Quickly-assembled casing head

Abstract

The utility model relates to the technical field of gas production, in particular to a fast-assembly casing head which comprises a lower fixing head, a gas production pipe and an upper fixing head, the upper fixing head is arranged at the upper end of the lower fixing head, and the lower fixing head and the upper fixing head are both located on the outer side of the top end of the gas production pipe. An outer sleeve is fixed to the periphery of the gas production pipe through fastening screws, a protruding part is arranged on the periphery of the outer sleeve, positioning grooves are formed in the positions, close to the top, of the inner wall of the lower fixing head and the positions, close to the bottom, of the inner bottom of the upper fixing head correspondingly, and the protruding part is sleeved with the positioning grooves; a first connecting disc and a second connecting disc are arranged at the positions, close to each other, of the lower fixing head and the upper fixing head respectively, and the first connecting disc and the second connecting disc are connected in a fastened mode through connecting bolts. The casing head can be quickly and stably mounted at the top end of a gas production pipeline, the casing head mounting efficiency is high, and high-efficiency production work is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of gas production, in particular to a quick-install casing head. Background Art

[0002] The casing head for gas production is a device used in gas wells, mainly used to control the pressure and temperature of the gas wellhead, while providing the functions of connecting and closing the wellhead.

[0003] The previous casing head could not be installed on the top of the gas production pipeline quickly and stably, which made the installation of the casing head low in efficiency and could not facilitate high-efficiency production work. Utility Model Content

[0004] In view of the problems in the prior art, the utility model provides a quick-install casing head, which can be quickly and stably installed on the top of a gas production pipeline. The casing head has high efficiency when being installed, which is conducive to high-efficiency production work.

[0005] The technical solution adopted by the utility model to solve the technical problem is a quick-install casing head, comprising a lower fixed head, a gas production pipe and an upper fixed head, wherein the upper fixed head is arranged at the upper end of the lower fixed head, and the lower fixed head and the upper fixed head are both located outside the top end of the gas production pipe;

[0006] An outer sleeve is fixed to the periphery of the gas production pipe by fastening screws, a protrusion is arranged on the periphery of the outer sleeve, positioning grooves are arranged near the top of the inner wall of the lower fixed head and near the bottom of the inner bottom of the upper fixed head, and the positioning grooves are sleeved on the outside of the protrusions, and a first connecting plate and a second connecting plate are respectively arranged near the lower fixed head and the upper fixed head, and the first connecting plate and the second connecting plate are fastened and connected by connecting bolts.

[0007] By adopting the above technical scheme, the outer casing is fixed to the outside of the gas production pipe by tightening screws, the first connecting plate and the second connecting plate are connected by connecting bolts, and the lower fixed head and the upper fixed head are fixed. At this time, the positioning groove is clamped on the outside of the protrusion. The protrusion cooperates with the positioning groove, so that the casing head can be quickly fixed to the outside of the gas production pipe with good fixing effect, so that the casing head can be quickly and stably installed on the top of the gas production pipeline, and the efficiency of installing the casing head is high, which is conducive to high-efficiency production work.

[0008] Specifically, a flange is arranged on the periphery of the top end of the upper fixing head, and a mounting hole is penetrated through the bottom of the flange near the edge.

[0009] Specifically, a first sealing ring is provided at the top of the flange near the inner side of the mounting hole through a reserved groove.

[0010] By adopting the above technical solution, the sealing effect between the upper fixing head and the external pipeline can be improved through the first sealing ring when the flange is connected to the external pipeline.

[0011] Specifically, a convex block is provided on the inner wall of the upper fixing head near the top, a sealing groove is provided inside the convex block, a second sealing ring is provided in the sealing groove, and the second sealing ring is located at the periphery of the top of the gas production pipe.

[0012] Specifically, a cavity is arranged inside the protruding portion.

[0013] Specifically, the lower fixing head and the upper fixing head are both made of stainless steel.

[0014] By adopting the above technical solution, the lower fixing head and the upper fixing head made of stainless steel material have good strength and corrosion resistance, and are reliable when used.

[0015] Beneficial effects of the utility model:

[0016] (1) The utility model discloses a quick-install casing head, which fixes the outer casing to the outside of the gas production pipe by fastening screws, connects the first connecting plate and the second connecting plate by connecting bolts, and fixes the lower fixing head and the upper fixing head. At this time, the positioning groove is clamped on the outside of the protruding part. The protruding part cooperates with the positioning groove, so that the casing head can be quickly fixed to the outside of the gas production pipe with good fixing effect, so that the casing head can be quickly and stably installed at the top of the gas production pipeline. The efficiency of installing the casing head is high, which is conducive to high-efficiency production work.

[0017] (2) A quick-release casing head according to the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall structure after cutting of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the utility model when cut away and viewed from above.

[0022] In the figure: 1. lower fixing head; 2. gas collection pipe; 3. upper fixing head; 4. first connecting plate; 5. second connecting plate; 6. connecting bolts; 7. flange; 8. mounting hole; 9. first sealing ring; 10. bump; 11. second sealing ring; 12. sealing groove; 13. fastening screw; 14. outer sleeve; 15. raised part; 16. positioning groove. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] In order to enable the casing head to be installed quickly and stably on the top of the gas pipeline and improve the efficiency of installation, Figure 1-3 As shown, a quick-install casing head described in the utility model comprises a lower fixed head 1, a gas production pipe 2 and an upper fixed head 3, wherein the upper fixed head 3 is arranged at the upper end of the lower fixed head 1, and the lower fixed head 1 and the upper fixed head 3 are both located outside the top end of the gas production pipe 2;

[0025] An outer sleeve 14 is fixed to the periphery of the gas production pipe 2 by fastening screws 13, and a protrusion 15 is arranged on the periphery of the outer sleeve 14. Positioning grooves 16 are arranged on the inner wall of the lower fixed head 1 near the top and on the inner bottom of the upper fixed head 3 near the bottom. The positioning grooves 16 are sleeved on the outside of the protrusion 15. A first connecting plate 4 and a second connecting plate 5 are respectively arranged near the lower fixed head 1 and the upper fixed head 3. The first connecting plate 4 and the second connecting plate 5 are fastened together by connecting bolts 6.

[0026] When in use, the outer sleeve 14 is fixed to the outside of the gas production pipe 2 by tightening the screws 13, and the first connecting plate 4 and the second connecting plate 5 are connected by connecting bolts 6, so as to fix the lower fixed head 1 and the upper fixed head 3. At this time, the positioning groove 16 is clamped on the outside of the protrusion 15, and the protrusion 15 cooperates with the positioning groove 16, so that the casing head can be quickly fixed to the outside of the gas production pipe 2, and the fixing effect is good, so that the casing head can be quickly and stably installed at the top of the gas production pipeline, and the efficiency of installing the casing head is high, which is conducive to high-efficiency production work.

[0027] For example, Figure 1-3 As shown, the utility model also includes that a flange 7 is arranged at the periphery of the top end of the upper fixing head 3, and a mounting hole 8 is penetrated and opened at the bottom of the flange 7 near the edge.

[0028] When in use, external bolts are passed through the mounting holes 8 to facilitate connection between the fixing head 3 and the flange on the external pipeline.

[0029] For example, Figure 1-3 As shown, the utility model also includes that a first sealing ring 9 is provided at the top of the flange 7 near the inner side of the mounting hole 8 through a reserved groove.

[0030] When in use, the first sealing ring 9 can improve the sealing effect between the upper fixing head 3 and the external pipeline when the flange 7 is connected to the external pipeline.

[0031] For example, Figure 2-3 As shown, the utility model also includes that a protrusion 10 is provided on the inner wall of the upper fixed head 3 near the top, a sealing groove 12 is opened inside the protrusion 10, a second sealing ring 11 is provided in the sealing groove 12, and the second sealing ring 11 is located on the outer periphery of the top of the gas production pipe 2.

[0032] When in use, the second sealing ring 11 can effectively improve the sealing effect between the top of the gas sampling pipe 2 and the inner wall of the upper fixed head 3 .

[0033] For example, Figure 2-3 As shown, the utility model also includes that a cavity is arranged inside the protrusion 15 .

[0034] When in use, the overall weight of the outer sleeve 14 can be effectively reduced by the cavity.

[0035] For example, Figure 1-3 As shown, the utility model also includes that the lower fixing head 1 and the upper fixing head 3 are both made of stainless steel.

[0036] When in use, the lower fixing head 1 and the upper fixing head 3 made of stainless steel material have good strength and corrosion resistance, and good reliability when in use.

[0037] When the utility model is in use, the external bolts are passed through the mounting holes 8 to facilitate the connection between the upper fixing head 3 and the flange on the external pipe. The first sealing ring 9 can improve the sealing effect between the upper fixing head 3 and the external pipe when the flange 7 is connected to the external pipe.

[0038] The outer sleeve 14 is fixed to the outside of the gas production pipe 2 by tightening the screws 13, and the first connecting plate 4 and the second connecting plate 5 are connected by connecting bolts 6, so as to fix the lower fixed head 1 and the upper fixed head 3. At this time, the positioning groove 16 is clamped on the outside of the protrusion 15. The protrusion 15 cooperates with the positioning groove 16, so that the casing head can be quickly fixed to the outside of the gas production pipe 2, and the fixing effect is good, so that the casing head can be quickly and stably installed at the top of the gas production pipeline, and the efficiency of installing the casing head is high, which is conducive to high-efficiency production work.

[0039] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A quick-release casing head, characterized in that: It comprises a lower fixed head (1), a gas collection pipe (2) and an upper fixed head (3), wherein the upper fixed head (3) is arranged at the upper end of the lower fixed head (1), and the lower fixed head (1) and the upper fixed head (3) are both located outside the top end of the gas collection pipe (2); An outer sleeve (14) is fixed to the periphery of the gas production pipe (2) by means of fastening screws (13); a protrusion (15) is arranged on the periphery of the outer sleeve (14); positioning grooves (16) are arranged on the inner wall of the lower fixing head (1) near the top and on the inner bottom of the upper fixing head (3) near the bottom; the positioning grooves (16) are sleeved on the outside of the protrusion (15); a first connecting plate (4) and a second connecting plate (5) are arranged near the lower fixing head (1) and the upper fixing head (3), respectively; the first connecting plate (4) and the second connecting plate (5) are fastened and connected by means of connecting bolts (6).

2. A quick-release casing head according to claim 1, characterized in that: A flange (7) is arranged on the periphery of the top end of the upper fixing head (3), and a mounting hole (8) is provided through the bottom of the flange (7) near the edge.

3. A quick-release casing head according to claim 2, characterized in that: A first sealing ring (9) is provided at the top of the flange (7) near the inner side of the mounting hole (8) via a reserved groove.

4. The quick-release casing head according to claim 1, characterized in that: A bulge (10) is provided on the inner wall of the upper fixed head (3) near the top, a sealing groove (12) is provided inside the bulge (10), a second sealing ring (11) is provided in the sealing groove (12), and the second sealing ring (11) is located on the periphery of the top end of the gas production pipe (2).

5. The quick-release casing head according to claim 1, characterized in that: A cavity is arranged inside the protruding portion (15).

6. The quick-release casing head according to claim 1, characterized in that: The lower fixing head (1) and the upper fixing head (3) are both made of stainless steel.

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