CN216664244U - Deep geothermal pipe well mouth waterproof casing structure penetrating through structural bottom plate - Google Patents

Abstract

The utility model relates to a deep geothermal pipe well wellhead waterproof casing structure penetrating through a structural bottom plate, wherein a pipe well (1) penetrates through the bottom plate (8), a casing pipe (2) is arranged between the pipe well (1) and the bottom plate (8), the lower end surface of the casing pipe (2) is flush with the bottom surface of the bottom plate (8), a gap is reserved between the casing pipe (2) and the pipe well (1), a plain concrete layer (9) covers the top surface of the bottom plate (8), and a concrete cushion layer (19) is arranged below the bottom plate (8). The utility model completely eliminates the hidden danger of water seepage of the deep geothermal well pipe under the condition of long-term large temperature difference change through a multi-channel waterproof design.

Description

Deep geothermal pipe well mouth waterproof casing structure penetrating through structural bottom plate

Technical Field

The utility model relates to the field of constructional engineering, in particular to a deep geothermal pipe well mouth waterproof sleeve structure penetrating through a structural bottom plate.

Background

The deep geothermal energy is green clean energy, and a deep geothermal well is required to be arranged for utilizing the deep geothermal energy. Under the condition of scarce urban land, the deep geothermal well is generally arranged in a building underground chamber or an independent deep geothermal well chamber is arranged underground. This requires deep geothermal well pipes to be run through the structural floor. When carrying out the use of geothermal well, in order to avoid the risk of percolating water, can set up the sleeve pipe around the tube well of geothermal well and protect to set up waterproof construction and come the infiltration of separation external moisture on the sleeve.

Current patent number CN202020622025.6 provides a tube well sleeve pipe wears foundation plate's waterproof construction, and foundation plate is located the bed course top, and the tube well passes foundation plate and bed course, and the tube well outside, waterproof construction are located to the sleeve pipe cover: the water stop plate is arranged in the foundation bottom plate along the horizontal direction and sleeved on the outer wall of the sleeve; waterproofing membrane, waterproofing membrane locate between soleplate and bed course, and waterproofing membrane's binding off extends to the lower surface of stagnant water board along sheathed tube outer wall. According to the waterproof structure for the pipe well casing penetrating through the foundation slab, which is disclosed by the utility model, the water stop plate is arranged, so that a water seepage path can be effectively prolonged when a gap is generated between the casing and the foundation slab, and the risk of water seepage is reduced. Therefore, a wellhead sealing structure of the geothermal well is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a sealing waterproof casing structure of a wellhead of a geothermal well to solve the problems.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a wear waterproof sleeve structure of deep geothermal pipe well head of structure bottom plate, the pipe well passes including the bottom plate, set up the sleeve pipe between pipe well and the bottom plate, terminal surface and bottom plate bottom surface parallel and level under sleeve pipe (2), leave the clearance between sleeve pipe and the pipe well, it has plain concrete layer to cover above the bottom plate, it has the concrete cushion to cover below, a serial communication port, be equipped with first seal ring at the top surface of bottom plate, with the sleeve pipe welding, be equipped with the second seal ring in the centre of bottom plate, with the sleeve pipe welding, with sleeve pipe (2) welding, it sets up first waterproof layer to encircle in the bottom surface contact tube well part of bottom plate (8), cover the subregion of pipe well and bottom plate bottom surface.

(III) advantageous effects

The utility model completely eliminates the hidden trouble of water seepage after the pipeline opening is used for a long time through a plurality of waterproof designs.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

fig. 2 is an enlarged view of a portion of the flange seal according to the present invention.

In the figure: 1. a pipe well; 2. a sleeve; 3. a first water stop ring; 4. a second water stop ring; 5. a water stop sleeve ring; 6. a first waterproof layer; 7. a second waterproof layer; 8. a base plate; 9. a plain concrete layer; 10. a third water stop ring; 16. a water guide slope surface; 19. a concrete pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Please refer to fig. 1, which shows a sealing structure with a tube well 1 penetrating through a structural bottom plate or a bottom plate 8 for short, comprising a bottom plate 8, wherein a sleeve 2 is arranged between the tube well 1 and the bottom plate 8, the lower end surface of the sleeve 2 is flush with the bottom surface of the bottom plate 8, a gap is left between the sleeve 2 and the tube well 1, a plain concrete layer 9 covers the bottom plate 8, and a concrete cushion layer 19 covers the lower surface of the bottom plate 8, and the sealing structure is characterized in that a first water stop ring 3 is arranged on the top surface of the bottom plate 8 and is welded with the sleeve 2, a second water stop ring 4 is arranged in the middle of the bottom plate 8 and is welded with the sleeve 2, a third water stop ring 10 is arranged on the bottom surface of the bottom plate 8 and is abutted against the tube well 1, a water stop ring 5 is further arranged at the lower end of the gap between the sleeve 2 and the tube well 1, and the water stop ring 5 is welded with the third water stop ring 10 to form a flange sealing element. As a variant, the flange seal may be an integrally formed metal piece.

Preferably, a water deflector 16 may be provided on the top surface of the layer of plain concrete 9 surrounding the pipe shaft 1, and the water deflector 16, covering the upper end surface of the casing 2, may be formed by the plain concrete 9 or may be a separate component, such as a metal piece which is intimately joined to the pipe shaft. In the case of easy maintenance, the material may be made of a polymer material having elasticity, such as a rubber gasket or a silicone gasket. Is a hollow round table body with an upward inclined plane

Referring to fig. 2 in combination, the flange seal is further provided with an inner and an outer waterproof layer on both sides, which may be formed using waterproof roll material, wherein a first waterproof layer 6 is provided on a side of the flange seal facing the pipe well and the concrete pad, and a second waterproof layer 7 is provided on a side of the flange seal facing the bottom plate 8. The corresponding edges of the first waterproof layer 6 and the second waterproof layer 7 are hermetically connected, and the flange sealing element is completely wrapped.

In fig. 1 it is shown that at several points in the hole between the casing and the well, a conventional sealing material such as hemp oil 11 may be applied, the top of the hole being closed with a sealing grease 12 and the rest of the hole being filled with asbestos cement.

It is easy to understand that in the present invention, the first water stop ring 3 completely prevents water from penetrating into the bottom plate 8 from the outside of the casing, the second water stop ring 4 is used to intercept water penetrating into the bottom plate due to the crack of the bottom plate, and the flange sealing member formed by the third water stop ring 10 and the water stop collar 5 compacts the first waterproof layer to prevent it from deforming due to large temperature difference and reducing waterproofness. The plain concrete layer and the water guide slope surface are arranged on the bottom plate, so that the waterproof effect is optimized.

The waterproof sleeve structure is particularly suitable for deep geothermal well heads, and can effectively solve the problem of waterproof failure caused by large temperature difference change of a pipe well.

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

Claims (6)

1. The utility model provides a wear waterproof sleeve structure of deep geothermal pipe well head of structure bottom plate, bottom plate (8) are passed in tube well (1), set up sleeve pipe (2) between tube well (1) and bottom plate (8), terminal surface and bottom plate (8) bottom surface parallel and level under sleeve pipe (2), leave the clearance between sleeve pipe (2) and tube well (1), it has plain concrete layer (9) to cover above bottom plate (8), establish concrete cushion (19) below, a serial communication port, top surface at bottom plate (8) is equipped with first seal ring (3), weld with sleeve pipe (2), be equipped with second seal ring (4) in the centre of bottom plate (8), weld with sleeve pipe (2), it sets up first waterproof layer (6) to encircle in bottom surface contact tube well (1) of bottom plate (8), cover the subregion of tube well (1) and bottom plate (8) bottom surface.

2. The deep geothermal well wellhead waterproof casing structure of claim 1, wherein: further comprising a flange seal pressing against said first waterproof layer (6).

3. The deep geothermal well head waterproof casing structure of claim 2, wherein: a second water barrier layer (7) is also included, covering the flange seal.

4. A deep geothermal well head waterproof jacket structure according to claim 3, wherein the corresponding edges of the first waterproof layer (6) and the second waterproof layer (7) are sealingly connected.

5. The deep geothermal well head waterproof casing structure of claim 3, wherein: the flange sealing element is formed by welding a third water stop ring (10) and a water stop lantern ring (5).

6. The deep geothermal well wellhead waterproof casing structure of claim 1, wherein: the top surface of the plain concrete layer (9) is fixedly connected with a water guide slope surface (16), and the water guide slope surface (16) is a hollow round table body with an upward inclined surface.

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