CN202100431U - Underground automatic reciprocating fluid plunger pump with large discharging volume - Google Patents
Underground automatic reciprocating fluid plunger pump with large discharging volume Download PDFInfo
- Publication number
- CN202100431U CN202100431U CN2011201964504U CN201120196450U CN202100431U CN 202100431 U CN202100431 U CN 202100431U CN 2011201964504 U CN2011201964504 U CN 2011201964504U CN 201120196450 U CN201120196450 U CN 201120196450U CN 202100431 U CN202100431 U CN 202100431U
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Abstract
The utility model provides an underground automatic reciprocating fluid plunger pump with large discharging volume, which comprises a hydraulic cylinder and two fluid cylinders, wherein a middle connector is fixedly arranged in the hydraulic cylinder, and the fluid cylinders are symmetrically arranged at two ends of the hydraulic cylinder in connecting mode. Sliding plungers are arranged between the fluid cylinders and the hydraulic cylinder, and the effective areas of the plungers in the fluid cylinders are larger than those of the plungers in the hydraulic cylinder. The two fluid cylinders with the same diameter are symmetrically arranged on two sides of the hydraulic cylinder, under the effect of hydraulic pressure, the plungers move forward or retract, one fluid cylinder draws fluid all the time, the other fluid cylinder discharges the fluid, and the two fluid cylinders work in reciprocating switch mode. In addition, the effective areas of the hydraulic cylinder are smaller than those of the fluid cylinders, thereby obtaining larger fluid flow with small hydraulic flow. Furthermore, due to the fact that the fluid cylinders have the same diameter, when the plunger pump changes direction, fluid drawn-in velocity does not have big fluctuation, therefore the wall of a well can not collapse and the like, and the speed uniformity during liquid discharging process is guaranteed.
Description
Technical field
The utility model relates to the automatic reciprocating big discharge capacity fluid plunger pump in a kind of down-hole.
Background technique
In the cable formation testing operation, before sampling, need utilize the fluid plunger pump to carry out long discharge opeing (fitness for purpose discharge opeing 20L and more than) eliminating the influence of invaded zone, thereby obtain the original-pack fluid sample in stratum.Existing fluid plunger pump displacement is less, and also below 500ml/min, accomplish the 20L discharge opeing needs 40min to big discharge capacity at least.Instrument remains static during discharge opeing, and cable is tightened for a long time, is easy to generate the absorption card, directly influences job safety.In addition, utilizing formation tester to be mini-DST (mini drill stem testing), twin packer at first packing reaches 36 liters of drilling mud fluids, utilizes existing this part liquid of fluid plunger pump emptying just to need 72min, and pump efficiency is low excessively, has also brought great operating risk.
The model utility content
The technical problem that the utility model will solve provides the automatic reciprocating big discharge capacity fluid plunger pump in the high down-hole of a kind of safe and reliable pump efficiency.
In order to address the above problem, the utility model provides a kind of down-hole automatic reciprocating big discharge capacity fluid plunger pump, comprising:
Oil hydraulic cylinder, said oil hydraulic cylinder internal fixation is provided with transition joint;
Fluid cylinder, said fluid cylinder quantity is 2, symmetry connects and to be arranged on said oil hydraulic cylinder two ends, is provided with sliding piston between said fluid cylinder and the oil hydraulic cylinder, said piston at the useful area of fluid cylinder greater than useful area at oil hydraulic cylinder.
Further, said piston is provided with magnet, and said fluid cylinder two ends are provided with corresponding said magnet and are used for the auto reversive Hall transducer of said piston.
Further, be connected with rubber ring on the said magnet, said magnet also is sleeved in the soft cover.
Further, be connected with Rapid-turning nut in the said transition joint.
Further, said fluid cylinder two ends also are provided with the screw thread ejector pin.
The utlity model has following advantage:
1, the utility model is provided with two isodiametric fluid cylinders in the oil hydraulic cylinder bilateral symmetry, under action of hydraulic force, and piston-advance or when retreating; All the time there is a fluid cylinder sucking fluid; Another back and forth switches, in addition discharging fluid; The effective piston area of oil hydraulic cylinder is less than the effective piston area of fluid cylinder, thereby hydraulic flow that can be less obtains bigger fluid flow.Because fluid cylinder is isodiametric, after the plunger pump switching-over, can suck the big fluctuation of fluid rate, thereby phenomenons such as the borehole wall collapses can not occur again, guarantee the at the uniform velocity property in the discharge opeing process.
2, it is reliable that the utility model is simple in structure, pump is taken out process stabilization, and the utility model high working efficiency can significantly reduce drain time, produces the risk of fault when reducing discharge opeing.
Description of drawings
Be described further below in conjunction with the mode of execution of accompanying drawing the utility model:
Fig. 1 shows the automatic reciprocating big discharge capacity fluid plunger pump structure schematic representation in a kind of down-hole of the utility model.
Embodiment
As shown in Figure 1, the utility model comprises oil hydraulic cylinder 1 and fluid cylinder 2.Wherein, oil hydraulic cylinder 1 is used to realize piston 3 reciprocating actions, and power is provided; Fluid cylinder 2 is used for extracting and discharging fluid, realizes functions such as discharge opeing.
Oil hydraulic cylinder 1 internal fixation is provided with transition joint 4, and transition joint 4 is connected to form.Oil hydraulic cylinder 1 is communicated with hydraulic pipe line, and through the oil hydraulic pump fuel feeding, realizes that piston 3 slides.
The utility model is provided with two isodiametric fluid cylinders 2 in oil hydraulic cylinder 1 bilateral symmetry, and under action of hydraulic force, piston 3 advances or when retreating; All the time there is a fluid cylinder 2 sucking fluid; Another back and forth switches, in addition discharging fluid; Oil hydraulic cylinder 1 effective piston 3 areas are less than fluid cylinder 2 effective piston 3 areas, thereby hydraulic flow that can be less obtains bigger fluid flow.Because fluid cylinder 2 is isodiametric, after the plunger pump switching-over, can suck the big fluctuation of fluid rate, thereby phenomenons such as the borehole wall collapses can not occur again, guarantee the at the uniform velocity property in the discharge opeing process.
In the utility model, piston 3 is provided with magnet 6, and fluid cylinder 2 two ends are provided with corresponding magnet 6 and are used for piston 3 auto reversive Hall transducers 7.The magnet 6 of high Surface field intensity is housed on piston 3, high-temperature Hall sensor 7 is housed at fluid cylinder 2 cylinder tails.When piston 3 moved to the cylinder tail, magnetic intensity that Hall transducer 7 receives arrived threshold value, showed that piston 3 motions take the lead, and trigger signal is accomplished the switching-over campaign of piston 3.Through the size of adjustment threshold value, can move to just switching-over when certain interval being arranged at piston 3 apart from fluid cylinder 2 cylinder tails, saved the process of plunger pump pressure release, can realize fast automatic switching-over.In addition, also be provided with fluid pressure sensor 8 at fluid cylinder 2 two ends, when Hall transducer 7 lost efficacy, the pressure signal that records of fluid pressure sensor 8 capable of using need to judge whether switching-over, has realized dual fail-safe automatic reverse.
In the utility model, be connected with rubber ring 9 on the magnet 6, magnet 6 also is sleeved in the soft cover 10.Magnet 6 belongs to more crisp material, in piston 3 to-and-fro motion processes, constantly has impact, and it is broken to cause magnet 6 to collapse.Magnet 6 is packed in the peek cover (soft cover 10), and rubber buffer ring 9 is housed endways, both can fixed magnet 6, also can effectively absorb impact, protection magnet 6.
In the utility model, be connected with Rapid-turning nut 11 in the transition joint 4.A Rapid-turning nut 11 is housed in transition joint 4, and the plunger pump the other end can be free movable around axis, thereby can adjust this end attitude, guarantees that two attachment faces of plunger pump are at same horizontal plane.Leave adjusting play, the 1mm left and right sides at Rapid-turning nut 11 and transition joint 4 end faces, the position degree when guaranteeing to install.
In the utility model, fluid cylinder 2 two ends also are provided with screw thread ejector pin 12.Under plunger pump builds the pressure situation, can directly act on the multicore connector assembly 13 and the connecting tube 14 at fluid cylinder 2 two ends in the axial force of ton, damage connector assembly 13 and connecting tube 14 easily, even cause seal failure.For eliminating axial force, 2 screw thread ejector pins 12 respectively are equipped with at fluid cylinder 2 two ends, directly withstand on the instrument matrix end face, and axial force just is delivered to the instrument matrix through screw thread ejector pin 12 like this, has effectively eliminated the influence of axial force for plunger pump.
It is reliable that the utility model is simple in structure, pump is taken out process stabilization, and the utility model high working efficiency can significantly reduce drain time, produces the risk of fault when reducing discharge opeing.
In sum; More than be merely the preferable case study on implementation of the utility model; It is not the protection domain that is used to limit the utility model; Therefore, any modification of being done within all spirit and principles at the utility model, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (5)
1. the automatic reciprocating big discharge capacity fluid plunger pump in down-hole is characterized in that, comprising:
Oil hydraulic cylinder, said oil hydraulic cylinder internal fixation is provided with transition joint;
Fluid cylinder, said fluid cylinder quantity is 2, symmetry connects and to be arranged on said oil hydraulic cylinder two ends, is provided with sliding piston between said fluid cylinder and the oil hydraulic cylinder, said piston at the useful area of fluid cylinder greater than useful area at oil hydraulic cylinder.
2. the automatic reciprocating big discharge capacity fluid plunger pump in down-hole as claimed in claim 1, it is characterized in that: said piston is provided with magnet, and said fluid cylinder two ends are provided with corresponding said magnet and are used for the auto reversive Hall transducer of said piston.
3. the automatic reciprocating big discharge capacity fluid plunger pump in down-hole as claimed in claim 2, it is characterized in that: be connected with rubber ring on the said magnet, said magnet also is sleeved in the soft cover.
4. the automatic reciprocating big discharge capacity fluid plunger pump in down-hole as claimed in claim 3 is characterized in that: be connected with Rapid-turning nut in the said transition joint.
5. the automatic reciprocating big discharge capacity fluid plunger pump in down-hole as claimed in claim 4, it is characterized in that: said fluid cylinder two ends also are provided with the screw thread ejector pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201964504U CN202100431U (en) | 2011-06-13 | 2011-06-13 | Underground automatic reciprocating fluid plunger pump with large discharging volume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201964504U CN202100431U (en) | 2011-06-13 | 2011-06-13 | Underground automatic reciprocating fluid plunger pump with large discharging volume |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202100431U true CN202100431U (en) | 2012-01-04 |
Family
ID=45386446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201964504U Expired - Lifetime CN202100431U (en) | 2011-06-13 | 2011-06-13 | Underground automatic reciprocating fluid plunger pump with large discharging volume |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202100431U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106542131A (en) * | 2017-01-13 | 2017-03-29 | 蓝润竹 | A kind of efficient packaging process and equipment |
| CN108468639A (en) * | 2018-05-29 | 2018-08-31 | 南京聚源隆能源科技有限公司 | A kind of well liquid drives the automatic reversing apparatus of reciprocal reciprocating oil pumping system |
| CN108506179A (en) * | 2018-05-29 | 2018-09-07 | 南京聚源隆能源科技有限公司 | A kind of well liquid drive reciprocal reciprocating oil pumping system |
-
2011
- 2011-06-13 CN CN2011201964504U patent/CN202100431U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106542131A (en) * | 2017-01-13 | 2017-03-29 | 蓝润竹 | A kind of efficient packaging process and equipment |
| CN108468639A (en) * | 2018-05-29 | 2018-08-31 | 南京聚源隆能源科技有限公司 | A kind of well liquid drives the automatic reversing apparatus of reciprocal reciprocating oil pumping system |
| CN108506179A (en) * | 2018-05-29 | 2018-09-07 | 南京聚源隆能源科技有限公司 | A kind of well liquid drive reciprocal reciprocating oil pumping system |
| CN108468639B (en) * | 2018-05-29 | 2024-03-22 | 南京聚源隆能源科技有限公司 | Automatic reversing device of oil well liquid-driven reciprocating oil pumping system |
| CN108506179B (en) * | 2018-05-29 | 2024-03-22 | 南京聚源隆能源科技有限公司 | Oil well liquid drives reciprocal oil pumping system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China Oilfield Services Limited Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China Oilfield Services Limited Patentee before: China National Offshore Oil Corporation |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120104 |