heating device, including a low-pressure steam access end, a high-pressure steam output end, a steam heating unit, a steam heat exchanger, a condensate tank, a boosting unit and a steam separator, through the connection and regulating valve of these components The setting of the low-pressure steam is achieved to increase the pressure and heat up the temperature.
It has achieved the pressure-raising of low-pressure steam and the supply of high-pressure steam, expanded the user range of centralized heating, and reduced the design parameters and investment of centralized heating pipeline networks.
Smart Images
Figure CN119436111A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of centralized heating, and in particular relates to a low-pressure steam pressure-raising and temperature-raising device. Background Art
[0002] At present, under the general environment of energy conservation, emission reduction and environmental protection, the country vigorously promotes the construction of centralized heating projects. However, during the construction of centralized heating pipelines, a small number of end users often require steam with higher pressure and temperature, and it is necessary to improve the steam quality at the heat source, and also to increase the temperature and pressure of the centralized heating pipelines. This not only increases the investment in centralized heating pipelines, but also requires most users to cool and reduce the pressure of high-quality steam, resulting in waste. Therefore, a device for increasing the pressure and temperature of low-pressure steam is needed, which can use the low-pressure steam of centralized heating to provide users with high-pressure steam. Summary of the invention
[0003] In order to solve the above technical problems, the present invention provides a low-pressure steam pressure and temperature raising device.
[0004] The specific plan is as follows: A low-pressure steam pressure-raising and temperature-raising device comprises a low-pressure steam access end, a high-pressure steam output end, a steam temperature-raising unit, a steam-water heat exchanger, a condensate tank, a pressure-raising unit and a steam-water separator, wherein the low-pressure steam access end is connected to a steam-water heat exchanger pipeline via a steam temperature-raising unit, the steam-water heat exchanger is connected to a condensate tank pipeline, the condensate tank is connected to a steam-water heat exchanger pipeline via a pressure-raising unit, the steam-water heat exchanger is connected to a steam-water separator pipeline, the steam-water separator is connected to a condensate tank pipeline, and the steam-water separator is also connected to a high-pressure steam output end pipeline via a steam temperature-raising unit.
[0005] The steam-water heat exchanger is provided with a first regulating valve group, and the steam-water heat exchanger is connected to the condensate tank pipeline through the first regulating valve group. The steam-water separator is provided with a second regulating valve group and a third regulating valve group, and the steam-water separator is connected to the steam heating unit pipeline through the second regulating valve group, and the steam-water separator is connected to the condensate tank pipeline through the third regulating valve group. The condensate tank is provided with a soft water input end, a first electric shut-off valve, a soft water pump, a soft water input regulating valve group, a drain discharge end and a drain discharge regulating valve group, the soft water input end is connected to the soft water pump through the first electric shut-off valve, the soft water pump is connected to the condensate tank pipeline through the soft water input regulating valve group, and the drain discharge end is connected to the condensate tank pipeline through the drain discharge regulating valve group.
[0006] The first regulating valve group, the second regulating valve group, the third regulating valve group, the soft water input regulating valve group and the drain discharge regulating valve group all include a regulating valve, a first shut-off valve, a second shut-off valve and a third shut-off valve. The first shut-off valve, the regulating valve and the second shut-off valve are connected in series in sequence, and the first shut-off valve, the regulating valve and the second shut-off valve are connected in series and then connected in parallel with the third shut-off valve.
[0007] The condensate tank is connected to the boosting unit pipeline, and the boosting unit includes at least two valve groups, each valve group is connected in parallel, and each valve group includes a fourth shut-off valve, a boosting pump, a check valve and a second electric shut-off valve, and the fourth shut-off valve, the boosting pump, the check valve and the second electric shut-off valve are connected in series in sequence.
[0008] The steam-water heat exchanger is provided with a heat exchange steam inlet pipe, a heat exchange steam exhaust pipe, a heat exchange water inlet pipe and a steam-water mixed delivery pipe. The heat exchange steam inlet pipe is provided with a third electric shut-off valve, the heat exchange water inlet pipe is provided with a fourth electric shut-off valve, and the steam-water mixed delivery pipe is provided with a fifth electric shut-off valve. The steam heating unit is connected to the heat exchange steam inlet pipe through the third electric shut-off valve, the boosting unit is connected to the heat exchange water inlet pipe through the fourth electric shut-off valve, and the steam-water mixed delivery pipe is connected to the steam-water separator pipeline through the fifth electric shut-off valve.
[0009] The steam heating unit includes a steam-steam heat exchanger and a steam heater. The steam-steam heat exchanger includes a first heat exchange input pipe, a first heat exchange output pipe, a second heat exchange input pipe and a second heat exchange output pipe. The first heat exchange input pipe is provided with a sixth electric shut-off valve. The low-pressure steam access end is connected to the first heat exchange input pipe through the sixth electric shut-off valve. The first heat exchange output pipe is connected to the steam-water heat exchanger pipeline. The second heat exchange input pipe is provided with a seventh electric shut-off valve. The steam-water separator is connected to the second heat exchange input pipe through the seventh electric shut-off valve. The second heat exchange output pipe is connected to the steam heater pipeline. The steam heater is provided with an eighth electric shut-off valve. The steam heater is connected to the high-pressure steam output end pipeline through the eighth electric shut-off valve.
[0010] The present invention discloses a low-pressure steam pressure-raising and temperature-raising device, in which low-pressure steam from a centralized heat source is first passed through a steam-steam heat exchanger and a steam-water heat exchanger to condense condensate and then enters a condensate tank, and then is pressurized by a booster pump, and then is heated by a steam-water heat exchanger, a steam-water separator, a steam-steam heat exchanger and a steam heater, and high-pressure steam is supplied to the outside, so that a centralized heating network can take into account a large number of low-pressure steam users while taking into account a small number of high-pressure steam users, thereby increasing the user range of centralized heating and reducing the investment in the centralized heating network by reducing the design parameters of the centralized heating network. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1It is the overall structural block diagram of the present invention. DETAILED DESCRIPTION
[0012] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the implementation of the present invention, not all of the implementations. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0013] like Figure 1 As shown, a low-pressure steam pressure and temperature raising device comprises a low-pressure steam access end 29, a high-pressure steam output end 28, a steam temperature raising unit 27, a steam-water heat exchanger 2, a condensate tank 1, a pressure raising unit 32 and a steam-water separator 3, wherein the low-pressure steam access end 29 is connected to the steam-water heat exchanger 2 through a pipeline through the steam temperature raising unit 27, the steam-water heat exchanger 2 is connected to the condensate tank 1 through a pipeline, the condensate tank 1 is connected to the steam-water heat exchanger 2 through a pipeline through the pressure raising unit 32, the steam-water heat exchanger 2 is connected to the steam-water separator 3 through a pipeline, the steam-water separator 3 is connected to the condensate tank 1 through a pipeline, and the steam-water separator 3 is also connected to the high-pressure steam output end 28 through a pipeline through the steam temperature raising unit 27.
[0014] The low-pressure steam from the centralized pipe network heat source passes through the low-pressure steam access port 29 and the steam heating unit 27 for heat exchange, and then enters the steam-water heat exchanger 2 for heat exchange. The steam after heat exchange enters the condensate tank 1, and the condensed water in the condensate tank 1 is pressurized by the boosting unit 32 and then enters the steam-water heat exchanger 2 for heat exchange again. After the heat exchange, the temperature of the condensed water increases and becomes a steam-water mixed state, and the steam and water are separated by the steam-water separator 3. The separated water flows back to the condensate tank 1 again, and the separated steam is heated by the steam heating unit 27 and then supplied to heat users in need through the high-pressure steam output port 28.
[0015] The steam-water heat exchanger 2 is provided with a first regulating valve group 22, and the steam-water heat exchanger 2 is connected to the condensate tank 1 pipeline through the first regulating valve group 22. The steam-water separator 3 is provided with a second regulating valve group 26 and a third regulating valve group 25. The steam-water separator 3 is connected to the steam heating unit 27 pipeline through the second regulating valve group 26, and the steam-water separator 3 is connected to the condensate tank 1 pipeline through the third regulating valve group 25. The condensate tank 1 is provided with a soft water input end 30, a first electric shut-off valve 21, a soft water pump 7, a soft water input regulating valve group 23, a drain discharge end 31 and a drain discharge regulating valve group 24. The soft water input end 30 is connected to the soft water pump 7 through the first electric shut-off valve 21, the soft water pump 7 is connected to the condensate tank 1 pipeline through the soft water input regulating valve group 23, and the drain discharge end 31 is connected to the condensate tank 1 pipeline through the drain discharge regulating valve group 24.
[0016] The first regulating valve group 22, the second regulating valve group 26, the third regulating valve group 25, the soft water input regulating valve group 23 and the hydrophobic discharge regulating valve group 24 all include a regulating valve 18, a first shut-off valve 17, a second shut-off valve 19 and a third shut-off valve 20. The first shut-off valve 17, the regulating valve 18 and the second shut-off valve 19 are connected in series in sequence, and the first shut-off valve 17, the regulating valve 18 and the second shut-off valve 19 are connected in series and then connected in parallel with the third shut-off valve 20.
[0017] The condensate tank 1 is connected to the boosting unit 32 by a pipeline. The boosting unit 32 includes at least two valve groups, each of which is connected in parallel. Each valve group includes a fourth shut-off valve 10, a boosting pump 6, a check valve 8 and a second electric shut-off valve 9. The fourth shut-off valve 10, the boosting pump 6, the check valve 8 and the second electric shut-off valve 9 are connected in series in sequence.
[0018] The steam-water heat exchanger 2 is provided with a heat exchange steam inlet pipe 33, a heat exchange steam exhaust pipe 34, a heat exchange water inlet pipe 35 and a steam-water mixed delivery pipe 36. The heat exchange steam inlet pipe 33 is provided with a third electric shut-off valve 16, the heat exchange water inlet pipe 35 is provided with a fourth electric shut-off valve 11, and the steam-water mixed delivery pipe 36 is provided with a fifth electric shut-off valve 12. The steam heating unit 27 is connected to the heat exchange steam inlet pipe 33 through the third electric shut-off valve 16, the boosting unit 32 is connected to the heat exchange water inlet pipe 35 through the fourth electric shut-off valve 11, and the steam-water mixed delivery pipe 36 is connected to the steam-water separator 3 through the fifth electric shut-off valve 12.
[0019] The steam heating unit 27 includes a steam-steam heat exchanger 4 and a steam heater 5. The steam-steam heat exchanger 4 includes a first heat exchange input pipe 38, a first heat exchange output pipe 37, a second heat exchange input pipe 40 and a second heat exchange output pipe 39. The first heat exchange input pipe 38 is provided with a sixth electric shut-off valve 15. The low-pressure steam access end 29 is connected to the first heat exchange input pipe 38 through the sixth electric shut-off valve 15. The first heat exchange output pipe 37 is connected to the steam-water heat exchanger 2 pipeline. The second heat exchange input pipe 40 is provided with a The seventh electric shut-off valve 13, the steam-water separator 3 is connected to the second heat exchange input pipe 40 through the seventh electric shut-off valve 13, the second heat exchange output pipe 39 is connected to the steam heater 5 pipeline, the steam heater 5 is provided with an eighth electric shut-off valve 14, the steam heater 5 is connected to the high-pressure steam output end 28 pipeline through the eighth electric shut-off valve 14, the steam heater 5 can heat the steam to the qualified high-pressure steam required by the user, and the steam heater 5 adopts different heating methods such as electric heating and natural gas heating.
[0020] The low-pressure steam pressure-raising and temperature-raising device of this embodiment converts the low-pressure steam provided by the centralized heat source into low-pressure condensate through the steam-steam heat exchanger 4 and the steam-water heat exchanger 2 in sequence, and then returns the condensate to the condensate tank 1 and the steam-water separator 3 to mix with the newly added softened water to complete the process from the vapor state to the liquid state. The specific working process of the low-pressure steam pressure-raising and temperature-raising device shown is: like Figure 1 As shown, low-pressure steam from a centralized heating source enters the steam-steam heat exchanger 4 through the low-pressure steam access port 29. In the steam-steam heat exchanger 4, the low-pressure steam exchanges heat with the high-pressure steam input from the second input pipe 40. After the heat exchange, the temperature of the low-pressure steam decreases, and the temperature of the high-pressure steam increases. Then, the low-pressure steam after the temperature decreases enters the steam-water heat exchanger 2. In the steam-water heat exchanger 2, the low-pressure steam exchanges heat with the condensed water from the condensed water tank. After the heat exchange, the temperature of the condensed water increases and becomes a steam in a steam-liquid mixed state. At this time, the steam in the steam-liquid mixed state is sent to the steam-water separation unit through the steam-water mixed delivery pipe 36. In the steam-water separator 3, the separated steam enters the steam heating unit 27 through the second regulating valve group 26, and the separated water flows back to the condensate tank 1 through the third regulating valve group 25; and the temperature of the low-pressure steam in the steam-water heat exchanger 2 will be further cooled and condensed into condensate, and the condensed condensate enters the condensate tank 1, the first regulating valve group 22 can adjust the amount of condensate entering the condensate tank 1, the second regulating valve group 26 can adjust the amount of steam entering the steam heating unit 27, and the third regulating valve group 25 can adjust the reflux amount flowing back to the condensate tank 1.
[0021] The condensate tank 1 is provided with a soft water input end 30. The soft water input from the soft water input end 30 passes through a soft water pump 7 and a soft water input regulating valve group 23 and is then input into the condensate tank 1. The input regulating valve group 23 can adjust the amount of soft water entering the condensate tank 1 through a regulating valve. The condensate output from the steam-water heat exchanger 2 in the condensate tank 1 is mixed with the newly added low-temperature softened water and the condensate refluxed from the steam-water separator 3 for cooling. The condensate is then pressurized by a condensate booster pump 6. The pressurized condensate enters the steam-water heat exchanger 2 for heat exchange. The heated condensate becomes a steam-water mixture and enters the steam-water separator 3. Steam and water are separated in the steam-water separator 3. The separated saturated water returns to the condensate tank 1 for recycling. The separated saturated steam enters the steam-to-steam heat exchanger 4 for further heating. The heated steam finally enters the steam heater 5 for further heating to the required temperature before being supplied to the outside.
[0022] A drain discharge port 31 is also provided on the condensate tank 1, and the condensate can be discharged through the drain discharge regulating valve group 24 and the drain discharge port 31, and the drain can be recycled according to actual conditions; in addition, the temperature of the low-pressure steam condensate is adjusted in the condensate tank by adding new softened water so as to improve the heat exchange end difference and efficiency in the steam-water heat exchanger 2, and the water level of the condensate tank is adjusted by the drain discharge regulating valve group 2.
[0023] The present invention discloses a low-pressure steam pressure-raising and temperature-raising device, which first passes low-pressure steam from a centralized heat source through a steam-steam heat exchanger and a steam-water heat exchanger to condense condensate and then enters a condensate tank, and then is pressurized by a booster pump, and then is heated by a steam-water heat exchanger, a steam-water separator, a steam-steam heat exchanger and a steam heater, and then supplies high-pressure steam to the outside, thereby realizing that a centralized heating network can take into account a large number of low-pressure steam users while also taking into account a small number of high-pressure steam users, thereby increasing the user range of centralized heating, and reducing the investment in the centralized heating network by reducing the design parameters of the centralized heating network.
[0024] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.
Claims
1. A low-pressure steam pressure and temperature raising device, characterized in that: It comprises a low-pressure steam inlet (29), a high-pressure steam outlet (28), a steam heating unit (27), a steam-water heat exchanger (2), a condensate tank (1), a pressure-increasing unit (32) and a steam-water separator (3); the low-pressure steam inlet (29) is connected to the steam-water heat exchanger (2) through a steam heating unit (27) pipeline, the steam-water heat exchanger (2) is connected to the condensate tank (1) pipeline, the condensate tank (1) is connected to the steam-water heat exchanger (2) pipeline through a pressure-increasing unit (32), the steam-water heat exchanger (2) is connected to the steam-water separator (3) pipeline, the steam-water separator (3) is connected to the condensate tank (1) pipeline, and the steam-water separator (3) is also connected to the high-pressure steam outlet (28) pipeline through a steam heating unit (27).
2. The low-pressure steam pressure and temperature raising device according to claim 1, characterized in that: The steam-water heat exchanger (2) is provided with a first regulating valve group (22), and the steam-water heat exchanger (2) is connected to the condensate tank (1) pipeline via the first regulating valve group (22). The steam-water separator (3) is provided with a second regulating valve group (26) and a third regulating valve group (25), and the steam-water separator (3) is connected to the steam heating unit (27) pipeline via the second regulating valve group (26), and the steam-water separator (3) is connected to the condensate tank (1) pipeline via the third regulating valve group (25). ) is provided with a soft water input end (30), a first electric shut-off valve (21), a soft water pump (7), a soft water input regulating valve group (23), a drain discharge end (31) and a drain discharge regulating valve group (24); the soft water input end (30) is connected to the soft water pump (7) via the first electric shut-off valve (21); the soft water pump (7) is connected to a condensate tank (1) pipeline via the soft water input regulating valve group (23); and the drain discharge end (31) is connected to a condensate tank (1) pipeline via the drain discharge regulating valve group (24).
3. The low-pressure steam pressure-raising and temperature-raising device according to claim 2 is characterized in that: The first regulating valve group (22), the second regulating valve group (26), the third regulating valve group (25), the soft water input regulating valve group (23) and the drain discharge regulating valve group (24) all comprise a regulating valve (18), a first shut-off valve (17), a second shut-off valve (19) and a third shut-off valve (20); the first shut-off valve (17), the regulating valve (18) and the second shut-off valve (19) are connected in series in sequence, and the first shut-off valve (17), the regulating valve (18) and the second shut-off valve (19) are connected in series and then connected in parallel with the third shut-off valve (20).
4. The low-pressure steam pressure and temperature raising device according to claim 1, characterized in that: The condensate tank (1) is connected to the booster unit (32) via a pipeline. The booster unit (32) comprises at least two valve groups, each of which is connected in parallel. Each valve group comprises a fourth shut-off valve (10), a booster pump (6), a check valve (8) and a second electric shut-off valve (9). The fourth shut-off valve (10), the booster pump (6), the check valve (8) and the second electric shut-off valve (9) are connected in series in sequence.
5. The low-pressure steam pressure and temperature raising device according to claim 1, characterized in that: The steam-water heat exchanger (2) is provided with a heat exchange steam inlet pipe (33), a heat exchange steam exhaust pipe (34), a heat exchange water inlet pipe (35) and a steam-water mixed delivery pipe (36); the heat exchange steam inlet pipe (33) is provided with a third electric shut-off valve (16); the heat exchange water inlet pipe (35) is provided with a fourth electric shut-off valve (11); the steam-water mixed delivery pipe (36) is provided with a fifth electric shut-off valve (12); the steam heating unit (27) is connected to the heat exchange steam inlet pipe (33) through the third electric shut-off valve (16); the boosting unit (32) is connected to the heat exchange water inlet pipe (35) through the fourth electric shut-off valve (11); and the steam-water mixed delivery pipe (36) is connected to the steam-water separator (3) through the fifth electric shut-off valve (12).
6. The low-pressure steam pressure and temperature raising device according to claim 1, characterized in that: The steam heating unit (27) comprises a steam-steam heat exchanger (4) and a steam heater (5); the steam-steam heat exchanger (4) comprises a first heat exchange input pipe (38), a first heat exchange output pipe (37), a second heat exchange input pipe (40) and a second heat exchange output pipe (39); a sixth electric shut-off valve (15) is provided on the first heat exchange input pipe (38); the low-pressure steam inlet (29) is connected to the first heat exchange input pipe (38) via the sixth electric shut-off valve (15); and the first heat exchange output pipe (37) is connected to the first heat exchange input pipe (38). ) is connected to the steam-water heat exchanger (2) through a pipeline, the second heat exchange input pipe (40) is provided with a seventh electric shut-off valve (13), the steam-water separator (3) is connected to the second heat exchange input pipe (40) through the seventh electric shut-off valve (13), the second heat exchange output pipe (39) is connected to the steam heater (5) through a pipeline, the steam heater (5) is provided with an eighth electric shut-off valve (14), and the steam heater (5) is connected to the high-pressure steam output end (28) through a pipeline through the eighth electric shut-off valve (14).