Petroleum drilling plug valve convenient to install

Abstract

The utility model relates to the technical field of petroleum drilling, and discloses a petroleum drilling plug valve convenient to install, which comprises a plug valve body, a gland, a valve rod and a hand wheel, a positioning connecting mechanism used for pre-fixed butt joint is installed between the gland and the outer side of the opposite side of the plug valve body, and the valve rod is connected with the hand wheel. The plug valve body is connected with the gland in a positioning mode through the positioning connecting mechanisms, the positioning connecting mechanisms are distributed in a mirror symmetry mode, the plug valve body is connected with the gland in a positioning mode through the positioning connecting mechanisms, one side of the valve rod is installed in the plug valve body, and one end of the hand wheel is installed on one side of the gland. The positioning connecting mechanism comprises two fixing blocks which are fixedly installed on the two sides of the gland through bolts respectively and are in mirror symmetry. According to the petroleum drilling plug valve convenient to install, the plug valve body and the gland can be conveniently installed, so that butt joint and pre-fixation are conveniently conducted on the connecting position of the plug valve body and the gland, and therefore the convenience of an existing plug valve during installation is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling, in particular to a plug valve for oil drilling. Background Art

[0002] In oil and gas drilling operations, blowout is an accident that people do not want to see on any drilling rig, because it endangers the lives of drilling team members, can damage the drilling rig, and pollute the environment. Usually, fluid or gas gushes out of the well with great force, especially when the fluid is gas, it often becomes a scene of roaring fireworks. The fluid that causes the accident comes from underground rocks, and its pressure is abnormally high, higher than normal. Therefore, the plug valve is used to quickly cut off the channel in the drill bit when overflow or blowout occurs, to prevent the excessive pressure in the drill bit from damaging the hose and ground equipment, so as to achieve the purpose of preventing blowout in the drill bit.

[0003] A plug valve is a rotary valve in the shape of a shutoff key or plunger. It is a fast-opening straight-through valve that is generally opened or closed by rotating ninety degrees.

[0004] Existing plug valves for oil drilling that are easy to install are generally improved to address the problem that the valve stem is easily deviated during the opening and closing process, resulting in increased friction resistance with the inner wall of the valve body, excessive wear, poor sealing, and leakage. For example, a plug valve for oil drilling disclosed in the authorized Chinese patent CN218150865U can ensure the directionality of the vertical movement of the valve stem through the use of a plug valve body, an upper cylinder, a packing, a valve stem, a turntable, a threaded inner ring, a sealing ring, a valve core, an auxiliary positioning ring, a threaded collar, a first ball, a second ball, an arc-shaped auxiliary spring piece, a receiving arc plate and other structures to avoid excessive wear caused by deviation. At the same time, the first ball is in a rolling state during the process of fitting with the outer wall of the valve stem, which reduces the friction between the valve stem and the valve stem, and utilizes the reaction force of the deformation of the arc-shaped auxiliary spring piece to make it fit more closely with the outer wall of the valve stem.

[0005] However, the plug valve in the above cited document is inconvenient to install. When installing between the upper column and the plug valve body, the installer needs to first accurately align the upper column and the plug valve body, and then use bolts to tighten to connect the column and the plug valve body. A slight touch will cause a position deviation between the upper column and the plug valve body, resulting in poor connection accuracy, which in turn leads to the need to improve the convenience of installing existing plug valves. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] In view of the deficiencies in the prior art, the utility model provides an easy-to-install plug valve for oil drilling, which has the advantages of effectively improving the convenience of the existing plug valve during installation and solving the problem of poor convenience of the existing plug valve during installation.

[0008] (II) Technical solution

[0009] In order to achieve the above-mentioned purpose of effectively improving the convenience of installing the existing plug valve, the utility model provides the following technical solutions: a plug valve for oil drilling that is easy to install, comprising a plug valve body, a gland, a valve stem and a hand wheel, a positioning connection mechanism for pre-fixed docking is installed between the outer sides of the gland and the plug valve body on the opposite side, and the positioning connection mechanism is distributed in a mirror-symmetrical manner, the plug valve body is positioned and connected to the gland through the positioning connection mechanism, one side of the valve stem is installed in the plug valve body, and one end of the hand wheel is installed on one side of the gland;

[0010] The positioning connection mechanism includes two fixed blocks which are respectively fixedly installed on both sides of the pressure cover by bolts and are mirror-symmetrical, two concave blocks which are mirror-symmetrical are fixedly installed on both sides of the plug valve body by bolts, and the positions of the fixed blocks and the corresponding concave blocks correspond one by one, a snap-in assembly inserted into the concave block is installed on the side of the fixed block close to the plug valve body, an adjusting box assembly and a limiting assembly connected to the adjusting box assembly are installed on the side of the concave block away from the plug valve body, two groups of auxiliary moving assemblies which are mirror-symmetrical are installed on the outside of the limiting assembly, an elastic guide assembly located in the adjusting box assembly is installed in the auxiliary moving assembly, the limiting assembly passes through the concave block and is connected to the snap-in assembly to limit the movement of the snap-in assembly, and the auxiliary moving assembly and the elastic guide assembly cooperate with each other to assist the limiting assembly to move smoothly.

[0011] Furthermore, the snap-in assembly includes a connecting rod and a clamping block; one end of the connecting rod is fixedly mounted on one side of the fixing block by bolts, and the other end is fixedly connected to one side of the clamping block, and the outer side of the clamping block slides in contact with the inner side of the concave block.

[0012] Furthermore, the regulating box assembly includes a regulating box and an L-shaped bracket; both sides of the regulating box are fixedly mounted with the concave block through the L-shaped bracket.

[0013] Furthermore, the limit assembly includes a pull rod, a handle, a sliding rod and a circular plug block; one end of the pull rod is fixedly installed on a side of the sliding rod away from the block by a bolt, and the other end passes through the adjustment box and extends to one side of the handle to be fixedly connected to the handle, and the circular plug block is fixedly connected to one side of the sliding rod;

[0014] The circular insert block is connected to the pull handle connected to the pull rod through the sliding rod, and the pull handle pulls the pull rod to move, thereby driving the circular insert block fixed on the sliding rod to move.

[0015] Furthermore, a slot for the circular plug block to fit and plug into is provided on a side of the clamping block away from the plug valve body.

[0016] Furthermore, the auxiliary moving assembly includes a moving block and an adjusting block; the two moving blocks are respectively fixedly connected to the outer sides of the sliding rod, and the two moving blocks are distributed in a mirror-symmetrical manner, one side of the adjusting block is fixedly installed on the side of the moving block away from the sliding rod, and the adjusting block is slidably connected to the adjusting box; when the sliding rod moves, the moving block is driven to move, and the adjusting block follows the movement.

[0017] Furthermore, an adjustment groove for the adjustment block to fit and slide is provided on the inner side wall of the adjustment box.

[0018] Furthermore, the elastic guide assembly includes a pillar and a return spring; the two ends of the pillar are respectively fixedly connected to the inner wall of the regulating box, the outer side of the pillar is slidably connected to the inner side of the moving block, the inner side of the return spring is sleeved on the outer side of the pillar, and the return spring pushes the moving block to move on the outer side of the pillar under elastic potential energy.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the utility model provides a plug valve for oil drilling that is easy to install and has the following beneficial effects:

[0021] The plug valve for oil drilling which is easy to install can facilitate the installation of the plug valve body and the gland through the mutual cooperation of the gland, the valve stem, the hand wheel and the positioning connection mechanism on the plug valve body, so as to facilitate the docking and pre-fixation of the connection between the plug valve body and the gland, thereby facilitating the fixation of the components inside the plug valve body, improving the efficiency of the connection between the plug valve body and the gland, and effectively improving the convenience of the existing plug valve during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 for Figure 1 A cross-sectional schematic diagram of the connection structure of the middle plug valve body;

[0024] Figure 3 for Figure 2A partial enlarged schematic diagram of the middle A part;

[0025] Figure 4 for Figure 3 A three-dimensional schematic diagram of the connection structure of the middle circular plug block.

[0026] In the figure: 1 plug valve body, 2 gland, 3 valve stem, 4 hand wheel, 500 positioning connection mechanism, 501 fixed block, 502 concave block, 5031 connecting rod, 5032 clamping block, 5041 adjusting box, 5042 L-shaped bracket, 5051 pull rod, 5052 handle, 5053 sliding rod, 5054 round plug block, 5061 moving block, 5062 adjusting block, 5071 support, 5072 return spring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-4 The utility model provides a technical solution: a plug valve for oil drilling that is easy to install, comprising a plug valve body 1, a gland 2, a valve stem 3 and a hand wheel 4, a positioning connection mechanism 500 for pre-fixed docking is installed between the outer sides of the gland 2 and the plug valve body 1, and the positioning connection mechanism 500 is distributed in a mirror-symmetrical manner, the plug valve body 1 is positioned and connected with the gland 2 through the positioning connection mechanism 500, one side of the valve stem 3 is installed in the plug valve body 1, and one end of the hand wheel 4 is installed on one side of the gland 2;

[0029] By using the gland 2, valve stem 3, hand wheel 4 and positioning connection mechanism 500 on the plug valve body 1 in coordination with each other, the plug valve body 1 and the gland 2 can be easily installed, thereby facilitating docking and pre-fixing of the connection between the plug valve body 1 and the gland 2, thereby facilitating fixation of the components inside the plug valve body 1, improving the efficiency of connecting the plug valve body 1 and the gland 2, and effectively improving the convenience of installing the existing plug valve.

[0030] In this embodiment, the positioning connection mechanism 500 is a structure for docking and pre-fixing the connection between the plug valve body 1 and the gland 2 .

[0031] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the positioning connection mechanism 500 includes two fixed blocks 501 which are respectively fixedly installed on both sides of the pressure cover 2 by bolts and are mirror-symmetrical. Two concave blocks 502 which are mirror-symmetrical are fixedly installed on both sides of the plug valve body 1 by bolts, and the positions of the fixed blocks 501 and the corresponding concave blocks 502 correspond one by one. A snap-in component inserted into the concave block 502 is installed on the side of the fixed block 501 close to the plug valve body 1, and an adjusting box assembly and a limit assembly connected to the adjusting box assembly are installed on the side of the concave block 502 away from the plug valve body 1. Two sets of auxiliary moving components which are mirror-symmetrical are installed on the outside of the limit assembly, and an elastic guide component located in the adjusting box assembly is installed in the auxiliary moving component. The limit assembly passes through the concave block 502 and is connected to the snap-in component to limit the movement of the snap-in component. The auxiliary moving component and the elastic guide component cooperate with each other to assist the limit assembly to move smoothly.

[0032] It should be noted that the snap-in assembly includes a connecting rod 5031 and a clamping block 5032; one end of the connecting rod 5031 is fixedly installed on one side of the fixed block 501 by bolts, and the other end is fixedly connected to one side of the clamping block 5032. The outer side of the clamping block 5032 fits and slides on the inner side of the concave block 502 to facilitate the docking of the position of the plug valve body 1 and the pressure cover 2.

[0033] It can be understood that the adjustment box assembly includes an adjustment box 5041 and an L-shaped bracket 5042; both sides of the adjustment box 5041 are fixedly installed through the L-shaped bracket 5042 and the concave block 502 to support the movement of the limit assembly.

[0034] In addition, the limiting assembly includes a pull rod 5051, a pull handle 5052, a sliding rod 5053 and a circular insert 5054; one end of the pull rod 5051 is fixedly installed on a side of the sliding rod 5053 away from the block 5032 by a bolt, and the other end passes through the adjustment box 5041 and extends to one side of the pull handle 5052 and is fixedly connected to the pull handle 5052, and the circular insert 5054 is fixedly connected to one side of the sliding rod 5053;

[0035] The circular plug block 5054 is connected to the handle 5052 connected to the pull rod 5051 through the sliding rod 5053. The handle 5052 pulls the pull rod 5051 to move, thereby driving the circular plug block 5054 fixed on the sliding rod 5053 to move, in order to facilitate pre-fixation during installation and release the limit during disassembly.

[0036] In this embodiment, a slot for the circular plug block 5054 to be inserted into is provided on the side of the clamping block 5032 away from the plug valve body 1 in order to limit the movement of the clamping block 5032 .

[0037] It should also be noted that the auxiliary moving assembly includes a moving block 5061 and an adjusting block 5062; the two moving blocks 5061 are respectively fixedly connected to the outer sides of the sliding rod 5053, and the two moving blocks 5061 are distributed in a mirror-symmetrical manner, one side of the adjusting block 5062 is fixedly installed on the side of the moving block 5061 away from the sliding rod 5053, and the adjusting block 5062 is slidably connected to the adjusting box 5041; when the sliding rod 5053 moves, it drives the moving block 5061 to move, and the adjusting block 5062 follows the movement.

[0038] It should be further explained that an adjustment groove for the adjustment block 5062 to slide in is provided on the inner wall of the adjustment box 5041 in order to improve the stability of the adjustment block 5062 when it moves.

[0039] It should also be noted that the elastic guide assembly includes a pillar 5071 and a return spring 5072; the two ends of the pillar 5071 are respectively fixedly connected to the inner wall of the adjustment box 5041, the outer side of the pillar 5071 is slidably connected to the inner side of the moving block 5061, and the inner side of the return spring 5072 is sleeved on the outer side of the pillar 5071. The return spring 5072 pushes the moving block 5061 to move on the outer side of the pillar 5071 under elastic potential energy, so as to be able to provide stable guiding support for the moving block 5061.

[0040] The working principle of the above embodiment is:

[0041] When the plug valve body 1 and the gland 2 need to be pre-fixed, first insert the block 5032 on the gland 2 into the corresponding concave block 502 and press it downward. At this time, the block 5032 contacts the circular plug block 5054. After the circular plug block 5054 is pushed by the block 5032, the sliding rod 5053 is pushed away from the plug valve body 1. Because the moving block 5061 can only move in the adjustment box under the sliding connection between the adjustment block 5062 and the adjustment groove, 5041, and the return spring 5072 on the pillar 5071 is squeezed by the squeezing force of the moving block 5061 to shrink, and the pull rod 5051 gradually moves to the outside of the adjusting box 5041. When the circular plug block 5054 corresponds to the position of the slot, the return spring 5072 is reset to push the moving block 5061 to move, and the sliding rod 5053 moves accordingly, and pushes the circular plug block 5054 to be stably inserted into the slot, thereby completing the pre-fixation of the connection between the plug valve body 1 and the pressure cover 2.

[0042] Compared with the prior art: the plug valve for oil drilling that is easy to install can facilitate the installation of the plug valve body 1 and the gland 2 through the mutual cooperation between the gland 2, the valve stem 3, the hand wheel 4 and the positioning connection mechanism 500 on the plug valve body 1, thereby facilitating the docking and pre-fixation of the connection between the plug valve body 1 and the gland 2, thereby facilitating the fixation of the components inside the plug valve body 1, improving the efficiency of the connection between the plug valve body 1 and the gland 2, thereby effectively improving the convenience of the existing plug valve during installation, and solving the problem of poor convenience of the existing plug valve during installation.

[0043] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0044] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A plug valve for oil drilling which is easy to install, comprising a plug valve body (1), a gland (2), a valve stem (3) and a hand wheel (4), characterized in that: A positioning connection mechanism (500) for pre-fixed docking is installed between the outer sides of the gland (2) and the plug valve body (1), and the positioning connection mechanism (500) is distributed in a mirror-symmetrical manner. The plug valve body (1) is positioned and connected to the gland (2) through the positioning connection mechanism (500), one side of the valve stem (3) is installed in the plug valve body (1), and one end of the hand wheel (4) is installed on one side of the gland (2); The positioning connection mechanism (500) comprises two fixed blocks (501) respectively fixedly mounted on both sides of the gland (2) by bolts and in a mirror-symmetrical manner, two concave blocks (502) are fixedly mounted on both sides of the plug valve body (1) by bolts and in a mirror-symmetrical manner, and the positions of the fixed blocks (501) and the corresponding concave blocks (502) correspond one to one, and a snap-in assembly inserted into the concave block (502) is installed on one side of the fixed block (501) close to the plug valve body (1), and the concave block (502) is fixedly mounted on the two sides of the plug valve body (1). A regulating box assembly and a limit assembly connected to the regulating box assembly are installed on the side away from the stopcock valve body (502), two sets of auxiliary moving assemblies in mirror symmetry are installed on the outer side of the limit assembly, an elastic guide assembly located in the regulating box assembly is installed in the auxiliary moving assembly, the limit assembly passes through the concave block (502) and is connected to the snap-in assembly to limit the movement of the snap-in assembly, and the auxiliary moving assembly and the elastic guide assembly cooperate with each other to assist the limit assembly to move smoothly.

2. The plug valve for oil drilling that is easy to install according to claim 1 is characterized in that: The snap-in assembly comprises a connecting rod (5031) and a clamping block (5032); one end of the connecting rod (5031) is fixedly mounted on one side of the fixing block (501) by means of bolts, and the other end is fixedly connected to one side of the clamping block (5032), and the outer side of the clamping block (5032) fits and slides on the inner side of the concave block (502).

3. The plug valve for oil drilling that is easy to install according to claim 2 is characterized by: The regulating box assembly comprises an regulating box (5041) and an L-shaped bracket (5042); both sides of the regulating box (5041) are fixedly mounted with the concave block (502) via the L-shaped bracket (5042).

4. The plug valve for oil drilling that is easy to install according to claim 3 is characterized by: The limit assembly comprises a pull rod (5051), a pull handle (5052), a sliding rod (5053) and a circular insert (5054); one end of the pull rod (5051) is fixedly mounted on a side of the sliding rod (5053) away from the block (5032) by means of bolts, and the other end passes through the adjustment box (5041) and extends to a side of the pull handle (5052) and is fixedly connected to the pull handle (5052); the circular insert (5054) is fixedly connected to one side of the sliding rod (5053); The circular plug (5054) is connected to the handle (5052) connected to the pull rod (5051) through the sliding rod (5053), and the handle (5052) pulls the pull rod (5051) to move, thereby driving the circular plug (5054) fixed on the sliding rod (5053) to move.

5. The plug valve for oil drilling that is easy to install according to claim 4 is characterized in that: A slot for the circular plug block (5054) to be fitted and plugged into is provided on a side of the clamping block (5032) away from the stopcock valve body (1).

6. The plug valve for oil drilling that is easy to install according to claim 4 is characterized by: The auxiliary moving component comprises a moving block (5061) and an adjusting block (5062); the two moving blocks (5061) are respectively fixedly connected to the outer sides of the sliding rod (5053), and the two moving blocks (5061) are distributed in a mirror-symmetrical manner, one side of the adjusting block (5062) is fixedly installed on the side of the moving block (5061) away from the sliding rod (5053), and the adjusting block (5062) is slidably connected to the adjusting box (5041); when the sliding rod (5053) moves, the moving block (5061) is driven to move, and the adjusting block (5062) moves accordingly.

7. The plug valve for oil drilling that is easy to install according to claim 6 is characterized by: An adjustment groove for the adjustment block (5062) to slide in is provided on the inner side wall of the adjustment box (5041).

8. The plug valve for oil drilling that is easy to install according to claim 6 is characterized by: The elastic guide assembly includes a pillar (5071) and a return spring (5072); the two ends of the pillar (5071) are respectively fixedly connected to the inner wall of the regulating box (5041), the outer side of the pillar (5071) is slidably connected to the inner side of the moving block (5061), the inner side of the return spring (5072) is sleeved on the outer side of the pillar (5071), and the return spring (5072) pushes the moving block (5061) to move on the outer side of the pillar (5071) under elastic potential energy.

Images