Sectional type middle-deep layer underground heat exchanger sleeve connecting structure

Abstract

The utility model relates to the technical field of middle-deep layer underground heat exchangers, in particular to a sectional type middle-deep layer underground heat exchanger sleeve connecting structure which comprises an outer pipe, a first connecting ring block is arranged at the bottom end of the outer pipe, an inner pipe is arranged below the first connecting ring block, and a T-shaped connecting ring block is arranged at the top end of the inner pipe. A first ring groove is formed in the inner side of the top end of the T-shaped connecting ring block, a first mounting ring block is arranged at the bottom end of the first connecting ring block, a second ring groove is formed in the inner side of the bottom end of the first connecting ring block, and a second mounting ring block is arranged on the outer side of the T-shaped connecting ring block; a first connecting ring block and a T-shaped connecting ring block are in butt joint, the first connecting ring block is rotated to screw a first mounting ring block into a first ring groove in a threaded mode, then a second mounting ring block is rotated, the second mounting ring block is continuously upwards screwed to screw the second mounting ring block into a second ring groove in a threaded mode, and the outer pipe and the inner pipe are further stably connected and fixed. And meanwhile, the connection steps are simple and convenient, and the operation time is saved.

Description

Technical Field

[0001] This utility model relates to the field of medium-deep underground heat exchanger technology, and in particular to a segmented medium-deep underground heat exchanger sleeve connection structure. Background Technology

[0002] Medium-deep underground heat exchangers are a type of high-efficiency geothermal energy utilization system, mainly used for building heating, cooling and domestic hot water supply. They utilize the thermal energy of the underground constant temperature layer by drilling medium-deep geothermal holes, and transfer the heat to the ground heat pump system through a closed circulation pipeline. The heat pump then raises the temperature and supplies it to the user.

[0003] Most current medium-deep underground heat exchangers adopt a segmented shell-and-tube design. However, the shell-and-tube connection structure is mostly set in a relatively simple way. Either the two ends of the shell are directly connected by welding, which requires welding tools and is inconvenient to disassemble, or a simple one-way threaded connection is used, which often has poor connection stability and affects the service life of the heat exchanger.

[0004] Therefore, in view of the poor connection stability of the existing sleeve connection structure, a segmented medium-deep underground heat exchanger sleeve connection structure can be designed. The sleeve connection stability is ensured by bidirectional threaded connection. At the same time, the connection operation steps are simple and convenient, and the assembly and disassembly of the sleeve can be completed quickly, saving operation time and thus effectively enhancing the practical value of the sleeve. Utility Model Content

[0005] In order to overcome the problems that most medium-deep underground heat exchanger casing connection structures are relatively simple, or the two ends of the casing are directly connected by welding, which requires welding tools and is inconvenient to disassemble, or the connection is often unstable due to simple one-way threaded connection, this utility model is proposed.

[0006] The technical solution of this utility model is as follows: a segmented medium-deep underground heat exchanger casing connection structure, including an outer pipe, an inner pipe, a first connecting ring block, a T-shaped connecting ring block, a first annular groove, a first mounting ring block, a second annular groove, a fixing ring block, and a second mounting ring block. The bottom end of the outer pipe is provided with a first connecting ring block, the inner pipe is provided below the first connecting ring block, the top end of the inner pipe is provided with a T-shaped connecting ring block, the top inner side of the T-shaped connecting ring block is provided with a first annular groove, the bottom end of the first connecting ring block is provided with a first mounting ring block, the bottom inner side of the first connecting ring block is provided with a second annular groove, the outer side of the T-shaped connecting ring block is provided with a fixing ring block, and the outer side of the fixing ring block is provided with a second mounting ring block.

[0007] Preferably, the outer tube is fixedly connected by a first connecting ring block, and the inner tube is fixedly connected by a T-shaped connecting ring block. The first connecting ring block and the T-shaped connecting ring block are aligned, and the first mounting ring block is rotated to screw the first mounting ring block into the first ring groove, thus initially connecting the outer tube and the inner tube. Subsequently, the second mounting ring block is connected by a fixing ring block, and the second mounting ring block is screwed up to screw its thread into the second ring groove, further connecting and fixing the outer tube and the inner tube. This ensures the stability of the sleeve connection, and the connection operation steps are simple and convenient, allowing for quick assembly and disassembly of the sleeve, saving operation time and enhancing the practical value of the sleeve.

[0008] Preferably, the first mounting ring block is threadedly connected to the first ring groove, the second ring groove is opened on the outer side of the first mounting ring block, the inner side of the second mounting ring block is threadedly connected to the outer side of the fixed ring block, and the second mounting ring block is threadedly connected to the second ring groove.

[0009] Preferably, the top of the first connecting ring block is provided with an L-shaped ring block, and the bottom of the outer tube is provided with an L-shaped ring groove, and the L-shaped ring block is fitted and rotated along the L-shaped ring groove.

[0010] Preferably, a sealing ring groove is provided on the inner side of the bottom end of the first connecting ring block, the first mounting ring block is disposed on the outer side of the sealing ring groove, and a first flexible base is provided on the top end of the T-shaped connecting ring block.

[0011] Preferably, a sealing ring block is provided at the top of the first flexible substrate, and the sealing ring block is fitted and connected with a sealing ring groove, with the first ring groove being opened on the outer side of the sealing ring block.

[0012] Preferably, the bottom end of the first connecting ring block is provided with a second flexible base, and the first mounting ring block is disposed at the bottom end of the second flexible base.

[0013] Preferably, a rotating plate is provided on the outer side of the bottom end of the second mounting ring block, an L-shaped flexible base is provided on the outer side of the T-shaped connecting ring block, and the fixing ring block is provided on the outer side of the L-shaped flexible base.

[0014] The beneficial effects of this utility model are:

[0015] When connecting the casing, align the first connecting ring block and the T-shaped connecting ring block, rotate the first connecting ring block to screw the first mounting ring block into the first ring groove, thus initially connecting the outer and inner pipes. Subsequently, rotate the second mounting ring block around the fixing ring block, continuously screwing the second mounting ring block into the second ring groove, further stabilizing the connection between the outer and inner pipes. This addresses the problem that most medium-deep underground heat exchanger casing connection structures are relatively simple, or the two ends of the casing are directly connected by welding, which requires welding tools and is inconvenient to disassemble, or the connection stability is often poor due to simple one-way threaded connections. This enhances the practical value of the casing. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of a segmented medium-deep underground heat exchanger casing connection structure according to this utility model.

[0017] Figure 2 The diagram shown is a three-dimensional cross-sectional view of the connecting ring block of a segmented medium-deep underground heat exchanger casing connection structure according to this utility model.

[0018] Figure 3 The diagram shown is a three-dimensional cross-sectional view of the outer tube and the first connecting ring block of a segmented medium-deep underground heat exchanger casing connection structure according to this utility model.

[0019] Figure 4 The diagram shown is a three-dimensional structural illustration of a flexible substrate for a segmented medium-deep underground heat exchanger casing connection structure according to this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Outer tube; 2. First connecting ring block; 201. L-shaped ring block; 202. L-shaped ring groove; 203. Sealing ring groove; 204. First flexible base; 205. Sealing ring block; 3. Inner tube; 4. T-shaped connecting ring block; 5. First ring groove; 6. First mounting ring block; 601. Second flexible base; 7. Second ring groove; 8. Fixing ring block; 9. Second mounting ring block; 901. Rotating plate; 902. L-shaped flexible base. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Example 1

[0023] Please see Figure 1 and Figure 2 This utility model provides an embodiment: a segmented medium-deep underground heat exchanger casing connection structure, including an outer pipe 1, an inner pipe 3, a first connecting ring block 2, a T-shaped connecting ring block 4, a first annular groove 5, a first mounting ring block 6, a second annular groove 7, a fixing ring block 8, and a second mounting ring block 9. The bottom end of the outer pipe 1 is provided with the first connecting ring block 2, the inner pipe 3 is provided below the first connecting ring block 2, the top end of the inner pipe 3 is provided with the T-shaped connecting ring block 4, and the inner side of the top end of the T-shaped connecting ring block 4 is provided with the first annular groove. 5. A first mounting ring block 6 is provided at the bottom end of the first connecting ring block 2. The first mounting ring block 6 is threadedly connected to the first ring groove 5. A second ring groove 7 is provided on the inner side of the bottom end of the first connecting ring block 2. The second ring groove 7 is provided on the outer side of the first mounting ring block 6. A fixing ring block 8 is provided on the outer side of the T-shaped connecting ring block 4. A second mounting ring block 9 is provided on the outer side of the fixing ring block 8. The inner side of the second mounting ring block 9 is threadedly connected to the outer side of the fixing ring block 8. The second mounting ring block 9 is threadedly connected to the second ring groove 7.

[0024] Please see Figure 2 and Figure 3 In this embodiment, an L-shaped ring block 201 is provided at the top of the first connecting ring block 2, and an L-shaped ring groove 202 is provided at the bottom of the outer tube 1. The L-shaped ring block 201 is fitted and rotated along the L-shaped ring groove 202, and the first connecting ring block 2 is fixed by the L-shaped ring block 201. When the first connecting ring block 2 is rotated, the L-shaped ring block 201 rotates synchronously along the L-shaped ring groove 202, thereby ensuring a stable rotational connection between the first connecting ring block 2 and the outer tube 1. A sealing ring groove 203 is provided on the inner side of the bottom end of the first connecting ring block 2. An installation ring block 6 is disposed on the outside of the sealing ring groove 203. A sealing ring block 205 is disposed at the top of the T-shaped connecting ring block 4. The sealing ring block 205 is fitted into the sealing ring groove 203. The first ring groove 5 is opened on the outside of the sealing ring block 205. When the first connecting ring block 2 is screwed into the first ring groove 5, the sealing ring block 205 is simultaneously screwed into the sealing ring groove 203. After the sealing ring block 205 is embedded in the sealing ring groove 203, the sealing ring block 205 ensures the sealing connection between the first connecting ring block 2 and the T-shaped connecting ring block 4.

[0025] Please see Figure 1 In this embodiment, a rotating plate 901 is provided on the outer side of the bottom end of the second mounting ring block 9. By rotating the rotating plate 901, the second mounting ring block 9 is driven to rotate, thereby flexibly driving the second mounting ring block 9 to rotate up or down.

[0026] When connecting the outer tube 1 and the inner tube 3, align the first connecting ring block 2 and the T-shaped connecting ring block 4, rotate the first connecting ring block 2 to drive the L-shaped ring block 201 to rotate synchronously in the L-shaped ring groove 202, and screw the first mounting ring block 6 into the first ring groove 5 so that the sealing ring block 205 is synchronously embedded in the sealing ring groove 203.

[0027] Subsequently, rotating plate 901 drives the second mounting ring block 9 to rotate upward around the fixed ring block 8. The second mounting ring block 9 is continuously rotated upward to screw it into the second ring groove 7, thus completing the connection operation between the outer tube 1 and the inner tube 3.

[0028] Example 2

[0029] Please see Figure 1 and Figure 2This utility model provides an embodiment: a segmented medium-deep underground heat exchanger casing connection structure, including an outer pipe 1, an inner pipe 3, a first connecting ring block 2, a T-shaped connecting ring block 4, a first annular groove 5, a first mounting ring block 6, a second annular groove 7, a fixing ring block 8, and a second mounting ring block 9. The bottom end of the outer pipe 1 is provided with the first connecting ring block 2, the inner pipe 3 is provided below the first connecting ring block 2, the top end of the inner pipe 3 is provided with the T-shaped connecting ring block 4, and the inner side of the top end of the T-shaped connecting ring block 4 is provided with the first annular groove. 5. A first mounting ring block 6 is provided at the bottom end of the first connecting ring block 2. The first mounting ring block 6 is threadedly connected to the first ring groove 5. A second ring groove 7 is provided on the inner side of the bottom end of the first connecting ring block 2. The second ring groove 7 is provided on the outer side of the first mounting ring block 6. A fixing ring block 8 is provided on the outer side of the T-shaped connecting ring block 4. A second mounting ring block 9 is provided on the outer side of the fixing ring block 8. The inner side of the second mounting ring block 9 is threadedly connected to the outer side of the fixing ring block 8. The second mounting ring block 9 is threadedly connected to the second ring groove 7.

[0030] Please see Figure 3 and Figure 4 In this embodiment, an L-shaped ring block 201 is provided at the top of the first connecting ring block 2, and an L-shaped ring groove 202 is provided at the bottom of the outer tube 1. The L-shaped ring block 201 is fitted and rotated along the L-shaped ring groove 202, and the first connecting ring block 2 is fixed by the L-shaped ring block 201. When the first connecting ring block 2 is rotated, the L-shaped ring block 201 rotates synchronously along the L-shaped ring groove 202, thereby ensuring a stable rotational connection between the first connecting ring block 2 and the outer tube 1. A sealing ring groove 203 is provided on the inner side of the bottom end of the first connecting ring block 2, and the first mounting ring block 6 is provided on the outer side of the sealing ring groove 203. The top of the T-shaped connecting ring block 4 is... A first flexible base 204 is provided, and a sealing ring block 205 is provided at the top of the first flexible base 204. The sealing ring block 205 is fitted and connected with the sealing ring groove 203. The first ring groove 5 is opened on the outside of the sealing ring block 205. When the first connecting ring block 2 is screwed into the first ring groove 5, the sealing ring block 205 is simultaneously screwed into the sealing ring groove 203. After the sealing ring block 205 is embedded in the sealing ring groove 203, the sealing ring block 205 ensures the sealing connection between the first connecting ring block 2 and the T-shaped connecting ring block 4. At the same time, the first flexible base 204 ensures the flexible connection between the sealing ring block 205 and the first connecting ring block 2.

[0031] The bottom end of the first connecting ring block 2 is provided with a second flexible base 601, and the first mounting ring block 6 is provided at the bottom end of the second flexible base 601. The second flexible base 601 ensures that the second mounting ring block 9 is flexibly connected to the first connecting ring block 2, thereby ensuring that the connection position of the first connecting ring block 2 and the T-shaped connecting ring block 4 can be deviated within a certain small range.

[0032] Please see Figure 1 and Figure 4In this embodiment, a rotating plate 901 is provided on the outer side of the bottom end of the second mounting ring block 9, and an L-shaped flexible base 902 is provided on the outer side of the T-shaped connecting ring block 4. The fixing ring block 8 is provided on the outer side of the L-shaped flexible base 902. By rotating the rotating plate 901, the second mounting ring block 9 is driven to rotate, thereby flexibly driving the second mounting ring block 9 to rotate up or down. The L-shaped flexible base 902 is used to ensure that the second mounting ring block 9 and the T-shaped connecting ring block 4 are flexibly connected.

[0033] When connecting the outer tube 1 and the inner tube 3, align the first connecting ring block 2 and the T-shaped connecting ring block 4, rotate the first connecting ring block 2 to drive the L-shaped ring block 201 to rotate synchronously in the L-shaped ring groove 202, and screw the first mounting ring block 6 into the first ring groove 5 so that the sealing ring block 205 is synchronously embedded in the sealing ring groove 203.

[0034] Subsequently, rotating the rotating plate 901 causes the second mounting ring block 9 to rotate upward around the fixed ring block 8. The second mounting ring block 9 continues to rotate upward and is screwed into the second ring groove 7, thus completing the connection operation between the outer tube 1 and the inner tube 3.

[0035] In this example, when a slight deviation occurs at the connection between the outer tube 1 and the inner tube 3 due to ground stress or vibration during the use of the casing, the first flexible base 204 ensures a flexible connection between the sealing ring block 205 and the first connecting ring block 2, the second flexible base 601 ensures a flexible connection between the first mounting ring block 6 and the first connecting ring block 2, and the L-shaped flexible base 902 ensures a flexible connection between the second mounting ring block 9 and the T-shaped connecting ring block 4, thereby increasing the applicability of the connection between the outer tube 1 and the inner tube 3.

[0036] Through the above steps, the outer tube 1 is fixedly connected by the first connecting ring block 2, and the inner tube 3 is fixedly connected by the T-shaped connecting ring block 4. The first connecting ring block 2 and the T-shaped connecting ring block 4 are aligned, and the first mounting ring block 6 is screwed into the first annular groove 5 by rotating the first connecting ring block 2, thus initially connecting the outer tube 1 and the inner tube 3. Subsequently, the second mounting ring block 9 is threadedly connected by the fixing ring block 8, and the second mounting ring block 9 is screwed into the second annular groove 7 to further connect and fix the outer tube 1 and the inner tube 3, thereby ensuring the stability of the sleeve connection. At the same time, the connection operation steps are simple and convenient, and the assembly and disassembly of the sleeve can be completed quickly, saving operation time.

[0037] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A sectional intermediate-depth underground heat exchanger sleeve connection structure, comprising an outer pipe (1) and an inner pipe (3), characterized in that: The utility model also includes first connecting ring block (2), T type connecting ring block (4), first ring groove (5), first installation ring block (6), second ring groove (7), fixed ring block (8) and second installation ring block (9), the bottom of outer tube (1) is provided with first connecting ring block (2), the below of first connecting ring block (2) is provided with inner tube (3), the top of inner tube (3) is provided with T type connecting ring block (4), the inside of the top of T type connecting ring block (4) is provided with first ring groove (5), the bottom of first connecting ring block (2) is provided with first installation ring block (6), the inside of the bottom of first connecting ring block (2) is provided with second ring groove (7), the outside of T type connecting ring block (4) is provided with fixed ring block (8), the outside of fixed ring block (8) is provided with second installation ring block (9).

2. The sectional type middle-deep underground heat exchanger casing connection structure according to claim 1, characterized in that: First installation ring block (6) is embedded with first ring groove (5) and is connected in screw thread, second ring groove (7) is provided with the outside of first installation ring block (6), the inside of second installation ring block (9) is connected in screw thread with the outside of fixed ring block (8), second installation ring block (9) is embedded with second ring groove (7) and is connected in screw thread.

3. The sectional type middle-deep underground heat exchanger casing connection structure according to claim 1, characterized in that: The top of first connecting ring block (2) is provided with L type ring block (201), the bottom of outer tube (1) is provided with L type ring groove (202), L type ring block (201) is embedded along L type ring groove (202) and is connected in rotation.

4. The sectional type middle-deep underground heat exchanger casing connection structure according to claim 1, characterized in that: The inside of the bottom of first connecting ring block (2) is provided with sealing ring groove (203), first installation ring block (6) is provided with the outside of sealing ring groove (203), the top of T type connecting ring block (4) is provided with first flexible substrate (204).

5. The sectional type middle-deep underground heat exchanger casing connection structure according to claim 4, characterized in that: The top of first flexible substrate (204) is provided with sealing ring block (205), sealing ring block (205) is embedded with sealing ring groove (203) and is connected, first ring groove (5) is provided with the outside of sealing ring block (205).

6. The sectional type middle-deep underground heat exchanger casing connection structure according to claim 1, characterized in that: The bottom of first connecting ring block (2) is provided with second flexible substrate (601), first installation ring block (6) is provided with the bottom of second flexible substrate (601).

7. The sectional type middle-deep underground heat exchanger casing connection structure according to claim 1, characterized in that: The outside of the bottom of second installation ring block (9) is provided with rotating plate (901), the outside of T type connecting ring block (4) is provided with L type flexible substrate (902), fixed ring block (8) is provided with the outside of L type flexible substrate (902).

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