CN219264399U - Heating system based on medium-deep underground heat exchange and two-stage compression screw heat pump - Google Patents
Heating system based on medium-deep underground heat exchange and two-stage compression screw heat pump Download PDFInfo
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- CN219264399U CN219264399U CN202223528451.1U CN202223528451U CN219264399U CN 219264399 U CN219264399 U CN 219264399U CN 202223528451 U CN202223528451 U CN 202223528451U CN 219264399 U CN219264399 U CN 219264399U
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Abstract
The utility model relates to the technical field of geothermal development and utilization, in particular to a heating system based on medium-deep underground heat exchange and a two-stage compression screw heat pump, which comprises a two-stage compression screw heat pump unit, medium-deep underground geothermal heat exchange, a ground source heat pump host, a first electric valve, a cloud control platform, a medium-deep geothermal circulating pump, a heating circulating pump, a first heat meter, a second heat meter, a third heat meter, a temperature and humidity monitor, a heat user, a water outlet pipeline and a water return pipeline. The utility model has the advantages that: the intelligent heat supply system is more reasonable in structural design, and the intelligent heat supply system is efficient, stable and easy to adjust by reasonably utilizing the cooperation of the underground heat exchange of the middle and deep layers, the two-stage compression screw heat pump unit and the intelligent system technology, so that the operation efficiency of the heat supply system can be effectively improved, the operation cost is reduced, and the problems that a host machine is greatly influenced by the environment, the system operation cop is lower and frosting exists in extremely cold weather are solved.
Description
Technical Field
The utility model relates to the technical field of geothermal development and utilization, in particular to a heating system based on underground heat exchange in a middle-deep layer and a double-stage compression screw heat pump.
Background
In engineering application of a heat supply system of the double-stage compression screw heat pump unit, the efficiency of the double-stage compression screw heat pump unit with an air source heat source is influenced by environmental temperature change in the initial cold stage, the final cold stage and the extremely cold weather, the efficiency of the initial cold stage and the final cold stage is higher, the efficiency of a main machine of the air source heat pump in the initial cold stage and the final cold stage is higher, the integral cop can reach more than 3.0, the main machine is greatly influenced by the environment in the extremely cold weather, the system operation cop is lower and is about 2.0, the frosting problem also exists, and the heat load requirement of the heat supply system is maximum at the moment; meanwhile, the heat source form with stable heat exchange under the underground of the middle-deep geothermal can be combined with the ground source heat pump host machine to be used as one of stable heat sources of a heat supply system.
Therefore, the utility model provides a heating system based on medium-deep underground heat exchange and a double-stage screw heat pump and an operation mode, and provides a solution for solving the problem of stabilizing the heating system of the double-stage compression screw heat pump.
Disclosure of Invention
The object of the present utility model is to solve at least one of the technical drawbacks.
Therefore, an object of the present utility model is to provide a heating system based on a medium-deep downhole heat exchange and a two-stage compression screw heat pump, so as to solve the problems mentioned in the background art and overcome the defects in the prior art.
In order to achieve the above purpose, an embodiment of an aspect of the present utility model provides a heat supply system based on a mid-deep underground heat exchange and a two-stage compression screw heat pump, which includes a two-stage compression screw heat pump unit, a mid-deep geothermal underground heat exchange, a ground source heat pump host, a first electric valve, a second electric valve, a cloud control platform, a mid-deep geothermal circulating pump, a heat supply circulating pump, a first heat meter, a second heat meter, a third heat meter, a temperature and humidity monitor, a heat user, a water outlet pipe and a water return pipe;
the input ends of the two-stage compression screw heat pump units are fixedly connected with a first backwater branch pipe, one side of the first backwater branch pipe is fixedly connected with one side of a backwater pipeline, the output ends of the two-stage compression screw heat pump units are fixedly connected with a first water outlet branch pipe, one side of the first water outlet branch pipe is fixedly connected with one side of a water outlet pipeline, and one sides of the water outlet pipeline and the backwater pipeline are fixedly connected with one side of a heat user;
one side of the water outlet pipeline is fixedly connected with a second water outlet branch pipe, one side of the second water outlet branch pipe is fixedly connected with one side of a ground source heat pump host, one side of the ground source heat pump host is fixedly connected with a third water outlet branch pipe, one side of the third water outlet branch pipe is fixedly connected with an output end of underground heat exchange of middle-deep geothermal energy, one side of the water return pipeline is fixedly connected with a second water return branch pipe, one side of the second water return branch pipe is fixedly connected with one side of the ground source heat pump host, one side of the ground source heat pump host is fixedly connected with a third water return branch pipe, and one side of the third water return branch pipe is fixedly connected with an input end of underground heat exchange of middle-deep geothermal energy;
the first electric valve, the second electric valve, the middle-deep geothermal circulating pump and the heat supply circulating pump are all connected with the cloud control platform through wires.
In any of the above schemes, it is preferable that the number of the two-stage compression screw heat pump units is several, and the two-stage compression screw heat pump units are connected in parallel.
In any of the above schemes, it is preferable that the underground heat exchange of the middle-deep geothermal well adopts a coaxial double-pipe heat exchanger.
By any of the above schemes, it is preferable that the number of the first electric valves is the same as that of the two-stage compression screw heat pump units, and the first electric valves are installed at the middle parts of the corresponding first water outlet branch pipes.
The technical effect achieved by adopting the scheme is as follows: the operation number of the double-stage compression screw heat pump unit is convenient to control.
By any of the above schemes, it is preferable that the second electric valve and the second heat meter are both installed in the middle of the second outlet branch pipe, and the middle-deep geothermal circulating pump and the third heat meter are both installed in the middle of the third outlet branch pipe.
The technical effect achieved by adopting the scheme is as follows: the device is used for detecting the temperature and the flow of the second water outlet branch.
By any of the above schemes, it is preferable that the heat supply circulating pump and the first heat meter are both installed in the middle of the water outlet pipeline.
By any of the above schemes, it is preferable that the heat supply circulation pump and the first heat meter are located at both sides of the second water outlet branch pipe, and the heat supply circulation pump is located between the second water outlet branch pipe and the heat user.
The technical effect achieved by adopting the scheme is as follows: the heating cycle provides power.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
the intelligent heat supply system is more reasonable in structural design, and by reasonably utilizing the cooperation of the middle-deep underground heat exchange and two-stage compression screw heat pump unit and the intelligent system technology, the intelligent heat supply system is high in efficiency, stable and easy to adjust, the operation efficiency of the heat supply system can be effectively improved, the operation cost is reduced, the problems that a host machine is greatly influenced by the environment, the system operation cop is low and frosting exists in extremely cold weather are solved, and the practicability of the system is ensured.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of the overall structure according to an embodiment of the present utility model;
FIG. 2 is a schematic view of a first portion of an embodiment of the present utility model;
fig. 3 is a schematic structural view of a second part according to an embodiment of the present utility model.
In the figure: the system comprises a 1-double-stage compression screw heat pump unit, 2-underground heat exchange of middle and deep geothermal heat, a 3-ground source heat pump host, 4-first electric valves, 5-second electric valves, a 6-cloud control platform, 7-underground geothermal circulating pumps, 8-heat supply circulating pumps, 9-first heat meters, 10-second heat meters, 11-third heat meters, 12-temperature and humidity monitors, 13-heat users, 14-water outlet pipes and 15-water return pipes.
Detailed Description
Examples: as shown in fig. 1-3, a heating system based on a middle-deep underground heat exchange and a two-stage compression screw heat pump comprises a two-stage compression screw heat pump unit 1, a middle-deep underground geothermal heat exchange 2, a ground source heat pump host 3, a first electric valve 4, a second electric valve 5, a cloud control platform 6, a middle-deep geothermal circulating pump 7, a heating circulating pump 8, a first heat meter 9, a second heat meter 10, a third heat meter 11, a temperature and humidity monitor 12, a heat user 13, a water outlet pipeline 14 and a water return pipeline 15, wherein the first heat meter 9, the second heat meter 10 and the third heat meter 11 can detect the flow of the heat while detecting the heat (known technology);
the input end of the two-stage compression screw heat pump unit 1 is fixedly connected with a first water return branch pipe, one side of the first water return branch pipe is fixedly connected with one side of a water return pipeline 15, the output end of the two-stage compression screw heat pump unit 1 is fixedly connected with a first water outlet branch pipe, one side of the first water outlet branch pipe is fixedly connected with one side of a water outlet pipeline 14, and one sides of the water outlet pipeline 14 and the water return pipeline 15 are fixedly connected with one side of a heat user 13;
one side of the water outlet pipeline 14 is fixedly connected with a second water outlet branch pipe, one side of the second water outlet branch pipe is fixedly connected with one side of the ground source heat pump host 3, one side of the ground source heat pump host 3 is fixedly connected with a third water outlet branch pipe, one side of the third water outlet branch pipe is fixedly connected with an output end of the underground heat exchange 2 of the middle-deep geothermal energy, one side of the water return pipeline 15 is fixedly connected with a second water return branch pipe, one side of the second water return branch pipe is fixedly connected with one side of the ground source heat pump host 3, one side of the ground source heat pump host 3 is fixedly connected with a third water return branch pipe, and one side of the third water return branch pipe is fixedly connected with an input end of the underground heat exchange 2 of the middle-deep geothermal energy;
the first electric valve 4, the second electric valve 5, the middle-deep geothermal circulating pump 7, the heat supply circulating pump 8, the first heat meter 9, the second heat meter 10, the third heat meter 11, the temperature and humidity monitor 12 are all connected with the cloud control platform 6 through wires, the first heat meter 9 is a heat meter of an outlet branch of the double-stage compression screw heat pump unit 1, and is used for measuring the temperature and the flow of the branch and sending the collected information to the cloud control platform 6, the second heat meter 10 is a heat meter of a second outlet branch of the ground source heat pump host 3, and is used for measuring the temperature and the flow of the branch and sending the collected information to the cloud control platform 6, the third heat meter 11 is a heat meter of a third outlet branch of the middle-deep geothermal downhole heat exchange 2, and is used for measuring the temperature and the flow of the branch and sending the collected information to the cloud control platform 6, the heat supply circulating pump 8 provides power for heat supply circulation, the cloud control platform 6 is an intelligent control system (known technology) of a heat supply system, and can integrate and operate each branch information of the heat supply system, and carry out system regulation, and the temperature and humidity monitor and temperature and humidity environment can provide feedback to the cloud control platform 6 for real-time operation.
The two-stage compression screw heat pump units 1 are connected in parallel, and the two-stage compression screw heat pump units 1 are several in number.
The underground heat exchange 2 of the middle-deep geothermal heat adopts a coaxial sleeve heat exchanger, and the underground heat exchange 2 of the middle-deep geothermal heat is a coaxial sleeve heat exchanger with the well depth of 200m-3000 m.
The number of the first electric valves 4 is the same as that of the two-stage compression screw heat pump units 1, the first electric valves 4 are arranged in the middle of the corresponding first water outlet branch pipe, and the electric valves 4 are control valves for controlling the two-stage compression screw air source heat pump units.
The second electric valve 5 and the second heat meter 10 are both arranged in the middle of the second water outlet branch pipe, the middle-deep geothermal circulating pump 7 and the third heat meter 11 are both arranged in the middle of the third water outlet branch pipe, the second electric valve 5 is an electric valve of a ground source heat pump host, the remote control host can be started, the middle-deep geothermal circulating pump 7 provides power for the circulation of the middle-deep geothermal underground heat exchange 2, the middle-deep geothermal circulating pump 7 provides power for the middle-deep underground heat exchange system, the two-stage compression screw heat pump unit 1, the middle-deep geothermal underground heat exchange 2, the ground source heat pump host 3, the first electric valve 4, the second electric valve 5, the cloud control platform 6, the middle-deep geothermal circulating pump 7, the heat supply circulating pump 8, the first heat meter 9, the second heat meter 10, the third heat meter 11, the temperature and humidity monitor 12 and the like are all of the existing mature structures, and redundant description is omitted.
The heat supply circulating pump 8 and the first heat meter 9 are both arranged in the middle of the water outlet pipeline 14.
The heat supply circulation pump 8 and the first calorimeter 9 are located at both sides of the second water outlet branch pipe, and the heat supply circulation pump 8 is located between the second water outlet branch pipe and the heat user 13.
A heat supply system based on medium-deep underground heat exchange and two-stage compression screw heat pump has the following working principle:
1) According to the system, the cloud control platform 6 is used for controlling the system at the beginning and end of a heating season, the outdoor environment temperature and humidity monitor 12 is combined, the first electric valve 4 is opened to heat by adopting the two-stage compression screw heat pump unit 1 as a heat source, meanwhile, the first heat meter 9 is used for carrying out real-time temperature and flow and feeding back the real-time temperature and flow to the cloud control platform 6, when the temperature and flow of the branch are changed at night or when the environment temperature is poor, the cloud control platform 6 is used for opening the middle-deep geothermal circulating pump 7 and the second electric valve 5, opening the middle-deep geothermal circulating pump 8 to heat, and according to the condition that the flow of the branch is monitored by the second heat meter 10 and the third heat meter 11, when the system gradually tends to be stable, the cloud control platform 6 reduces the operation number of the two-stage compression screw heat pump unit 1 by closing part of the first electric valve 4, and improves the operation efficiency of the system;
2) The system is controlled by a cloud control platform in a heating season extremely cold period, a second electric valve 5 and a middle-deep geothermal circulating pump 8 are opened in combination with an outdoor environment temperature and humidity monitoring instrument, a middle-deep geothermal system is started, the middle-deep geothermal circulating system is used as a stable heat source of a heating system for heating, and then the operation condition of the two-stage compression screw unit 1 is adjusted according to monitoring and operation judgment results of the cloud control platform 6.
Compared with the prior art, the utility model has the following beneficial effects compared with the prior art:
the intelligent heat supply system is more reasonable in structural design, and the intelligent heat supply system is efficient, stable and easy to adjust by reasonably utilizing the cooperation of the underground heat exchange 2 in the middle and deep layers, the two-stage compression screw heat pump unit 1 and the intelligent system technology, so that the operation efficiency of the heat supply system can be effectively improved, the operation cost is reduced, the problems that a host machine is greatly influenced by the environment, the system operation cop is low and frosting exists in extremely cold weather are solved, and the practicability of the system is ensured.
Claims (7)
1. A heating system based on medium-deep underground heat exchange and two-stage compression screw heat pump is characterized in that: the system comprises a double-stage compression screw heat pump unit (1), a middle-deep geothermal heat exchange (2), a ground source heat pump host (3), a first electric valve (4), a second electric valve (5), a cloud control platform (6), a middle-deep geothermal circulating pump (7), a heat supply circulating pump (8), a first heat meter (9), a second heat meter (10), a third heat meter (11), a temperature and humidity monitor (12), a heat user (13), a water outlet pipeline (14) and a water return pipeline (15);
the input end of the two-stage compression screw heat pump unit (1) is fixedly connected with a first water return branch pipe, one side of the first water return branch pipe is fixedly connected with one side of a water return pipeline (15), the output end of the two-stage compression screw heat pump unit (1) is fixedly connected with a first water outlet branch pipe, one side of the first water outlet branch pipe is fixedly connected with one side of a water outlet pipeline (14), and one sides of the water outlet pipeline (14) and the water return pipeline (15) are fixedly connected with one side of a heat user (13);
one side of the water outlet pipeline (14) is fixedly connected with a second water outlet branch pipe, one side of the second water outlet branch pipe is fixedly connected with one side of a ground source heat pump host (3), one side of the ground source heat pump host (3) is fixedly connected with a third water outlet branch pipe, one side of the third water outlet branch pipe is fixedly connected with an output end of a middle-deep geothermal heat exchange (2) in the pit, one side of the water return pipeline (15) is fixedly connected with a second water return branch pipe, one side of the second water return branch pipe is fixedly connected with one side of the ground source heat pump host (3), one side of the ground source heat pump host (3) is fixedly connected with a third water return branch pipe, and one side of the third water return branch pipe is fixedly connected with an input end of the middle-deep geothermal heat exchange (2) in the pit;
the solar energy heat supply system comprises a first electric valve (4), a second electric valve (5), a middle-deep geothermal circulating pump (7) and a heat supply circulating pump (8), wherein a first heat meter (9), a second heat meter (10), a third heat meter (11) and a temperature and humidity monitor (12) are all connected with a cloud control platform (6) through wires.
2. The heating system based on the medium-deep underground heat exchange and the two-stage compression screw heat pump according to claim 1, wherein the heating system is characterized in that: the two-stage compression screw heat pump units (1) are connected in parallel.
3. The heating system based on the medium-deep underground heat exchange and the two-stage compression screw heat pump according to claim 2, wherein the heating system is characterized in that: the underground heat exchange (2) of the middle-deep geothermal well adopts a coaxial sleeve heat exchanger.
4. A heating system based on a mid-deep downhole heat exchange and dual-stage compression screw heat pump as claimed in claim 3, wherein: the number of the first electric valves (4) is the same as that of the two-stage compression screw heat pump units (1), and the first electric valves (4) are arranged in the middle of the corresponding first water outlet branch pipes.
5. The heating system based on the medium-deep underground heat exchange and the two-stage compression screw heat pump according to claim 4, wherein the heating system is characterized in that: the second electric valve (5) and the second heat meter (10) are both arranged in the middle of the second water outlet branch pipe, and the middle-deep geothermal circulating pump (7) and the third heat meter (11) are both arranged in the middle of the third water outlet branch pipe.
6. The heating system based on the medium-deep underground heat exchange and the two-stage compression screw heat pump according to claim 5, wherein the heating system is characterized in that: the heat supply circulating pump (8) and the first heat meter (9) are both arranged in the middle of the water outlet pipeline (14).
7. The heating system based on the medium-deep underground heat exchange and the two-stage compression screw heat pump according to claim 6, wherein the heating system is characterized in that: the heat supply circulating pump (8) and the first calorimeter (9) are positioned at two sides of the second water outlet branch pipe, and the heat supply circulating pump (8) is positioned between the second water outlet branch pipe and the heat user (13).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223528451.1U CN219264399U (en) | 2022-12-23 | 2022-12-23 | Heating system based on medium-deep underground heat exchange and two-stage compression screw heat pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223528451.1U CN219264399U (en) | 2022-12-23 | 2022-12-23 | Heating system based on medium-deep underground heat exchange and two-stage compression screw heat pump |
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| CN219264399U true CN219264399U (en) | 2023-06-27 |
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| CN202223528451.1U Active CN219264399U (en) | 2022-12-23 | 2022-12-23 | Heating system based on medium-deep underground heat exchange and two-stage compression screw heat pump |
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| CN (1) | CN219264399U (en) |
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