CN217421114U

CN217421114U - Large four-way assembly for conical screw pump

Info

Publication number: CN217421114U
Application number: CN202220795261.7U
Authority: CN
Inventors: 孙欣; 李之涵; 周世杰; 顾威; 孙高越
Original assignee: Wuxi Hengxin Beishi Technology Co Ltd
Current assignee: Wuxi Hengxin Beishi Technology Co Ltd
Priority date: 2022-04-08
Filing date: 2022-04-08
Publication date: 2022-09-13
Anticipated expiration: 2032-04-08

Abstract

The utility model provides a large four-way component for a conical screw pump, which has simple structure and convenient assembly, can centralize a polished rod, correct the offset between the polished rod and the large four-way and prevent the packing from leaking oil, which comprises a large four-way body, a sealing element is inserted in an upper end connecting pipe of the large four-way body, a first step surface is arranged in an inner hole of the sealing element, a first ball bearing is arranged above the first step surface, a gasket is arranged above the first ball bearing, a packing is arranged above the washer, a jackscrew is arranged above the packing, the lower end of the jackscrew is fixedly connected with the upper end of the sealing element through an outer nut, the upper end of the jackscrew is inserted with a corrector, the inner hole of the corrector is provided with a second step surface, and a second ball bearing is arranged above the second step surface, and a bearing gland is arranged above the second ball bearing.

Description

Large four-way assembly for conical screw pump

Technical Field

The utility model relates to a screw pump correlation technique field, concretely relates to big cross subassembly for conical screw pump.

Background

The four-way pipe of the screw pump oil extraction well head plays a role in bearing up and down, the upper end and the lower end of the four-way pipe are used for connecting the well pipe with the oil extraction equipment, and the left end and the right end of the four-way pipe are used for oil outlet and gas injection. The sealing structure of the four-way pipe is in sealing fit with the polish rod, and crude oil or high-temperature and high-pressure gas is prevented from leaking from the upper end opening of the four-way pipe. In the actual use process, the polished rod generates eccentric wear after being installed due to the fact that the well seat is not in the right position, and the packing is prone to oil leakage. At the moment, if the packing nut is tightened too tightly, the problems of overlarge torque, high energy consumption and large noise can be caused.

Therefore, there is a need to design a new type of large four-way assembly to correct the offset between the polish rod and the large four-way to prevent the oil leakage of the packing.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems mentioned in the above, the utility model provides a big cross assembly for conical screw pump, its simple structure, the equipment of being convenient for can right the polished rod, correct the skew between polished rod and the big cross, prevent the packing oil leak.

The technical scheme is as follows:

the utility model provides a big cross subassembly for conical screw pump, its includes big cross body, the intraductal cartridge of upper end termination of big cross body has the sealing member, be provided with first step face in the hole of sealing member, first ball bearing is installed to first step face top, the packing ring is installed to first ball bearing top, the packing is installed to the packing ring top, the jackscrew lower extreme passes through outer nut and sealing member upper end fixed connection, jackscrew upper end cartridge has the unscrambler, be provided with the second step face in the hole of unscrambler, second ball bearing is installed to second step face top, bearing gland is installed to second ball bearing top.

Furthermore, the outside of the upper end connecting pipe of the large four-way body is provided with a first flange plate, the outside of the middle part of the sealing element is provided with a second flange plate, the second flange plate is fixed with the first flange plate through bolts, and a sealing steel ring is arranged between the second flange plate and the first flange plate.

Furthermore, the inner side wall of the upper end pipe of the large four-way body is a conical surface, threads are arranged on the conical surface, the outer side wall of the sealing element is a conical surface below the second flange plate, the conical surface is also provided with threads, and the upper end pipe of the large four-way body is in threaded connection with the sealing element.

Further, first step face is recessed, first ball bearing includes bearing body and drive ring, bearing body lower part sets up in the spill down, bearing body upper portion sliding connection drive ring, the drive ring links to each other with the polished rod.

The utility model has the advantages that:

when the large four-way assembly is used, the polished rod sequentially penetrates through the bearing gland, the second ball bearing, the corrector, the jackscrew, the packing, the gasket, the first ball bearing and the sealing piece, the polished rod is centered by the upper ball bearing and the lower ball bearing, the offset between the polished rod and the large four-way is corrected, the packing is prevented from leaking oil, and the large four-way assembly is simple in structure and convenient to install; simultaneously with first step face setting for spill down, set up first ball bearing and include bearing body and driving ring, the lower part of bearing body sets up in spill down, bearing body upper portion sliding connection driving ring, driving ring link to each other with the polished rod again, even so the ball damage can not scatter and fall to big cross in, cause the damage of other parts yet.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of a first ball bearing of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples.

The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. The condition in the embodiment can be further adjusted according to concrete condition the utility model discloses a it is right under the design prerequisite the utility model discloses a simple improvement of method all belongs to the utility model discloses the scope of claiming.

Referring to fig. 1-2, a large cross-piece assembly for a conical screw pump comprises a large cross-piece body 1, a sealing element 2 is inserted into an upper end connecting pipe of the large cross-piece body 1, a first step surface 3 is arranged in an inner hole of the sealing element 2, a first ball bearing 4 is arranged above the first step surface 3, a gasket 5 is arranged above the first ball bearing 4, a packing 6 is arranged above the gasket 5, a jackscrew 7 is arranged above the packing 6, the lower end of the jackscrew 7 is fixedly connected with the upper end of the sealing element 2 through an outer nut 8, a corrector 9 is inserted at the upper end of the jackscrew 7, a second step surface 10 is arranged in an inner hole of the corrector 9, a second ball bearing 11 is arranged above the second step surface 10, and a bearing gland 12 is arranged above the second ball bearing 11. The polish rod 13 sequentially penetrates through the bearing gland 12, the second ball bearing 11, the corrector 9, the jackscrew 7, the packing 6, the washer 5, the first ball bearing 4 and the sealing element 2, the polish rod 13 is righted through the upper ball bearing and the lower ball bearing, the deviation between the polish rod 13 and the large cross joint is corrected, and the packing is prevented from leaking oil.

The outer side of the upper end connecting pipe of the large four-way body 1 is provided with a first flange plate 14, the outer side of the middle part of the sealing element 2 is provided with a second flange plate 15, the second flange plate 15 and the first flange plate 14 are fixed through bolts, a sealing steel ring 16 is arranged between the second flange plate 15 and the first flange plate 14, and the sealing performance is improved. The inner side wall of the upper end connecting pipe of the large four-way body 1 is a conical surface, threads are arranged on the conical surface, the outer side wall of the sealing element 2 is a conical surface below the second flange plate, the conical surface is also provided with threads, and the upper end connecting pipe of the large four-way body 1 is connected with the sealing element 2 through the threads, so that the sealing performance is further improved.

The first step surface 3 is a lower concave shape, the first ball bearing 4 comprises a bearing body 41 and a transmission ring 42, the lower part of the bearing body 41 is arranged in the lower concave shape, the upper part of the bearing body 41 is connected with the transmission ring 42 in a sliding manner, and the transmission ring 42 is connected with the polished rod 13. The structure ensures that the balls cannot be scattered in the large cross joint after being damaged, thereby causing the damage of other parts.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a big cross subassembly for conical screw pump, its includes big cross body, the intraductal cartridge of upper end termination of big cross body has the sealing member, be provided with first step face in the hole of sealing member, first ball bearing is installed to first step face top, the packing ring is installed to first ball bearing top, the packing is installed to the packing ring top, the jackscrew lower extreme passes through outer nut and sealing member upper end fixed connection, jackscrew upper end cartridge has the unscrambler, be provided with second step face in the hole of unscrambler, second ball bearing is installed to second step face top, bearing cover is installed to second ball bearing top.

2. The large four-way assembly for a tapered screw pump according to claim 1, wherein: the outer side of the upper end connecting pipe of the large four-way body is provided with a first flange plate, the outer side of the middle part of the sealing element is provided with a second flange plate, the second flange plate is fixed with the first flange plate through bolts, and a sealing steel ring is arranged between the second flange plate and the first flange plate.

3. The large four-way assembly for a conical screw pump according to claim 2, wherein: the inner side wall of the upper end pipe of the large four-way body is a conical surface, threads are arranged on the conical surface, the outer side wall of the sealing element is a conical surface below the second flange plate, the conical surface is also provided with threads, and the upper end pipe of the large four-way body is in threaded connection with the sealing element.

4. The large four-way assembly for a tapered screw pump according to claim 1, wherein: the first step surface is concave, the first ball bearing comprises a bearing body and a transmission ring, the lower portion of the bearing body is arranged in the concave, the upper portion of the bearing body is connected with the transmission ring in a sliding mode, and the transmission ring is connected with the polish rod.