Modular combined ground source heat pump borehole wellhead sealing structure

Abstract

This utility model relates to the field of ground source heat pump buried pipe wellhead sealing technology, and discloses a modular combined ground source heat pump buried pipe wellhead sealing structure. This modular combined ground source heat pump buried pipe wellhead sealing structure includes a conical base and a meniscus. The bottom of the conical base has anchoring holes distributed at four corners, and a flange is fixedly connected to the top of the conical base. The bottom of the conical base has a sealing gasket adapted to the anchoring holes. Above the flange are symmetrically distributed and mutually adapted menisci. This device provides multiple sealing guarantees, and its modular design facilitates quick installation and disassembly, thereby improving construction efficiency. It can adapt to the thermal expansion and contraction of the pipeline, avoiding sealing failure due to temperature changes. It solves the problems of concrete-cast sealing structures, which are prone to cracking leading to sealing failure, require destructive removal for maintenance, and cannot adapt to the thermal expansion and contraction of the pipeline.

Description

Technical Field

[0001] This utility model relates to the field of wellhead sealing technology for ground source heat pump buried pipes, specifically a modular combination wellhead sealing structure for ground source heat pump buried pipes. Background Technology

[0002] Ground source heat pump systems, as a highly efficient and energy-saving heating and cooling technology, have been widely used in the building sector in recent years. The buried pipe heat exchange system is the core component of a ground source heat pump, while the wellhead sealing structure is a crucial element ensuring the long-term stable operation of the system. Currently, the most common buried pipe wellhead sealing structures on the market are made of poured concrete.

[0003] Concrete-cast sealing structures are prone to cracking, leading to seal failure. Repairs require destructive dismantling, and they cannot accommodate the thermal expansion and contraction of pipelines. Therefore, a modular combination ground source heat pump buried pipe wellhead sealing structure is proposed to solve the above problems. Utility Model Content

[0004] Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a modular combination of ground source heat pump buried pipe wellhead sealing structure, which has multiple sealing guarantees and a modular design for quick installation and disassembly, thereby improving construction efficiency. It can adapt to the thermal expansion and contraction of the pipeline and avoid sealing failure caused by temperature changes. It solves the problems of concrete-cast sealing structures being prone to cracking and sealing failure, requiring destructive removal for maintenance, and being unable to adapt to the thermal expansion and contraction of the pipeline.

[0005] (II) Technical Solution The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A modular combination ground source heat pump buried pipe wellhead sealing structure, including a conical base and a semi-circular plate, the bottom of the conical base is provided with anchoring holes distributed at four corners, the top of the conical base is fixedly connected with a flange, and the bottom of the conical base is provided with a sealing gasket adapted to the anchoring holes. The flange is provided with symmetrically distributed and mutually compatible menisci on its upper side. The top of each menisci is provided with connecting components arranged in a ring array and extending into the holes on its surface, which are compatible with the through holes on the flange surface. Each side of the menisci is provided with a first sealing strip that is mutually compatible, and the bottom of the opposite side of each menisci is provided with a second sealing strip that is compatible with the flange. The opposite side of each meniscus has several circular holes, and the opposite side of each meniscus has a pipe clamping and sealing assembly that is adapted to and mutually compatible with the circular holes.

[0006] The beneficial effects of this utility model are: This modular ground source heat pump buried pipe wellhead sealing structure involves pre-embedding bolts around the wellhead, placing a conical base through anchor holes on the outside of the bolts at the top of the wellhead, tightening the nuts, and sealing the gasket between the conical base and the top of the wellhead. The buried pipe is then inserted into the well, and a pipe clamping sealing assembly compatible with the pipe is selected and installed on the opposite side of the meniscus. The meniscus are symmetrically placed and pressed against the top of the flange, while the buried pipe is clamped to the opposite side of the pipe clamping sealing assembly. The connecting assembly is then pressed down so that its lower end passes through the through hole on the flange surface, completing the installation. The first sealing strip, the second sealing strip, and the pipe clamping sealing assembly form a sealing barrier, providing multiple sealing guarantees. The modular design facilitates quick installation and disassembly, improving construction efficiency. It also adapts to the thermal expansion and contraction of the pipeline, avoiding seal failure due to temperature changes.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the connecting assembly includes a columnar shell, a pressure rod, a first spring, a wedge-shaped locking block, and a second spring. The top of each meniscus is fixedly connected to a columnar shell arranged in a circular array. The top of each columnar shell is provided with a pressure rod extending into the hole on the surface of the meniscus and adapted to the through hole on the surface of the flange. The outer side of each pressure rod is fitted with a first spring located inside the columnar shell. The lower end of each pressure rod is provided with a wedge-shaped locking block arranged symmetrically on the left and right and extending to its outer side. The opposite side of each wedge-shaped locking block is provided with a second spring located inside the pressure rod. The opposite side of each wedge-shaped locking block is in contact with the inner wall of the hole on the surface of the meniscus. Furthermore, the pipe clamping and sealing assembly includes clamping blocks, clamping grooves, a third sealing strip, guide rods, and a fourth sealing strip. Each side of the meniscus is provided with mutually adaptable clamping blocks. Each side of the clamping blocks is fixedly connected with a plurality of guide rods adapted to the circular holes. Each side of the clamping blocks is provided with clamping grooves that are symmetrically distributed and mutually adaptable. Each side of the clamping blocks is provided with a third sealing strip that is adapted to and mutually adaptable to the clamping grooves. Each side of the clamping blocks is provided with a fourth sealing strip that is adapted to and mutually adaptable to the meniscus. Furthermore, the first sealing strip, the second sealing strip, and the third sealing strip form a closed-loop sealing circuit, and the first sealing strip, the second sealing strip, and the fourth sealing strip form a closed-loop sealing circuit.

[0009] The beneficial effects of adopting the above-mentioned further solution are as follows: A clamping block with a clamping groove compatible with the buried pipe is selected. The clamping block is installed on the opposite side of the meniscus by inserting a guide rod into the round hole. The meniscus is placed symmetrically and pressed against the top of the flange. At the same time, the buried pipe is clamped to the opposite side of the clamping groove, ensuring a tight fit between the third sealing strip and the outside of the buried pipe. Then, the pressure rod is pressed down, allowing its lower end to pass through the through hole on the flange surface until the wedge-shaped locking block is pushed out by the second spring. The device is then installed. The first, second, and third sealing strips form the first sealing barrier, and the first, second, and fourth sealing strips form the second sealing barrier, achieving multiple sealing protections. The modular design of this device facilitates rapid installation and disassembly, thereby improving construction efficiency. The multiple sealing strips can adapt to the thermal expansion and contraction of the pipeline, avoiding sealing failure due to temperature changes.

[0010] Furthermore, each of the pressure rods has a safety pin extending to its rear side and located at the top of the cylindrical shell.

[0011] The advantage of adopting the above-mentioned further solution is that the safety pin needs to be pulled out when the pressure lever is pressed, which prevents the wedge block from popping out prematurely during transportation or accidental contact. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is an assembly drawing of the present utility model; Figure 4 This is a cross-sectional view of the columnar shell structure of this utility model.

[0013] In the diagram: 1. Conical base; 2. Meniscus; 3. Anchor hole; 4. Flange; 5. Connecting assembly; 501. Cylindrical shell; 502. Pressure rod; 503. First spring; 504. Wedge head block; 505. Second spring; 6. First sealing strip; 7. Second sealing strip; 8. Round hole; 9. Pipe clamping and sealing assembly; 901. Clamping block; 902. Clamping groove; 903. Third sealing strip; 904. Guide rod; 905. Fourth sealing strip; 10. Safety pin; 11. Sealing gasket. Detailed Implementation

[0014] 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.

[0015] In the embodiments, by Figure 1-4 The present invention provides a modular combination of ground source heat pump buried pipe wellhead sealing structure, which includes a conical base 1 and a semi-circular plate 2. The bottom of the conical base 1 is provided with anchoring holes 3 distributed at four corners. The top of the conical base 1 is fixedly connected to a flange 4. The bottom of the conical base 1 is provided with a sealing gasket 11 adapted to the anchoring holes 3. The flange 4 is provided with symmetrically distributed and mutually compatible menisci 2 on its upper side. The top of each menisci 2 is provided with connecting components 5 arranged in a ring array and extending into the holes on its surface and compatible with the through holes on the surface of the flange 4. The opposite side of each menisci 2 is provided with a first sealing strip 6 that is mutually compatible. The bottom of the opposite side of each menisci 2 is provided with a second sealing strip 7 that is compatible with the flange 4. The opposite side of the meniscus 2 is provided with a number of circular holes 8. The opposite side of the meniscus 2 is provided with pipe clamping and sealing components 9 that are adapted to and mutually adapted to the circular holes 8. The connecting assembly 5 includes a columnar shell 501, a pressure rod 502, a first spring 503, a wedge-shaped locking block 504, and a second spring 505. The top of each of the menisci 2 is fixedly connected with columnar shells 501 arranged in a ring array. The top of each columnar shell 501 is provided with a pressure rod 502 that extends into the hole on the surface of the menisci 2 and is adapted to the through hole on the surface of the flange 4. The outer side of each pressure rod 502 is fitted with a first spring 503 located inside the columnar shell 501. The lower end of each pressure rod 502 is provided with a wedge-shaped locking block 504 that is symmetrically distributed on the left and right and extends to its outer side. The opposite side of each wedge-shaped locking block 504 is provided with a second spring 505 located inside the pressure rod 502. The opposite side of each wedge-shaped locking block 504 is in contact with the inner wall of the hole on the surface of the menisci 2. The pipe clamping and sealing assembly 9 includes a clamping block 901, a clamping groove 902, a third sealing strip 903, a guide rod 904, and a fourth sealing strip 905. Each side of the meniscus 2 is provided with a clamping block 901 that is adapted to each other. Each side of the clamping block 901 is fixedly connected with a plurality of guide rods 904 that are adapted to the circular hole 8. Each side of the clamping block 901 is provided with a clamping groove 902 that is symmetrically distributed and adapted to each other. Each side of the clamping block 901 is provided with a third sealing strip 903 that is adapted to and adapted to the clamping groove 902. Each side of the clamping block 901 is provided with a fourth sealing strip 905 that is adapted to and adapted to the meniscus 2. The first sealing strip 6, the second sealing strip 7 and the third sealing strip 903 form a closed-loop sealing circuit, and the first sealing strip 6, the second sealing strip 7 and the fourth sealing strip 905 form a closed-loop sealing circuit. A clamping block 901, compatible with the clamping groove 902 of the buried pipe, is selected. The clamping block 901 is inserted into the round hole 8 through the guide rod 904 and installed on the opposite side of the meniscus 2. The meniscus 2 is placed symmetrically and pressed against the top of the flange 4. At the same time, the buried pipe is clamped to the opposite side of the clamping groove 902, so that the third sealing strip 903 is tightly fitted to the outside of the buried pipe. Then, the pressure rod 502 is pressed down, so that the lower end of the pressure rod 502 passes through the through hole on the surface of the flange 4 until the wedge head block 504 is pushed out by the second spring 505. The device is then installed. The first sealing strip 6, the second sealing strip 7 and the third sealing strip 903 form the first sealing barrier, and the first sealing strip 6, the second sealing strip 7 and the fourth sealing strip 905 form the second sealing barrier, achieving multiple sealing protection. The modular design of this device facilitates quick installation and disassembly, thereby improving construction efficiency. The multiple sealing strips can adapt to the thermal expansion and contraction of the pipeline, avoiding sealing failure due to temperature changes. Each pressure bar 502 has a safety pin 10 extending to its rear side and located at the top of the cylindrical shell 501 on its front side; The safety pin 10 needs to be pulled out when pressing the lever 502 to prevent the wedge block 504 from popping out prematurely during transportation or accidental activation.

[0016] Working principle: Step 1: Pre-embed the bolts around the perimeter of the buried pipe well opening, put the conical base 1 through the anchoring hole 3 on the outside of the bolt and at the top of the buried pipe well opening, tighten the nut, seal the sealing gasket 11 between the conical base 1 and the top of the buried pipe well opening, and put the buried pipe into the well. Step 2: Select a clamping block 901 that is compatible with the clamping groove 902 of the buried pipe. Insert the clamping block 901 into the round hole 8 through the guide rod 904 and install it on the opposite side of the meniscus 2. Place the meniscus 2 symmetrically and press it against the top of the flange 4. At the same time, clamp the buried pipe on the opposite side of the clamping groove 902 so that the third sealing strip 903 is tightly attached to the outside of the buried pipe. Step 3: Pull out the safety pin 10, press down the pressure rod 502, so that the lower end of the pressure rod 502 passes through the through hole on the surface of the flange 4 until the wedge head block 504 is pushed out by the second spring 505. The device can then be installed. The first sealing strip 6, the second sealing strip 7 and the third sealing strip 903 form the first sealing barrier, and the first sealing strip 6, the second sealing strip 7 and the fourth sealing strip 905 form the second sealing barrier.

[0017] 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.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular combined ground source heat pump borehole mouth sealing structure comprising a conical base (1) and a meniscus (2), characterized in that: The bottom of the conical base (1) is provided with anchoring holes (3) distributed at four corners, the top of the conical base (1) is fixedly connected with a flange (4), and the bottom of the conical base (1) is provided with a sealing gasket (11) that matches the anchoring holes (3). The flange (4) is provided with symmetrically distributed and mutually compatible menisci (2) on its upper part. The top of each menisci (2) is provided with connecting components (5) arranged in a ring array and extending into the holes on its surface and compatible with the through holes on the surface of the flange (4). The opposite side of each menisci (2) is provided with a first sealing strip (6) that is mutually compatible. The bottom of the opposite side of each menisci (2) is provided with a second sealing strip (7) that is compatible with the flange (4). The meniscus (2) has several circular holes (8) on the arc surface on the opposite side. The meniscus (2) has pipe clamping and sealing components (9) that are adapted to and mutually compatible with the circular holes (8) on the opposite side.

2. The modular combined ground-source heat pump borehole wellhead seal structure according to claim 1, characterized in that: The connecting assembly (5) includes a columnar shell (501), a pressure rod (502), a first spring (503), a wedge-shaped locking block (504), and a second spring (505). The top of each of the menisci (2) is fixedly connected with columnar shells (501) arranged in a ring array. The top of each columnar shell (501) is provided with a pressure rod (502) extending into the hole on the surface of the menisci (2) and adapted to the through hole on the surface of the flange (4). The outer side of each pressure rod (502) is fitted with a first spring (503) located inside the columnar shell (501). The lower end of each pressure rod (502) is provided with a wedge-shaped locking block (504) arranged symmetrically on the left and right and extending to its outer side. The opposite side of each wedge-shaped locking block (504) is provided with a second spring (505) located inside the pressure rod (502). The opposite side of each wedge-shaped locking block (504) is in contact with the inner wall of the hole on the surface of the menisci (2).

3. The modular combination ground source heat pump buried pipe wellhead sealing structure according to claim 2, characterized in that: Each of the pressure rods (502) has a safety pin (10) extending to its rear side and located at the top of the columnar shell (501) on its front side.

4. The modular combination ground source heat pump buried pipe wellhead sealing structure according to claim 1, characterized in that: The pipe clamping and sealing assembly (9) includes a clamping block (901), a clamping groove (902), a third sealing strip (903), a guide rod (904), and a fourth sealing strip (905). Each side of the meniscus (2) is provided with a clamping block (901) that is compatible with each other. Each side of the clamping block (901) is fixedly connected with a number of guide rods (904) that are compatible with the round hole (8). Each side of the clamping block (901) is provided with a clamping groove (902) that is symmetrically distributed and compatible with each other. Each side of the clamping block (901) is provided with a third sealing strip (903) that is compatible with the clamping groove (902). Each side of the clamping block (901) is provided with a fourth sealing strip (905) that is compatible with the meniscus (2).

5. The modular combination ground source heat pump buried pipe wellhead sealing structure according to claim 4, characterized in that: The first sealing strip (6), the second sealing strip (7) and the third sealing strip (903) form a closed-loop sealing circuit, and the first sealing strip (6), the second sealing strip (7) and the fourth sealing strip (905) form a closed-loop sealing circuit.

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