Container type geothermal heat supply station

Abstract

The utility model relates to a container type geothermal heating station, which belongs to the technical field of geothermal heating and comprises a base, a geothermal water treatment device, a heat exchange unit and a control system, and the geothermal water treatment device, the heat exchange unit and the control system are fixedly mounted at the upper end of the base. The geothermal water treatment device comprises a cyclone desander, a first-stage gas-water separator and a second-stage gas-water separator, the cyclone desander is used for separating impurities in geothermal water, and the first-stage gas-water separator and the second-stage gas-water separator are used for separating gas in the geothermal water. The device is applied to the field of geothermal heating, can effectively reduce the investment cost of the geothermal heating station, shortens the construction period of the geothermal heating station, and avoids waste of geothermal resources of a test exploratory well.

Description

Technical Field

[0001] The utility model belongs to the technical field of geothermal heating, and in particular relates to a containerized geothermal heating station. Background Art

[0002] At present, according to the Group's "14th Five-Year Plan" development plan for new energy and new business, geothermal business is the company's traditional advantage area and must be vigorously developed. The heating area will reach 150 million square meters in 2025 and 500 million square meters in 2035. PetroChina's geothermal development and utilization projects will show an explosive growth trend, and have the basic conditions for optimizing and improving geothermal heating. Geothermal heating stations generally use traditional fixed station buildings to achieve geothermal water treatment and heat exchange, and require civil engineering, equipment installation, electrical instrumentation and other engineering construction to be completed at the project site, with a long construction period.

[0003] However, during the geothermal well drilling process, the area occupied is relatively large, and the construction of the geothermal heating station cannot be carried out simultaneously. The construction and commissioning of the geothermal heating station are delayed, resulting in the inability to quickly utilize the developed geothermal resources, affecting the timing of geothermal heating.

[0004] The containerized geothermal heating station is prefabricated in a factory and can be put into use as soon as it is transported to the site, which speeds up the project construction process and meets the needs of the rapid growth of CNPC's geothermal development and utilization projects. Utility Model Content

[0005] In view of the above problems, the utility model is applied to the field of geothermal heating, which can effectively reduce the investment cost of geothermal heating stations, shorten the construction period of geothermal heating stations, and avoid the waste of geothermal resources in test wells. It is very necessary for some test well projects.

[0006] In order to overcome the problems existing in the prior art, the utility model provides the following technical solutions:

[0007] A containerized geothermal heating station, comprising:

[0008] A base, a geothermal water treatment device, a heat exchange unit, and a control system. The upper end of the base is fixedly mounted with a geothermal water treatment device, a heat exchange unit, and a control system;

[0009] Among them, the geothermal water treatment device includes a cyclone desander and a primary gas-water separator and a secondary gas-water separator. The cyclone desander is used to separate impurities in the geothermal water, and the primary gas-water separator and the secondary gas-water separator are used to separate gas in the geothermal water.

[0010] Furthermore, the heat exchange unit includes a No. 1 plate heat exchanger, a No. 2 plate heat exchanger, a circulating water pump, a make-up water pump, a water tank, a heating side water supply main pipe, a heating side return water main pipe, and a municipal tap water make-up pipe. The heating side return water main pipe is connected to the water inlet of the circulating water pump, and the heating side return water main pipe is connected to the No. 2 plate heat exchanger and the No. 1 plate heat exchanger in sequence after passing through the circulating water pump. The No. 2 plate heat exchanger is connected to the geothermal return water main pipe, and the municipal tap water make-up pipe is connected to the make-up water pump after passing through the water tank.

[0011] Furthermore, the geothermal water treatment device also includes a geothermal water supply main pipe and a geothermal water return main pipe, the geothermal water supply main pipe is sequentially installed with a cyclone desander and a primary gas-water separator, an electric drain valve and an electric exhaust valve are installed at the bottom of the cyclone desander, and a secondary gas-water separator is installed on the geothermal water return main pipe;

[0012] Among them, the first-level gas-water separator of the geothermal water supply main pipe is connected to the second-level gas-water separator of the geothermal return water main pipe through the No. 1 plate heat exchanger and the No. 2 plate heat exchanger, and the heating side return water main pipe is connected to the heating side water supply main pipe after passing through the plate heat exchanger to supply to the user end.

[0013] Furthermore, the heat exchange unit includes a basket filter, and the geothermal water supply main pipe is equipped with a basket filter between the first-level gas-water separator and the first plate heat exchanger, and a drain valve is provided at the lower end of the basket filter.

[0014] Furthermore, flow meters are installed on the municipal tap water make-up pipe and the make-up pump outlet, and remote pressure differential gauges and electric valves are installed on the inlet and outlet pipelines of the No. 1 plate heat exchanger and the No. 2 plate heat exchanger; a remote pressure gauge is installed on the geothermal water supply main pipe, and a low alarm and a low-low alarm are set on the remote pressure gauge, and the circulating water pump is shut down in a chain reaction when a low-low alarm occurs.

[0015] Furthermore, the control system includes a remote pressure gauge, a remote temperature gauge, a liquid level meter, a flow meter, a remote differential pressure gauge, an electric valve and a frequency conversion interlock, and the monitoring data are output to the control system via electrical signals;

[0016] The remote pressure gauge and remote temperature gauge of the control system are arranged on the inlet and outlet pipelines of each device to detect the operation status of each device. The liquid level meter is installed on the primary gas-water separator and the secondary gas-water separator. The liquid level meter is used to control the opening degree of the electric air release valve.

[0017] Furthermore, a variable frequency speed regulation system is installed on the circulating water pump and the water supply pump.

[0018] Furthermore, the geothermal water direction of the No. 1 plate heat exchanger is arranged in a top-in and bottom-out arrangement, and the geothermal water direction of the No. 2 plate heat exchanger is arranged in a bottom-in and top-out arrangement, and the No. 1 plate heat exchanger and the No. 2 plate heat exchanger are installed in series;

[0019] The geothermal water direction of the No. 1 plate heat exchanger is arranged in a top-in and bottom-out manner, and the geothermal water direction of the No. 2 plate heat exchanger is arranged in a top-in and bottom-out manner. The No. 1 plate heat exchanger and the No. 2 plate heat exchanger are installed in parallel.

[0020] Furthermore, the geothermal water inlet and outlet pipelines of the No. 1 plate heat exchanger and the No. 2 plate heat exchanger are both provided with electric valves and inlet and outlet differential pressure gauges; the geothermal water inlets of the No. 1 plate heat exchanger and the No. 2 plate heat exchanger are both jumpered to the geothermal return water mother pipe through backwash pipes; the geothermal water outlets of the No. 1 plate heat exchanger and the No. 2 plate heat exchanger are both jumpered to the geothermal water supply mother pipe through backwash pipes, and electric valves are provided on the backwash pipes.

[0021] Furthermore, the heat exchange unit further comprises a decontaminator, a water supply pump, a water tank, and a municipal tap water supply pipe. The decontaminator is installed on the return water main pipe on the heating side. The return water main pipe on the heating side between the inlet of the circulating water pump and the decontaminator is connected to the water supply interface. The water supply interface is connected to the water supply pump. The outlet of the water supply pump is connected to the return water main pipe on the heating side. The inlet of the water supply pump is connected to the outlet of the water tank. The inlet of the water tank is connected to the municipal tap water supply pipe.

[0022] Wherein, a liquid level meter is installed on the water tank and configured to monitor the water level in the water tank. A low water level alarm is set on the liquid level meter, and the water supply pump is interlocked and shut down when the low water level alarm is triggered.

[0023] Beneficial effects of the utility model: The utility model is designed for geothermal heating stations and achieves the following four effects:

[0024] 1) Utilize the geothermal resources of the test wells: Pre-treat the geothermal water in the test wells and extract the heat for heating through the containerized geothermal heating station, so as to avoid the waste of geothermal resources and reduce the cost of the test wells while meeting the regulatory requirements and environmental protection.

[0025] 2) Shorten the construction period of geothermal heating stations: During the drilling of geothermal wells, a large area is occupied, and the construction of geothermal heating stations cannot be carried out simultaneously. Containerized geothermal heating stations can be prefabricated and processed in the factory. When the geothermal well is drilled, the containerized geothermal heating station is manufactured and completed at the same time. It can be transported to the well site and put into use immediately, shortening the construction period of geothermal heating stations and meeting the timing of the geothermal heating stations being put into production.

[0026] 3) Make the geothermal heating station mobile, recyclable and assemblable: After the geothermal heating station is highly integrated, it can continue to be used in other test wells after a heating season, or it can be used as a traditional fixed geothermal heating station for a long time. If the number of wells increases, on the basis of a single containerized geothermal heating station, multiple wells of geothermal water treatment and heat exchange can be carried out by connecting in series, in parallel, or in stacking.

[0027] 4) Reduce the construction cost of geothermal heating stations: Containerized geothermal heating stations do not require the construction of permanent station buildings, and the entire geothermal heating station is highly integrated with centralized piping. The cost of the ground engineering part can be reduced by 50% compared to traditional geothermal heating stations, thereby reducing the investment cost of geothermal heating projects. It can also use a small investment to utilize the geothermal resources of test wells and reduce the investment in test wells.

[0028] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model 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, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 The schematic diagram of the structure of the containerized geothermal heating station according to the embodiment of the utility model is shown.

[0031] In the picture

[0032] 1-cyclone desander, 2-primary gas-water separator, 3-No. 1 plate heat exchanger, 4-No. 2 plate heat exchanger, 5-circulating water pump, 6-water supply pump, 7-water tank, 8-secondary gas-water separator, 9-control system, 10-heat exchange unit, 11-geothermal water supply main pipe, 12-geothermal return water main pipe, 13-heating side return water main pipe, 14-heating side water supply main pipe, 15-municipal tap water supply pipe, 16-base. DETAILED DESCRIPTION

[0033] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0034] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that the terms "first", "second" etc. in the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged in appropriate circumstances, so that the embodiments of the present application described here. In the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" etc. are based on the orientation or positional relationship shown in the accompanying drawings.

[0036] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0037] like Figure 1 , a containerized geothermal heating station, consisting of four parts: a base 16, a geothermal water treatment device, a heat exchange unit 10 and a control system 9. After the geothermal water supply passes through the geothermal water treatment device to separate the impurities and gases in the geothermal water, it enters the heat exchange unit 10 and undergoes two-stage heat exchange with the circulating return water on the heating side, and then enters the geothermal water treatment device for secondary gas separation to ensure the reinjection effect of the geothermal water. The circulating return water on the heating side enters the heat exchange unit 10, is pressurized by the circulating water pump 5, enters the plate heat exchanger, exchanges heat with the geothermal water supply, and is supplied to the user end after being heated. At the same time, a water tank 7 and a water supply pump 6 are provided to replenish water and set the pressure of the heating system. The above equipment is highly integrated and fixedly connected together through the base 16, and is prefabricated in the project, which improves the economy and shortens the construction period.

[0038] The upper end of the base 16 is fixedly connected with a geothermal water treatment device, a heat exchange unit 10 and a control system 9. The geothermal water treatment device is installed on the right side of the base 16, the heat exchange unit 10 is installed in the middle of the base 16, and the control system 9 is installed on the left side of the base 16.

[0039] The geothermal water pretreatment device is composed of a cyclone desander 1, a primary air-water separator 2, a secondary air-water separator 8, an electric drain valve, an electric exhaust valve, a geothermal water supply main pipe 11, a geothermal return water main pipe 12, etc. The geothermal water supply enters the cyclone desander 1 through the geothermal water supply main pipe 11, and the geothermal water supply after desandering enters the primary air-water separator 2 from the top of the cyclone desander 1. The impurities are discharged through the electric drain valve at the bottom of the cyclone desander 1 according to the set time. The geothermal water supply undergoes initial air-water separation in the primary air-water separator 2 to ensure the heat exchange effect. The geothermal water supply after the initial separation enters the No. 1 plate heat exchanger 3 and the No. 2 plate heat exchanger 4 in the heat exchange unit 10 for two-stage heat exchange, and the geothermal water return water after heat exchange enters the secondary air-water separator 8 for secondary separation.

[0040] The heat exchange unit 10 is composed of a No. 1 plate heat exchanger 3, a No. 2 plate heat exchanger 4, a circulating water pump 5, a water supply pump 6, a water tank 7, a heating side water supply main pipe 14, a heating side return water main pipe 13, a municipal tap water supply pipe 15, a decontaminator and a basket filter.

[0041] After the geothermal water supply is desanded and exhausted by the geothermal water treatment device, it enters the basket filter through the geothermal water supply main pipe 11 for re-filtration. The filtered impurities are discharged through the drain valve at the lower end of the basket filter. The geothermal water supply enters the No. 1 plate heat exchanger 3 for the first heat exchange. The geothermal water supply after heat exchange enters the No. 2 plate heat exchanger 4 for the secondary heat exchange. The two-stage plate heat exchangers can be installed in series or in parallel.

[0042] When installed in series: the geothermal water of the No. 1 plate heat exchanger 3 is arranged as top inlet and bottom outlet, and the geothermal water of the No. 2 plate heat exchanger 4 is arranged as bottom inlet and top outlet. The two-stage plate heat exchangers are installed in series, and the geothermal return water after heat exchange in the No. 2 plate heat exchanger is re-injected after secondary exhaust of the geothermal water treatment device. Electric valves and inlet and outlet differential pressure gauges are provided on the geothermal water inlet and outlet pipelines of the two-stage plate heat exchangers, and the geothermal water inlets of the two-stage plate heat exchangers are bridged to the geothermal water return main pipe 12 through backwash pipes, and the geothermal water outlets of the two-stage plate heat exchangers are bridged to the geothermal water supply main pipe 11 through backwash pipes. Electric valves are provided on the backwash pipes. When the geothermal water inlet and outlet differential pressure indication numbers of the two-stage plate heat exchangers exceed the normal value, the electric valve on the backwash pipe is opened, and the electric valve on the inlet and outlet pipelines of the plate heat exchanger is closed to realize automatic backwashing of the two-stage plate heat exchanger and ensure the heat exchange effect.

[0043] When installed in parallel, the geothermal water direction of the No. 1 plate heat exchanger 3 is arranged from top to bottom, and the geothermal water direction of the No. 2 plate heat exchanger 4 is arranged from top to bottom. The No. 1 plate heat exchanger 3 and the No. 2 plate heat exchanger 4 are installed in parallel.

[0044] The circulating return water on the heating side enters the decontamination device through the return water main pipe 13 on the heating side. After being filtered by the decontamination device, the circulating return water on the heating side is connected to the water inlet of the circulating water pump 5 through the return water main pipe 13 on the heating side. The two circulating water pumps 5 are installed in parallel, and the water inlets are both connected to the return water main pipe 13 on the heating side. The return water on the heating side, which is pressurized by the circulating water pump 5, enters the No. 2 plate heat exchanger 4 through the return water main pipe 13 on the heating side for the first heating. The heated circulating water on the heating side enters the No. 1 plate heat exchanger 3 for the second heating. The No. 2 plate heat exchanger 4 heats the The side interface is arranged with top inlet and bottom outlet, the heating side interface of the No. 1 plate heat exchanger 3 is arranged with bottom inlet and top outlet, the two-stage plate heat exchanger is installed in series, and the circulating water supply on the heating side after secondary heating is supplied to the user end through the heating side water supply mother pipe 14; the heating side return water mother pipe between the circulating water pump 5 inlet and the decontamination device is connected to the water replenishment interface, and a water replenishment pump 6 is provided for constant pressure water replenishment on the heating side, the outlet of the water replenishment pump is connected to the heating side return water mother pipe 13, and the inlet is connected to the outlet of the water tank 7, and the inlet of the water tank 7 is connected to the municipal tap water replenishment pipe 15.

[0045] The remote pressure gauge and remote temperature gauge of the control system 9 are arranged on the inlet and outlet pipelines of each device to detect the operation status of each device. The liquid level meter is installed on the primary gas-water separator 2 and the secondary gas-water separator 8. The liquid level meter is used to control the opening degree of the electric air release valve.

[0046] The water tank 7 is provided with a liquid level meter configured to monitor the water level in the water tank. A low water level alarm is provided on the liquid level meter, and the water supply pump 6 is interlockedly shut down when the low water level alarm is sounded.

[0047] Flow meters are installed at the outlets of the municipal tap water make-up pipe 15 and the make-up pump 6, and remote pressure differential gauges and electric valves are installed on the inlet and outlet pipelines of the No. 1 plate heat exchanger 3 and the No. 2 plate heat exchanger 4; a remote pressure gauge is installed on the geothermal water supply main pipe 11, and a low alarm and a low-low alarm are set on the remote pressure gauge. When the low-low alarm occurs, the circulating water pump 5 is shut down in an interlocking manner.

[0048] The control system 9 is composed of a remote pressure gauge, a remote temperature gauge, a liquid level meter, a flow meter, a remote pressure differential gauge, an electric valve and a frequency conversion interlock. Remote pressure gauges and remote temperature gauges are arranged on the inlet and outlet pipelines of each device to detect the operating conditions of each device. The liquid level gauges arranged on the primary gas-water separator 2 and the secondary gas-water separator 8 are used to control the opening degree of the electric vent valve to ensure the stable operation of the gas-water separator. The liquid level gauge arranged on the water tank 7 is used to monitor the water level of the water tank. A low water level alarm is set to prevent the water supply pump 6 from running idle and burning the pump. The flow meter is mainly arranged on the municipal tap water supply pipe 15 and the outlet of the water supply pump 6 to detect the system water supply amount and whether there is leakage. The remote pressure differential gauge and electric valve are mainly arranged on the inlet and outlet pipelines of the two-stage plate heat exchanger to monitor the heat exchange effect of the plate heat exchanger and control the start-up of the backwash module. The frequency conversion interlock is mainly set on the circulating water pump 5 and the water supply pump 6 to reduce the power consumption of the water pump according to actual needs, save electricity consumption and reduce operating costs. The above monitoring data are all output to the control system through electrical signals to achieve high automation and real-time adjustment of the containerized geothermal heating station.

[0049] This patent embodiment is applicable to geothermal water outlet temperature 110℃, water volume 2500m 3 / d, reinjection temperature 43℃, circulation return water temperature 40℃ on the heating side, and supply water temperature 90℃, its dimensions are 15m×3.4m×4.1m, geothermal water supply main pipe 11, geothermal return water main pipe 12, heating side water supply main pipe 14 and heating side return water main pipe 13 are all DN200 in diameter, municipal tap water replenishment pipe 15 is DN50 in diameter, cyclone desander, primary air-water separator 2 and secondary air-water separator 8 are all capable of handling 130m 3 / h, the heat exchange area of ​​the two-stage plate heat exchanger is 113m 2 , the circulating water pump flow is 270m 3 / d, the head is 54m, the flow rate of the water supply pump is 5m 3 / d, head is 24m, water tank capacity is 3m 3 .

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A containerized geothermal heating station, characterized in that: include: A base (16), a geothermal water treatment device, a heat exchange unit (10), and a control system (9), wherein the geothermal water treatment device, the heat exchange unit (10), and the control system (9) are fixedly mounted on the upper end of the base (16); The geothermal water treatment device comprises a cyclone desander (1), a primary gas-water separator (2), and a secondary gas-water separator (8); the cyclone desander (1) is used to separate impurities in the geothermal water, and the primary gas-water separator (2) and the secondary gas-water separator (8) are used to separate gas in the geothermal water.

2. The containerized geothermal heating station according to claim 1, characterized in that: The heat exchange unit (10) comprises a No. 1 plate heat exchanger (3), a No. 2 plate heat exchanger (4), a circulating water pump (5), a water supply pump (6), a water tank (7), a heating side water supply main pipe (14), a heating side return water main pipe (13), and a municipal tap water supply pipe (15). The heating side return water main pipe (13) is connected to the water inlet of the circulating water pump (5). The heating side return water main pipe (13) is connected to the No. 2 plate heat exchanger (4) and the No. 1 plate heat exchanger (3) in sequence after passing through the circulating water pump (5). The No. 2 plate heat exchanger (4) is connected to the geothermal return water main pipe (12). The municipal tap water supply pipe (15) is connected to the water supply pump (6) after passing through the water tank (7).

3. The containerized geothermal heating station according to claim 2, characterized in that: The geothermal water treatment device further comprises a geothermal water supply main pipe (11) and a geothermal water return main pipe (12); a cyclone desander (1) and a primary gas-water separator (2) are sequentially installed on the geothermal water supply main pipe (11); an electric drain valve and an electric exhaust valve are installed at the bottom of the cyclone desander (1); and a secondary gas-water separator (8) is installed on the geothermal water return main pipe (12); The primary gas-water separator (2) of the geothermal water supply main pipe (11) is connected to the secondary gas-water separator (8) of the geothermal water return main pipe (12) via a No. 1 plate heat exchanger (3) and a No. 2 plate heat exchanger (4); the heating side water return main pipe (13) is connected to the heating side water supply main pipe (14) via a plate heat exchanger to supply water to the user end.

4. The containerized geothermal heating station according to claim 3, characterized in that: The heat exchange unit (10) comprises a basket filter, and the geothermal water supply main pipe (11) is provided with a basket filter between the primary gas-water separator (2) and the first plate heat exchanger (3), and a drain valve is provided at the lower end of the basket filter.

5. The containerized geothermal heating station according to claim 3, characterized in that: Flow meters are installed at the outlets of the municipal tap water supply pipe (15) and the supply pump (6); remote pressure differential gauges and electric valves are installed on the inlet and outlet pipelines of the No. 1 plate heat exchanger (3) and the No. 2 plate heat exchanger (4); a remote pressure gauge is installed on the geothermal water supply main pipe (11), and a low alarm and a low-low alarm are set on the remote pressure gauge. When the low-low alarm is triggered, the circulating water pump (5) is interlocked and shut down.

6. The containerized geothermal heating station according to claim 3, characterized in that: The control system (9) includes a remote pressure gauge, a remote temperature gauge, a liquid level meter, a flow meter, a remote differential pressure gauge, an electric valve and a frequency conversion interlock, and the monitoring data are output to the control system (9) via electrical signals; The remote pressure gauge and remote temperature gauge of the control system (9) are arranged on the inlet and outlet pipelines of each device to detect the operation status of each device. The liquid level meter is installed on the primary gas-water separator (2) and the secondary gas-water separator (8). The liquid level meter is used to control the opening degree of the electric air release valve.

7. The containerized geothermal heating station according to claim 2, characterized in that: The circulating water pump (5) and the water replenishment pump (6) are equipped with a variable frequency speed regulation system.

8. The containerized geothermal heating station according to claim 2, characterized in that: The geothermal water direction of the No. 1 plate heat exchanger (3) is arranged in a top-in and bottom-out direction, and the geothermal water direction of the No. 2 plate heat exchanger (4) is arranged in a bottom-in and top-out direction. The No. 1 plate heat exchanger (3) and the No. 2 plate heat exchanger (4) are installed in series; The geothermal water direction of the No. 1 plate heat exchanger (3) is arranged in a top-in and bottom-out manner, and the geothermal water direction of the No. 2 plate heat exchanger (4) is arranged in a top-in and bottom-out manner. The No. 1 plate heat exchanger (3) and the No. 2 plate heat exchanger (4) are installed in parallel.

9. The containerized geothermal heating station according to claim 2, characterized in that: The geothermal water inlet and outlet pipelines of the No. 1 plate heat exchanger (3) and the No. 2 plate heat exchanger (4) are both provided with electric valves and inlet and outlet differential pressure gauges; the geothermal water inlets of the No. 1 plate heat exchanger (3) and the No. 2 plate heat exchanger (4) are both bridged to the geothermal water return main pipe (12) through a backwash pipe; the geothermal water outlets of the No. 1 plate heat exchanger (3) and the No. 2 plate heat exchanger (4) are both bridged to the geothermal water supply main pipe (11) through a backwash pipe, and the backwash pipes are both provided with electric valves.

10. The containerized geothermal heating station according to claim 2, characterized in that: The heat exchange unit (10) further comprises a decontaminator, a water supply pump (6), a water tank (7), and a municipal tap water supply pipe (15); the decontaminator is installed on the heating side return water main pipe (13); the heating side return water main pipe (13) between the inlet of the circulating water pump (5) and the decontaminator is connected to a water supply interface; the water supply interface is connected to the water supply pump (6); the outlet of the water supply pump (6) is connected to the heating side return water main pipe (13); the inlet of the water supply pump (6) is connected to the outlet of the water tank (7); and the inlet of the water tank (7) is connected to the municipal tap water supply pipe (15); Wherein, a liquid level meter is installed on the water tank (7) and is configured to monitor the water level in the water tank. A low water level alarm is set on the liquid level meter, and the water supply pump (6) is interlocked and shut down when the low water level alarm is triggered.

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