Well lid structure of heat source well hole

Abstract

The utility model discloses a well lid structure of a heat source well hole, which is characterized in that a water pumping pipe connecting pipe and a recharge pipe connecting pipe are fixed on a well lid body, two ends of the water pumping pipe connecting pipe are fixedly connected with first flanges, and a second flange is fixed at the top end of the recharge pipe connecting pipe; therefore, the water pumping pipe and the recharge pipe of the system can be connected to the water pumping pipe connecting pipe and the recharge pipe connecting pipe through the flanges, so that the water pumping pipe and the recharge pipe are very convenient to connect and disassemble, the construction difficulty is reduced, and the construction efficiency is improved; and the well lid structure is limited through the detachable limiting device, the well lid structure does not need to be welded to the well body, and therefore a later heat source well pipeline is convenient to disassemble, the well lid structure can be repeatedly used, and later heat source well operation and pipeline maintenance are easy.

Description

Technical Field

[0001] The utility model relates to the technical field of building engineering, in particular to a manhole cover structure of a heat source manhole. Background Art

[0002] At present, spiral welded pipes are used as the well body on the outer wall of the wellbore. However, after the water pumping pipe, reinjection pipe and submersible pump enter the well through the manhole cover at the wellhead, the pipes can only be fixed to the manhole cover with a chuck or a clamp at the manhole cover position, resulting in difficulties in pipe connection and unstable connection. In the later stage of heat source well pipeline and equipment maintenance, the chuck and the clamp need to be removed as a whole, and the manhole cover part connected to the chuck and the clamp needs to be gas cut off during the later stage of pipeline and equipment maintenance because it is welded to the well body. Therefore, the manhole cover cannot be reused and there are great difficulties in the operation of the heat source well and pipeline maintenance in the later stage. Utility Model Content

[0003] In view of the above problems, the utility model provides a manhole cover structure for a heat source well, wherein the manhole cover structure is arranged on the well body of the heat source well, and is characterized in that the manhole cover structure comprises a manhole cover body, a water pumping pipe connecting pipe, a recharging pipe connecting pipe, a venting pipe and a water level detection pipe;

[0004] The middle part of the water pumping pipe connecting pipe is vertically penetrated and fixed in the manhole cover body, and both ends of the water pumping pipe connecting pipe are fixedly connected with a first flange, and the first flange is adapted to the interface flange of the water pumping pipe;

[0005] The water level detection tube is arranged on one side of the water pump connection tube, and the middle part of the water level detection tube is vertically penetrated and fixed in the manhole cover body, and the two ends of the water level detection tube are respectively fixed on the two first flanges, and the top end of the water level detection tube is flush with the upper surface of the first flange located above, and the bottom end is flush with the lower surface of the first flange located below;

[0006] The middle part of the reinjection pipe connecting pipe is vertically penetrated and fixed in the manhole cover body, the top end of the reinjection pipe connecting pipe is fixedly connected with a second flange, and the second flange is adapted to the interface flange of the reinjection pipe;

[0007] The manhole cover body is provided with an air vent, the bottom end of the air vent pipe is fixedly arranged on the manhole cover body, and the air vent pipe is communicated with the air vent.

[0008] In some of the embodiments, the limiter is in an L-shaped structure, the vertical portion of the L-shaped structure abuts against the side wall of the manhole cover body, and the horizontal portion of the L-shaped structure is fixedly disposed on the floor outside the manhole body.

[0009] In some of the embodiments, the horizontal portion of the L-shaped structure is fixed to the floor outside the well body by bolts.

[0010] In some of the embodiments, a diagonal brace is connected between the vertical portion and the horizontal portion of the L-shaped structure.

[0011] In some embodiments, the stopper is made of galvanized carbon steel.

[0012] In some of the embodiments, the middle parts of the water pumping pipe connecting pipe, the recharging pipe connecting pipe and the water level detection pipe are fully welded to the manhole cover body.

[0013] In some of the embodiments, the bottom end of the vent pipe is fully welded to the vent port.

[0014] In some of the embodiments, the outer surface of the manhole cover body is coated with anti-rust paint.

[0015] In some embodiments, bolt holes are formed on the first flange and the second flange.

[0016] Compared with the prior art, the present invention has at least one of the following advantages or beneficial effects:

[0017] 1. The utility model fixes a water pumping pipe connecting pipe and a recharging pipe connecting pipe on the manhole cover body, and both ends of the water pumping pipe connecting pipe are fixedly connected with a first flange, and a second flange is fixed at the top of the recharging pipe connecting pipe, so that the system water pumping pipe and the recharging pipe can be connected to the water pumping pipe connecting pipe and the recharging pipe connecting pipe through the flange, making the connection and disassembly of the water pumping pipe and the recharging pipe very convenient, thereby reducing the construction difficulty and improving the construction efficiency

[0018] 2. The utility model fixes the water level detection tube between the two flanges of the exhaust pipe connecting tube, so that it is only necessary to integrate the water level detection tube section between the two flanges of each exhaust pipe section and align the water level detection tube sections up and down, without the need to set up a separate water level detection tube.

[0019] 3. The utility model limits the manhole cover structure by a detachable limiter, and the manhole cover structure does not need to be welded to the well body, so that the heat source well pipeline can be easily disassembled in the later stage, the manhole cover structure can be reused, and the operation of the heat source well and pipeline maintenance in the later stage are also relatively easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and the emphasis is on illustrating the subject matter of the present invention.

[0021] Figure 1 A top view of the manhole cover structure of the heat source well in the embodiment of the utility model;

[0022] Figure 2 It is a side view of the manhole cover structure of the heat source well hole in the embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the application of the manhole cover structure of the heat source well hole in the embodiment of the utility model.

[0024] In the figure: 1 is the manhole cover body; 2 is the water pumping pipe connecting pipe; 3 is the first flange; 4 is the recharging pipe connecting pipe; 5 is the second flange; 6 is the vent pipe; 7 is the water level detection pipe; 8 is the weld; 9 is the well body; 10 is the floor; 11 is the limiter; 12 is the bolt. DETAILED DESCRIPTION

[0025] The present invention is further described below with reference to the accompanying drawings and specific embodiments, but is not intended to be limiting of the present invention:

[0026] like Figures 1 to 3As shown, the present embodiment discloses a manhole cover structure for a heat source wellbore, the manhole cover structure is arranged on a well body 9 of the heat source wellbore to seal the wellhead of the well body 9, specifically, the manhole cover structure comprises a manhole cover body 1, a water pumping pipe connecting pipe 2, a recharging pipe connecting pipe 4, a venting pipe 6 and a water level detection pipe 7; the middle part of the water pumping pipe connecting pipe 2 is vertically penetrated and fixed in the manhole cover body 1, and both ends of the water pumping pipe connecting pipe 2 are fixedly connected with a first flange 3 (the two ends of the water pumping pipe connecting pipe 2 are respectively located above and below the manhole cover body 1), and the first flange 3 is adapted to the interface flange of the system water pumping pipe; the water level detection pipe 7 is arranged on one side of the water pumping pipe connecting pipe 2, and the middle part of the water level detection pipe 7 is vertically penetrated and fixed in the manhole cover body In the manhole cover body 1, the two ends of the water level detection tube 7 are respectively welded and fixed on the two first flanges 3 (specifically, a notch is correspondingly opened on the first flange 3, and the end of the water level detection tube 7 is arranged in the notch and is fully welded to the side wall of the notch, wherein 8 is a weld), and the top end of the water level detection tube 7 is flush with the upper surface of the first flange 3 located above, and the bottom end of the water level detection tube 7 is flush with the lower surface of the first flange 3 located below; the middle part of the reinjection pipe connecting tube 4 is vertically penetrated and fixed in the manhole cover body 1 (the two ends of the water level detection tube 7 are respectively located above and below the manhole cover body 1), the top end of the reinjection pipe connecting tube 4 is fixedly connected with the second flange 5, and the second flange 5 is connected to the system reinjection pipe The interface flange is adapted; a vent is provided on the manhole cover body 1, and the bottom end of the vent pipe 6 is fixedly arranged on the manhole cover body 1, and the vent pipe 6 is communicated with the vent; when this manhole cover structure is used to close the wellhead, the system water pumping pipe can be connected to the water pumping pipe connecting pipe 2 fixed on the manhole cover body 1 through the first flange 3 (the water pumping pipe section located in the wellbore is connected to the first flange 3 located below the water pumping pipe connecting pipe 2, and the water pumping pipe section located outside the wellbore is connected to the first flange 3 located above the water pumping pipe connecting pipe 2), and the system reinjection pipe can be connected to the reinjection pipe connecting pipe 4 fixed on the manhole cover body 1 through the second flange 5 (because the reinjection pipe of the heat source well is shallow, only the reinjection pipe section outside the wellbore needs to be connected It can be fixedly connected with the second flange 5 on the reinjection pipe connecting pipe 4), and a water level detection tube is provided on the flange of the pumping pipe in the wellbore, that is, the water level detection tube is welded and fixed with the pumping pipe, and can be placed in the wellbore together with the pumping pipe, so as to facilitate the installation of the water level detector in the later stage (the water level detector is composed of a probe and a 6-core control cable, so that after the upper and lower water level detection tubes correspond, the water level detector can be placed in the well for water level detection through the water level detection tube 7 on the manhole cover body 1), and the vent pipe 6 plays the role of removing air. After the pipeline is connected to the manhole cover structure, the manhole cover can be directly placed on the well body 9 of the heat source well; the pipeline connection and disassembly during construction are also very convenient, thereby speeding up the construction speed.

[0027] In the embodiment of the present utility model, Figure 3As shown, limiters 11 are provided on the front, back, left, and right sides of the manhole cover body 1 to limit the manhole cover structure in the four directions, thereby preventing the pipeline from being displaced during the operation of the system; specifically, the limiter 11 is in an L-shaped structure, and the vertical portion of the L-shaped structure abuts against the side wall of the manhole cover body 1, and the horizontal portion of the L-shaped structure is fixedly arranged on the floor 10 outside the well body 9, and the horizontal portion of the L-shaped structure is fixed to the floor 10 outside the well body 9 by bolts 12, thereby making the installation and disassembly of the limiter 11 very convenient; an oblique brace is connected between the vertical and horizontal portions of the L-shaped structure, thereby making the structure of the limiter 11 more stable; the material of the limiter 11 is galvanized carbon steel (the outer surface of ordinary carbon steel is hot-dip galvanized for corrosion protection). The utility model provides limiters 11 on the four sides of the manhole cover body 1, which can be detachably provided. The manhole cover does not need to be welded to the well body 9, so that the heat source well pipeline can be easily disassembled in the later stage, the manhole cover can be reused, and the operation of the heat source well and the maintenance and inspection of the pipeline in the later stage are also relatively easy, which greatly reduces the maintenance and construction costs and construction difficulty.

[0028] In this embodiment, the middle parts of the water pumping pipe connecting pipe 2, the recharging pipe connecting pipe 4 and the water level detection pipe 7 are fully welded to the manhole cover body 1, wherein 8 is a weld; the bottom end of the vent pipe 6 is fully welded to the vent port.

[0029] In this embodiment, the outer surface of the manhole cover body 1 is coated with anti-rust paint, so as to prevent the manhole cover from rusting.

[0030] In this embodiment, bolt holes are provided on the first flange 3 and the second flange 5, so that the air extraction pipe and the recharging pipe can be connected by bolts, which is convenient and quick.

[0031] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present utility model, and will not be described in detail here.

[0032] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific implementation methods, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the utility model without departing from the scope of the technical solution of the utility model, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A manhole cover structure for a heat source well, the manhole cover structure being arranged on a well body of the heat source well, characterized in that: The manhole cover structure includes a manhole cover body, a water pumping pipe connecting pipe, a recharging pipe connecting pipe, a venting pipe and a water level detection pipe; The middle part of the water pumping pipe connecting pipe is vertically penetrated and fixed in the manhole cover body, and both ends of the water pumping pipe connecting pipe are fixedly connected with a first flange, and the first flange is adapted to the interface flange of the water pumping pipe; The water level detection tube is arranged on one side of the water pump connection tube, and the middle part of the water level detection tube is vertically penetrated and fixed in the manhole cover body, and the two ends of the water level detection tube are respectively fixed on the two first flanges, and the top end of the water level detection tube is flush with the upper surface of the first flange located above, and the bottom end is flush with the lower surface of the first flange located below; The middle part of the reinjection pipe connecting pipe is vertically penetrated and fixed in the manhole cover body, the top end of the reinjection pipe connecting pipe is fixedly connected with a second flange, and the second flange is adapted to the interface flange of the reinjection pipe; The manhole cover body is provided with an air vent, the bottom end of the air vent pipe is fixedly arranged on the manhole cover body, and the air vent pipe is communicated with the air vent.

2. The heat source wellbore cover structure according to claim 1, characterized in that: Limiters are arranged at the front, back, left and right sides of the manhole cover body.

3. The heat source wellbore cover structure according to claim 2, characterized in that: The limiter is in an L-shaped structure, the vertical portion of the L-shaped structure abuts against the side wall of the manhole cover body, and the horizontal portion of the L-shaped structure is fixedly arranged on the floor outside the manhole body.

4. The heat source wellbore cover structure according to claim 3, characterized in that: The horizontal part of the L-shaped structure is fixed to the floor outside the well body by bolts.

5. The heat source wellbore cover structure according to claim 3, characterized in that: A diagonal brace is connected between the vertical part and the horizontal part of the L-shaped structure.

6. The heat source wellbore cover structure according to claim 2, characterized in that: The material of the limiter is galvanized carbon steel.

7. The heat source wellbore cover structure according to claim 1, characterized in that: The middle parts of the water pumping pipe connecting pipe, the recharging pipe connecting pipe and the water level detection pipe are fully connected to the manhole cover body by welding.

8. The heat source well cover structure according to claim 1, characterized in that: The bottom end of the vent pipe is fully welded to the vent port.

9. The heat source wellbore cover structure according to claim 1, characterized in that: The outer surface of the manhole cover body is coated with anti-rust paint.

10. The heat source wellbore cover structure according to claim 1, characterized in that: Bolt holes are provided on the first flange and the second flange.

Images