CN215489940U - Modular geothermal heating system - Google Patents
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- CN215489940U CN215489940U CN202122089023.2U CN202122089023U CN215489940U CN 215489940 U CN215489940 U CN 215489940U CN 202122089023 U CN202122089023 U CN 202122089023U CN 215489940 U CN215489940 U CN 215489940U
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Abstract
The utility model relates to the technical field of geothermal resource development and utilization, and discloses a modular geothermal heating system, which comprises: the system comprises a heat exchange and circulation module, a secondary temperature raising and recycling module, a water treatment module, an automatic water replenishing module, a power distribution and automatic control module and a steel frame foundation; the heat exchange and circulation module is connected with the secondary temperature raising and recycling module through a pipeline interface, and the heat exchange and circulation module is connected with the water treatment module through a pipeline interface; the heat exchange and circulation module, the secondary temperature raising and recycling module, the water treatment module and the automatic water replenishing module are all connected with the power distribution and automatic control module through power cables; each module is respectively arranged on the steel frame foundation. The equipment is subjected to modular processing and is provided with an independent steel frame foundation, equipment of the modules is installed and fixed on the steel frame foundation in a factory workshop, the independent modules are manufactured, the independent modules can be quickly connected into a system after arriving at a site, the installation and the construction are convenient, and the construction period is saved.
Description
Technical Field
The utility model relates to the technical field of geothermal resource development and utilization, in particular to a modular geothermal heating system.
Background
Geothermal resources are clean renewable energy with large reserves, wide distribution and good stability, and the development and utilization of geothermal resources have great significance for energy conservation and emission reduction. Geothermal heating is an important mode for developing and utilizing geothermal resources, and has the advantages of cleanness, no pollution, low operation cost, high comprehensive utilization benefit of resources and the like, and the heat pump technology is added, so that the geothermal heating is generally regarded in the area with the condition of developing geothermal resources in which conventional energy is relatively short, and has obvious economic and social benefits, and the development prospect is wide.
The existing geothermal heating system is composed of components such as a cyclone sand remover, a dirt remover, a booster pump, a plate heat exchanger, a water source heat pump unit, a circulating pump, a water replenishing pump, a water tank, a softened water device, a primary filter, a secondary filter, a valve, an instrument, an electric control and the like. Because of the restriction of site environment and conditions, the installation quality can not be guaranteed, a large amount of manpower and time are consumed, the production efficiency is low, and the construction is not beneficial to batch and convenient construction.
SUMMERY OF THE UTILITY MODEL
The utility model provides a modular geothermal heating system, which aims to solve the problems that the installation quality cannot be guaranteed due to the limitation of site environment and conditions, a large amount of time and production efficiency are consumed, and the mass and convenient construction is not facilitated.
In order to achieve the above purpose, the utility model provides the following technical scheme:
a modular geothermal heating system comprising: the system comprises a heat exchange and circulation module, a secondary temperature raising and recycling module, a water treatment module, an automatic water replenishing module, a power distribution and automatic control module and a steel frame foundation;
the heat exchange and circulation module, the secondary temperature raising and recycling module, the water treatment module and the automatic water replenishing module are all provided with pipeline interfaces, the heat exchange and circulation module is connected with the secondary temperature raising and recycling module through the pipeline interfaces, and the heat exchange and circulation module is connected with the water treatment module through the pipeline interfaces;
the heat exchange and circulation module, the secondary temperature raising and recycling module, the water treatment module and the automatic water replenishing module are all connected with the power distribution and automatic control module through power cables;
the heat exchange and circulation module, the secondary temperature-raising recycling module, the water treatment module, the automatic water replenishing module and the power distribution and automatic control module are respectively arranged on a steel frame foundation.
Further, the heat exchange and circulation module comprises: the system comprises a primary plate type heat exchanger, a secondary side main circulating pump and a secondary side standby circulating pump; the primary plate type heat exchanger is connected with the secondary plate type heat exchanger, and the secondary side main circulating pump and the secondary side standby circulating pump are connected in parallel and are connected with the primary plate type heat exchanger; the primary plate type heat exchanger, the secondary side main circulating pump and the secondary side standby circulating pump are fixed on a steel frame foundation to form a heat exchange and circulation module.
Further, the secondary temperature raising and recycling module comprises: the system comprises a water source heat pump unit, a main intermediate water circulating pump and a standby intermediate water circulating pump; the main intermediate water circulating pump and the standby intermediate water circulating pump are connected in parallel and are connected with the water source heat pump unit; the water source heat pump unit, the main intermediate water circulating pump and the standby intermediate water circulating pump are fixed on the steel frame foundation to form a secondary temperature-raising recycling module.
Further, the water treatment module comprises: the system comprises a cyclone desander, a dirt separator, a pressure pump, a primary water treatment device A, a primary water treatment device B, a secondary water treatment device C and a secondary water treatment device D; the cyclone desander, the dirt remover and the pressure pump are sequentially connected; the primary water treatment device A and the primary water treatment device B are connected in parallel and are connected with a pressure pump; the secondary water treatment device C is connected with the primary water treatment device A; the secondary water treatment device D is connected with the primary water treatment device B; the cyclone desander, the dirt remover, the pressure pump, the primary water treatment device A, the primary water treatment device B, the secondary water treatment device C and the secondary water treatment device D are fixed on a steel frame foundation to form a water treatment module.
Further, the automatic water replenishing module comprises: the system comprises water softening equipment, a water storage tank, a main water replenishing pump and a standby water replenishing pump; the main water replenishing pump, the standby water replenishing pump and the water softening equipment are respectively connected with the water storage tank; the water softening equipment, the water storage tank, the main water replenishing pump and the standby water replenishing pump are fixed on the steel frame foundation to form an automatic water replenishing module.
Further, the power distribution and automatic control module comprises: the system comprises an incoming line cabinet, an outgoing line cabinet, a first variable frequency starting cabinet, a second variable frequency starting cabinet, a third variable frequency starting cabinet, a fourth variable frequency starting cabinet and an automatic control cabinet; the first variable-frequency starting cabinet is connected with a secondary side main circulating pump and a secondary side standby circulating pump in the heat exchange and circulation module through power cables; the second variable-frequency starting cabinet is connected with a main intermediate water circulating pump and a standby intermediate water circulating pump in the secondary temperature-raising recycling module through power cables; the third variable-frequency starting cabinet is connected with a pressure pump in the water treatment module through a power cable; the fourth variable-frequency starting cabinet is connected with a main water replenishing pump and a standby water replenishing pump in the automatic water replenishing module through power cables; the incoming line cabinet, the outgoing line cabinet, the first frequency conversion starting cabinet, the second frequency conversion starting cabinet, the third frequency conversion starting cabinet, the fourth frequency conversion starting cabinet and the automatic control cabinet are connected through power cables and fixed on a steel frame foundation to form a power distribution and automatic control module.
Furthermore, the steel frame foundation is provided with connecting bolt fixing holes, and the equipment in the heat exchange and circulation module, the secondary temperature raising and recycling module, the water treatment module, the automatic water replenishing module and the power distribution and automatic control module are fixedly connected with the corresponding steel frame foundation by screws; the steel frame foundation and the foundation are fixedly connected through expansion screws.
Furthermore, the pipeline interfaces of the heat exchange and circulation module, the secondary temperature raising and recycling module, the water treatment module and the automatic water replenishing module are all flange interfaces.
Compared with the prior art, the utility model has at least the following beneficial technical effects:
1. the equipment is subjected to modular processing and is provided with an independent steel frame foundation, equipment of the modules is installed and fixed on the steel frame foundation in a factory workshop, the independent modules are manufactured, the independent modules can be quickly connected into a system after arriving at a site, the installation and the construction are convenient, and the construction period is saved.
2. And each module is assembled, debugged and tested in a factory workshop, so that the construction condition is good, and the construction quality is better guaranteed.
3. The modular design and manufacture are adopted, and each module can be independently produced and manufactured, so that the mass and convenient production is facilitated, and the labor production efficiency is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a plan view of a modular geothermal heating system according to the present invention;
FIG. 2 is a schematic view of the heat exchange and circulation module structure of the present invention;
FIG. 3 is a schematic structural diagram of a secondary temperature raising and recycling module according to the present invention;
FIG. 4 is a schematic view of a water treatment module according to the present invention;
FIG. 5 is a schematic diagram of an automatic water replenishing module according to the present invention;
fig. 6 is a schematic structural diagram of a power distribution and automatic control module according to the present invention.
Reference numerals: m1, a heat exchange and circulation module; m2, a secondary temperature raising and recycling module; m3, a water treatment module; m4, an automatic water replenishing module; m5, power distribution and automatic control module; 1. a primary plate heat exchanger; 2. a secondary plate heat exchanger; 3. a secondary side main circulating pump; 4. a secondary side standby circulating pump; 5. a first external pipeline interface; 6. a second external pipeline interface; 7. a third external pipeline interface; 8. a fourth pipeline external interface; 9. a fifth external pipeline interface; 10. a sixth external pipeline interface; 11. a water source heat pump unit; 12. a main intermediate water circulating pump; 13. a spare intermediate water circulating pump; 14. a seventh external pipeline interface; 15. an eighth external pipeline interface; 16. a ninth pipeline external interface; 17. a tenth external pipeline interface; 18. an eleventh external pipeline interface; 19. a cyclone desander; 20. a dirt separator; 21. a pressure pump; 22. a primary water treatment unit A; 23. a primary water treatment unit B; 24. a secondary water treatment device C; 25. a secondary water treatment device D; 26. a twelfth external pipeline interface; 27. a water storage tank; 28. a water softening apparatus; 29. a main water replenishing pump; 30. a spare water replenishing pump is used; 31. a thirteenth external pipeline interface; 32. a wire inlet cabinet; 33. an outgoing line cabinet; 34. a first variable frequency starting cabinet; 35. a second variable frequency starting cabinet; 36. a third variable frequency starting cabinet; 37. a fourth variable frequency starting cabinet; 38. an automatic control cabinet.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the utility model. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model.
The utility model is further described below with reference to the accompanying drawings.
Example 1
The present invention provides a modular geothermal heating system, as shown in fig. 1, comprising: the system comprises a heat exchange and circulation module M1, a secondary temperature raising and recycling module M2, a water treatment module M3, an automatic water replenishing module M4 and a power distribution and automatic control module M5; each module is provided with an independent rectangular steel frame foundation, and equipment of each module is connected through a pipeline and is arranged on an upper module of the steel frame foundation of the corresponding module; the heat exchange and circulation module M1, the secondary temperature raising and recycling module M2, the water treatment module M3 and the automatic water replenishing module M4 are all provided with pipeline interfaces, wherein the heat exchange and circulation module M1 is connected with the secondary temperature raising and recycling module M2, and the heat exchange and circulation module M1 is connected with the water treatment module M3; the heat exchange and circulation module M1, the secondary temperature raising and recycling module M2, the water treatment module M3 and the automatic water replenishing module M4 are all connected with the power distribution and automatic control module M5 through power cables.
As shown in fig. 2, the heat exchange and circulation module M1 includes: the system comprises a primary plate type heat exchanger 1, a secondary plate type heat exchanger 2, a secondary side main circulating pump 3 and a secondary side standby circulating pump 4; the primary plate type heat exchanger 1 is connected with the secondary plate type heat exchanger 2, and the secondary side main circulating pump 3 and the secondary side standby circulating pump 4 are connected in parallel and are connected with the primary plate type heat exchanger 1; the equipment is fixed on the steel frame base to form a heat exchange and circulation module M1. The heat exchange and circulation module M1 further comprises: a first pipeline external interface 5, a second pipeline external interface 6, a third pipeline external interface 7, a fourth pipeline external interface 8, a fifth pipeline external interface 9 and a sixth pipeline external interface 10; the first external pipeline interface 5 is connected with a district heat supply water return pipeline, the second external pipeline interface 6 is connected with a district heat supply water supply pipeline, the third external pipeline interface 7 is connected with a twelfth external pipeline interface 26 in the water treatment module M3, the fourth external pipeline interface 8 is connected with a geothermal recharging well pipeline, the fifth external pipeline interface 9 is connected with an eighth external pipeline interface 15 in the secondary temperature-raising recycling module M2, and the sixth external pipeline interface 10 is connected with a seventh external pipeline interface 14 in the secondary temperature-raising recycling module M2.
As shown in fig. 3, the secondary temperature raising reuse module M2 includes: a water source heat pump unit 11, a main intermediate water circulating pump 12 and a standby intermediate water circulating pump 13; the main intermediate water circulating pump 12 and the standby intermediate water circulating pump 13 are connected in parallel and are connected with the water source heat pump unit 11; the equipment is fixed on the steel frame foundation to form a secondary temperature-raising recycling module M2. The secondary temperature raising and recycling module M2 further includes: a seventh external pipeline interface 14, an eighth external pipeline interface 15, a ninth external pipeline interface 16 and a tenth external pipeline interface 17; the seventh external pipeline connector 14 is connected with the sixth external pipeline connector 10 in the heat exchange and circulation module M1, the eighth external pipeline connector 15 is connected with the fifth external pipeline connector 9 in the heat exchange and circulation module M1, the ninth external pipeline connector 16 is connected with a district heat supply water return pipeline, and the tenth external pipeline connector 17 is connected with a district heat supply water supply pipeline.
As shown in fig. 4, the water treatment module M3 includes: a cyclone desander 19, a dirt separator 20, a pressure pump 21, a primary water treatment device A22, a primary water treatment device B23, a secondary water treatment device C24 and a secondary water treatment device D25; the cyclone desander 19, the dirt separator 20 and the pressure pump 21 are connected in sequence; the primary water treatment device A22 and the primary water treatment device B23 are connected in parallel and are connected with the pressure pump 21; the secondary water treatment device C24 is connected with the primary water treatment device A22; the secondary water treatment device D25 is connected with the primary water treatment device B23; the equipment is fixed on the steel frame base to form a water treatment module M3. The water treatment module M3 further includes an eleventh line male interface 18 and a twelfth line male interface 26; the eleventh external pipe connector 18 is connected with the geothermal exploitation well pipe, and the twelfth external pipe connector 26 is connected with the third external pipe connector 7 of the heat exchange and circulation module M1.
As shown in fig. 5, the automatic refill module M4 includes: a water softening device 28, a water storage tank 27, a main water replenishing pump 29 and a standby water replenishing pump 30; the main water replenishing pump 29, the standby water replenishing pump 30 and the water softening equipment 28 are respectively connected with the water storage tank 27; the equipment is fixed on the steel frame foundation to form an automatic water replenishing module M4. The automatic water replenishing module M4 further comprises a thirteenth pipeline external interface 31; the thirteenth external pipeline interface 31 is connected with a district heat supply water return pipeline.
As shown in fig. 6, the power distribution and automatic control module M5 includes: an incoming line cabinet 32, an outgoing line cabinet 33, a first variable frequency starting cabinet 34, a second variable frequency starting cabinet 35, a third variable frequency starting cabinet 36, a fourth variable frequency starting cabinet 37 and an automatic control cabinet 38; the first variable frequency starting cabinet 34 is connected with a secondary side main circulating pump 3 and a secondary side standby circulating pump 4 in the heat exchange and circulation module M1 through power cables; the second variable-frequency starting cabinet 35 is connected with the main intermediate water circulating pump 12 and the standby intermediate water circulating pump 13 in the secondary temperature-raising recycling module M2 through power cables; the third variable-frequency starting cabinet 36 is connected with the booster pump 21 in the water treatment module M3 through a power cable; the fourth variable-frequency starting cabinet 37 is connected with the main water replenishing pump 29 and the standby water replenishing pump 30 in the automatic water replenishing module M4 through power cables; the incoming line cabinet 32, the outgoing line cabinet 33, the first frequency conversion starting cabinet 34, the second frequency conversion starting cabinet 35, the third frequency conversion starting cabinet 36, the fourth frequency conversion starting cabinet 37 and the automatic control cabinet 38 are connected through power cables; the equipment is fixed on the steel frame base to form a power distribution and automatic control module M5. The devices are connected through power cables and signal transmission lines.
Example 2
The utility model provides a method for installing a modular geothermal heating system, which comprises the following steps:
the geothermal heating system is a closed circulating system consisting of a rotational flow sand remover 19, a dirt remover 20, a booster pump 21, a plate heat exchanger, a water source heat pump unit 11, a circulating pump, a water replenishing pump, a water storage tank 27, softened water equipment 28, a primary water treatment device, a secondary water treatment device, a valve, an instrument, an electric control device and the like.
The equipment in the geothermal heat supply system is optimally designed and combined according to the process technology, and a modularized geothermal heat supply system is formed by a solidification form structure, and the system consists of five modules, namely a heat exchange and circulation module M1, a secondary temperature raising and recycling module M2, a water treatment module M3, an automatic water replenishing module M4 and a power distribution and automatic control module M5.
Equipment in the heat exchange and circulation module M1, the secondary temperature raising and recycling module M2, the water treatment module M3, the automatic water replenishing module M4 and the power distribution and automatic control module M5 are respectively assembled with corresponding steel frame foundations in a factory workshop, and debugging and testing are carried out on each module;
the heat exchange and circulation module M1, the secondary temperature raising and recycling module M2, the water treatment module M3, the automatic water replenishing module M4 and the power distribution and automatic control module M5 arrive at the site to be connected into a system.
The steel frame foundation is provided with connecting bolt fixing holes, and equipment in the heat exchange and circulation module M1, the secondary temperature raising and recycling module M2, the water treatment module M3, the automatic water replenishing module M4 and the power distribution and automatic control module M5 are fixedly connected with the corresponding steel frame foundation through screws; the steel frame foundation and the foundation are fixedly connected by expansion screws.
The pipeline interfaces of the heat exchange and circulation module M1, the secondary temperature raising and recycling module M2, the water treatment module M3 and the automatic water replenishing module M4 are all flange interfaces.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the utility model without departing from the spirit and scope of the utility model, which is to be covered by the claims.
Claims (8)
1. A modular geothermal heating system, comprising: the system comprises a heat exchange and circulation module (M1), a secondary temperature raising and recycling module (M2), a water treatment module (M3), an automatic water replenishing module (M4), a power distribution and automatic control module (M5) and a steel frame foundation;
the heat exchange and circulation module (M1), the secondary temperature-raising recycling module (M2), the water treatment module (M3) and the automatic water replenishing module (M4) are all provided with pipeline interfaces, wherein the heat exchange and circulation module (M1) is connected with the secondary temperature-raising recycling module (M2) through the pipeline interfaces, and the heat exchange and circulation module (M1) is connected with the water treatment module (M3) through the pipeline interfaces;
the heat exchange and circulation module (M1), the secondary temperature raising and recycling module (M2), the water treatment module (M3) and the automatic water replenishing module (M4) are all connected with the power distribution and automatic control module (M5) through power cables;
the heat exchange and circulation module (M1), the secondary temperature raising and recycling module (M2), the water treatment module (M3), the automatic water replenishing module (M4) and the power distribution and automatic control module (M5) are respectively arranged on a steel frame foundation.
2. A modular geothermal heating system according to claim 1, wherein the heat exchanging and circulating module (M1) comprises: the system comprises a primary plate type heat exchanger (1), a secondary plate type heat exchanger (2), a secondary side main circulating pump (3) and a secondary side standby circulating pump (4); the primary plate type heat exchanger (1) is connected with the secondary plate type heat exchanger (2), and the secondary side main circulating pump (3) and the secondary side standby circulating pump (4) are connected in parallel and are connected with the primary plate type heat exchanger (1); the primary plate type heat exchanger (1), the secondary plate type heat exchanger (2), the secondary side main circulating pump (3) and the secondary side standby circulating pump (4) are fixed on a steel frame foundation to form a heat exchange and circulating module (M1).
3. A modular geothermal heating system according to claim 2, wherein the secondary temperature raising and re-use module (M2) comprises: a water source heat pump unit (11), a main intermediate water circulating pump (12) and a standby intermediate water circulating pump (13); the main intermediate water circulating pump (12) and the standby intermediate water circulating pump (13) are connected in parallel and are connected with the water source heat pump unit (11); the water source heat pump unit (11), the main intermediate water circulating pump (12) and the standby intermediate water circulating pump (13) are fixed on the steel frame basis to form a secondary temperature-raising recycling module (M2).
4. A modular geothermal heating system according to claim 3, wherein the water treatment module (M3) comprises: a cyclone sand remover (19), a dirt remover (20), a pressure pump (21), a primary water treatment device A (22), a primary water treatment device B (23), a secondary water treatment device C (24) and a secondary water treatment device D (25); the cyclone desander (19), the dirt separator (20) and the pressure pump (21) are connected in sequence; the primary water treatment device A (22) and the primary water treatment device B (23) are connected in parallel and are connected with a pressure pump (21); the secondary water treatment device C (24) is connected with the primary water treatment device A (22); the secondary water treatment device D (25) is connected with the primary water treatment device B (23); the cyclone desander (19), the dirt separator (20), the pressure pump (21), the primary water treatment device A (22), the primary water treatment device B (23), the secondary water treatment device C (24) and the secondary water treatment device D (25) are fixed on a steel frame foundation to form a water treatment module (M3).
5. A modular geothermal heating system according to claim 4, wherein the automatic water supplement module (M4) comprises: the system comprises a water softening device (28), a water storage tank (27), a main water replenishing pump (29) and a standby water replenishing pump (30); the main water replenishing pump (29), the standby water replenishing pump (30) and the water softening equipment (28) are respectively connected with the water storage tank (27); the water softening equipment (28), the water storage tank (27), the main water replenishing pump (29) and the standby water replenishing pump (30) are fixed on a steel frame foundation to form an automatic water replenishing module (M4).
6. A modular geothermal heating system according to claim 5, wherein the power distribution and control module (M5) comprises: the system comprises a wire inlet cabinet (32), a wire outlet cabinet (33), a first variable-frequency starting cabinet (34), a second variable-frequency starting cabinet (35), a third variable-frequency starting cabinet (36), a fourth variable-frequency starting cabinet (37) and an automatic control cabinet (38); the first variable-frequency starting cabinet (34) is connected with a secondary side main circulating pump (3) and a secondary side standby circulating pump (4) in the heat exchange and circulation module (M1) through power cables; the second variable-frequency starting cabinet (35) is connected with a main intermediate water circulating pump (12) and a standby intermediate water circulating pump (13) in the secondary temperature-raising recycling module (M2) through power cables; the third variable-frequency starting cabinet (36) is connected with a booster pump (21) in the water treatment module (M3) through a power cable; the fourth variable-frequency starting cabinet (37) is connected with a main water replenishing pump (29) and a standby water replenishing pump (30) in the automatic water replenishing module (M4) through power cables; the incoming line cabinet (32), the outgoing line cabinet (33), the first variable-frequency starting cabinet (34), the second variable-frequency starting cabinet (35), the third variable-frequency starting cabinet (36), the fourth variable-frequency starting cabinet (37) and the automatic control cabinet (38) are connected through power cables and fixed on a steel frame foundation to form a power distribution and automatic control module (M5).
7. A modular geothermal heating system according to claim 6, wherein the steel frame foundation is provided with connecting bolt fixing holes, and the equipment in the heat exchange and circulation module (M1), the secondary temperature raising and recycling module (M2), the water treatment module (M3), the automatic water replenishing module (M4) and the power distribution and automatic control module (M5) are fixedly connected with the corresponding steel frame foundation by screws; the steel frame foundation and the foundation are fixedly connected through expansion screws.
8. A modular geothermal heating system according to claim 7, wherein the pipe connections of the heat exchange and circulation module (M1), the secondary temperature raising and recycling module (M2), the water treatment module (M3) and the automatic water replenishing module (M4) are flange connections.
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| WO2023029409A1 (en) * | 2021-08-31 | 2023-03-09 | 中国华能集团清洁能源技术研究院有限公司 | Modularized geothermal heat supply system and installation method |
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| WO2023029409A1 (en) * | 2021-08-31 | 2023-03-09 | 中国华能集团清洁能源技术研究院有限公司 | Modularized geothermal heat supply system and installation method |
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