CN117780289A - High sulfur-resistant combined type metal seal tubing head - Google Patents
High sulfur-resistant combined type metal seal tubing head Download PDFInfo
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- CN117780289A CN117780289A CN202410212302.9A CN202410212302A CN117780289A CN 117780289 A CN117780289 A CN 117780289A CN 202410212302 A CN202410212302 A CN 202410212302A CN 117780289 A CN117780289 A CN 117780289A
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- tubing head
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- 239000002184 metal Substances 0.000 title claims abstract description 58
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 20
- 239000011593 sulfur Substances 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 139
- 229920001971 elastomer Polymers 0.000 claims abstract description 56
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims description 18
- 239000012530 fluid Substances 0.000 claims description 11
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 15
- 230000009471 action Effects 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 4
- 230000032683 aging Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The invention relates to the technical field of tubing heads, in particular to a high sulfur-resistant composite metal seal tubing head which comprises a tubing head main body, wherein a detachable metal seal hanger is arranged in the tubing head main body, an upper connecting disc and a lower connecting disc are respectively arranged at the top end of the metal seal hanger and the top end of the tubing head main body, threads are arranged on the outer surface of a body of the metal seal hanger, and a thread groove matched with the threads is formed in the inner wall of the tubing head main body. According to the invention, the first sealing mechanism is arranged, so that the annular rubber sealing tube can be driven to move upwards during installation and is inserted into the annular sealing groove on the upper connecting disc, the effective sealing of the gap between the oil pipe head main body and the metal sealing hanger is realized under the action of the first rubber sealing ring, the structural strength of the annular rubber sealing tube can be effectively improved, the annular rubber sealing tube is not easy to deform due to the change of internal air pressure, and the aging rate of the annular rubber sealing tube is reduced.
Description
Technical Field
The invention relates to the technical field of tubing heads, in particular to a high sulfur-resistant composite metal seal tubing head.
Background
Tubing heads are the components of the apparatus that connect the uppermost casing head to the production tree to suspend the tubing and seal the annular space between the tubing and casing. The tubing head is positioned above the casing head and comprises a casing four-way joint and a tubing hanger. The device is used for suspending an oil pipe which is put into a well, a downhole tool and sealing an annular space of an oil sleeve. The high sulfur-resistant composite metal sealing tubing head is made of composite metal materials, so that the tubing head has high-efficiency sulfur resistance.
In the prior art, chinese patent bulletin number: CN208073411U discloses a metal seal tubing head device, which relates to the technical field of wellhead devices. The metal seal tubing head device is a metal seal tubing head device. The metal sealing oil pipe head device comprises an oil pipe head body, wherein a first flange plate is fixedly connected to the top of the oil pipe head body, a second flange plate is fixedly connected to the bottom of the oil pipe head body, two bearings are fixedly embedded on two side faces of the first flange plate, two transverse grooves are formed in one opposite side of each bearing and located in two sides of the first flange plate, and two sliding blocks are inserted at opposite ends of the two transverse grooves. The metal sealing oil pipe head device can directly control the clamping block to be in full contact with the oil pipe hanger through the twisting screw, so that the effect of fixing the oil pipe hanger is achieved, the oil pipe hanger can be better fixed through the combined action of the first buffer spring, the second buffer spring and the anti-skid pad, and meanwhile, the safety of the oil pipe hanger is also improved.
According to the technical scheme provided by the prior art, although the effective positioning of the oil pipe hanger can be realized, when the oil pipe hanger is actually connected with the oil pipe head body, the adopted sealing mode is only a single rubber sealing ring for sealing, so that the sealing performance of the oil pipe hanger after being connected with the oil pipe head body is poor, and particularly when the acid gas or H2S gas of a mining medium is high, the rubber sealing member can be aged and damaged in an accelerated manner, so that the leakage condition is easy to occur, and the service life of the oil pipe head is influenced.
In view of the above, the present invention proposes a high sulfur resistant composite metal seal tubing head to solve the above-mentioned problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a high-sulfur-resistance composite metal sealing oil pipe head which has the advantages of excellent sealing performance and the like and solves the problem of poor sealing performance.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a high sulfur-resistant combined type metal seal tubing head, includes tubing head main part, tubing head main part's inside is provided with detachable metal seal hanger, metal seal hanger's top and tubing head main part's top are provided with upper connection pad and lower connection pad respectively, metal seal hanger's body external surface is provided with the screw thread, tubing head main part's inner wall has seted up the screw thread groove with screw thread looks adaptation;
the sealing device comprises an upper connecting disc, a lower connecting disc, a first sealing mechanism, a second annular groove, a sealing ring and an annular piezoelectric ceramic, wherein the opposite surfaces of the upper connecting disc and the lower connecting disc are provided with the first sealing mechanism, the first sealing mechanism comprises a rotating ring which is arranged on the lower surface of the upper connecting disc in a rotating mode, a first annular groove which is arranged on the upper surface of the lower connecting disc and is matched with the rotating ring, an annular inflatable air bag is fixedly arranged on the inner wall of the first annular groove, the second annular groove is arranged on the upper surface of the lower connecting disc, the sealing ring is arranged on the inner wall of the second annular groove in a sliding mode, an annular rubber sealing tube is fixedly arranged on the upper surface of the sealing ring, an annular solution cavity is formed in the top end of the annular rubber sealing tube in an inner portion, electrorheological fluid is filled in the annular solution cavity, and the annular piezoelectric ceramic is fixedly arranged on the top end of the annular rubber sealing tube.
As the preferable technical scheme, the lower surface of the upper connecting disc is provided with an annular sealing groove matched with the annular rubber sealing tube, the annular piezoelectric ceramic is fixedly inserted into the inner wall of the annular sealing groove, and the anode and the cathode of the annular piezoelectric ceramic extend into electrorheological fluid in the annular volume cavity through wires.
As the preferable technical scheme, the lower surface of the upper connecting disc is fixedly provided with a first rubber sealing ring for preliminarily sealing a gap between the upper connecting disc and the lower connecting disc, and the inner diameter of the first rubber sealing ring is the same as the inner diameter of the top end of the oil pipe head main body.
As the preferable technical scheme, the inner wall of the annular inflatable airbag is embedded with a plurality of inflatable tubes extending to the inside of the annular sealing cavity in a circumferential array, and the inner wall of the first annular groove is provided with a plurality of sealing holes communicated with the inner wall of the second annular groove, and a plurality of inflatable tubes are respectively fixedly arranged on the inner walls of the plurality of sealing holes.
As the preferable technical scheme, the inner bottom wall of the annular sealing cavity is fixedly provided with a plurality of return springs in a circumferential array, and one ends of the return springs, which are far away from the inner bottom wall of the annular sealing cavity, are fixedly connected with the lower surface of the sealing ring.
As the preferable technical scheme, the outer ring surfaces of the upper connecting disc and the lower connecting disc are fixedly provided with connecting rings, the upper surfaces of the two connecting rings are provided with a plurality of locking bolts in a circumferential array, and the surfaces of the locking bolts are in threaded connection with locking nuts.
As the preferable technical scheme, the opposite surfaces of the upper connecting disc and the lower connecting disc are provided with a second sealing mechanism, the second sealing mechanism comprises an installation tube fixedly arranged on the lower surface of the upper connecting disc and an annular installation groove which is arranged on the upper surface of the lower connecting disc and corresponds to the installation tube, the inner wall of the annular installation groove is provided with an annular connection cavity, the inner part of the lower connecting disc is provided with a sliding cavity, and the inner wall of the sliding cavity is provided with a sliding ring in a sliding manner.
As the preferable technical scheme, the top end of the sliding ring is fixedly provided with a second rubber sealing ring, and the inner top wall of the sliding cavity is provided with an annular hole extending to the upper surface of the lower connecting disc for the sliding of the second rubber sealing ring.
As the preferable technical scheme, the inner bottom wall of the annular connecting cavity is provided with four threaded columns in a circumferential array rotation mode, the top ends of the four threaded columns extend to the inside of the sliding cavity, and cylindrical thread grooves in threaded connection with the outer surfaces of the four threaded columns are respectively formed in the lower surface of the sliding ring.
As the preferable technical scheme, the surface of the threaded column in the annular connecting cavity is fixedly provided with fluted discs, the outer surface of the mounting pipe is fixedly provided with annular toothed rings, and the four fluted discs are mutually meshed with the annular toothed rings.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the first sealing mechanism is arranged, so that the annular rubber sealing tube can be driven to move upwards when the metal sealing hanger and the oil tube head main body are installed, and is inserted into the annular sealing groove on the upper connecting disc, and under the action of the first rubber sealing ring, the effective sealing of a gap between the oil tube head main body and the metal sealing hanger is realized, and after the pressure in the oil tube head main body is changed, and the first rubber sealing ring fails, the structural strength of the annular rubber sealing tube can be effectively improved, so that the annular rubber sealing tube is not easy to deform due to the change of the internal pressure, and the aging rate of the annular rubber sealing tube is reduced.
2. According to the invention, the second sealing mechanism is arranged, after the metal sealing hanger enters the oil pipe head main body, the upper connecting disc is continuously rotated, the second rubber sealing ring is driven to automatically move upwards and is tightly squeezed with the lower surface of the upper connecting disc, so that the tightness of the metal sealing hanger after being connected with the oil pipe head main body is further improved, and the service life of the oil pipe head is effectively prolonged.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present invention;
FIG. 4 is an enlarged schematic view of the structure of FIG. 2B according to the present invention;
FIG. 5 is a schematic perspective view of a seal ring according to the present invention;
FIG. 6 is an enlarged schematic view of the structure of FIG. 2 at C in accordance with the present invention;
FIG. 7 is a perspective view of a slip ring according to the present invention;
fig. 8 is an enlarged view of the structure of fig. 7 at D according to the present invention.
In the figure: 1. a tubing head body; 2. a metal seal hanger; 3. an upper connecting disc; 4. a lower connecting disc; 5. a thread; 6. a thread groove;
7. a first sealing mechanism; 701. a rotating ring; 702. an annular inflatable balloon; 703. a seal ring; 704. an annular seal cavity; 705. an annular rubber seal tube; 706. an annular solution chamber; 707. annular piezoelectric ceramics; 708. an inflation tube; 709. a return spring;
7010. an annular seal groove; 8. a first rubber seal ring; 9. a lock nut; 10. a connecting ring; 11. a locking bolt;
12. a second sealing mechanism; 1201. installing a pipe; 1202. a slip ring; 1203. a second rubber seal ring; 1204. a threaded column; 1205. a cylindrical thread groove; 1206. fluted disc; 1207. an annular toothed ring.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Example 1: according to the embodiment of the invention, as shown in the accompanying drawings 1-5, the high sulfur-resistant composite metal seal tubing head is provided, the high sulfur-resistant composite metal seal tubing head comprises a tubing head body 1, a detachable metal seal hanger 2 is arranged in the tubing head body 1 and is used for hanging a tubing string and providing sealing between the hung tubing and a tubing head conical seat, an upper connecting disc 3 and a lower connecting disc 4 are respectively arranged at the top end of the metal seal hanger 2 and the top end of the tubing head body 1, the upper connecting disc 3 and the lower connecting disc 4 are arranged so as to facilitate the installation operation of the metal seal hanger 2, a first rubber seal ring 8 for preliminarily sealing a gap between the upper connecting disc 3 and the lower connecting disc 4 is fixedly arranged on the lower surface of the upper connecting disc 3, and the inner diameter of the first rubber seal ring 8 is the same as the inner diameter of the top end of the tubing head body 1, wherein the first rubber seal ring 8 can pre-seal a gap between the metal seal hanger 2 and the tubing head body 1, namely, a first seal.
The outer annular surfaces of the upper connecting disc 3 and the lower connecting disc 4 are fixedly provided with connecting rings 10, the upper surfaces of the two connecting rings 10 are provided with a plurality of locking bolts 11 in a circumferential array, the surfaces of the locking bolts 11 are connected with locking nuts 9 in a threaded manner, and the connecting rings 10, the locking bolts 11 and the locking nuts 9 are convenient to effectively fix the upper connecting disc 3 and the lower connecting disc 4, so that sealing performance is guaranteed.
The outer surface of the body of the metal seal hanger 2 is provided with threads 5, the inner wall of the tubing head main body 1 is provided with thread grooves 6 matched with the threads 5, wherein the threads 5 on the metal seal hanger 2 are only the top end of the outer column body of the metal seal hanger 2, and the purpose is that the metal seal hanger 2 can smoothly and effectively enter the interior of the tubing head main body 1;
the opposite surfaces of the upper connecting disc 3 and the lower connecting disc 4 are provided with a first sealing mechanism 7, the first sealing mechanism 7 comprises a rotating ring 701 which is rotatably arranged on the lower surface of the upper connecting disc 3, and a first annular groove which is formed on the upper surface of the lower connecting disc 4 and is matched with the rotating ring 701, the first annular groove is arranged so that the rotating ring 701 can smoothly enter the lower connecting disc 4, an annular inflatable airbag 702 (the initial state of the annular inflatable airbag 702 is a full inflation saturated state) is fixedly arranged on the inner wall of the first annular groove, the first sealing mechanism 7 also comprises a second annular groove formed on the upper surface of the lower connecting disc 4, a sealing ring 703 is slidably arranged on the inner wall of the second annular groove, an annular sealing cavity 704 is formed between the lower surface of the sealing ring 703 and the inner bottom wall of the second annular groove, a plurality of inflation tubes 708 which extend into the annular sealing cavity are embedded in a circumferential array, the annular sealing cavity 704 and the annular inflatable airbag 702 are communicated through the inflation tubes 708, namely, when the metal hanger 2 is not installed, the bottom of the sealing ring 703 is in contact with the inner bottom wall of the annular sealing cavity 704, and the annular inflatable airbag 702 is in the saturated state at the moment.
And the inner wall of the first annular groove is provided with a plurality of sealing holes communicated with the inner wall of the second annular groove, and a plurality of inflation tubes 708 are respectively fixedly arranged on the inner walls of the plurality of sealing holes.
The inner bottom wall of the annular sealing cavity 704 is fixedly provided with a plurality of return springs 709 in a circumferential array, and one ends of the plurality of return springs 709, which are far away from the inner bottom wall of the annular sealing cavity 704, are fixedly connected with the lower surface of the sealing ring 703. The reset spring 709 is arranged, when the metal seal hanger 2 is not installed, the bottom end of the seal ring 703 can be contacted with the inner bottom wall of the annular seal cavity 704, so that all the gas in the annular seal cavity 704 enters the inside of the annular inflatable airbag 702, and the top of the annular inflatable airbag 702 is inflated to the upper surface of the lower connecting disc 4.
The upper surface of sealing ring 703 has set firmly annular rubber seal tube 705, and annular rubber seal tube 705's top is inside to be seted up annular solution chamber 706, and the inside of annular solution chamber 706 has been poured into electrorheological fluid, and annular rubber seal tube 705's top has set firmly annular piezoceramics 707, and wherein, annular piezoceramics 707 set up, can be at annular piezoceramics 707 by the extrusion deformation in-process, to electrorheological fluid's inside transport electric current.
The lower surface of the upper connecting disc 3 is provided with an annular sealing groove 7010 matched with the annular rubber sealing tube 705, the annular piezoelectric ceramic 707 is fixedly inserted into the inner wall of the annular sealing groove 7010, the annular piezoelectric ceramic 707 is rotationally connected with the inner wall of the annular sealing groove 7010, after the annular piezoelectric ceramic 707 is extruded and deformed, the annular piezoelectric ceramic 707 can generate current, and the anode and the cathode of the annular piezoelectric ceramic 707 extend into electrorheological fluid in the annular volume cavity through wires.
In this embodiment, by providing the first sealing mechanism 7, when the metal seal hanger 2 and the tubing head main body 1 are installed, the metal seal hanger 2 can be inserted into the tubing head main body 1, after the rotating ring 701 enters the first annular groove, the upper connecting disc 3 is rotated to drive the metal seal hanger 2 to rotate, the metal seal hanger 2 is moved downwards under the action of the screw thread 5 and the screw thread groove 6, the rotating ring 701 is driven to move downwards, the annular inflatable air bag 702 is extruded in the process of moving downwards the rotating ring 701, the gas in the annular inflatable air bag 702 is pressed into the annular inflatable air bag 704 through the air tube 708 (before installation, the gas in the annular inflatable air bag 702 is compressed into the annular inflatable air bag 702 under the action of the return spring 709, the annular inflatable air bag 702 is in an inflated full state, during installation, the gas in the annular inflatable airbag 702 is extruded by the rotating ring 701), so that the pressure in the annular sealing cavity 704 is increased, the sealing ring 703 is driven to move upwards, the annular rubber sealing tube 705 is driven to move upwards and is inserted into the annular sealing groove 7010 on the upper connecting disc 3, and effective sealing of a gap between the tubing head main body 1 and the metal sealing hanger 2 is realized under the action of the first rubber sealing ring 8, when the upper connecting disc 3 is continuously rotated, the annular piezoelectric ceramic 707 at the top of the annular rubber sealing tube 705 and the inner wall of the annular sealing groove 7010 are extruded to deform the annular piezoelectric ceramic 707 to generate current, the current is transmitted into electrorheological fluid in the annular solution cavity 706 through a wire to change the electrorheological fluid from a liquid state to a solid state, after the installation is completed, the annular piezoelectric ceramic 707 does not generate current, the electrorheological fluid is changed back to the liquid state, when different air pressures are generated in the oil pipe head and the first rubber sealing ring 8 is damaged in the process of using the metal sealing hanger 2 and the oil pipe head main body 1 after the installation is completed, the air pressures can generate pressure on the annular rubber sealing tube 705, so that the annular rubber sealing tube 705 has outward pressure, the pressure between the annular piezoelectric ceramics 707 at the top end of the annular rubber sealing tube 705 and the annular sealing groove 7010 is changed, the annular piezoelectric ceramics 707 are subjected to irregular extrusion force, the annular piezoelectric ceramics 707 generate electric current, and the electric current changes the electrorheological fluid from a liquid state to a solid state again, so that the structural strength of the annular rubber sealing tube 705 is effectively improved; that is, according to the technical scheme, the internal pressure of the tubing head main body 1 can be changed, and after the first rubber sealing ring 8 fails, the structural strength of the annular rubber sealing tube 705 can be effectively improved, so that the annular rubber sealing tube 705 is not easy to deform due to the change of the internal pressure, and the aging rate of the annular rubber sealing tube is reduced.
Example 2: on the basis of embodiment 1, please refer to fig. 6-8, and unlike embodiment 1, the opposite surfaces of the upper connecting disc 3 and the lower connecting disc 4 are provided with a second sealing mechanism 12, the second sealing mechanism 12 comprises a mounting tube 1201 fixedly arranged on the lower surface of the upper connecting disc 3, and an annular mounting groove which is arranged on the upper surface of the lower connecting disc 4 and corresponds to the mounting tube 1201, the wall thickness of the mounting tube 1201 is smaller than that of the annular mounting groove, the inner wall of the annular mounting groove is provided with an annular connecting cavity, the inner wall of the lower connecting disc 4 is provided with a sliding cavity, and the inner wall of the sliding cavity is provided with a sliding ring 1202 in a sliding manner.
The second rubber sealing ring 1203 is fixedly arranged at the top end of the sliding ring 1202, an annular hole which extends to the upper surface of the lower connecting disc 4 and is used for allowing the second rubber sealing ring 1203 to slide is formed in the inner top wall of the sliding cavity, and the arrangement of the annular hole is convenient for the second rubber sealing ring 1203 to smoothly enter the middle of the upper connecting disc 3 and the lower connecting disc 4 for sealing.
The inner bottom wall of the annular connecting cavity is provided with four thread columns 1204 in a rotating mode in a circumferential array mode, the top ends of the four thread columns 1204 extend to the inside of the sliding cavity, cylindrical thread grooves 1205 in threaded connection with the outer surfaces of the four thread columns 1204 are formed in the lower surface of the sliding ring 1202 respectively, and the cylindrical thread grooves 1205 enable the rotation of the thread columns 1204 to smoothly drive the sliding ring 1202 to move.
The surface of the threaded post 1204 inside the annular connecting cavity is fixedly provided with a fluted disc 1206, the outer surface of the mounting tube 1201 is fixedly provided with an annular toothed ring 1207, the four fluted discs 1206 are meshed with the annular toothed ring 1207, the sum of the wall thickness of the mounting tube 1201 and the thickness of the annular toothed ring 1207 is slightly smaller than that of the annular mounting groove, namely, the mounting tube 1201 and the annular toothed ring 1207 can smoothly slide up and down on the inner wall of the annular mounting groove, and the tooth shapes of the fluted disc 1206 and the annular toothed ring 1207 are triangle teeth (as shown in fig. 8), so that the annular toothed ring 1207 can be meshed with the teeth on the fluted disc 1206 conveniently when the annular toothed ring 1207 moves downwards (even if the annular toothed ring is not meshed once, repeated operation can be performed for several times, and the mounting tube 1201 can be meshed up and down).
In this embodiment, after the upper connection disc 3 is rotated to enable the metal seal hanger 2 to enter the oil pipe head main body 1, the installation tube 1201 can move downwards at this time, so that the annular toothed ring 1207 on the surface of the installation tube is correspondingly meshed with the fluted disc 1206, and after the threads 5 are separated from the thread grooves 6, the upper connection disc 3 is continuously rotated to drive the installation tube 1201 to rotate in the annular installation groove, the rotation of the installation tube 1201 drives the four fluted discs 1206 to rotate simultaneously under the action of the annular toothed ring 1207, the rotation of the fluted disc 1206 drives the threaded column 1204 to rotate, the rotation of the threaded column 1204 drives the sliding ring 1202 to automatically move upwards under the action of the cylindrical threaded groove 1205, thereby driving the second rubber seal ring 1203 to automatically move upwards and squeeze tightly with the lower surface of the upper connection disc 3, and finally, the upper connection disc 3 and the lower connection disc 4 are effectively locked and fixed through the locking bolts 11 and the locking nuts 9, so that the tightness of the metal seal hanger 2 after being connected with the oil pipe head main body 1 is effectively improved.
In the description of the present specification, the descriptions of the terms "example," "an embodiment," "certain embodiments," "an exemplary embodiment," "an example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The basic principles, main features and advantages of the present invention have been described above in connection with specific embodiments. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a high sulfur-resistant combined type metal seal tubing head, includes tubing head main part (1), its characterized in that: the oil pipe head comprises an oil pipe head body (1), wherein a detachable metal sealing hanger (2) is arranged in the oil pipe head body (1), an upper connecting disc (3) and a lower connecting disc (4) are respectively arranged at the top end of the metal sealing hanger (2) and the top end of the oil pipe head body (1), threads (5) are arranged on the outer surface of the body of the metal sealing hanger (2), and a thread groove (6) matched with the threads (5) is formed in the inner wall of the oil pipe head body (1);
the utility model discloses a high-voltage power supply device, including upper connection pad (3) and lower connection pad (4), the relative face of upper connection pad (3) and lower connection pad (4) is provided with first sealing mechanism (7), first sealing mechanism (7) is including rotating rotation ring (701) that sets up upper connection pad (3) lower surface to and set up at the first ring channel of lower connection pad (4) upper surface and with rotation ring (701) looks adaptation, annular inflatable balloon (702) have been set firmly to the inner wall of first ring channel, first sealing mechanism (7) still including set up at the second ring channel of lower connection pad (4) upper surface, and slide sealing ring (703) of setting up at second ring channel inner wall, form annular seal chamber (704) between the interior bottom wall of lower surface of sealing ring (703) and second ring channel, annular rubber seal tube (705) have been set firmly to the upper surface of sealing ring (703), just annular rubber seal tube (705) top inside has set up annular solution chamber (706), the inside electrorheological fluid that fills of annular rubber seal tube (705), annular piezoceramics (707) have been set firmly on the top.
2. The high sulfur resistant composite metal seal tubing head of claim 1, wherein: an annular sealing groove (7010) matched with the annular rubber sealing tube (705) is formed in the lower surface of the upper connecting disc (3), the annular piezoelectric ceramic (707) is fixedly inserted into the inner wall of the annular sealing groove (7010), and the positive electrode and the negative electrode of the annular piezoelectric ceramic (707) extend into electrorheological fluid in the annular volume cavity through wires.
3. The high sulfur resistant composite metal seal tubing head of claim 1, wherein: the lower surface of the upper connecting disc (3) is fixedly provided with a first rubber sealing ring (8) for preliminarily sealing a gap between the upper connecting disc (3) and the lower connecting disc (4), and the inner diameter of the first rubber sealing ring (8) is the same as the inner diameter of the top end of the oil pipe head main body (1).
4. The high sulfur resistant composite metal seal tubing head of claim 1, wherein: the inner wall of the annular inflatable air bag (702) is embedded with a plurality of inflatable tubes (708) extending to the inside of the annular sealing cavity (704) in a circumferential array, a plurality of sealing holes penetrating through the inner wall of the second annular groove are formed in the inner wall of the first annular groove, and a plurality of inflatable tubes (708) are respectively fixedly arranged on the inner walls of the plurality of sealing holes.
5. The high sulfur resistant composite metal seal tubing head of claim 1, wherein: the inner bottom wall of the annular sealing cavity (704) is fixedly provided with a plurality of return springs (709) in a circumferential array, and one ends of the return springs (709) away from the inner bottom wall of the annular sealing cavity (704) are fixedly connected with the lower surface of the sealing ring (703).
6. The high sulfur resistant composite metal seal tubing head of claim 1, wherein: the outer ring surfaces of the upper connecting disc (3) and the lower connecting disc (4) are fixedly provided with connecting rings (10), the upper surfaces of the two connecting rings (10) are provided with a plurality of locking bolts (11) in a circumferential array, and the surfaces of the locking bolts (11) are in threaded connection with locking nuts (9).
7. The high sulfur resistant composite metal seal tubing head of any of claims 1-6, wherein: the utility model discloses a sliding device for the electric motor is characterized in that a second sealing mechanism (12) is arranged on the opposite surfaces of an upper connecting disc (3) and a lower connecting disc (4), the second sealing mechanism (12) comprises a mounting pipe (1201) fixedly arranged on the lower surface of the upper connecting disc (3) and a ring-shaped mounting groove which is arranged on the upper surface of the lower connecting disc (4) and corresponds to the mounting pipe (1201), a ring-shaped connecting cavity is arranged on the inner wall of the ring-shaped mounting groove, a sliding cavity is arranged in the lower connecting disc (4), and a sliding ring (1202) is arranged on the inner wall of the sliding cavity in a sliding mode.
8. The high sulfur resistant composite metal seal tubing head of claim 7, wherein: the top end of the sliding ring (1202) is fixedly provided with a second rubber sealing ring (1203), and the inner top wall of the sliding cavity is provided with an annular hole which extends to the upper surface of the lower connecting disc (4) and is used for the second rubber sealing ring (1203) to slide.
9. The high sulfur resistant composite metal seal tubing head of claim 8, wherein: the inner bottom wall of the annular connecting cavity is provided with four threaded columns (1204) in a circumferential array rotating mode, the top ends of the four threaded columns (1204) extend to the inside of the sliding cavity, and cylindrical thread grooves (1205) in threaded connection with the outer surfaces of the four threaded columns (1204) are respectively formed in the lower surface of the sliding ring (1202).
10. The high sulfur resistant composite metal seal tubing head of claim 9, wherein: the surface of the threaded column (1204) positioned in the annular connecting cavity is fixedly provided with fluted discs (1206), the outer surface of the mounting pipe (1201) is fixedly provided with annular toothed rings (1207), and four fluted discs (1206) are meshed with the annular toothed rings (1207) mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410212302.9A CN117780289B (en) | 2024-02-27 | 2024-02-27 | High sulfur-resistant combined type metal seal tubing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410212302.9A CN117780289B (en) | 2024-02-27 | 2024-02-27 | High sulfur-resistant combined type metal seal tubing head |
Publications (2)
| Publication Number | Publication Date |
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| CN117780289A true CN117780289A (en) | 2024-03-29 |
| CN117780289B CN117780289B (en) | 2024-05-03 |
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| CN202410212302.9A Active CN117780289B (en) | 2024-02-27 | 2024-02-27 | High sulfur-resistant combined type metal seal tubing head |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145829A (en) * | 2020-09-17 | 2020-12-29 | 席赫 | Double-end oil pipe nipple for oil field |
| CN215370981U (en) * | 2021-07-13 | 2021-12-31 | 镇江联创机械配件有限公司 | Rubber sealing element for piston |
| CN114709658A (en) * | 2022-04-28 | 2022-07-05 | 靖江市金舟船舶器材有限公司 | Fire-resistant power cable's joint connecting device |
| CN115110913A (en) * | 2022-07-29 | 2022-09-27 | 霍丽丽 | Blowout preventer for preventing blowout in submarine oil exploitation |
| CN116044338A (en) * | 2022-11-11 | 2023-05-02 | 盐城神华机械制造有限公司 | Protective device and blowout preventer |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145829A (en) * | 2020-09-17 | 2020-12-29 | 席赫 | Double-end oil pipe nipple for oil field |
| CN215370981U (en) * | 2021-07-13 | 2021-12-31 | 镇江联创机械配件有限公司 | Rubber sealing element for piston |
| CN114709658A (en) * | 2022-04-28 | 2022-07-05 | 靖江市金舟船舶器材有限公司 | Fire-resistant power cable's joint connecting device |
| CN115110913A (en) * | 2022-07-29 | 2022-09-27 | 霍丽丽 | Blowout preventer for preventing blowout in submarine oil exploitation |
| CN116044338A (en) * | 2022-11-11 | 2023-05-02 | 盐城神华机械制造有限公司 | Protective device and blowout preventer |
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| CN117780289B (en) | 2024-05-03 |
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