CN210949951U - Built-in hydraulic flat gate valve locking and manual control device of tubing head - Google Patents
Built-in hydraulic flat gate valve locking and manual control device of tubing head Download PDFInfo
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- CN210949951U CN210949951U CN201922037479.7U CN201922037479U CN210949951U CN 210949951 U CN210949951 U CN 210949951U CN 201922037479 U CN201922037479 U CN 201922037479U CN 210949951 U CN210949951 U CN 210949951U
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Abstract
The utility model relates to a well head oil pipe head technical field is a built-in dull and stereotyped gate valve locking and hand control unit that surges of oil pipe head, and it includes oil pipe head cross and master control gate valve, and the master control gate valve includes the valve plate and can control the hydraulic drive mechanism of valve plate switch oil pipe head cross main entrance. The utility model has reasonable and compact structure and convenient use, integrates the oil pipe head cross joint and the master control gate valve into a whole, the valve plate of the master control gate valve is arranged in the oil pipe head cross joint by crossing the left port and the right port, the whole height is greatly reduced, the oil collecting pipe head cross joint and the master control gate valve are integrated, and the hydraulic driving mechanism controls the communication state of the main channel of the oil pipe head cross joint, namely the control of the pressure of a shaft can be realized; and the manual driving mechanism can assist the hydraulic driving mechanism to control the communication state of the four-way main channel of the oil pipe head, and in addition, the manual driving mechanism can also control the communication state of the four-way main channel of the oil pipe head under the condition of not using the hydraulic driving mechanism.
Description
Technical Field
The utility model relates to a well head oil pipe head technical field is a built-in dull and stereotyped gate valve locking and hand control unit that surges of oil pipe head.
Background
At present, the unconventional oil and gas reservoir fracturing technology is popularized and applied in batches in Xinjiang oil fields, the technology adopts a fracturing wellhead device +2 large-drift-diameter flat gate valves and a fracturing tree combined structure for fracturing in the current fracturing operation process, after the fracturing drilling and plugging operation is completed, the large-drift-diameter flat gate valves are closed, and the Christmas trees with the same specification as the fracturing wellhead are installed for reverse discharge and production of fracturing fluid. However, because the oil pipe is not arranged in the shaft, the pressure of the casing can not be controlled, one or two large-diameter flat gate valves (main control gate valves) are required to be reserved between the wellhead and the Christmas tree to control the pressure of the shaft, which brings great troubles to later production operation and also causes great waste of resources of the Christmas tree, the flat gate valves have large sizes, and are difficult to open and close by manpower under high pressure, and certain potential safety hazards also exist to personnel operation in height.
Disclosure of Invention
The utility model provides a built-in plate valve locking and the hand control unit that surges of oil pipe head has overcome above-mentioned prior art not enough, and it can effectively solve current production tree height too high, and under higher pressure, is difficult to open and close the problem of master control gate valve.
The technical scheme of the utility model is realized through following measure: a locking and manual control device of a hydraulic flat gate valve arranged in an oil pipe head comprises an oil pipe head four-way and a master control gate valve, wherein the master control gate valve comprises a valve plate and a hydraulic driving mechanism capable of controlling the valve plate to open and close a main channel of the oil pipe head four-way; a left port and a right port which are symmetrical left and right are arranged on the tubing head four-way joint between the upper part of the front port and the rear port of the tubing head four-way joint and the lower part of the upper port of the tubing head four-way joint, and the left port and the right port are communicated through a main channel of the tubing head four-way joint; the valve plate traverses the right port of the four-way oil pipe head from the left port of the four-way oil pipe head, and the hydraulic driving mechanism is fixedly connected with the left port of the four-way oil pipe head; the oil pipe head four-way is provided with a manual driving mechanism.
The following are further optimization or/and improvement of the technical scheme of the utility model:
an installation ring groove is arranged in the four-way pipe head corresponding to the left port and the right port, and a valve seat is fixedly arranged in the installation ring groove; the inner diameter of the valve seat is the same as that of the oil pipe head cross joint at the joint of the valve seat and the valve seat, the left end of the valve seat is provided with a left through hole coaxially corresponding to the left port of the oil pipe head cross joint, the right end of the valve seat is provided with a right through hole coaxially corresponding to the right port of the oil pipe head cross joint, the valve plate transversely penetrates through the valve seat through the left through hole and the right through hole, and the valve plate is provided with a valve hole which enables the upper port of the oil pipe head cross joint to be communicated with;
a left valve cover for covering the left port of the oil pipe head four-way joint is fixedly and hermetically arranged on the outer side of the left port of the oil pipe head four-way joint, a right valve cover for covering the right port of the oil pipe head four-way joint is fixedly and hermetically arranged on the outer side of the right port of the oil pipe head four-way joint, a left stepped hole which is narrow at the left and wide at the right and is axially and correspondingly communicated with the left through hole is transversely arranged on the left valve cover, a right stepped hole which is wide at the left and narrow at the right and is axially and correspondingly communicated with the right through hole is transversely arranged on the right valve cover, and the valve; the left end of the valve plate is fixedly connected with a piston rod of the hydraulic driving mechanism;
the hydraulic driving mechanism comprises a hydraulic cylinder, a piston and a piston rod, the hydraulic cylinder comprises a hydraulic cylinder body and a cylinder cover, the cylinder cover and the left part of the hydraulic cylinder body are fixedly installed together in a sealing mode, a hydraulic cavity is formed between the cylinder cover and the hydraulic cylinder body, the piston rod is arranged in the hydraulic cavity in a coaxial mode with the valve plate, the piston is fixedly installed on the outer side of the piston rod, the left side of the hydraulic cylinder body is fixedly connected with a left valve cover in a sealing, a left connecting hole axially corresponding to the left port is arranged on the left side of the hydraulic cylinder body, an oil inlet is arranged on the side wall of the hydraulic cylinder body corresponding to the left end of the hydraulic cavity, an oil outlet is arranged on the side wall of the hydraulic cylinder body corresponding to the right end of the hydraulic cavity, the cross section of the left end of the piston is narrow at the left and wide at the right, the cross section of the right end of the piston is narrow at the right and wide at the right, a left boosting hydraulic cavity is formed between the outer part of the left end of the piston and the inner wall surface of the hydraulic cylinder body, and a right boosting hydraulic cavity is formed between the outer part of the right end of the piston and the inner wall; the left end of the valve plate penetrates through the left connecting hole and then is fixedly connected with the right end of the piston rod, a telescopic hole axially corresponding to the piston rod is formed in the cylinder cover, and a left valve cover surrounding the telescopic hole is arranged on the cylinder cover outside the telescopic hole;
the manual driving mechanism comprises a left manual mechanism and a right manual mechanism, the left manual mechanism comprises a hand wheel and a left threaded rod, a threaded section is arranged in the left part of the left valve cover, the left threaded rod is fixedly installed in the left valve cover, the left end of the left threaded rod extends out of the left valve cover from the left side of the left valve cover and then is fixedly installed with the hand wheel, the right end of the left threaded rod is abutted against the right end of the piston rod, and the right end of the left valve cover is fixedly installed on the cylinder cover through a locking screw; the right hand-operated mechanism comprises a right threaded rod and a right valve cover, the right valve cover covering the right end of the valve plate is fixedly mounted on the right valve cover, a threaded section is arranged in the right part of the right valve cover, the left end of the right valve cover is fixedly mounted on the right valve cover through a locking screw, the right part of the right threaded rod is fixedly mounted in the right valve cover, and the left end of the right threaded rod is abutted to the right end of the valve plate.
The left port, the front port, the right port and the rear port of the four-way pipe head are distributed in a staggered manner on the horizontal plane.
The narrow diameter section of the left stepped hole is provided with a left sealing groove with an opening facing to the left, a sealing element is fixedly arranged in the left sealing groove, the sealing element adopts spring energy storage sealing filler or a spring energy storage sealing ring, and a sealing gland is fixedly arranged in the left sealing groove at the outer end of the sealing element; a right sealing groove with a rightward opening is formed in the narrow diameter section of the right stepped hole, a sealing element is fixedly installed in the right sealing groove, and a sealing gland is fixedly installed in the right sealing groove at the outer end of the sealing element; at least one sealing ring is arranged between the outer sides of the valve seats above and below the valve plate and the inner side of the four-way pipe of the oil pipe head.
Radial locking holes are distributed at the upper port of the four-way joint of the tubing head along the circumference; and radial grease injection holes and radial pressure relief holes are circumferentially distributed at the lower end of the four-way joint of the tubing head.
The utility model has reasonable and compact structure and convenient use, integrates the oil pipe head cross joint and the master control gate valve into a whole, the valve plate of the master control gate valve is arranged in the oil pipe head cross joint by crossing the left port and the right port, the whole height is greatly reduced, the oil collecting pipe head cross joint and the master control gate valve are integrated, and the hydraulic driving mechanism controls the communication state of the main channel of the oil pipe head cross joint, namely the control of the pressure of a shaft can be realized; and the manual driving mechanism can assist the hydraulic driving mechanism to control the communication state of the four-way main channel of the oil pipe head, and in addition, the manual driving mechanism can also control the communication state of the four-way main channel of the oil pipe head under the condition of not using the hydraulic driving mechanism.
Drawings
Fig. 1 is a schematic sectional view of the preferred embodiment of the present invention.
Fig. 2 is an enlarged schematic view of a portion a of fig. 1.
The codes in the figures are respectively: the four-way valve comprises a four-way oil pipe head 10, a valve plate 11, a front port 12, an upper port 13, a left port 14, a right port 15, a main channel 16, a valve seat 17, a valve hole 18, a left valve cover 19, a right valve cover 20, a left stepped hole 21, a right stepped hole 22, a piston 23, a piston rod 24, a hydraulic cavity 25, an oil inlet 26, a left boosting hydraulic cavity 27, a right boosting hydraulic cavity 28, a left connecting hole 29, a hydraulic cylinder body 30, a cylinder cover 31, a telescopic hole 32, a left valve cover 33, a sealing element 34, a sealing gland 35, a right valve cover 36, a sealing ring 37, a radial locking hole 38, a radial grease injection hole 39, a radial pressure relief hole 40, a radial pressure relief hole 41, a hand wheel 42, a sealing ring 43, a left threaded rod 44, a locking screw 45 and a right threaded rod 46.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The invention will be further described with reference to the following examples and drawings:
as shown in attached figures 1 and 2, the hydraulic flat gate valve locking and manual control device arranged in the oil pipe head comprises an oil pipe head four-way 10 and a main control gate valve, wherein the main control gate valve comprises a valve plate 11 and a hydraulic driving mechanism capable of controlling the valve plate 11 to open and close a main channel 16 of the oil pipe head four-way; a left port 14 and a right port 15 which are symmetrical left and right are arranged on the tubing head four-way joint 10 between the upper part of a front port 12 and a rear port of the tubing head four-way joint 10 and the lower part of an upper port 13 of the tubing head four-way joint 10, and the left port 14 and the right port 15 are communicated through a main channel 16 of the tubing head four-way joint; the valve plate 11 traverses a right port 15 of the oil pipe head four-way joint 10 from a left port 14 of the oil pipe head four-way joint 10, and the hydraulic driving mechanism is fixedly connected with the left port 14 of the oil pipe head four-way joint 10; the tubing head cross 10 is provided with a manual driving mechanism.
The oil collecting pipe head four-way valve integrates an oil pipe head four-way valve 10 and a main control gate valve, a valve plate 11 of the main control gate valve is arranged in the oil pipe head four-way valve 10 by penetrating through a left port 14 and a right port 15, the overall height is greatly reduced, the oil collecting pipe head four-way valve 10 and the main control gate valve are integrated, and the communication state of a main channel 16 of the oil pipe head four-way valve is controlled by a hydraulic driving mechanism, so that the pressure of a shaft can be controlled; and the manual driving mechanism can assist the hydraulic driving mechanism to control the communication state of the four-way main channel 16 of the oil pipe head, and in addition, the manual driving mechanism can also control the communication state of the four-way main channel 16 of the oil pipe head under the condition of not using the hydraulic driving mechanism.
The front port 12 and the rear port of the four-way pipe head 10 are fixedly connected with a sleeve valve according to the conventional connection mode, an oil pipe hanger is installed in the four-way pipe head 10 close to the upper port 13 according to the conventional installation mode, and a sleeve is installed at the lower port of the four-way pipe head 10.
The oil pipe head four-way main channel 16 is a vertical channel of the oil pipe head four-way 10, the oil pipe head four-way main channel 16 below the valve plate 11 is a sleeve channel, and the sleeve channel is arranged below the valve plate 11 to reserve a sleeve emergency channel.
The valve plate 11 is designed at the position between the casing passage of the four-way pipe head 10 and the oil pipe hanger, the oil pipe hanger is not installed in the fracturing operation, the reverse discharge and the self-spraying production stages, and the oil pipe hanger is installed through a pressurized operation device in the later-stage conversion production.
The hydraulic driving mechanism is arranged, so that the problems that a manual large flat gate valve connected above the existing Christmas tree tubing head four-way joint 10 is large in opening and closing torque and difficult to open and close are solved; because the opening and closing end (valve plate 11) of the main control gate valve is arranged in the oil pipe head four-way joint 10, potential safety hazards caused by ascending operation of personnel are reduced.
The locking and manual control device of the hydraulic flat gate valve arranged in the oil pipe head can be further optimized or/and improved according to actual requirements:
as shown in fig. 1, in order to facilitate the disassembly and assembly of the casing valve and the hydraulic drive mechanism, effectively utilize the space, and further reduce the overall height of the device, the left port 14, the front port 12, the right port 15 and the rear port of the tubing head cross 10 are distributed in a staggered manner on the horizontal plane.
When the left port 14, the front port 12, the right port 15 and the rear port of the tubing head four-way joint 10 are distributed at intervals of 90 degrees along the horizontal plane, the operation is most convenient, and the overall height reaches the lowest value.
As shown in the attached figure 1, an installation ring groove is arranged in the oil pipe head four-way joint 10 corresponding to the left and right ports 15, and a valve seat 17 is fixedly arranged in the installation ring groove; the inner diameter of the valve seat 17 is the same as that of the oil pipe head cross joint 10 at the joint of the valve seat 17, the left end of the valve seat 17 is provided with a left through hole coaxially corresponding to the left port 14 of the oil pipe head cross joint 10, the right end of the valve seat 17 is provided with a right through hole coaxially corresponding to the right port 15 of the oil pipe head cross joint 10, the valve plate 11 traverses the valve seat 17 through the left through hole and the right through hole, and the valve plate 11 is provided with a valve hole 18 which can enable the upper port 13 of the oil pipe head cross joint 10 to be communicated with the lower port thereof and has.
The valve seat 17 may be of a two-lobe configuration to facilitate disassembly and assembly.
The valve seat 17 supports the valve plate 11, and when the main control gate valve is fully opened, the valve hole 18 of the main control gate valve is consistent with the drift diameter of the oil pipe head cross 10 (at the main channel 16 of the oil pipe head cross connected with the valve seat 17) so as not to influence the conventional operation.
The hydraulic driving mechanism achieves the purpose of pressure control by controlling the communication state of the valve hole 18 of the valve plate 11 and the oil pipe head four-way main channel 16, and meanwhile, when the valve hole 18 on the valve plate 11 is communicated with the oil pipe head four-way main channel 16, the valve hole 18 on the valve plate 11 can be used as a liquid channel, namely, the valve plate 11 integrates a liquid channel and pressure control.
As shown in fig. 1, a left valve cover 19 covering the left port 14 of the tubing head four-way 10 is fixedly and hermetically mounted on the outer side of the left port 14 of the tubing head four-way 10, a right valve cover 20 covering the right port 15 of the tubing head four-way 10 is fixedly and hermetically mounted on the outer side of the right port 15 of the tubing head four-way 10, a left stepped hole 21 which is narrow at the left and wide at the right and is axially and correspondingly communicated with the left through hole is transversely arranged on the left valve cover 19, a right stepped hole 22 which is wide at the left and narrow at the right and is axially and correspondingly communicated with the right through hole is transversely arranged on the right valve cover 20, and the valve plate 11 sequentially passes through the left stepped hole 21; the left end of the valve plate 11 is fixedly connected with a piston rod 24 of the hydraulic driving mechanism.
The left valve cover 19 and the right valve cover 20 support the valve plate 11, and the wide-diameter sections of the left stepped hole 21 and the right stepped hole 22 form annular cavities, so that the valve plate 11 can move left and right, and pressure build-up is prevented.
As shown in the attached fig. 1 and 2, the hydraulic driving mechanism includes a hydraulic cylinder, a piston 23 and a piston rod 24, the hydraulic cylinder includes a hydraulic cylinder body 30 and a cylinder cover 31, the cylinder cover 31 is fixedly and hermetically mounted to the left portion of the hydraulic cylinder body 30, a hydraulic chamber 25 is formed between the cylinder cover 31 and the hydraulic cylinder body 30, the piston rod 24 is disposed in the hydraulic chamber 25 in a manner coaxial with the valve plate 11, the piston 23 is fixedly mounted to the outer side of the piston rod 24, the left side of the hydraulic cylinder body 30 is fixedly and hermetically connected to a left valve cover 19, the left side of the hydraulic cylinder body 30 is provided with a left connecting hole 29 axially corresponding to the left port 14, the side wall of the hydraulic cylinder body 30 corresponding to the left end of the hydraulic chamber 25 is provided with an oil inlet 26, the side wall of the hydraulic cylinder body 30 corresponding to the right end of the hydraulic chamber 25 is provided with an oil outlet 41, the cross section of the left end of the piston 23 is narrow right wide, a right boosting hydraulic cavity 28 is formed between the outside of the right end of the piston 23 and the inner wall surface of the hydraulic cylinder 30; the left end of the valve plate 11 passes through the left connecting hole 29 and then is fixedly connected with the right end of the piston rod 24, a telescopic hole 32 axially corresponding to the piston rod 24 is arranged on the cylinder cover 31, and a left valve cover 33 surrounding the telescopic hole 32 is arranged on the cylinder cover 31 outside the telescopic hole 32;
the manual driving mechanism comprises a left manual mechanism and a right manual mechanism, the left manual mechanism comprises a hand wheel 42 and a left threaded rod 44, the left part of the left valve cover 33 is provided with a threaded section, the left threaded rod 44 is fixedly installed in the left valve cover 33, the left end of the left threaded rod 44 extends out of the left valve cover 33 from the left side of the left valve cover 33 and then is fixedly installed with the hand wheel 42, the right end of the left threaded rod 44 is abutted against the right end of the piston rod 24, and the right end of the left valve cover 33 is fixedly installed on the cylinder cover 31 through a locking screw 45; the right hand-operated mechanism comprises a right threaded rod 46 and a right valve cover 36, the right valve cover 36 covering the right end of the valve plate 11 is fixedly mounted on the right valve cover 20, a threaded section is formed in the right portion of the right valve cover 36, the left end of the right valve cover 36 is fixedly mounted on the right valve cover 20 through a locking screw 45, the right portion of the right threaded rod 46 is fixedly mounted in the right valve cover 36, and the left end of the right threaded rod 46 is abutted to the right end of the valve plate 11.
Fig. 1 shows the oil pipe head four-way main passage 16 in a communicating state (i.e., an open valve state), i.e., the oil pipe head four-way main passage 16 communicates with the valve hole 18 of the valve plate 11. The following description will be made with the connected state in fig. 1 as the initial state.
When the valve needs to be closed (the oil pipe head four-way main channel 16 is blocked), the valve can be closed only by a hydraulic driving mechanism, hydraulic oil is pumped in through the oil outlet 41, the piston 23 moves leftwards under the action of the hydraulic oil, and the piston 23 drives the piston rod 24 to move leftwards, so that the valve plate 11 is driven to move leftwards until the valve hole 18 in the valve plate 11 is completely staggered with the oil pipe head four-way main channel 16, and the oil pipe head four-way main channel 16 is blocked; while the piston 23 is moving leftward, the hydraulic oil in the left hydraulic chamber 25 of the piston 23 is discharged through the oil inlet 26, thereby completing the valve-closing operation;
the valve can be closed by the hydraulic driving mechanism through the assistance of the right manual mechanism, and the valve can be closed by the hydraulic driving mechanism, and the right threaded rod 46 can be pushed leftwards, so that the valve closing speed is accelerated.
It is also possible to close the valve by means of a right hand mechanism only, in which case the hydraulic drive mechanism is not operated and only pushes the right threaded rod 46 to the left until the valve is closed.
When the valve needs to be opened, the valve can be opened only by the hydraulic driving mechanism, hydraulic oil is pumped in through the oil inlet 26, the valve plate 11 moves rightwards until the valve hole 18 in the valve plate 11 is vertically and correspondingly communicated with the oil pipe head four-way main channel 16, and therefore the valve opening operation is completed;
the left hand-operated mechanism can assist the hydraulic driving mechanism to open the valve, and the left threaded rod 44 can be pushed rightwards until the valve plate 11 moves rightwards to reach the state shown in fig. 1 while the hydraulic driving mechanism opens the valve;
it is also possible to open the valve only by means of the left-hand mechanism, and at this time, the hydraulic drive mechanism is not operated, and only the left threaded rod 44 is pushed rightward until the valve plate 11 reaches the state shown in fig. 1.
The left boosting hydraulic cavity 27 is arranged to facilitate hydraulic oil to push the piston 23 which is moved to the left end of the hydraulic cavity 25 to the right; the provision of right boost hydraulic chamber 28 facilitates hydraulic oil to push piston 23 to the right of hydraulic chamber 25 to the left.
As shown in fig. 1 and 2, a left sealing groove with an opening facing to the left is arranged at the narrow diameter section of the left stepped hole 21, a sealing element 34 is fixedly installed in the left sealing groove, the sealing element 34 adopts spring energy storage sealing packing or a spring energy storage sealing ring, and a sealing gland 35 is fixedly installed in the left sealing groove at the outer end of the sealing element 34; a right sealing groove with a rightward opening is formed in the narrow diameter section of the right stepped hole 22, a sealing element 34 is fixedly installed in the right sealing groove, a sealing gland 35 is fixedly installed in the right sealing groove at the outer end of the sealing element 34, and a right valve cover 36 for covering the right end of the valve plate 11 is fixedly installed on the right valve cover 20 on the outer side of the right sealing groove; at least one sealing ring 37 is arranged between the outer sides of the valve seats 17 above and below the valve plate 11 and the inner side of the oil pipe head four-way joint 10.
The valve rod seal adopts a spring energy storage seal structure (spring energy storage seal packing or a spring energy storage seal ring), and the seal reliability of the built-in master control gate valve is greatly improved.
As shown in fig. 1, radial locking holes 38 are circumferentially distributed at the upper port 13 of the tubing head four-way joint 10; and a radial grease injection hole 39 and a radial pressure relief hole 40 are circumferentially distributed at the lower port of the tubing head four-way joint 10.
The BT seal ring 43 can realize the functions of grease injection and sealing of the sleeve.
The spring energy storage sealing filler, the spring energy storage sealing ring and the BT sealing ring 43 are all sealing parts which are well known and used.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
The utility model discloses best embodiment's use:
before fracturing, a hydraulic flat gate valve locking and manual control device is arranged in the tubing head on a casing flange, a fracturing tree is arranged at an upper port 13 of a tubing head cross 10 through flange connection, a hydraulic driving mechanism drives a valve plate 11 to move to the position shown in figure 1, so that a valve hole 18 in the valve plate 11 is communicated with a main channel 16 of the tubing head cross (namely, a main control gate valve is opened), and fracturing operation is carried out.
After fracturing, the hydraulic driving mechanism drives the valve plate 11 to move leftwards, so that the valve hole 18 in the valve plate 11 and the four-way main channel 16 of the tubing head are completely staggered (namely, the main control gate valve is closed), the pressure of a shaft is controlled, a fracturing tree is disassembled and an oil tree is installed, and the main control gate valve is opened to perform reverse drainage and self-spraying production after a well is sealed. When the rotary pumping is needed in the later stage, the main control gate valve is closed, the Christmas tree is dismantled and the pressurized operation device (the prior art) is installed, the hydraulic parallel gate valve (the main control gate valve) arranged in the tubing head cross 10 is completely opened, the oil well pump and the oil pipe are put in, when the last oil pipe is put down, the tubing hanger is connected and is seated in the tubing head cross 10, the above Christmas tree part is installed, and the rotary pumping preparation is completed.
Claims (6)
1. A locking and manual control device of a hydraulic flat gate valve arranged in an oil pipe head is characterized by comprising an oil pipe head four-way and a master control gate valve, wherein the master control gate valve comprises a valve plate and a hydraulic driving mechanism capable of controlling the valve plate to open and close a main channel of the oil pipe head four-way; a left port and a right port which are symmetrical left and right are arranged on the tubing head four-way joint between the upper part of the front port and the rear port of the tubing head four-way joint and the lower part of the upper port of the tubing head four-way joint, and the left port and the right port are communicated through a main channel of the tubing head four-way joint; the valve plate traverses the right port of the four-way oil pipe head from the left port of the four-way oil pipe head, and the hydraulic driving mechanism is fixedly connected with the left port of the four-way oil pipe head; the oil pipe head four-way is provided with a manual driving mechanism.
2. The locking and manual control device of the built-in hydraulic flat gate valve of the tubing head according to claim 1, wherein the four-way joint of the tubing head corresponding to the left and right ports is provided with a mounting ring groove, and a valve seat is fixedly mounted in the mounting ring groove; the inner diameter of the valve seat is the same as that of the oil pipe head cross joint at the joint of the valve seat and the valve seat, the left end of the valve seat is provided with a left through hole coaxially corresponding to the left port of the oil pipe head cross joint, the right end of the valve seat is provided with a right through hole coaxially corresponding to the right port of the oil pipe head cross joint, the valve plate transversely penetrates through the valve seat through the left through hole and the right through hole, and the valve plate is provided with a valve hole which enables the upper port of the oil pipe head cross joint to be communicated with;
a left valve cover for covering the left port of the oil pipe head four-way joint is fixedly and hermetically arranged on the outer side of the left port of the oil pipe head four-way joint, a right valve cover for covering the right port of the oil pipe head four-way joint is fixedly and hermetically arranged on the outer side of the right port of the oil pipe head four-way joint, a left stepped hole which is narrow at the left and wide at the right and is axially and correspondingly communicated with the left through hole is transversely arranged on the left valve cover, a right stepped hole which is wide at the left and narrow at the right and is axially and correspondingly communicated with the right through hole is transversely arranged on the right valve cover, and the valve; the left end of the valve plate is fixedly connected with a piston rod of the hydraulic driving mechanism;
the hydraulic driving mechanism comprises a hydraulic cylinder, a piston and a piston rod, the hydraulic cylinder comprises a hydraulic cylinder body and a cylinder cover, the cylinder cover and the left part of the hydraulic cylinder body are fixedly installed together in a sealing mode, a hydraulic cavity is formed between the cylinder cover and the hydraulic cylinder body, the piston rod is arranged in the hydraulic cavity in a coaxial mode with the valve plate, the piston is fixedly installed on the outer side of the piston rod, the left side of the hydraulic cylinder body is fixedly connected with a left valve cover in a sealing, a left connecting hole axially corresponding to the left port is arranged on the left side of the hydraulic cylinder body, an oil inlet is arranged on the side wall of the hydraulic cylinder body corresponding to the left end of the hydraulic cavity, an oil outlet is arranged on the side wall of the hydraulic cylinder body corresponding to the right end of the hydraulic cavity, the cross section of the left end of the piston is narrow at the left and wide at the right, the cross section of the right end of the piston is narrow at the right and wide at the right, a left boosting hydraulic cavity is formed between the outer part of the left end of the piston and the inner wall surface of the hydraulic cylinder body, and a right boosting hydraulic cavity is formed between the outer part of the right end of the piston and the inner wall; the left end of the valve plate penetrates through the left connecting hole and then is fixedly connected with the right end of the piston rod, a telescopic hole axially corresponding to the piston rod is formed in the cylinder cover, and a left valve cover surrounding the telescopic hole is arranged on the cylinder cover outside the telescopic hole;
the manual driving mechanism comprises a left manual mechanism and a right manual mechanism, the left manual mechanism comprises a hand wheel and a left threaded rod, a threaded section is arranged in the left part of the left valve cover, the left threaded rod is fixedly installed in the left valve cover, the left end of the left threaded rod extends out of the left valve cover from the left side of the left valve cover and then is fixedly installed with the hand wheel, the right end of the left threaded rod is abutted against the right end of the piston rod, and the right end of the left valve cover is fixedly installed on the cylinder cover through a locking screw; the right hand-operated mechanism comprises a right threaded rod and a right valve cover, the right valve cover covering the right end of the valve plate is fixedly mounted on the right valve cover, a threaded section is arranged in the right part of the right valve cover, the left end of the right valve cover is fixedly mounted on the right valve cover through a locking screw, the right part of the right threaded rod is fixedly mounted in the right valve cover, and the left end of the right threaded rod is abutted to the right end of the valve plate.
3. The locking and manual control device of the hydraulic flat gate valve arranged in the tubing head according to claim 2, wherein the narrow diameter section of the left stepped hole is provided with a left sealing groove with an opening facing to the left, a sealing element is fixedly arranged in the left sealing groove, the sealing element is spring energy storage sealing filler or a spring energy storage sealing ring, and a sealing gland is fixedly arranged in the left sealing groove at the outer end of the sealing element; or/and a right sealing groove with a rightward opening is arranged at the narrow diameter section of the right stepped hole, a sealing element is fixedly arranged in the right sealing groove, and a sealing gland is fixedly arranged in the right sealing groove at the outer end of the sealing element; or/and at least one sealing ring is arranged between the outer sides of the valve seats above and below the valve plate and the inner side of the four-way pipe head.
4. The locking and manual control device of the built-in hydraulic flat gate valve of the tubing head according to claim 1, 2 or 3, characterized in that the left port, the front port, the right port and the rear port of the tubing head cross are distributed in a staggered manner on the horizontal plane.
5. The built-in hydraulic flat gate valve locking and manual control device of the tubing head according to claim 1, 2 or 3, characterized in that radial locking holes are circumferentially distributed at the upper port of the four-way joint of the tubing head; or/and radial grease injection holes and radial pressure relief holes are distributed at the lower port of the four-way joint of the tubing head along the circumference.
6. The built-in hydraulic flat gate valve locking and manual control device of the tubing head as claimed in claim 4, wherein radial locking holes are circumferentially distributed at the upper port of the four-way joint of the tubing head; or/and radial grease injection holes and radial pressure relief holes are distributed at the lower port of the four-way joint of the tubing head along the circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922037479.7U CN210949951U (en) | 2019-11-22 | 2019-11-22 | Built-in hydraulic flat gate valve locking and manual control device of tubing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922037479.7U CN210949951U (en) | 2019-11-22 | 2019-11-22 | Built-in hydraulic flat gate valve locking and manual control device of tubing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210949951U true CN210949951U (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922037479.7U Active CN210949951U (en) | 2019-11-22 | 2019-11-22 | Built-in hydraulic flat gate valve locking and manual control device of tubing head |
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| Country | Link |
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| CN (1) | CN210949951U (en) |
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2019
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