CN210950015U - Oil pipe head device with built-in manual flat valve - Google Patents
Oil pipe head device with built-in manual flat valve Download PDFInfo
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- CN210950015U CN210950015U CN201922037689.6U CN201922037689U CN210950015U CN 210950015 U CN210950015 U CN 210950015U CN 201922037689 U CN201922037689 U CN 201922037689U CN 210950015 U CN210950015 U CN 210950015U
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Abstract
The utility model relates to an oil pipe head technical field is a built-in manual wafer valve oil pipe head device, 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 valve plate switch oil pipe head cross main entrance's bevel gear drive mechanism. The utility model has the advantages of reasonable and compact structure, convenient to use, it is integrative with oil pipe head cross and the integration of master control gate valve, and the valve plate of master control gate valve has greatly reduced whole height through crossing in arranging oil pipe head cross in left end mouth and the right-hand member mouth, and its oil collecting pipe head cross and master control gate valve function are in one's body, through the connected state of bevel gear drive mechanism control oil pipe head cross main channel, can realize the control to pit shaft pressure promptly.
Description
Technical Field
The utility model relates to an oil pipe head technical field is a built-in manual wafer valve oil pipe head device.
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 a production tree with the same specification as a fracturing wellhead is installed for reverse discharge and production of fracturing fluid. However, because the shaft of the technology is not provided with an oil pipe, the pressure of the casing pipe cannot be controlled, one or two flat gate valves (main control gate valves) with the nominal diameter of 180mm are required to be reserved between the wellhead and the Christmas tree to control the pressure of the shaft, and the design of the large flat gate valve at the position brings great troubles to later-stage production operation and also causes great waste of resources of the Christmas tree.
Disclosure of Invention
The utility model provides an oil pipe head device with a built-in manual flat valve, which overcomes the defects of the prior art and can effectively solve the problem of overhigh height of the existing Christmas tree; the utility model discloses with main control gate valve and oil pipe head cross design as an organic whole.
The technical scheme of the utility model is realized through following measure: an oil pipe head device with a built-in manual flat valve comprises an oil pipe head four-way valve and a master control gate valve, wherein the master control gate valve comprises a valve plate and a bevel gear transmission mechanism capable of controlling the valve plate to open and close a main channel of the oil pipe head four-way valve; 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 crosses the right port of the four-way pipe head from the left port of the four-way pipe head, and the bevel gear transmission mechanism is fixedly connected with the left port of the four-way pipe head through a connecting device.
The following are further optimization or/and improvement of the technical scheme of the utility model:
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; 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 installed 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, 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 the lower port of.
The left valve cover for covering the left port of the oil pipe head four-way joint is fixedly installed on the outer side of the left port of the oil pipe head four-way joint in a sealing mode, the right valve cover for covering the right port of the oil pipe head four-way joint is fixedly installed on the outer side of the right port of the oil pipe head four-way joint in a sealing mode, a left stepped hole which is narrow in left and wide in right is transversely arranged on the left valve cover and is axially and correspondingly communicated with the left through hole, a right stepped hole which is wide in left and narrow in right is transversely arranged on the right valve cover and is axially and correspondingly communicated with the right through hole, and the valve plate; the connecting device comprises a connecting sleeve, the right part of the connecting sleeve is fixedly connected with the left end of the left valve cover in a sealing mode, and the left part of the connecting sleeve is fixedly connected with the right part of the bevel gear transmission mechanism.
The left part of the connecting sleeve is fixedly connected with an installation box surrounding the bevel gear transmission mechanism, the installation box comprises a left groove body with a rightward opening and a right groove body with a leftward opening, the right groove body and the left part of the connecting sleeve are fixedly installed, the right lower end of the left groove body and the left lower end of the right groove body are fixedly installed, an installation cavity for accommodating the bevel gear transmission mechanism is formed between the left groove body and the right groove body, and the bevel gear transmission mechanism is arranged in the installation cavity; the bevel gear transmission mechanism comprises a bevel gear transmission assembly and a ball screw pair; the bevel gear transmission component comprises a bevel gear and a rotating rod, and the bevel gear is fixed at the bottom of the rotating rod; the ball screw pair comprises a screw and a nut which is arranged on the screw in a matched mode, and the right end of the screw is fixedly arranged with the left end of the valve plate; a vertical hole capable of enabling the rotating rod to penetrate is formed between the upper right end of the left groove body and the upper left end of the right groove body, a bearing is mounted outside the rotating rod on the inner side of the mounting box above the bevel gear, the lead screw is transversely arranged in the mounting cavity, the nut is mounted in the mounting box through a nut seat, a rotating cylinder taking the lead screw as a rotating shaft is mounted on the outer side of the nut seat, a gear portion meshed with the bevel gear is arranged at the left end of the rotating cylinder, and the bevel gear is connected with the left end of the rotating cylinder in a matched mode through the gear portion.
The upper part of the rotating rod extends out of the mounting box from the vertical hole, and a hand wheel for rotating the rotating rod is arranged at the top of the rotating rod; an indication rod is axially fixed at the left end of the lead screw, an indication ring is arranged at the left end of the indication rod, a shielding cover which is coaxial with the lead screw and can cover the indication rod is arranged on the left groove body, and an observation port at the position of the indication ring is arranged on the shielding cover; a protective valve cover is arranged on the right valve cover outside the right stepped hole.
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 the advantages of reasonable and compact structure, convenient to use, it is integrative with oil pipe head cross and the integration of master control gate valve, and the valve plate of master control gate valve has greatly reduced whole height through crossing in arranging oil pipe head cross in left end mouth and the right-hand member mouth, and its oil collecting pipe head cross and master control gate valve function are in one's body, through the connected state of bevel gear drive mechanism control oil pipe head cross main channel, can realize the control to pit shaft pressure promptly.
Drawings
Fig. 1 is a schematic sectional view of the preferred embodiment of the present invention.
The codes in the figures are respectively: 10 is a valve plate, 11 is a front port, 12 is a left port, 13 is a right port, 14 is a tubing head four-way, 15 is a tubing head four-way main channel, 16 is a valve seat, 17 is a BT seal ring, 18 is a radial pressure relief hole, 19 is a valve hole, 20 is a left valve cover, 21 is a right valve cover, 22 is a left stepped hole, 23 is a right stepped hole, 24 is a connecting sleeve, 25 is a left groove body, 26 is a right groove body, 27 is a mounting cavity, 28 is a bevel gear, 29 is a rotating rod, 30 is a lead screw, 31 is a nut, 32 is a bearing, 33 is a rotating cylinder, 34 is a gear part, 35 is a hand wheel, 36 is an indicating rod, 37 is an indicating ring, 38 is a shielding cover, 39 is a protective valve cover, 40 is a sealing element, 41 is a sealing gland, 42 is a seal ring, 43 is a radial locking hole, 44 is a radial grease injection hole.
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 position relation of front, back, up, down, left, right, etc. is determined according to the layout direction of the attached figure 1 of the specification.
The invention will be further described with reference to the following examples and drawings:
as shown in the attached drawing 1, the oil pipe head device with the built-in manual flat valve comprises an oil pipe head four-way 14 and a main control gate valve, wherein the main control gate valve comprises a valve plate 10 and a bevel gear transmission mechanism capable of controlling the valve plate 10 to open and close an oil pipe head four-way main channel 15; a left port 12 and a right port 13 which are symmetrical left and right are arranged on the tubing head four-way joint 14 between the upper part of the front port 11 and the rear port of the tubing head four-way joint 14 and the lower part of the upper port of the tubing head four-way joint 14, and the left port 12 and the right port 13 are communicated through a main channel 15 of the tubing head four-way joint; the valve plate 10 crosses the right port 13 of the four-way pipe head 14 from the left port 12 of the four-way pipe head 14, and the bevel gear transmission mechanism is fixedly connected with the left port of the four-way pipe head 14 through a connecting device.
The oil collecting pipe head four-way valve integrates an oil pipe head four-way valve 14 and a main control gate valve, a valve plate 10 of the main control gate valve is arranged in the oil pipe head four-way valve 14 by penetrating through a left port 12 and a right port 13, the overall height is greatly reduced, the oil collecting pipe head four-way valve 14 and the main control gate valve are integrated, and the communication state of a main channel 15 of the oil pipe head four-way valve is controlled through a bevel gear transmission mechanism, so that the pressure of a shaft can be controlled.
The front port 11 and the rear port of the tubing head four-way joint 14 are fixedly connected with a casing valve according to the conventional connection mode, a tubing hanger is installed at the position close to the upper port inside the tubing head four-way joint 14 according to the conventional installation mode, and a casing is installed at the lower port of the tubing head four-way joint 14.
The oil pipe head four-way main channel 15 is a vertical channel of the oil pipe head four-way 14, the oil pipe head four-way main channel 15 below the valve plate 10 is a sleeve channel, and the sleeve channel is arranged below the valve plate 10 to reserve a sleeve emergency channel.
The valve plate 10 is designed at the position between the casing passage of the four-way pipe head 14 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 pressure operation device in the later-stage conversion production.
The oil pipe head device with the built-in manual flat valve can be further optimized or/and improved according to actual needs:
as shown in the attached figure 1, in order to facilitate the disassembly and assembly of a sleeve valve and the operation of a bevel gear transmission mechanism and further reduce the overall height of the device, a left port 12, a front port 11, a right port 13 and a rear port of a tubing head four-way joint 14 are distributed on a horizontal plane in a staggered manner; an installation ring groove is arranged in the tubing head four-way joint 14 corresponding to the left and right ports 13, and a valve seat 16 is fixedly arranged in the installation ring groove; the inner diameter of the valve seat 16 is the same as that of the oil pipe head four-way 14 at the joint of the valve seat 16, the left end of the valve seat 16 is provided with a left through hole coaxially corresponding to the left port 12 of the oil pipe head four-way 14, the right end of the valve seat 16 is provided with a right through hole coaxially corresponding to the right port 13 of the oil pipe head four-way 14, the valve plate 10 transversely penetrates through the valve seat 16 through the left through hole and the right through hole, and the valve hole 19 which enables the upper port of the oil pipe head four-way 14 to be communicated with the lower port of the oil pipe.
The valve seat 16 may be of a two-lobe configuration to facilitate removal.
When the left port 12, the front port 11, the right port 13 and the rear port of the tubing head four-way joint 14 are distributed along the horizontal plane at 90 degrees, the operation is most convenient, and the overall height reaches the lowest value.
The valve seat 16 supports the valve plate 10, and when the main control gate valve is fully opened, the valve hole 19 of the main control gate valve is consistent with the drift diameter of the oil pipe head four-way 14 (at the main channel 15 of the oil pipe head four-way connected with the valve seat 16) so as not to influence the conventional operation.
As shown in fig. 1, a left valve cover 20 for covering the left port 12 of the tubing head four-way 14 is fixedly and hermetically mounted on the outer side of the left port 12 of the tubing head four-way 14, a right valve cover 21 for covering the right port 13 of the tubing head four-way 14 is fixedly and hermetically mounted on the outer side of the right port 13 of the tubing head four-way 14, a left stepped hole 22 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 20, a right stepped hole 23 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 21, and the valve plate 10 sequentially passes through the left stepped hole; the connecting device comprises a connecting sleeve 24, the right part of the connecting sleeve 24 is fixedly connected with the left end of the left valve cover 20 in a sealing manner, and the left part of the connecting sleeve 24 is fixedly connected with the right part of the bevel gear transmission mechanism.
The left valve cover 20 and the right valve cover 21 support the valve plate 10, and the wide-diameter sections of the left stepped hole 22 and the right stepped hole 23 form annular cavities, so that the valve plate 10 can move left and right, and pressure build-up is prevented.
As shown in fig. 1, a mounting box surrounding the bevel gear transmission mechanism is fixedly connected to the left portion of the connecting sleeve 24, the mounting box includes a left groove body 25 with a rightward opening and a right groove body 26 with a leftward opening, the right groove body 26 is fixedly mounted to the left portion of the connecting sleeve 24, the right lower end of the left groove body 25 and the left lower end of the right groove body 26 are fixedly mounted, a mounting cavity 27 for accommodating the bevel gear transmission mechanism is formed between the left groove body 25 and the right groove body 26, and the bevel gear transmission mechanism is arranged in the mounting cavity 27; the bevel gear transmission mechanism comprises a bevel gear transmission component and a ball screw 30 pair; the bevel gear transmission assembly comprises a bevel gear 28 and a rotating rod 29, wherein the bevel gear 28 is fixed at the bottom of the rotating rod 29; the ball screw 30 pair comprises a screw 30 and a nut 31 which is arranged on the screw 30 in a matching way, and the right end of the screw 30 is fixedly arranged with the left end of the valve plate 10; a vertical hole through which the rotating rod 29 can pass is formed between the upper right end of the left groove body 25 and the upper left end of the right groove body 26, a bearing 32 is installed outside the rotating rod 29 on the inner side of the installation box above the bevel gear 28, the lead screw 30 is transversely arranged in the installation cavity 27, the nut 31 is installed in the installation box through a nut seat 45, a rotating cylinder 33 taking the lead screw 30 as a rotating shaft is installed on the outer side of the nut seat 45, a gear part 34 meshed with the bevel gear 28 is arranged at the left end of the rotating cylinder 33, and the bevel gear 28 is connected with the left end of the rotating cylinder 33 in a matched mode through the gear part 34.
When the main channel of the tubing head four-way 14 needs to be closed, the rotating rod 29 is rotated to drive the bevel gear 28 to rotate, the bevel gear 28 rotates by taking the axis of the rotating rod 29 as the center, the rotating cylinder 33 is driven to rotate by taking the screw rod 30 as the central axis, the rotating cylinder 33 drives the nut 31 to rotate around the screw rod 30 through the nut seat 45, the screw rod 30 is driven to move rightwards by the rotation of the nut 31, and therefore the valve plate 10 moves rightwards, namely the valve hole 19 in the valve plate 10 moves rightwards from the tubing head four-way main channel 15 to the right port 13, the valve hole 19 in the valve plate 10 is staggered with the tubing head four-way main channel 15, and the.
Otherwise, the oil pipe head four-way main channel 15 is communicated.
The bevel gear and the ball screw 30 pair transmission design is adopted, so that the opening and closing torque of a manual large flat gate valve (a main control gate valve plate 10) is greatly reduced.
As shown in fig. 1, the upper part of the rotating rod 29 extends out of the installation box from the vertical hole, and a hand wheel 35 for rotating the rotating rod 29 is arranged at the top of the rotating rod 29; an indication rod 36 is axially fixed at the left end of the lead screw 30, an indication ring 37 is arranged at the left end of the indication rod 36, a shielding cover 38 which is coaxial with the lead screw 30 and can shield the indication rod 36 is arranged on the left groove body 25, and an observation port at the position of the indication ring 37 is arranged on the shielding cover 38; a protective valve cover 39 is provided on the right valve cover 21 outside the right stepped hole 23.
The opening and closing state of the built-in master control gate valve can be known by observing the position of the indicating ring 37 through the observation port.
As shown in fig. 1, a left sealing groove with an opening facing to the left is arranged at the narrow diameter section of the left stepped hole 22, a sealing element 40 is fixedly installed in the left sealing groove, the sealing element 40 adopts spring energy storage sealing packing or a spring energy storage sealing ring 42, and a sealing gland 41 is fixedly installed in the left sealing groove at the outer end of the sealing element 40; a right sealing groove with a rightward opening is formed in the narrow diameter section of the right stepped hole 23, a sealing element 40 is fixedly installed in the right sealing groove, and a sealing gland 41 is fixedly installed in the right sealing groove at the outer end of the sealing element 40; at least one sealing ring 42 is arranged between the outer sides of the valve seats 16 above and below the valve plate 10 and the inner side of the tubing head cross 14.
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 43 are circumferentially distributed at the upper port of the tubing head four-way joint 14; and a radial grease injection hole 44 and a radial pressure relief hole 18 are circumferentially distributed at the lower port of the tubing head four-way joint 14.
The spring energy storage sealing filler, the spring energy storage sealing ring and the BT sealing ring 17 are all known and used sealing elements.
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 wellhead casing flange is fixedly connected through a lower port of a tubing head four-way joint 14 of the device, casing valves are installed at ports on the front side and the rear side of the tubing head four-way joint 14 of the device, and a fracturing tree is installed on an upper port of the tubing head four-way joint 14 of the device to perform fracturing operation; after fracturing is finished, the hand wheel 35 on the bevel gear transmission mechanism is rotated to close the main control gate valve on the tubing head device, so that the pressure of a shaft is controlled, the fracturing tree is disassembled and the Christmas tree is installed, and the main control gate valve is opened to perform reverse drainage and self-injection production after a well is closed. And when the rotary pumping is needed at the later stage, closing a manual parallel gate valve (a main control gate valve) arranged in the tubing head four-way 14, dismantling the Christmas tree and installing a pressurized operation device, completely opening the manual parallel gate valve arranged in the tubing head four-way 14, lowering an oil pump and an oil pipe, connecting a tubing hanger and sealing the tubing hanger in the tubing head four-way 14 when the last oil pipe is lowered, and installing a tubing head reducing joint and the above Christmas tree part on the upper port of the tubing head four-way 14 to finish the preparation of the rotary pumping.
Claims (10)
1. An oil pipe head device with a built-in manual flat valve is characterized by comprising an oil pipe head four-way valve and a master control gate valve, wherein the master control gate valve comprises a valve plate and a bevel gear transmission mechanism capable of controlling the valve plate to open and close a main channel of the oil pipe head four-way valve; 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 crosses the right port of the four-way pipe head from the left port of the four-way pipe head, and the bevel gear transmission mechanism is fixedly connected with the left port of the four-way pipe head through a connecting device.
2. The built-in manual flat valve tubing head device of claim 1, wherein the left, front, right and rear ports of the tubing head cross-piece are staggered in a horizontal plane.
3. The oil pipe head device with the built-in manual flat valve according to claim 1 or 2, wherein the four-way joint of the oil pipe head corresponding to the left and right ports is internally provided with a mounting ring groove, and a valve seat is fixedly arranged 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, 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 the lower port of.
4. The oil pipe head device of the built-in manual flat valve according to claim 3, wherein a left valve cover for covering the left port of the four-way joint of the oil pipe head is fixedly and hermetically mounted on the outer side of the left port of the four-way joint of the oil pipe head, a right valve cover for covering the right port of the four-way joint of the oil pipe head is fixedly and hermetically mounted on the outer side of the right port of the four-way joint of the oil pipe head, 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; the connecting device comprises a connecting sleeve, the right part of the connecting sleeve is fixedly connected with the left end of the left valve cover in a sealing mode, and the left part of the connecting sleeve is fixedly connected with the right part of the transmission mechanism.
5. The built-in manual flat valve tubing head device as claimed in claim 4, wherein the left part of the connecting sleeve is fixedly connected with an installation box surrounding the bevel gear transmission mechanism, the installation box comprises a left groove body with a rightward opening and a right groove body with a leftward opening, the right groove body is fixedly installed with the left part of the connecting sleeve, the right lower end of the left groove body and the left lower end of the right groove body are fixedly installed, an installation cavity for accommodating the bevel gear transmission mechanism is formed between the left groove body and the right groove body, and the bevel gear transmission mechanism is arranged in the installation cavity; the bevel gear transmission mechanism comprises a bevel gear transmission assembly and a ball screw pair; the bevel gear transmission component comprises a bevel gear and a rotating rod, and the bevel gear is fixed at the bottom of the rotating rod; the ball screw pair comprises a screw and a nut which is arranged on the screw in a matched mode, and the right end of the screw is fixedly arranged with the left end of the valve plate; a vertical hole capable of enabling the rotating rod to penetrate is formed between the upper right end of the left groove body and the upper left end of the right groove body, a bearing is mounted outside the rotating rod on the inner side of the mounting box above the bevel gear, the lead screw is transversely arranged in the mounting cavity, the nut is mounted in the mounting box through a nut seat, a rotating cylinder taking the lead screw as a rotating shaft is mounted on the outer side of the nut seat, a gear portion meshed with the bevel gear is arranged at the left end of the rotating cylinder, and the bevel gear is connected with the left end of the rotating cylinder in a matched mode through the gear portion.
6. The oil pipe head device with the built-in manual flat valve as claimed in claim 5, wherein the upper part of the rotating rod extends out of the mounting box from the vertical hole, and a hand wheel for rotating the rotating rod is arranged at the top of the rotating rod; or/and an indicating rod is axially fixed at the left end of the lead screw, an indicating ring is arranged at the left end of the indicating rod, a shielding cover which is coaxial with the lead screw and can cover the indicating rod is arranged on the left groove body, and an observation port at the position of the indicating ring is arranged on the shielding cover; or/and a protective valve cover is arranged on the right valve cover outside the right stepped hole.
7. The oil pipe head device of the built-in manual flat valve according to claim 4, 5 or 6, 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 installed 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 installed 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.
8. The tubing head device with the built-in manual flat valve according to claim 1, 2, 4, 5 or 6, 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.
9. The oil pipe head device with the built-in manual flat valve as claimed in claim 3, wherein radial locking holes are circumferentially distributed at the upper port of the four-way joint of the oil pipe 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.
10. The oil pipe head device with the built-in manual flat valve as claimed in claim 7, wherein radial locking holes are circumferentially distributed at the upper port of the four-way joint of the oil pipe 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 |
|---|---|---|---|
| CN201922037689.6U CN210950015U (en) | 2019-11-22 | 2019-11-22 | Oil pipe head device with built-in manual flat valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922037689.6U CN210950015U (en) | 2019-11-22 | 2019-11-22 | Oil pipe head device with built-in manual flat valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210950015U true CN210950015U (en) | 2020-07-07 |
Family
ID=71376519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922037689.6U Active CN210950015U (en) | 2019-11-22 | 2019-11-22 | Oil pipe head device with built-in manual flat valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210950015U (en) |
-
2019
- 2019-11-22 CN CN201922037689.6U patent/CN210950015U/en active Active
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