CN213869777U

CN213869777U - Hydraulic rat hole structure

Info

Publication number: CN213869777U
Application number: CN202023163742.6U
Authority: CN
Inventors: 黄岩; 徐鸿伟; 陈亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-08-03
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a hydraulic pressure type rat hole structure relates to well drilling and deposits technical field with supplementary utensil, it includes the rat hole body and sets up in the hydraulic pressure climbing mechanism that its entrance to a cave one side was kept away from to the rat hole body, hydraulic pressure climbing mechanism includes that cylinder and slidable set up in the cylinder and have the piston rod subassembly of second grade stroke, the cylinder is provided with the end cover, the flexible end movably of piston rod subassembly passes the end cover and is fixed with the roof, the roof can be under the concertina movement of piston rod subassembly towards the direction removal that is close to or keeps away from rat hole body entrance to a cave. The utility model discloses a mode that hydraulic pressure goes up and down realizes that the drilling tool puts into the regulatory function of length, has continuous control, easy operation's advantage to hydraulic pressure goes up and down to have the second grade stroke characteristics, not only the stroke scope is bigger, can realize stopping in grades moreover, and the usability is stronger.

Description

Hydraulic rat hole structure

Technical Field

The utility model relates to a technical field is deposited with supplementary utensil to the well drilling, particularly, relates to a fluid pressure type rat hole structure.

Background

In the drilling operation, the use of a rat hole is usually involved in the construction operation processes of receiving a drilling tool, throwing the drilling tool, running a casing pipe and the like. At present, a rat hole is generally transformed by a sleeve, a hanging lug is welded at the upper end of the sleeve and is hung on a drilling platform surface, a plurality of holes are arranged at the lower end of the sleeve, and a stop pin (usually a bolt) is inserted. The different heights of the drilling tool placed in the rat hole can be determined by adjusting the positions of the corresponding stop pins. The traditional rat hole structure has the problems of inconvenient adjustment, weak continuity and troublesome operation.

In view of this, the present application is specifically made.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fluid pressure type rat hole structure, this rat hole structure realize through the mode that hydraulic pressure goes up and down that the drilling tool puts into the regulatory function of length, have continuous control, easy operation's advantage to hydraulic pressure goes up and down to have the second grade stroke characteristics, not only the stroke scope is bigger, can realize stopping in grades moreover, and the usability is stronger.

The embodiment of the utility model is realized like this: the utility model provides a hydraulic pressure type rat hole structure, includes the rat hole body and sets up in the hydraulic pressure climbing mechanism that its entrance to a cave one side was kept away from to the rat hole body, and hydraulic pressure climbing mechanism includes that cylinder and slidable set up in the cylinder and have the piston rod subassembly of second grade stroke, and the cylinder is provided with the end cover, and the flexible end movably of piston rod subassembly passes the end cover and is fixed with the roof, and the roof can be moved towards the direction that is close to or keeps away from rat hole body entrance to a cave under the concertina movement of piston rod subassembly.

Furthermore, hydraulic pressure climbing mechanism is located the hole bottom department of mousehole body, and the mouse hole body lateral wall that is close to hole bottom department has seted up the trash cleaning mouth, but trash cleaning mouth department installs open closed dodge gate.

The piston rod assembly comprises a first piston, a second piston, a guide cylinder and a piston rod, the first piston, the second piston, the guide cylinder and the piston rod are all arranged in an inner hole of the cylinder barrel and can move along the axial direction of the inner hole of the cylinder barrel, the inner hole of the cylinder barrel is divided into a first oil storage space and a second oil storage space which are independent of each other by the first piston, a first oil duct and a second oil duct are formed in the cylinder barrel, the first oil duct is communicated between the outside of the cylinder barrel and the first oil storage space, and the second oil duct is communicated between the outside of the cylinder barrel and the second oil storage space; the guide cylinder is fixed on one side of the first piston close to the second oil storage space, the inner hole of the guide cylinder is communicated with the second oil storage space, the second piston is located in the inner hole of the guide cylinder and divides the inner hole into two independent secondary oil storage spaces, one of the secondary oil storage spaces is communicated with the first oil storage space, the other secondary oil storage space is communicated with the second oil storage space, one end of the piston rod is connected with the second piston, and the other end of the piston rod forms a telescopic end of the piston rod assembly.

Furthermore, the end cover of the cylinder barrel is connected with the hole bottom of the rat hole body through a flange, and the cylinder barrel is positioned on one side of the hole bottom, which is far away from the hole opening of the rat hole body.

Further, the first oil passage and the second oil passage are communicated with the outside of the cylinder barrel through the bottom surface wall of the cylinder barrel.

Further, the second oil passage has at least ports respectively communicating with opposite sides of the second oil storage space.

Further, the external diameter of guide cylinder is less than the external diameter of first piston, and the guide cylinder is kept away from and is formed first clearance between the one end of first piston and the inside wall of end cover, and second oil storage space communicates with the hole accessible first clearance of guide cylinder each other.

Furthermore, the inner side wall of the end cover is formed into a limiting sleeve towards one side of the first piston, the limiting sleeve is located in the inner hole of the cylinder barrel and sleeved on the guide cylinder, a second gap is formed between one end, away from the end cover, of the limiting sleeve and the first piston, and the inner hole of the cylinder barrel is communicated with the first gap through the second gap.

The embodiment of the utility model provides a beneficial effect is:

the embodiment of the utility model provides a rat hole structure is through the piston rod subassembly that has the second grade stroke at this internal setting of rat hole, and this piston rod subassembly's flexible end is fixed with the roof, and the roof can be put the support of drilling tool, and the rethread drives the roof that stretches out and draws back to can decide the drilling tool and put into the different heights in the rat hole. Compared with the traditional mode of changing the position of the stop pin, the mode has more automatic operation and has the advantages of convenience and simplicity; in addition, the piston rod assembly has a secondary stroke, namely the piston rod assembly can continue to extend out after reaching the end of the stroke of the first stage and reach the stroke of the second stage, so that the stroke range is larger, and the end stroke of the first stage can be used as a primary stopping point for supporting and placing the drilling tool at the conventional height, so that the use function is stronger.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of a rat hole structure provided in an embodiment of the present invention;

fig. 2 is a first schematic structural diagram of a hydraulic jacking mechanism provided in an embodiment of the present invention;

fig. 3 is a schematic structural diagram ii of the hydraulic jacking mechanism provided in the embodiment of the present invention.

Icon: 1-rat hole body; 2-an opening; 3-drilling tool; 4-a movable door; 5-a top plate; 6-hydraulic jacking mechanism; 7-a flange; 601-a cylinder barrel; 602-a first piston; 603-a second piston; 604-a piston rod; 605-a guide cylinder; 606-a first oil gallery; 607-a second oil passage; 608-limit sleeve; 609-end cap; 610-an inner hole; 611-a first oil storage space; 612-a second oil storage space; 613-first gap; 614-second gap.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1 to 3, a hydraulic mousehole structure provided in this embodiment includes a mousehole body 1 and a hydraulic jacking mechanism 6 disposed on a side of the mousehole body 1 away from a hole opening 2, where a plane of the hole opening 2 is a drilling floor, and an exposed height of a drilling tool 3 relative to the drilling floor is a length of the drilling tool 3 placed in the mousehole. The hydraulic jacking mechanism 6 comprises a cylinder 601 and a piston rod assembly which is slidably arranged in the cylinder and has a two-stage stroke, the cylinder is in a form that one end of the cylinder is sealed and the other end of the cylinder is open, and an end cover 609 is arranged at the open end of the cylinder so as to achieve a better sealing state. The telescopic end of the piston rod assembly movably penetrates through the end cover 609 and is fixed with a top plate 5, and one side, away from the telescopic end of the piston rod assembly, of the top plate 5 forms a supporting platform of the drilling tool 3, so that the drilling tool 3 can be stably placed in the supporting platform. And the top plate 5 can move towards the direction close to or far away from the hole 2 under the telescopic motion of the piston rod assembly, thereby achieving the purpose of adjusting the putting-in length of the drilling tool 3.

The traditional mode of changing the putting length of the drilling tool 3 by changing the position of the stop pin has poor applicability, is not suitable for the drilling tools 3 with all lengths, particularly the drilling tools such as drill collars and screws are usually short, and cannot meet the requirement of placing different drilling tools 3 with large length difference; and has the defects of long operation time, troublesome operation process, easy damage of the stop pin and the like. Compared with the traditional mode of changing the stop pin, the hydraulic lifting mode of the embodiment has the advantages of high automation degree, continuous adjustment and convenience in operation, meanwhile, the piston rod assembly has a secondary stroke, namely the piston rod assembly can continuously extend out and reach a second-stage stroke after reaching the end of the first-stage stroke, the stroke range is larger, the end stroke of the first stage can be used as a primary stopping point for supporting and placing the drilling tool 3 at the conventional height, and the use function is more and stronger. In addition, hydraulic pressure climbing mechanism 6 is located the hole bottom department of mouse hole body 1, keeps away from the one side of entrance to a cave 2 promptly, and the mouse hole body 1 lateral wall that is close to the hole bottom department has seted up the mouth of decontaminating, and this decontamination department installs open closed dodge gate 4, and the 4 switching modes of dodge gate can be realized through the mode through pegging graft, articulated, lock joint or halving with mouse hole body 1 of the department of decontaminating, through the design of this dodge gate 4, can reach the purpose of clearing up debris at any time.

The piston rod assembly has a secondary stroke mode, which means that the piston rod assembly can continue to move to reach a secondary stroke after reaching a primary stroke, and the structural form of a crane telescopic arm or a telescopic bamboo joint cylinder can be adopted. In order to achieve the purpose of more stable operation, in the present embodiment, the piston rod assembly includes a first piston 602, a second piston 603, a guide cylinder 605 and a piston rod 604, and the first piston 602, the second piston 603, the guide cylinder 605 and the piston rod 604 are all disposed in the inner hole 610 of the cylinder 601 and are all capable of moving along the axial direction of the inner hole 610, so as to have a structural condition of axial expansion and contraction. The first piston 602 divides an inner hole 610 of the cylinder 601 into a first oil storage space 611 and a second oil storage space 612 which are independent of each other, a first oil duct 606 and a second oil duct 607 are formed in the cylinder 601, the first oil duct 606 is communicated between the outside of the cylinder 601 and the first oil storage space 611, the second oil duct 607 is communicated between the outside of the cylinder 601 and the second oil storage space 612, the purpose of pushing the first piston 602 to move towards the corresponding direction is achieved by filling hydraulic oil in the first oil duct 606 and the second oil duct 607, when one of the first oil duct 606 and the second oil duct 607 serves as an oil inlet duct, the other one serves as an oil return duct, if the first oil duct 606 is filled with the hydraulic oil, one end of the inner hole 610 of the first piston 602 can be pushed to move, and otherwise the other end of the inner hole 610 of the first piston 602 is pushed to move.

The purpose of having a primary stroke is achieved through the above design, and in order to achieve the purpose of having a secondary stroke, the guide cylinder 605 is fixed on one side of the first piston 602 close to the second oil storage space 612, and an inner hole of the guide cylinder 605 is communicated with the second oil storage space 612. The second piston 603 is slidably located in the inner hole of the guide cylinder 605, and divides the inner hole of the guide cylinder 605 into two independent secondary oil storage spaces, wherein one secondary oil storage space is communicated with the first oil storage space 611, and the other secondary oil storage space is communicated with the second oil storage space 612, when the first oil channel 606 is filled with hydraulic oil, the first oil storage space 611 is increased and pushes the first piston 602 to move, when the first piston 602 moves in place or is blocked, the hydraulic oil is continuously filled and enters the secondary oil storage space communicated with the first oil storage space 611, and the second piston 603 is pushed to move by utilizing the increase of the space, so that the purpose of having a secondary stroke is achieved. One end of the piston rod 604 is connected to the second piston 603, and the other end forms a telescopic end of the piston rod assembly, i.e., an end portion capable of passing through the end cap 609 and being connected to the top plate 5, thereby achieving the purpose that the piston rod 604 can realize a two-stage telescopic stroke. When the piston rod 604 needs to be retracted, the hydraulic oil is filled and enters the second oil storage space 612, and the first piston 602 and the second piston 603 are pushed back respectively.

In order to manage the pipelines of the first oil passage 606 and the second oil passage 607 conveniently, the end cover 609 of the cylinder 601 is connected with the bottom of the rat hole body 1 through the flange 7, specifically, the main body of the rat hole body 1 is a sleeve, and the end cover 609 is detachably connected with the rat hole body 1 through the flange 7 in advance, so that the purpose of synchronous dismounting and mounting along with the rat hole body 1 in a designated pit can be achieved. The cylinder 601 is located the hole bottom and keeps away from one side of entrance to a cave 2, is about to main operating space shifts to rat hole body 1 from the hole of rat hole body 1 outside, and operating space is bigger, more conveniently installs management such as dismantlement to the pipeline. In addition, the first oil passage 606 and the second oil passage 607 are both communicated with the outside of the cylinder 601 through the bottom surface wall of the cylinder 601, that is, the oil receiving ports of the first oil passage 606 and the second oil passage 607 are located at the bottom of the cylinder 601, and the pipeline is in an almost vertical state after being connected, so that the possibility of oil leakage or leakage amount can be improved.

In this embodiment, the second oil channel 607 at least has two ports respectively communicating with two opposite sides of the second oil storage space 612, that is, at least two oil outlet ports of the second oil channel 607 are respectively communicated with two opposite sides of the second oil storage space 612, so that it can be ensured that oil is uniformly fed or returned in the second oil storage space 612. In addition, the outer diameter of the guide cylinder 605 is smaller than the outer diameter of the first piston 602, a step can be formed between the guide cylinder 605 and the first piston 602, a first gap 613 is formed between one end of the guide cylinder 605 away from the first piston 602 and the inner side wall of the end cover 609, the second oil storage space 612 and the inner hole of the guide cylinder 605 can be communicated with each other through the first gap 613, and the purpose of controlling the first-stage stroke can be achieved by controlling the size of the interval of the first gap 613, namely, the size of the interval of the first gap is the maximum distance of the first piston 602 moving towards the end cover 609, when the guide cylinder 605 abuts against the inner side wall of the end cover 609 (the side wall close to the inner hole 610), the first piston 602 cannot move continuously, and at this time, the second-stage stroke is opened, and the second piston 603 moves continuously. During oil return, the oil is pushed and moved by the step between the guide cylinder 605 and the first piston 602, and then the second piston 603 can be pushed and moved when the guide cylinder 605 is separated from the end cover 609.

In order to achieve the purpose that the first piston 602 retracts to the right position and the second piston 603 retracts to the right position during oil return, a limiting sleeve 608 is formed on the inner side wall of the end cover 609 towards one side of the first piston 602, the limiting sleeve 608 is located in an inner hole of the cylinder 601 and coaxially sleeved on the guide cylinder 605, the limiting sleeve 608 and the guide cylinder 605 are in an inner-outer non-contact movable sleeved state and are abutted or contacted with each other only after a certain stage of stroke is in the right position or reset, a second gap 614 is formed between one end of the limiting sleeve 608, which is far away from the end cover 609, and the first piston 602, and the inner hole 610 of the cylinder 601 are communicated with the first gap 613 through the second gap 614, so that the second oil storage space 612 and the second oil channel 607 are in a communicated state, and after the first piston 602 moves to the right position by acting on a stepped portion between the guide cylinder 605 and the first piston 602 during oil return, oil enters the guide cylinder 605 through the first gap 613 to push the second piston 603 to move. Of course, the purpose of the first stage stroke may also be controlled by controlling the size of the second gap 614 interval, and preferably, the first gap 613 interval is the same size as the second gap 614 interval.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that structures or components illustrated in the drawings are not necessarily drawn to scale, and descriptions of well-known components and processing techniques and technologies are omitted to avoid unnecessarily limiting the invention.

Claims

1. A hydraulic type rat hole structure is characterized by comprising a rat hole body and a hydraulic jacking mechanism arranged on one side, far away from a hole opening, of the rat hole body, wherein the hydraulic jacking mechanism comprises a cylinder barrel and a piston rod assembly which is slidably arranged in the cylinder barrel and has a two-stage stroke, an end cover is arranged on the cylinder barrel, a telescopic end of the piston rod assembly movably penetrates through the end cover and is fixed with a top plate, and the top plate can move towards a direction close to or far away from the hole opening of the rat hole body under the telescopic motion of the piston rod assembly.

2. The hydraulic mousehole structure according to claim 1, wherein the hydraulic jacking mechanism is located at the bottom of the mousehole body, a dirt cleaning opening is opened on the side wall of the mousehole body close to the bottom of the mousehole body, and an openable movable door is installed at the dirt cleaning opening.

3. The hydraulic rat hole structure according to claim 1, wherein the piston rod assembly comprises a first piston, a second piston, a guide cylinder and a piston rod, the first piston, the second piston, the guide cylinder and the piston rod are all arranged in an inner hole of the cylinder barrel and can move along the axial direction of the inner hole of the cylinder barrel, the first piston divides the inner hole of the cylinder barrel into a first oil storage space and a second oil storage space which are mutually independent, a first oil passage and a second oil passage are formed in the cylinder barrel, the first oil passage is communicated between the outside of the cylinder barrel and the first oil storage space, and the second oil passage is communicated between the outside of the cylinder barrel and the second oil storage space; the guide cylinder is fixed first piston is close to one side in second oil storage space, just the hole of guide cylinder with second oil storage space intercommunication, the second piston is located in the hole of guide cylinder and separate this hole for two independent second grade oil storage spaces, one of them second grade oil storage space with first oil storage space intercommunication, another second grade oil storage space with second oil storage space intercommunication, piston rod one end with the second piston is connected, and the other end forms the flexible end of piston rod subassembly.

4. The hydraulic mousehole structure according to claim 3, wherein the end cover of the cylinder is connected to the bottom of the mousehole body through a flange, and the cylinder is located on the side of the bottom of the mousehole body away from the opening of the mousehole body.

5. The hydraulic mousehole structure according to claim 4, wherein the first oil passage and the second oil passage are both in communication with the outside of the cylinder through the bottom surface wall of the cylinder.

6. The hydraulic mousehole structure according to claim 3 or 5, wherein the second oil passage has at least one port communicating with two opposite sides of the second oil storage space, respectively.

7. The hydraulic mousehole structure according to claim 3, wherein an outer diameter of the guide cylinder is smaller than an outer diameter of the first piston, a first gap is formed between one end of the guide cylinder, which is far away from the first piston, and an inner side wall of the end cover, and the second oil storage space and an inner hole of the guide cylinder can be communicated with each other through the first gap.

8. The hydraulic mousehole structure according to claim 7, wherein a limiting sleeve is formed on the inner side wall of the end cover towards one side of the first piston, the limiting sleeve is located in the inner hole of the cylinder and sleeved on the guide cylinder, a second gap is formed between one end of the limiting sleeve, which is far away from the end cover, and the first piston, and the inner hole of the cylinder and the first gap are communicated with each other through the second gap.