Geothermal heating system integrated device based on plate heat exchanger and two-stage heat pump coupling

Abstract

This utility model relates to an integrated device for a geothermal heating system based on the coupling of plate heat exchangers and a two-stage heat pump, applicable to the field of geothermal heating. The device includes a high-temperature heat pump, a low-temperature heat pump, and multiple sets of plate heat exchangers. Each plate heat exchanger includes two side plates and several plates disposed between the two side plates. Each side plate has a plug-in plate at its front end and a plug-in slot adapted to the plug-in plate at its rear end. A locking mechanism for locking the plug-in plate is provided within the plug-in slot. The multiple sets of plate heat exchangers are arranged front to back, and adjacent plate heat exchangers are connected by the plug-in plate of the rear plate heat exchanger engaging with the plug-in slot of the front plate heat exchanger, with the relative position of the plug-in plate and the plug-in slot locked by the locking mechanism. A first medium connecting pipe connects to the first medium inlet and outlet of each plate heat exchanger, and the first medium connecting pipe connects to the high-temperature heat pump. A second medium connecting pipe connects to the second medium inlet and outlet of each plate heat exchanger, and the second medium connecting pipe connects to the low-temperature heat pump.

Description

Technical Field

[0001] This utility model relates to an integrated device for a geothermal heating system based on the coupling of a plate heat exchanger and a two-stage heat pump. It is applicable to the field of geothermal heating. Background Technology

[0002] Geothermal heating systems refer to heating systems that utilize geothermal energy as the primary heat source. Geothermal energy is an energy source inherent in the Earth itself and is considered a renewable energy source. Geothermal heating systems can be categorized into direct heating and indirect heating based on how the geothermal flow enters the system. Direct heating involves directly introducing the geothermal flow into the heating system, while indirect heating involves the geothermal flow transferring heat to the circulating water of the heating system through a heat exchanger, without the geothermal flow directly entering the system. When developing a geothermal heating plan, it is necessary to consider both the comprehensive utilization of geothermal energy for heating, hot water supply, and industrial, agricultural, and livestock purposes, as well as the tiered utilization of geothermal energy to maximize the temperature difference of the geothermal flow and thus maximize the utilization of geothermal energy.

[0003] However, it still has some drawbacks. For example, the entire geothermal heating system is basically composed of multiple plate heat exchangers and heat pumps. The main function of the plate heat exchangers is heat conduction and convection. The existing plate heat exchangers are all independent units, and it is not possible to install multiple plate heat exchangers together as a whole. This makes it difficult to integrate and manage the system. In addition, the current visual monitoring panels of geothermal heating systems generally adopt a fixed installation design. The panels cannot be adjusted to multiple angles according to the operator's viewing needs. At the same time, the fixed structure lacks a storage and protection mechanism. Long-term exposure to humid and dusty working environments can easily cause a decrease in instrument accuracy and corrosion of mechanical parts, which seriously affects the reliability and service life of system monitoring. Summary of the Invention

[0004] The technical problem to be solved by this utility model is: to provide an integrated device for a geothermal heating system based on the coupling of a plate heat exchanger and a two-stage heat pump, in view of the above-mentioned problems.

[0005] The technical solution adopted by this utility model is: an integrated device for geothermal heating system based on plate heat exchanger and two-stage heat pump coupling, characterized in that it includes a high-temperature heat pump, a low-temperature heat pump and multiple sets of plate heat exchanger devices;

[0006] The plate switching device includes two side plates and several plates disposed between the two side plates. The front end of each side plate is provided with a plug-in plate, and the rear end of each side plate is provided with a plug-in groove adapted to the plug-in plate. The plug-in groove is provided with a locking mechanism that can be used to lock the plug-in plate.

[0007] The multiple sets of plate heat exchangers are arranged in front and behind, and the connection between two adjacent plate heat exchangers is achieved by the plug plate of the rear plate heat exchanger and the plug slot of the front plate heat exchanger, and the relative position of the plug plate and the plug slot is locked by a locking mechanism.

[0008] The first medium inlet and outlet of each plate heat exchanger is connected through the first medium connecting pipeline, and the first medium connecting pipeline is connected to the high temperature heat pump.

[0009] The second medium inlet and outlet of each plate heat exchanger are connected through the second medium connecting pipeline, and the second medium connecting pipeline is connected to the low-temperature heat pump.

[0010] The locking mechanism includes:

[0011] The first mounting hole is provided on the groove wall above the insertion slot;

[0012] An operating hole is provided on the outer side of the side plate and communicates with the first mounting hole;

[0013] The first locking element is placed in the first mounting hole and has a first damping telescopic rod, a linkage plate and a pin rod. The upper end of the first damping telescopic rod is connected to the bottom of the first mounting hole, and the lower end of the first damping telescopic rod is connected to the linkage plate and the pin rod in sequence.

[0014] A return spring is fitted onto the first damping telescopic rod. The upper end of the return spring is supported at the bottom of the second mounting hole, and the lower end is supported at the linkage plate.

[0015] The operating lever is inserted into the operating hole and fixedly connected to the linkage plate located in the first mounting hole;

[0016] The first insertion hole is located on the upper side wall of the insertion plate and can cooperate with the insertion pin.

[0017] The locking mechanism includes:

[0018] The second mounting hole is provided on the groove wall below the insertion slot;

[0019] The second locking element is placed in the second mounting hole and has a second damping telescopic rod, a limiting ring and a limiting hemisphere, wherein the lower end of the damping telescopic rod is connected to the bottom of the second mounting hole, and the upper end of the damping telescopic rod is connected to the limiting ring and the limiting hemisphere in sequence.

[0020] A spring is fitted onto the second damping telescopic rod. The lower end of the spring is supported by the bottom of the second mounting hole, and the upper end is supported by the limiting ring.

[0021] The second insertion hole is located on the lower side wall of the insertion plate and can cooperate with the limiting hemisphere.

[0022] The plate heat exchanger has several plates that cooperate to form a first medium heat exchange channel and a second medium heat exchange channel. The side plate is provided with a first medium inlet and outlet I and a first medium inlet and outlet II that communicate with the first medium heat exchange channel, and a second medium inlet and outlet I and a second medium inlet and outlet II that communicate with the second medium heat exchange channel.

[0023] The two side plates are connected by a number of long bolts and nuts.

[0024] Rubber gaskets are provided between the plates. A set of side plates has a movable omnidirectional visual monitoring panel inside its surface. An auxiliary removal handle groove is fixedly connected above the omnidirectional visual monitoring panel. A control panel is installed on the front of the omnidirectional visual monitoring panel. An auxiliary rotating shaft is fixedly connected to the lower side of one side of the omnidirectional visual monitoring panel. The auxiliary rotating shaft moves inside the side plate. A gear rotating shaft is fixedly connected to the lower side of the other side of the omnidirectional visual monitoring panel. A telescopic double-sloping limit rod moves to one side of the gear rotating shaft. The telescopic double-sloping limit rod moves inside an angle limiter. The angle limiter is fixedly connected to the inside of one side of the side plate. A damping reset device is installed on one side of the telescopic double-sloping limit rod. The damping reset device is installed inside the angle limiter.

[0025] The beneficial effects of this utility model are: through the locking structure of the plug-in plate and the plug-in slot, the front and rear plate switching devices can be quickly connected into a whole. The installation method is simple and convenient, which facilitates system integration and management, reduces system space occupation, and the number of plate switching devices can be expanded as needed. The expanded structure is also more stable.

[0026] This utility model adopts a flip-top design combined with a linkage mechanism of gear shaft and telescopic double inclined limit rod, which can realize the angle adjustment and precise positioning of the full-angle visual monitoring panel. During operation, only force is needed to overcome the damping to complete the angle switching. After adjustment, it automatically locks without rebound, effectively avoiding dust accumulation and mechanical corrosion of the full-angle visual monitoring panel. Moreover, the overall structure does not require electric drive, thus extending the service life of the full-angle visual monitoring panel. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the plate heat exchanger device in the embodiment.

[0028] Figure 2 This is a schematic diagram showing the connections between the plate heat exchangers in the embodiment.

[0029] Figure 3 This is a schematic diagram illustrating the fit between the connector plate and the connector slot in the embodiment.

[0030] Figure 4 This is a schematic diagram of the locking mechanism in the embodiment.

[0031] Figure 5 This is a schematic diagram of the structure of the all-angle visual monitoring panel in the embodiment.

[0032] In the diagram: 1. Long bolt; 11. Nut; 2. First medium inlet / outlet I; 3. Second medium inlet / outlet I; 4. Side plate; 41. Insert plate; 42. Insert groove; 43. First insertion hole; 44. Second insertion hole; 5. Plate; 6. Rubber gasket; 7. First locking element; 71. Linkage plate; 72. Pin rod; 73. Return spring; 74. First damping telescopic rod; 8. Limiting hemisphere; 81. Limiting ring; 82. Elastic spring; 83. Second damping device telescopic rod; 9. Foot; 10. Full-angle visual monitoring panel; 12. Auxiliary removal handle slot; 13. Control panel; 14. Auxiliary rotating shaft; 15. Gear rotating shaft; 16. Angle limiter; 17. Telescopic double inclined plane limit rod; 18. Damping return device. Detailed Implementation

[0033] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0034] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0035] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0036] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0037] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0038] This embodiment is an integrated device for a geothermal heating system based on the coupling of plate heat exchangers and two-stage heat pumps, including a high-temperature heat pump, a low-temperature heat pump, and multiple sets of plate heat exchangers.

[0039] In this example, the plate heat exchanger includes two side plates and several plates disposed between the two side plates. Rubber gaskets are provided between the plates and sealed by the rubber gaskets so that a first medium heat exchange channel and a second medium heat exchange channel are formed between the plates.

[0040] In this embodiment, the side plate is provided with a first medium inlet / outlet I and a first medium inlet / outlet II that are connected to the first medium heat exchange channel, and a second medium inlet / outlet I and a second medium inlet / outlet II that are connected to the second medium heat exchange channel.

[0041] In this example, the two side plates are connected by several long bolts and nuts, which clamp several plates and rubber gaskets between them.

[0042] In this embodiment, each of the two side plates has a plug-in plate at its front end and a plug-in slot at its rear end that can be adapted to the plug-in plate. The plug-in slot is provided with a locking mechanism for locking the plug-in plate, including a manual locking mechanism and an automatic locking mechanism. When the plug-in plate is inserted into the plug-in slot of the front plate-changing device, the locking mechanism locks the plug-in plate and the plug-in slot, thereby realizing the connection between the front and rear plate-changing devices.

[0043] In this embodiment, the manual locking mechanism includes a first locking element, a return spring, and an operating rod. A first mounting hole is provided on the groove wall above the insertion slot, and an operating hole is provided on the outer side of the side plate, which communicates with the first mounting hole. The first locking element is placed in the first mounting hole and includes a first damping telescopic rod, a linkage plate, and a pin. The upper end of the first damping telescopic rod is connected to the bottom of the first mounting hole, and the lower end of the first damping telescopic rod is connected to the linkage plate and the pin in sequence. The return spring is fitted onto the first damping telescopic rod, with its upper end supported by the bottom of the second mounting hole and its lower end supported by the linkage plate. The operating rod is inserted into the operating hole and fixedly connected to the linkage plate located in the first mounting hole. The operating rod can drive the linkage plate to move up and down in the first mounting hole, thereby driving the pin to move up and down.

[0044] In this example, a first insertion hole is provided on the upper side wall of the plug plate. When the plug plate is fully inserted into the plug slot, the first insertion hole corresponds to the first mounting hole, and the pin can be inserted into the first insertion hole to lock the plug plate and the plug slot.

[0045] In this embodiment, the automatic locking mechanism includes a second locking member and a spring, etc. A second mounting hole is provided on the groove wall below the insertion groove. The second locking member is placed in the second mounting hole. The locking member has two damping telescopic rods, a limiting ring and a limiting hemisphere. The lower end of the damping telescopic rod is connected to the bottom of the second mounting hole, and the upper end of the damping telescopic rod is connected to the limiting ring and the limiting hemisphere in sequence. The spring is fitted on the second damping telescopic rod. The lower end of the spring is supported by the bottom of the second mounting hole, and the upper end is supported by the limiting ring.

[0046] In this example, a second insertion hole is provided on the lower side wall of the plug plate, which can cooperate with the limiting hemisphere. When the plug plate is fully inserted into the plug slot, the first insertion hole corresponds to the first mounting hole. The limiting hemisphere can automatically enter the first insertion hole under the elastic spring, realizing the initial locking of the plug plate and the plug slot. The sound generated when the limiting hemisphere enters the first insertion hole can provide the user with the plug plate in place. The first insertion hole corresponds to the position of the first mounting hole, and the pin rod can be inserted into the first insertion hole.

[0047] In this embodiment, the first medium inlet and outlet of multiple plate heat exchangers are connected in series through a first medium connecting pipeline and connected to a high-temperature heat pump; the second medium inlet and outlet of multiple plate heat exchangers are connected in series through a second medium connecting pipeline and connected to a high-temperature heat pump.

[0048] In this embodiment, the omnidirectional visual monitoring panel is designed to move in a slot on one side of a set of side panels using auxiliary rotating shafts and gear rotating shafts on both sides below. The auxiliary handle slot allows the omnidirectional visual monitoring panel to be removed from the slot on the side panel. A telescopic double-sloping limit rod is movable on one side of the gear rotating shaft. The front end has a double-sloping design. When flipping the omnidirectional visual monitoring panel, the user only needs to apply a little force to use the rack of the gear rotating shaft to squeeze the telescopic double-sloping limit rod, so that the telescopic double-sloping limit rod enters the angle limiter and leaves the slot formed by the rack of the gear rotating shaft. The angle can be adjusted in this way. After stopping the flipping, the telescopic double-sloping limit rod is inserted into the rack for limiting and fixing. The operation is convenient and can adapt to different angles.

[0049] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An integrated device for a geothermal heating system based on plate heat exchanger and two-stage heat pump coupling, characterized in that, This includes high-temperature heat pumps, low-temperature heat pumps, and multiple plate heat exchangers; The plate switching device includes two side plates and several plates disposed between the two side plates. The front end of each side plate is provided with a plug-in plate, and the rear end of each side plate is provided with a plug-in groove adapted to the plug-in plate. The plug-in groove is provided with a locking mechanism that can be used to lock the plug-in plate. The multiple sets of plate heat exchangers are arranged in front and behind, and the connection between two adjacent plate heat exchangers is achieved by the plug plate of the rear plate heat exchanger and the plug slot of the front plate heat exchanger, and the relative position of the plug plate and the plug slot is locked by a locking mechanism. The first medium inlet and outlet of each plate heat exchanger is connected through the first medium connecting pipeline, and the first medium connecting pipeline is connected to the high temperature heat pump. The second medium inlet and outlet of each plate heat exchanger are connected through the second medium connecting pipeline, and the second medium connecting pipeline is connected to the low-temperature heat pump.

2. The integrated device for a geothermal heating system based on plate heat exchanger and two-stage heat pump coupling as described in claim 1, characterized in that, The locking mechanism includes: The first mounting hole is provided on the groove wall above the insertion slot; An operating hole is provided on the outer side of the side plate and communicates with the first mounting hole; The first locking element is placed in the first mounting hole and has a first damping telescopic rod, a linkage plate and a pin rod. The upper end of the first damping telescopic rod is connected to the bottom of the first mounting hole, and the lower end of the first damping telescopic rod is connected to the linkage plate and the pin rod in sequence. A return spring is fitted onto the first damping telescopic rod. The upper end of the return spring is supported at the bottom of the second mounting hole, and the lower end is supported at the linkage plate. The operating lever is inserted into the operating hole and fixedly connected to the linkage plate located in the first mounting hole; The first insertion hole is located on the upper side wall of the insertion plate and can cooperate with the insertion pin.

3. The integrated device for a geothermal heating system based on plate heat exchanger and two-stage heat pump coupling as described in claim 2, characterized in that, The locking mechanism includes: The second mounting hole is provided on the groove wall below the insertion slot; The second locking element is placed in the second mounting hole and has a second damping telescopic rod, a limiting ring and a limiting hemisphere, wherein the lower end of the damping telescopic rod is connected to the bottom of the second mounting hole, and the upper end of the damping telescopic rod is connected to the limiting ring and the limiting hemisphere in sequence. A spring is fitted onto the second damping telescopic rod. The lower end of the spring is supported by the bottom of the second mounting hole, and the upper end is supported by the limiting ring. The second insertion hole is located on the lower side wall of the insertion plate and can cooperate with the limiting hemisphere.

4. The integrated device for geothermal heating system based on plate heat exchanger and two-stage heat pump coupling as described in claim 1, characterized in that: The plate heat exchanger has several plates that cooperate to form a first medium heat exchange channel and a second medium heat exchange channel. The side plate is provided with a first medium inlet and outlet I and a first medium inlet and outlet II that communicate with the first medium heat exchange channel, and a second medium inlet and outlet I and a second medium inlet and outlet II that communicate with the second medium heat exchange channel.

5. The integrated device for a geothermal heating system based on plate heat exchanger and two-stage heat pump coupling as described in claim 1, characterized in that: The two side plates are connected by a number of long bolts and nuts.

6. The integrated device for a geothermal heating system based on plate heat exchanger and two-stage heat pump coupling as described in claim 1, characterized in that: Rubber gaskets are provided between the plates. A set of side plates has a movable omnidirectional visual monitoring panel inside its surface. An auxiliary removal handle groove is fixedly connected above the omnidirectional visual monitoring panel. A control panel is installed on the front of the omnidirectional visual monitoring panel. An auxiliary rotating shaft is fixedly connected to the lower side of one side of the omnidirectional visual monitoring panel. The auxiliary rotating shaft moves inside the side plate. A gear rotating shaft is fixedly connected to the lower side of the other side of the omnidirectional visual monitoring panel. A telescopic double-sloping limit rod moves to one side of the gear rotating shaft. The telescopic double-sloping limit rod moves inside an angle limiter. The angle limiter is fixedly connected to the inside of one side of the side plate. A damping reset device is installed on one side of the telescopic double-sloping limit rod. The damping reset device is installed inside the angle limiter.

Images