CN2457329Y

CN2457329Y - Multifunction polish rod sealing device

Info

Publication number: CN2457329Y
Application number: CN 00258622
Authority: CN
Inventors: 廖启新
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-10-12
Filing date: 2000-10-12
Publication date: 2001-10-31
Anticipated expiration: 2010-10-12

Abstract

The utility model relates to a multifunctional polished-rod sealing device which is a necessary device for oil production in petroleum industry and primarily solves the problems of complex operation, difficulty maintenance, crude oil easily stolen. A three-jaw sealing mechanism is composed of angular wheels, a spiral groove, three jaws, sealing element, etc., in order to seal the polished rod when a packing is replaced. A separate packing box provides convenience for picking out an old packing and filling a new packing. An inside-hidden packing pressing nut can only be provided or dismounted with special tools to prevent oil being stolen. The upper part of the pressing nut is provided with a broaching tool to remove burrs of the broken polished rod in time, in order to avoid scratching filler.

Description

Multifunctional polish rod sealing device

The utility model relates to polished rod (also the claiming sucker rod) sealing device in the oil recovery machiner of a kind of oil field.

Present known polished rod sealer is oil field a kind of old-fashioned structure (see figure 1) used for a long time, and its bottom is the rubber valve, and top is packing (filler) box.The former effect is when changing packing after the oil pumper stop pumping, to close the rubber valve, prevents the crude oil ejection; The latter's effect is after compressing packing, and the rubber valve open guarantees that sucker rod does not leak, not oil spout when work.This product will carry out during operation step by step because structure is owed rationally, and elder generation is on one side tight, tight again another side, and sucker rod is easily inclined to one side by the top, even bending.The both sides handwheel outside also can't be antitheft simultaneously.Also have packing box also easily to be unscrewed by robber's dismounting, sucker rod is pounded hair, pulls packing, thereby steals crude oil.Moreover, also have a significant defective, bit by bit scratch when the worker that recovers the oil exactly changes packing that to remove old packing very difficult in the packing box deep hole, it is time-consuming to require great effort, and this work becomes one of operation of difficulty maximum in the oil recovery workman practical operation for many years.

Purpose of the present invention, overcome the above-mentioned defective of existing polished rod sealer exactly, design a kind of Multifunction polished rod sealer that can apply, prolong the application life of product, improve the functional performance of product, increase reliability of products, guarantee the practicality of product, make it reach safety, reliable, lasting, efficient.

The technical solution of the utility model is achieved in that at first improves design to the rubber valve, originally the rubber valve is fastened to reach by rotation both sides handwheel and is closed and seal sucker rod, defective as previously mentioned, and the utility model polished rod sealer is to adopt three-jaw self centering seal mechanism (see figure 2), this mechanism is similar to the lathe scroll chuck, it is to be that the angular wheel other end is that special-purpose spanner square hole 10 and one side are that the angular wheel another side is the helicla flute 11 of similar mosquito-repellent incense by an end, and formation such as three-jaw 13, and at the bottom and the top embedding riveting oil-proof rubber of three-jaw, with increase " o " type rubber ring 9 and 16 outside angular wheel and three-jaw, in case from then on crude oil leak.This structure is as long as one can operate special-purpose spanner, its operating principle is as follows: clockwise rotate angular wheel 10 can drive the one side be angular wheel, another side is helicla flute 11 rotation, radially moves sucker rod is held tightly thereby drive 3 three-jaws 13, reaches self-centering and sealing; Inhour is rotated special-purpose spanner, and three-jaw is about to sucker rod to be loosened, and recovers the oil pumping duty.Next is that packing box is improved design, existing packing box is whole deep hole formula, taking with the filling of new packing of useless packing is very difficult, packing box after the improvement is split type (see figure 3), and the packing box that is about to be similar to the teacup shape is cut open along its bus and the flat stone of axis, and it is divided into two, with special hinge the two halves packing box is connected from the bottom then, can make the good Zhang Haohe of both sides packing box like this, when changing old packing, open with two and to unload screw packing box is taken out from the packing box body.Again the both sides packing box is broken into two with one's hands to both sides, packing box just opens wide to both sides along hinge axis, so old packing all reveals, can divest old packing with hand this moment, when filling new packing as long as after new packing loaded onto sucker rod, the split packing box is closed up again and put into the packing box body and get final product, so operation is very easy.Moreover the packing box clamp nut designed, former robber steals crude oil also to be had and packing box is compressed mother Luo unscrews with pipe tongs or spanner, then packing is drawn bad, such crude oil to leak out.At this kind situation, change the packing box clamp nut into built-in (see figure 4) by external, the internal thread that is about to clamp nut is designed to external screw thread, the external screw thread on packing body top is designed to internal thread, like this, with special tool (seeing Fig. 5,6) clamp nut is screwed in the packing body, keeps one's own counsel, other general utility tool can't be dismantled.Also have; some robber steals the way that crude oil directly takes to pound sucker rod; promptly when oil pumper is worked, sucker rod is pounded hair with blunt; the sucker rod of being pounded hair pumps under the effect of oil pumper; just in time packing is all pulled into flute from top to bottom; thereby crude oil is flowed out along groove; at this kind situation; design a kind of simple and easy broaching tool (see figure 7); this broaching tool interference press fit over filler and compresses the female top of Luo; when the sucker rod of being pounded hair moves downwards; during by broaching tool; institute is jagged all to be pulled off by broaching tool, thereby has avoided the direct scuffing of burr to packing, reaches the self-protection function.

Adopt technique scheme, can operate easily, self-centering, sealing is reliable, and it is extremely easy to change packing, reaches reliable anti-theft feature simultaneously, has prolonged the application life of oil production equipment widely, and sample reaches design effect fully through on probation.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is existing known polished rod sealer structure chart;

Fig. 2 is the utility model multifunctional polish rod sealing device structure chart;

Fig. 3 is a split packing box part drawing;

Fig. 4 is a packing box clamp nut part drawing;

Fig. 5, the 6th, the special tool of clamp nut and three-jaw anchor clamps.

In Fig. 2: 1. broaching tool 2. filler clamp nuts 3. matrix packing rings 4. split type packing boxs

Packing (filler) 6. hold concurrently special-purpose spanner square hole 11. angular wheels and helicla flute 12. of packing box body 7. hinges 8. oil-resistant rubber insert 9. " o " type circles 10. angular wheels silently cover 13. three-jaws, 14. oil-resistant rubber slabs, 15. three-jaw clamp body 16. " o " type circles, 17. thimble connectors, 18. polished rods.

In embodiment illustrated in fig. 2, the polished rod sealer bottom is a thimble connector 17, connects with clip with production tree.The middle part is the three-jaw clamp mechanism, is similar to lathe three-jaw anchor clamps, and angular wheel 10 has three, and is uniform by 120 °, is assemblied on the housing 9, holds the top to be processed with square hole greatly, is beneficial to the square plate child-operation.Angular wheel and helicla flute 11, it be one discoid, be that angular wheel and part 10 match above, be that the helicla flute and the three-jaw 13 of coiled mosquito-repellent incense shape matches below.Rotation conic gear 10 promptly drives part 11 and rotates vertically, owing to be helicla flute below, does the radial expansion motion so just drive three-jaw 13, thereby polished rod 18 is sealed and loosens.The middle part is a split packing box 4 on the three-jaw anchor clamps, sees Fig. 3 for details, and it is cut open along packing box bus and axis plane, and special hinge is set in its underpart again, and therefore, box body can separate to both sides around hinge axis.On the top of split packing box is that built-in filler compresses mother Luo 2, sees Fig. 4 for details, and it is unloaded the available dedicated instrument by installation and dismantling such as Fig. 5, Fig. 6 carry out.Be press-fitted broaching tool 1 in the interference of the top of filler clamp nut 2, the burr that polished rod causes is for some reason done to remove automatically.

Claims

1. multifunctional polish rod sealing device, in its housing, three-jaw automatically centering fixture, split type packing box, filler clamp nut, broaching tool are linked in sequence, it is characterized in that: three-jaw automatically centering fixture bottom is connected with thimble connector, top is split type packing box, the top of split type packing box compresses mother Luo with filler and tightens, and is press-fitted a broaching tool at filler clamp nut top.

2. according to the described multifunctional polish rod sealing device of claim 1, it is characterized in that: the three-jaw automatically centering fixture is to be made of angular wheel, angular wheel and helicla flute, three-jaw, seal.

3. according to the described multifunctional polish rod sealing device of claim 1, it is characterized in that: split type packing box is the two halves of cutting open along its bus and axis plane, and the bottom links to each other with special hinge, and the operation fashion moves up and down, and is convenient to separate to both sides.

4. according to the described multifunctional polish rod sealing device of claim 1, it is characterized in that: the filler clamp nut is interior root of Dahurian angelica formula, and assembles a broaching tool in the top interference.