Suspension mounting device of protective casing for changing pre-pumping ground well into mining well

Abstract

The utility model relates to the technical field of coal mine gas extraction, in particular to a suspension installation device of a protective sleeve of a mining well changed from a pre-extraction ground well. According to the technical scheme, the sealing device comprises a wellhead casing pipe, a sealing mechanism, a protective sleeve, an adapter sleeve, a limiting piece, a sealing ring, a first connecting disc and a second connecting disc, the upper side of the wellhead casing pipe is fixedly connected with the second connecting disc, the first connecting disc is installed on the second connecting disc, and the sealing mechanism adjusted through threads is installed between the first connecting disc and the second connecting disc; the upper side of the first connecting disc is fixedly connected with a protective sleeve; according to the device, the adjusting threaded rod is rotated, the adjusting threaded rod can move in the adjusting hole due to rotation of the adjusting threaded rod, the position of the sealing frame can be accurately adjusted or pressure can be increased through movement, and the sealing rings and the limiting pieces are arranged between the sealing mechanism and the first connecting disc and between the sealing mechanism and the second connecting disc, so that effective work of the sealing mechanism is guaranteed; and the threaded rod can be adjusted to adapt to a well mouth sleeve with the size.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine gas extraction, in particular to a hanging and installing device for a protective casing for converting a pre-extraction ground well into a mining well. Background Art

[0002] Gas is one of the major disasters and safety hazards in coal mines. Gas prevention and control during coal mining is the top priority for ensuring safe production in coal mines. Pre-extraction surface wells are scrapped after completing the pre-extraction phase of gas extraction. Converting them to surface wells in the mining area allows gas extraction to be carried out in the mining depressurization zone. However, the precise and effective suspension of the wellhead when converting pre-extraction surface wells to surface wells in the mining area will affect the extraction effect of the surface wells.

[0003] Existing suspension and installation equipment cannot flexibly adapt to wellhead casings of different sizes, which may require additional equipment or a complex adjustment process. In addition, the sealing mechanism cannot effectively maintain the seal between the connecting plate, which may cause medium leakage or environmental pollution, and even affect the safety and long-term reliability of the equipment. In view of this, we propose a suspension and installation device for the protective casing of the pre-pumping ground well converted into a mining well to solve the existing problems. Utility Model Content

[0004] The purpose of the utility model is to provide a hanging and installing device for a protective casing of a pre-pumping ground well to be converted into a mining well, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hanging and installing device for a protective casing for converting a pre-pumping ground well into a mining well, comprising a wellhead casing, a sealing mechanism, a protective sleeve, a switching sleeve, a limiter, a sealing ring, a first connecting plate and a second connecting plate, the second connecting plate being fixedly connected to the upper side of the wellhead casing, the first connecting plate being installed on the second connecting plate, a threadedly adjustable sealing mechanism being installed between the first connecting plate and the second connecting plate, and a protective sleeve being fixedly connected to the upper side of the first connecting plate.

[0006] Preferably, the sealing mechanism includes a sealing frame, a rotating shaft, a first connecting member, an adjusting threaded rod, a second connecting member and an adjusting hole. The sealing frame is provided in three groups, and a rotating shaft is provided between the sealing frames. The sealing frames are connected to each other through the rotating shaft, and a limiting groove is provided in each sealing frame.

[0007] Preferably, the sealing frames on both sides are respectively fixedly connected with a first connecting member and a second connecting member, an adjustment hole is opened on the upper surface of the first connecting member, the interior of the adjustment hole is a threaded structure, and an adjustment threaded rod is movably connected inside the second connecting member, and the threads between the adjustment threaded rod and the adjustment hole cooperate with each other.

[0008] Preferably, a limiting member can be detachably connected in the limiting groove, and a sealing ring is provided between the limiting member and the first connecting plate and the second connecting plate, and the sealing ring is made of rubber material.

[0009] Preferably, the inner surface of the protective sleeve is a threaded structure, and the inner thread of the protective sleeve is connected to the adapter sleeve.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. When it is necessary to adjust the position of the sealing frame or increase the pressure, the operator can rotate the adjusting threaded rod. The rotation of the adjusting threaded rod will cause it to move in the adjusting hole. Due to the threaded fit between them, this movement can accurately adjust the position of the sealing frame or increase the pressure. The relative rotation of the sealing frame can ensure the adaptability and stability of the seal during operation. A sealing ring and a limiter are provided between the sealing mechanism and the first connecting disk and the second connecting disk to ensure the effective operation of the sealing mechanism. The wellhead casing of different sizes can be adapted by adjusting the threaded rod.

[0012] 2. The protective sleeve provides additional physical protection and is connected to the adapter sleeve through its internal thread structure. It may be used for connection to other equipment or operations, maintaining a safe and effective operating state during operation while providing necessary sealing and support functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a top view schematic diagram of the utility model;

[0015] Figure 3 This is a schematic structural diagram of the sealing mechanism in the present invention;

[0016] Figure 4 It is a schematic diagram of the overall internal structure of the present invention.

[0017] In the figure: 1. Wellhead casing; 2. Sealing mechanism; 201. Sealing frame; 202. Rotating shaft; 203. First connecting piece; 204. Adjusting threaded rod; 205. Second connecting piece; 206. Adjusting hole; 3. Protective sleeve; 4. Adapter sleeve; 5. Limiting piece; 6. Sealing ring; 7. First connecting plate; 8. Second connecting plate; 9. Limiting groove. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0019] like Figure 1-Figure 4 As shown, the utility model proposes a hanging and installing device for a protective casing for converting a pre-pumping ground well into a mining well, comprising a wellhead casing 1, a sealing mechanism 2, a protective sleeve 3, a switching sleeve 4, a limiter 5, a sealing ring 6, a first connecting plate 7 and a second connecting plate 8. The upper side of the wellhead casing 1 is fixedly connected to the second connecting plate 8, the first connecting plate 7 is installed on the second connecting plate 8, a threadedly adjustable sealing mechanism 2 is installed between the first connecting plate 7 and the second connecting plate 8, and the upper side of the first connecting plate 7 is fixedly connected to the protective sleeve 3.

[0020] In an optional embodiment, the sealing mechanism 2 includes a sealing frame 201, a rotating shaft 202, a first connecting member 203, an adjusting threaded rod 204, a second connecting member 205 and an adjusting hole 206. The sealing frame 201 is provided with three groups, and a rotating shaft 202 is provided between the sealing frames 201. The sealing frames 201 are connected to each other through the rotating shaft 202, and a limiting groove 9 is provided in each sealing frame 201.

[0021] In an optional embodiment, the sealing frames 201 on both sides are respectively fixedly connected with a first connecting member 203 and a second connecting member 205. An adjustment hole 206 is opened on the upper surface of the first connecting member 203. The interior of the adjustment hole 206 is a threaded structure. An adjustment threaded rod 204 is movably connected to the interior of the second connecting member 205. The threads of the adjustment threaded rod 204 and the adjustment hole 206 are engaged with each other.

[0022] When it is necessary to adjust the position of the sealing frame 201 or increase the pressure, the operator can rotate the adjusting threaded rod 204. The rotation of the adjusting threaded rod 204 will cause it to move in the adjusting hole 206. Due to the threaded fit between them, this movement can accurately adjust the position of the sealing frame 201 or increase the pressure. The relative rotation of the sealing frame 201 can ensure the adaptability and stability of the seal during operation, thereby ensuring the effective operation of the sealing mechanism. By adjusting the threaded rod 204, the size of the wellhead casing 1 can be adapted.

[0023] In an optional embodiment, the limiting member 5 can be detachably connected in the limiting groove 9, and a sealing ring 6 is provided between the limiting member 5 and the first connecting plate 7 and the second connecting plate 8. The sealing ring 6 is made of rubber material.

[0024] In an optional embodiment, the inner surface of the protective sleeve 3 is a threaded structure, and the protective sleeve 3 is internally threaded with a transition sleeve 4; the protective sleeve 3 provides additional physical protection and is connected to the transition sleeve 4 through its internal threaded structure, and may be used for connection to other equipment or operations, maintaining a safe and effective operating state during operation, while providing necessary sealing and support functions.

[0025] The working principle of the present invention is as follows: when using the device, first match the position of the first connecting disk 7 and the second connecting disk 8. When it is necessary to adjust the position of the sealing frame 201 or increase the pressure, the operator can rotate the adjusting threaded rod 204. The rotation of the adjusting threaded rod 204 will cause it to move in the adjusting hole 206. Due to the threaded matching between them, this movement can accurately adjust the position of the sealing frame 201 or increase the pressure. The relative rotation of the sealing frame 201 can ensure the adaptability and stability of the seal during operation, and a sealing ring 6 and a limiter 5 are provided between the sealing mechanism 2 and the first connecting disk 7 and the second connecting disk 8 to ensure the effective operation of the sealing mechanism 2. The wellhead casing 1 of an appropriate size can be adapted by adjusting the threaded rod 204. At the same time, the protective sleeve 3 provides additional physical protection and is connected to the adapter sleeve 4 through its internal threaded structure. It may be used for connection with other equipment or operations, maintaining a safe and effective operating state during operation, while providing necessary sealing and support functions.

[0026] It should be understood that the above-described specific embodiments of the present invention are intended to illustrate or explain the principles of the present invention and do not constitute limitations on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents of such scope and metes and bounds.

Claims

1. A hanging and installing device for a protective casing for converting a pre-pumped surface well into a mining well, characterized by: The invention comprises a wellhead casing (1), a sealing mechanism (2), a protective sleeve (3), a switching sleeve (4), a position limiting member (5), a sealing ring (6), a first connecting disc (7) and a second connecting disc (8); the upper side of the wellhead casing (1) is fixedly connected to the second connecting disc (8); the first connecting disc (7) is mounted on the second connecting disc (8); a sealing mechanism (2) with threaded adjustment is mounted between the first connecting disc (7) and the second connecting disc (8); and the upper side of the first connecting disc (7) is fixedly connected to the protective sleeve (3).

2. The device for hanging and installing a protective casing for converting a pre-drainage surface well into a mining well according to claim 1 is characterized in that: The sealing mechanism (2) comprises a sealing frame (201), a rotating shaft (202), a first connecting member (203), an adjusting threaded rod (204), a second connecting member (205) and an adjusting hole (206); the sealing frame (201) is provided with three groups, and the rotating shaft (202) is provided between the sealing frames (201); the sealing frames (201) are connected to each other via the rotating shaft (202), and the sealing frames (201) are each provided with a limiting groove (9).

3. The hanging and installing device for a protective casing for converting a pre-drainage surface well into a mining well according to claim 2 is characterized in that: The sealing frames (201) on both sides are respectively fixedly connected with a first connecting member (203) and a second connecting member (205); an adjusting hole (206) is provided on the upper surface of the first connecting member (203); the interior of the adjusting hole (206) is a threaded structure; and an adjusting threaded rod (204) is movably connected inside the second connecting member (205); the threads of the adjusting threaded rod (204) and the adjusting hole (206) are matched with each other.

4. The device for hanging and installing a protective casing for converting a pre-drainage surface well into a mining well according to claim 2, characterized in that: The limiting member (5) can be detachably connected in the limiting groove (9), and a sealing ring (6) is provided between the limiting member (5) and the first connecting disk (7) and the second connecting disk (8), and the sealing ring (6) is made of rubber material.

5. The hanging and installing device for a protective casing for converting a pre-drainage surface well into a mining well according to claim 1 is characterized in that: The inner surface of the protective sleeve (3) is in a threaded structure, and the internal thread of the protective sleeve (3) is connected to the adapter sleeve (4).

Images