CN204357814U - Coiled tubing injection head hydraulic system - Google Patents
Coiled tubing injection head hydraulic system Download PDFInfo
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- CN204357814U CN204357814U CN201420627987.5U CN201420627987U CN204357814U CN 204357814 U CN204357814 U CN 204357814U CN 201420627987 U CN201420627987 U CN 201420627987U CN 204357814 U CN204357814 U CN 204357814U
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- 239000007924 injection Substances 0.000 title claims abstract description 112
- 230000005484 gravity Effects 0.000 claims abstract description 107
- 230000002265 prevention Effects 0.000 claims abstract description 26
- 230000009467 reduction Effects 0.000 claims abstract description 21
- 239000002828 fuel tank Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims description 25
- 238000012360 testing method Methods 0.000 claims description 20
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
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- 244000261422 Lysimachia clethroides Species 0.000 description 1
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Abstract
The utility model discloses a kind of coiled tubing injection head hydraulic system, comprise: fuel tank, oil pump, system control panel, the connection panel being arranged at the hydraulic control device in injection head and hydraulic control device is connected with system control panel, described hydraulic control device comprises a motor braking integrated package, and this motor braking integrated package comprises an inside and is processed with the integrated package main body of connecting passage and is arranged in this main body and by these channel connections position control valve together, reduction valve, sequence valve and selector valve.By this integrated package, controlled check applies braking to motor.Hydraulic control device also controls clamping cylinder, chain tension oil cylinder, blowout prevention box oil cylinder and gravity sensor locked cylinder, wherein promote a wedge-shaped blocks by gravity sensor locked cylinder, locked in the process that gravity sensor can be made to transport at injection head.
Description
Technical field
The utility model relates generally to coiled tubing injection head device, particularly the hydraulic system of coiled tubing injection head.
Background technique
Along with the increase day by day of oil demand amount, the development of petroleum industry, oil equipment, the particularly small-sized equipment of coiled tubing injection head easily are also applied to the exploitation of oil and natural gas more and more widely, be used for performing various different underground work, such as repair service, drilling well, completion and production etc.The coiled tubing of continuous length mainly forces and inserts or take out oil or gas well by coiled tubing injection head.
In general, injection head is bearing on the support on oil well, and the oil pipe of one section of continuous length is wound and is supported on a cylinder, and is transported to injection head via the guiding part of an arc or the device that is commonly called as goose neck.Injection head utilizes the holding device be arranged on the circulation link chain that arranges in opposite directions for a pair clamp and carry coiled tubing.Due to the requirement of the various conditions such as down-hole pressure, injection head needs enough power and coiled tubing could be inserted or take out oil well.At present, injection head adopts hydraulic system as power resources mostly.
Figure 1A and Figure 1B shows the traditional coiled tubing injection head represented by label 10.Injection head 10 comprises two oil hydraulic motors 12, a pair driving sprocket wheel 14, a pair driven sprocket 16, a pair circulation link chain 18, chain tension oil cylinder 20, the clamping side plate 22 driven by one group of clamping cylinder 24 and rolls along clamping side plate and apply the clamping chain 21 of clamping force to holding device.Each circulation link chain 18 is arranged between a driving sprocket wheel 14 and a driven sprocket 16, and by being connected to corresponding chain tension oil cylinder 20 tensioning on driven sprocket 16.Each circulation link chain 18 also carries a series of holding device 26.A pair holding device 26 is in opposite directions pushed to together by clamping chain 21 by compulsion, applies power to clamp coiled tubing to the coiled tubing between them.Meanwhile, this is recycled chain drive to holding device.Therefore, driven by oil hydraulic motor 12 above well head by the coiled tubing shown in the dotted line of Figure 1B and move up or down, coiled tubing is transferred or takes out oil well.Simultaneously in the below of injection head 10, have blowout prevention box 30, coiled tubing, through blowout prevention box, can be sealed, and enters preventer below and oil well afterwards again.
Injection head hydraulic system is equipped with fuel tank and oil pump to provide power to range of motion parts such as oil hydraulic motor, chain tension oil cylinder, clamping cylinders, and generally include the Hydraulic System Control Panel be arranged in independent control room and the multiple various dissimilar valves be arranged in injection head, these elements are connected by the pipeline of different length, and are connected to system control panel and hydraulic power supply by pipeline again.Various pipeline and various valve make whole hydraulic system line arrangement very too fat to move, loaded down with trivial details.If it is improper to arrange, the running of equipment may be interfered with, pipeline even can be made to be rolled in the chain of rotation, time serious, affect the operation of injection head, even can damage equipment.
As everyone knows, hydraulic system running safety problem receive much concern always, can provide performance safety, Operation and maintenance easily equipment be the target that people constantly pursue always.
Model utility content
Therefore, the purpose of this utility model is to provide safety, succinct injection head hydraulic system, avoids equipment failure, improves the safety of operator simultaneously.
To achieve these goals, coiled tubing injection head hydraulic system of the present utility model comprises: fuel tank, oil pump, system control panel, be arranged in injection head for control injection head moving element hydraulic control device, and be arranged at the connection panel be connected with system control panel by hydraulic control device in injection head, described hydraulic control device comprises the motor braking integrated package being controlled the running of injection head oil hydraulic motor by lock, this motor braking integrated package comprises an inside and is processed with the integrated package main body that connecting passage and surface are provided with connecting port and the position control valve be arranged in this integrated package main body, reduction valve, sequence valve and selector valve, described valve is connected by the passage in integrated package main body, is mounted for one, is arranged in the oil hydraulic circuit of motor, when applying brake guide's hydraulic pressure by system control panel to motor braking integrated package, hydraulic pressure is applied on lock by motor braking integrated package, and lock discharges, and does not apply braking to oil hydraulic motor, when cancelling to motor braking integrated package applying brake guide's hydraulic pressure, do not have hydraulic pressure to be applied on lock by motor braking integrated package, lock applies braking to motor, and motor is stopped.
Further, junction surface strip has the lower tubing pressure of display, plays the instrument of tubing pressure, the pressure applying clamping, chain tension pressure, motor displacement and brake pressure.
In addition, the front surface of the connection panel of the utility model injection head hydraulic system is provided with the interface be connected with the hydraulic line from system control panel, and the rear surface connecting panel is provided with the interface be connected with the pipeline of the hydraulic control device from injection head; These interfaces comprise brake pressure, brake guide, motor displacement, applying clamping, unclamp clamping, chain greasisng, chain tension, blowout prevention box lubrication, blowout prevention box is opened, blowout prevention box closes, gravity sensor locks, gravity sensor lock unclamp and fuel tank reflux.
Further, in the utility model the integrated package main body of motor braking integrated package include be connected to lock port, be connected to the fuel tank backflow connected on panel, pilot port of braking, be connected to the port of lower tubing pressure instrument and a tubing pressure instrument; In addition, system control panel is provided with manual operation switch, selectively applies to brake pilot port or cancel hydraulic pressure; The brake guide hydraulic pressure applied is applied to a port of position control valve, its make to flow through selector valve, sequence valve, reduction valve the fluid of setting pressure scope flow to lock by this position control valve, lock is discharged, and the fluid higher or lower than this setting pressure can not lead to lock.
Further, integrated package main body also comprises three test ports further, first test port is connected with reduction valve with position control valve, second test port is connected with sequence valve with reduction valve, 3rd test port is connected with selector valve with sequence valve, whether is working properlyly used for testing these four valves.Integrated package main body also comprises via hole further, for connecting the passage of integrated package body interior; After motor braking integrated package machines, via hole leads to outside port by plug seal.
In the utility model, oil pump comprises an enclosed oil pump and an open type oil pump, and enclosed oil pump provides power for oil hydraulic motor; Open type oil pump is for providing power for applying the clamping cylinder of clamping force, chain tension oil cylinder, blowout prevention box oil cylinder and gravity sensor locked cylinder to coiled tubing.
Further, the utility model injection head hydraulic system comprises velocity fuse and accumulator further, accumulator is connected between velocity fuse and clamping cylinder, the other end of velocity fuse is connected to " applying clamping " interface connected on panel, when injection head hydraulic system occurs unexpected, if from when applying the rate of flow of fluid that flows to of pinching end higher than a preset flow rate, velocity fuse is closed, liquid is stoped to flow to clamping cylinder further, now, clamping cylinder provides hydraulic pressure by accumulator, continues to implement clamping function.
Further, the utility model coiled tubing injection head hydraulic system, also comprise gravity sensor locking device, it comprises the instrument of hydraulic pressure in two locked cylinders, a display pipeline, an accumulator and a hand control valve, and each locked cylinder drives a gravity sensor supporting component respectively; Described sensor support assembly is positioned at by gravity sensor, and supports injection head body frame; When needs locking gravity sensor, drive locked cylinder piston to stretch out, promote supporting component drive injection head body frame moves, do not have gravity to be applied on gravity sensor, gravity sensor is locked.Now, throttle down, the hydraulic pressure in locked cylinder and hydraulic pipe line remains in pipeline by accumulator, and disconnect the hydraulic line of this gravity sensor locking device, injection head can by independent transport; When injection head prepares to carry out work, hydraulic line is reconnected to this gravity table locking device, open valve, hydraulic pressure is applied to this device, the piston of locked cylinder is retracted, and cause supporting component to drive injection head body frame to move down, the Action of Gravity Field of injection head is on gravity sensor, gravity sensor works, i.e. lockout.
Described supporting component comprises of being fixedly connected with the piston of locked cylinder further and promotes wedge-shaped blocks, and promotes wedge-shaped blocks and engages and the driven wedge-shaped blocks be fixed as one with the body frame in injection head and adjust bolt; The sphenoid surface promoting wedge-shaped blocks upper surface engages with the sphenoid surface of driven wedge-shaped blocks lower surface, when promoting wedge-shaped blocks and moving horizontally under the driving of gravity sensor locked cylinder, promoting driven wedge-shaped blocks drives injection head body frame to move up and down, thus body frame is lifted or declines, depart from or engage gravity sensor, with this, gravity sensor being in and not working or working state; Adjustment bolt is used for adjusting the highest distance position promoting wedge-shaped blocks substantially horizontal and move to.
Described supporting component also comprises the L bracket of supporting heavy force snesor locked cylinder further, supports the base plate promoting wedge-shaped blocks, and two restrictions promote the flanking plastic guide plate of the lateral movement of wedge-shaped blocks, and is provided with the adjustment plate of adjustment bolt; Adjustment bolt can be screwed into forward through adjustment plate and returns backward, and adjustment bolt can be screwed into forward and to draw back adjustment position through adjustment plate.
Further, the utility model coiled tubing injection head hydraulic system, also comprise an equilibrium valve integrated package led to two motors, this equilibrium valve integrated package comprises an equilibrium valve integrated package main body and mounted thereto two equilibrium valves; Except having the port of connection two equilibrium valves in equilibrium valve integrated package main body, be connected to each port of " playing oil pipe " and " lower oil pipe " and motor etc. in addition, its inside is processed with connecting passage, and each port couples together by the requirement according to hydraulic control device; This equilibrium valve integrated package main body also comprises via hole, and for secondary process to connect the passage of integrated package body interior, after machining, via hole leads to outside port by plug seal.
Accompanying drawing explanation
Below accompanying drawing of the present utility model is described in detail:
Figure 1A is the perspective view of traditional coiled tubing injection head;
Figure 1B be along O in Figure 1A ?the cross sectional view of O;
Fig. 2 is the schematic block diagram that the utility model hydraulic system connects;
Fig. 3 is the catenation principle figure of hydraulic connecting panel in hydraulic system shown in Fig. 2 and hydraulic control device;
Fig. 4 A is the front view connecting panel;
Fig. 4 B is the side view of the connection panel shown in Fig. 4 A;
Fig. 4 C is the perspective view that the connection panel shown in Fig. 4 A is seen from behind;
Fig. 5 is the catenation principle figure of motor braking integrated package in Fig. 3;
Fig. 6 is the entity component perspective view of motor braking integrated package in Fig. 3;
Fig. 7 is that the entity component of the braking of motor shown in Fig. 6 integrated package is from the lateral plan viewed from D direction;
Fig. 8 is the perspective view of the integrated package main body in the braking of motor shown in Fig. 6 integrated package;
Fig. 9 is that six of the main body of integrated package shown in Fig. 8 launch view;
Figure 10 is that six of integrated package body internal passageway shown in display Fig. 8 launch view;
Figure 11 be along Figure 10 E ?the cross sectional view in E direction;
Figure 12 is the assembly perspective view of equilibrium valve integrated package;
Figure 13 is that six of the integrated package main body of equilibrium valve integrated package launch view;
Figure 14 is that six of integrated package body internal passageway shown in display Figure 13 launch view;
Figure 15 is that display is arranged on the gravity sensor of a side on the downside of injection head and the injection head fragmentary, perspective view of gravity sensor locking device;
Figure 16 is the hydraulic principle figure of gravity sensor locking device;
Figure 17 is the perspective view of the locking device of gravity sensor shown in Figure 15;
Figure 18 is the side view of the locking device of gravity sensor shown in Figure 17.
Embodiment
Below with reference to the accompanying drawings, the hydraulic system of the utility model coiled tubing injection head is described in detail.
Skeleton diagram shown in Fig. 2 schematically illustrates the annexation between each several part of composition coiled tubing injection head hydraulic system.The injection head hydraulic system of the present utility model represented by label 1000 comprises fuel tank 100, oil pump 200, the hydraulic control device 400 be arranged in injection head being arranged on the system control panel 300 in an independent control room and being connected with each other by pipeline.Hydraulic control device 400 is connected with the system control panel 300 in control room via hydraulic line by the connection panel 500 be arranged on injection head, by the various control switchs on operation system control panel, drive oil pump and hydraulic control device 400, the moving element of injection head is controlled.In the utility model, two oil pump systems of an enclosed oil pump 200A and open type oil pump 200B are adopted to drive injection head moving element.Wherein, enclosed oil pump 200A, for driving oil hydraulic motor 410, makes it as required, can rotate to the direction that both direction is contrary, carrys out chain drive-belt and drives holding device, carries out oil pipe under coiled tubing 409 and the operation playing oil pipe 408.Open type oil pump 200B drives clamping cylinder 450, chain tension oil cylinder 460, blowout prevention box oil cylinder 470 and gravity sensor locked cylinder 480.Clamping cylinder 450 carries out stretching and controls holding device to the clamping of coiled tubing or unclamp under the driving of oil pump 200B; Chain tension oil cylinder 460 drives chain tensioning mechanism to make chain tension under the promotion of oil pump 200B; Blowout prevention box oil cylinder is also flexible under the driving of oil pump 200B, controls the opening and closing of blowout prevention box; In addition, oil pump 200B stretches by driving the piston of gravity sensor locked cylinder 480, drives a wedge-shaped blocks motion, gravity sensor is not worked, is pinned; Or wedge-shaped blocks is retracted, remove the locking to gravity sensor, details will be described in detail below.
As everyone knows, fuel tank, oil pump and system control panel are applied in oil equipment already, known by technician described in related domain, do not repeat them here.Below with reference to Fig. 3 to Fig. 4 C, the hydraulic control device 400 be arranged in the utility model in injection head and connection panel 500 are described in detail.Connect panel 500 and connect panel for the visual convenience be fixed on injection head base or body frame, this junction surface back is provided with the interface be connected with each pipeline from hydraulic control device 400, except being provided with the instrument of some hydraulic pressure situations in instruction control gear 400 loop before panel, be also provided with the interface be connected with the pipeline from the system control panel 300 in control room.These interfaces comprise for controlling " the brake guide " that brake, " brake pressure " of pressure during for exporting brake, " motor displacement " of hydraulic control motor speed, control " applying clamping " and " clamping and release " interface of clamping cylinder, control " chain tension " interface of tensioning hydro-cylinder, control " blowout prevention box pass " and " blowout prevention box is opened " interface that blowout prevention box oil cylinder is flexible, control " gravity sensor locking " and " gravity sensor lock unclamps " interface of gravity sensor locked cylinder, " chain greasisng " and " " blowout prevention box is also had to lubricate " and " fuel tank backflow " interface.
Connection panel in the present embodiment is provided with six instrument, respectively illustrate some pressure in the pipeline of hydraulic control device, to carry out Real Time Observation, it comprise hydraulic pressure when the lower oil pipe 409 of display operates lower oil pipe table 1, show hydraulic pressure when oil pipe 408 operates play oil pipe table 2, applying clamping table 3, the display chain tension of display hydraulic pressure when applying clamping time the chain tension table 4 of hydraulic pressure, display and control motor speed motor displacement pressure gauge 5 and the brake pressure gage 6 that shows when braking.And this panel is also provided with display tubing weight and the digital watch entering well depth.Fig. 4 A show only the example that panel is arranged, and it should be understood by those skilled in the art that, as required, can add or reduce various different interface or different Displaying Meters.This connection panel integrates all hydraulic pipeline connection interface, makes connection clear, succinct, and is provided with Displaying Meter, easy-to-operat person observe at any time, if any accident, take corresponding operating measure in time, improve agility and the Security of equipment operating.
With further reference to the detailed connection diagram of the hydraulic control device 400 shown in Fig. 3, hydraulic control device 400 comprises further and controls sub-device and the sub-device of motor control with enclosed oil pump 200A UNICOM with the oil cylinder of the various oil cylinder of control of open type oil pump 200B UNICOM.Oil cylinder controls sub-device and controls clamping cylinder 450, chain tension oil cylinder 460, blowout prevention box oil cylinder 470 and gravity sensor locked cylinder 480 etc.Have three pairs of clamping cylinders 450 in the utility model, it is two-way cylinder.Each oil cylinder has one end to connect with " clamping and release " interface being connected panel, the other end is connected with accumulator 452, accumulator is filled with pressure in advance, it ensures that clamping cylinder loop is when losing pressure, continue to apply pressure to clamping cylinder, make holding device can not lose clamping force at once, cause system out of control.Accumulator 452 is connected with a velocity fuse 454 further, and then is connected to " applying clamping " interface on hydraulic connecting panel.When applying hydraulic pressure to " applying clamping " end, promoting clamping cylinder to clamping side plate force, making gripping apparatus grips coiled tubing.When applying hydraulic pressure to " clamping and release " end, clamping cylinder is regained, and stops, to clamping side plate force, making holding device unclamp coiled tubing.Velocity fuse 454 in this circuit is for the Peak Flow Rate of the fluid of restricted passage.If due to line fracture or other accidental causes in underground, flow rate of liquid is more than a particular value, this velocity fuse is closed immediately or is cut off fluid and flows further through clamping cylinder, is damaged or coiled tubing is excessively clamped to prevent oil cylinder, and causes damaging.When velocity fuse is cut off, accumulator 452 continues to provide hydraulic pressure to clamping cylinder 450, keeps coiled tubing to continue to be clamped by holding device, does not make coiled tubing come off and fall into well.Once hydraulic system is repaired, injection head recovers normal, and restart simply, velocity fuse will automatically reset, and again be ready in running order.The setting of this velocity fuse further increases the Security of system works.
Chain tension oil cylinder 460 is driven, by chain tension by the hydraulic pressure applied from " chain tension " end when needed.Two ports of blowout prevention box oil cylinder 470 link " blowout prevention box is opened " and " blowout prevention box pass " interface on hydraulic connecting panel 500 respectively, apply hydraulic pressure, will close blowout prevention box to " blowout prevention box pass "; Apply hydraulic pressure to " blowout prevention box is opened " interface, will blowout prevention box be opened.Two ports for locking the oil cylinder 480 of gravity sensor are connected respectively to " gravity sensor locking " and " the gravity sensor lock unclamps " interface connected on panel.When applying hydraulic pressure from " gravity sensor locking " interface, the piston of gravity sensor locked cylinder stretches out, drive one to promote wedge-shaped blocks, this promotion wedge-shaped blocks promotes again to be positioned at a driven wedge-shaped blocks under injection head body frame, thus drives body frame to move up, make body frame higher than the end face of gravity sensor, like this, the institute on injection head is all born by wedge-shaped blocks effectively, does not have power to be applied on gravity sensor, make gravity sensor be in idle state, force snesor of namely weighing locks.When applying hydraulic pressure from " gravity sensor unclamps " interface, piston is retracted, the wedge-shaped blocks making to be positioned under injection head body frame is return, body frame falls, like this, injection head be applied on gravity sensor effectively, gravity sensor bears all power, namely gravity sensor lock unclamps, and gravity sensor is in running order.This gravity sensor lock function is mainly used in the transportation process of injection head equipment.In the process that injection head is transported, gravity sensor should not be subject to other external force, makes it always in running order.Gravity sensor, in transportation process, is generally pulled down by traditional injection head before shipping, is arranged on the position of injection head gravity sensor, carrys out alternative real gravity sensor with the fakement that shape is identical.When injection head is transported to working site, the gravity sensor of fakement removes by user again, reinstalls real gravity sensor.This dismounting repeatedly, not only loaded down with trivial details, and waste a lot of time, cause very large inconvenience.Gravity sensor locking device of the present utility model, before injection head transport, by starting hydraulic pressure lock function, gravity sensor is automatically locked upon calling a subroutine.When injection head arrives user scene, " gravity sensor lock unclamps, and " switch, unclamps gravity sensor lock automatically in driving, make gravity sensor easily enter working state, simplify loaded down with trivial details disassemble and assemble work, save the time, also make injection head be ready to very soon, enter working state.
The sub-device of motor control comprises the various valves of the revolution speed of controlling, direction and brake, in the utility model, the sub-device of motor control comprises a pair filter 402 with one-way valve, a pair equilibrium valve 404 and a motor braking integrated package 420 and controls a pair oil hydraulic motor 410.One of them filter 402 has one end to be connected with " lower oil pipe " the instrument end be connected on panel 500, another filter 402 has one end to connect with " playing oil pipe " the instrument end be connected on panel 500, and the other end of two filters is connected with two equilibrium valves 404 respectively.Each equilibrium valve 404 is arranged between a filter and a motor 410, and by equilibrium valve, two motors 410 are connected, and plays the effect that two motor synchronous are rotated.Equilibrium valve generally plays the effect of brake motor at work, and when hydraulic pressure is enough not large, equilibrium valve stops fluid by entering motor, and motor is not operated.Only have when hydrodynamic pressure reaches enough large working pressure, this valve allows fluid to pass through, and input motor, makes motor running.Each motor has entrance and exit respectively, and respectively with " lower oil pipe " and " rise oil pipe " instrument end UNICOM.When applying pressure from " lower oil pipe " instrument end, revolution, chain drive-belt and holding device rotate to the direction of input oil pipe in well, and fluid refluxes from " oil pipe " instrument end; When applying pressure from " oil pipe " instrument end, motor rotates in the opposite direction, and the direction that chain drive-belt and holding device take out oil pipe outside well is rotated, and fluid refluxes from " playing oil pipe " instrument end.By applying hydraulic pressure from different ports, motor can be rotated to two contrary directions, and then chain drive-belt rotate, and realizes the bidirectional operation of inserting and taking out oil pipe to two contrary directions.In addition, each motor also has a port to be connected with speed adjusting device, by the restriction to this port incoming pressure, can the rotating speed of governor motor, and this port is connected to the motor displacement interface connecting panel.Motor also has the port being connected to fuel tank backflow, with fluid unnecessary in drain line.In the pipeline of backflow from motor to fuel tank, there is leak valve 405.If the pressure in this reflux line is more than a predefined value, such as 50psi, this leak valve is opened, and fluid leaks into circuit outside, in case stop-pass is to the accumulation of pressure of motor, so that causes damage to motor.
Below in conjunction with Fig. 5 to 9, motor braking integrated package 420 is described in detail.Fig. 5 is the catenation principle figure of the motor braking integrated package 420 of the amplification intercepting out a part from Fig. 3, and Fig. 6 is the entity component figure of this motor braking integrated package.Motor braking integrated package of the present utility model is connected with the lock 412 of a pair brake fluid pressure motor, and is connected in the pipeline of " the lower oil pipe " and " playing oil pipe " be communicated with two motors, controls the lock 412 of brake motor.Lock 412 in the present embodiment is spring loading/hydraulic pressure release stopping brake, and this lock, when usual state does not have hydraulic pressure, being in braking state, being in releasing state when there being constant hydraulic pressure.That is, at injection head duration of work, provide the hydraulic pressure signal needed for lasting releasing of brake from " brake guide " end, make lock 412 be in the state of release, braking is not implemented to motor 410.When injection head operation irregularity, or when finding that there is unexpected, can by the hand switch of system control panel, remove to the hydraulic pressure signal needed for " brake guide " end applying brake, fluid, by this braking integrated package, directly flows back to fuel tank, and lock 412 is lower than the hydraulic pressure needed for brake, implement brake, motor is shut down.
Motor braking integrated package 420 comprises a position control valve 422, pressure relief valve/reduction valve 424, sequence valve 426 and a selector valve 428.The port one of position control valve 422 is connected to " brake guide " interface connecting panel, and of being connected to further on system control panel starts the control switch of brake.The port 3 of position control valve 422 is connected on lock, and port 4 refluxes with fuel tank and is connected, and port 2 is test port.Reduction valve 424 is arranged between position control valve 422 and sequence valve 426, and the input port 1 of sequence valve 426 is connected in the loop of holding from " lower oil pipe " or " playing oil pipe ".Selector valve 428 ensures it is the port one all flowing to sequence valve 426 from the fluid in any direction that " lower oil pipe " or " oil pipe " inputs.When motor under normal operating conditions, the fluid inputted from " lower oil pipe " or " oil pipe " is input to the port one of sequence valve 426 through selector valve 428, this sequence valve allows the fluid with certain pressure to flow through, when the fluid higher than this valve setpoint pressure is input to port one, port one is communicated with 2, and liquid flows out to the port 2 of reduction valve 424 from port 2, in the present embodiment, the pressure that sequence valve 426 is arranged is 450psi, lower than the fluid of this pressure, can not pass through this sequence valve.That is, if the hydrodynamic pressure inputted in oil hydraulic circuit is enough not large, fluid can not pass through each flow direction valve lock, lock can not get the pressure needed for release, be in braking state always, only have in oil hydraulic circuit pressure enough large, the present embodiment be at least 450psi time, just likely make lock obtain discharge needed for pressure, not brake motor.
Generally, lock 412 discharges under a suitable pressure range, well below run injection head run needed for pressure, reduction valve 424 is applied to lock 412 for limiting too high pressure exactly, therefore the fluid of reduction valve port 2 is inputted, if higher than its setting value, fuel tank will be flowed back to from port 3, and only allow the fluid lower than this setting value to pass through, flow out from port one, the setting pressure of the present embodiment reduction valve is 550psi, and the liquid higher than 550psi flows out from port 3, returns fuel tank.From the port 2 of the direction of flow position control valve 422 that reduction valve port one flows out.When the port one to position control valve 422, when namely " brake guide " port applies hydraulic pressure signal, port 2 and the port 3 of position control valve are connected, pressure be 450psi ?the constant hydraulic of 550psi flow out from port 3 and be applied to lock, lock is made to be in releasing state, not brake motor.When stopping applying hydraulic pressure signal to " brake guide " end, the fluid flowing to this position control valve directly flows back to fuel tank through port 4, does not have pressure to be applied on lock, and braking implemented by lock, and motor is stopped.Should also can be used in emergency circumstances brake motor by " brake guide " signal, namely stop being somebody's turn to do " brake guide " signal, lock can not get hydraulic pressure supply, implements brake immediately to motor.
Motor braking integrated package as shown in Figure 6 also comprises the integrated package main body 430 of being processed by a monoblock aluminium.This integrated package main body 430 inside is processed with connecting passage, the Placement according to Fig. 5, is communicated with corresponding passage and valve, and this body surfaces offers the various connecting ports needed for this braking integrated package.Wherein in the present embodiment, the port of connecting direction control valve 422, pressure relief valve/reduction valve 424, sequence valve 426 is arranged on an upper (shown in Fig. 6), and the port connecting selector valve 428 is arranged on (shown in Fig. 7) on a rear side surface.Those skilled in the art can understand, and according to the difference being communicated with design, port can be arranged on different surfaces.
Fig. 8 to Figure 11 show in more detail the design of this integrated package main body.Fig. 9 and Figure 10 shows six expansion views of integrated package main body, also show the layout of the inside connecting passage be illustrated by the broken lines in Figure 10.The port that this integrated package body surfaces is arranged is respectively shown in Figure 9, Figure 11 be along Figure 10 E ?the sectional view in E direction, which show a design example of port along this cross section and inner passage.Can see from this figure, sequence valve port has the passage be connected with test port A (901) with selector valve, also has the passage be communicated with reduction valve.
Integrated package main body is opened and is also provided with test port, for testing each valve before being loaded into hydraulic control system or before injection head work.It has test port A (901), test port B (902) and test port C (903), test port A (901) is connected with reduction valve with sequence valve, test port B (902) is connected with position control valve with reduction valve, test port C (903) is connected with selector valve with sequence valve, and whether four valves tested on motor braking integrated package are working properly.In addition selector valve 428 has two ports to be also connected with an equilibrium valve respectively, be set to input port A ?2 (904) and input port B ?2 (905).Integrated package main body and " lower oil pipe " and " oil pipe " hold the port of UNICOM be also called input port A ?1 (906) and input port B ?1 (907).
In addition, this motor braking integrated package also has multiple little via hole, and these perforates use in order to the passage of process block inside.For making inner two or more port or expanding channels, need to internal drilling from integrated package surface, by passage UNICOM.Via hole such as shown in Figure 11 is exactly to the sequence valve and reduction valve that are positioned at integrated package neutral position be coupled together, Cai inwardly make a call to a through hole from surface, simultaneously through the interface of these two valve passages, connects.After machining, then with the port sealing of stopper by these via holes, the fluid of its inside during work is not leaked out.
In order to simplify the line arrangement of hydraulic control device further, except motor braking integrated package, the integrated package controlling other valves can also be set, such as, the equilibrium valve integrated package 440 that the equilibrium valve that two are connected to motor is integrated, as shown in figure 12, this equilibrium valve integrated package 440 comprises equilibrium valve integrated package main body 442 and mounted thereto two equilibrium valves 404.Equilibrium valve integrated package main body 442 is generally the hexahedron that aluminium is made, and on it except having the port of connection two equilibrium valves, be also processed with each port being connected to " playing oil pipe " and " lower oil pipe " and motor etc., inside is processed with the passage connecting each port.In the present embodiment, equilibrium valve 404 is arranged on upper surface and the lower surface of equilibrium valve integrated package main body 442 respectively, front surface is provided with the port being connected to " playing oil pipe " and " lower oil pipe ", and equilibrium valve is connected to each motor in addition and its interconnective port is separately positioned on front surface and two sides.Figure 13 and Figure 14 shows six expansion views of equilibrium valve integrated package main body, and Figure 14 dotted portion shows the design of equilibrium valve integrated package body internal passageway.To brake integrated package main body similar with motor, and this equilibrium valve integrated package main body is also provided with via hole 444, and for secondary process to connect inner passage, after machining, these via holes lead to outside port again by plug seal.
In addition, as mentioned above, hydraulic control device of the present utility model also controls by hydraulically powered gravity sensor locking device 490.With reference to Figure 15 to Figure 18, this gravity sensor locking device is described in detail.Gravity sensor locking device of the present utility model comprises two identical gravity sensor supporting components 481, under two side plate 600a and 600b that they are arranged on injection head body frame respectively (Figure 15 only shows one of them), in figure, also show the hydraulic connecting panel 500 be arranged on injection head base simultaneously.Gravity sensor locking device 490 also comprises instrument 483, accumulator 485 and a hand control valve 487 of hydraulic pressure in two locked cylinders 480, display pipeline, and each locked cylinder drives a gravity sensor supporting component 481 respectively.
Before injection head needs transport, by applying hydraulic pressure from " gravity sensor locking " port connecting panel, drive locked cylinder 480, piston is stretched out, promote supporting component 481, the body frame of injection head is lifted, does not have gravity to be applied on gravity sensor.Now, close hand control valve 487, cut off the connection of external hydraulic source and locked cylinder 480, the hydraulic pressure in locked cylinder 480 and hydraulic pipe line remains in pipeline by accumulator, and gravity sensor does not work, and is namely locked.Then, the hydraulic line being connected to this gravity sensor locking device can be disconnected, no longer need to connect any external hydraulic source to provide power, injection head at this moment can by independent transport.When injection head is transported to working site, when work is carried out in preparation, after external hydraulic pipeline being reconnected to " gravity sensor locking " and " gravity sensor lock unclamps " each port, open hand control valve 487, hydraulic pressure is applied by " gravity sensor lock unclamps " end, the piston of locked cylinder 480 is retracted, again drive supporting component 481, make it be moved back, the injection head body frame that it supports also moves down thereupon, the gravity of injection head will act on gravity sensor, makes gravity sensor work, i.e. lockout.
Figure 17 and Figure 18 shows the details of supporting component 481 and coupled locked cylinder 480, and this supporting component comprises promotion wedge-shaped blocks 482, driven wedge-shaped blocks 484 and adjustment bolt 486.Be preferably, the pistons end of gravity sensor locked cylinder 480 has the screw thread engaged with promotion wedge-shaped blocks 482, wedge-shaped blocks 482 can be screwed on piston, be fixed as one, moving back and forth of such piston, drives promotion wedge-shaped blocks 482 to move together.Under driven wedge-shaped blocks 484 is arranged on injection head body frame, the utility model adopts the mode of welding to be fixed in body frame 600 times, and those skilled in the art can understand, and other known modes can be adopted to be fixed.Like this, when promoting wedge-shaped blocks 482 and moving horizontally under the piston actuated of oil cylinder 480, promote the upper surface of wedge-shaped blocks 482 contact with the lower surface of driven wedge-shaped blocks 484 and engage, thus promote driven wedge-shaped blocks and move up and down, and then drive whole injection head body frame raise or reduce.When injection head will be transported, only need the gravity sensor lock-switch on operation system control panel, start gravity sensor locked cylinder, promote wedge-shaped blocks 482 and move forward, promotion wedge-shaped blocks 482 promotes driven wedge-shaped blocks 484 again and moves up, the injection head body frame be fixed as one with it is driven to move up, make injection head body frame higher than gravity sensor, the weight of injection head just acts on two wedge-shaped blockss, instead of on gravity sensor 700, like this, gravity sensor is just locked.When injection head is transported to working site, start gravity sensor lock trip switch, gravity sensor locked cylinder piston is retracted, promotion wedge-shaped blocks 482 is driven to withdraw, the injection head body frame decline making driven wedge-shaped blocks and be fixed as one with it, the weight of such injection head will be applied on gravity sensor, and gravity sensor lockout, enters working state.
In the present embodiment, be preferably, oil cylinder 480 is fixed on the support 488 of a L shape, promotes wedge-shaped blocks 482 simultaneously and is support by base plate 492.This supporting component also has two side plate 494a and 494b, and be arranged on two plastics guide plate 496a and 496b of these two side wall inner surfaces respectively, promotion wedge-shaped blocks 482 is clipped in wherein, such promotion wedge-shaped blocks is all defined in motion that is upper and lower and two side surface direction, can only move along horizontal fore-and-aft direction.In addition, adjustment bolt 486 is screwed to of being fixed together with side plate and/or base plate and adjusts on plate 498, by bolt being screwed into or retreating, can adjust the highest distance position limiting and promote wedge-shaped blocks 482 substantially horizontal and move to, in Figure 18, the driven wedge-shaped blocks 484 of a position and the restriction of this position that dotted portion schematically show adjustment bolt is by the extreme higher position boosted.
Although the piston of locked cylinder is when stretching out in the present embodiment, will gravity sensor be locked, when piston is retracted, lockout, piston it will be understood by those skilled in the art that by the design contrary to wedge-shaped blocks inclined-plane, when can be made to retract, locking gravity sensor, when piston stretches out, lockout.
Although embodiment above describes hydraulic braking integrated package and equilibrium valve integrated package two hydraulic manifold blocks, the utility model is not limited to the design of these two integrated packages, those skilled in the art can understand, can as required to the quantity of integrated package, on it, the layout of valve and the passage of body interior carry out different designs.
The utility model embodiment illustrates only a kind of design connecting panel terminal port, it will be appreciated by those skilled in the art that and according to the requirement of the size of panel, shape and port, can carry out different designs.In addition " " clamping of port to three clamping cylinders controls simultaneously to apply clamping connection panel only to devise one, but, it will be appreciated by those skilled in the art that and the port that three, upper, middle and lower apply clamping also can be set respectively on panel, three clamping cylinders are controlled respectively.
With reference to accompanying drawing, embodiment of the present utility model is described in detail although above, has it will be appreciated by those skilled in the art that any change or change are no more than the protection domain of additional claim.
Claims (12)
1. a coiled tubing injection head hydraulic system, comprise: fuel tank, oil pump, system control panel, to be arranged in injection head for controlling the hydraulic control device of injection head moving element and being arranged at the connection panel be connected with system control panel by hydraulic control device in injection head, it is characterized in that:
Described hydraulic control device comprises the motor braking integrated package being controlled the running of injection head oil hydraulic motor by lock, and this motor braking integrated package comprises an inside and is processed with the integrated package main body that connecting passage and surface are provided with connecting port and the position control valve, reduction valve, sequence valve and the selector valve that are arranged in this integrated package main body; Described valve is connected by the passage in integrated package main body, and one-tenth is integrated, and is arranged in the oil hydraulic circuit of motor; When applying brake guide's hydraulic pressure by system control panel to motor braking integrated package, hydraulic pressure is applied on lock by motor braking integrated package, and lock discharges, and does not apply braking to oil hydraulic motor; When cancelling to motor braking integrated package applying brake guide's hydraulic pressure, not having hydraulic pressure to be applied on lock by motor braking integrated package, thus making lock apply braking to motor, motor is stopped.
2. coiled tubing injection head hydraulic system according to claim 1, is characterized in that:
Described junction surface strip has the lower tubing pressure of display, plays the instrument of tubing pressure, the pressure applying clamping, chain tension pressure, motor displacement and brake pressure.
3. coiled tubing injection head hydraulic system according to claim 2, is characterized in that:
The front surface connecting panel is provided with the interface be connected with the hydraulic line from system control panel, and the rear surface connecting panel is provided with the interface be connected with the pipeline of the hydraulic control device from injection head; These interfaces comprise brake pressure, brake guide, motor displacement, applying clamping, unclamp clamping, chain greasisng, chain tension, blowout prevention box lubrication, blowout prevention box is opened, blowout prevention box closes, gravity sensor locks, gravity sensor lock unclamp and fuel tank reflux.
4. according to claim 1 ?3 coiled tubing injection head hydraulic systems described in any one, it is characterized in that:
Described motor braking integrated package include be connected to lock port, be connected to and connect the fuel tank backflow on panel, pilot port of braking, be connected to the port of lower oil pipe instrument and an oil pipe instrument; In addition, system control panel is provided with operating switch, selectively apply to brake pilot port or cancel hydraulic pressure, the brake guide hydraulic pressure applied is applied to a port of position control valve, it starts position control valve, make to flow through selector valve, sequence valve, reduction valve the fluid of setting pressure scope flow to lock by this position control valve, lock is discharged.
5. coiled tubing injection head hydraulic system according to claim 4, is characterized in that:
Described integrated package main body comprises three test ports further, first test port is connected with reduction valve with position control valve, second test port is connected with sequence valve with reduction valve, and the 3rd test port is connected with selector valve with sequence valve, whether is working properlyly used for testing these four valves.
6. coiled tubing injection head hydraulic system according to claim 5, is characterized in that:
Described integrated package main body comprises via hole further, for connecting the passage of integrated package body interior; After machining, via hole leads to outside port by plug seal.
7. coiled tubing injection head hydraulic system according to claim 6, is characterized in that:
Oil pump comprises an enclosed oil pump and an open type oil pump, and enclosed oil pump provides power for oil hydraulic motor; Open type oil pump is for providing power for applying the clamping cylinder of clamping force, chain tension oil cylinder, blowout prevention box oil cylinder and gravity sensor locked cylinder to coiled tubing.
8. coiled tubing injection head hydraulic system according to claim 7, is characterized in that:
Described hydraulic system comprises velocity fuse and accumulator further, accumulator is connected between velocity fuse and clamping cylinder, the other end of velocity fuse is connected to " applying clamping " interface connected on panel, when hydraulic system occurs unexpected, if when the rate of flow of fluid flowing through velocity fuse is higher than a preset flow rate, velocity fuse is closed, liquid is stoped to flow to clamping cylinder further, now, clamping cylinder provides hydraulic pressure by accumulator, continues to implement clamping function.
9. coiled tubing injection head hydraulic system according to claim 8, is characterized in that:
Gravity sensor locking device comprises the instrument of hydraulic pressure at least one locked cylinder, a display pipeline, an accumulator and a control valve, and at least one gravity sensor supporting component; Described sensor support assembly is positioned at by gravity sensor, and supports injection head body frame; When needs locking gravity sensor, drive locked cylinder piston to stretch out, promote supporting component drive injection head body frame moves, do not have gravity to be applied on gravity sensor, gravity sensor is locked; Now, closed control valve, cut off the hydraulic pressure supply from external hydraulic source to locked cylinder, the hydraulic pressure of locked cylinder is kept by accumulator; Then, disconnect the hydraulic line of this gravity sensor locking device, injection head departs from hydraulic line can by independent transport; When injection head prepares to carry out work, hydraulic line is reconnected to this gravity table locking device, open control valve, locked cylinder is communicated with external hydraulic source again, the piston of locked cylinder is retracted, and cause supporting component to drive injection head body frame to move down, the Action of Gravity Field of injection head is on gravity sensor, gravity sensor works, and namely weighing transducer lock unclamps.
10. coiled tubing injection head hydraulic system according to claim 9, is characterized in that:
Described supporting component comprises of being fixedly connected with the piston of locked cylinder and promotes wedge-shaped blocks, and promotes wedge-shaped blocks and engages and the driven wedge-shaped blocks be fixed as one with the body frame in injection head and adjust bolt; The sphenoid surface promoting wedge-shaped blocks upper surface engages with the sphenoid surface of driven wedge-shaped blocks lower surface, when promoting wedge-shaped blocks and moving horizontally under the driving of gravity sensor locked cylinder, promoting driven wedge-shaped blocks drives injection head body frame to move up and down, thus body frame is lifted or declines, depart from or engage gravity sensor, with this, gravity sensor being in and not working or working state; Adjustment bolt is used for adjusting the highest distance position promoting wedge-shaped blocks substantially horizontal and move to.
11. coiled tubing injection head hydraulic systems according to claim 10, is characterized in that:
Gravity sensor supporting component comprises the L bracket of supporting heavy force snesor locked cylinder further, support the base plate promoting wedge-shaped blocks, two restrictions promote the flanking plastic guide plate of wedge-shaped blocks lateral movement, and the adjustment plate of adjustment bolt is installed, adjustment bolt can be screwed into forward and to draw back adjustment position through adjustment plate.
12. coiled tubing injection head hydraulic systems according to claim 11, is characterized in that:
Comprise an equilibrium valve integrated package be connected with two injection head oil hydraulic motors further, each equilibrium valve integrated package comprises an equilibrium valve integrated package main body and mounted thereto two equilibrium valves; Except having the port of connection two equilibrium valves in equilibrium valve integrated package main body, also be processed with each port being connected to " playing oil pipe " and " lower oil pipe " and motor etc., its inside is processed with connecting passage, and each port couples together by the requirement according to hydraulic control device; This equilibrium valve integrated package main body also comprises via hole, and for secondary process to connect the passage of integrated package body interior, after machining, via hole leads to outside port by plug seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420627987.5U CN204357814U (en) | 2014-10-27 | 2014-10-27 | Coiled tubing injection head hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420627987.5U CN204357814U (en) | 2014-10-27 | 2014-10-27 | Coiled tubing injection head hydraulic system |
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| Publication Number | Publication Date |
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| CN204357814U true CN204357814U (en) | 2015-05-27 |
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| CN201420627987.5U Expired - Fee Related CN204357814U (en) | 2014-10-27 | 2014-10-27 | Coiled tubing injection head hydraulic system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905890A (en) * | 2018-09-14 | 2020-03-24 | 湖南双达机电有限责任公司 | Cylinder control circuit and coiled tubing injector tower |
| CN115234531A (en) * | 2022-09-22 | 2022-10-25 | 山东威盟石油机械有限公司 | Injection head hydraulic system |
-
2014
- 2014-10-27 CN CN201420627987.5U patent/CN204357814U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905890A (en) * | 2018-09-14 | 2020-03-24 | 湖南双达机电有限责任公司 | Cylinder control circuit and coiled tubing injector tower |
| CN115234531A (en) * | 2022-09-22 | 2022-10-25 | 山东威盟石油机械有限公司 | Injection head hydraulic system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20151027 |
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| EXPY | Termination of patent right or utility model |