CN215370392U - Chain clamping hydraulic control device with self-opening function for injection head - Google Patents
Chain clamping hydraulic control device with self-opening function for injection head Download PDFInfo
- Publication number
- CN215370392U CN215370392U CN202121492243.3U CN202121492243U CN215370392U CN 215370392 U CN215370392 U CN 215370392U CN 202121492243 U CN202121492243 U CN 202121492243U CN 215370392 U CN215370392 U CN 215370392U
- Authority
- CN
- China
- Prior art keywords
- clamping
- chain
- cylinder
- hydraulic control
- injection head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
A chain clamping hydraulic control device with a self-opening function for an injection head relates to the technical field of continuous oil pipe injection head hydraulic control, and comprises a base and a frame arranged on the base, wherein a chain mechanism, a driving mechanism, a traction mechanism, a clamping mechanism and a slide rail plate are arranged in the frame, the chain mechanism is symmetrically arranged on two sides of a continuous oil pipe, the driving mechanism is used for driving the chain mechanism to rotate, the traction mechanism is arranged at the upper end of the frame and connected with the driving mechanism, the clamping mechanism is arranged on the side wall of the frame, the slide rail plate is arranged between the chain mechanism and the clamping mechanism, and the slide rail plate is fixedly connected with the clamping mechanism. Meanwhile, the technical problem that the oil cylinder is blocked to cause equipment damage can be solved.
Description
Technical Field
The utility model relates to the technical field of hydraulic control of a continuous oil pipe injection head, in particular to a chain clamping hydraulic control device with a self-opening function for the injection head.
Background
The injection head is a core component of coiled tubing operation equipment, and has the main function of descending and lifting the coiled tubing into and out of the well. When the injection head is constructed, positive pressure between the chain mechanism and the oil pipe is provided through the clamping mechanism, so that the function of clamping the continuous oil pipe is realized. At present, a clamping oil cylinder is generally in a control mode of supplying oil to a rod cavity and connecting oil to a rodless cavity, the control is very simple, a clamping mechanism is strictly forbidden to clamp when an injection head has no oil pipe inside, the clamping mechanism can only depend on the self weight of a chain and the tension of a tensioning system to realize clamping and opening, but in practice, the clamping mechanism is difficult to separate by itself due to too long oil supply pipeline and other resistance reasons, when a gap between two groups of chains is too small, idling equipment is easy to cause the collision of clamping blocks outside the chains to cause equipment damage, and meanwhile, the unidirectional control mode is not convenient for oil cylinder exhaust.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a chain clamping hydraulic control device with a self-opening function for an injection head, which can solve the technical problems that in practice, due to the fact that an oil supply pipeline is too long and other resistance reasons exist, a clamping mechanism is difficult to separate automatically, when a gap between two groups of chains is too small, idling equipment is easy to cause collision of clamping blocks on the outer sides of the chains to cause equipment damage, and meanwhile, the unidirectional control mode is inconvenient for air exhaust of an oil cylinder.
In order to achieve the above purpose, the utility model provides the following technical scheme:
the utility model provides a chain presss from both sides tight hydraulic control device of function from opening in area for injection head, includes the base and sets up the frame on the base, be equipped with chain mechanism, actuating mechanism, drive mechanism, clamping mechanism and slide rail board in the frame, chain mechanism symmetry sets up in coiled tubing's both sides, actuating mechanism is used for driving chain mechanism to rotate, drive mechanism installs in the frame upper end and is connected with actuating mechanism, clamping mechanism installs on the lateral wall of frame, the slide rail board sets up between chain mechanism and clamping mechanism, slide rail board and clamping mechanism fixed connection.
In the technical scheme, the chain mechanism is used for lowering or lifting the coiled tubing, the traction mechanism is used for providing power for rotation of the driving mechanism, the clamping mechanism is used for clamping the coiled tubing, and the sliding rail plate is used for bearing transmission of the chain mechanism.
Preferably, the chain mechanism comprises a chain, the chain is sleeved on the driving mechanism, one side of the chain, which is in contact with the driving mechanism, is provided with a plurality of rollers, and the outer side of the chain is provided with a plurality of clamping blocks.
Preferably, the driving mechanism comprises a driving chain wheel at the upper end and a driven chain wheel at the lower end, and the driving chain wheel is connected with the traction mechanism through a speed reducer.
Preferably, the traction mechanism is a hydraulic motor.
Preferably, clamping mechanism is the clamping cylinder, the clamping cylinder is four groups, four groups of clamping cylinders include two last clamping cylinders, four middle clamping cylinders and two lower clamping cylinders, wherein four middle clamping cylinders divide into two sets ofly, four groups of clamping cylinders equidistance distribute, every group clamping cylinder sets up respectively on the lateral wall about the frame, clamping cylinder's piston rod and slide rail board one side fixed connection, the opposite side and the gyro wheel of slide rail board contact.
In the technical scheme, the piston rod of the clamping oil cylinder drives the sliding rail plate to move towards the direction of the continuous oil pipe, so that the sliding rail plate extrudes the chain, and the clamping blocks on the outer side of the chain clamp the two sides of the continuous oil pipe to lift or lower the continuous oil pipe.
Preferably, the clamping cylinder is a double-acting single-piston hydraulic cylinder.
Preferably, the number of the hydraulic motors is two, the two hydraulic motors are respectively connected with two driving sprockets, each hydraulic motor is provided with two ports of forward rotation and reverse rotation, the two ports are respectively a motor a port and a motor B port, the two motor a ports and the two motor B ports are connected in parallel, a selection valve is arranged on each hydraulic motor and used for selecting direction to discharge pressure, an oil supply pipe is connected to each hydraulic motor, one end of the oil supply pipe, far away from the hydraulic motors, is connected with a clamping mechanism, and a hydraulic control reversing valve, a pressure reducing valve and a throttle valve are connected to the oil supply pipe in series.
In the technical scheme, the hydraulic control reversing valve plays a role in switching on and off, and if hydraulic oil enters a rod cavity of the clamping oil cylinder, the hydraulic control reversing valve is automatically closed; if the hydraulic oil does not enter the rod cavity of the clamping oil cylinder, the hydraulic control reversing valve is automatically opened. The relief pressure valve is used for reducing pressure once more to hydraulic motor low pressure side, and the choke valve is used for the control flow for the slow entering hydro-cylinder of hydraulic pressure oil body avoids the too big unable oil return of tight hydro-cylinder total oil return pipe of clamp of oil mass, causes the pressure out, damages equipment.
Preferably, the clamping mechanism is connected with a clamping cylinder main oil return pipe, and the clamping cylinder main oil return pipe is connected with an overflow valve and a hydraulic control one-way valve in parallel.
In the technical scheme, the overflow valve is used for draining oil, so that a safety guarantee effect is achieved, and the overflow valve is favorable for preventing the hydraulic control one-way valve from being unopened, the return of the return oil is not needed, and a rodless cavity of the clamping oil cylinder is suppressed to cause damage; the hydraulic control one-way valve is used for controlling the oil return direction.
Preferably, still include manometer and energy storage ware, the quantity of manometer is three, three manometer sets up respectively on last clamping cylinder, well clamping cylinder and the lower clamping cylinder, the energy storage ware is installed on the base.
In this technical scheme, the manometer is used for showing each way operating pressure, the energy storage ware is used for the buffering to inhale and shakes, lets the working line oil pressure more steady.
Compared with the prior art, the utility model has the beneficial effects that:
a chain clamping hydraulic control device with a self-opening function for an injection head is characterized in that hydraulic oil at the low-pressure side of an opening of a hydraulic motor A, B of the injection head is taken to supply oil to a rodless cavity of a clamping oil cylinder, when the injection head idles through the control of the system, the hydraulic oil automatically enters the rodless cavity and cuts off a main oil return pipe of the clamping oil cylinder to open the clamping oil cylinder, and equipment damage caused by collision of a clamping block inside the injection head can be avoided. When the injection head starts and descends the continuous oil pipe, the oil supply of the rod cavity of the clamping oil cylinder is under pressure, the oil supply of the rodless cavity of the clamping oil cylinder is automatically cut off, the main oil return pipeline of the clamping oil cylinder is opened, the chain clamping is realized, and the phenomenon that the pipeline and the rodless cavity are suppressed and pressed due to the fact that the oil return is obstructed is avoided, and the oil cylinder is damaged.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic structural diagram of a chain clamping hydraulic control device with a self-opening function for an injection head according to the present invention;
fig. 2 is a schematic diagram of a hydraulic control system of a chain clamping hydraulic control device with a self-opening function for an injection head, which is provided by the utility model.
Description of reference numerals:
the hydraulic control system comprises a base 1, a frame 2, a slide rail plate 3, a chain 4, a roller 5, a clamping block 6, a driving chain wheel 7, a driven chain wheel 8, a hydraulic motor 9, an upper clamping cylinder 10, a middle clamping cylinder 11, a lower clamping cylinder 12, a selector valve 13, a hydraulic control reversing valve 14, a pressure reducing valve 15, a throttle valve 16, an overflow valve 17, a hydraulic control one-way valve 18, a clamping cylinder total oil return pipe 19, an oil supply pipe 20 and a pressure gauge 21.
Detailed Description
The utility model will be described in detail by way of example with reference to the accompanying drawings, which form a part hereof, and in which it is to be understood that the described embodiments are by way of illustration only, and not by way of limitation.
As shown in fig. 1-2, a chain clamping hydraulic control device with a self-opening function for an injection head comprises a base 1 and a frame 2 arranged on the base 1, wherein a chain mechanism, a driving mechanism, a traction mechanism, a clamping mechanism and a sliding rail plate 3 are arranged in the frame 2, the chain mechanism is symmetrically arranged on two sides of a continuous oil pipe, the driving mechanism is used for driving the chain mechanism to rotate, the traction mechanism is arranged at the upper end of the frame 2 and connected with the driving mechanism, the clamping mechanism is fixedly arranged on the side wall of the frame 2 through a pin shaft, the sliding rail plate 3 is arranged between the chain mechanism and the clamping mechanism, and the sliding rail plate 3 is fixedly connected with the clamping mechanism.
The chain mechanism comprises a chain 4, the chain 4 is sleeved on the driving mechanism, a plurality of rollers 5 are arranged on one side of the chain 4, which is in contact with the driving mechanism, a plurality of clamping blocks 6 are arranged on the outer side of the chain 4, and the clamping blocks 6 are of a saddle-shaped structure.
The driving mechanism comprises a driving chain wheel 7 at the upper end and a driven chain wheel 8 at the lower end, and the driving chain wheel 7 is connected with the traction mechanism through a speed reducer.
The traction mechanism is hydraulic motor 9, hydraulic motor 9's quantity is two, two hydraulic motor 9 are connected with two driving sprocket 7 respectively, every hydraulic motor 9 all has two ports of corotation and reversal, is motor A mouth and motor B mouth respectively, two motor A mouths and two motor B mouths are parallelly connected each other, be provided with selection valve 13 on the hydraulic motor 9, be connected with on the hydraulic motor 9 and supply oil pipe 20, the one end that hydraulic motor 9 was kept away from to supply oil pipe 20 is connected with clamping mechanism, it has hydraulically controlled switching-over valve 14, relief pressure valve 15 and choke valve 16 to establish ties on the supply oil pipe 20.
Clamping mechanism is the clamping cylinder, the clamping cylinder is two effect single piston pneumatic cylinders, the clamping cylinder is four groups, four clamping cylinder of group include two go up clamping cylinder 10, four in clamping cylinder 11 and two press from both sides tight cylinder 12 down, wherein clamping cylinder 11 divide into two sets ofly in four, four clamping cylinder equidistance of group distribute, every clamping cylinder of group sets up respectively on the lateral wall about frame 2, the piston rod and the 3 one side fixed connection of slide rail board of clamping cylinder, the opposite side and the gyro wheel 5 of slide rail board 3 contact.
The clamping mechanism is connected with a clamping oil cylinder main oil return pipe 19, and an overflow valve 17 and a hydraulic control one-way valve 18 are connected to the clamping oil cylinder main oil return pipe 19 in parallel.
Still include manometer 21 and energy storage ware, the quantity of manometer 21 is three, three manometer 21 sets up respectively on last clamping cylinder 10, well clamping cylinder 11 and lower clamping cylinder 12, the energy storage ware is installed on base 1.
The working principle of the hydraulic control system is as follows: the rodless cavity of the oil cylinder takes the AB port low-pressure side of the injection head hydraulic motor 9 through the selector valve 13 for oil supply, when the upper clamping oil supply is pressurized, the hydraulic control reversing valve 14 is automatically closed, and the hydraulic control one-way valve 18 is opened. When the upper clamping oil supply is not pressure, the hydraulic control reversing valve 14 is automatically opened, the hydraulic control one-way valve 18 is closed, and the pilot control ports of all the valves have zero leakage.
When the injection head lifts off the coiled tubing, the clamping system clamps the rod cavity of the oil cylinder for supplying oil, the pressure of the pilot ports of the hydraulic control reversing valve 14 and the hydraulic control one-way valve 18 exceeds the action pressure of the hydraulic control reversing valve, the hydraulic control reversing valve 14 is closed, the hydraulic control one-way valve 18 is opened, the main oil return pipe 19 of the clamping oil cylinder is smooth at the moment, no other oil is supplied, and the clamping oil cylinder clamps the chain 4 under the pressure of the rod cavity.
In the running and standby state of the injection head without an oil pipe, hydraulic oil passes through a pressure reducing valve 15 from an oil taking port through a hydraulic control reversing valve 14 (open) and is reduced to be slightly lower than the pressure bearing value of a rodless cavity of the oil cylinder, passes through a throttle valve 16 and enters the rodless cavity of the oil cylinder, a hydraulic control one-way valve 18 on a main oil return pipe 19 of the clamping oil cylinder is closed, the pressure set by an overflow valve 17 is the maximum working pressure of the rodless cavity of the clamping oil cylinder, and at the moment, the chain 4 can be automatically opened.
The utility model relates to a chain clamping hydraulic control device with a self-opening function for an injection head, which is characterized in that hydraulic oil at the low-pressure side of an opening of a hydraulic motor A, B of the injection head is taken to supply oil to a rodless cavity of a clamping oil cylinder, when the injection head idles under the control of the system, the hydraulic oil automatically enters the rodless cavity and cuts off a main oil return pipe of the clamping oil cylinder to open the clamping oil cylinder, and equipment damage caused by collision of a clamping block inside the injection head can be avoided. When the injection head starts and descends the continuous oil pipe, the oil supply of the rod cavity of the clamping oil cylinder is under pressure, the oil supply of the rodless cavity of the clamping oil cylinder is automatically cut off, the main oil return pipeline of the clamping oil cylinder is opened, the chain clamping is realized, and the phenomenon that the pipeline and the rodless cavity are suppressed and pressed due to the fact that the oil return is obstructed is avoided, and the oil cylinder is damaged.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the application concepts of the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (9)
1. The utility model provides a chain that is used for injection head to press from both sides tight hydraulic control device of function from opening in area, includes base (1) and sets up frame (2) on base (1), its characterized in that: be equipped with chain mechanism, actuating mechanism, drive mechanism, clamping mechanism and slide rail board (3) in frame (2), chain mechanism symmetry sets up in coiled tubing's both sides, actuating mechanism is used for driving chain mechanism to rotate, drive mechanism installs in frame (2) upper end and is connected with actuating mechanism, clamping mechanism installs on the lateral wall of frame (2), slide rail board (3) set up between chain mechanism and clamping mechanism, slide rail board (3) and clamping mechanism fixed connection.
2. The chain clamping hydraulic control device with self-opening function for the injection head as claimed in claim 1, wherein: the chain mechanism comprises a chain (4), the chain (4) is sleeved on the driving mechanism, a plurality of rollers (5) are arranged on one side of the chain (4) contacting with the driving mechanism, and a plurality of clamping blocks (6) are arranged on the outer side of the chain (4).
3. The chain clamping hydraulic control device with self-opening function for the injection head as claimed in claim 1, wherein: the driving mechanism comprises a driving chain wheel (7) at the upper end and a driven chain wheel (8) at the lower end, and the driving chain wheel (7) is connected with the traction mechanism through a speed reducer.
4. The chain clamping hydraulic control device with self-opening function for the injection head as claimed in claim 1, wherein: the traction mechanism is a hydraulic motor (9).
5. The chain clamping hydraulic control device with self-opening function for the injection head as claimed in claim 1, wherein: clamping mechanism is for pressing from both sides tight hydro-cylinder, it is four groups to press from both sides tight hydro-cylinder, four groups press from both sides tight hydro-cylinder (11) and two lower tight hydro-cylinder (12) including two last tight hydro-cylinders (10), four in press from both sides tight hydro-cylinder (11) and divide into two sets ofly, four groups press from both sides tight hydro-cylinder equidistance and distribute, every group presss from both sides tight hydro-cylinder and sets up respectively on the lateral wall about frame (2), press from both sides tight hydro-cylinder's piston rod and slide rail board (3) one side fixed connection, the opposite side and gyro wheel (5) of slide rail board (3) contact.
6. The chain clamping hydraulic control device with self-opening function for the injection head as claimed in claim 5, wherein: the clamping oil cylinder is a double-acting single-piston type hydraulic cylinder.
7. The chain clamping hydraulic control device with self-opening function for the injection head as claimed in claim 4, wherein: the quantity of hydraulic motor (9) is two, two hydraulic motor (9) are connected with two driving sprocket (7) respectively, every hydraulic motor (9) all have corotation and two ports of reversal, are motor A mouth and motor B mouth respectively, two motor A mouths and two motor B mouths are parallelly connected each other, be provided with selection valve (13) on hydraulic motor (9), be connected with on hydraulic motor (9) and supply oil pipe (20), the one end that hydraulic motor (9) were kept away from in supply oil pipe (20) is connected with clamping mechanism, it has pilot operated directional control valve (14), relief pressure valve (15) and choke valve (16) to establish ties on supply oil pipe (20).
8. The chain clamping hydraulic control device with self-opening function for the injection head as claimed in claim 1, wherein: the clamping mechanism is connected with a clamping oil cylinder main oil return pipe (19), and an overflow valve (17) and a hydraulic control one-way valve (18) are connected to the clamping oil cylinder main oil return pipe (19) in parallel.
9. The chain clamping hydraulic control device with self-opening function for the injection head as claimed in claim 1, wherein: still include manometer (21) and energy storage ware, the quantity of manometer (21) is three, three manometer (21) set up respectively on last clamping cylinder (10), well clamping cylinder (11) and lower clamping cylinder (12), the energy storage ware is installed on base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121492243.3U CN215370392U (en) | 2021-07-02 | 2021-07-02 | Chain clamping hydraulic control device with self-opening function for injection head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121492243.3U CN215370392U (en) | 2021-07-02 | 2021-07-02 | Chain clamping hydraulic control device with self-opening function for injection head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215370392U true CN215370392U (en) | 2021-12-31 |
Family
ID=79607064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121492243.3U Active CN215370392U (en) | 2021-07-02 | 2021-07-02 | Chain clamping hydraulic control device with self-opening function for injection head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215370392U (en) |
-
2021
- 2021-07-02 CN CN202121492243.3U patent/CN215370392U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200982160Y (en) | Hydraulic lifting synchronous controlling device for drilling rig headframe and base | |
| CN102491174B (en) | Crane, method for controlling tension of steel wire rope and hydraulic system | |
| CN111649023B (en) | Buffering oil supplementing system and method for electro-hydraulic double-control motor driving rotation system | |
| CN107246422A (en) | A kind of reciprocating-type supercharger reversing arrangement and its application | |
| CN215370392U (en) | Chain clamping hydraulic control device with self-opening function for injection head | |
| CN1987040A (en) | Synchronous control device for petroleum drilling rig derrick and base hydraulic lifting | |
| CN112173946B (en) | Concrete pipe pile lifting appliance | |
| CN112196848B (en) | Hydraulic control system of main driving torsion preventing device of shield tunneling machine | |
| CN207278608U (en) | A kind of reciprocating-type supercharger reversing arrangement and its application | |
| CN207278599U (en) | A kind of list is controlled more freely changes reciprocating booster | |
| CN215444561U (en) | Synchronous hydraulic system of series cylinder | |
| CN209494777U (en) | A kind of hydraulic system and the carrier comprising the hydraulic system | |
| CN2539733Y (en) | Hydraulic ropewheel asynchronous multi-claw grab | |
| CN112112867B (en) | Hydraulic control type exhaust valve unit, hydraulic control type exhaust winch control system and winch | |
| CN210162985U (en) | Hydraulic elevator | |
| CN203783998U (en) | Hydraulic-controlfeeding system | |
| CN207879739U (en) | Hydraulic system for all hydraulic caterpillar reverse circulation engineering drilling rig | |
| CN216788847U (en) | Synchronous control system of double-lifting-point hydraulic hoist | |
| CN208764008U (en) | Hydraulic system of chassis | |
| CN208057550U (en) | A kind of Operating Pressure machine | |
| CN213928950U (en) | Hydraulic system for lifting ceiling of oil field well cementation equipment | |
| RU199199U1 (en) | HYDRAULIC WRENCH FOR BREWING AND UNLOCKING PIPES | |
| SU1558769A1 (en) | Vertical canal-lift | |
| CN217207067U (en) | Hydraulic control system of low-density material transportation semitrailer | |
| CN214243568U (en) | Pitching oil cylinder control system and hoisting equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |