Heat exchanger for comprehensive utilization of solar energy and geothermal energy

Abstract

The utility model relates to heat exchanger technical field, and disclose a kind of heat exchanger for solar energy and geothermal energy comprehensive utilization, including ground, ground lower side is used to collect geothermal geothermal source and ground upper side for collecting solar energy solar heat source, the geothermal source side is provided with heat switching mechanism and ground low heat transfer storage mechanism, the low heat transfer storage mechanism is arranged in heat switching mechanism downside, the heat switching mechanism includes solar heat pipe, the solar heat pipe is communicated with solar heat source arrangement, the geothermal source is communicated with geothermal pipe arrangement, three-way pressure compensator is communicated with between geothermal pipe and solar heat pipe arrangement, geothermal pipe and solar heat pipe side are all communicated with one-way valve arrangement, the heat switching mechanism is used to switch according to heat source recycling heat, improve the utilization of thermal energy, the low heat transfer storage mechanism is used to low heat source is recycled to compensate geothermal source loss, reduce the problem of low heat loss.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically a heat exchanger for the integrated utilization of solar and geothermal energy. Background Technology

[0002] Heat exchangers play a core role in the integrated utilization of solar and geothermal energy. Both are renewable energy sources, but they have very different characteristics: solar energy is intermittent and fluctuates, while geothermal energy can provide stable and continuous base load heat energy.

[0003] In integrated solar and geothermal systems, the common practice is to first collect the two types of heat energy into a common heat storage unit or intermediate loop for unified heat exchange, rather than directly supplying the user with the higher-temperature geothermal energy.

[0004] This centralized heat exchange method has inherent flaws. Essentially, it mixes high-grade geothermal energy with low-grade solar energy, leading to unnecessary devaluation of geothermal energy and waste of energy quality. This process artificially reduces the usable energy of the geothermal system and introduces additional heat losses during mixing and subsequent heat exchange stages, resulting in a decrease in overall system efficiency. It fails to truly achieve the tiered and efficient utilization of energy of different grades, thus diminishing its maximum potential for energy conservation. Utility Model Content

[0005] The purpose of this invention is to provide a heat exchanger for the integrated utilization of solar and geothermal energy, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat exchanger for the comprehensive utilization of solar and geothermal energy, comprising a ground surface, a geothermal source for collecting geothermal energy disposed below the ground surface, and a solar heat source for collecting solar energy disposed above the ground surface, wherein a heat switching mechanism and a low-temperature heat transfer and storage mechanism are disposed on one side of the geothermal source, and the low-temperature heat transfer and storage mechanism is disposed below the heat switching mechanism.

[0007] The heat switching mechanism includes a solar heat pipe connected to a solar heat source and a geothermal heat pipe connected to the geothermal source. A three-way pressure compensator connects the geothermal heat pipe and the solar heat pipe. One-way valves are connected to one side of both the geothermal heat pipe and the solar heat pipe. A pressure regulating pipe connects the heat pipe and the solar heat pipe. Multiple one-way valves are located between the pressure regulating pipe and the three-way pressure compensator. Each one-way valve is unidirectionally connected to the pressure regulating pipe. Multiple positioning rings are fixedly connected inside the pressure regulating pipe. A return spring is fixedly connected to one side of each positioning ring. A sealing block is slidably connected inside the pressure regulating pipe. The sealing block is located in the middle of the pressure regulating pipe. A heat outlet pipe is connected to the middle of the pressure regulating pipe. An exchanger is connected to one side of the heat outlet pipe.

[0008] Preferably, the pressure regulating pipe has a U-shaped cross-section.

[0009] Preferably, the length of the sealing block is greater than the diameter of the heat outlet pipe.

[0010] Preferably, the reset springs are all fitted with the sealing block gap.

[0011] Preferably, the low-heat transfer and storage mechanism includes a stop block, multiple hanging cylinders, and a storage tube. The hanging cylinders are respectively disposed on the lower side of the pressure regulating pipes at both ends of the sealing block. The stop block is fixedly connected to both sides of the sealing block, and the lower surface of the stop block is slidably connected to the inner wall of the pressure regulating pipe. Each hanging cylinder is fixedly connected to a spreading spring, and each spreading spring is fixedly connected to a sliding plate. Each sliding plate is fixedly connected to a top rod on its upper surface, and each top rod has an oblique opening on one side close to each other. Each hanging cylinder is fixedly connected to a switch inside its lower side. The storage tubes are respectively connected to the ends of the solar heat pipe and the geothermal pipe near the pressure regulating pipe. Each storage tube is connected to an electrically controlled valve, and storage chambers are connected between the electrically controlled valves. The storage chambers are connected to an exchanger.

[0012] Preferably, the top rods are all slidably connected to adjacent hanging cylinders.

[0013] Preferably, a sliding limiting structure with groove and block cooperation is provided between the stop block and the inner wall of the pressure regulating pipe, and between the slide plate and the hanging cylinder.

[0014] Compared with the prior art, this utility model provides a heat exchanger for the integrated utilization of solar and geothermal energy, which has the following beneficial effects:

[0015] 1. The heat switching mechanism is used to switch the available recoverable heat according to the heat source. This mechanism compares the internal pressure of the solar heat pipe and the geothermal heat pipe through a three-way pressure compensator and compensates for their pressure difference, keeping them equal at all times. At the same time, the one-way valve guides the flow of the two branches with the same pressure in one direction. Inside the pressure regulating pipe, the temperature difference directly affects the gas pressure value inside the pressure regulating pipe, which adjusts the position of the sealing block. This allows the heat source with a higher temperature to open the heat pipe and provide heat energy to the user, thereby avoiding the problem of heat loss caused by heat mixing and improving the utilization rate of heat energy.

[0016] 2. The low-heat transfer and storage mechanism is used to transfer and store low-heat sources to compensate for geothermal source losses. This mechanism opens the passage on the side with low pressure inside the pressure regulating pipe through a stop, a top rod and a switch, so that low-heat energy can be collected. This allows the low-heat source to compensate for geothermal energy when there is no demand for heat, thus reducing the problem of large low-heat loss. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0020] Figure 3 This is a schematic diagram of a half-section of the present invention;

[0021] Figure 4 This is a schematic diagram of the solar heat pipe in this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the stop block in this utility model.

[0023] In the diagram: 1. Earth's surface; 2. Geothermal source; 3. Solar heat source; 4. Heat switching mechanism; 401. Solar heat pipe; 402. Geothermal pipe; 403. Three-way pressure compensator; 404. One-way valve; 405. Pressure regulating pipe; 406. Positioning ring; 407. Return spring; 408. Sealing block; 409. Heat outlet pipe; 410. Heat exchanger; 5. Low-temperature heat transfer and storage mechanism; 501. Stop block; 502. Hanging cylinder; 503. Spreading spring; 504. Slide plate; 505. Top rod; 506. Slanted opening; 507. Switch; 508. Storage pipe; 509. Electrically controlled valve; 510. Storage chamber. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Example 1:

[0027] Please see Figure 1-5 This utility model provides a technical solution: a heat exchanger for the comprehensive utilization of solar energy and geothermal energy, including a ground surface 1, a geothermal source 2 for collecting geothermal energy disposed on the lower side of the ground surface 1 and a solar heat source 3 for collecting solar energy disposed on the upper side of the ground surface 1, a heat switching mechanism 4 and a low-temperature heat transfer and storage mechanism 5 disposed on one side of the geothermal source 2, and the low-temperature heat transfer and storage mechanism 5 disposed on the lower side of the heat switching mechanism 4.

[0028] This mechanism is used to adjust the heat source supply. It solves the problem of reduced heat source utilization caused by the need for heat source neutralization in traditional devices. The heat switching mechanism 4 includes a solar heat pipe 401, which is connected to the solar heat source 3. A geothermal pipe 402 is connected to the geothermal source 2. A three-way pressure compensator 403 connects the geothermal pipe 402 and the solar heat pipe 401. One-way valves 404 are connected to both sides of the geothermal pipe 402 and the solar heat pipe 401. A pressure regulating pipe 40 is connected between the heat pipe and the solar heat pipe 401. 5. Multiple one-way valves 404 are arranged between the pressure regulating pipe 405 and the three-way pressure compensator 403. Each one-way valve 404 is arranged to unilaterally guide the pressure regulating pipe 405. Multiple positioning rings 406 are fixedly connected inside the pressure regulating pipe 405. A return spring 407 is fixedly connected to the side of each positioning ring 406 that is close to each other. A sealing block 408 is slidably connected inside the pressure regulating pipe 405. The sealing block 408 is arranged in the middle of the pressure regulating pipe 405. A heat outlet pipe 409 is connected to the middle of the pressure regulating pipe 405. An exchanger 410 is connected to one side of the heat outlet pipe 409.

[0029] Furthermore, the pressure regulating pipe 405 has a U-shaped cross-section.

[0030] Furthermore, the length of the sealing block 408 is greater than the diameter of the heat outlet pipe 409.

[0031] Furthermore, the return springs 407 are all in clearance fit with the sealing block 408.

[0032] Example 2:

[0033] This device is used to collect and retain low-heat sources, improving the efficiency of heat recovery. Please refer to [link / reference needed]. Figure 1-5 Furthermore, in conjunction with Embodiment 1, the low-heat transfer and storage mechanism 5 includes a stop block 501, multiple hanging cylinders 502, and a storage tube 508. The hanging cylinders 502 are respectively disposed on the lower side of the pressure regulating tubes 405 at both ends of the sealing block 408. The stop block 501 is fixedly connected to both sides of the sealing block 408, and the lower surface of the stop block 501 is slidably connected to the inner wall of the pressure regulating tube 405. Each hanging cylinder 502 is fixedly connected to a spreading spring 503, and each spreading spring 503 is fixedly connected to a sliding plate 504 at its upper end. Each sliding plate 504 is fixedly connected to a top rod on its upper surface. 505, the top rod 505 is provided with a slanted opening 506 on one side, the hanging cylinder 502 is fixedly connected to the inside of the lower side of the cylinder 502, the storage pipe 508 is respectively connected to the end of the solar heat pipe 401 and the geothermal pipe 402 near the pressure regulating pipe 405, the storage pipe 508 is connected to the inside of the storage pipe 509, the storage chamber 510 is connected between the solenoid valves 509, the storage chamber 510 is connected to the heat exchanger 410, the pump body kinetic energy inside the solar heat pipe 401 and the geothermal pipe 402 is balanced with the gravity of the water.

[0034] Furthermore, the top rod 505 is in a sealed sliding connection with the adjacent hanging cylinder 502.

[0035] Furthermore, a sliding limiting structure with groove and block cooperation is provided between the stop block 501 and the inner wall of the pressure regulating pipe 405, and between the slide plate 504 and the hanging cylinder 502.

[0036] In actual operation, when this device is in use, during the recovery of solar or geothermal energy, heat sources simultaneously flow from the geothermal pipe 402 and the solar heat pipe 401 to their respective ends. During this period, pressure imbalances caused by external factors are compensated by the three-way pressure compensator 403. After the heat sources pass through their corresponding one-way valves 404, their initial conditions are the same, and the internal temperature difference directly affects the air inside the geothermal pipe 402 and the solar heat pipe 401. Heating causes an imbalance in the pressure inside both ends of the pressure regulating pipe 405. The heat source is transferred to the heat exchanger 410 through the heat outlet pipe 409 for user use. After one side of the pressure regulating pipe 405 is sealed, the sealing block 408 slides while the sliding plate 504 presses against the top rod 505 and opens the switch 507, allowing the lower-temperature heat source to enter the storage tank through the electric control valve 509 for backup heat source. This allows the device to mechanically control the heat source to always be supplied to the user, ensuring the heat utilization effect.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A heat exchanger for the integrated utilization of solar and geothermal energy, comprising a land surface (1), a geothermal source (2) for collecting geothermal energy disposed below the land surface (1), and a solar heat source (3) for collecting solar energy disposed above the land surface (1), characterized in that: A heat switching mechanism (4) and a low-temperature heat transfer and storage mechanism (5) are provided on one side of the geothermal source (2), and the low-temperature heat transfer and storage mechanism (5) is located below the heat switching mechanism (4); The heat switching mechanism (4) includes a solar heat pipe (401), which is connected to a solar heat source (3). A geothermal pipe (402) is connected to the geothermal source (2). A three-way pressure compensator (403) is connected between the geothermal pipe (402) and the solar heat pipe (401). A one-way valve (404) is connected to one side of both the geothermal pipe (402) and the solar heat pipe (401). A pressure regulating pipe (405) is connected between the heat pipe and the solar heat pipe (401). Multiple one-way valves (404) are installed between the pressure regulating pipe (405) and the three-way pressure compensator (403). Between the pressure compensators (403), the one-way valves (404) are all unidirectionally connected to the pressure regulating pipe (405). Multiple positioning rings (406) are fixedly connected inside the pressure regulating pipe (405). A return spring (407) is fixedly connected to one side of each positioning ring (406). A sealing block (408) is slidably connected inside the pressure regulating pipe (405). The sealing block (408) is located in the middle of the pressure regulating pipe (405). A heat outlet pipe (409) is connected to the middle of the pressure regulating pipe (405). An exchanger (410) is connected to one side of the heat outlet pipe (409).

2. A heat exchanger for the integrated utilization of solar and geothermal energy according to claim 1, characterized in that: The pressure regulating tube (405) has a U-shaped cross-section.

3. A heat exchanger for the integrated utilization of solar and geothermal energy according to claim 1, characterized in that: The length of the sealing block (408) is greater than the diameter of the heat outlet pipe (409).

4. A heat exchanger for the integrated utilization of solar and geothermal energy according to claim 1, characterized in that: The reset springs (407) are all in clearance fit with the sealing blocks (408).

5. A heat exchanger for the integrated utilization of solar and geothermal energy according to claim 1, characterized in that: The low-heat transfer storage mechanism (5) includes a stop block (501), multiple hanging cylinders (502), and a storage tube (508). The hanging cylinders (502) are respectively disposed on the lower side of the pressure regulating tubes (405) at both ends of the sealing block (408). The stop block (501) is fixedly connected to both sides of the sealing block (408). The lower surface of the stop block (501) is slidably connected to the inner wall of the pressure regulating tube (405). Each hanging cylinder (502) is fixedly connected with a spreading spring (503). Each spreading spring (503) is fixedly connected with a sliding plate (504) at its upper end. The upper surface of the sliding plate (504) is... Each of the surfaces is fixedly connected with a top rod (505), and each of the top rods (505) has a bevel (506) on one side. Each of the hanging cylinders (502) has a switch (507) fixedly connected inside the lower side. Each of the storage tubes (508) is connected to one end of the solar heat pipe (401) and the geothermal pipe (402) near the pressure regulating pipe (405). Each of the storage tubes (508) is connected to an electric control valve (509). Each of the electric control valves (509) is connected to a storage chamber (510). The storage chamber (510) is connected to the exchanger (410).

6. A heat exchanger for the integrated utilization of solar and geothermal energy according to claim 5, characterized in that: The top rod (505) is sealed and slidably connected to the adjacent hanging cylinder (502).

7. A heat exchanger for the integrated utilization of solar and geothermal energy according to claim 5, characterized in that: The stop block (501) and the inner wall of the pressure regulating pipe (405) and the slide plate (504) and the hanging cylinder (502) are all provided with a sliding limit structure that fits the groove and the block.

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