RU34614U1 - DEVICE FOR FIXING A CABLE TO A PIPE OF PUMP AND COMPRESSOR PIPES (OPTIONS) - Google Patents

Abstract

1. A device for attaching a cable to a string of tubing, comprising a housing with a longitudinal recess for accommodating the cable, having protective shields configured to enclose a coupling for tubing, two clamping brackets pivotally connected to parts of the housing located along both sides of the protective shields and envelopes mentioned pipes, and locking mechanisms made in the form of locking protrusions located on the said parts of the housing, and fixing holes, is located на on the clamping brackets to accommodate the fixing protrusions, characterized in that the said parts of the housing are made with additional protective shields located on the edges of the housing with the possibility of partial enclosure of the pipes and protruding in the transverse direction beyond the transverse dimensions of the hinge joints, fixation sections of the brackets and parts of the housing, swivel joints are made in the form of an axis fixed in the axial direction and located in the bushings of the clamping bracket and the housing, the ends of the locking protrusions are made enchatoy shaped to cooperate with the walls of the fixing holes, wherein the protective shields are separated in the longitudinal direction of said housing parts at a distance equal to 0,9-17 mm, and the hardness of the material exceeds the hardness of the clamping bracket korpusa.2 material. The device according to claim 1, characterized in that the hardness of the material of the clamping bracket and parts of the locking mechanism is 38 ÷ 47 units. according to Brinell. 3. The device according to claim 1, characterized in that the pivot axis is axially fixed by means of a rigid connection in the core sleeve

Description

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DEVICE FOR FIXING A CABLE TO A PIPE OF PUMP AND COMPRESSOR PIPES (options)

The utility model relates to the oil industry, namely, devices for attaching a conductive cable to a string of tubing in a well.

Various solutions are known in the art for securing a power cable supplying energy to a submersible electric drive pump. So, for example, a device is known for attaching a cable to a tubing string, representing; it is a C-shaped spring clip (patent SU 1838571, 1993). One end of the bracket covers the pipe, the other end covers the cable. The cable is additionally tightened with a tongue protruding into the bracket and made at the same time with the bracket. The disadvantage of this device is the low reliability of the fixation of the cable and the complexity of manufacturing.

A device is known consisting of two pivotally connected C-shaped elements, on the inner surface of one of which there is a groove with an elastic insert for cable laying (patent GB 2101655, 1983). The free ends of the elements are provided with loops with compatible slots into which a wedge is inserted to fix the device in the closed position. The design is not convenient enough to work, since the latch is a separate part that is not connected to the device.

A device is also known, the housing parts of which are made of elastic non-metallic material (US Pat. No. 4,483,395, 1984) and are fixed by means of toothed brackets engaged with one another when the device is attached to the pipes. The device also performs the function of a tread, but it is fragile and not sufficiently reliable attached to the pipe and fixes the cable.

As the closest analogue of the proposed utility model, a device for attaching a cable to a tubing string described in RF certificate No. 16012 for a utility model is adopted.

A known device for attaching a cable to a tubing string includes a housing with a longitudinal recess for accommodating the cable, having protective shields and configured to cover the couplings for tubing, two clamping brackets pivotally connected respectively to the body parts located on both sides sides of the protective

IPC 7 E21B 17/00

screens and envelopes mentioned pipes, and locking mechanisms made in the form of locking protrusions located on the said parts of the housing, and locking holes located on the clamping brackets to accommodate the locking protrusions.

This device with the simplicity of design and reliability of fastening allows you to quickly install and remove the device from the pipe string, as well as reuse it for a long time, in particular, due to the installation of articulated and fixing elements from mechanical damage in the upper and lower parts. However, the known device is not safe from opening the clamps, since this mechanism is located at the edges of the device and is not protected from possible contact with objects that arise along the path of movement of the string in the casing if its axis deviates from the vertical. This is due to the possibility of uncoupling the locking protrusion with the locking hole during operation. The implementation of the housing and the clamping bracket from a material of the same stiffness does not contribute to increasing the reliability of the device as a whole due to the difference in the functions performed by these structural elements. So, the clamping bracket must withstand large loads on torsion, shear and shear, while the body must be made of durable material by stamping or bending.

The problem the utility model is aimed at is expanding technical capabilities by making it possible to use a device for attaching a cable to a pipe string in highly curved wells, due to the reliable and stable functioning of the locking mechanism, as well as the elastic compression of the tubing connected by a coupling that when you deviate from the vertical of the device allows you to transfer the load to the housing, preventing the spontaneous opening of the locks. Another objective is to simplify operating conditions and ensure a stable position of the attached cable relative to the tubing.

To solve this problem, two options for implementing the utility model are proposed. As a prototype for these options adopted a utility model according to the certificate of the Russian Federation No. 16012.

To solve the problem according to the first embodiment, in the known device for attaching a cable to a tubing string containing a housing with a longitudinal recess for accommodating the cable, having protective shields made with the possibility of cooling the coupling for tubing, two clamping brackets, sharply connected respectively, with parts of the housing located on both sides of the protective screens and enveloping the pipes, and locking mechanisms made in the form of locking protrusions located on and the said parts of the casing, and the fixing holes located on the clamping brackets to accommodate the fixing protrusions, the said parts of the casing are made with additional protective shields located on the edges of the casing with the possibility of partial enclosure of the pipes and protruding in the transverse direction beyond the transverse dimensions of the hinge joints, fixation sections brackets and parts of the housing, swivel joints are made in the form of an axis fixed in the axial direction and located in the clamping clamp bushings and the housing , The ends of the locking tongues vsholneny stepped shape for engagement with the walls of the fixing holes, wherein the protective shields are separated in the longitudinal direction of said housing parts at a distance equal to 0,9-17 mm, and the hardness of the material of the clamping bracket prevppaet hardness housing material.

There are other possible solutions to the implementation of the first embodiment of the utility model, according to which it is necessary that:

- the hardness of the material of the clamping bracket and parts of the locking mechanism would be equal to 38 47 units. according to Brinell;

- the swivel joint would be fixed in the axial direction by means of a rigid connection in the housing sleeve or the clamp holder;

- the spring element would consist of at least two towards the directed reeds, bent along an arc into the housing by up to 5.5 mm with a radius of curvature of the arc 60 - 114 mm;

-the transverse dimensions of the protective screen would be the corresponding dimensions of the additional protective screens, which would be the transverse dimensions of the clamping brackets and parts of the housing articulated by them.

tubing containing a housing with a longitudinal recess for accommodating the cable, having protective shields configured to enclose a coupling for tubing, two clamping brackets pivotally connected respectively to parts of the housing located on both sides of the shields and envelopes said pipes, locking mechanisms, made in the form of locking protrusions located on the said parts of the housing, and locking holes located on the clamping brackets for The clamping protrusions, the said parts of the housing are made with additional protective shields located at the edges of the housing with the possibility of partially enclosing the pipes and protruding in the transverse direction beyond the transverse dimensions of the hinge joints, fixing sections of the brackets and parts of the housing, the hinges are made in the form of an axis fixed in axial direction and located in the bushings of the clamping bracket and the housing, the ends of the locking protrusions are stepwise shaped with the possibility of interaction with holes of the fixing holes, while the mentioned parts of the housing and the protective screens form a tube-shaped part with an open side surface and various cross-section along its length, and the hardness of the material of the clamping bracket is the hardness of the material of the housing.

Other solutions of the second embodiment of the utility model are possible, according to which it is necessary that:

- the hardness of the material of the clamping bracket and parts of the locking mechanism would be equal to 38 47 units. according to Brinell;

-the swivel joint would be axially fixed by rigid connection in the housing sleeve or clamping sleeve;

- the spring element would consist of at least two towards the directed reeds, bent along an arc into the housing by up to 5.5 mm with a radius of curvature of the arc 60 - 114 mm;

-the transverse dimensions of the protective screen would exceed the corresponding dimensions of the additional protective screens, which would be the transverse dimensions of the clamping brackets and parts of the housing articulated by them.

The indicated features of the utility model embodiments are essential and interconnected causally with the formation of a set of essential features sufficient to achieve

technical result. A feature of the first option with respect to the second is the execution of the housing as if split, i.e. wired screens are separated in the longitudinal direction from the mentioned parts of the housing by a distance of 0.9-17 mm, and in the second embodiment, the parts of the housing with clamping brackets and protective shields form a tube-like part with an open side surface and a different cross-section along its length. The different performance of the case is due to the difference in manufacturing methods and the choice of material hardness.

The essence of the utility model is illustrated by drawings, where:

figure 1 shows a General view of a device for attaching a cable to a pipe string (option 1);

figure 2 is a view of figure 1 (option 1);

in Fig.3 - view B of Fig.1 (option 1);

figure 4 shows a General view of a device for attaching a cable to a pipe string (option 2);

in Fig.3 - view In Fig.4 (option 2);

in Fig.6 is a view of G in Fig.4 (option 2);

Fig.7 is a fragment of the locking mechanism of Fig.Z (enlarged).

in FIG. 8 - an example of the implementation of the fixation of the clamp bracket on the housing of the device using the mounting lever.

Options for implementing the utility model are illustrated by specific examples of implementation, which, however, are not the only ones possible, but clearly demonstrate the possibility of achieving this set of essential features of a given technical result.

According to the utility model according to the first and second options (Figs. 1,2,3,4,5,6,7), the device for attaching the cable to the pipe string comprises an elongated body 1 with a longitudinal groove 2 almost the entire length of the body for cable laying, clamping staples 3, which are connected by means of swivel joints 4 with the corresponding parts 5 of the housing 1 with the possibility of cooling the tubing string. The swivel joint 4 is made in the form of an axis 4 located in the bushings, mounted on the housing 1 or clamping bracket and fixed in the axial direction by rigid connection in the sleeve of the housing 1 or the sleeve of the clamping bracket 3.

in order to tightly and resiliently compress the pipes with clamping clamps 3 and the latter, spring elements are made in the form of arcuate bent along an arc inside the housing to a value of up to 5.5 mm with a radius of curvature of the arc of 60 - 114 mm of tongues 6. The spring element may consist of several, for example , two counter-directed reeds 6. The radius of curvature of the reeds is determined by the dimensions of the tubing being connected and the type of coupler.

The locking mechanism is implemented in the form of a locking protrusion 7 located on the housing 1, and a locking hole 8 to accommodate the corresponding locking protrusion 7 when mounting the device. In this case, the ends 7 (Fig. 7) of the fixing protrusions 7 are made in a stepped form with the possibility of interaction with the walls 8 of the fixing holes 8, if necessary, each step separately. A large step plays the role of a locking protrusion, preventing the clamping bracket 3 from sliding off the locking protrusion 7.

At the free end of each clamp bracket 3, a mounting hole 9 is made, on parts 5 of the housing 1 there is a counter mounting hole 10 for interacting with the mounting lever, with which the device is locked or unlocked.

At the ends of the recess 2 on the housing 1, sections 11 are bent into the housing 1, allowing reliable fixation of the cable relative to the pipes, pressing it to the pipe.

In the middle part of the housing 1 between the clamping brackets 3 there is a protective screen consisting of two parts 12 and 13. In the first embodiment, the protective screen (Fig. 1,2,3) is separated in the longitudinal direction from the said parts of the housing by a distance "a equal to 0 , 9-17 mm, and in the second embodiment, the mentioned parts of the housing 5 and parts 12 and 13 of the protective screen and additional protective screens 14 and 15 (Figs. 4,5,6) form a tube-shaped part with an open side surface and a different cross section along it length.

In order to increase the reliability of the operation of the device, taking into account the difference in the functions performed by the housing 1 and the clamping bracket 3, the hardness of the latter is chosen higher than the hardness of the material of the housing 1. Preferably, the hardness of the material of the clamping bracket 3 and parts of the locking mechanism is chosen to be 38 - 47 units. according to Brinell

In order to expand technical capabilities, additional protective shields 14 and 15 are located on the housing 1 along its edges, designed to protect the locking mechanism and swivel joints 4 and their parts from exposure to solid objects along the device.

The operation of the device in both versions of the utility model is the same. The installation of the device on the column tubing located in the process of oil production in a vertical position, is as follows. A cable is laid in the longitudinal groove 2 of the housing 1, as a rule, the cable has a rectangular cross-section in shape that fits snugly to the base of the groove 2. Then, the device is “put on the sleeve connecting the tubing in the string and secured with stapled brackets 3 and lower than the connecting couplings. In this case, the clamping brackets 3 tightly tightly cover the pipes connected by the coupling, and the protective shield covers the connecting sleeve with its parts 12 and 13. Since the diameter of the couplings is greater than the diameter of the tubing connected by it in the column, the housing 1 at this point has the maximum dimensions in the radial direction, namely in the area of the shield screen.

Cable fasteners are installed along the length of the pipe string at the points where they are connected by couplings. All tension and fixing elements are located in the protected area above and below the sleeve and do not touch the walls of the casing, which ensures reliable fastening and protection of the cable from mechanical stress during operation. The parts of the protective screen 12, 13 and additional protective screens 14 and 15, protruding outward to a greater extent than the hinge joints 4 and the locking protrusions 7, protect these elements from mechanical damage in contact with the walls of the casing.

The fastening is carried out using a special mounting lever, which can serve as a metal rod with a pointed end, a screwdriver, a specially made key, etc. The mounting lever 14 of Fig. 8 is inserted into the mounting hole 9 at the end of the clamping bracket 3 and start its end into the oncoming mounting hole 10 on the corresponding part 5 of the housing 1. Then, the lever handle 14 is moved to the side and “pull the clamp bracket 3 on the locking protrusion 7 to a lower step (Fig. 7), overcoming the elastic properties of the spring element. The clamping occurs when the clamping bracket 3 with its fixing hole 8 "sits on a smaller step of the locking protrusion 7. In this case

clamping brackets 3 tightly compress the pipes, and the locking mechanism is blocked from spontaneous opening by a larger step (Fig. 7), due to the arrangement of the steps of the fixed) protruding protrusion 7 shown in Fig. 7.

To unlock the device, it is enough to pick up the end of the clamping bracket 3 with the mounting lever 14 and remove it from the locking protrusion 7 located on part 5 of the housing 1.

The application of the utility model provides the expansion of technical capabilities by using a device for attaching a cable to a pipe string in highly curved wells, by reducing the width of the brackets compared to parts of the body enveloping the tubing string, which, when deviated from the vertical of the device, allows transferring the load to the body preventing unauthorized opening of the clamps.

Claims (10)

1. A device for attaching a cable to a string of tubing, comprising a housing with a longitudinal recess for accommodating the cable, having protective shields configured to enclose a coupling for tubing, two clamping brackets pivotally connected to parts of the housing located along both sides of the protective shields and envelopes mentioned pipes, and locking mechanisms made in the form of locking protrusions located on the said parts of the housing, and fixing holes, is located на on the clamping brackets to accommodate the fixing protrusions, characterized in that the said parts of the housing are made with additional protective shields located on the edges of the housing with the possibility of partial enclosure of the pipes and protruding in the transverse direction beyond the transverse dimensions of the hinge joints, fixation sections of the brackets and parts of the housing, swivel joints are made in the form of an axis fixed in the axial direction and located in the bushings of the clamping bracket and the housing, the ends of the locking protrusions are made enchatoy shaped to cooperate with the walls of the fixing holes, wherein the protective shields are separated in the longitudinal direction of said housing parts at a distance equal to 0,9-17 mm, and the hardness of the material exceeds the hardness of the clamping bracket body material. 2. The device according to claim 1, characterized in that the hardness of the material of the clamping bracket and parts of the locking mechanism is 38 ÷ 47 units. according to Brinell. 3. The device according to claim 1, characterized in that the pivot axis is fixed in the axial direction by means of a rigid connection in the housing sleeve or the clamping sleeve. 4. The device according to claim 1, characterized in that the spring element consists of at least two towards the reeds, bent along an arc inside the housing by up to 5.5 mm with a radius of curvature of the arc of 60-114 mm. 5. The device according to claim 1, characterized in that the transverse dimensions of the protective screen exceed the corresponding dimensions of the additional protective screens, which exceed the transverse dimensions of the clamping brackets and parts of the housing articulated with them. 6. A device for attaching a cable to a string of tubing, comprising a housing with a longitudinal recess for accommodating the cable, having protective shields configured to enclose couplings for tubing, two clamping brackets pivotally connected respectively to parts of the housing located on both sides of the protective shields and envelopes mentioned pipes, locking mechanisms made in the form of locking protrusions located on the said parts of the housing, and fixing holes located on the clamping brackets to accommodate the locking protrusions, characterized in that the said parts of the housing are made with additional protective shields located on the edges of the housing with the possibility of partial enclosure of pipes and protruding in the transverse direction beyond the transverse dimensions of the hinge joints, fixation sections of the brackets and parts of the housing , the swivel joints are made in the form of an axis fixed in the axial direction and located in the bushings of the clamping bracket and the housing, the ends of the locking protrusions in They are made in a stepped form with the possibility of interaction with the walls of the fixing holes, while the mentioned parts of the housing and protective screens form a tube-like part with an open side surface and various cross-sections along its length, and the hardness of the material of the clamping bracket exceeds the hardness of the material of the housing. 7. The device according to claim 6, characterized in that the hardness of the material of the clamping bracket and parts of the locking mechanism is 38 ÷ 47 units. according to Brinell. 8. The device according to claim 6, characterized in that the pivot axis is axially fixed by means of a rigid connection in the sleeve of the housing or the sleeve of the clamping bracket. 9. The device according to claim 6, characterized in that the spring element consists of at least two towards the reeds, bent along an arc inside the housing by up to 5.5 mm with a radius of curvature of the arc of 60-114 mm. 10. The device according to claim 6, characterized in that the transverse dimensions of the protective screen exceed the corresponding dimensions of the additional protective screens, which exceed the transverse dimensions of the clamping brackets and parts of the housing articulated with them.