Ground gas extraction well mouth anti-falling suspension fixing device

Abstract

The utility model discloses a ground gas mining well mouth anti -falling suspension fixing device, including two open casing, still include: fixed assembly for avoiding three open casing to fall, the fixed assembly, including three open casing, joint A, joint B and bolt, a plurality of joint A and joint B are fixedly connected on three open casing and two open casing respectively, the bolt is inserted in the through -hole of joint A, the bolt is connected with joint B screw thread, the utility model discloses, can effectively avoid three open casing to fall.

Description

Technical Field

[0001] This utility model belongs to the field of mining well construction technology, and in particular relates to a ground gas mining wellhead anti-fall suspension and fixing device. Background Technology

[0002] In the construction of surface gas extraction wells, the current construction of surface gas extraction wells is generally a three-section structure. The first and second sections of the casing are cemented, while the third section casing, as the extraction pipe for gas transport, cannot be fixed by conventional cementing methods. It is usually supported by soil layers. However, due to the complex geological conditions of underground coal mining, if there are geological structures such as faults, causing the soil layers to move upward or collapse, the third section casing may be in or even below the coal seam. This may cause the casing to fall continuously during coal mining, resulting in safety accidents. A structure that can prevent the fall of the third section casing is proposed. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a ground gas mining wellhead anti-fall suspension and fixing device, which solves the above-mentioned problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a ground gas mining wellhead anti-fall suspension and fixing device, comprising a two-section casing and a fixing component for preventing the three-section casing from falling; the fixing component comprises a three-section casing, connector A, connector B, and bolts, wherein multiple connectors A and B are respectively fixedly connected to the three-section casing and the two-section casing, the bolts are inserted into the through holes of connector A, and the bolts are threadedly connected to connector B.

[0005] Beneficial effects

[0006] This utility model provides a wellhead anti-fall suspension and fixing device for surface gas mining wells, which has the following advantages compared with the prior art:

[0007] When the second-section sleeve is covered with soil, the user starts motor A. The lead screw fixedly connected to the output shaft of motor A begins to rotate at a constant speed, causing the threaded sliding cylinder on the lead screw to slide synchronously. This pushes the ring fixedly connected to the cylinder upwards, allowing the ring to break through the soil layer via a cone fixedly connected to it. The cone's conical shape effectively reduces resistance during sliding, allowing the ring to extend out of the soil. The user then rotates the cone to remove it from the ring. The cone and ring together shield the top of the second-section sleeve, preventing soil clods from falling into it and creating protrusions at the connection point with the third-section sleeve, thus affecting the connection. The user then... The first sleeve is placed into the ring sleeve and positioned on the second sleeve, aligning their centerlines. Connector A should be aligned with connector B so that the bolt can pass through both connectors. The user then connects connectors A and B with bolts. At this point, the third sleeve is connected to the second sleeve, preventing the third sleeve from falling due to soil collapse. The user then starts the motor, causing the right-hand screw fixed to its output shaft to rotate synchronously, driving the left-hand screw fixed to it to rotate at a constant speed. The two threaded slide plates on these slide towards both sides of the connecting frame, allowing the plug to be pulled out of the groove and disengaged from the second sleeve. This facilitates the removal of the connecting frame and ring sleeve from the second sleeve and the third sleeve, preventing disruption to subsequent construction. Attached Figure Description

[0008] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0009] Figure 2 This is a cross-sectional schematic diagram of the overall structure of this utility model.

[0010] Figure 3 This is an enlarged cross-sectional view of the connection structure of this utility model.

[0011] Figure 4 This is a schematic cross-sectional view of the lead screw structure of this utility model.

[0012] Figure reference numerals: 101, two-piece sleeve, 2, fixing component, 201, connector A, 202, connector B, 203, bolt, 204, ring, 205, 206, cone, 207, connecting bracket, 208, lead screw, 209, slide, 301, groove, 302, plug, 303, slide plate, 304, left-hand lead screw, 305, right-hand lead screw, 306, motor, 307. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0014] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0015] Please see Figures 1-4 The present invention provides an embodiment of a ground gas mining wellhead anti-fall suspension and fixing device, comprising a two-section casing 101, and further comprising:

[0016] Fixing component 2 is used to prevent the three-section sleeve from falling;

[0017] The fixing component 2 includes a three-sleeve 201, a connector A202, a connector B203, and a bolt 204. Multiple connectors A202 and connectors B203 are respectively fixedly connected to the three-sleeve 201 and the two-sleeve 101. The bolt 204 is inserted into the through hole of connector A202, and the bolt 204 is threadedly connected to connector B203.

[0018] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific three-sleeve 201 and two-sleeve 101 described in the above embodiments. For example, the three-sleeve 201 and two-sleeve 101 can adopt other forms of connection, such as welding. The purpose of this arrangement is to facilitate the increase of the stability of the connection between the three-sleeve 201 and two-sleeve 101.

[0019] Specifically, the ring 205 is sleeved on the outside of the two-section sleeve 101, and the top of the ring 205 is threaded with a cone 207, which is used to break the soil clods buried on the two-section sleeve 101.

[0020] Regarding the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific cone 207 described in the above embodiments. For example, the cone 207 is made of a material with a smooth surface. The purpose of this setting is to facilitate the rapid sliding of soil clods and avoid soil clod residue on them.

[0021] Specifically, a plurality of sliding cylinders 301 are symmetrically fixedly connected to the inner wall of the ring 205. The sliding cylinders 301 are threadedly connected to the lead screw 209. The lead screw 209 is rotatably connected to the connecting frame 208, and the sliding cylinders 301 are slidably connected to the connecting frame 208.

[0022] Regarding the above examples, those skilled in the art should understand that the implementation of the above technical solutions is not limited to the specific ring 205 and connecting frame 208 described in the above embodiments. For example, a rubber cylinder can be provided between the ring 205 and the connecting frame 208. The upper and lower sides of the rubber cylinder are fixedly connected to the ring 205 and the connecting frame 208, respectively. The purpose of this arrangement is to facilitate the sealing of the gap between the ring 205 and the connecting frame 208 by the rubber cylinder during the rising process, thereby preventing soil clods from sliding onto the connecting frame 208 after the ring 205 rises, which would make it impossible to remove the connecting frame 208 later.

[0023] Specifically, one end of the lead screw 209 is fixedly connected to the output shaft of the motor A206, and the motor A206 is fixedly connected to the connecting frame 208.

[0024] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific motor A206 described in the above embodiments. For example, the motor A206 should be a motor with multiple adjustable speeds. The purpose of this setting is to facilitate the adjustment of the rotation speed of the lead screw 209, thereby adjusting the upward sliding speed of the ring 205.

[0025] Specifically, a plurality of grooves 302 are symmetrically provided on the outer wall of the double-opening sleeve 101, and plugs 303 are inserted into the plurality of grooves 302 for fixing the connecting frame 208 on the double-opening sleeve 101.

[0026] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific plug 303 described in the above embodiments. For example, the plug 303 is made of high-hardness steel, and its connection with the slide plate 304 should be further hardened and reinforced. The purpose of this setting is to prevent it from breaking under stress, which would cause the connecting frame 208 to detach from the two-opening sleeve 101.

[0027] Specifically, the plug 303 is fixedly connected to the slide plate 304, the slide plate 304 is slidably connected to the connecting frame 208, and the two slide plates 304 are respectively threadedly connected to the left-hand lead screw 305 and the right-hand lead screw 306.

[0028] For the above examples, those skilled in the art should know that when implementing the above technical solutions, it is not limited to the specific left-hand lead screw 305 and right-hand lead screw 306 described in the above embodiments. For example, the left-hand lead screw 305 and right-hand lead screw 306 should be lead screws with self-locking effect. The purpose of this setting is to facilitate the increase of the limiting effect on the slide plate 304 with threaded connection on it through this setting.

[0029] Specifically, the left-hand lead screw 305 is rotatably connected to the connecting frame 208, the left-hand lead screw 305 is fixedly connected to the right-hand lead screw 306, one end of the right-hand lead screw 306 is fixedly connected to the output shaft of the motor 307, and the motor 307 is fixedly connected to the connecting frame 208.

[0030] In this embodiment of the invention, when the double-sleeved sleeve 101 is covered with soil, the user starts the motor A206. At this time, the lead screw 209 fixedly connected to the output shaft of the motor A206 begins to rotate at a constant speed, causing the sliding cylinder 301 threadedly connected to the lead screw 209 to slide synchronously, pushing the ring 205 fixedly connected to it to slide upwards. The ring 205 can then break through the soil layer through the cone 207 fixedly connected to it, and because the cone 207 is cone-shaped, it can... This effectively reduces the resistance encountered during its sliding process, allowing the ring 205 to extend out of the soil. The user then rotates the cone 207 to remove it from the ring 205. At this point, the cone 207 and the ring 205 together shield the top of the two-section sleeve 101, preventing soil clods from falling into it and causing protrusions at the connection point with the three-section sleeve 201, thus affecting the connection between the three-section sleeve 201 and the two-section sleeve 101. The user then removes the three-section sleeve 201... 01. Place the sleeve 205 into the ring and position it on the two-section sleeve 101, aligning their centerlines. Simultaneously, align connector A202 with connector B203 so that bolt 204 can pass through both connectors. The user then connects connectors A202 and B203 using bolt 204. At this point, the three-section sleeve 201 is connected to the two-section sleeve 101, preventing the three-section sleeve 201 from falling due to soil collapse. The user then starts the motor 30. 7. The right-hand screw 306 fixedly connected to its output shaft begins to rotate synchronously, and drives the left-hand screw 305 fixedly connected to it to rotate at a constant speed. At this time, the two sliding plates 304 threaded on them begin to slide to both sides of the connecting frame 208, thereby causing the plug 303 to be pulled out from the groove 302 and disengaged from the two-opening sleeve 101. This makes it easier to remove the connecting frame 208 and the ring 205 as a whole from the two-opening sleeve 101 and the three-opening sleeve 201 to avoid affecting subsequent construction.

[0031] 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 process, method, article, or apparatus.

[0032] The term "fixed connection" as used in this application refers to a connection in which parts or components are fixed without any relative movement. This includes both detachable and non-detachable connections.

[0033] (1) Detachable connection: The components are fixed together using screws, splines, wedges, etc. This type of connection can be disassembled during maintenance without damaging the parts. However, the specifications of the connecting parts used must be correct (such as the length of the bolts, keys, wedges) and properly tightened.

[0034] (2) Non-removable connections: These mainly refer to welding, riveting, and tenon joints. Since disassembly requires forging, sawing, or oxyacetylene cutting for repair or replacement, the parts generally cannot be reused. At the same time, attention should be paid to process quality, technical inspection, and remedial measures (such as correction and polishing) during connection.

[0035] The sliding connection referred to in this application means that the component can slide along a linear trajectory, and the hinge referred to in this application means that the component can rotate along an axial constraint.

[0036] In some cases, the sliding connection and hinge referred to in this application may also be damped, enabling the component to maintain in the desired position.

[0037] 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 wellhead anti-fall suspension and fixing device for surface gas mining wells, comprising a two-section casing (101), characterized in that, Also includes: Fixing component (2) is used to prevent the three-way sleeve from falling; The fixing component (2) includes a three-sleeve (201), a connector A (202), a connector B (203), and a bolt (204). Multiple connectors A (202) and connectors B (203) are fixedly connected to the three-sleeve (201) and the two-sleeve (101), respectively. The bolt (204) is inserted into the through hole of connector A (202), and the bolt (204) is threadedly connected to connector B (203).

2. The anti-fall suspension and fixing device for the wellhead of a surface gas mining well according to claim 1, characterized in that, The outer side of the double-sleeved sleeve (101) is fitted with a ring sleeve (205), and the top of the ring sleeve (205) is threaded with a cone head (207), which is used to break the soil clods buried on the double-sleeved sleeve (101).

3. The anti-fall suspension and fixing device for the wellhead of a surface gas mining well according to claim 2, characterized in that, Multiple sliding cylinders (301) are symmetrically fixedly connected to the inner wall of the ring sleeve (205). The sliding cylinders (301) are threadedly connected to the lead screw (209). The lead screw (209) is rotatably connected to the connecting frame (208). The sliding cylinders (301) are slidably connected to the connecting frame (208).

4. The anti-fall suspension and fixing device for the wellhead of a surface gas mining well according to claim 3, characterized in that, One end of the lead screw (209) is fixedly connected to the output shaft of the motor A (206), and the motor A (206) is fixedly connected to the connecting frame (208).

5. The anti-fall suspension and fixing device for the wellhead of a surface gas mining well according to claim 1, characterized in that, The outer wall of the double-opening sleeve (101) is symmetrically provided with multiple grooves (302), and plugs (303) are inserted into the multiple grooves (302) for fixing the connecting frame (208) on the double-opening sleeve (101).

6. The anti-fall suspension and fixing device for the wellhead of a surface gas mining well according to claim 5, characterized in that, The plug (303) is fixedly connected to the slide plate (304), the slide plate (304) is slidably connected in the connecting frame (208), and the two slide plates (304) are respectively threadedly connected to the left-hand lead screw (305) and the right-hand lead screw (306).

7. The anti-fall suspension and fixing device for the wellhead of a surface gas mining well according to claim 6, characterized in that, The left-hand lead screw (305) is rotatably connected to the connecting frame (208), the left-hand lead screw (305) is fixedly connected to the right-hand lead screw (306), one end of the right-hand lead screw (306) is fixedly connected to the output shaft of the motor (307), and the motor (307) is fixedly connected to the connecting frame (208).

8. The anti-fall suspension and fixing device for the wellhead of a surface gas mining well according to claim 5, characterized in that, The plug (303) is made of high-hardness steel.

Images