CN203230357U

CN203230357U - Hydraulic slip

Info

Publication number: CN203230357U
Application number: CN 201320115664
Authority: CN
Inventors: 何云华; 许波兵; 陈世龙; 高亚杰
Original assignee: JIANGSU RUTONG PETRO-MACHINERY Co Ltd
Current assignee: JIANGSU RUTONG PETRO-MACHINERY Co Ltd
Priority date: 2013-03-12
Filing date: 2013-03-12
Publication date: 2013-10-09
Anticipated expiration: 2023-03-12

Abstract

The utility model discloses a hydraulic slip which comprises a casing, a lifting mechanism and four identical slip assemblies arranged in the casing. The casing comprises a first casing and a second casing, and the lifting mechanism comprises a balance beam, a hydraulic cylinder and a slip support connecting rod. The hydraulic slip is characterized in that a first boss and a second boss are arranged on an outer wall of the first casing and an outer wall of the second casing respectively, and a travel switch is installed between the balance beam and the casing. The hydraulic slip has the advantages that the whole hydraulic slip is low in height and is installed in a wellbay turnplate, a headframe operating space is saved, the borne torque is 35000ft/lbs to the largest extent, users do not use back-up tongs any longer, and the hydraulic slip is convenient to use and has safety and reliability in clamping.

Description

Hydraulic pressure pipe slips

Technical field

The utility model relates to a kind of slip system, particularly relates to a kind of hydraulic pressure pipe slips.

Background technology

The drilling well slips is that its inwall has many steel teeth at the outstanding special tool of holding drilling tool of well head.The instrument that holds sleeve pipe in existing oil, natural gas operation mainly contains: 1, manual casing slip, and the multiple-piece structure, this slips volume is big, and weight is big, and labor strength is big, and inefficiency and safety are not high; 2, air operated slips formula casing elevator can realize the automatic lifting of slips body, but this device volume is huge, and is installed in the rotating disk top, makes that complete machine height distance plane of rotor disc is higher, and using to hydraulic tongs makes troubles; 3, air operated slips can be realized the slips automatic lifting, and is installed in the rotating disk, has saved the space, but can not bearing torque.

The utility model content

The purpose of this utility model is to solve the defective that existing slip system can not bear moment of torsion, provides a kind of rational in infrastructure, and lifting force is big, and the scope that holds is wide, and hydraulic power slips safe and reliable, easy and simple to handle that can bearing torque solves the problems referred to above.

To achieve these goals, the technical solution of the utility model is as follows:

A kind of hydraulic pressure pipe slips, comprise: housing, hoisting mechanism and be arranged on four identical slip assemblies of enclosure interior, described housing comprises first shell, second shell, described hoisting mechanism comprises equalizer bar, hydraulic cylinder and slips rack rod, it is characterized in that, be respectively equipped with first boss and second boss on the outer wall of described first shell and second shell, between described equalizer bar and the housing travel switch be installed.

In the utility model, described first shell is fixedlyed connected by two joint pins with second shell.

In the utility model, described slip assemblies comprises slips body and dental lamina.

In the utility model, described travel switch is the roller type travel switch.

In the utility model, the top of described housing is provided with the top guide strip, and the bottom of housing is provided with the bottom guide ring.

The beneficial effects of the utility model are mainly reflected in: the complete machine height is low, is installed in during use in the raised platform around a well rotating disk, has saved the derrick operating space, and maximum can be carried the moment of torsion that can bear 35000ftlbs, the user can not re-use back-up tong, and is easy to use, holds safety, reliable.

Description of drawings

Fig. 1 is vertical view of the present utility model;

Fig. 2 is the sectional drawing of 1/4 part of the present utility model.

The specific embodiment

Because hydraulic pressure pipe slips of the present utility model inside is made up of identical four parts, therefore, be that example describes with a part wherein only in the present embodiment, referring to Fig. 1 and Fig. 2, first shell 110 is fixedlyed connected with 220 by two joint pins 210 with second shell 120, form housing, be first roof beam structure 310 and second roof beam structure, the 320 mutual chimeric formation equalizer bars of U-shaped structure, in forming, equalizer bar and housing connect relation, the outer wall of first shell 110 is provided with first boss 111, the outer wall of second shell 120 is provided with second boss 121, be provided with between the inwall of first shell 110 and first roof beam structure 310 between the inwall of travel switch 400, the second shells 120 and second roof beam structure 320 and be provided with hydraulic control valve 500.The top of housing also is provided with top guide strip 600, and the bottom also is provided with bottom guide ring 900, and bottom guide ring 900 mainly play the guiding role, and guarantees that tubing string is placed in the middle; Equalizer bar, hydraulic cylinder 700 and slips rack rod 1100 are formed hoisting mechanism together, slips body 800 and dental lamina 810 constitute slip assemblies, in drilling well casing job process, sleeve pipe holds by slip assemblies, slips body 800 links to each other with first roof beam structure 310 by slips rack rod 1100, the piston rod of hydraulic cylinder 700 passes through bolt, nut is fixedlyed connected with first roof beam structure 310, hydraulic cylinder 700 piston rod movements drive equalizer bar moves up and down like this, equalizer bar drives slips rack rod 1100 again and moves up and down, slips rack rod 1100 drives slip assemblies again and moves up and down, thereby the realization slip assemblies rises and unclamps tubing string, slip assemblies falls the function that holds tubing string, and, transfer to the contact 410 of contacting travel switch 400 when slip assemblies after, hydraulic valve 500 is started working, hydraulic cylinder 700 pressure increase gradually, and to hold tubing string more firm for slip assemblies like this.

Claims

1. hydraulic pressure pipe slips, comprise: housing, hoisting mechanism and be arranged on four identical slip assemblies of enclosure interior, described housing comprises first shell, second shell, described hoisting mechanism comprises equalizer bar, hydraulic cylinder and slips rack rod, described hoisting mechanism is fixed on enclosure interior, described slips body is fixedlyed connected with the equalizer bar of hoisting mechanism by the slips rack rod, it is characterized in that, be respectively equipped with first boss and second boss on the outer wall of described first shell and second shell, between described equalizer bar and the housing travel switch be installed.

2. hydraulic pressure pipe slips according to claim 1 is characterized in that, described first shell is fixedlyed connected by two joint pins with second shell.

3. hydraulic pressure pipe slips according to claim 1 is characterized in that, described slip assemblies comprises slips body and dental lamina.

4. hydraulic pressure pipe slips according to claim 1 is characterized in that, described travel switch is the roller type travel switch.

5. hydraulic pressure pipe slips according to claim 1 is characterized in that, the top of described housing is provided with the top guide strip, and the bottom of housing is provided with the bottom guide ring.