Intra-station heating system for long-distance hot water delivery pressure isolation station and relay station

Abstract

The invention relates to the technical field of heat supply, in particular to an in-station heating system for a long-distance hot water delivery pressure isolation station and a relay station. The heating system comprises a dirt separator, a circulating pump, a space to be heated, a heating water supply pipeline, a heating water return pipeline, a primary net water return pipeline and a heat exchange station connected with the primary net water return pipeline. The input end of the dirt separator is communicated with a primary net water return pipeline; the first end of the heating water supply pipeline is communicated with the input end of the dirt separator and the primary net water return pipeline, and the second end of the heating water supply pipeline is provided with a first plug; the output end of the dirt separator is communicated with the access end of the circulating pump; the first end of the heating water return pipeline is communicated with the output end of the dirt separator and the access end of the circulating pump, and the second end of the heating water return pipeline is provided with a second plug; the space to be heated is located between the heating water supply pipeline and the heating water return pipeline. According to the technical scheme, heat can be supplied to the room in the station, the heating system can be optimized, and the cost can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of heating technology, and in particular to a heating system for long-distance hot water pressure isolation stations and relay stations. Background Art

[0002] With the development of society, centralized heating is making great strides as a form of winter heating for urban residents in northern China. With the improvement of national environmental protection requirements, cogeneration units that mainly provide heating in winter have the advantages of high comprehensive energy utilization efficiency and energy saving and environmental protection. Thermal power plants are generally far away from urban heat users, with an average distance of more than 20km. Sometimes there will be a large elevation difference along the heating pipeline network. At this time, in order to overcome the pipeline resistance along the way and reduce the system pressure, relay pump stations, pressure isolation stations or their combination are usually set up for heating.

[0003] There are usually duty rooms and toilets in the pressure isolation station or relay pump station (collectively referred to as the station), and the heating heat source of these rooms comes from the heating return water pipes in the station. Since the long-distance water supply temperature of the thermal power plant is generally between 120 and 130°C, and the return water temperature is between 50-60°C, and the design temperature of the radiator of conventional heat users is 80-90°C, it is usually necessary to set up a water mixing device or a heat exchanger to reduce the water supply temperature of the long-distance system and then heat the rooms in the station. The addition of a water mixing device or a heat exchanger in the station leads to an increase in the area of ​​the station building, an increase in investment, an increase in the complexity of the station heating system setting, and a complex operation and adjustment. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a heating system for long-distance hot water pressure isolation stations and relay stations, which can heat the rooms in the station while helping to optimize the heating system and reduce costs.

[0005] The present invention provides a heating system for long-distance hot water pressure isolation stations and relay stations, comprising:

[0006] A decontaminator, a circulating pump, a space to be heated, a heating water supply pipe, a heating return water pipe, a primary network return water pipe, and a heat exchange station connected to the primary network return water pipe;

[0007] The input end of the dirt remover is connected to the primary network return water pipe; the first end of the heating water supply pipe is connected to the input end of the dirt remover and the primary network return water pipe, and the second end of the heating water supply pipe is provided with a first plug;

[0008] The output end of the dirt remover is connected to the access end of the circulation pump; the first end of the heating return water pipe is connected to the output end of the dirt remover and the access end of the circulation pump, and the second end of the heating return water pipe is provided with a second plug;

[0009] Among them, the space to be heated is located between the heating water supply pipe and the heating return water pipe; a pressure difference is formed between the input end and the output end of the sludge separator, so that the fluid in the primary network return water pipe flows through the sludge separator to heat the space to be heated.

[0010] In some embodiments, the heating system for long-distance hot water pressure isolation stations and relay stations further includes:

[0011] a first shutoff valve and a second shutoff valve;

[0012] The first shut-off valve is arranged on the heating water supply pipe, and the second shut-off valve is located on the heating return water pipe.

[0013] In some embodiments, the heating system for long-distance hot water pressure isolation stations and relay stations further includes:

[0014] A balancing valve is arranged on the heating return water pipe, and the second shut-off valve is located between the dirt remover and the balancing valve.

[0015] In some embodiments, the heating system for long-distance hot water pressure isolation stations and relay stations further includes:

[0016] a first exhaust valve, the first exhaust valve being arranged at a first position on the heating water supply pipeline;

[0017] Wherein, the first position is the position where the heating water supply pipe is farthest from the horizontal plane.

[0018] In some embodiments, the heating system for long-distance hot water pressure isolation stations and relay stations further includes:

[0019] A second exhaust valve, the second exhaust valve is arranged at a second position on the heating return water pipe;

[0020] Wherein, the second position is the position where the heating return water pipe is farthest from the horizontal plane.

[0021] In some embodiments, the heating system for long-distance hot water pressure isolation stations and relay stations further includes:

[0022] a third shutoff valve and a fourth shutoff valve;

[0023] The third shut-off valve is located on the connecting pipe between the heating water supply pipe and the space to be heated, and the fourth shut-off valve is located on the connecting pipe between the heating return water pipe and the space to be heated.

[0024] In some embodiments, the heating system for long-distance hot water pressure isolation stations and relay stations further includes:

[0025] A radiator is located in the space to be heated, and the radiator is connected between the heating water supply pipe and the heating water return pipe.

[0026] In some embodiments, the separator is a cyclone separator.

[0027] In some embodiments, the heating system for long-distance hot water pressure isolation stations and relay stations further includes:

[0028] Heating stations and primary network water supply pipelines;

[0029] The heating station is connected to the heat exchange station through a primary network water supply pipeline, and the heating station is also connected to the heat exchange station through the primary network return water pipeline.

[0030] In some embodiments, the heating system for long-distance hot water pressure isolation stations and relay stations further includes:

[0031] An input pipe and an output pipe, the input end of the dirt remover is connected to the primary network return water pipe through the input pipe, and the first end of the heating water supply pipe is connected to the input pipe;

[0032] The output end of the desludger is connected to the circulation pump through the output pipe, and the first end of the heating return water pipe is connected to the output pipe.

[0033] The technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art:

[0034] The heating system for long-distance hot water pressure isolation station and relay station provided in the embodiment of the present invention comprises: a decontamination device, a circulation pump, a space to be heated, a heating water supply pipe, a heating return water pipe, a primary network return water pipe and a heat exchange station connected to the primary network return water pipe;

[0035] The input end of the sludge remover for the heating system in the long-distance hot water pressure isolation station and the relay station is connected to the primary network return water pipeline of the heating system in the long-distance hot water pressure isolation station and the relay station; the first end of the heating water supply pipeline for the heating system in the long-distance hot water pressure isolation station and the relay station is connected to the input end of the sludge remover for the heating system in the long-distance hot water pressure isolation station and the relay station, and the primary network return water pipeline of the heating system in the long-distance hot water pressure isolation station and the relay station, and the second end of the heating water supply pipeline for the heating system in the long-distance hot water pressure isolation station and the relay station is provided with a first plug;

[0036] The output end of the sludge remover for the heating system in the long-distance hot water pressure isolation station and the relay station is connected to the access end of the circulating pump for the heating system in the long-distance hot water pressure isolation station and the relay station; the first end of the heating return water pipeline for the heating system in the long-distance hot water pressure isolation station and the relay station is connected to the output end of the sludge remover for the heating system in the long-distance hot water pressure isolation station and the relay station, and the access end of the circulating pump for the heating system in the long-distance hot water pressure isolation station and the relay station, and the second end of the heating return water pipeline for the heating system in the long-distance hot water pressure isolation station and the relay station is provided with a second plug;

[0037] Among them, the space to be heated of the heating system in the long-distance hot water pressure isolating station and relay station is located between the heating water supply pipe of the heating system in the long-distance hot water pressure isolating station and relay station and the heating return pipe of the heating system in the long-distance hot water pressure isolating station and relay station; a pressure difference is formed between the input end and the output end of the sludge separator of the heating system in the long-distance hot water pressure isolating station and relay station, so that the fluid in the primary network return pipe of the heating system in the long-distance hot water pressure isolating station and relay station flows through the sludge separator of the heating system in the long-distance hot water pressure isolating station and relay station to heat the space to be heated of the heating system in the long-distance hot water pressure isolating station and relay station. Therefore, the embodiment of the present invention combines the decontaminator according to the small area of ​​the rooms (duty room, toilet) to be heated in the station (such as the pressure isolation station and the relay station), the short transmission distance, and the small resistance (no more than 0.5m water column on average), etc., and utilizes the 1m pressure difference at both ends of the decontaminator when it works normally, so as to realize the fluid flowing through the return water pipe of the primary network to circulate in the space to be heated, and heat the space to be heated, thereby solving the problem in the related art that heating the rooms in the station leads to an increase in the area occupied by the station, an increase in investment, a complex heating system setting, and a complex operation and adjustment. The embodiment of the present invention can heat the rooms in the station, which is conducive to optimizing the heating system and reducing the setting cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0040] Figure 1 A schematic diagram of a heating system for a long-distance hot water pressure isolation station and a relay station provided in an embodiment of the present invention;

[0041] Figure 2A schematic structural diagram of another heating system for long-distance hot water pressure isolation stations and relay stations provided in an embodiment of the present invention.

[0042] Among them, 10, sludge remover; 11, circulation pump; 12, space to be heated; 13, heating water supply pipe; 14, heating return pipe; 15, primary network return pipe; 16, first plug; 17, second plug; 18, first shut-off valve; 19, second shut-off valve; 20, balancing valve; 21, third shut-off valve; 22, fourth shut-off valve; 23, radiator; 24, input pipe; 25, output pipe; 26, heating station; 27, heat exchange station; 28, primary network water supply pipe; 29, first exhaust valve; 30, second exhaust valve; A, input end of sludge remover; B, output end of sludge remover. DETAILED DESCRIPTION

[0043] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0045] The heating system for long-distance hot water pressure isolation stations and relay stations provided by the embodiment of the present invention combines a decontaminator based on the small area of ​​the rooms (duty room, toilet) to be heated in the station (such as the pressure isolation station and relay station), the short transportation distance, and the small resistance (no more than 0.5m water column on average), etc., and utilizes the 1m pressure difference at both ends of the decontaminator when it works normally, so as to realize the circulation of the fluid flowing through the return water pipe of the primary network in the space to be heated, and heat the space to be heated, thereby solving the problem in the related art that heating the rooms in the station leads to an increase in the floor space in the station, an increase in investment, a complex heating system setup, and a complex operation and regulation. The embodiment of the present invention can heat the rooms in the station while being conducive to optimizing the heating system and reducing the setup cost.

[0046] In conjunction with the accompanying drawings, the heating system for long-distance hot water pressure isolation stations and relay stations provided in the embodiments of the present invention is exemplarily described below.

[0047] Figure 1 The schematic diagram of the structure of a heating system for a long-distance hot water pressure isolation station and a relay station according to an embodiment of the present invention. Figure 1As shown, the heating system in the long-distance hot water pressure isolation station and the relay station includes: a decontaminant 10, a circulating pump 11, a space to be heated 12, a heating water supply pipe 13, a heating return water pipe 14, a primary network return water pipe 15 and a heat exchange station 27 connected to the primary network return water pipe 15; the input end A of the decontaminant 10 is connected to the primary network return water pipe 15; the first end of the heating water supply pipe 13 is connected to the input end A of the decontaminant 10 and the primary network return water pipe 15, and the second end of the heating water supply pipe 13 is provided with a first plug 16;

[0048] The output end B of the sludge separator 10 is connected to the access end of the circulation pump 11; the first end of the heating return water pipe 14 is connected to the output end B of the sludge separator 10 and the access end of the circulation pump 11, and the second end of the heating return water pipe 14 is provided with a second plug 17; wherein, the space to be heated 12 is located between the heating water supply pipe 13 and the heating return water pipe 14; a pressure difference is formed between the input end A and the output end B of the sludge separator 10, so that the fluid in the primary network return water pipe 15 flows through the sludge separator 10 to heat the space to be heated 12.

[0049] Specifically, when the sludge remover 10 is working normally, there is at least a 1m pressure difference between the input end A and the output end B of the sludge remover 10. In addition, the space to be heated 12 described in the embodiment of the present invention can be a room (duty room, toilet) that needs to be heated in a station (such as a pressure isolation station and a relay station). The area of ​​the heating room is relatively small, the transmission distance is also relatively short, and the resistance is relatively small (no more than 0.5m water column on average).

[0050] Based on this, the embodiment of the present invention utilizes the pressure difference existing at both ends of the sludge separator 10 when it is working normally, and proposes the above technical solution. Specifically, a heating water supply pipe 13 and a heating return water pipe 14 are arranged between the space to be heated 12 (such as a pressure isolation station and a relay station) and the sludge separator 10, and the input end A of the sludge separator 10 is connected to the primary network return water pipe 15, the first end of the heating water supply pipe 13 is connected between the input end A of the sludge separator 10 and the primary network return water pipe 15, and the first end of the heating return water pipe 14 is connected between the output end B of the sludge separator 10 and the access end of the circulating pump 11, so as to utilize the pressure difference of at least 1m existing when the sludge separator 10 is working normally, so as to realize that the fluid flowing through the primary network return water pipe 15 can be circulated in the space to be heated 12, and heat the space to be heated 12.

[0051] Figure 1 It is exemplarily shown that the space to be heated 12 includes the duty room in the station, the toilet in the station and other heating rooms in the station.

[0052] The heating system for long-distance hot water pressure isolation stations and relay stations provided in an embodiment of the present invention comprises: a de-sludging device, a circulating pump, a space to be heated, a heating water supply pipe, a heating return water pipe, a primary network return water pipe and a heat exchange station connected to the primary network return water pipe; the input end of the de-sludging device is connected to the primary network return water pipe; the first end of the heating water supply pipe is connected between the input end of the de-sludging device and the primary network return water pipe, and the second end of the heating water supply pipe is provided with a first plug; the output end of the de-sludging device is connected to the access end of the circulating pump; the first end of the heating return water pipe is connected between the output end of the de-sludging device and the access end of the circulating pump, and the second end of the heating return water pipe is provided with a second plug; wherein the space to be heated is connected between the heating water supply pipe and the heating return water pipe; a pressure difference is formed between the input end and the output end of the de-sludging device so that the fluid in the primary network return water pipe heats the space to be heated when flowing through the de-sludging device. Therefore, the embodiment of the present invention combines the decontaminator according to the small area of ​​the rooms (duty room, toilet) to be heated in the station (such as the pressure isolation station and the relay station), the short transmission distance, and the small resistance (no more than 0.5m water column on average), etc., and utilizes the 1m pressure difference at both ends of the decontaminator when it works normally, so as to realize the fluid flowing through the return water pipe of the primary network to circulate in the space to be heated, and heat the space to be heated, thereby solving the problem in the related art that heating the rooms in the station leads to an increase in the area occupied by the station, an increase in investment, a complex heating system setting, and a complex operation and adjustment. Therefore, the embodiment of the present invention can heat the rooms in the station, which is conducive to optimizing the heating system and reducing the setting cost.

[0053] In some embodiments, Figure 1 As shown, the heating system in the long-distance hot water pressure isolation station and the relay station also includes: a first shut-off valve 18 and a second shut-off valve 19; the first shut-off valve 18 is arranged on the heating water supply pipe 13, and the second shut-off valve 19 is located on the heating return water pipe 14.

[0054] Specifically, the first shutoff valve 18 is used to open or close the heating water supply pipe 13, and the second shutoff valve 19 is used to open or close the heating return water pipe 14. Exemplarily, both the first shutoff valve 18 and the second shutoff valve 19 can be configured as internally threaded stop valves or internally threaded ball valves.

[0055] Among them, the internal thread stop valve has the following advantages: (1) Simple structure: The structure of the stop valve is relatively simple, mainly composed of valve body, valve disc, valve stem and other components, which is easy to manufacture and maintain; (2) Quick opening and closing: The working stroke is small, the opening and closing time is short, and it can quickly realize the function of cutting off or connecting the fluid, which is suitable for occasions that require frequent opening and closing; (3) Good sealing: It is a forced sealing valve, which forces the sealing surface to not leak by applying pressure to the valve disc, and the sealing performance is reliable. In addition, the friction between the sealing surfaces is small, not easy to wear, and has a long service life; (4) Precise control: The flow rate can be accurately adjusted by controlling the opening height of the valve disc, with good adjustment performance, which can meet the requirements of flow control under different working conditions; (5) Strong adaptability: It is usually made of stainless steel, copper, cast steel and other materials, has good corrosion resistance, can be used for a long time in various harsh environments, and is suitable for a variety of media, such as fluid transportation pipelines in the petroleum, chemical, pharmaceutical, food and other industries. Based on this, the first shut-off valve and the second shut-off valve are both set as threaded shut-off valves. The first shut-off valve has the above-mentioned advantages of the threaded shut-off valve when applied to the heating water supply pipe, and the second shut-off valve has the above-mentioned advantages of the threaded shut-off valve when applied to the heating return water pipe.

[0056] Among them, the internal thread ball valve has the following advantages: (1) Small fluid resistance: The fluid resistance coefficient of the ball valve is equal to that of the pipe section of the same length. In the fully open state, the medium can pass through the valve unimpeded. Even for the reduced diameter ball valve, its fluid resistance is quite small, which can effectively reduce energy loss; (2) Compact structure: Simple structure, small size, light weight, easy to install and disassemble, especially suitable for occasions with limited space, in some small pipeline systems or places with requirements for installation space. Advantages are obvious; (3) Good sealing performance: The valve seat adopts an elastic sealing structure, which is reliable. At present, the sealing surface material of the ball valve is widely used in plastics, etc., with good sealing performance. It can also be widely used in vacuum systems and can effectively prevent medium leakage; (4) Convenient operation: Quick opening and closing, from fully open to fully closed, only need to rotate 90°, easy to operate, easy to realize automatic control and remote control, and can be configured with pneumatic, electric and other drive mechanisms; (5) Easy maintenance: The ball valve has a simple structure, the sealing ring is generally movable, it is relatively easy to disassemble and replace, and the maintenance cost is low. Based on this, the first shut-off valve and the second shut-off valve are both set as threaded ball valves. The first shut-off valve has the above-mentioned advantages of the threaded ball valve when applied to the heating water supply pipe, and the second shut-off valve has the above-mentioned advantages of the threaded ball valve when applied to the heating return pipe.

[0057] In some embodiments, Figure 1As shown, the heating system in the long-distance hot water pressure isolation station and the relay station also includes: a first exhaust valve 29 and a second exhaust valve 30; the first exhaust valve 29 is set at a first position on the heating water supply pipe 13, and the second exhaust valve 30 is set at a second position on the heating return water pipe 14; wherein, the first position is the position where the heating water supply pipe 13 is farthest from the horizontal plane, and the second position is the position where the heating return water pipe 14 is farthest from the horizontal plane.

[0058] For example, Figure 1 The first exhaust valve 29 shown in the figure is arranged on the heating water supply pipe 13 and is close to the second end of the heating water supply pipe 13. This position can be the first position, that is, the position where the heating water supply pipe 13 is farthest from the horizontal plane; the second exhaust valve 30 is arranged on the heating return water pipe 14 and is close to the second end of the heating return water pipe 14. This position can be the second position, that is, the position where the heating return water pipe 14 is farthest from the horizontal plane.

[0059] Therefore, by setting the first exhaust valve 29, the gas in the heating water supply pipe 13 can be removed, and by setting the second exhaust valve 30, the gas in the heating return water pipe 14 can be removed, which is beneficial to the circulation of fluid in the heating water supply pipe 13 and the heating return water pipe 14, and improves the heating effect of the heating space 12.

[0060] In some embodiments, Figure 1 As shown, the heating system in the long-distance hot water pressure isolation station and the relay station also includes: a balancing valve 20, which is arranged on the heating return water pipe 14, and the second shut-off valve 19 is located between the decontaminant 10 and the balancing valve 20.

[0061] Specifically, a balancing valve 20 is provided on the heating return water pipe 14, and reasonable flow distribution can be achieved through the balancing valve 20. For example, by adjusting the opening of the balancing valve, the flow capacity of the valve is changed, thereby adjusting the flow resistance through the valve, so that the flow ratio of each pipeline in the heating system is consistent with the ratio of the design flow. In this way, when the total flow of the heating system is equal to the total design flow, the flow of each pipeline can also reach the design flow at the same time, solving the problem of uneven room temperature in the heating system.

[0062] For example, by setting a balancing valve, the system pressure can be adjusted to help balance the pressure difference in each part of the system and avoid some problems caused by uneven pressure. By increasing or reducing local resistance, the system pressure distribution is made more uniform, ensuring the stable operation of the heating system.

[0063] In some embodiments, Figure 1 As shown, the connection form of the balancing valve 20 is an internal thread type.

[0064] Specifically, the internal thread connection method makes the connection between the balancing valve and the pipeline relatively simple. It is only necessary to tighten the internal thread of the balancing valve with the corresponding external thread on the pipeline. No additional welding or flange connection or other complex operations are required. The installation process is relatively fast, which can effectively save installation time and labor costs. In addition, the internal thread connection can achieve a better sealing effect after tightening, reducing the possibility of fluid leakage. At the same time, the balancing valve itself usually uses high-quality sealing materials, such as polytetrafluoroethylene, silicone, etc., which further improves the sealing performance and can effectively prevent medium leakage.

[0065] In some embodiments, Figure 1 As shown, the heating system in the long-distance hot water pressure isolation station and the relay station also includes: a third shut-off valve 21 and a fourth shut-off valve 22; the third shut-off valve 21 is located on the connecting pipe between the heating water supply pipe 13 and the space to be heated 12, and the fourth shut-off valve 22 is located on the connecting pipe between the heating return water pipe 14 and the space to be heated 12.

[0066] Specifically, by setting a third shut-off valve 21 on the connecting pipe between the heating water supply pipe 13 and the space to be heated 12, the third shut-off valve 21 is used to control the conduction and shut-off of the connecting pipe between the heating water supply pipe 13 and the space to be heated 12; by setting a fourth shut-off valve 22 on the connecting pipe between the heating return water pipe 14 and the space to be heated 12, the fourth shut-off valve 22 is used to control the conduction and shut-off of the connecting pipe between the heating return water pipe 14 and the space to be heated 12.

[0067] For example, Figure 1 As shown, a third shut-off valve 21 is arranged on the connecting pipe between the duty room in the station and the heating water supply pipe 13, and a fourth shut-off valve 22 is arranged on the connecting pipe between the duty room in the station and the heating return pipe 14; a third shut-off valve 21 is arranged on the connecting pipe between the toilet in the station and the heating water supply pipe 13, and a fourth shut-off valve 22 is arranged on the connecting pipe between the toilet in the station and the heating return pipe 14; a third shut-off valve 21 is arranged on the connecting pipe between other heating rooms in the station and the heating water supply pipe 13, and a fourth shut-off valve 22 is arranged on the connecting pipe between other heating rooms in the station and the heating return pipe 14.

[0068] In some embodiments, Figure 1 As shown, the dirt separator 10 is a cyclone dirt separator.

[0069] Specifically, the cyclone decontaminator has the advantages of high decontamination efficiency, low clogging, online decontamination, small local resistance coefficient, large filtration area and convenient maintenance. Therefore, the embodiment of the present invention sets the decontaminator as a cyclone decontaminator, which is conducive to improving the working efficiency of the decontaminator.

[0070] In some embodiments, Figure 2 This is another structural diagram of a heating system for a long-distance hot water pressure isolation station and a relay station provided by an embodiment of the present invention. Figure 2 As shown, the heating system in the long-distance hot water pressure isolation station and the relay station also includes: a radiator 23 located in the space to be heated 12, and the radiator 23 is connected between the heating water supply pipe 13 and the heating return water pipe 14.

[0071] Thus, the fluid transmitted in the heating water supply pipe 13 flows through the heating water return pipe 14 via the radiator, and when flowing through the radiator, the fluid dissipates heat to the space to be heated 12 via the radiator.

[0072] In some embodiments, Figure 2 As shown, the heating system in the long-distance hot water pressure isolation station and the relay station also includes: a heating station 26 and a primary network water supply pipeline 28. The heating station 26 is connected to the heat exchange station 27 through the primary network water supply pipeline 28; the heat exchange station 27 is also connected to the heat exchange station 27 through the primary network return water pipeline 15.

[0073] Specifically, the heating station 26, also called the heat source plant, is the place where heat is generated in the centralized heating system. It uses boilers to burn fuel (such as coal, natural gas, etc.) or utilizes other energy sources (such as geothermal energy, industrial waste heat) to heat water or steam, so that these media carry a large amount of heat and provide initial energy for the entire heating system. Among them, the primary network heating water supply pipeline 13 is a heat transmission channel: the primary network heating water supply pipeline 13 is usually a high-temperature, high-pressure pipeline drawn from the heating station 26, which is responsible for transporting the high-temperature heat medium (hot water or steam) generated by the heating station 26 to each heat exchange station 27. These pipelines are generally wrapped with insulation materials to reduce the loss of heat during the transportation process, and in order to ensure the long-distance heat transportation effect, they will maintain a high-temperature and high-pressure working state.

[0074] Among them, the heat exchange station 27 is a heat conversion hub. When the high-temperature heat medium in the primary network heating water supply pipeline 13 is transported to the heat exchange station 27, the heat exchange station 27 uses heat exchange equipment (such as plate heat exchanger 23, etc.) to transfer the heat of the primary network heat medium to the low-temperature heat medium in the secondary network to achieve heat exchange and conversion. After the heat exchange is completed in the heat exchange station 27, the heat medium (return water) with reduced temperature flows back to the heating station 26 through the primary network return water pipeline 15. The return water returned to the heating station 26 can be heated again and become a high-temperature heat medium again to participate in the next round of heating cycle.

[0075] In some embodiments, Figure 1As shown, the heating system in the long-distance hot water pressure isolation station and the relay station also includes: an input pipe 24 and an output pipe 25; the input end A of the sludge separator 10 is connected to the primary network return pipe 15 through the input pipe 24, and the first end of the heating water supply pipe 13 is connected to the input pipe 24; the output end B of the sludge separator 10 is connected to the circulation pump 11 through the output pipe 25, and the first end of the heating return pipe 14 is connected to the output pipe 25.

[0076] Therefore, the heating system provided by the embodiment of the present invention can be applied to long-distance hot water pressure isolation stations and relay stations. The heating system directly provides fluid to the room that needs heating in the station through the pressure difference before and after the sludge remover in the return water pipeline of the long-distance transmission system in the station. The radiator in the room of the station can be a conventional radiator, so that the heating system in the station is simple, the floor space is reduced, the project investment is reduced, the operation and adjustment are simple and convenient, and the radiator has a more beautiful appearance. The technical scheme of the embodiment of the present invention can achieve the following effects: (1) The fluid is directly provided to the room that needs heating in the station through the pressure difference before and after the sludge remover in the return water pipeline of the long-distance transmission system in the station, and the setting of the water mixing device is eliminated, the floor space is reduced, and the project investment is reduced; (2) The water mixing device is eliminated, so that the heating system in the station is simple, the operation and adjustment are simple and convenient, and the operation and maintenance costs are saved; (3) The radiator in the room of the station can be a conventional radiator, which reduces the steel consumption compared with the hot water bare pipe radiator and has a relatively beautiful appearance.

[0077] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0078] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments described herein, but should conform to the widest scope consistent with the principles and novel features invented herein.

Claims

1. A heating system for long-distance hot water pressure isolation stations and relay stations, characterized in that: include: A decontaminator, a circulating pump, a space to be heated, a heating water supply pipe, a heating return water pipe, a primary network return water pipe, and a heat exchange station connected to the primary network return water pipe; The input end of the dirt remover is connected to the primary network return water pipe; the first end of the heating water supply pipe is connected to the input end of the dirt remover and the primary network return water pipe, and the second end of the heating water supply pipe is provided with a first plug; The output end of the dirt remover is connected to the access end of the circulation pump; the first end of the heating return water pipe is connected to the output end of the dirt remover and the access end of the circulation pump, and the second end of the heating return water pipe is provided with a second plug; Among them, the space to be heated is located between the heating water supply pipe and the heating return water pipe; a pressure difference is formed between the input end and the output end of the sludge separator, so that the fluid in the primary network return water pipe flows through the sludge separator to heat the space to be heated.

2. The heating system for long-distance hot water pressure isolation station and relay station according to claim 1 is characterized in that: Also includes: a first shutoff valve and a second shutoff valve; The first shut-off valve is arranged on the heating water supply pipe, and the second shut-off valve is located on the heating return water pipe.

3. The heating system for long-distance hot water pressure isolation station and relay station according to claim 2 is characterized in that: Also includes: A balancing valve is arranged on the heating return water pipe, and the second shut-off valve is located between the dirt remover and the balancing valve.

4. The heating system for long-distance hot water pressure isolation station and relay station according to claim 1 is characterized in that: Also includes: a first exhaust valve, the first exhaust valve being arranged at a first position on the heating water supply pipeline; Wherein, the first position is the position where the heating water supply pipe is farthest from the horizontal plane.

5. The heating system for long-distance hot water pressure isolation station and relay station according to claim 1 is characterized in that: Also includes: A second exhaust valve, the second exhaust valve is arranged at a second position on the heating return water pipe; Wherein, the second position is the position where the heating return water pipe is farthest from the horizontal plane.

6. The heating system for long-distance hot water pressure isolation station and relay station according to claim 1 is characterized in that: Also includes: a third shutoff valve and a fourth shutoff valve; The third shut-off valve is located on the connecting pipe between the heating water supply pipe and the space to be heated, and the fourth shut-off valve is located on the connecting pipe between the heating return water pipe and the space to be heated.

7. The heating system for long-distance hot water pressure isolation station and relay station according to claim 1 is characterized in that: Also includes: A radiator is located in the space to be heated, and the radiator is connected between the heating water supply pipe and the heating water return pipe.

8. The heating system for long-distance hot water pressure isolation station and relay station according to claim 1 is characterized in that: Also includes: Heating stations and primary network water supply pipelines; The heating station is connected to the heat exchange station through the primary network water supply pipeline, and the heating station is also connected to the heat exchange station through the primary network return water pipeline.

9. The heating system for long-distance hot water pressure isolation station and relay station according to claim 1, characterized in that: Also includes: An input pipe and an output pipe, the input end of the dirt remover is connected to the primary network return water pipe through the input pipe, and the first end of the heating water supply pipe is connected to the input pipe; The output end of the desludger is connected to the circulation pump through the output pipe, and the first end of the heating return water pipe is connected to the output pipe.

10. The heating system for long-distance hot water pressure isolation station and relay station according to any one of claims 1 to 9, characterized in that: The decontaminator is a cyclone decontaminator.

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