CN216077042U - Quick connection and disassembly structure for wellhead device - Google Patents
Quick connection and disassembly structure for wellhead device Download PDFInfo
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- CN216077042U CN216077042U CN202122224350.4U CN202122224350U CN216077042U CN 216077042 U CN216077042 U CN 216077042U CN 202122224350 U CN202122224350 U CN 202122224350U CN 216077042 U CN216077042 U CN 216077042U
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- wellhead
- wellhead device
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- groove
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Abstract
The utility model discloses a structure for quickly connecting and detaching a wellhead device, which comprises: the wellhead device comprises a wellhead device body, wherein a plurality of counter bores and open-loop mounting grooves are arranged on the wellhead device body in a penetrating manner; a transmission mounting mechanism is arranged in the counter bore and comprises an open ring, a transmission screw rod and a pressing cap which are connected from inside to outside; the wellhead device comprises a wellhead device body, wherein a connecting body is arranged inside the wellhead device body, a groove is formed in the periphery of the connecting body, and the driving screw drives the open ring to be embedded into or loosened from the groove in a screwing or unscrewing mode so as to achieve the effects of quick connection and disassembly. The flange joint overcomes the defects by combining the advantages of flange connection and clamping connection, thereby having the characteristics of compact structure, good pressure-bearing performance, reliable sealing, quick installation and disassembly, low upper buckling torque, repeated use, convenient maintenance and the like.
Description
Technical Field
The utility model relates to the technical field of wellhead devices, in particular to a quick connecting and detaching structure for a wellhead device.
Background
With the continuous development of the national industries of oil, natural gas and the like, various wellhead devices are used more and more commonly, and in the current market, contractors and operators continuously search for methods for improving the efficiency and safety of drilling machines.
At present, the connection between the ground and the platform drilling production equipment is mostly flange connection or clamping connection. Each of these connection mechanisms has its advantages, but also has some disadvantages.
In order to meet the industrial requirements, the utility model combines the advantages of flange connection and clamping connection, overcomes the defects of the flange connection and the clamping connection, and has the characteristics of compact structure, good pressure-bearing property, reliable sealing, quick installation and disassembly, low fastening torque, repeated use, convenient maintenance and the like.
SUMMERY OF THE UTILITY MODEL
To overcome the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a quick connect and disconnect structure for a wellhead.
In order to realize the purpose of the utility model, the adopted technical scheme is as follows:
a quick connect and disconnect structure for a wellhead comprising:
the wellhead device comprises a wellhead device body, wherein a plurality of counter bores and open-loop mounting grooves are arranged on the wellhead device body in a penetrating manner;
a transmission mounting mechanism is arranged in the counter bore and comprises an open ring, a transmission screw rod and a pressing cap which are connected from inside to outside;
the wellhead device comprises a wellhead device body, wherein a connecting body is arranged inside the wellhead device body, a groove is formed in the periphery of the connecting body, and the driving screw drives the open ring to be embedded into or loosened from the groove in a screwing or unscrewing mode so as to achieve the effects of quick connection and disassembly.
In a preferred embodiment of the utility model, the counter bores are arranged in three sections, and comprise a first thread section, a stuffing box section and a second thread section.
In a preferred embodiment of the utility model, the inner circle and the outer circle of the press cap are respectively provided with an inner thread section and an outer thread section, the outer thread section is matched with the inner structure of the counter bore, and the press cap is arranged in the counter bore;
the internal thread section is connected with the transmission screw;
and a boss is arranged at the bottom of the pressing cap.
In a preferred embodiment of the utility model, a stuffing is arranged in the stuffing box section and a belleville spring is arranged below the stuffing.
In a preferred embodiment of the utility model, two ends of the transmission screw rod are asymmetrically arranged, and a groove is arranged at the large head end of the transmission screw rod and is connected with the open ring through the groove;
the small end of the transmission screw rod is provided with a connecting thread which is connected with the pressing cap.
In a preferred embodiment of the utility model, first and second mating ring connection grooves are provided between the inside of the wellhead body and the outside of the connection body, with a metal backing ring provided on the contact surface of the second ring connection groove.
In a preferred embodiment of the utility model, an O-ring groove is provided and placed inside the wellhead body.
In a preferred embodiment of the utility model, the cross-section of the groove is a slope of 25 °.
In a preferred embodiment of the present invention, the drive screw is in a flip-chip configuration.
The utility model has the beneficial effects that:
the flange joint overcomes the defects by combining the advantages of flange connection and clamping connection, thereby having the characteristics of compact structure, good pressure-bearing performance, reliable sealing, quick installation and disassembly, low upper buckling torque, repeated use, convenient maintenance and the like.
Drawings
FIG. 1 is a schematic illustration of a quick connect and disconnect configuration for a wellhead according to the present invention.
FIG. 2 is a schematic view of the connection state of the quick connect and disconnect structure for a wellhead of the present invention
FIG. 3 is a schematic illustration of the disassembled state of the quick connect and disconnect structure for a wellhead of the present invention
FIG. 4 is a schematic view of the drive screw of the present invention.
FIG. 5 is a first open-loop diagram of the present invention.
FIG. 6 is a schematic open-loop diagram of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
The quick connecting and disconnecting structure for the wellhead comprises a wellhead body 100, and counterbores 110 and open-loop mounting grooves 130 which are uniformly distributed at 8 positions on the outer circle of the wellhead body 100, wherein the counterbores are arranged on the outer circle of the wellhead body 100.
The counter bore 110 is provided with three sections, including a first thread section, a stuffing box section and a second thread section, wherein the first thread section is a machined M60 thread, and the second thread section is a phi 26 through hole.
A stuffing 111 is provided in the stuffing box section and a belleville spring 112 is provided below the stuffing 111.
Within the counterbore 110 is a drive mounting mechanism 200, the drive mounting mechanism 200 comprising an open ring 210, a drive screw 220 and a pressure cap 230 connected from the inside out.
The advantage that sets up belleville spring 112 lies in when V type packing 111 appears wearing and tearing, and belleville spring 112 can be preferential to compensate and guarantee its leakproofness, when changing V type packing 111, only needs the pine to press cap 230 soon, can change V type packing 111, easy maintenance practices thrift the human cost.
The inner and outer circles of the press cap 230 are respectively provided with an inner and outer thread section, wherein the outer thread section 231 is matched with the inner structure of the counterbore 110, so that the press cap 230 is arranged in the counterbore; the internal thread section 232 is connected to the drive screw 220, and a boss 233 is provided at the bottom of the press cap 230.
With particular emphasis on FIG. 4, the two ends of the driving screw 220 are disposed asymmetrically, wherein the large end of the driving screw 220 is disposed with a groove 221, and is connected to the open ring 210 via the groove 221.
The small end of the drive screw 220 is provided with a connecting thread 222, and is connected with the internal thread section 232 of the pressing cap 230 through the connecting thread 222.
Adopt the flip-chip structure during drive screw 220 installation, when can effectually preventing wellhead assembly body 100 internal pressure from unusually increasing, drive screw 220 is blown out, security when guaranteeing the operation.
The method for installing the transmission installation mechanism 200 in the wellhead device body 100 specifically comprises the following steps:
firstly, respectively installing 8 belleville springs 112 and 8 groups of V-shaped packings 111 in stuffing boxes of 8 counterbores 110 on the outer circle of a wellhead device body 100;
then 8 pressing caps 230 are connected and installed in the counter bore 110 through external thread sections 231, the transmission screw 220 is inversely installed into the counter bore 110 from the inside of the wellhead body 100, the transmission screw 220 is connected with the open ring 210 through a groove 221, and the transmission screw 220 is connected with the pressing caps 230 through connecting threads 222.
The connecting body 300 is arranged inside the wellhead device body 100, the periphery of the connecting body 300 is provided with a groove 310, a first annular connecting groove 101 and a second annular connecting groove 301 which are matched are arranged between the inner side of the wellhead device body 100 and the outer side of the connecting body 300, and a metal backing ring 320 is arranged on the contact surface of the second annular connecting groove 301.
The cross-section of the groove 310 is a slope of 25 °.
With the important point of combining fig. 5 and 6, the ring of the open ring 210 is evenly divided into 13 blocks, 12 blocks of the 13 blocks are processed into the open ring, the inclined plane of the cross section of the open ring 210 is designed to be 25 degrees, and the inclined plane is matched with the section of the groove 310, so that the torque required by screwing can be reduced.
To further increase the sealing performance of the overall installation result, an O-ring groove 120 is provided and an O-ring 121 is placed inside the wellhead body 100.
Installing the O-ring groove 120 in the wellhead body 100, and installing the metal backing ring 320 in the second ring connection groove 301;
the wellhead body 100 and the connector 300 are preassembled, and the inclined surface of the open ring 210 is driven to be gradually embedded into the inclined surface of the groove 310 on the attached connector 300 by rotating the transmission screw 220, so that the wellhead body 100 and the connector 300 can be connected.
With particular reference to fig. 2, the drive screw 220 is rotated to seal the metal backing ring 320, and the connection body 300 is installed with the wellhead body 100 to complete the connection.
With particular reference to fig. 3, the reverse rotation of the drive screw 220 drives the inclined surface of the open ring 210 to gradually move away from the inclined surface of the groove 310 of the connection body 300 until the open ring 210 is completely installed in the open ring installation groove 130, and the connection body 300 is separated from the wellhead body 100 to complete the disassembly.
When the metal backing ring 320 leaks, the driving screw 220 at and near the leakage point can be uniformly screwed to drive the corresponding open ring 210 to be continuously embedded into the inclined plane of the groove 310 on the attaching connector 300, so that the metal backing ring 320 is sealed again.
The V-shaped packing 111 mainly plays a second sealing role behind the metal backing ring 320, and a belleville spring 112 is arranged below the V-shaped packing 111.
When the V-shaped packing 111 is worn, the belleville spring 112 can be compensated preferentially to ensure the sealing performance of the V-shaped packing, and when the V-shaped packing 111 is replaced, the V-shaped packing 111 can be replaced only by unscrewing the pressing cap 230, so that the maintenance is convenient, and the labor cost is saved.
With particular reference to fig. 2 and 3, the distance f1 from the open ring 210 to the groove 310 of the connector 300 is slightly less than the distance f2 of the protruding nut 230 when the drive screw 220 is in the disassembled position, and the overall length f3 of the drive screw 220 connected to the open ring 210 by the groove 221 is greater than the wall thickness f4 of the wellhead body 100 to ensure installability.
With particular reference to fig. 4, the outer diameter d2 of the driving screw 220 should be greater than the sealing surface d1 to form an inverted structure, so as to prevent the driving screw 220 from being blown out when the internal pressure of the wellhead body 100 is abnormally increased, thereby ensuring the safety during operation, and the size M1 of the connecting thread 222 should be slightly smaller than the sealing surface d1 to ensure the installability.
Connecting and dismantling the wellhead device body 100 and the connector 300 in a laboratory can be completed within 10 minutes, so that the installation time is reduced by 90%, the operation is easy, a worker does not need to use a hammer and a hammering wrench in the installation process, and the safety during installation is improved.
Claims (9)
1. A quick connect and disconnect structure for a wellhead, comprising:
the wellhead device comprises a wellhead device body, wherein a plurality of counter bores and open-loop mounting grooves are arranged on the wellhead device body in a penetrating manner;
a transmission mounting mechanism is arranged in the counter bore and comprises an open ring, a transmission screw rod and a pressing cap which are connected from inside to outside;
the wellhead device comprises a wellhead device body, wherein a connecting body is arranged inside the wellhead device body, a groove is formed in the periphery of the connecting body, and the driving screw drives the open ring to be embedded into or loosened from the groove in a screwing or unscrewing mode so as to achieve the effects of quick connection and disassembly.
2. The quick connect and disconnect structure for a wellhead of claim 1, wherein said counter bores are provided in three sections comprising a first threaded section, a stuffing box section and a second threaded section.
3. The quick connect and disconnect structure for a wellhead according to claim 1, wherein the squeeze cap has internal and external thread sections on its respective internal and external circles, the external thread section cooperating with the internal structure of the counterbore to mount the squeeze cap in the counterbore;
the internal thread section is connected with the transmission screw;
and a boss is arranged at the bottom of the pressing cap.
4. A quick connect and disconnect structure for a wellhead as claimed in claim 2 wherein the stuffing box section has stuffing disposed therein and Below the stuffing is a belleville spring.
5. The quick-connect and disconnect structure for a wellhead assembly of claim 1, wherein both ends of said drive screw are asymmetrically disposed, and a large head end of said drive screw is provided with a groove through which said drive screw is connected to said open ring;
the small end of the transmission screw rod is provided with a connecting thread which is connected with the pressing cap.
6. A quick connect and disconnect structure for a wellhead as claimed in claim 1 wherein mating first and second ring connection slots are provided between the inside of the wellhead body and the outside of the connection body, a metal backing ring being provided on the contact surface of the second ring connection slot.
7. The quick connect and disconnect structure for a wellhead according to claim 1 wherein an O-ring groove is provided and an O-ring is placed inside the wellhead body.
8. A quick connect and disconnect structure for a wellhead as claimed in claim 1 wherein the cross-section of said recess is a 25 ° chamfer.
9. A quick connect and disconnect structure for a wellhead as claimed in claim 1 wherein the drive screw is of an inverted construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122224350.4U CN216077042U (en) | 2021-09-13 | 2021-09-13 | Quick connection and disassembly structure for wellhead device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122224350.4U CN216077042U (en) | 2021-09-13 | 2021-09-13 | Quick connection and disassembly structure for wellhead device |
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| Publication Number | Publication Date |
|---|---|
| CN216077042U true CN216077042U (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122224350.4U Active CN216077042U (en) | 2021-09-13 | 2021-09-13 | Quick connection and disassembly structure for wellhead device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653458A (en) * | 2021-09-13 | 2021-11-16 | 上海神开石油设备有限公司 | Quick connection and disassembly structure for wellhead device |
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2021
- 2021-09-13 CN CN202122224350.4U patent/CN216077042U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653458A (en) * | 2021-09-13 | 2021-11-16 | 上海神开石油设备有限公司 | Quick connection and disassembly structure for wellhead device |
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