CN2667144Y - Long-distance controlling pneumatic spider for well repairing operation - Google Patents

Abstract

The utility model relates to a long-distance controlling pneumatic chuck for well repairing operation, which consists of a casing 20, a chuck door 1, a door latch 2, a chucking tooth 3, a blocking pin 4, an auxiliary slip 5, a slip pin 6, torsion spring 7, a power slip 8, a pressure cap 9, an electromagnetic valve 10, a pipeline 11, a foot switch 12, a receiving device 13, a cable line 14, a plunger rod 15, a sealing pressure cover 16, a plunger 17, a cylinder 18 and a remote controller 19. The device can be used for replacing the currently used manual chuck. The utility model can reduce the labor intensity of wellhead operation worker, facilitate the safe production of the well repairing and achievement of the automation of the operation process, and has easy application.

Description

Workover treatment remote control pneumatic chuck

Technical field:

The utility model relates to a kind of control head that is used for the oil well repairing operation process.

Background technology:

At present, the on-the-spot well head chuck that uses of workover treatment takes to control manually the switch of slips, rise, in the lower tubular column process, the well head operator need make to move away the chuck inner conical surface on the slips with the subordinate chuck handle of pressing, and is in maximum open position.When needs block tubing string, carry the chuck handle on rapidly, make slips be seated in the housing inner conical surface, the stuck tubing string outer wall of card tooth.Repeat above operation, just can finish that single elevator rises, the lower tubular column operation.In the case, because workover treatment well head working strength of workers is big, operation well head chuck has been finished the lower tubular column operation near also must standing in to spiritual high concentration well head, and well head is in the below of big load traveling system, the thing in case drop, cause personal injury accidents easily, cause very big threat to safety in production.

Summary of the invention:

The purpose of this utility model is to provide a kind of replacement to control manually, can realize that thereby remote control can alleviate the workover treatment remote control pneumatic chuck of well head operation labour intensity, assurance safety in production.

The utility model is achieved in that this kind chuck comprises chuck main body, slips assembly, cylinder assembly, control assembly four parts, and wherein, chuck main body is made up of chuck door, door bolt, housing; The slips assembly is by auxiliary slips, and power slip, card tooth, slips pin, backing pin, torsion spring are formed; Cylinder assembly is made up of pressure cap, plunger rod, plunger, sealing ring, cylinder barrel; The control assembly is by solenoid operated directional valve, form by receiving apparatus, remote controller, foot switch, tracheae line, cable.When installing first, chuck main body, slips assembly and cylinder assembly assembling are placed near the well head; Electromagnetic valve and receiving system are installed in correct position on the workover rig, and foot switch places under the left foot of operator, and remote controller is given the well head operator; Connect the import of gas supply line from the source of the gas of workover rig, connect the two bar tracheae lines of air spider to electromagnetic valve with snap joint to electromagnetic valve; Be wired to receiving system with cable from the workover rig storage battery, with private cable receiving system and electromagnetic valve device and foot switch connected again, install first this moment and finish.Only need load and unload two snap joints that are connected with chuck during following subjob, finish gas circuit and can guarantee being connected of chuck and use.When removing oil pipe, whole air spider is sat be placed on the well head earlier, connect two tracheae lines after, open air-supplying valve, the operator in the driver's cabin can pass through foot switch, controls the switch motion of air spider.When depressing foot rest, gas enters from the cylinder bottom outlet, discharges from the top pore, promotes piston stroking upward, drives up the opening of slips assembly, guarantees that tubing string normally passes through; When arrival needs stuck tubing string position, lift foot switch rapidly and change airintake direction, make gas from the pore air inlet of cylinder barrel top, the lower air holes exhaust, promote descent of piston, and driving the inner conical surface that the slips assembly is seated in the chuck housing rapidly, slip insert is held the tubing string outer wall tightly, makes it be stuck in the appropriate location.Repeat above operating process, can realize normal rountrip.As using a teleswitch at well head control chuck, only need to change receiving system gauge tap direction, can realize the well head remote control.

The utility model can be used for substituting the hand chuck that adopts at present, utilizes it can alleviate the shaft mouth operation working strength of workers, helps the workover treatment safety in production and realizes the operation process automation, is suitable for and applies.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.Fig. 2 is the vertical view of chuck main body.

The specific embodiment: enforcement of the present utility model is described further below in conjunction with accompanying drawing.

As shown in the figure, the utility model is made up of chuck door 1, door bolt 2, card tooth 3, backing pin 4, auxiliary slips 5, slips pin 6, torsion spring 7, power slip 8, pressure cap 9, electromagnetic valve 10, tracheae line 11, foot switch 12, receiving system 13, cable 14, plunger rod 15, gland 16, plunger 17, cylinder barrel 18, remote controller 19, housing 20, its structure assembled relation is as follows: housing 20 1 sides have chuck door 1, and chuck door 1 two ends adopt door bolt 2 to connect; Housing 20 internal upper parts are provided with auxiliary slips 5 and power slip 8, are connected and fixed with slips pin 6 therebetween, and the below is provided with torsion spring 7, on the dovetail groove of auxiliary slips 5 card tooth 3 are housed, and fixing with backing pin 4; Power slip 8 is curved penetrating plunger rod 15 in the circular hole at position (hanging ring), its top fixes with pressure cap 9 and power slip 8, and plunger 17 is equipped with in the lower end, and plunger rod 15 and plunger 17 stretch in the cylinder barrel 18, and can do upper and lower displacement, cylinder barrel 18 upper ends are provided with gland 16; The inlet and outlet hole of cylinder barrel 18 upper and lower parts is connected with tracheae line 11 respectively, and tracheae line 11 is provided with electromagnetic valve 10; Electromagnetic valve 10 links to each other with receiving system 13 by cable 14, and receiving system 13 links to each other with foot switch 12 by cable 14; Remote controller 19 is hand-held by the well head operative employee, by its control receiving system 13, remote control well head air spider then.Wherein, housing 20 is the hollow disc body of a high 350mm, and its periphery upper and lower part is cast with the holder of diameter 400mm, thick 40mm, the middle part is the conical surface, endoporus is up big and down small inverted cone surface, and the bottom is the positive conical surface, and a side has the chuck door of wide 120mm from top to bottom.The valve that chuck door 1 connects with door bolt 2 for two ends.Auxiliary slips 5 peripheries are the circular arc conical surface, and inside is processed with dovetail groove.The power slip 8 tops curved position is provided with that be rectangular in shape is used for the hanging ring that is connected with plunger rod 15, moves to drive auxiliary slips, and substructure is identical with auxiliary slips 5.Card tooth 3 materials are the 35CrMn steel, and the zigzag card tooth sheet of three kinds of specifications is arranged for long 75mm, wide 30mm, thickness.Cylinder barrel 18 long 140mm, internal diameter 45mm is smooth straight tube.Plunger 17 is the cylinder piston of diameter 45mm, long 40mm, surface band groove.Other part all adopts standard component.

Claims (1)

1, a kind of workover treatment remote control pneumatic chuck, form by chuck door (1), door bolt (2), card tooth (3), slips pin (6), power slip (8), housing (20), it is characterized in that: housing (20) one sides have chuck door (1), and chuck door (1) two ends adopt door bolt (2) to connect; Housing (20) internal upper part is provided with auxiliary slips (5) and power slip (8), is connected and fixed with slips pin (6) therebetween, and the below is provided with torsion spring (7), on the dovetail groove of auxiliary slips (5) card tooth (3) is housed, and fixing with backing pin (4); Power slip (8) is curved penetrating plunger rod (15) in the circular hole at position, its top fixes with pressure cap (9) and power slip (8), plunger (17) is equipped with in the lower end, plunger rod (15) and plunger (17) stretch in the cylinder barrel (18), and can do upper and lower displacement, cylinder barrel (18) upper end is provided with gland (16); The inlet and outlet hole of cylinder barrel (18) upper and lower part is connected with tracheae line (11) respectively, and tracheae line (11) is provided with electromagnetic valve (10); Electromagnetic valve (10) links to each other with receiving system (13) by cable (14), and receiving system (13) links to each other with foot switch (12) by cable (14); Remote controller (19) is hand-held by the well head operative employee.