Steam supply system
By using the hydrophobic water generated on the main pipeline and the condensate generated by the user after using the low-temperature steam in the steam supply system as the cooling water source for the water spray reducer, the inefficiency problem caused by the use of room temperature desalination water in the prior art is solved, and more efficient steam supply and full utilization of resources are achieved.
Patent Information
- Application Number
- CN202421729452.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-22
AI Technical Summary
In the existing centralized steam supply system, the use of room temperature desalination water as the water spray source, resulting in a large temperature difference between steam and cooling water, an increase in heat transfer entropy production, and a low efficiency. At the same time, the hydrophobic water generated by the heat dissipation of the steam network and the condensate generated by the user after using steam is directly discharged, which lacks utilization.
A steam supply system is designed to use the water-sprayed water generated on the main pipeline and the condensate generated by the user after using the low-temperature steam as a source of cooling water to cool the steam, reduce the energy consumption of the steam supply system and improve efficiency.
By using the recovered water generated on the steam pipe network to cool down, the dependence on desalinated water at room temperature is reduced, the heat transfer entropy production is reduced, the efficiency of the steam supply system is improved, and the previously wasted hydrophobic and condensate water is fully utilized.
Smart Images
Figure CN222963749U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of steam, and particularly relates to a steam supply system. Background Technique
[0002] Steam is the main heat source in the industrial field. With the construction of domestic industrial parks, the demand for steam is increasing. The decentralized boiler steam supply is gradually phased out, and the proportion of centralized steam supply is gradually increasing.
[0003] The centralized steam supply system often includes users with different steam usage parameters, such as different pressure and temperature requirements. Different users use the same steam pipe network. To meet the steam usage requirements of all users, the steam supply parameters need to be higher than the highest steam usage parameters. At this time, the thermal users with lower steam usage parameters need to adopt the water spray desuperheating measure to reduce the steam parameters to the required parameters before they can be used. At present, normal temperature desalted water is mainly used as the water spray source, resulting in a large temperature difference between the steam and the desuperheating water, an increase in heat transfer entropy production, and low efficiency. Moreover, the steam pipe network itself will produce drain water with a certain temperature due to heat dissipation, and the condensate water generated after the thermal users use steam is often directly discharged, lacking utilization.
[0004] Therefore, it is urgent to design a steam supply system to solve the problems mentioned above, that is, using normal temperature desalted water as the water spray source, resulting in a large temperature difference between the steam and the desuperheating water, an increase in heat transfer entropy production, low efficiency, and the direct discharge of drain water with a certain temperature generated by the steam pipe network itself due to heat dissipation and the condensate water generated after the thermal users use steam, lacking utilization. Content of the Utility Model
[0005] To solve the technical problems mentioned in the background technique, that is, using normal temperature desalted water as the water spray source, resulting in a large temperature difference between the steam and the desuperheating water, an increase in heat transfer entropy production, low efficiency, and the direct discharge of drain water with a certain temperature generated by the steam pipe network itself due to heat dissipation and the condensate water generated after the thermal users use steam, lacking utilization, a steam supply system is provided to solve the above problems.
[0006] To achieve the above purpose, the specific technical solution of the steam supply system of the utility model is as follows:
[0007] A steam supply system includes a heat source plant. The heat source plant is connected to a main pipeline. A high-temperature steam user is connected to the main pipeline. A low-temperature steam user is also connected to the main pipeline. A water spray desuperheater is further arranged between the low-temperature steam user and the main pipeline. The drain water generated on the main pipeline and / or the condensate water generated after the low-temperature steam user uses steam flows back to the water spray desuperheater. The water spray desuperheater cools the steam on the main pipeline and conveys the cooled steam on the main pipeline to the low-temperature steam user for use.
[0008] Further, it further includes a condensate tank. The desuperheater is provided with a steam inlet end and a steam outlet end. The steam inlet end is connected to the main pipeline, and the steam outlet end is connected to the inlet end of the low-temperature steam user. The desuperheater is also provided with a desuperheating water inlet. One end of the condensate tank is connected to the outlet end of the low-temperature steam user, and the other end of the condensate tank is connected to the desuperheating water inlet.
[0009] Further, it further includes a drain tank. The desuperheater is provided with a steam inlet end and a steam outlet end. The steam inlet end is connected to the main pipeline, and the steam outlet end is connected to the inlet end of the low-temperature steam user. The desuperheater is also provided with a desuperheating water inlet. One end of the drain tank is connected to the main pipeline, and the other end of the drain tank is connected to the desuperheating water inlet.
[0010] Further, it further includes a condensate tank and a drain tank. The desuperheater is provided with a steam inlet end and a steam outlet end. The steam inlet end is connected to the main pipeline, and the steam outlet end is connected to the inlet end of the low-temperature steam user. The desuperheater is also provided with a desuperheating water inlet. One end of the condensate tank is connected to the outlet end of the low-temperature steam user, one end of the drain tank is connected to the main pipeline, and the other ends of the condensate tank and the drain tank are both connected to the desuperheating water inlet.
[0011] Further, the steam inlet end is connected to one end of the main pipeline close to the heat source plant, and the drain tank is connected to the other end of the main pipeline far from the heat source plant.
[0012] Further, it further includes a first branch pipeline and a second branch pipeline. The first branch pipeline is used to connect the main pipeline and the high-temperature steam user, and the second branch pipeline is used to connect the main pipeline and the low-temperature steam user. The desuperheater is arranged on the second branch pipeline.
[0013] Further, it further includes a first steam valve and a second steam valve. The first steam valve is arranged on the main pipe and is arranged close to the heat source plant, and the second steam valve is arranged on the first branch pipeline.
[0014] Further, it further includes a third steam valve. The third steam valve is arranged at one end of the second branch pipeline close to the main pipeline.
[0015] Further, it further includes a first water pipe and a second water pipe. One end of the first water pipe is connected to the outlet end of the low-temperature steam user, and the other end of the first water pipe connects the condensate tank and the desuperheating water inlet in sequence. One end of the second branch water pipe is connected to the main pipeline, and the other end of the second water pipe connects the drain tank and the desuperheating water inlet in sequence.
[0016] Further, it further includes a fourth steam valve, a fifth steam valve, a first water pump and a second water pump. The fourth steam valve and the first water pump are arranged on the first water pipe, and the fifth steam valve and the second water pump are arranged on the second water pipe.
[0017] The steam supply system of the present utility model has the following advantages:
[0018] There is a main pipeline connected to a heat source plant. High-temperature steam users are connected to the main pipeline, and low-temperature steam users are also connected to the main pipeline. A spray desuperheater is provided between the low-temperature steam user and the main pipeline. The condensate generated after the hydrophobic water generated on the main pipeline and / or the low-temperature steam user is used flows back to the spray desuperheater. The spray desuperheater cools the steam on the main pipeline, and the cooled steam on the main pipeline is transported to the low-temperature steam user for use. By using the hydrophobic water on the main pipeline and the condensate water condensed after the low-temperature steam user is used to cool the steam flowing into the low-temperature steam user, compared with the prior art where desalted water is used as the spray water source for cooling, the recovered water that can fully utilize the dissipated heat can be used as the spray water source, improving the steam supply efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic structural diagram of the steam supply system of the present utility model;
[0020] Figure 2 is a schematic structural diagram of Embodiment 1 of the present utility model;
[0021] Figure 3 is a schematic structural diagram of Embodiment 2 of the present utility model;
[0022] Figure 4 is a schematic structural diagram of Embodiment 3 of the present utility model.
[0023] Description of the reference numerals in the drawings:
[0024] 1. Heat source plant; 2. High-temperature steam user; 3. Low-temperature steam user; 4. Main pipeline; 5. Spray desuperheater; 6. Condensate tank; 7. Drainage tank; 8. First branch pipeline; 9. Second branch pipeline; 10. First steam valve; 11. Second steam valve; 12. Third steam valve; 13. Fourth steam valve; 14. Fifth steam valve; 15. First water pipe; 16. Second water pipe; 17. First water pump; 18. Second water pump; 19. Third water pump. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0026] Those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means that it is within the scope of the present utility model and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.
[0027] The following refers to the attached Figure 1 to the attached Figure 4 to describe the steam supply system of the present utility model.
[0028] As Figure 1 shown, the steam supply system in the present utility model includes a heat source plant 1. The heat source plant 1 is connected to a main pipeline 4. A high-temperature steam user 2 is connected to the main pipeline 4. A low-temperature steam user 3 is also connected to the main pipeline 4. A desuperheater 5 is provided between the low-temperature steam user 3 and the main pipeline 4. The condensate generated on the main pipeline 4 and / or after the use of the low-temperature steam user 3 flows back to the desuperheater 5. The desuperheater 5 cools the steam on the main pipeline 4 and conveys the cooled steam on the main pipeline 4 to the low-temperature steam user 3 for use.
[0029] By connecting the heat source plant 1 to the main pipeline 4, connecting the high-temperature steam user 2 to the main pipeline 4, also connecting the low-temperature steam user 3 to the main pipeline 4, providing the desuperheater 5 between the low-temperature steam user 3 and the main pipeline 4, and making the condensate generated on the main pipeline 4 and / or after the use of the low-temperature steam user 3 flow back to the desuperheater 5, and the desuperheater 5 cools the steam on the main pipeline 4 and conveys the cooled steam on the main pipeline 4 to the low-temperature steam user 3 for use. By using the condensate on the main pipeline 4 and the condensate formed after the use of the low-temperature steam user 3 to cool the steam flowing into the low-temperature steam user 3, compared with the prior art where demineralized water is used as the water source for spraying to cool down, it can make full use of the recovered water with dissipated heat as the water source for spraying, thus improving the steam supply efficiency.
[0030] Furthermore, as Figure 1As shown in the figure, multiple high-temperature steam users 2 and multiple low-temperature steam users 3 can be connected to the main pipeline 4 of the steam supply system in the present utility model. The multiple high-temperature steam users 2 directly utilize the steam on the main pipeline for heating. The low-temperature steam users 3 need to spray water to reduce the temperature of the steam on the main pipeline through a water spray desuperheater 5 before they can utilize the steam for heating. In this embodiment, on the one hand, the desuperheating water used in the water spray desuperheater 5 comes from the condensate generated during the transportation of the steam on the main pipeline 4, and on the other hand, it comes from the condensate generated after the low-temperature steam users 3 use the steam. The temperature of the water in the water spray desuperheater 5 is lower than the temperature of the steam in the main pipeline 4. After the water spray desuperheater 5 sprays water to cool down the steam flowing into the low-temperature steam users 3 in the main pipeline, the cooled steam is then transported to the low-temperature steam users 3 for the users to use, improving the steam supply efficiency. In one embodiment, the desuperheating water in the water spray desuperheater 5 can also all come from the condensate generated after the low-temperature steam users 3 use the steam. In one embodiment, the desuperheating water in the water spray desuperheater 5 can all come from the condensate generated during the transportation of the steam on the main pipeline 4. In one embodiment, the desuperheating water in the water spray desuperheater 5 can come from the condensate generated during the transportation of the steam on the main pipeline 4 and the condensate generated after the low-temperature steam users 3 use the steam.
[0031] Further, as Figure 2 shown, in Embodiment 1, the desuperheating water in the water spray desuperheater 5 all comes from the condensate generated after the low-temperature steam users 3 use the steam. The steam supply system in the present utility model further includes a condensate tank 6. The water spray desuperheater 5 is provided with a steam inlet end and a steam outlet end. The steam inlet end is connected to the main pipeline 4, and the steam outlet end is connected to the inlet end of the low-temperature steam users 3. The water spray desuperheater 5 is also provided with a desuperheating water inlet. One end of the condensate tank 6 is connected to the outlet end of the low-temperature steam users 3, and the other end of the condensate tank 6 is connected to the desuperheating water inlet. By providing the condensate tank 6, the condensate generated after the low-temperature steam users 3 use the steam is stored in the condensate tank 6, and the water spray desuperheater 5 extracts the condensate from the condensate tank 6 as desuperheating water.
[0032] Further, as Figure 3 shown, in Embodiment 2, the desuperheating water in the water spray desuperheater 5 can all come from the condensate generated during the transportation of the steam on the main pipeline 4. The steam supply system in the present utility model further includes a drain tank 7. The water spray desuperheater 5 is provided with a steam inlet end and a steam outlet end. The steam inlet end is connected to the main pipeline 4, and the steam outlet end is connected to the inlet end of the low-temperature steam users 3. The water spray desuperheater 5 is also provided with a desuperheating water inlet. One end of the drain tank 7 is connected to the main pipeline 4, and the other end of the drain tank 7 is connected to the desuperheating water inlet. By providing the drain tank 7, the condensate generated during the transportation of the steam on the main pipeline 4 is stored in the drain tank 7, and the water spray desuperheater 5 extracts the condensate from the condensate tank 6 as desuperheating water.
[0033] Furthermore, as Figure 4 shown, in the third embodiment, the desuperheating water in the desuperheater 5 can come from the condensate generated during the transportation of the steam in the main pipeline 4 and the condensate generated after the use of the low-temperature steam user 3. The steam supply system in the present utility model further includes a condensate tank 6 and a drain tank 7. The desuperheater 5 is provided with a steam inlet end and a steam outlet end. The steam inlet end is connected to the main pipeline 4, and the steam outlet end is connected to the inlet end of the low-temperature steam user 3. The desuperheater 5 is also provided with a desuperheating water inlet. One end of the condensate tank 6 is connected to the outlet end of the low-temperature steam user 3, and one end of the drain tank 7 is connected to the main pipeline 4. The other ends of the condensate tank 6 and the drain tank 7 are both connected to the desuperheating water inlet. By setting the condensate tank 6, the condensate generated after the use of the low-temperature steam user 3 is stored in the condensate tank 6, and the desuperheater 5 extracts the condensate from the condensate tank 6 as desuperheating water. By setting the drain tank 7, the condensate generated during the transportation of the steam in the main pipeline 4 is stored in the drain tank 7, and the desuperheater 5 extracts the condensate from the condensate tank 6 as desuperheating water.
[0034] Furthermore, as Figures 1 to 4 shown, the steam inlet end is connected to one end of the main pipeline 4 close to the heat source plant 1, and the drain tank 7 is connected to one end of the main pipeline 4 far from the heat source plant 1. In this embodiment, the position where the drain tank 7 is connected to the main pipeline 4 should be far from the heat source plant 1 so as to obtain the condensate generated during the transportation of the steam in the main pipeline 4.
[0035] Furthermore, as Figures 1 to 4 shown, the steam supply system in the present utility model further includes a first branch pipeline 8 and a second branch pipeline 9. The first branch pipeline 8 is used to connect the main pipeline 4 and the high-temperature steam user 2, and the second branch pipeline 9 is used to connect the main pipeline 4 and the low-temperature steam user 3. The desuperheater 5 is arranged on the second branch pipeline 9. The steam supply system in the present utility model further includes a first steam valve 10 and a second steam valve 11. The first steam valve 10 is arranged on the main pipe, and the first steam valve 10 is arranged close to the heat source plant 1. The first steam valve 10 is the main valve for controlling the flow of steam in the main pipeline 4. The second steam valve 11 is arranged on the first branch pipeline 8, and the second steam valve 11 is used to control the amount of steam from the main pipeline 4 entering the high-temperature steam user 2. The steam supply system in the present utility model further includes a third steam valve 12. The third steam valve 12 is arranged at one end of the second branch pipeline 9 close to the main pipeline 4, and the third steam valve 12 is used to control the amount of steam from the main pipeline 4 entering the low-temperature steam user 3.
[0036] Furthermore, as Figures 1 to 4As shown in the figure, the steam supply system of the present utility model further includes a first water pipe 15 and a second water pipe 16. One end of the first water pipe 15 is connected to the outlet end of the low-temperature steam user 3, and the other end of the first water pipe 15 sequentially connects the condensate tank 6 and the desuperheating water inlet. One end of the second water pipe is connected to the main pipeline 4, and the other end of the second water pipe 16 sequentially connects the drain tank 7 and the desuperheating water inlet. The steam supply system of the present utility model further includes a fourth steam valve 13, a fifth steam valve 14, a first water pump 17 and a second water pump 18. The fourth steam valve 13 and the first water pump 17 are arranged on the first water pipe 15, and the fifth steam valve 14 and the second water pump 18 are arranged on the second water pipe 16.
[0037] The condensate water condensed after the use of the low-temperature steam user 3 enters the condensate tank 6 through the first water pipe 15. The condensate water in the condensate tank 6 is pumped into the spray desuperheater 5 through the first water pipe 15 under the action of the first water pump 17 for use as desuperheating water. The drain water generated during the transportation of the steam on the main pipeline 4 enters the drain tank 7 through the second water pipe 16. The drain water in the drain tank 7 is pumped into the spray desuperheater 5 through the second water pipe 16 under the action of the second water pump 18 for use as desuperheating water. When the desuperheating water of the spray desuperheater 5 comes from the drain water generated during the transportation of the steam on the main pipeline 4 and the condensate water condensed after the use of the low-temperature steam user 3, a third water pump 19 can be shared to pump water into the spray desuperheater 5.
[0038] Obviously, the above embodiments of the present utility model are only examples for clearly explaining the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.
Claims
1. A steam supply system, characterized in that: It includes a heat source plant, which is connected to a main line, which is connected to a high-temperature steam user, which is also connected to a low-temperature steam user, and a water spray cooler is arranged between the low-temperature steam user and the main line. The drain water produced on the main line and / or the condensate produced after the use of the low-temperature steam user flows back to the water spray cooler, which cools the steam on the main line and delivers the cooled steam on the main line to the low-temperature steam user for use.
2. The steam supply system according to claim 1, characterized in that: It also includes a condensate tank. The water spray desuperheater is provided with a steam inlet and a steam outlet. The steam inlet is connected to the main pipeline, and the steam outlet is connected to the inlet of the low-temperature steam user. The water spray desuperheater is also provided with a cooling water inlet. One end of the condensate tank is connected to the outlet of the low-temperature steam user, and the other end of the condensate tank is connected to the cooling water inlet.
3. The steam supply system according to claim 1, characterized in that: It also includes a drain water tank. The water spray desuperheater is provided with a steam inlet and a steam outlet. The steam inlet is connected to the main pipeline, and the steam outlet is connected to the inlet of the low-temperature steam user. The water spray desuperheater is also provided with a cooling water inlet. One end of the drain water tank is connected to the main pipeline, and the other end of the drain water tank is connected to the cooling water inlet.
4. The steam supply system according to claim 1, characterized in that: It also includes a condensate tank and a drain tank. The water spray desuperheater is provided with a steam inlet and a steam outlet. The steam inlet is connected to the main pipeline, and the steam outlet is connected to the inlet of the low-temperature steam user. The water spray desuperheater is also provided with a cooling water inlet. One end of the condensate tank is connected to the outlet of the low-temperature steam user, and one end of the drain tank is connected to the main pipeline. The other end of the condensate tank and the other end of the drain tank are both connected to the cooling water inlet.
5. The steam supply system according to claim 3 or 4, characterized in that: The steam inlet end is connected to the end of the main pipeline close to the heat source plant, and the drain tank is connected to the end of the main pipeline far away from the heat source plant.
6. The steam supply system according to claim 2, characterized in that: It also includes a first branch pipeline and a second branch pipeline. The first branch pipeline is used to connect the main pipeline and the high-temperature steam user, and the second branch pipeline is used to connect the main pipeline and the low-temperature steam user. The water spray desuperheater is arranged on the second branch pipeline.
7. The steam supply system according to claim 6, characterized in that: It also includes a first steam valve and a second steam valve. The first steam valve is arranged on the main pipe, the first steam valve is arranged close to the heat source plant, and the second steam valve is arranged on the first branch pipe.
8. The steam supply system according to claim 6, characterized in that: It also includes a third steam valve, which is arranged on one end of the second branch pipeline close to the main pipeline.
9. The steam supply system according to claim 4, characterized in that: It also includes a first water pipe and a second water pipe, one end of the first water pipe is connected to the outlet end of the low-temperature steam user, and the other end of the first water pipe is connected to the condensate water tank and the cooling water inlet in sequence, one end of the second water branch pipe is connected to the main line, and the other end of the second water pipe is connected to the drain water tank and the cooling water inlet in sequence.
10. The steam supply system according to claim 9, characterized in that: It also includes a fourth steam valve, a fifth steam valve, a first water pump and a second water pump. The fourth steam valve and the first water pump are arranged on the first water pipe, and the fifth steam valve and the second water pump are arranged on the second water pipe.