CN216975143U

CN216975143U - Rodless oil extraction ground water injection pump

Info

Publication number: CN216975143U
Application number: CN202220516348.6U
Authority: CN
Inventors: 刘兵; 刘喜才; 王依明; 李自广; 徐校平; 马继增
Original assignee: Puyang Yuanheng Litong Petroleum Machinery Co ltd
Current assignee: Puyang Yuanheng Litong Petroleum Machinery Co ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-07-15
Anticipated expiration: 2032-03-10

Abstract

The utility model relates to the field of water injection pumps, in particular to a rodless oil extraction ground water injection pump. The bottom plate comprises a base plate, the bottom plate upper end right side is fixed with the pump body, be fixed with the baffle on the left bottom plate of the pump body, be fixed with the curb plate on the left bottom plate of baffle, set up the recess that corresponds with the piston rod of the pump body on the baffle, the cylinder body of pneumatic cylinder is located the recess, all be fixed with on the cylinder body of the pneumatic cylinder of the baffle left and right sides and keep off the ring, keep off ring and baffle contact, the telescopic link of pneumatic cylinder is towards the pump body, the pneumatic cylinder is concentric rather than the piston rod that corresponds, the telescopic link of pneumatic cylinder passes through the slips with rather than the piston rod that corresponds can dismantle fixed connection. According to the utility model, the hydraulic cylinder is used for replacing a power source of the crankshaft connecting rod mechanism, so that the service life can be prolonged, the structure is simple, the fault rate is low, the maintenance is convenient, the limitation of the radius of the crankshaft can be avoided, the ultra-long stroke of the plunger can be realized, and the discharge capacity of the water injection pump is increased.

Description

Rodless oil extraction ground water injection pump

Technical Field

The utility model relates to the field of water injection pumps, in particular to a rodless oil extraction ground water injection pump.

Background

When the oil field uses the rodless pump to produce oil, the power of the rodless pump comes from the water injection pump on the ground, and most of the common ground water injection pumps at present use a general reciprocating plunger pump driven by a power end with a crank-link mechanism. The general plunger pump has several problems: firstly, the power structure of the crank connecting rod mechanism is complex, and the manufacturing cost is high; secondly, the plunger has high stroke frequency, the sealing packing is quickly worn, the packing replacement frequency is high, and the maintenance period of the pump is short; thirdly, the pump locking condition such as blocking and the like often appears in the rodless pump in the oil well, and the pump pressure suddenly and rapidly rises, so that a crankshaft and a connecting rod at the power end of the ground water injection pump are damaged due to impact load, and great maintenance cost is generated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a rodless oil extraction ground water injection pump which has the advantages of prolonged service life, simple structure, low failure rate and convenient maintenance.

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

a rodless oil extraction ground water injection pump comprises a bottom plate, a pump body is fixed on the right side of the upper end of the bottom plate, a baffle plate is fixed on the bottom plate on the left side of the pump body, a side plate is fixed on the bottom plate on the left side of the baffle plate, a groove corresponding to a piston rod of the pump body is formed in the baffle plate, cylinder bodies of hydraulic cylinders are positioned in the groove, baffle rings are fixed on the cylinder bodies of the hydraulic cylinders on the left side and the right side of the baffle plate and are in contact with the baffle plate, telescopic rods of the hydraulic cylinders face the pump body, a chassis is fixed on the cylinder body of the hydraulic cylinder, the left end of the chassis tightly abuts against the right end of the side plate, inserting blocks are fixed on the front side and the rear side of the chassis, stop blocks are fixed on the right ends of the side plates on the front side and the rear side of the hydraulic cylinder, inserting blocks are inserted in the inserting grooves of the stop blocks on one side of the stop blocks on the front side and the rear side of the hydraulic cylinder, bolts penetrate through the side plates, the inserting blocks and the stop blocks are connected with nuts through threads on the bolts, and the hydraulic cylinders are concentric with the corresponding piston rods, the telescopic rod of pneumatic cylinder passes through the slips rather than the piston rod that corresponds and can dismantle fixed connection, and the slips lower extreme is fixed with the slide, and the slide slides and sets up on the bottom plate.

Specifically, the baffle plate is fixedly connected with the bottom plate through a plurality of rib plates.

Specifically, slide rails are fixed on bottom plates on the front side and the rear side of the slip, the length direction of each slide rail is parallel to the axial direction of the hydraulic cylinder, slide blocks are arranged on the slide rails in a sliding mode, and the slide blocks are fixedly connected with the slide plates.

Specifically, the hydraulic cylinder is communicated with the electric control reversing valve through a high-pressure oil pipe, the electric control reversing valve is communicated with the oil pump through a high-pressure oil pipe, the oil pump is driven by a motor, and the electric control reversing valve is electrically connected with the controller.

Specifically, the insert block is in contact with the groove wall of the groove where the insert block is located.

Compared with the prior art, the utility model has the beneficial effects that:

the hydraulic cylinder is used for replacing a power source of the crankshaft connecting rod mechanism, the service life can be prolonged, the structure is simple, the fault rate is low, the maintenance is convenient, the hydraulic cylinder is not limited by the radius of the crankshaft, the ultra-long stroke of the plunger can be realized, the discharge capacity of the water injection pump is increased, the stroke frequency of the plunger is reduced, the abrasion of a sealing packing is greatly reduced, the service life of the sealing packing is prolonged, when the pressure is increased rapidly due to the fact that the pump is blocked in a well, enough reaction time is reserved for a hydraulic power system due to the fact that the pump speed of the pump head is low, the safety protection system can react in time, the safety of the system is protected, and compared with the power source of the crankshaft connecting rod mechanism, the hydraulic cylinder drive has certain toughness, and overload damage is not prone to being caused.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view of the chassis.

Detailed Description

As shown in fig. 1-2, a rodless oil extraction ground water injection pump comprises a bottom plate 1, a pump body 5 is fixed on the right side of the upper end of the bottom plate 1, a baffle plate 2 is fixed on the bottom plate 1 on the left side of the pump body 5, the baffle plate 2 is fixedly connected with the bottom plate 1 through a plurality of rib plates 3, a side plate 21 is fixed on the bottom plate 1 on the left side of the baffle plate 2, a groove 4 corresponding to a piston rod 6 of the pump body 5 is formed in the baffle plate 2, a cylinder body of a hydraulic cylinder 20 is positioned in the groove 4, baffle rings 22 are fixed on the cylinder bodies of the hydraulic cylinders 20 on the left and right sides of the baffle plate 2, the baffle rings 22 are in contact with the baffle plate 2, a telescopic rod of the hydraulic cylinder 20 faces the pump body 5, a chassis 1 is fixed on the cylinder body of the hydraulic cylinder 20, the left end of the chassis 1 tightly abuts against the right end of the side plate 21, insert blocks 14 are fixed on the front and back sides of the chassis 1, stop blocks 11 are fixed on the right ends of the side plates 21 on the front and back sides of the hydraulic cylinder 20, slots 12 are formed on the stop blocks 11, the insert block 14 is inserted into the slot 12 of the stop block 11 on one side of the insert block 14, the insert block 14 contacts with the wall of the groove 4 where the insert block is located, bolts 15 are arranged on the front side and the rear side of the hydraulic cylinder 20, the bolts 15 penetrate through the side plates 21, the insert block 14 and the stop block 11, nuts are connected to the bolts 15 through threads, the hydraulic cylinder 20 is concentric with the corresponding piston rod 6, the telescopic rod of the hydraulic cylinder 20 is detachably and fixedly connected with the corresponding piston rod 6 through a slip 7, a sliding plate 8 is fixed to the lower end of the slip 7, the sliding plate 8 is arranged on the bottom plate 1 in a sliding mode, sliding rails 9 are fixed to the bottom plate 1 on the front side and the rear side of the slip 7, the length direction of the sliding rails 9 is parallel to the axial direction of the hydraulic cylinder 20, sliding blocks 10 are arranged on the sliding rails 9 in a sliding mode, and the sliding blocks 10 are fixedly connected with the sliding plates 8.

The hydraulic cylinder 20 is communicated with the electric control reversing valve 18 through a high-pressure oil pipe, the electric control reversing valve 18 is communicated with the oil pump 17 through a high-pressure oil pipe, the oil pump 17 is driven by the motor 16, and the electric control reversing valve 18 is electrically connected with the controller 19.

When the hydraulic cylinder is used, the motor 16 drives the oil pump 17 to work to generate high-pressure oil which is conveyed into the hydraulic cylinder 20 through the electric control reversing valve 18 and the high-pressure oil pipe, the controller 19 controls the electric control reversing valve 18 to reverse, so that the telescopic rod and the piston rod 6 of the hydraulic cylinder 20 reciprocate, when the piston rod 6 moves leftwards, the suction valve of the pump body 5 is opened, the discharge valve is closed, and liquid is sucked; when the piston rod 6 moves rightwards, the suction valve in the pump body 5 is closed, the discharge valve is opened, and the generated high-pressure liquid is discharged out of the pump body 5; the operation is repeated in this way, and the low-pressure liquid is continuously sucked and the high-pressure liquid is discharged, so that the operation function of the water injection pump is realized. When the telescopic rods of the piston rod 6 and the hydraulic cylinder 20 reciprocate, the sliding plate 8 can play a role in guiding and stabilizing the telescopic rods of the hydraulic cylinder 20 and the piston rod 6 through the matching of the sliding block 10 and the sliding rail 9, and the service lives of the pump body 5 and the hydraulic cylinder 20 can be prolonged. When the hydraulic cylinder 20 needs to be maintained, the nut on the bolt 15 is detached, the bolt 15 is taken down, the hydraulic cylinder 20 can be taken down from the bottom plate 1 after the slips 7 are loosened, and maintenance is convenient.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A rodless oil extraction ground water injection pump comprises a bottom plate, a pump body is fixed on the right side of the upper end of the bottom plate, a baffle plate is fixed on the bottom plate on the left side of the pump body, and a side plate is fixed on the bottom plate on the left side of the baffle plate, and is characterized in that a groove corresponding to a piston rod of the pump body is formed in the baffle plate, a cylinder body of a hydraulic cylinder is positioned in the groove, baffle rings are fixed on the cylinder bodies of the hydraulic cylinders on the left side and the right side of the baffle plate and are in contact with the baffle plate, a telescopic rod of the hydraulic cylinder faces towards the pump body, a chassis is fixed on the cylinder body of the hydraulic cylinder, the left end of the chassis tightly supports against the right end of the side plate, insertion blocks are fixed on the front side and the rear side of the chassis, stop blocks are fixed on the right ends of the side plates on the front side and the rear side of the hydraulic cylinder, slots are formed in the stop blocks on the front side and the rear side of the hydraulic cylinder, bolts penetrate through the side plates, the insertion blocks and are in threaded connection with nuts, the hydraulic cylinder is concentric with the corresponding piston rod, the telescopic rod of the hydraulic cylinder is detachably and fixedly connected with the corresponding piston rod through the slip, the lower end of the slip is fixed with the sliding plate, and the sliding plate is arranged on the bottom plate in a sliding mode.

2. The rodless oil recovery surface water injection pump according to claim 1, wherein the baffle is fixedly connected with the bottom plate through a plurality of rib plates.

3. The rodless oil recovery ground water injection pump according to claim 1, wherein slide rails are fixed to bottom plates on the front and rear sides of the slip, the length direction of each slide rail is parallel to the axial direction of the hydraulic cylinder, slide blocks are slidably arranged on the slide rails, and the slide blocks are fixedly connected with the slide plates.

4. The rodless oil recovery ground water injection pump according to claim 1, wherein the hydraulic cylinder is communicated with the electrically controlled directional valve through a high pressure oil pipe, the electrically controlled directional valve is communicated with the oil pump through a high pressure oil pipe, the oil pump is driven by a motor, and the electrically controlled directional valve is electrically connected with the controller.

5. The rodless production surface injection pump of claim 1, wherein the insert contacts the wall of the groove in which it is located.