Anti-falling mechanism and casing head four-way connecting component for gas production wellhead device

Abstract

The utility model relates to the technical field of anti-falling mechanisms and casing head four-way connecting components for gas production wellhead devices, in particular to an anti-falling mechanism and a casing head four-way connecting component for a gas production wellhead device, which comprise an anti-falling ring, a plurality of groups of inserting columns are arranged on the inner side of the anti-falling ring, and a sealing ring is arranged between two groups of inserting columns of the anti-falling ring; four connecting ports of the casing head four-way joint for the gas production wellhead device are provided with flange plates at the same time, and a plurality of groups of inserting grooves are formed in the periphery of the top of each flange plate; a flange plate is simultaneously mounted at a connecting port of the sleeve; the anti-falling mechanism and the casing head four-way connecting component for the gas production wellhead device have the advantages that the casing head four-way for the gas production wellhead device is connected with the casing pipe through the flange plate, the bolts are inserted into the bolts arranged on the flange plate, and the casing head four-way for the gas production wellhead device can be fixedly connected with the casing pipe.

Description

Technical Field

[0001] The utility model relates to the field of an anti-slip mechanism and a casing head four-way connecting component for a gas wellhead device, in particular to an anti-slip mechanism and a casing head four-way connecting component for a gas wellhead device. Background Art

[0002] In the gas wellhead device, the casing head cross connection component is used to connect the casing head and other devices or equipment. It is usually made of high-strength materials to ensure the safety and stability of the wellhead device.

[0003] In the prior art, most casing head spools for gas wellhead devices are connected to the casing by respectively setting a flange on the casing and the spool opening, and then tightening the two flanges with bolts to make them tightly combined.

[0004] However, in the prior art, the flange is connected to the gas wellhead device through a casing head. After long-term use, the bolts on the flange may become loose due to environmental corrosion and the shaking force of gas flowing in the pipeline, resulting in poor connection and even the bolts falling off in severe cases. Utility Model Content

[0005] The utility model aims to provide an anti-slip mechanism and a casing head four-way connecting component for a gas wellhead device, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-slip ring, a plurality of groups of plug-in columns are arranged on the inner side of the anti-slip ring, and a sealing ring is arranged between two groups of plug-in columns of the anti-slip ring; and a casing head spool for a gas wellhead device, the four connecting ports of the casing head spool for a gas wellhead device are simultaneously installed with flanges, and a plurality of groups of plug-in grooves are arranged around the top of the flange; and a casing, a flange is simultaneously installed at the connecting port of the casing.

[0007] Preferably, the casing head spool for the gas wellhead device and the casing can be fixedly connected to the casing by aligning two sets of flanges and inserting bolts into bolt holes on the flanges.

[0008] Preferably, leakage holes are opened on the side surface of the anti-slip ring, and the leakage holes correspond to the bolts on the flange one by one. The leakage holes allow the bolts to leak out of the anti-slip ring, preventing the leakage holes from blocking the anti-slip ring from preventing the two sets of flanges from slipping off.

[0009] Preferably, connecting blocks are provided at the upper and lower ends of the anti-slip ring, and bolt holes are opened on the connecting blocks. Fixing bolts can be inserted into the bolt holes to fix the two sets of anti-slip rings around the two sets of flanges at the connection between the casing head four-way and the two sets of casing for the gas wellhead device.

[0010] Preferably, a plurality of groups of plug-in columns are arranged on the inner side of the anti-slip ring, and the plug-in columns correspond one-to-one to the plug-in grooves provided on the flange, and the plug-in columns can be plugged into the plug-in grooves to prevent the gap between the two groups of flanges from becoming larger.

[0011] Preferably, the anti-slip ring is provided with a sealing ring between the two groups of plug-in columns, and the sealing ring can seal the gap at the connection of the two groups of flanges to prevent gas leakage from the gap between the two groups of flanges.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model provides an anti-slipping mechanism and a casing head four-way connecting component for a gas wellhead device. The casing head four-way for the gas wellhead device is connected to the casing through a flange plate, and then bolts are inserted into bolts opened on the flange plate to fix the connection between the casing head four-way for the gas wellhead device and the casing. After the casing head four-way for the gas wellhead device and the casing are fixed through the flange plate, an anti-slipping ring can be sleeved between the two groups of flange plates, and then fixing bolts can be inserted into bolt holes opened on connecting blocks arranged at the upper and lower ends of the anti-slipping ring to fix the anti-slipping ring around the outer sides of the two groups of flange plates, so that the anti-slipping ring can prevent the flange plates from falling off or loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the utility model.

[0017] In the figure: casing head spool 1, flange 2, casing 3, anti-slip ring 4, connecting block for gas wellhead device

[0018] 5. fixing bolt 6. leakage hole 7. bolt 8. plug-in groove 9. plug-in column 10. sealing ring 11. DETAILED DESCRIPTION

[0019] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] See also Figure 1-Figure 3 The utility model provides a technical solution: an anti-slip ring 4, a plurality of groups of plug-in columns 10 are arranged on the inner side of the anti-slip ring 4, and a sealing ring 11 is arranged between two groups of plug-in columns 10 of the anti-slip ring 4; and a casing head spool 1 for a gas wellhead device, four connecting ports of the casing head spool 1 for a gas wellhead device are simultaneously installed with flanges 2, and a plurality of groups of plug-in grooves 9 are arranged around the top of the flange 2; a casing 3, a flange 2 is simultaneously installed at the connecting port of the casing 3; and then by inserting bolts 8 into the bolts opened on the flange 2, the connection between the casing head spool 1 for a gas wellhead device and the casing 3 can be fixed.

[0022] Embodiment 2

[0023] On the basis of the first embodiment, the casing head spool 1 for the gas wellhead device and the casing 3 are connected and fixed by aligning the two groups of flanges 2 and then inserting bolts 8 into the bolt holes on the flanges 2; the side surface of the anti-slip ring 4 is provided with leakage holes 7, and the leakage holes 7 correspond to the bolts on the flanges 2 one by one. The leakage holes 7 can make the bolts leak out of the anti-slip ring 4 to prevent the leakage holes 7 from blocking the anti-slip ring 4 from preventing the two groups of flanges 2 from being slipped off; the upper and lower ends of the anti-slip ring 4 are provided with connecting blocks 5, and the connecting blocks 5 are provided with bolt holes, and fixing bolts 6 can be inserted into the bolt holes to fix the two groups of anti-slip rings 4 around the two groups of flanges 2 at the two connections of the casing head spool 1 for the gas wellhead device and the casing 3; the anti-slip ring 4 is fixed around the outer sides of the two groups of flanges 2 by inserting fixing bolts 6 into the bolt holes opened on the connecting blocks 5 provided at the upper and lower ends of the anti-slip ring 4.

[0024] Embodiment 3

[0025] On the basis of the second embodiment, a plurality of groups of plug-in columns 10 are arranged on the inner side of the anti-slip ring 4, and the plug-in columns 10 correspond one-to-one to the plug-in grooves 9 provided on the flange 2, and the plug-in columns 10 can be plugged into the plug-in grooves 9 to prevent the gap between the two groups of flanges 2 from becoming larger; a sealing ring 11 is arranged between the two groups of plug-in columns 10 of the anti-slip ring 4, and the sealing ring 11 can seal the gap at the connection between the two groups of flanges 2 to prevent gas from leaking from the gap between the two groups of flanges 2; a sealing ring 11 is arranged between the two groups of plug-in columns 10 of the anti-slip ring 4, and the sealing ring 11 is tightly attached to the gap between the two groups of flanges 2, and the sealing ring 11 can seal the gap between the two groups of flanges 2 to prevent gas leakage.

[0026] In actual use, the casing head spool 1 for the gas wellhead device is connected to the casing 3 through the flange 2, and then the bolts 8 are inserted into the bolts opened on the flange 2 to fix the connection between the casing head spool 1 and the casing 3 for the gas wellhead device. After the casing head spool 1 for the gas wellhead device and the casing 3 are fixed through the flange 2, an anti-slip ring 4 can be sleeved between the two groups of flanges 2, and then the fixing bolts 6 can be inserted into the bolt holes opened on the connecting blocks 5 set at the upper and lower ends of the anti-slip ring 4 to fix the anti-slip ring 4 around the outer sides of the two groups of flanges 2. The flange 2 is prevented from falling off or loosening; multiple groups of plug-in grooves 9 are provided around the outer side of the flange 2, and multiple groups of plug-in columns 10 are provided on the inner side of the anti-slip ring 4. The plug-in columns 10 correspond to the plug-in grooves 9 one by one. The plug-in columns 10 can be plugged into the plug-in grooves 9 to limit the two groups of flanges 2 to prevent the gap between the two groups of flanges 2 from becoming larger, resulting in gas leakage. The anti-slip ring 4 is provided with a sealing ring 11 between the two groups of plug-in columns 10. The sealing ring 11 is tightly attached to the gap between the two groups of flanges 2. The sealing ring 11 can seal the gap between the two groups of flanges 2 to prevent gas leakage.

[0027] 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 variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-slip mechanism, characterized in that: The anti-slip mechanism comprises: an anti-slip ring (4), a plurality of groups of plug-in posts (10) are arranged on the inner side of the anti-slip ring (4), and a sealing ring (11) is arranged between two groups of plug-in posts (10) of the anti-slip ring (4); and A casing head spool (1) for a gas wellhead device, wherein four connection ports of the casing head spool (1) for a gas wellhead device are simultaneously provided with flanges (2), and a plurality of groups of plug-in slots (9) are provided around the top of the flange (2); The sleeve (3) is provided with a flange (2) at the connection port of the sleeve (3).

2. The anti-slip mechanism according to claim 1, characterized in that: The casing head spool (1) and the casing (3) for the gas wellhead device are connected and fixed by aligning two sets of flanges (2) and inserting bolts (8) into bolt holes on the flanges (2).

3. The anti-slip mechanism according to claim 2, characterized in that: The side surface of the anti-slip ring (4) is provided with leakage holes (7), which correspond one to one with the bolts on the flange (2). The leakage holes (7) allow the bolts to leak out of the anti-slip ring (4), thereby preventing the leakage holes (7) from blocking the anti-slip ring (4) from preventing the two sets of flanges (2) from slipping off.

4. The anti-slip mechanism according to claim 3, characterized in that: The upper and lower ends of the anti-slip ring (4) are provided with connecting blocks (5), and bolt holes are provided on the connecting blocks (5). Fixing bolts (6) can be inserted into the bolt holes to fix the two sets of anti-slip rings (4) around the two sets of flanges (2) at the connection points between the casing head spool (1) and the casing (3) of the gas wellhead device.

5. The anti-slip mechanism according to claim 4, characterized in that: A plurality of groups of plug-in columns (10) are arranged on the inner side of the anti-slip ring (4), and the plug-in columns (10) correspond one to one with the plug-in grooves (9) provided on the flange (2). The plug-in columns (10) can be plugged into the plug-in grooves (9) to prevent the gap between the two groups of flanges (2) from becoming larger.

6. The anti-slip mechanism according to claim 5, characterized in that: The anti-slip ring (4) is provided with a sealing ring (11) between the two groups of plug-in columns (10). The sealing ring (11) can seal the gap at the connection of the two groups of flanges (2) to prevent gas from leaking from the gap between the two groups of flanges (2).

7. A casing head spool connection component for a gas wellhead device, characterized in that: It comprises the anti-slip mechanism described in any one of claims 1 to 6.

Images