Cable-passing insertion seal

Abstract

The utility model discloses a cable-passing insertion seal, which belongs to the technical field of petroleum drilling and production downhole tools and comprises a seal main body, circular grooves are formed in the top end and the bottom end of the seal main body, a plurality of circular grooves are in one-to-one correspondence up and down, and a cable-passing hole is formed between every two circular grooves which are in one-to-one correspondence up and down. Thread clamping devices are arranged in the multiple circular grooves in the top of the sealing body, each thread clamping device comprises a first clamping plate, a second clamping plate is arranged on one side of each first clamping plate, multiple first mounting grooves are formed in the side, close to the corresponding second clamping plate, of each first clamping plate, and multiple second mounting grooves are formed in the side, close to the corresponding first clamping plate, of each second clamping plate. According to the utility model, the plurality of circular grooves and the wire passing holes are arranged to satisfy the installation of multiple cables, and the first clamping plate, the second clamping plate and the pull rope are matched to assist workers in installing the cables and prevent the contact between the cables and the inner walls of the wire passing holes from being hindered, so that the laying of the cables can be quickly completed, the structure is simple, and the operation is very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of downhole tools for oil drilling and production, and belongs to a cable insertion seal. Background Art

[0002] In the existing oil and water wells, separation and injection and related measures, such as stratified oil production, stratified water injection (polymer injection), stratified profile adjustment, and one well with multiple uses, insertion seals and positioning seals have always played an important role. Although the stratified production technology using insertion seals has a good sealing effect, conventional insertion seal tools do not have a test cable passage channel. The cable is placed on the outside of the insertion seal, which affects the interlayer sealing. At the same time, because the cable is exposed at the bottom of the well, the service life of the cable is shortened, and stratified monitoring cannot be achieved, which is not conducive to stratified production. Therefore, the existing cable insertion seal will set a wire hole on the sealing body for laying the cable.

[0003] For example, the prior art publication number is CN206091929U, which is a new type of cable insertion seal. A cable passage for the cable to pass through is axially arranged on the side wall of the seal body. Different from the conventional inner and outer cylinder insertion seal, the cable can directly pass through the side wall of the seal body. The upper and lower ends of the cable passage are provided with NPT threads to tighten the cable. While ensuring good layered sealing, it can also ensure the insertion of the cable.

[0004] However, the above-mentioned prior art still has the following problems when used: when installing the cable, due to the small inner diameter of the wire hole and the soft material of the cable itself, it will contact the inner wall of the wire hole. After being blocked by the inner wall of the wire hole, the installation efficiency is too slow and a lot of time is required for installation. Based on this, the utility model provides a cable insertion seal that is convenient for installing cables. Utility Model Content

[0005] To this end, the utility model provides a cable insertion seal to solve the problem in the prior art that the cable is blocked by the inner wall of the cable hole, resulting in low cable installation efficiency.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An over-cable insertion seal includes a seal body. Circular grooves are provided at both the top and bottom of the seal body, and multiple circular grooves correspond to each other vertically. A wire passing hole is provided between two vertically corresponding circular grooves. Clamping devices are provided in multiple circular grooves located at the top of the seal body. Each clamping device includes a first clamping plate, and a second clamping plate is provided on one side of the first clamping plate. Multiple first installation grooves are provided on one side of each first clamping plate close to the second clamping plate, and multiple second installation grooves are provided on one side of each second clamping plate close to the first clamping plate. A return spring is fixedly provided in each first installation groove, and one end of the return spring is fixed to the inner wall of the second installation groove. A pulling rope is fixedly provided at the bottom of each first clamping plate, and the bottom end of the pulling rope penetrates through the circular groove at the bottom of the seal body. By using the pulling rope to pull the first clamping plate and the second clamping plate to drive the cable to move, it is convenient to quickly pass the cable through the wire passing hole.

[0008] Further, a telescopic rod is provided inside each return spring, and both ends of the telescopic rod are fixed to the inner walls of the first installation groove and the second installation groove respectively. The telescopic rod is used to limit the return spring, so as to improve the stability of the return spring during expansion and contraction, and avoid the deviation of the return spring from affecting the closing of the first clamping plate and the second clamping plate.

[0009] Further, a plurality of clamping blocks are fixedly provided at the bottom end of each second clamping plate, and a plurality of clamping slots are provided on the inner walls of a plurality of circular grooves located at the top of the seal body. The plurality of clamping blocks are respectively clamped with the plurality of clamping slots. When the first clamping plate and the second clamping plate are not in use, the clamping blocks are inserted into the clamping slots to fix the first clamping plate and the second clamping plate, so as to avoid the shaking of the first clamping plate and the second clamping plate.

[0010] Further, sealing covers are sleeved on both the top and bottom of the seal body. A plurality of wire passing holes are provided on one side of each of the two sealing covers away from the seal body for the staff to install the cable.

[0011] Further, the plurality of wire passing holes respectively correspond to the plurality of circular grooves one by one. A plurality of rubber sheets distributed in an annular array are fixedly provided inside each wire passing hole, and the plurality of rubber sheets are closely adjacent to each other in sequence. When the sealing cover is not in use, the plurality of rubber sheets can maintain the sealing performance of the wire passing hole.

[0012] Further, annular slots are provided at both the top and bottom of the seal body, and the two sealing covers are respectively inserted into the two annular slots. By covering the top and bottom of the seal body with the sealing covers, the wire joints of the cable can be protected.

[0013] Further, a plurality of limiting blocks are fixedly provided on the outer wall surfaces of the two sealing covers, and a plurality of limiting slots are provided on the inner walls of the two annular slots. The plurality of limiting blocks are respectively arranged in the plurality of limiting slots. By using the cooperation of the limiting blocks and the limiting slots, it is convenient to quickly insert the sealing cover into the annular slot and improve the installation efficiency of the sealing cover.

[0014] Furthermore, the top and bottom ends of the sealing body are both threadedly connected with joints that are connected to the inside of the sealing body, and are used for assembling multiple sealing bodies.

[0015] The utility model has the following advantages:

[0016] 1. The utility model meets the installation requirements of multiple cables by arranging multiple circular grooves and wire holes, and uses the first clamping plate, the second clamping plate and the pull rope to assist the staff in installing the cables, so as to avoid the cables being hindered from contacting the inner wall of the wire holes, so that the cables can be laid quickly, the structure is simple, and the operation is very convenient.

[0017] 2. By using two sealing covers at the top and bottom of the sealing body to seal, it is convenient to protect the cable wire joints. At the same time, the use of bolts to fix the sealing covers makes it easy for workers to install and remove the sealing covers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0020] Figure 1 The overall structural diagram provided by the utility model;

[0021] Figure 2 A sectional view of the overall structure provided by the utility model;

[0022] Figure 3 Provided for the utility model Figure 2 A magnified view of part A in FIG.

[0023] Figure 4 A cross-sectional view of a first clamping plate and a second clamping plate provided by the utility model;

[0024] Figure 5 The sealing cover and the sealing body structure diagram provided by the utility model;

[0025] Figure 6 This is a partial enlarged view provided by the present utility model.

[0026] In the figure: 1, sealing main body; 2, circular groove; 3, wire passing hole; 4, wire clamp; 5, telescopic rod; 6, clamping block; 7, clamping groove; 8, sealing cover; 9, wire threading hole; 10, rubber sheet; 11, annular slot; 12, limiting block; 13, limiting groove; 14, joint.

[0027] 401, first clamping plate; 402, second clamping plate; 403, first installation groove; 404, second installation groove; 405, return spring; 406, pull rope. Specific embodiments

[0028] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Referring to the attached Figures 1-6 of the specification, the present utility model provides a cable insertion seal, including a sealing main body 1. Threaded connections are provided at both the top and bottom of the sealing main body 1 with joints 14 communicating with the inside of the sealing main body 1 for assembling the sealing main body 1. Circular grooves 2 are opened at both the top and bottom of the sealing main body 1, and multiple circular grooves 2 correspond to each other up and down. A wire passing hole 3 is opened between two circular grooves 2 corresponding to each other up and down. Wire clamps 4 are provided in multiple circular grooves 2 at the top of the sealing main body 1;

[0030] Specifically, each wire clamp 4 includes a first clamping plate 401, and a second clamping plate 402 is provided on one side of the first clamping plate 401. Multiple first installation grooves 403 are opened on one side of each first clamping plate 401 close to the second clamping plate 402, and multiple second installation grooves 404 are opened on one side of each second clamping plate 402 close to the first clamping plate 401;

[0031] Moreover, a return spring 405 is fixedly provided in each first installation groove 403. One end of the return spring 405 is fixed to the inner wall of the second installation groove 404. A pull rope 406 is fixedly provided at the bottom of each first clamping plate 401. The bottom end of the pull rope 406 penetrates through the circular groove 2 at the bottom of the sealing main body 1. By using the pull rope 406 to pull the first clamping plate 401 and the second clamping plate 402 to drive the cable to move, it is convenient to quickly lay the cable;

[0032] Inside each reset spring 405, there is a telescopic rod 5. The two ends of the telescopic rod 5 are respectively fixed to the inner walls of the first installation groove 403 and the second installation groove 404. The telescopic rod 5 is used to limit the reset spring 405, thereby improving the stability of the reset spring 405 during expansion and contraction and avoiding the deviation of the reset spring 405 from affecting the closing of the first clamping plate 401 and the second clamping plate 402.

[0033] Moreover, a plurality of clamping blocks 6 are fixedly provided at the bottom end of each second clamping plate 402. A plurality of clamping grooves 7 are provided on the inner walls of a plurality of circular grooves 2 at the top of the sealing body 1. The plurality of clamping blocks 6 are respectively clamped with the plurality of clamping grooves 7. When the first clamping plate 401 and the second clamping plate 402 are not in use, the clamping blocks 6 are inserted into the clamping grooves 7 to fix the first clamping plate 401 and the second clamping plate 402, thereby avoiding the shaking of the first clamping plate 401 and the second clamping plate 402.

[0034] During use, by providing a plurality of circular grooves 2 and wire passing holes 3 on the sealing body 1, when installing the cable, the staff first takes out the first clamping plate 401 and the second clamping plate 402 from the circular grooves 2, then pulls open the first clamping plate 401 and the second clamping plate 402 and slews them on the cable. After releasing the first clamping plate 401 and the second clamping plate 402, the cable, the first clamping plate 401 and the second clamping plate 402 can be aligned with the wire passing hole 3. At the same time, by pulling the pull rope 406, the cable can be passed through the wire passing hole 3, avoiding the cable from being hindered by contacting the inner wall of the wire passing hole 3. In this way, the laying of the cable can be quickly completed, with a simple structure and very convenient operation.

[0035] Refer to the attached Figures 1-6 description. Sealing covers 8 are sleeved on the top end and the bottom end of the sealing body 1 respectively. A plurality of wire passing holes 9 are provided on the sides of the two sealing covers 8 away from the sealing body 1 for installing the cable. The plurality of wire passing holes 9 correspond to the plurality of circular grooves 2 one by one. A plurality of rubber sheets 10 are fixedly provided inside each wire passing hole 9 and are distributed in an annular array. The plurality of rubber sheets 10 are closely adjacent to each other in sequence. When the sealing covers 8 are not in use, the plurality of rubber sheets 10 can keep the wire passing holes 9 airtight.

[0036] In addition, annular slots 11 are provided at the top and bottom of the sealing body 1. The two sealing covers 8 are respectively inserted into the two annular slots 11. By covering the top and bottom of the sealing body 1 with the sealing covers 8, the wire joints of the cable can be protected. A plurality of limiting blocks 12 are fixedly provided on the outer wall surfaces of the two sealing covers 8. A plurality of limiting grooves 13 are provided on the inner walls of the two annular slots 11. The plurality of limiting blocks 12 are respectively arranged in the plurality of limiting grooves 13. By using the cooperation of the limiting blocks 12 and the limiting grooves 13, the sealing covers 8 can be quickly inserted into the annular slots 11, improving the installation efficiency of the sealing covers 8.

[0037] Two sealing covers 8 are arranged on the sealed body 1. The sealing covers 8 are fixed by bolts, and positioned by the limit blocks 12 and the limit grooves 13, which can facilitate the staff to quickly insert the sealing covers 8 and the sealed body 1 together. The sealing covers 8 are used to cover the top and bottom ends of the sealed body 1, and a plurality of wire passing holes 9 are arranged on the sealing covers 8, which is convenient for the staff to pass the external cables through the wire passing holes 9 and cable joint with the cables in the wire passing holes 3. Using the sealing covers 8 can protect the wire joints at the two cable locations.

[0038] Although the present invention has been described in detail with general descriptions and specific embodiments above, based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

Claims

1. A cable insertion seal, comprising a sealing body (1), characterized in that: The sealing body (1) is provided with circular grooves (2) at the top and bottom, the plurality of circular grooves (2) correspond to each other, and a wire hole (3) is provided between two circular grooves (2) that correspond to each other. A plurality of circular grooves (2) located at the top of the sealing body (1) are each provided with a wire clamp (4), each wire clamp (4) comprising a first clamp (401), a second clamp (402) being provided on one side of the first clamp (401), a plurality of first installation grooves (403) being provided on one side of each first clamp (401) close to the second clamp (402), and a plurality of second installation grooves (404) being provided on one side of each second clamp (402) close to the first clamp (401); A return spring (405) is fixedly provided in each first installation groove (403), one end of the return spring (405) is fixed to the inner wall of the second installation groove (404), and a pull rope (406) is fixedly provided at the bottom of each first clamping plate (401), the bottom end of the pull rope (406) passes through the circular groove (2) at the bottom of the sealing body (1).

2. A cable insertion seal according to claim 1, characterized in that: A telescopic rod (5) is provided inside each return spring (405), and two ends of the telescopic rod (5) are respectively fixed to the inner wall of the first installation groove (403) and the inner wall of the second installation groove (404).

3. A cable insertion seal according to claim 1, characterized in that: A plurality of clamping blocks (6) are fixedly provided at the bottom end of each second clamping plate (402), a plurality of clamping grooves (7) are provided on the inner walls of the plurality of circular grooves (2) at the top of the sealing body (1), and the plurality of clamping blocks (6) are respectively clamped with the plurality of clamping grooves (7).

4. A cable insertion seal according to claim 1, characterized in that: The top and bottom ends of the sealing body (1) are both sleeved with sealing covers (8), and a plurality of threading holes (9) are provided on the sides of the two sealing covers (8) away from the sealing body (1).

5. A cable insertion seal according to claim 4, characterized in that: The plurality of threading holes (9) correspond to the plurality of circular grooves (2) one by one, respectively, and a plurality of rubber sheets (10) distributed in a circular array are fixedly arranged inside each threading hole (9).

6. A cable insertion seal according to claim 4, characterized in that: The sealing body (1) is provided with an annular slot (11) at the top and the bottom, and the two sealing covers (8) are respectively inserted into the two annular slots (11).

7. A cable insertion seal according to claim 6, characterized in that: A plurality of limit blocks (12) are fixedly provided on the outer wall surfaces of the two sealing covers (8), a plurality of limit grooves (13) are provided on the inner walls of the two annular slots (11), and the plurality of limit blocks (12) are respectively arranged in the plurality of limit grooves (13).

8. The cable insertion seal according to claim 1, characterized in that: The top and bottom ends of the sealing body (1) are both threadedly connected with a connector (14) that is in communication with the interior of the sealing body (1).

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