Heat exchange device of heat supply reactor and heat supply system of heat supply reactor

Abstract

The invention relates to the technical field of heat supply systems, and discloses a heat exchange device of a heat supply reactor and a heat supply system of the heat supply reactor, and the heat exchange device comprises a hot runner, a cold runner and a first dividing wall. An inlet and an outlet of the hot runner are respectively communicated with a water outlet pipeline and a water return pipeline of the heat supply reactor. An inlet and an outlet of the cold runner communicate with a water return pipeline and a water inlet pipeline of the user heat supply pipeline correspondingly. A first cavity is formed in the first dividing wall and filled with heat pipe working fluid, and the hot runner and the cold runner are arranged on the two sides of the first dividing wall respectively. And the heat pipe working liquid exchanges heat with hot water discharged from a water outlet pipeline of the heat supply reactor to be heated. Cold water discharged by the water return pipeline of the user heat supply pipeline exchanges heat with the heat pipe working liquid to be heated, and therefore heat is supplied to users. The first dividing wall and the heat pipe working fluid separate circulating water of the heat supply reactor from circulating water of the user heat supply pipeline. Therefore, a secondary loop for heat exchange does not need to be arranged between the heat supply reactor and the user heat supply pipeline, the cost is saved, the occupied space is saved, and the workload of operation and maintenance is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heating systems, and in particular to a heating pile heat exchange device and a heating pile heating system. Background Art

[0002] A heating reactor, also known as a heating reactor or a nuclear heating reactor, is a nuclear reactor dedicated to generating heat energy to heat urban buildings or to supply hot water and steam to industrial enterprises. The heat from the heating reactor needs to pass through the primary, secondary, and tertiary circuits to be exported to the users of the heating network. The hot water generated by the heating reactor flows in the primary circuit, and the user's heating water network is connected to the tertiary circuit. The primary circuit exchanges heat with the secondary circuit, and the secondary circuit exchanges heat with the tertiary circuit, thereby transferring the heat energy generated by the heating reactor to the user's heating pipeline. The secondary circuit is not only used for heat transfer, but also forms a barrier between the primary circuit and the tertiary circuit to prevent radioactive water in the primary circuit from entering the tertiary circuit and then contaminating the user's heating pipeline.

[0003] Since the secondary circuit needs to exchange heat with the primary circuit and the secondary circuit respectively, multiple water pumps need to be installed on the secondary circuit to circulate the water, and pressure-regulating devices, water replenishment tanks and other equipment are also required, which takes up a lot of space and has high construction costs. At the same time, the operation and maintenance workload is large due to the large number of equipment. Summary of the invention

[0004] In view of this, the present invention provides a heating pile heat exchange device and a heating pile heating system to solve the problem that when the heating pile is heating, a second circuit needs to be set between the heating pile and the user's heating network, which occupies a large space, has high construction costs and a large workload for operation and maintenance.

[0005] In a first aspect, the present invention provides a heat exchange device for a heating stack, which is arranged between a heating stack and a user heating pipeline, and the heat exchange device for the heating stack comprises:

[0006] A hot runner, wherein the inlet of the hot runner is connected to the water outlet pipeline of the heating stack, and the outlet of the hot runner is connected to the water return pipeline of the heating stack;

[0007] A cold runner, the inlet of the cold runner is connected to the return water pipeline of the user heating pipeline, and the outlet of the cold runner is connected to the water inlet pipeline of the user heating pipeline;

[0008] The first partition wall has a first cavity disposed therein, the first cavity is filled with a heat pipe working fluid, and the hot runner and the cold runner are respectively disposed on two sides of the first partition wall.

[0009] In an optional embodiment, a plurality of the first partition walls are arranged in parallel in sequence, and the hot runner and the cold runner are respectively formed on both sides of each of the first partition walls, the inlets of all the hot runners are connected to the water outlet pipeline of the heating stack, the outlets of all the hot runners are connected to the return water pipeline of the heating stack, the inlets of all the cold runners are connected to the return water pipeline of the user heating pipeline, and the outlets of all the cold runners are connected to the water inlet pipeline of the user heating pipeline.

[0010] In an optional implementation, it also includes:

[0011] A second partition wall has a second cavity disposed therein, the second partition wall is cross-arranged with the first partition wall, a plurality of the second partition walls divide the first side of the first partition wall into a plurality of hot runners and divide the second side of the first partition wall into a plurality of cold runners, the second cavity is connected to the first cavity and is filled with the heat pipe working fluid.

[0012] In an optional embodiment, the heat pipe working fluid is ethylene glycol or ammonium salt solution.

[0013] In an optional implementation, it also includes:

[0014] An outer shell, the first partition wall, the hot runner and the cold runner are all arranged in the outer shell, and a hot side inlet joint, a hot side outlet joint, a cold side inlet joint, a cold side outlet joint and a heat pipe working fluid injection joint are arranged on the outer shell, the hot side inlet joint is connected with the inlet of the hot runner and is suitable for connecting with the outlet pipe of the heating stack, the hot side outlet joint is connected with the outlet of the hot runner and is suitable for connecting with the return pipe of the heating stack, the cold side inlet joint is connected with the inlet of the cold runner and is suitable for connecting with the return pipe of the user heating pipe, the cold side outlet joint is connected with the outlet of the cold runner and is suitable for connecting with the inlet pipe of the user heating pipe, and the heat pipe working fluid injection joint is connected with the interior of the first partition wall.

[0015] In an optional embodiment, the first partition wall is welded inside the outer shell.

[0016] In an optional embodiment, the first partition wall is detachably connected to the outer shell.

[0017] In a second aspect, the present invention further provides a heating pile heating system, comprising any of the above-mentioned heating pile heat exchange devices.

[0018] In an optional implementation, it also includes:

[0019] A heat supply pile circulation pipeline, wherein the hot runner is connected to the heat supply pile circulation pipeline;

[0020] The first water pump is arranged on the circulation pipeline of the heating stack.

[0021] In an optional embodiment, the user heats the circulating pipeline, and the cold runner is connected to the user heats the circulating pipeline;

[0022] The second water pump is arranged on the user heating circulation pipeline.

[0023] The present invention provides a heat exchange device for a heating stack, which is arranged between the heating stack and the user's heating pipeline. The heat exchange device for the heating stack includes a hot runner, a cold runner and a first partition wall, and the first partition wall is filled with a heat pipe working fluid. The hot water discharged from the outlet pipe of the heating stack enters the hot runner through the inlet of the hot runner. When the hot water flows through the hot runner, it exchanges heat with the heat pipe working fluid inside the first partition wall through the wall plate on the first side of the first partition wall, so that the temperature of the heat pipe working fluid increases. The water with a lowered temperature after the heat exchange flows through the hot runner and then enters the outlet pipe return pipe of the heating stack through the outlet of the hot runner, and returns to the heating stack through the return pipe for heating. The cold water discharged from the return pipe of the user's heating pipeline enters the cold runner through the inlet of the cold runner. When the cold water flows through the cold runner, it exchanges heat with the heat pipe working fluid inside the first partition wall through the wall plate on the second side of the first partition wall, so that the temperature of the cold water increases. After heat exchange, the water with increased temperature flows through the cold runner and then enters the water inlet pipe of the user's heating pipeline through the outlet of the cold runner to provide heating for the user. The first partition wall and the heat pipe working fluid separate the circulating water of the heating reactor from the circulating water of the user's heating pipeline, effectively preventing the radioactive water of the heating reactor from contaminating the circulating water of the user's heating pipeline. Therefore, there is no need to set up a secondary circuit heat exchange between the heating reactor and the user's heating pipeline, which not only saves the cost caused by the circulating pump, water replenishment tank, constant pressure water replenishment unit, pipeline valves, and control instruments in the heat exchange circuit, but also saves space and reduces the workload of operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the distribution of hot runners and cold runners of a heat exchange device for a heat supply pile according to an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the distribution of hot runners and cold runners of another heat supply pile heat exchange device according to an embodiment of the present invention;

[0027] Figure 3A schematic diagram of the outer shell structure of a heat exchange device for a heating pile implemented in the present invention;

[0028] Figure 4 A schematic diagram of the outer shell structure of another heat supply pile heat exchange device implemented in the present invention;

[0029] Figure 5 The present invention is a schematic structural diagram of a heating system of a heating pile implemented in the present invention.

[0030] Description of reference numerals:

[0031] 1. First partition wall; 2. Heat pipe working fluid; 3. Hot runner; 4. Cold runner; 5. Outer shell; 6. Hot side inlet joint; 7. Hot side outlet joint; 8. Cold side inlet joint; 9. Cold side outlet joint; 10. Heat pipe working fluid injection joint; 11. First water pump; 12. Second water pump; 13. Second partition wall. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0033] Combine the following Figures 1 to 5 , describing an embodiment of the present invention.

[0034] According to an embodiment of the present invention, on the one hand, Figure 1 or Figure 2 As shown, a heat exchange device for a heating stack is provided, which is arranged between the heating stack and the user's heating pipeline. The heat exchange device for the heating stack includes a hot runner 3, a cold runner 4 and a first partition wall 1. The first partition wall 1 is two wall plates arranged in parallel, and a cavity is formed between the two wall plates. The cavity between the two wall plates is filled with a heat pipe working fluid 2, which is a working medium for transferring heat. The hot runner 3 is located on the first side of the first partition wall 1, and the cold runner 4 is located on the second side of the first partition wall 1. After the fluid in the hot runner 3 exchanges heat with the heat pipe working fluid 2, the fluid in the cold runner 4 exchanges heat with the heat pipe working fluid 2.

[0035] The hot runner 3 has an inlet and an outlet, and the heating stack has an outlet pipe and a return pipe. The inlet of the hot runner 3 is connected to the outlet pipe of the heating stack, and the outlet of the hot runner 3 is connected to the return pipe of the heating stack. The cold runner 4 has an inlet and an outlet, and the user heating pipe has a return pipe and an inlet pipe. The inlet of the cold runner 4 is connected to the return pipe of the user heating pipe, and the outlet of the cold runner 4 is connected to the inlet pipe of the user heating pipe.

[0036] In this way, the hot water discharged from the outlet pipe of the heating stack enters the hot runner 3 through the inlet of the hot runner 3. When the hot water flows through the hot runner 3, it exchanges heat with the heat pipe working fluid 2 inside the first partition 1 through the wall plate on the first side of the first partition 1, so that the temperature of the heat pipe working fluid 2 increases. After the heat exchange, the water with a lower temperature flows through the hot runner 3 and enters the outlet pipe return pipe of the heating stack through the outlet of the hot runner 3, and returns to the heating stack through the return pipe for heating. The cold water discharged from the return pipe of the user's heating pipeline enters the cold runner 4 through the inlet of the cold runner 4. When the cold water flows through the cold runner 4, it exchanges heat with the heat pipe working fluid 2 inside the first partition 1 through the wall plate on the second side of the first partition 1, so that the temperature of the cold water increases. After the heat exchange, the water with a higher temperature flows through the cold runner 4 and enters the water inlet pipe of the user's heating pipeline through the outlet of the cold runner 4 to provide heating for the user.

[0037] In this arrangement, the first partition wall and the heat pipe working fluid 2 separate the circulating water of the heating stack from the circulating water of the user's heating pipeline through two wall panels and cavities, effectively preventing the radioactive water of the heating stack from contaminating the circulating water of the user's heating pipeline, and ensuring the reliability of isolating the radioactive liquid from the non-radioactive liquid. Therefore, there is no need to set up a secondary circuit heat exchange between the heating stack and the user's heating pipeline, which not only saves the cost caused by the circulating pump, water replenishment tank, constant pressure water replenishment unit, pipeline valves, and control instruments in the heat exchange circuit, but also saves the occupied space and reduces the workload of operation and maintenance.

[0038] For a 400MWt heating stack, the temperature of the hot runner 3 inlet is 98°C, the temperature of the hot runner 3 outlet is 68°C, and the flow rate is 1429t / h. The temperature of the cold runner 4 inlet is 50°C, the temperature of the cold runner 4 outlet is 90°C, and the flow rate is 860t / h. The material of the two side wall panels of the first partition is stainless steel, and the volume of the heat pipe working fluid 2 filled in the cavity between the two side wall panels is 14.528 cubic meters, and the heat exchange area requires 5022 square meters. Under this condition, 5 circulating pumps can be replaced, reducing power consumption by 2000KWh, and saving about 169 million degrees of electricity per year. 18 tube wall heat exchangers and two sets of constant pressure water supply units (including pumps, pressure relief valves, safety valves, water supply tanks, etc.) can be saved. It can save about 1,000 square meters of floor space and about 3,000 cubic meters of plant.

[0039] It is worth mentioning that negative pressure should be maintained in the cavity formed between the two wall panels.

[0040] In an optional embodiment, if Figure 1As shown, multiple first partitions 1 are arranged in sequence, and multiple first partitions 1 are arranged in parallel. The two sides of each first partition 1 are divided into hot runners 3 and cold runners 4, that is, a hot runner 3 is formed between the first first partition 1 and the second first partition 1, a cold runner 4 is formed between the second first partition 1 and the third first partition 1, and a hot runner 3 is formed between the third first partition 1 and the fourth first partition 1. By analogy, the hot runners 3 and the cold runners 4 are arranged one by one. The inlet of each hot runner 3 is connected to the outlet pipe of the heating stack, and the outlet of each hot runner 3 is connected to the return pipe of the heating stack. In this way, the hot water in the outlet pipe of the heating stack enters each hot runner 3 from the inlet of each hot runner 3, and the hot water in each hot runner 3 exchanges heat with the heat pipe working fluid 2 in the first partitions 1 on both sides, which greatly increases the heat exchange area and has a higher heat utilization rate.

[0041] The flow direction of the fluid in the cold runner 4 is opposite to the flow direction of the fluid in the hot runner 3 .

[0042] The inlet of each cold runner 4 is connected to the return water pipeline of the user's heating pipeline, and the outlet of each cold runner 4 is connected to the inlet water pipeline of the user's heating pipeline. In this way, the cold water in the user's heating pipeline enters each cold runner 4 from the inlet of each cold runner 4. Each cold runner 4 exchanges heat with the heat pipe working fluid 2 in the first partition wall 1 on both sides thereof, which greatly increases the heat exchange area and improves the heat utilization rate.

[0043] In other optional embodiments, such as Figure 2 As shown, the heat exchange device of the heating stack also includes a second partition wall 13, and a second cavity is arranged inside the second partition wall 13 and filled with a heat pipe working fluid 2. A plurality of second partition walls 13 are arranged and are all arranged crosswise with the first partition wall 1, and the first cavity is connected with the second cavity, so that the second partition wall 13 divides the space on the first side of the first partition wall into a plurality of hot runners 3, and at the same time divides the space on the second side of the first partition wall 1 into a plurality of cold runners 4. The inlet of each hot runner 3 is respectively connected to the outlet pipe of the heating stack, and the outlet of each hot runner 3 is respectively connected to the return pipe of the heating stack. In this way, the hot fluid flows horizontally at the lower side of the first partition wall 1, and the cold fluid flows horizontally at the upper side of the first partition wall 1. The hot water in the outlet pipe of the heating stack enters each hot runner 3 from the inlet of each hot runner 3 respectively, and the hot water in each hot runner 3 exchanges heat with the heat pipe working fluid 2 in the second partition walls 13 on both sides thereof, and at the same time exchanges heat with the heat pipe working fluid 2 in the first partition wall 1, which greatly increases the heat exchange area and has a higher heat utilization rate.

[0044] The inlet of each cold runner 4 is connected to the return water pipeline of the user's heating pipeline, and the outlet of each cold runner 4 is connected to the inlet water pipeline of the user's heating pipeline. In this way, the cold water in the user's heating pipeline enters each cold runner 4 from the inlet of each cold runner 4. The cold water in each cold runner 4 exchanges heat with the heat pipe working fluid 2 in the second partition 13 on both sides thereof, and at the same time exchanges heat with the heat pipe working fluid 2 in the first partition 1, which greatly increases the heat exchange area and has a higher heat utilization rate.

[0045] A plurality of second partition walls 13 may be arranged in parallel, and a second partition wall 13 and a second partition wall 13 may be arranged vertically.

[0046] In an optional embodiment, the heat pipe working fluid 2 may be ethylene glycol or ammonium salt solution. Ethylene glycol is an organic compound, also known as glycol and 1,2-ethylene glycol, and is particularly suitable for low temperature environments. Ammonium salt solution is a solution formed by dissolving a compound composed of ammonium ions and corresponding anions in water. It can be used in a low temperature environment of -40°C.

[0047] In some embodiments, Figure 3 or Figure 4 As shown, the heat exchange device of the heating stack also includes an outer shell 5, and the first partition wall 1, the hot runner 3 and the cold runner 4 are all arranged in the outer shell 5. The outer shell 5 protects the first partition wall 1, the hot runner 3 and the cold runner 4. The outer shell 5 is respectively provided with a hot side inlet joint 6, a hot side outlet joint 7, a cold side inlet joint 8, a cold side outlet joint 9 and a heat pipe working fluid injection joint 10. The hot side inlet joint 6 is connected to the inlet of the hot runner 3, and the hot side outlet joint 7 is connected to the outlet of the hot runner 3. The hot side inlet joint 6 is connected to the outlet pipe of the heating stack, and the hot side outlet joint 7 is connected to the return pipe of the heating stack. Therefore, the hot water in the outlet pipe of the heating stack flows into the inlet of each hot runner 3 after entering from the hot side inlet joint 6, and the water after heat exchange flows out from the outlet of each hot runner 3 and flows into the return pipe of the heating stack through the hot side outlet joint 7, so that the connection is more convenient.

[0048] The cold side inlet joint 8 is connected to the inlet of the cold runner 4, and the cold side outlet joint 9 is connected to the outlet of the cold runner 4. The cold side inlet joint 8 is connected to the return water pipeline of the user's heating pipeline, and the cold side outlet joint 9 is connected to the inlet water pipeline of the user's heating pipeline. Thus, the cold water in the return water pipeline of the user's heating pipeline enters from the cold side inlet joint 8 and flows into the inlet of each cold runner 4. After the heat exchanged water flows out from the outlet of each cold runner 4, it flows into the inlet water pipeline of the heating stack through the cold side outlet joint 9, and the connection is more convenient.

[0049] In an optional embodiment, if Figure 3As shown, the first partition wall 1 is welded in the outer shell 5 to form a welded heat exchanger, so that a hot runner 3 and a cold runner 4 are formed on both sides of the first partition wall 1. The whole is more stable, has excellent sealing performance, and can effectively prevent leakage.

[0050] In another optional embodiment, if Figure 4 As shown, the first partition wall 1 is detachably arranged in the outer shell 5 to form an assembled heat exchanger, which is convenient for replacement or maintenance.

[0051] According to an embodiment of the present invention, on the other hand, a heating pile heating system is also provided, comprising any of the above heating pile heat exchange devices. The effect brought by the heating pile heating system is consistent with that of the heating pile heat exchange device, so it will not be repeated.

[0052] In some embodiments, Figure 5 As shown, the heating system of the heating pile further includes: a heating pile circulation pipeline and a first water pump 11. The heating pile circulation pipeline has an outlet pipeline and a return pipeline. The outlet pipeline and the return pipeline of the heating pile circulation pipeline are respectively connected to the heating pile. The outlet pipeline of the heating pile circulation pipeline is connected to the inlet of the hot runner 3, and the return pipeline of the heating pile circulation pipeline is connected to the outlet of the hot runner 3. The first water pump 11 is arranged on the outlet pipeline of the heating pile circulation pipeline. Starting the first water pump 11 can pump the hot water of the heating pile into the hot runner 3 and return it to the heating pile from the return pipeline of the heating pile circulation pipeline.

[0053] In some embodiments, Figure 5 As shown, the heating system of the heating stack further includes: a user heating circulation pipeline and a second water pump 12, wherein the user heating circulation pipeline has a water inlet pipeline and a water return pipeline. The water return pipeline of the user heating circulation pipeline is connected to the inlet of the cold runner 4, and the water inlet pipeline of the user heating circulation pipeline is connected to the outlet of the cold runner 4. The second water pump 12 is arranged on the water inlet pipeline of the user heating circulation pipeline, and starting the second water pump 12 can pump the water after heat exchange to the user heating circulation pipeline for heating the user.

[0054] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the present application.

Claims

1. A heat exchange device for a heating pile, characterized in that: The heat exchange device of the heating pile is arranged between the heating pile and the user's heating pipeline, and the heating pile heat exchange device includes: A hot runner (3), wherein the inlet of the hot runner (3) is connected to the water outlet pipeline of the heating stack, and the outlet of the hot runner (3) is connected to the water return pipeline of the heating stack; A cold runner (4), wherein the inlet of the cold runner (4) is connected to the return water pipeline of the user heating pipeline, and the outlet of the cold runner (4) is connected to the inlet water pipeline of the user heating pipeline; A first partition wall (1) is provided with a first cavity therein, the first cavity is filled with a heat pipe working fluid (2), and the hot runner (3) and the cold runner (4) are respectively arranged on both sides of the first partition wall (1).

2. The heating stack heat exchange device according to claim 1, characterized in that: A plurality of the first partition walls (1) are arranged in parallel in sequence, and the hot runner (3) and the cold runner (4) are respectively formed on both sides of each of the first partition walls (1); the inlets of all the hot runners (3) are connected to the water outlet pipeline of the heating stack, the outlets of all the hot runners (3) are connected to the water return pipeline of the heating stack, the inlets of all the cold runners (4) are connected to the water return pipeline of the user heating pipeline, and the outlets of all the cold runners (4) are connected to the water inlet pipeline of the user heating pipeline.

3. The heat exchange device of the heating pile according to claim 1, characterized in that: Also includes: A second partition wall (13) is provided with a second cavity therein; the second partition wall (13) is arranged crosswise with the first partition wall (1); a plurality of the second partition walls (13) divide the first side of the first partition wall (1) into a plurality of hot runners (3) and divide the second side of the first partition wall (1) into a plurality of cold runners (4); the second cavity is connected to the first cavity and is filled with the heat pipe working fluid (2).

4. The heating stack heat exchange device according to claim 1, characterized in that: The heat pipe working fluid (2) is ethylene glycol or ammonium salt solution.

5. The heating stack heat exchange device according to claim 1, characterized in that: Also includes: An outer shell (5), wherein the first partition wall (1), the hot runner (3) and the cold runner (4) are all arranged in the outer shell (5); the outer shell (5) is provided with a hot side inlet joint (6), a hot side outlet joint (7), a cold side inlet joint (8), a cold side outlet joint (9) and a heat pipe working fluid injection joint (10); the hot side inlet joint (6) is connected to the inlet of the hot runner (3) and is suitable for being connected to the water outlet pipeline of the heating stack; the hot side outlet joint (7) is connected to the outlet of the hot runner (3) and is suitable for being connected to the water return pipeline of the heating stack; the cold side inlet joint (8) is connected to the inlet of the cold runner (4) and is suitable for being connected to the water return pipeline of the user heating pipeline; the cold side outlet joint (9) is connected to the outlet of the cold runner (4) and is suitable for being connected to the water inlet pipeline of the user heating pipeline; and the heat pipe working fluid injection joint (10) is connected to the interior of the first partition wall (1).

6. The heat exchange device of the heating pile according to claim 5, characterized in that: The first partition wall (1) is welded inside the outer shell (5).

7. The heating stack heat exchange device according to claim 5, characterized in that: The first partition wall (1) is detachably connected inside the outer shell (5).

8. A heating system of a heating pile, characterized in that: It comprises the heat exchange device of the heating pile according to any one of claims 1 to 7.

9. The heating pile heating system according to claim 8, characterized in that: Also includes: A heat supply pile circulation pipeline, the hot runner (3) is connected to the heat supply pile circulation pipeline; The first water pump (11) is arranged on the circulation pipeline of the heating stack.

10. The heating pile heating system according to claim 8, characterized in that: A user heating circulation pipeline, the cold runner (4) is connected to the user heating circulation pipeline; The second water pump (12) is arranged on the user heating circulation pipeline.

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