Wellhead protective cover

Abstract

The utility model provides a wellhead protective cover, and particularly relates to the technical field of geothermal wellhead protection, which comprises a base, the bottom of the base is fixedly connected with a protective pipe, the wellhead protective cover and a pull-out handle, a well lid is placed in a placing groove to enable a limiting block to coincide with a limiting groove, the limiting block is placed in the limiting groove, the well lid is rotated, the limiting block is clamped in the limiting groove, and the well lid is pulled out. After a limiting block is clamped in a limiting groove, a handle is pressed downwards, the handle makes contact with a fixing block, through the arrangement of an inclined face on the fixing block, a limiting rod on the fixing block can be pushed to slide in a limiting hole, a spring is compressed, one end of the limiting rod is inserted into a pin hole, and the well lid is prevented from rotating; when the well lid needs to be opened, the well lid can be rotationally opened only by pulling out the handle, rebounding the spring and separating the limiting rod from the pin hole, and when the well lid is not installed, the spring is in a standing state, one end of the limiting rod is located in the limiting hole, and therefore installation of the well lid cannot be affected.

Description

Technical Field

[0001] The utility model relates to the technical field of geothermal wellhead protection, in particular to a wellhead protection cover. Background Art

[0002] Generally in geothermal wells, some scientific research institutions will monitor the geothermal wells for research. There is a protection device at the wellhead to protect the geothermal well and prevent external sundries from falling into the geothermal well. When the wellhead of the geothermal well is located on a traffic road, the protection device can also bear a large weight, allowing vehicles to drive over it without being deformed or damaged. However, when vehicles drive on it, it is easy to cause the manhole cover to shift and warp, affecting its use and safety. Content of the Utility Model

[0003] The purpose of the utility model is to provide a wellhead protection cover to solve the problem that the vehicle can drive over the manhole cover without being deformed or damaged, but when the vehicle drives on it, it is easy to cause the manhole cover to shift and warp, affecting its use and safety as mentioned in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: It includes a base. A protection pipe is fixedly connected to the bottom of the base. Pouring holes are penetrated and opened on the outer side of the protection pipe. An installation mechanism is arranged above the base. The installation mechanism includes a placement groove, a limit groove, a manhole cover, a through groove, a storage groove, a handle, a limit block and a pin hole. The placement groove is opened on the top of the base. A limit groove is opened on the inner surface of the placement groove. The manhole cover is placed inside the limit groove. A through groove is penetrated and opened on the top of the manhole cover. A storage groove is opened on the top of the manhole cover. A handle is slidably penetrated and connected to the top of the manhole cover. A limit block is fixedly connected to the bottom of the manhole cover. A pin hole is opened on one side of the limit block. A limit mechanism is arranged on the inner cavity side wall of the base.

[0005] Preferably, there are six pouring holes, and the pouring holes are equidistantly distributed on the outer side of the protection pipe.

[0006] Preferably, the inner wall of the placement groove fits with the outer wall of the manhole cover, and there are four through grooves.

[0007] Preferably, the outer wall of the limit block fits with the inner wall of the limit groove.

[0008] Preferably, the limit mechanism includes a limit hole, a limit rod, a fixing plate, a spring and a fixing block. A limit hole is opened on the inner cavity side wall of the base. The limit rod is slidably connected to the inside of the limit hole. The fixing plate is fixedly connected to the outer side of the limit rod. A spring is fixedly connected to one side of the fixing plate. One end of the limit rod is fixedly connected to the fixing block.

[0009] Preferably, the inner wall of the limiting hole fits with the outer wall of the limiting rod. The spring is sleeved outside the limiting rod. One end of the spring is fixedly connected to the inner cavity side wall of the base. The outer wall of one end of the limiting rod is adapted to the inner wall of the pin hole.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: For this wellhead protection cover, insert the protection pipe on the base into the geothermal wellhead, then pour concrete into the pouring hole for reinforcement. After that, pull out the handle, place the well cover into the placement groove, so that the limiting block coincides with the limiting groove, put the limiting block into the limiting groove, and then rotate the well cover through the handle to lock the limiting block in the limiting groove, thereby fixing the well cover. In this way, it can prevent the vehicle from driving on the well cover and the well cover from shifting and tilting. After the limiting block is locked in the limiting groove, the position of the well cover is fixed. Then press down the handle, the handle contacts the fixed block. Through the inclined surface setting on the fixed block, it will push the limiting rod on the fixed block to slide in the limiting hole and compress the spring, so that one end of the limiting rod is inserted into the pin hole, better fixing the well cover and preventing the well cover from rotating. When it is necessary to open the well cover, just pull out the handle, the spring rebounds, and the limiting rod disengages from the pin hole, then the well cover can be rotated and opened. When the well cover is not installed, the spring is in a static state, and one end of the limiting rod is in the limiting hole, which will not affect the installation of the well cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a structural schematic diagram of the appearance of the present utility model;

[0012] Figure 2 is a structural schematic diagram of the cooperation between the well cover and the through groove of the present utility model;

[0013] Figure 3 is a structural schematic diagram of the limiting mechanism of the present utility model;

[0014] Figure 4 is a structural schematic diagram of the cooperation between the handle and the fixed block of the present utility model.

[0015] In the figure: 1. Base; 2. Protection pipe; 3. Pouring hole; 4. Installation mechanism; 401. Placement groove; 402. Limiting groove; 403. Well cover; 404. Through groove; 405. Storage groove; 406. Handle; 407. Limiting block; 408. Pin hole; 5. Limiting mechanism; 501. Limiting hole; 502. Limiting rod; 503. Fixed plate; 504. Spring; 505. Fixed block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0017] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions that can be implemented in this application. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that this application can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in this application.

[0018] Embodiment

[0019] Please refer to Figures 1-4 , a wellhead protection cover of the present utility model: including a base 1, a protection pipe 2 is fixedly connected to the bottom of the base 1, a pouring hole 3 is penetrated and opened on the outer side of the protection pipe 2, an installation mechanism 4 is arranged above the base 1, and the installation mechanism 4 includes a placement groove 401, a limit groove 402, a manhole cover 403, a through groove 404, a storage groove 405, a handle 406, a limit block 407 and a pin hole 408. The placement groove 401 is opened on the top of the base 1, a limit groove 402 is opened on the inner surface of the placement groove 401, the manhole cover 403 is placed inside the limit groove 402, a through groove 404 is penetrated and opened on the top of the manhole cover 403, a storage groove 405 is opened on the top of the manhole cover 403, a handle 406 is slidably penetrated and connected to the top of the manhole cover 403, a limit block 407 is fixedly connected to the bottom of the manhole cover 403, and a pin hole 408 is opened on one side of the limit block 407. A limit mechanism 5 is arranged on the inner cavity side wall of the base 1. When in use, the protection pipe 2 on the base 1 is inserted into the geothermal wellhead, and then concrete is injected into the pouring hole 3 for reinforcement. Then, the handle 406 is pulled out, the manhole cover 403 is placed in the placement groove 401, so that the limit block 407 coincides with the limit groove 402, the limit block 407 is placed in the limit groove 402, and then the manhole cover 403 is rotated through the handle 406 to lock the limit block 407 in the limit groove 402, thereby fixing the manhole cover 403. In this way, it can prevent the vehicle from driving on the manhole cover 403 and the manhole cover 403 from shifting and tilting.

[0020] In order to facilitate the fixation of the protection pipe 2, six pouring holes 3 are provided, and the pouring holes 3 are evenly distributed on the outer side of the protection pipe 2.

[0021] In order to facilitate the fixation of the manhole cover 403, the inner wall of the placement groove 401 fits with the outer wall of the manhole cover 403, and four through grooves 404 are provided.

[0022] To facilitate the fixing of the manhole cover 403, the outer wall of the limiting block 407 is fitted with the inner wall of the limiting groove 402.

[0023] To facilitate the fixing of the manhole cover 403, the limiting mechanism 5 includes a limiting hole 501, a limiting rod 502, a fixing plate 503, a spring 504 and a fixing block 505. The inner cavity side wall of the base 1 is provided with the limiting hole 501. The inner side of the limiting hole 501 is slidably connected with the limiting rod 502. The outer side of the limiting rod 502 is fixedly connected with the fixing plate 503. One side of the fixing plate 503 is fixedly connected with the spring 504. One end of the limiting rod 502 is fixedly connected with the fixing block 505. After the limiting block 407 is stuck in the limiting groove 402, the position of the manhole cover 403 is fixed. Then, the handle 406 is pressed down. The handle 406 contacts the fixing block 505. Due to the inclined surface provided on the fixing block 505, the limiting rod 502 on the fixing block 505 is pushed to slide in the limiting hole 501, and the spring 504 is compressed, so that one end of the limiting rod 502 is inserted into the pin hole 408, better fixing the manhole cover 403 and preventing the manhole cover 403 from rotating. When the manhole cover 403 needs to be opened, only the handle 406 needs to be pulled out. The spring 504 rebounds, and the limiting rod 502 disengages from the pin hole 408, and the manhole cover 403 can be rotated and opened. When the manhole cover 403 is not installed, the spring 504 is in a static state, and one end of the limiting rod 502 is in the limiting hole 501, which will not affect the installation of the manhole cover 403.

[0024] To facilitate the fixing of the manhole cover 403, the inner wall of the limiting hole 501 is fitted with the outer wall of the limiting rod 502. The spring 504 is sleeved on the outer side of the limiting rod 502. One end of the spring 504 is fixedly connected with the inner cavity side wall of the base 1. The outer wall of one end of the limiting rod 502 is adapted to the inner wall of the pin hole 408.

[0025] Working principle: When in use, insert the protective pipe 2 on the base 1 into the geothermal wellhead, then pour concrete into the pouring hole 3 for reinforcement. After that, pull out the handle 406, place the manhole cover 403 into the placement groove 401, so that the limit block 407 coincides with the limit groove 402. Put the limit block 407 into the limit groove 402, and then rotate the manhole cover 403 through the handle 406 to lock the limit block 407 in the limit groove 402, thereby fixing the manhole cover 403. This can prevent the vehicle from driving on the manhole cover 403 and the manhole cover 403 from shifting and tilting. After the limit block 407 is locked in the limit groove 402, the position of the manhole cover 403 is fixed. Then press down the handle 406. When the handle 406 contacts the fixed block 505, due to the inclined surface setting on the fixed block 505, it will push the limit rod 502 on the fixed block 505 to slide in the limit hole 501 and compress the spring 504, so that one end of the limit rod 502 is inserted into the pin hole 408 to better fix the manhole cover 403 and prevent the manhole cover 403 from rotating. When it is necessary to open the manhole cover 403, just pull out the handle 406, the spring 504 rebounds, and the limit rod 502 disengages from the pin hole 408, then the manhole cover 403 can be rotated and opened. When the manhole cover 403 is not installed, the spring 504 is in a static state, and one end of the limit rod 502 is in the limit hole 501, which will not affect the installation of the manhole cover 403.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wellhead protection cover, comprising a base (1), characterized in that: A protective tube (2) is fixedly connected to the bottom of the base (1). Pouring holes (3) are formed through the outer side of the protective tube (2). An installation mechanism (4) is arranged above the base (1). The installation mechanism (4) includes a placement groove (401), a limiting groove (402), a manhole cover (403), a through groove (404), a storage groove (405), a handle (406), a limiting block (407) and a pin hole (408). The placement groove (401) is formed in the top of the base (1). The inner surface of the placement groove (401) is provided with the limiting groove (402). The manhole cover (403) is placed inside the limiting groove (402). A through groove (404) is formed through the top of the manhole cover (403). A storage groove (405) is formed in the top of the manhole cover (403). The handle (406) is slidably connected through the top of the manhole cover (403). The limiting block (407) is fixedly connected to the bottom of the manhole cover (403). A pin hole (408) is formed in one side of the limiting block (407). A limiting mechanism (5) is arranged on the inner cavity side wall of the base (1).

2. The wellhead protection cover according to claim 1, wherein: Six pouring holes (3) are provided, and the pouring holes (3) are equally spaced on the outer side of the protective tube (2).

3. The wellhead protection cover according to claim 1, characterized in that: The inner wall of the placement groove (401) fits with the outer wall of the manhole cover (403), and four through grooves (404) are provided.

4. A wellhead protection cover according to claim 1, characterized in that: The outer wall of the limiting block (407) fits with the inner wall of the limiting groove (402).

5. The wellhead protection cover according to claim 1, characterized in that: The limiting mechanism (5) includes a limiting hole (501), a limiting rod (502), a fixing plate (503), a spring (504) and a fixing block (505). The limiting hole (501) is formed in the inner cavity side wall of the base (1). The inner side of the limiting hole (501) is slidably connected with the limiting rod (502). The outer side of the limiting rod (502) is fixedly connected with the fixing plate (503). A spring (504) is fixedly connected to one side of the fixing plate (503). One end of the limiting rod (502) is fixedly connected with the fixing block (505).

6. The wellhead protection cover according to claim 5, characterized in that: The inner wall of the limiting hole (501) fits with the outer wall of the limiting rod (502), and the spring (504) is sleeved on the outer side of the limiting rod (502), and one end of the spring (504) is fixedly connected with the inner cavity side wall of the base (1). One end outer wall of the limiting rod (502) is adapted to the inner wall of the pin hole (408).

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