CN116505637B - Energy supply and energy storage system of photovoltaic direct-driven ground source heat pump - Google Patents
Energy supply and energy storage system of photovoltaic direct-driven ground source heat pump Download PDFInfo
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- CN116505637B CN116505637B CN202310759868.9A CN202310759868A CN116505637B CN 116505637 B CN116505637 B CN 116505637B CN 202310759868 A CN202310759868 A CN 202310759868A CN 116505637 B CN116505637 B CN 116505637B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 72
- 239000012535 impurity Substances 0.000 claims description 44
- 238000003825 pressing Methods 0.000 claims description 39
- 238000007790 scraping Methods 0.000 claims description 24
- 230000007246 mechanism Effects 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910021389 graphene Inorganic materials 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010248 power generation Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 abstract description 5
- 239000002689 soil Substances 0.000 description 11
- 230000009286 beneficial effect Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/38—Energy storage means, e.g. batteries, structurally associated with PV modules
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Other Air-Conditioning Systems (AREA)
- Photovoltaic Devices (AREA)
Abstract
The application provides a photovoltaic direct-driven ground source heat pump energy supply and storage system, which relates to the field of ground source heat pumps and comprises a photovoltaic assembly and an energy storage battery, wherein the photovoltaic assembly is electrically connected with a power electronic converter, the power electronic converter is electrically connected with a frequency converter, the frequency converter is connected with a ground source heat pump unit, the ground source heat pump unit is provided with a water outlet pipe and a water inlet pipe, the water outlet pipe is communicated with the water inlet pipe through a buried heat exchange pipe, the ground source heat pump unit, the water outlet pipe, the buried heat exchange pipe and the water inlet pipe are connected into a circulating closed loop, and the energy storage battery is respectively electrically connected with the power electronic converter and the frequency converter through an energy storage bidirectional converter. According to the application, the ground source heat pump unit is powered by the photovoltaic assembly to generate electricity, so that the use of commercial power is reduced, the energy-saving effect is achieved, the surplus electric quantity generated by the photovoltaic assembly is stored by the energy storage battery, and the energy storage battery supplies power to the ground source heat pump unit preferentially at night, so that the light discarding phenomenon is reduced, the utilization rate of the photovoltaic power generation is improved, and the efficient utilization of solar energy is realized.
Description
Technical Field
The application relates to the technical field of ground source heat pumps, in particular to a photovoltaic direct-driven ground source heat pump energy supply and energy storage system.
Background
Heating and air conditioning of public buildings and houses has now become a popular requirement with the development of economies and the improvement of the living standard of people. The coal-fired boiler used for heating in China is low in energy utilization rate and can cause serious pollution to the atmosphere, so that the coal-fired boiler is phased out in some cities, and the fuel-fired and gas-fired boilers are high in running cost. The ground source heat pump is an alternative way for solving the heat supply and air conditioning with great technical and economical advantages. The ground source heat pump is a high-efficiency energy-saving environment-friendly air conditioning system which utilizes underground shallow geothermal resources to supply heat and refrigerate. The ground source heat pump can realize the transfer of energy from a low-temperature heat source to a high-temperature heat source by inputting a small amount of high-grade energy (electric energy). In winter, the heat in the soil is 'taken out', and after the temperature is increased, the soil is supplied to the room for heating; in summer, the indoor heat is "taken out" and released into the soil, and the underground temperature can be balanced throughout the year. The ground source heat pump has the advantages of high efficiency, energy saving, stability, reliability, no environmental pollution, multiple purposes, low maintenance cost, long service life and the like.
The prior ground source heat pump is generally powered by a municipal power grid, and no pollution emission is caused to the surrounding environment because of no combustion process, for example, the application with the authorized bulletin number of CN104315629B discloses a ground buried pipe ground source heat pump system and a method for assisting in cold/heat accumulation by using valley electricity, a ground buried pipe heat exchanger and a ground source heat pump unit form a cold/heat source side loop I, an evaporator of the ground source heat pump unit and a primary side of the heat exchanger I form a heat exchange loop II, and a secondary side of the heat exchanger I and a user form a loop III; the evaporator and the energy storage water tank of the ground source heat pump unit form a cold accumulation loop IV; the primary sides of the energy storage water tank and the heat exchanger II form a cooling/heat release loop V; the secondary side of the heat exchanger II and the user form a loop VI; the electric heating device and the energy storage water tank form a heat source side loop VII; the condenser of the ground source heat pump unit and the ground heating pipeline form a user side loop VIII. The system fully utilizes shallow geothermal energy, valley electricity and electric energy storage technology to realize the most economical air conditioner operation mode. The technology solves the problem of unbalanced cold and heat of the underground rock-soil body of the northern residential project, and can be used as a remedial measure of a single-heating ground source heat pump project.
Although the ground source heat pump system can fully utilize shallow geothermal energy, valley electricity and electricity energy storage technology to realize a more economical air conditioner operation mode, the ground source heat pump is powered by mains supply, and still needs to consume a large amount of mains supply electric energy after long-term work, so that the energy-saving effect cannot be achieved.
Disclosure of Invention
The application provides a photovoltaic direct-driven ground source heat pump energy supply and storage system, which is used for solving the technical problems that a large amount of commercial power energy still needs to be consumed in long-term operation of the conventional ground source heat pump, and energy conservation is not facilitated.
In order to solve the technical problems, the application discloses a photovoltaic direct-driven ground source heat pump energy supply and energy storage system, which comprises: the energy storage battery is electrically connected with the power electronic converter through the energy storage bidirectional converter.
Preferably, the buried heat exchange tube adopts graphene high-heat-conductivity tubes.
Preferably, a heat exchange medium is arranged in the buried heat exchange tube, and the heat exchange medium adopts graphene nanofluid.
Preferably, the buried heat exchange tube is a U-shaped tube, the center of the buried heat exchange tube is provided with a fixed box, and the left side and the right side of the fixed box are respectively fixedly connected with the inner wall of the vertical section of the buried heat exchange tube.
Preferably, the fixed box upper end sets up the opening, and the fixed box is slided and is set up the clamp plate, and the clamp plate below sets up the fixed plate, and fixed plate and fixed box inner wall fixed connection, the bilateral symmetry sets up the depression bar around the clamp plate lower extreme, and the depression bar lower extreme runs through the fixed plate in proper order, and fixed box diapire extends to fixed box below, and the depression bar runs through position sliding connection with fixed plate, fixed box respectively, and the depression bar lower extreme cross-section is isosceles triangle and pointed end setting down.
Preferably, the left side and the right side of the fixed box are respectively provided with a chute, a swinging plate is arranged in the chute in a sliding manner, one end of the swinging plate penetrates through the chute and is hinged to the lower surface of the pressing plate, the other end of the swinging plate extends to the outside of the fixed box, two sides of the pressing rod are symmetrically provided with spring rods, the spring rods are obliquely arranged, one ends of the spring rods are hinged to the upper surface of the fixed plate, and the other ends of the spring rods are hinged to one side, close to the pressing rod, of the swinging plate.
Preferably, the inlet tube adopts square tube, and the inside edulcoration net that sets up of the vertical section of inlet tube still sets up automatic striking off the subassembly of inlet tube, and automatic striking off the subassembly and be used for striking off edulcoration net lower surface accumulational impurity, automatic striking off the subassembly and include: the scraper blade, the scraper blade sets up at edulcoration net lower surface, scraper blade upper surface and edulcoration net lower surface sliding connection, the inlet tube both sides set up first side pipe and second side pipe respectively, first side pipe one end is passed through first connecting hole and inlet tube intercommunication, first side pipe other end sets up first blind end, first side pipe upper end inner wall slip sets up the baffle, baffle one end is connected with the scraper blade lateral wall, second side pipe one end is passed through second connecting hole and inlet tube intercommunication, the second side pipe other end sets up the second blind end, first connecting hole and the concentric setting of second connecting hole, the intraductal actuating mechanism that sets up of second side is used for driving the scraper blade and follows edulcoration net lower surface slip, second side pipe is kept away from inlet tube one end lower surface and is set up the drain, drain department sets up the drain.
Preferably, the drive mechanism includes: sealing plate and a plurality of fixed block, fixed block and second side's pipe inner wall connection, fixed block keep away from scraper blade one side and set up the sealing rod, sealing rod length is less than second side's pipe length, the sealing plate sets up in second side's pipe, sealing plate and second side's pipe inner wall sealing sliding connection, set up a plurality of sealing holes on the sealing plate, sealing hole and sealing rod one-to-one, sealing hole inner wall and sealing rod outer wall sliding connection, set up the connecting rod between sealing plate and the scraper blade, connecting rod one end is connected with the sealing plate lateral wall, the connecting rod other end is connected with scraper blade keep away from baffle one side, connecting rod one side is kept away from to the sealing plate sets up reset spring, reset spring one end is connected with the sealing plate lateral wall, the reset spring other end is connected with second blind end inner wall.
Preferably, a plurality of through holes are formed in the scraping plate, and the left end and the right end of each through hole penetrate through the left side wall and the right side wall of the scraping plate respectively.
Preferably, one end of the sealing rod, which is far away from the fixed block, is arranged in a conical shape, and one end of the sealing hole, which is close to the fixed block, is provided with a chamfer.
The technical scheme of the application has the following advantages: the application provides a photovoltaic direct-driven ground source heat pump energy supply and storage system, which relates to the field of ground source heat pumps and comprises a photovoltaic assembly and an energy storage battery, wherein the photovoltaic assembly is electrically connected with a power electronic converter, the power electronic converter is electrically connected with a frequency converter, the frequency converter is connected with a ground source heat pump unit, the ground source heat pump unit is provided with a water outlet pipe and a water inlet pipe, the water outlet pipe is communicated with the water inlet pipe through a buried heat exchange pipe, the ground source heat pump unit, the water outlet pipe, the buried heat exchange pipe and the water inlet pipe are connected into a circulating closed loop, and the energy storage battery is respectively electrically connected with the power electronic converter and the frequency converter through an energy storage bidirectional converter. In the application, the power is generated by the photovoltaic component to supply power to the ground source heat pump unit, so that the use of commercial power is reduced, the energy saving effect is achieved, the redundant electric quantity generated by the photovoltaic component is stored by the energy storage battery, the energy storage battery supplies power to the ground source heat pump unit preferentially at night, the utilization rate of the photovoltaic power generation is improved, the light discarding phenomenon is reduced, the high-efficiency utilization of renewable energy sources is realized, the system combines the energy storage by the photovoltaic power generation and the self-use, and the low-carbon emission and the power assisting double-carbon target are realized.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objects and other advantages of the application may be realized and attained by means of the instrumentalities particularly pointed out in the written description and the appended drawings.
The technical scheme of the application is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate the application and together with the embodiments of the application, serve to explain the application. In the drawings:
FIG. 1 is a schematic diagram of a photovoltaic direct-driven ground source heat pump energy supply and storage system;
FIG. 2 is a schematic diagram of the connection of a ground source heat pump unit in the present application;
FIG. 3 is a schematic view showing a contracted state of the swing plate according to the present application;
FIG. 4 is a schematic view showing an opened state of the swing plate according to the present application;
FIG. 5 is a schematic view of an automatic doctoring assembly according to the present application;
FIG. 6 is an enlarged view of the structure of FIG. 5A in accordance with the present application;
FIG. 7 is a schematic diagram of a driving mechanism according to the present application;
fig. 8 is an enlarged view of the structure of fig. 7B in accordance with the present application.
In the figure: 1. a photovoltaic module; 2. an energy storage battery; 3. a power electronic converter; 4. a frequency converter; 5. a ground source heat pump unit; 6. a water outlet pipe; 7. a water inlet pipe; 8. buried heat exchange tubes; 9. an energy storage bidirectional converter; 10. a fixed box; 11. a pressing plate; 12. a fixing plate; 13. a compression bar; 14. a chute; 15. a swinging plate; 16. a spring rod; 17. a impurity removing net; 18. a scraper; 19. a first square tube; 20. a second square tube; 21. a baffle; 22. a sewage outlet; 23. a blow-down pipe; 24. a sealing plate; 25. a fixed block; 26. a sealing rod; 27. sealing the hole; 28. a connecting rod; 29. and a return spring.
Detailed Description
The preferred embodiments of the present application will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present application only, and are not intended to limit the present application.
In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the application solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, technical solutions and technical features between the embodiments may be combined with each other, but it is necessary to base that a person skilled in the art can implement the combination of technical solutions, when the combination of technical solutions contradicts or cannot be implemented, should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.
Example 1:
the embodiment of the application provides a photovoltaic direct-driven ground source heat pump energy supply and storage system, as shown in fig. 1, comprising: the photovoltaic module 1 and the energy storage battery 2, the photovoltaic module 1 is electrically connected with the power electronic converter 3, the power electronic converter 3 is electrically connected with the frequency converter 4, the frequency converter 4 is connected with the ground source heat pump unit 5, the ground source heat pump unit 5 is provided with the water outlet pipe 6 and the water inlet pipe 7, the water outlet pipe 6 is communicated with the water inlet pipe 7 through the buried heat exchange pipe 8, the ground source heat pump unit 5, the water outlet pipe 6, the buried heat exchange pipe 8 and the water inlet pipe 7 are connected into a circulating closed loop, and the energy storage battery 2 is electrically connected with the power electronic converter 3 and the frequency converter 4 respectively through the energy storage bidirectional converter 9.
The working principle and the beneficial effects of the technical scheme are as follows: the energy supply and energy storage system comprises a photovoltaic module 1, wherein the photovoltaic module 1 converts solar energy into electric energy through a solar photovoltaic panel, the electric energy is transmitted to an energy storage bidirectional converter 9 and a frequency converter 4 after passing through a power electronic converter 3, then the electric energy is stored in an energy storage battery 2 through the energy storage bidirectional converter 9, and the electric energy is supplied to a ground source heat pump unit 5 through the frequency converter 4, wherein the power electronic converter 3 selects a direct electric box of a direct current distribution technology limited company in Nanjing state, so that direct current generated by the photovoltaic module 1 does not need inversion and can be directly supplied to the ground source heat pump unit 5 for use, the system adopts a direct current distribution area micro-grid regulation technology, the direct current generated by new energy generation is preferentially absorbed, the energy conversion level is reduced, the circuit loss is reduced, the high-efficiency absorption is realized, the power utilization rate of the power generation of the photovoltaic module 1 is improved, the power generation of the ground source heat pump unit 5 is supplied through the photovoltaic module 1, the utility power is reduced, the energy-saving effect is achieved, each power consumption component of the ground source heat pump unit 5 in the system adopts the technology of boosting the voltage of a photovoltaic direct current power supply to supply power, inversion is not needed, the main power consumption component compressor adopts the technology of a direct current variable frequency compressor, the throttling part adopts the technology of dynamic flow regulation of a main and auxiliary electronic expansion valve, the indoor use of an EC direct current brushless motor is realized to realize mute operation, the comprehensive core technologies enable the annual comprehensive performance coefficient of the unit to reach 4.65 and be higher than the standard of the primary energy efficiency 4.2, the surplus electric quantity generated by the photovoltaic module 1 is stored by the energy storage battery 2, the energy storage battery 2 supplies power to the ground source heat pump unit 5 preferentially at night, the utilization rate of photovoltaic power generation is improved, the system reduces the light rejection phenomenon, the high-efficiency utilization of renewable energy sources is realized, in the system, the frequency converter 4 can also be connected with a municipal power grid, when the energy storage battery 2 is in power shortage at night, a municipal power grid can be switched to supply power for the ground source heat pump unit 5, the stable operation of the ground source heat pump unit 5 is guaranteed, the ground source heat pump unit 5, the water outlet pipe 6, the buried heat exchange pipe 8 and the water inlet pipe 7 are connected into a circulating closed loop, fluid circulates in the closed loop to realize efficient heat exchange, underground heat is absorbed through the buried heat exchange pipe 8 in winter, the underground heat is discharged through the buried heat exchange pipe 8 in summer, the ground source heat pump unit 5 is used for heating in winter and refrigerating in summer through the indoor unit, the system is used for storing energy by combining the power generation of the photovoltaic module 1 with the energy storage battery 2, self-use is realized, low carbon emission is realized, and the power assisting double-carbon target is realized.
Example 2
On the basis of the above embodiment 1, the buried heat exchange tube 8 is a graphene high heat conduction tube.
The working principle and the beneficial effects of the technical scheme are as follows: the graphene PE pipe is adopted as the underground heat exchange pipe 8 in the system, so that the heat conductivity of the underground heat exchange pipe 8 is greatly improved, the heat conductivity of the pipe reaches 0.65W/(m.K), the heat conductivity of the pipe is improved, the stable and efficient heat transfer between a soil source and the underground heat exchange pipe 8 is fully ensured, the heat conductivity is improved, the rapid refrigeration or heating of the ground source heat pump unit 5 is facilitated, and the system energy efficiency of the ground source heat pump unit 5 is improved.
Example 3
On the basis of embodiment 1 or 2, a heat exchange medium is arranged in the buried heat exchange tube 8, and the heat exchange medium adopts graphene nanofluid.
The working principle and the beneficial effects of the technical scheme are as follows: in the system, the heat exchange medium in the buried heat exchange tube 8 adopts graphene nano fluid, the graphene nano fluid can enable the heat conductivity coefficient of the heat exchange medium to reach 0.71W/(m.K), compared with the traditional water serving as the heat exchange medium, the heat conductivity is improved, the power of a circulating pump is reduced by about 15%, the rapid heat transfer between the buried heat exchange tube 8 and the heat exchange medium can be realized, and the system energy efficiency of the ground source heat pump unit 5 is further improved.
Example 4
On the basis of any one of the embodiments 1 to 3, as shown in fig. 2 to 4, the buried heat exchange tube 8 is a U-shaped tube, a fixing box 10 is arranged in the center of the buried heat exchange tube 8, and the left and right sides of the fixing box 10 are fixedly connected with the inner wall of the vertical section of the buried heat exchange tube 8 respectively.
The working principle and the beneficial effects of the technical scheme are as follows: the buried heat exchange tube 8 adopts a U-shaped tube, one end of the buried heat exchange tube 8 is communicated with the water outlet tube 6, the other end of the buried heat exchange tube is communicated with the water inlet tube 7, heat exchange medium can flow out of the ground source heat pump unit 5 from the water outlet tube 6, after flowing through the buried heat exchange tube 8, the heat exchange medium flows back into the ground source heat pump unit 5 through the water inlet tube 7, the center of the buried heat exchange tube 8 is provided with the fixing box 10, the fixing box 10 is fixedly connected with the inner wall of the vertical section of the buried heat exchange tube 8, deformation and position deviation of the vertical section of the buried heat exchange tube 8 in the ground are avoided, the stability of the buried heat exchange tube 8 is improved, the service life of the buried heat exchange tube 8 is prolonged, the heat conduction area can be increased through the fixing box 10, and therefore the heat exchange efficiency is improved.
Example 5
On the basis of embodiment 4, as shown in fig. 3 and 4, an opening is formed at the upper end of the fixed box 10, a pressing plate 11 is slidably arranged in the fixed box 10, a fixed plate 12 is arranged below the pressing plate 11, the fixed plate 12 is fixedly connected with the inner wall of the fixed box 10, pressing rods 13 are symmetrically arranged on the front side and the rear side of the lower end of the pressing plate 11, the lower end of each pressing rod 13 sequentially penetrates through the fixed plate 12 and the bottom wall of the fixed box 10 to extend to the lower side of the fixed box 10, the pressing rods 13 are respectively connected with the penetrating positions of the fixed plate 12 and the fixed box 10 in a sliding manner, and the section of the lower end of each pressing rod 13 is isosceles triangle with the tip facing downwards.
The working principle and the beneficial effects of the technical scheme are as follows: the front side of the fixed box 10 exceeds the front side of the buried heat exchange tube 8, the rear side of the fixed box 10 exceeds the rear side of the buried heat exchange tube 8, the pressing plate 11 is arranged in the fixed box 10 in a sliding manner, the fixing plate 12 is arranged below the pressing plate 11, the fixing plate 12 can enable the connection of the left side and the right side of the fixed box 10 to be more stable, the stability of the buried heat exchange tube 8 under the ground is further improved, the front end and the rear end of the lower surface of the pressing plate 11 are respectively provided with the pressing rods 13, the lower ends of the pressing rods 13 penetrate through the fixing plate 12 and the bottom wall of the fixed box 10 to extend to the lower side of the fixed box 10, when the buried heat exchange tube 8 is installed, the installation holes are firstly formed in the ground, the installation holes are used for placing the buried heat exchange tube 8, after the placement is finished, soil is filled above the pressing plate 11, the pressing plate 11 slides downwards in the fixed box 10 under the action of gravity, the pressing plate 11 drives the pressing rods 13 to move downwards, the lower ends of the pressing rods 13 are bound to be lower, then all the soil is bound into the ground, the ground below the buried heat exchange tube 8 is bound through the pressing rods 13, the ground, the buried heat exchange tube 8 is prevented from shaking, the ground, the initial buried heat exchange tube 8 is prevented, and the initial heat exchange tube 8 is prevented from shaking, and the stability is improved, and the stability of the subsequent heat exchange tube is installed.
Example 6
On the basis of embodiment 5, as shown in fig. 3 and 4, both the left and right sides of the fixed box 10 are provided with sliding grooves 14, a swinging plate 15 is arranged in the sliding grooves 14 in a sliding manner, one end of the swinging plate 15 passes through the sliding grooves 14 and is hinged with the lower surface of the pressing plate 11, the other end of the swinging plate 15 extends to the outside of the fixed box 10, spring rods 16 are symmetrically arranged on both sides of the pressing rod 13, the spring rods 16 are obliquely arranged, one end of each spring rod 16 is hinged with the upper surface of the fixed plate 12, and the other end of each spring rod 16 is hinged with one side of the swinging plate 15 close to the pressing rod 13.
The working principle and the beneficial effects of the technical scheme are as follows: the swing plates 15 are symmetrically arranged on the left side and the right side of the pressing rod 13, the swing plates 15 are in a contracted state initially, the swing plates 15 are contracted into the sliding grooves 14, in the process of filling soil, the upper surface of the pressing plate 11 is firstly filled with soil, the pressing plate 11 can slide downwards, the pressing plate 11 drives the swing plates 15 to move downwards, under the action of the spring rods 16, one end of the swing plates 15, far away from the pressing plate 11, swings gradually towards the direction far away from the pressing rod 13, after the surface of the pressing plate 11 is filled with soil, the swing plates 15 on the two sides are in an open state, and then fill soil on the two sides of the buried heat exchange tube 8, and as the swing plates 15 on the two sides are open, the contact area of the buried heat exchange tube 8 can be increased, so that the buried heat exchange tube 8 is not prone to sedimentation in the ground, the stability of the buried heat exchange tube 8 is improved, the buried heat exchange tube 8 is prevented from being separated from the water inlet tube 7 and the water outlet tube 6, and the swing plates 15 on the two sides are contacted with the outer wall of the buried heat exchange tube 8, the heat conducting area is further improved, the energy-saving performance of the ground source heat pump unit 5 is further improved, and the volume of the buried heat exchange tube 8 is reduced, and the contact area of the buried heat exchange tube 8 can be conveniently transported in the sliding grooves 14.
Example 7
On the basis of any one of the embodiments 1 to 6, as shown in fig. 5 to 8, the water inlet pipe 7 is a square pipe, the impurity removing net 17 is arranged in the vertical section of the water inlet pipe 7, the automatic scraping component is further arranged in the vertical section of the water inlet pipe 7, the automatic scraping component is used for scraping impurities accumulated on the lower surface of the impurity removing net 17, and the automatic scraping component comprises: the scraper blade 18, the scraper blade 18 sets up at edulcoration net 17 lower surface, scraper blade 18 upper surface and edulcoration net 17 lower surface sliding connection, inlet tube 7 both sides set up first side pipe 19 respectively and second side pipe 20, first side pipe 19 one end is through first connecting hole and inlet tube 7 intercommunication, the first closed end of first side pipe 19 other end setting, first side pipe 19 upper end inner wall slip sets up baffle 21, baffle 21 one end is connected with scraper blade 18 lateral wall, second side pipe 20 one end is through second connecting hole and inlet tube 7 intercommunication, the second side pipe 20 other end sets up the second closed end, first connecting hole and the concentric setting of second connecting hole, set up actuating mechanism in the second side pipe 20, actuating mechanism is used for driving scraper blade 18 to slide along edulcoration net 17 lower surface, second side pipe 20 keeps away from inlet tube 7 one end lower surface and sets up drain 22, drain 22 department sets up drain 23.
The working principle and the beneficial effects of the technical scheme are as follows: the water inlet pipe 7 adopts square pipes, the vertical section of the water inlet pipe 7 is communicated with the output end of the buried heat exchange pipe 8, and along with the reciprocating circulation flow of heat exchange medium among the ground source heat pump unit 5, the water outlet pipe 6, the buried heat exchange pipe 8 and the water inlet pipe 7, loss can be caused to the inner wall of the pipeline, and the heat conduction performance of the heat exchange medium can be reduced when the impurities are carried in the transmission process, therefore, the impurity removal net 17 is arranged on the vertical section of the water inlet pipe 7, when the heat exchange medium passes through the impurity removal net 17, the impurity removal net 17 can block the impurities in the heat exchange medium, thereby reducing the impurities flowing into the ground source heat pump unit 5 and the heat exchange medium flowing in the buried heat exchange pipe 8, improving the purity of the heat exchange medium, ensuring the high heat conductivity of the heat exchange medium, and in order to avoid the blockage of the impurity removal net 17, the automatic scraping component is also arranged on the vertical section of the water inlet pipe 7, and the impurity removal net 17 and the automatic scraping component can also be arranged in the vertical section of the water outlet pipe 6, the impurity removing net 17 and the automatic scraping component in the water outlet pipe 6 and the impurity removing net 17 and the automatic scraping component in the water inlet pipe 7 are distributed in an annular array with respect to the center of the buried heat exchange pipe 8, in the application, the impurity removing net 17 and the automatic scraping component in the water inlet pipe 7 are taken as examples, along with the increase of the impurity blocking of the impurity removing net 17, the pressure of a heat exchange medium below the impurity removing net 17 is increased, at the moment, the driving mechanism can drive the scraping plate 18 to slide along the lower surface of the impurity removing net 17 so as to scrape the impurity into the second square pipe 20 and discharge the impurity from the blow-off pipe 23, the heat exchange medium can be ensured to smoothly pass through the impurity removing net 17, the flow rate of the heat exchange medium is not reduced, the heat exchange efficiency is improved, the system energy efficiency of the ground source heat pump unit 5 is improved, the energy efficiency of the ground source heat pump unit 5 is better, the starting duration of the ground source heat pump unit 5 can be reduced under the same power supply quantity, thereby achieving the effect of energy saving.
Example 8
On the basis of embodiment 7, as shown in fig. 5 to 8, the driving mechanism includes: the sealing plate 24 and a plurality of fixed blocks 25, fixed blocks 25 and second side's pipe 20 inner wall connection, fixed blocks 25 are kept away from scraper blade 18 one side and are set up sealing rod 26, sealing rod 26 length is less than second side's pipe 20 length, sealing plate 24 sets up in second side's pipe 20, sealing plate 24 and the sealed sliding connection of second side's pipe 20 inner wall, set up a plurality of sealing holes 27 on the sealing plate 24, sealing hole 27 and sealing rod 26 one-to-one, sealing hole 27 inner wall and sealing rod 26 outer wall sliding connection, set up connecting rod 28 between sealing plate 24 and the scraper blade 18, connecting rod 28 one end is connected with sealing plate 24 lateral wall, the connecting rod 28 other end is connected with scraper blade 18 one side of keeping away from baffle 21, sealing plate 24 is kept away from connecting rod 28 one side and is set up reset spring 29, reset spring 29 one end is connected with sealing plate 24 lateral wall, the other end and the second blind end inner wall connection of reset spring 29.
The working principle and the beneficial effects of the technical scheme are as follows: when the pressure of the heat exchange medium below the impurity removing net 17 is gradually increased, the heat exchange medium can push the sealing plate 24 to slide along the second square tube 20 in the direction away from the impurity removing net 17, the reset spring 29 compresses, the sealing plate 24 drives the scraping plate 18 to slide along the lower surface of the impurity removing net 17 in the direction away from the first square tube 19 through the connecting rod 28, the scraping plate 18 drives the baffle 21 to slide, so that the impurity removing net 17 is shielded, at the moment, the pressure of the heat exchange medium below the impurity removing net 17 is further increased, the heat exchange medium passing through the impurity removing net 17 is gradually reduced along with the increase of the shielding area, the heat exchange medium further pushes the sealing plate 24 to slide in the direction away from the impurity removing net 17, the sealing rod 26 provides a guide for the sliding of the sealing plate 24, when the sealing plate 24 slides to the sealing hole 27 and the sealing rod 26 are separated, the heat exchange medium carrying impurities can flow out to the position of the drain outlet 22 through the sealing hole 27 and is discharged from the drain pipe 23, thereby removing a large amount of impurities in the heat exchange medium, improving the purity of the heat exchange medium, ensuring the heat conduction performance of the heat exchange medium, reducing the pressure of the heat exchange medium below the impurity removal net 17 relatively along with the outflow of the heat exchange medium, enabling the sealing holes 27 to be in contact with the density rods under the action of the elastic force of the return spring 29, enabling the sealing plate 24 to slide towards the direction close to the impurity removal net 17 under the action of the return spring 29, pushing the scraping plate 18 and the baffle plate 21 to slide towards the direction far away from the second square tube 20 through the connecting rod 28, gradually reducing the shielding area of the baffle plate 21 to the impurity removal net 17, enabling a large amount of heat exchange medium to smoothly pass through the impurity removal net 17 with the impurities scraped off, reducing the pressure of the heat exchange medium to the sealing plate 24 until the return spring 29 is restored to the original position, enabling the baffle plate 21 to be positioned in the first square tube 19 and automatically driving the scraping plate 18 to slide along the lower surface of the impurity removal net 17 through the driving mechanism, the degree of automation of the automatic scraping assembly is improved, impurities blocked on the lower surface of the impurity removal net 17 are scraped through the scraping plate 18, the passing performance of a heat exchange medium is guaranteed, the heat exchange efficiency is improved, and the driving mechanism does not need extra electric energy driving and has the advantage of energy conservation.
Example 9
On the basis of embodiment 7 or 8, a plurality of through holes are provided in the scraper 18, and the left and right ends of the through holes penetrate through the left and right side walls of the scraper 18, respectively.
The working principle and the beneficial effects of the technical scheme are as follows: the through holes in the scraper 18 facilitate the passage of heat exchange medium, reduce the sliding resistance of the scraper 18, and facilitate the scraper 18 to slide along the lower surface of the impurity removal net 17.
Example 10
On the basis of any one of embodiments 7 to 9, as shown in fig. 8, the end of the sealing rod 26 remote from the fixed block 25 is tapered, and the end of the sealing hole 27 near the fixed block 25 is chamfered.
The working principle and the beneficial effects of the technical scheme are as follows: the sealing rod 26 is tapered to cooperate with the chamfered edge sealing hole 27 to facilitate alignment of the sealing rod 26 with the sealing hole 27 and accurate insertion into the sealing hole 27.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. Photovoltaic direct-driven ground source heat pump energy supply energy storage system, its characterized in that includes: the photovoltaic module (1) and the energy storage battery (2), the photovoltaic module (1) is electrically connected with the power electronic converter (3), the power electronic converter (3) is electrically connected with the frequency converter (4), the frequency converter (4) is connected with the ground source heat pump unit (5), the ground source heat pump unit (5) is provided with a water outlet pipe (6) and a water inlet pipe (7), the water outlet pipe (6) is communicated with the water inlet pipe (7) through a buried heat exchange pipe (8), the ground source heat pump unit (5), the water outlet pipe (6), the buried heat exchange pipe (8) and the water inlet pipe (7) are connected into a circulating closed loop, and the energy storage battery (2) is electrically connected with the power electronic converter (3) and the frequency converter (4) through an energy storage bidirectional converter (9) respectively;
the buried heat exchange tube (8) is a U-shaped tube, a fixed box (10) is arranged at the center of the buried heat exchange tube (8), and the left side and the right side of the fixed box (10) are fixedly connected with the inner wall of the vertical section of the buried heat exchange tube (8) respectively;
the upper end of the fixed box (10) is provided with an opening, the fixed box (10) is internally provided with a pressing plate (11) in a sliding manner, a fixed plate (12) is arranged below the pressing plate (11), the fixed plate (12) is fixedly connected with the inner wall of the fixed box (10), the front side and the rear side of the lower end of the pressing plate (11) are symmetrically provided with pressing rods (13), the lower ends of the pressing rods (13) sequentially penetrate through the fixed plate (12) and the bottom wall of the fixed box (10) to extend to the lower side of the fixed box (10), the pressing rods (13) are respectively connected with the penetrating positions of the fixed plate (12) and the fixed box (10) in a sliding manner, and the section of the lower end of each pressing rod (13) is isosceles triangle with the tip downwards arranged;
the fixed box (10) both sides all set up spout (14), spout (14) are slided and are set up swing board (15), spout (14) are passed to swing board (15) one end and are connected with clamp plate (11) lower surface hinge, swing board (15) other end extends to fixed box (10) outside, depression bar (13) bilateral symmetry sets up spring lever (16), spring lever (16) slope sets up, spring lever (16) one end is connected with fixed plate (12) upper surface hinge, spring lever (16) other end is connected with swing board (15) hinge near depression bar (13) one side, the in-process of filling earth is filled to clamp plate (11) earlier, after clamp plate (11) surface fill earth finishes, fill earth to buries heat exchange tube (8) both sides again.
2. The photovoltaic direct-driven ground source heat pump energy supply and storage system according to claim 1, wherein the buried heat exchange tube (8) is a graphene high-heat-conductivity tube.
3. The energy storage system of the photovoltaic direct-driven ground source heat pump is characterized in that a heat exchange medium is arranged in the buried heat exchange tube (8), and the heat exchange medium adopts graphene nanofluid.
4. The energy storage system of the photovoltaic direct-driven ground source heat pump according to claim 1, wherein the water inlet pipe (7) is a square pipe, the impurity removing net (17) is arranged inside the vertical section of the water inlet pipe (7), the automatic scraping component is further arranged on the vertical section of the water inlet pipe (7), the automatic scraping component is used for scraping impurities accumulated on the lower surface of the impurity removing net (17), and the automatic scraping component comprises: scraper blade (18), scraper blade (18) set up in edulcoration net (17) lower surface, scraper blade (18) upper surface and edulcoration net (17) lower surface sliding connection, inlet tube (7) both sides set up first side pipe (19) and second side pipe (20) respectively, first side pipe (19) one end is passed through first connecting hole and is linked together with inlet tube (7), first side pipe (19) other end sets up first blind end, first side pipe (19) upper end inner wall slip sets up baffle (21), baffle (21) one end is connected with scraper blade (18) lateral wall, second side pipe (20) one end is passed through second connecting hole and is linked together with inlet tube (7), the second side pipe (20) other end sets up the second blind end, first connecting hole sets up with the second connecting hole is concentric, set up actuating mechanism in second side pipe (20), actuating mechanism is used for driving scraper blade (18) along edulcoration net (17) lower surface slip, second side pipe (20) are kept away from inlet tube (7) one end lower surface setting up drain (22), drain (22) department sets up drain (23).
5. The photovoltaic direct drive ground source heat pump energy storage system of claim 4 wherein the drive mechanism comprises: sealing plate (24) and a plurality of fixed block (25), fixed block (25) are connected with second side's pipe (20) inner wall, fixed block (25) are kept away from scraper blade (18) one side and are set up sealing rod (26), sealing rod (26) length is less than second side's pipe (20) length, sealing plate (24) set up in second side's pipe (20), sealing plate (24) are sealed sliding connection with second side's pipe (20) inner wall, set up a plurality of sealing holes (27) on sealing plate (24), sealing hole (27) and sealing rod (26) one-to-one, sealing hole (27) inner wall and sealing rod (26) outer wall sliding connection, set up connecting rod (28) between sealing plate (24) and the scraper blade (18), connecting rod (28) one end is connected with sealing plate (24) lateral wall, the baffle (21) one side is kept away from with scraper blade (18) the other end, connecting rod (28) one side is kept away from sealing plate (24) and is set up reset spring (29), reset spring (29) one end is connected with sealing plate (24) lateral wall, the other end and second inner wall connection.
6. The energy storage system of the photovoltaic direct-driven ground source heat pump according to claim 5, wherein a plurality of through holes are formed in the scraping plate (18), and the left end and the right end of each through hole penetrate through the left side wall and the right side wall of the scraping plate (18) respectively.
7. The energy storage system of the photovoltaic direct-driven ground source heat pump according to claim 5, wherein one end of the sealing rod (26) far away from the fixed block (25) is provided with a taper, and one end of the sealing hole (27) near the fixed block (25) is provided with a chamfer.
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