Heating system

Abstract

The utility model provides a heat supply system which comprises a heat exchange unit and a plurality of heat utilization ends, a liquid outlet of the heat exchange unit is connected with a liquid separator, and a liquid inlet of the heat exchange unit is connected with a liquid collector; the liquid separator is connected with a liquid inlet of each heat utilization end, and the liquid collector is connected with a liquid outlet of each heat utilization end; a pressure pump set is connected between at least one heat utilization end and the liquid separator, a pressure reduction pump set is connected between the heat utilization end and the liquid collector, and first throttling valves are connected between the other heat utilization ends and the liquid separator. The length of the pipeline between the heat using end connected with the pressure pump set and the liquid separator is a first length, the length of the pipeline between the heat using end connected with the first throttling valve and the liquid separator is a second length, and the first length is larger than the second length. The heat supply system is simple in structure, convenient to use, capable of effectively balancing the heat supply effects of different heat using ends, safe, stable and high in energy utilization rate.

Description

Technical Field

[0001] The present application relates to the field of heating technology, and in particular to a heating system. Background Art

[0002] The thermal power plant distributes the heating liquid step by step through the urban heating pipeline network and sends it to the heat exchange station in the community. The heat exchange station heats the heat transfer liquid through the heat exchange unit and then distributes it to the community's heat users. One heat exchange station needs to supply heat to users in multiple residential buildings in several communities for heating.

[0003] Currently, most heating systems heat a heat transfer liquid to a certain temperature and then distribute it through a distributor to heat users in different communities, buildings, and units within a jurisdiction. Generally, users closer to the distributor have better heating quality, while users farther from the distributor have poorer heating quality, which can easily lead to insufficient indoor heat. Therefore, a heating system that can balance the heating effects of different heat users is urgently needed. Utility Model Content

[0004] In view of this, the purpose of this application is to propose a heating system to solve the related problems mentioned in the background technology.

[0005] Based on the above-mentioned purpose, the present application provides a heating system, including a heat exchanger and multiple heat-using ends, the liquid outlet of the heat exchanger is connected to a liquid separator, and the liquid inlet is connected to a liquid collector; the liquid separator is connected to the liquid inlet of each of the heat-using ends, and the liquid collector is connected to the liquid outlet of each of the heat-using ends; a pressure pump group is connected between at least one of the heat-using ends and the liquid separator, and a pressure reducing pump group is connected between the heat-using end and the liquid collector, and a first throttle valve is connected between the remaining heat-using ends and the liquid separator; the length of the pipeline between the heat-using end connected to the pressure pump group and the liquid separator is a first length, and the length of the pipeline between the heat-using end connected to the first throttle valve and the liquid separator is a second length, and the first length is greater than the second length.

[0006] Furthermore, the booster pump group includes a parallel liquid inlet pipeline and a pressurizing pipeline, the liquid inlet pipeline is provided with a first shut-off valve, the pressurizing pipeline is provided with a second shut-off valve, a booster pump and a third shut-off valve in sequence, and the third shut-off valve is arranged close to the heat end.

[0007] Furthermore, the pressure reducing pump group includes a return liquid pipeline and a pressure reducing pipeline in parallel, the return liquid pipeline is provided with a fourth shut-off valve, the pressure reducing pipeline is provided with a fifth shut-off valve, a pressure reducing valve and a sixth shut-off valve in sequence, and the fifth shut-off valve is arranged close to the heat end.

[0008] Furthermore, a first dirt remover, a first pressure gauge, a seventh shut-off valve and a first flexible connecting pipe are sequentially connected between the second shut-off valve and the pressure pump, and the first flexible connecting pipe is arranged close to the pressure pump.

[0009] Furthermore, a second flexible connecting pipe, a check valve, an eighth shut-off valve, a second pressure gauge, a first pressure transmitter and a second throttle valve are sequentially connected between the boosting pump and the third shut-off valve, and the second flexible connecting pipe is arranged close to the boosting pump.

[0010] Furthermore, a first branch is connected between the first pressure gauge and the seventh shut-off valve, and a first drain valve is provided on the first branch; the booster pump is connected to a frequency converter; a second branch is connected between the second pressure gauge and the first pressure transmitter, and a second drain valve is provided on the second branch.

[0011] Furthermore, a filter is connected between the fifth shut-off valve and the pressure reducing valve.

[0012] Furthermore, a second pressure transmitter is connected between the pressure reducing valve and the sixth shut-off valve.

[0013] Furthermore, a third branch is connected between the fifth shut-off valve and the filter, and a safety valve is provided on the third branch.

[0014] Furthermore, the heating system further includes a control cabinet, which is electrically connected to the first pressure transmitter, the second pressure transmitter and the frequency conversion controller respectively.

[0015] As can be seen from the above, the heating system provided by the present application includes a heat exchanger and multiple heat-using ends, the liquid outlet of the heat exchanger is connected to a liquid separator, and the liquid inlet is connected to a liquid collector; the liquid separator is connected to the liquid inlet of each heat-using end, and the liquid collector is connected to the liquid outlet of each heat-using end; a pressure pump group is connected between at least one heat-using end and the liquid separator, a pressure reducing pump group is connected between the heat-using end and the liquid collector, and a first throttle valve is connected between the remaining heat-using ends and the liquid separator; the length of the pipeline between the heat-using end connected to the pressure pump group and the liquid separator is a first length, and the length of the pipeline between the heat-using end connected to the first throttle valve and the liquid separator is The second length, the first length is greater than the second length; by arranging a pressure pump group between the heat-using end farther from the liquid distributor and the liquid distributor, the flow rate of the heat transfer liquid at that location can be increased, sufficient heat can be provided to the heat-using end, and thus the heating effect can be improved; and by arranging a pressure-reducing pump group between the heat-using end and the liquid collector, the liquid flow rate can be reduced to ensure that the pressure of the return line can be reduced to a safe range; by arranging a first throttle valve between the heat-using end closer to the liquid distributor and the liquid distributor, the maximum flow rate of the heat transfer liquid can be limited to avoid heat waste; the cooperation of the pressure pump group and the first throttle valve can balance the heating effects between different heat-using ends. The heating system has a simple structure, is easy to use, can effectively balance the heating effects of different heat-using ends, is safe and stable, and has high energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is a schematic diagram of the structural connection of a heating system in an embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the structural connection of the pressure pump group in the embodiment of the present application;

[0019] Figure 3 This is a schematic diagram of the structural connection of the pressure reducing pump group in the embodiment of the present application;

[0020] Figure 4 This is a connection diagram of the control cabinet in an embodiment of the present application.

[0021] Reference numerals: 1, heat exchange unit; 2, hot end; 3, liquid separator; 4, liquid collector; 5, pressure pump group; 6, pressure reducing pump group; 7, first throttle valve; 8, liquid inlet pipeline; 8-1, first shut-off valve; 9, pressure pipeline; 9-1, second shut-off valve; 9-2, pressure pump; 9-3, third shut-off valve; 9-4, first dirt remover; 9-5, first pressure gauge; 9-6, seventh shut-off valve; 9-7, first flexible connecting pipe; 9-8, second flexible connecting pipe; 9-9, check valve; 9-10, eighth shut-off valve; 9-11, Second pressure gauge; 9-12, first pressure transmitter; 9-13, second throttle valve; 10, return liquid pipeline; 10-1, fourth shut-off valve; 11, pressure reducing pipeline; 11-1, fifth shut-off valve; 11-2, pressure reducing valve; 11-3, sixth shut-off valve; 11-4, filter; 11-5, second pressure transmitter; 12, first branch; 12-1, first drain valve; 13, frequency converter; 14, second branch; 14-1, second drain valve; 15, third branch; 15-1, safety valve; 16, control cabinet. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of this application more clear, this application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0023] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meanings understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] The thermal power plant distributes the heating liquid step by step through the urban heating pipeline network and sends it to the heat exchange station in the community. The heat exchange station heats the heat transfer liquid through the heat exchange unit and then distributes it to the community's heat users. One heat exchange station needs to supply heat to users in multiple residential buildings in several communities for heating.

[0025] Currently, most heating systems heat a heat transfer liquid to a certain temperature and then distribute it through a distributor to heat users in different communities, buildings, and units within a jurisdiction. Generally, users closer to the distributor have better heating quality, while users farther from the distributor have poorer heating quality, which can easily lead to insufficient indoor heat. Therefore, a heating system that can balance the heating effects of different heat users is urgently needed.

[0026] The heat-consuming end that is far away from the liquid distributor usually has a longer heating pipeline and more local resistance components, which makes the flow of heat transfer liquid unfavorable. This is especially true for heat exchange stations in old residential areas with low-rise buildings. Generally, only one set of heat exchange units is installed. In addition, the pipelines are used for a long time, and impurities and rust are serious in the pipelines, making the heating effect worse. Some technologies install a booster device in front of the liquid distributor, which can improve the overall heating effect, but it cannot balance the heating differences between different heat-consuming ends, resulting in energy waste.

[0027] Below, through specific embodiments and in combination with the attached Figures 1 to 4 The technical solution of this application is further described in detail.

[0028] In some embodiments of the present application, a heating system is provided, such as Figure 1 As shown, it includes a heat exchanger unit 1 and multiple heat-using ends 2, the liquid outlet of the heat exchanger unit 1 is connected to a liquid separator 3, and the liquid inlet is connected to a liquid collector 4; the liquid separator 3 is connected to the liquid inlet of each of the heat-using ends 2, and the liquid collector 4 is connected to the liquid outlet of each of the heat-using ends 2; a pressure pump group 5 is connected between at least one of the heat-using ends 2 and the liquid separator 3, a pressure reducing pump group 6 is connected between the heat-using end 2 and the liquid collector 4, and a first throttle valve 7 is connected between the remaining heat-using ends 2 and the liquid separator 3; the length of the pipeline between the heat-using end 2 connected to the pressure pump group 5 and the liquid separator 3 is a first length, and the length of the pipeline between the heat-using end 2 connected to the first throttle valve 7 and the liquid separator 3 is a second length, and the first length is greater than the second length.

[0029] like Figure 1 As shown, the heating system includes a heat exchanger unit 1 and multiple connected heat-using ends 2. The heat exchanger unit 1 is usually a complete set of equipment consisting of a heat exchanger, a temperature control valve group, a liquid drain valve group, a circulation pump, pipelines, valves, instruments, etc., which can convert the heat obtained from the primary network into the heat required for user life and heating.

[0030] The liquid outlet of the heat exchanger unit 1 is connected to a liquid separator 3, and the liquid inlet is connected to a liquid collector 4; the liquid separator 3 is connected to the liquid inlet of each heat-using end 2, and the liquid collector 4 is connected to the liquid outlet of each heat-using end 2, so that the heat transfer liquid can flow from the heat exchanger unit 1 to different heat-using ends 2 for heating, and then flow back to the heat exchanger unit 1 for heat exchange.

[0031] A pressure pump assembly 5 is connected between at least one hot end 2 and the liquid dispenser 3. For example, the hot end 2 or several hot ends 2 farthest from the liquid dispenser 3 are connected to the pressure pump assembly 5. A pressure reducing pump assembly 6 is connected between the hot end 2 and the liquid collector 4. A first throttle valve 7 is connected between the remaining hot ends 2 and the liquid dispenser 3. The length of the pipeline between the hot end 2 connected to the pressure pump assembly 5 and the liquid dispenser 3 is greater than the length of the pipeline between the hot end 2 connected to the first throttle valve 7 and the liquid dispenser 3.

[0032] By arranging a pressure pump group 5 between the heat-using end 2 farther away from the liquid separator 3 and the liquid separator 3, the flow rate of the heat transfer liquid at this location can be increased, sufficient heat can be provided to the heat-using end 2, and thus the heating effect can be improved. By arranging a pressure reducing pump group 6 between the heat-using end 2 and the liquid collector 4, the liquid flow rate can be reduced to ensure that the pressure of the return pipeline can be reduced to a safe range; by arranging a first throttle valve 7 between the heat-using end 2 closer to the liquid separator 3 and the liquid separator 3, the maximum flow rate of the heat transfer liquid can be limited to avoid heat waste; the pressure pump group 5 and the first throttle valve 7 cooperate to balance the heating effects of different heat-using ends 2.

[0033] This heating system has a simple structure and is easy to use. It can effectively balance the heating effects of different heat-using ends 2, is safe and stable, and has high energy utilization. A first throttle valve 7 is installed to control the heating flow rate of the near-end user, ensuring accurate heating for the near-end user and avoiding overheating caused by excessive flow and resulting energy waste. Secondly, the pipelines for the far-end users are modified, and a pressure pump group 5 and a pressure reducing pump group 6 are added to solve the problem of poor heating quality.

[0034] In some embodiments, as Figure 2 As shown, the booster pump group 5 includes a liquid inlet pipeline 8 and a pressurizing pipeline 9 in parallel, the liquid inlet pipeline 8 is provided with a first shut-off valve 8-1, and the pressurizing pipeline 9 is provided with a second shut-off valve 9-1, a booster pump 9-2 and a third shut-off valve 9-3 in sequence, and the third shut-off valve 9-3 is arranged close to the heat-using end 2.

[0035] like Figure 2 As shown, the booster pump group 5 includes a liquid inlet pipeline 8 and a pressurizing pipeline 9 connected in parallel. The liquid inlet pipeline 8 is a conventional heating pipeline. When the pressurizing pipeline 9 is closed, heating can be carried out like other pipelines at the heat-using end 2; the booster pump 9-2 can increase the pressure of the heat transfer liquid, and the pressurizing pipeline 9 can increase the flow rate of the heat transfer liquid. When the heating effect needs to be improved, the pressurizing pipeline 9 can be opened and the liquid inlet pipeline 8 can be closed; the liquid inlet pipeline 8 and the pressurizing pipeline 9 can be controlled independently. When the liquid inlet pipeline 8 or the pressurizing pipeline 9 needs to be repaired, the other pipeline can be used for heating.

[0036] In some embodiments, as Figure 3As shown, the pressure reducing pump group 6 includes a parallel return liquid pipeline 10 and a pressure reducing pipeline 11. The return liquid pipeline 10 is provided with a fourth shut-off valve 10-1, and the pressure reducing pipeline 11 is provided with a fifth shut-off valve 11-1, a pressure reducing valve 11-2 and a sixth shut-off valve 11-3 in sequence. The fifth shut-off valve 11-1 is arranged near the heat end 2.

[0037] like Figure 3 As shown, the pressure reducing pump group 6 includes a return liquid pipeline 10 and a pressure reducing pipeline 11 connected in parallel. The return liquid pipeline 10 is a conventional reflux pipeline. When the pressure reducing pipeline 11 is closed, reflux can be performed like other pipelines of the hot end 2; the pressure reducing valve 11-2 can reduce the pressure of the heat transfer liquid, and the pressure reducing pipeline 11 can reduce the flow rate of the heat transfer liquid. When the pressure needs to be reduced, the pressure reducing pipeline 11 can be opened and the return liquid pipeline 10 can be closed; the return liquid pipeline 10 and the pressure reducing pipeline 11 can be controlled independently. When the return liquid pipeline 10 or the pressure reducing pipeline 11 needs to be repaired, the other pipeline can be used for reflux.

[0038] In some embodiments, as Figure 2 As shown, the first dirt remover 9-4, the first pressure gauge 9-5, the seventh shut-off valve 9-6 and the first flexible connecting pipe 9-7 are connected in sequence between the second shut-off valve 9-1 and the pressure pump 9-2, and the first flexible connecting pipe 9-7 is arranged close to the pressure pump 9-2; the second flexible connecting pipe 9-8, the check valve 9-9, the eighth shut-off valve 9-10, the second pressure gauge 9-11, the first pressure transmitter 9-12 and the second throttle valve 9-13 are connected in sequence between the pressure pump 9-2 and the third shut-off valve 9-3, and the second flexible connecting pipe 9-8 is arranged close to the pressure pump 9-2.

[0039] A flexible connecting pipe is provided to facilitate the connection of the boosting pump 9-2, a pressure gauge is provided to display the pipeline pressure, and a pressure transmitter is provided to monitor the pipeline pressure; a second throttle valve 9-13 is provided at the outlet of the boosting pipeline 9, so that while the boosting pump 9-2 is pressurizing, the pipeline flow can be limited, thereby controlling the sufficient heat supplied to the hot end 2.

[0040] In some embodiments, as Figure 2 As shown, a first branch 12 is connected between the first pressure gauge 9-5 and the seventh shut-off valve 9-6, and a first drain valve 12-1 is provided on the first branch 12; a frequency conversion controller 13 is connected to the booster pump 9-2; a second branch 14 is connected between the second pressure gauge 9-11 and the first pressure transmitter 9-12, and a second drain valve 14-1 is provided on the second branch 14.

[0041] A drain valve is provided to discharge impurities, etc., and a frequency conversion controller 13 is provided to adjust the pressure intensity of the pressure pump 9-2.

[0042] In some embodiments, as Figure 3 As shown, a filter 11-4 is connected between the fifth shut-off valve 11-1 and the pressure reducing valve 11-2; a second pressure transmitter 11-5 is connected between the pressure reducing valve 11-2 and the sixth shut-off valve 11-3; a third branch 15 is connected between the fifth shut-off valve 11-1 and the filter 11-4, and a safety valve 15-1 is provided on the third branch 15.

[0043] Install a pressure transmitter to monitor pipeline pressure; install a safety valve 15-1 to prevent pipeline pressure from being too high.

[0044] In some embodiments, as Figure 4 As shown, the heating system further includes a control cabinet 16, and the control cabinet 16 is electrically connected to the first pressure transmitters 9-12, the second pressure transmitter 11-5 and the frequency conversion controller 13 respectively.

[0045] like Figure 4 As shown, a control cabinet 16 is provided which is electrically connected to the first pressure transmitter 9-12, the second pressure transmitter 11-5 and the frequency conversion controller 13 respectively, and the pressure intensity of the pressure pump 9-2 is adjusted by monitoring the changes in pipeline pressure to ensure that the pipeline network pressure is within a safe range.

[0046] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Within the scope of the present application, the above embodiments or technical features in different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present application as described above, which are not provided in detail for the sake of simplicity.

[0047] The embodiments of the present application are intended to encompass all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A heating system, characterized in that: The heat exchanger comprises a heat exchange unit and a plurality of heat-using ends, wherein the liquid outlet of the heat exchanger is connected to a liquid separator, and the liquid inlet is connected to a liquid collector; the liquid separator is connected to the liquid inlet of each heat-using end, and the liquid collector is connected to the liquid outlet of each heat-using end; A pressure pump group is connected between at least one of the heat-using ends and the liquid separator, a pressure reducing pump group is connected between the heat-using end and the liquid collector, and a first throttle valve is connected between the remaining heat-using ends and the liquid separator; the length of the pipeline between the heat-using end connected to the pressure pump group and the liquid separator is a first length, and the length of the pipeline between the heat-using end connected to the first throttle valve and the liquid separator is a second length, and the first length is greater than the second length.

2. The heating system according to claim 1, characterized in that The booster pump group includes a parallel liquid inlet pipeline and a pressurizing pipeline. The liquid inlet pipeline is provided with a first shut-off valve. The pressurizing pipeline is sequentially provided with a second shut-off valve, a booster pump and a third shut-off valve. The third shut-off valve is arranged close to the heat-using end.

3. The heating system according to claim 2, characterized in that The pressure reducing pump group includes a parallel return liquid pipeline and a pressure reducing pipeline. The return liquid pipeline is provided with a fourth shut-off valve. The pressure reducing pipeline is provided with a fifth shut-off valve, a pressure reducing valve and a sixth shut-off valve in sequence. The fifth shut-off valve is arranged close to the heat end.

4. The heating system according to claim 3, characterized in that: A first dirt remover, a first pressure gauge, a seventh shutoff valve and a first flexible connecting pipe are sequentially connected between the second shutoff valve and the pressure pump, and the first flexible connecting pipe is arranged close to the pressure pump.

5. The heating system according to claim 4, characterized in that: A second flexible connecting pipe, a check valve, an eighth shut-off valve, a second pressure gauge, a first pressure transmitter and a second throttle valve are sequentially connected between the boosting pump and the third shut-off valve, and the second flexible connecting pipe is arranged close to the boosting pump.

6. The heating system according to claim 5, characterized in that A first branch is connected between the first pressure gauge and the seventh shut-off valve, and a first drain valve is provided on the first branch; the booster pump is connected to a frequency converter; a second branch is connected between the second pressure gauge and the first pressure transmitter, and a second drain valve is provided on the second branch.

7. The heating system according to claim 6, characterized in that A filter is connected between the fifth shut-off valve and the pressure reducing valve.

8. The heating system according to claim 7, characterized in that: A second pressure transmitter is connected between the pressure reducing valve and the sixth shut-off valve.

9. The heating system according to claim 8, characterized in that A third branch is connected between the fifth shut-off valve and the filter, and a safety valve is provided on the third branch.

10. The heating system according to claim 9, characterized in that It also includes a control cabinet, which is electrically connected to the first pressure transmitter, the second pressure transmitter and the frequency conversion controller respectively.

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