RU2313652C1 - Protectolizer for extension cable of submersible pumping plant protection - Google Patents

Abstract

FIELD: oil industry, particularly means to connect extension cable to pump sections and to provide hydraulic protection of oil producing electric-centrifugal pump.

SUBSTANCE: protectolizer comprises body composted of two parts. The body has lid and grip pivotally 5 connected with each other, releasable lock connection with fixing members 7 and protective yoke 9. Protectolizer body may be put on cylindrical or hexahedral pump base neck to provide hydraulic protection thereof. Protectolizer lid has groove for angular displacement prevention by groove cooperation with base flange flat. Protective yoke is connected to lid by means of screws 10 so that radial space is defined to prevent longitudinal displacement of extension cable having any cross-section.

EFFECT: extended field of application and increased fastening reliability.

11 dwg, 2 tbl

Description

The invention relates to the oil industry and can be used to attach a cable extension to sections of the pump and hydroprotection of an electric centrifugal pump (ESP) for oil production.

A device for attaching a cable to a pipe string is known, including a housing made in the form of a bracket with working surfaces for covering the cable and tubing (AS No. 1838571, 08.30.93, BI No. 322).

The design of this device allows you to use it only for attaching the cable to the tubing.

Known tread for attaching an electric cable to the installation of an electric centrifugal pump, made in the form of a prefabricated housing, the details of which are pivotally interconnected and equipped with locking grooves, a detachable locking connection with fasteners and a protective collar (PM No. 47043, 10/08/2005).

This protector does not provide reliable fixation against longitudinal movement of the cable extension with various cross-sections, and emphasis is placed on fasteners, which reduces the protection of the cable extension against radial movements.

An object of the invention is to expand the scope and increase the reliability of fastening the cable extension to the sections of the pump and hydraulic protection.

This problem is solved in that the protectorizer for protecting the cable extension of the submersible pump installation contains a two-part housing, consisting of a cover and a grip pivotally connected to each other, a detachable lock connection with locking elements and a protective collar. According to a utility model, the protectorizer housing is configured to fit both on a cylindrical and on a hexagonal neck of the pump base and hydroprotection.

In this case, fixing from angular movement is provided by a groove in the protectorizer lid by landing on the flange of the base flange, and the protective collar is mounted on the lid with screws with a radial clearance, which secures the cable extension of various cross sections from longitudinal movement.

Figure 1 is a diagram of the mounting of the cable extension to the sections of the pump and hydroprotection. Figure 2 shows the installation of the protector type "PL-G5" on the basis of hydraulic protection with a hexagonal neck. Figure 3 - section aa in figure 2. Figure 4 shows the installation of the protector type "PL-G5" on the basis of hydraulic protection with a round neck. Figure 5 - section aa in figure 4. 6 is a section bB in figure 4. Figure 7 shows the installation of the protector type "PL-N5A" on the basis of the pump section with a hexagonal neck. Fig.8 is a section aa in Fig.7. Figure 9 shows the installation of the protector type "PL-N5A" on the basis of the pump section with a round neck. Figure 10 - section aa in figure 9. 11 is a section bB in Fig.9.

On Fig given a table of dimensions of the cable extension used for the manufacture of current lead. On Fig given a table of applicability of the protector.

The protectorizer for protecting the cable extension of the submersible pump installation is mounted on the neck of the base of the pump 1 and the hydroprotection 2 and is a two-part case containing a cover 3 with a groove for fixing the cable extension and a gripper 4 connected by a hinge 5. The protectorizer housing is installed at the points of attachment of the cable extension - in zone of the neck of the pump base and hydraulic protection by means of a detachable lock connection 6, which is pulled together by a screw 7 with a spring washer 8, which prevents spontaneous loosening screw 7 under the action of vibration that occurs during operation of the installation in the well. The clamp 9, attached to the cover 3 with screws 10, fixes the cable extension in the cover 3 and protects it from mechanical damage during tripping and during operation of the installation. The radial clearance 11 allows you to fix the cable extension with a different cross-section (Fig). When the protectorizer body is planted on the cylindrical surface 12 of the pump base and the hydroprotection, the contact is made along generatrix 13, and when landing on the hexagonal surface, along the sides 14. Fixation of the angular movement of the PL-G5 protectorizer case when using a base with a round neck (Fig. 6) is provided by a groove 15 on the cover 3, which abuts against the flange 16 of the base of the hydraulic protection. The fixation from the angular movement of the body protector of the type “PL-N5A”, “PL-G5A”, “PL-N6”, “PL-G6” (Fig.11) in the case of using the base with a round neck is provided by stops 17.

Installation of the protector of the cable extension of the submersible pump installation is as follows. The protectorizer housing is installed on the neck of the base 18 of the pump 1 and the hydraulic protection 2 and is fixed with a screw 7, after which the cable extension 19 is inserted into the groove of the cover 3 and pressed by the clamp 9 with the screws 10.

This design protectorizer provides quick installation and dismantling during tripping operations on the well, eliminates radial and longitudinal movement of the protectorizer and, accordingly, cable extension, focusing on the body of the base, and not on the fasteners of the submersible pump installation, and also due to the streamlined shape of the cover eliminates jamming for protrusions casing string.

Claims (1)

Protectolizer for protecting a cable extension of a submersible pump installation, comprising a two-part case, consisting of a lid and a grip pivotally connected to each other, a detachable lock connection with fasteners and a protective collar, characterized in that the protectorizer body is designed to fit both on a cylindrical and on a hexagonal neck of the pump base and hydraulic protection, and fixing from angular movement when using the base with a round neck is provided by a groove in the cover of the protecton jaser by landing on the flange of the pump base flange, and the protective collar is mounted on the cover with screws with a radial clearance that secures the cable extension of various cross sections from longitudinal movement.

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