CN215889960U

CN215889960U - Optical fiber high-pressure sealing control head

Info

Publication number: CN215889960U
Application number: CN202121735319.0U
Authority: CN
Inventors: 刘新科; 王少君; 艾尔肯
Original assignee: Xinjiang Zhundong Petroleum Technology Co ltd
Current assignee: Xinjiang Zhundong Petroleum Technology Co ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-02-22
Anticipated expiration: 2031-07-28

Abstract

The utility model relates to the technical field of sealing devices, in particular to an optical fiber high-pressure sealing control head; it comprises a sealing seat connector; a right mounting groove is formed in the right end face of the sealing seat connector, a right packing pad and a self-sealing packing are sequentially mounted in the right mounting groove from left to right, a packing support sleeve is fixedly mounted at the right end of the right mounting groove, and the left end face of the packing support sleeve is tightly pressed on the right end face of the self-sealing packing; be provided with left mounting groove on the left end face of seal receptacle connector, from the right side to left side installs left packing pad, column packing and packing in proper order in left mounting groove and presses the cap. The optical fiber end sealing device has the advantages of reasonable and compact structure and convenience in use, realizes the purpose of reliably sealing the optical fiber end in a wellhead and underground high-temperature and high-pressure environment by matching the sealing seat connector, the packing support sleeve, the self-sealing packing and the sealing cover, has the characteristics of safety, reliability, good sealing effect and convenience in mounting and dismounting, facilitates operation, improves working efficiency and greatly reduces production cost.

Description

Optical fiber high-pressure sealing control head

Technical Field

The utility model relates to the technical field of sealing devices, in particular to an optical fiber high-pressure sealing control head.

Background

The optical fiber can be used as a transmission medium and a sensing element, has good temperature and pressure resistance, and can be used for high-temperature and high-pressure real-time testing of a vertical well, a highly-deviated well and a horizontal well. Under the condition of not influencing the original temperature field and pressure field distribution and the normal production of the oil field, the real-time multipoint temperature, pressure or continuous temperature distribution rapid measurement can be realized. In the high-temperature and high-pressure environment in the pit, the optical fiber is required to have good sealing performance so as to be effectively protected from being damaged.

Compared with the traditional electronic oil reservoir dynamic testing technology, the optical fiber communication technology applied in the current petroleum testing instrument has the problem of optical fiber sealing, and the current common method comprises the following steps: metal welding sealing, glue sealing, ceramic welding sealing, glass welding sealing and the like, but the above methods have the problems of low reliability, complex process, high cost and the like.

Disclosure of Invention

The utility model provides an optical fiber high-pressure sealing control head, overcomes the defects of the prior art, and can effectively solve the problems of low reliability, complex process, high cost and the like of the prior art.

The technical scheme of the utility model is realized by the following measures: an optical fiber high-pressure sealing control head comprises a sealing seat connector, a packing support sleeve, a self-sealing packing, a columnar packing, a spring chuck seat, a spring chuck and a sealing cover; a right mounting groove is formed in the right end face of the sealing seat connector, a right packing pad and a self-sealing packing are sequentially mounted in the right mounting groove from left to right, a packing support sleeve is fixedly mounted at the right end of the right mounting groove, and the left end face of the packing support sleeve is tightly pressed on the right end face of the self-sealing packing; be provided with left mounting groove on the left end face of seal receptacle connector, from the right side to left side install left packing pad in proper order in left mounting groove, cap is pressed to column packing and packing, left end fixed mounting at left mounting groove has the collet chuck seat, the right-hand member face of collet chuck seat is pressed tightly on the left end face of cap is pressed to the packing, left fixed mounting at the collet chuck seat has collet chuck, fixed mounting has the gland nut that enables collet chuck to press from both sides tightly on collet chuck, the inboard left part outside fixed mounting of the right part of sealed lid and seal receptacle connector is in the same place, collet chuck and gland nut all are located sealed lid, be equipped with the intercommunicating pore that is linked together in the seal receptacle connector between left mounting groove and the right mounting groove, be equipped with the line hole on sealed lid.

The following are further optimization or/and improvement of the technical scheme of the utility model:

a sealing installation groove is arranged on the bottom end surface of the right installation groove, a gasket, a sealing ring and a check ring are sequentially arranged in the sealing installation groove from left to right, and a right packing gasket is tightly pressed on the check ring; the communicating hole is communicated with the sealing installation groove.

The sealing ring is an O-shaped sealing ring.

A boss is integrally fixed on the outer side of the middle part of the sealing seat connector, and the right end of the sealing cover is tightly pressed on the left end face of the boss; the right part of the sealing seat connector is provided with external threads.

A quadrilateral or hexagonal convex block is integrally fixed on the outer side of the right part of the packing supporting sleeve, and the convex block is positioned on the right side of the sealing seat connector.

The sealing cover and the sealing seat connector are fixedly installed together through threads, the compression nut is fixedly installed on the outer side of the left portion of the spring chuck through threads, the right portion of the spring chuck seat is fixedly installed on the left installation groove through threads, and the left portion of the packing support sleeve is fixedly installed on the right installation groove through threads.

The optical fiber end sealing device is reasonable and compact in structure and convenient to use, achieves the purpose of reliably sealing the optical fiber end in a wellhead and underground high-temperature and high-pressure environment through the matching use of the sealing seat connector, the packing support sleeve, the self-sealing packing, the columnar packing, the spring chuck and the sealing cover, has the characteristics of safety, reliability, good sealing effect and convenience in mounting and dismounting, facilitates operation, improves working efficiency and greatly reduces production cost.

Drawings

FIG. 1 is a schematic cross-sectional view of the armored fiber of the present invention.

The codes in the figures are respectively: 1 is the seal receptacle connector, 2 is the packing brace, 3 is from sealing packing, 4 is the column packing, 5 is the collet chuck seat, 6 is collet chuck, 7 is sealed lid, 8 is right mounting groove, 9 is right packing pad, 10 is left mounting groove, 11 is left packing pad, 12 is packing pressure cap, 13 is gland nut, 14 is the intercommunicating pore, 15 is the line hole, 16 is armor optic fibre, 17 is the seal mounting groove, 18 is the sealing washer, 19 is the boss, 20 is the lug.

Detailed Description

The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.

In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.

The utility model is further described with reference to the following examples and figures:

as shown in the attached figure 1, the optical fiber high-pressure sealing control head comprises a sealing seat connector 1, a packing support sleeve 2, a self-sealing packing 3, a columnar packing 4, a spring clamp seat 5, a spring clamp 6 and a sealing cover 7; a right mounting groove 8 is formed in the right end face of the seal seat connector 1, a right packing pad 9 and a self-sealing packing 3 are sequentially mounted in the right mounting groove 8 from left to right, a packing support sleeve 2 is fixedly mounted at the right end of the right mounting groove 8, and the left end face of the packing support sleeve 2 is tightly pressed on the right end face of the self-sealing packing 3; be provided with left mounting groove 10 on the left end face of seal receptacle connector 1, from the right side to left side install left packing pad 11 in proper order in left mounting groove 10, cap 12 is pressed to column packing 4 and packing, left end fixed mounting at left mounting groove 10 has collet chuck 5, the right-hand member face of collet chuck 5 is pressed tightly on the left end face of cap 12 is pressed to the packing, left part fixed mounting at collet chuck 5 has collet chuck 6, fixed mounting has the gland nut 13 that enables collet chuck 6 to press from both sides tightly on collet chuck 6, the right part inboard of sealed lid 7 and the left part outside fixed mounting of seal receptacle connector 1 are in the same place, collet chuck 6 and gland nut 13 all are located sealed lid 7, be equipped with the intercommunicating pore 14 that is linked together in the seal receptacle connector 1 between left mounting groove 10 and right mounting groove 8, be equipped with line hole 15 on sealed lid 7. The sealing seat connector 1, the packing support sleeve 2, the self-sealing packing 3, the columnar packing 4, the spring clamp head seat 5, the spring clamp head 6 and the sealing cover 7 are all publicly known and used; when the armored optical fiber is used, the two ends of the armored optical fiber 16 are respectively connected with the utility model, one end is positioned on the ground, and the other end is positioned under the well, so that well fluid can be effectively sealed, the pressure in the well can be effectively isolated, and the optical fiber can be protected from the influence of the well fluid and the high pressure in the well; like this, use through the cooperation of seal receptacle connector 1, packing brace 2, proclaim oneself packing 3, column packing 4, collet chuck 6 and sealed lid 7, realize the reliable sealed purpose of optic fibre end in well head and the high temperature and high pressure environment in the pit, have safe and reliable, sealed effectual and installation dismantle convenient characteristics, made things convenient for the operation, improved work efficiency, simultaneously greatly reduced manufacturing cost.

The optical fiber high-pressure sealing control head can be further optimized or/and improved according to actual needs:

as shown in fig. 1, a sealing installation groove 17 is arranged on the bottom end surface of the right installation groove 8, a gasket, a sealing ring 18 and a check ring are sequentially installed in the sealing installation groove 17 from left to right, and a right packing pad 9 is tightly pressed on the check ring; the communication hole 14 communicates with the seal installation groove 17. Thus, better sealing effect is achieved.

The seal ring 18 is an O-ring, if desired. Therefore, the O-shaped sealing ring is more practical and has better sealing effect.

As shown in fig. 1, a boss 19 is integrally fixed at the outer side of the middle part of the sealing seat connector 1, and the right end of the sealing cover 7 is pressed on the left end face of the boss 19; the right part of the sealing seat connector 1 is provided with external threads. Therefore, the purpose of limiting can be achieved, and materials are saved.

As shown in fig. 1, a quadrangular or hexagonal projection 20 is integrally fixed on the outer side of the right portion of the packing support sleeve 2, and the projection 20 is located on the right side of the seal seat connector 1. Thus, the packing support sleeve 2 can be mounted on the right mounting groove 8 more quickly by applying force on the convex block 20 through a tool, and the left end face of the packing support sleeve 2 is tightly pressed on the right end face of the self-sealing packing 3.

As shown in fig. 1, the sealing cover 7 and the sealing seat connector 1 are fixedly installed together through threads, the compression nut 13 is fixedly installed on the outer side of the left part of the collet chuck 6 through threads, the right part of the collet chuck seat 5 is fixedly installed on the left installation groove 10 through threads, and the left part of the packing support sleeve 2 is fixedly installed on the right installation groove 8 through threads. Thus, the installation and the disassembly of each component are convenient through the threads.

The utility model has the advantages that: (1) the end of the optical fiber tube is sealed by the metal sealing sleeve, so that the pressure resistance is high, and the sealing performance is stable and reliable; (2) the combination sealing mode of the columnar packing 4 and the O-shaped ring is adopted, so that safety measures are added for sealing the optical fiber end, and the optical fiber end is ensured to be sealed reliably; (3) the spring chuck 6 fixes the armored optical fiber 16, the holding force is large, the light pipe is not damaged, and the armored optical fiber 16 is ensured not to slide in the using process; the spring chuck 6 can be used for a plurality of times without damage, and has convenient installation and low use cost.

The working process of the utility model is as follows: (1) installing an O-shaped sealing ring 18 and a retainer ring and coating lubricating grease on the sealing ring 18; (2) sequentially enabling the armored optical fiber 16 to penetrate through a wire passing hole 15, a compression nut 13, a spring chuck 6, a spring chuck seat 5, a packing press cap 12, a columnar packing 4, a left packing pad 11, a communication hole 14, a gasket, a sealing ring 18 and a check ring on a sealing cover 7 from left to right, and then penetrating through a right packing pad 9, a self-sealing packing 3 and a packing support sleeve 2; (3) arranging the ends of the armored optical fibers 16 to be flush by using a pipe cutter; (4) withdrawing the armored optical fiber 16, and positioning the end with the optical fiber sealing head in the right mounting groove 8; (4) sequentially pushing a packing pressing cap 12, a columnar packing 4, a left packing pad 11, a check ring, an O-shaped sealing ring 18 and a gasket into the optical fiber sealing seat connector 1, screwing a spring clamp head seat 5 to an end face after confirming that the O-shaped sealing ring 18 enters a sealing face, and screwing a compression nut 13 on the spring clamp head seat 5; (5) screwing the sealed lower joint on the optical fiber sealing seat connector 1, screwing the pipe wrench, and screwing the set screw to prevent loosening; connect optic fibre seal receptacle connector 1 on coiled tubing, the breakout tongs is tightened, twists holding screw locking, realizes sealing head connection installation in the pit.

The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect, and unnecessary technical features can be increased or decreased according to actual needs to meet the requirements of different situations.

Claims

1. An optical fiber high-pressure sealing control head is characterized by comprising a sealing seat connector, a packing support sleeve, a self-sealing packing, a columnar packing, a spring clamp head seat, a spring clamp head and a sealing cover; a right mounting groove is formed in the right end face of the sealing seat connector, a right packing pad and a self-sealing packing are sequentially mounted in the right mounting groove from left to right, a packing support sleeve is fixedly mounted at the right end of the right mounting groove, and the left end face of the packing support sleeve is tightly pressed on the right end face of the self-sealing packing; be provided with left mounting groove on the left end face of seal receptacle connector, from the right side to left side install left packing pad in proper order in left mounting groove, cap is pressed to column packing and packing, left end fixed mounting at left mounting groove has the collet chuck seat, the right-hand member face of collet chuck seat is pressed tightly on the left end face of cap is pressed to the packing, left fixed mounting at the collet chuck seat has collet chuck, fixed mounting has the gland nut that enables collet chuck to press from both sides tightly on collet chuck, the inboard left part outside fixed mounting of the right part of sealed lid and seal receptacle connector is in the same place, collet chuck and gland nut all are located sealed lid, be equipped with the intercommunicating pore that is linked together in the seal receptacle connector between left mounting groove and the right mounting groove, be equipped with the line hole on sealed lid.

2. The optical fiber high-pressure sealing control head as claimed in claim 1, wherein a sealing mounting groove is provided on a bottom end surface of the right mounting groove, a gasket, a sealing ring and a retainer ring are sequentially mounted in the sealing mounting groove from left to right, and the right packing pad is pressed against the retainer ring; the communicating hole is communicated with the sealing installation groove.

3. The optical fiber high pressure seal control head according to claim 2, wherein the sealing ring is an O-ring.

4. The optical fiber high-pressure sealing control head as claimed in claim 1, 2 or 3, wherein a boss is integrally fixed at the outer side of the middle part of the sealing seat connector, and the right end of the sealing cover is pressed against the left end face of the boss; the right part of the sealing seat connector is provided with external threads.

5. The optical fiber high-pressure sealing control head according to claim 1, 2 or 3, wherein a quadrilateral or hexagonal projection is integrally fixed on the outer side of the right part of the packing support sleeve, and the projection is positioned on the right side of the sealing seat connector.

6. The optical fiber high-pressure sealing control head as claimed in claim 4, wherein a quadrilateral or hexagonal projection is integrally fixed on the outer side of the right portion of the packing support sleeve, and the projection is located on the right side of the sealing seat connector.

7. The optical fiber high-pressure seal control head as claimed in claim 1, 2 or 3, wherein the seal cover and the seal seat connector are fixedly mounted together by a screw thread, the gland nut is fixedly mounted on the outer side of the left portion of the collet chuck by a screw thread, the right portion of the collet chuck is fixedly mounted on the left mounting groove by a screw thread, and the left portion of the packing support sleeve is fixedly mounted on the right mounting groove by a screw thread.

8. The optical fiber high-pressure seal control head as claimed in claim 4, wherein the seal cover and the seal seat connector are fixedly mounted together by threads, the compression nut is fixedly mounted on the outer side of the left portion of the collet chuck by threads, the right portion of the collet chuck is fixedly mounted on the left mounting groove by threads, and the left portion of the packing support sleeve is fixedly mounted on the right mounting groove by threads.

9. The optical fiber high-pressure seal control head as claimed in claim 5, wherein the seal cover and the seal seat connector are fixedly mounted together by threads, the compression nut is fixedly mounted on the outer side of the left portion of the collet chuck by threads, the right portion of the collet chuck is fixedly mounted on the left mounting groove by threads, and the left portion of the packing support sleeve is fixedly mounted on the right mounting groove by threads.

10. The optical fiber high-pressure seal control head as claimed in claim 6, wherein the seal cover and the seal seat connector are fixedly mounted together by threads, the compression nut is fixedly mounted on the outer side of the left portion of the collet chuck by threads, the right portion of the collet chuck is fixedly mounted on the left mounting groove by threads, and the left portion of the packing support sleeve is fixedly mounted on the right mounting groove by threads.