CN201753593U - Outer hanged type hydraulic control box of blowout preventer - Google Patents

Abstract

An outer hanged type hydraulic control box of blowout preventer is mainly composed of the following components: an energy accumulator, a pressure gauge, a straightway check valve, a reversing valve, a ball valve, etc. A pressure source of a well minding device and hydraulic oil are utilized. A special three-phase power source or air source for matching with the control box is not required. The opening and closing of the wellhead hydraulic blowout preventer is remotely controlled. A miniature remote control device of blowout preventer is provided for the small scale well mending operation, wherein the miniature remote control device of blowout preventer has the following advantages: high safety, high speed, high reliability, high matching performance, no requirement of electric control, small size, high portability and simple operation.

Description

External hanging type preventer hydraulic control case

Technical field

The utility model relates to a kind of oil field well control device, especially external hanging type preventer hydraulic control case.

Background technology

At present, the employed well control device of oil field shaft mouth operation mostly is the hydraulic blow out preventer of controlling with hydraulic pressure greatly, and this well control device is interconnected to constitute by high pressure line by wellhead blowout preventor and control system of ground preventer; Control system of ground preventer is the visual plant of control wellhead blowout preventor, also claims remote console, and it connects preventer by high-pressure oil pipe, executes the control preventer by the hydraulic oil in its high-pressure oil pipe; Remote console is made up of base, fuel tank, pump group, accumulator group, manifold, various valve member, instrument and electric control box, its major function is, produce high voltage control liquid by the pump group, and be stored in the accumulator group, when needs open and close preventer, be assigned in each control object (preventer) from the high voltage control liquid of accumulator group 3-position 4-way rotary valve by manifold; Its pump assembly has two to overlap independently power source, be electric oil pump and hand oil pump, the accumulator group has enough highly pressurised liquids to hold fully, satisfy the control requirement of closing whole blowout preventer set and opening the requirement of hydraulic operated valve, the control device that electric oil pump has automatic startup, stops, the open and close action of each preventer is by corresponding 3-position 4-way rotary valve control; The standby pressure source interface is arranged on the control manifold of remote console, can introduce pressure source when needed; Hydraulic line has two kinds of hard tube line and soft pipelines, generally uses soft pipeline, and the two ends of soft pipeline are the snap joint of self-sealing, realizes being connected of remote console and preventer; Warning device is installed on the remote console, to energy storage pressure, bleed pressure, the running of oil tank liquid level and electric oil pump monitors, when above-mentioned parameter exceeds the alarm limit of setting, can be on remote console be spoken, visual alarm, the indication operating personnel take measures, and it can be reported to the police when energy storage pressure is low, report to the police when oil tank liquid level is low and electric oil pump turns round and reports to the police when undesired; Fixing electric control box on remote console, the motor that connects remote console is installed on the electric line of electric control box, motor connects oil pump, when motor rotates, the drive oil pump rotates, by going into oil pipe, the oil in the fuel tank is sucked, and pressurization is transported in the accumulator group by flowline, going into oil pipe one end is fastened on the fuel tank, the other end is fastened on the oil pump oil-in, and flowline one end is fixedly connected on the oil-out of oil pump, and the other end connects check valve inlet, the one way valve outlet connects oil pipe one end, it connects the oil pipe other end and connects the accumulator group, like this when oil pump rotates, pressure oil through one way valve to accumulator group fuel feeding; Install on the electric control box and connect pressure controller, when system pressure reaches certain setting value, pressure controller is cut off the electricity supply automatically, make the electric oil pump fuel cut-off, when system pressure step-down certain value, the electric oil pump work of can resetting automatically, the pressure of accumulator group is remained in certain scope, at any time can open or close for the operation preventer, the accumulator group is by oil pipe connection isolating valve, overflow valve, connect control manifold again, its manifold connects the oil-in of 3-position 4-way rotary valve, as long as pull corresponding 3-position 4-way rotary valve handle like this, make and to realize " opening ", the operation of " pass " preventer, like this, the pressure oil that is stored in the accumulator group passes through accumulator isolation valve, oil filter, again through after the decompression of decompression overflow valve, enter control manifold, to each 3-position 4-way rotary valve oil-in, used 3-position 4-way rotary valve (liquid rotary valve) on the remote console is " O " type function, the rotating valve handle " in " when position, each chamber does not communicate, and when handle is in " opening " position formula " pass ", along with pressure oil enters an end of oil cylinder in the preventer, the fluid of the other end makes through 3-position 4-way rotary valve oil sump tank; The accumulator group is generally the structure that a plurality of bladder type hydropneumatic accumulators interconnect, its bladder type hydropneumatic accumulator plays storage power in hydraulic system, steady pressure, reduce power consumption, compensation is leaked and is oozed, multiple effects such as absorption pressure pulsating force and mitigation impact force, it is supported on the carriage of remote console securely, it is by shell, capsule and charge valve and hydraulic fluid port are formed, shell has charge valve on the top, charge valve connects the capsule in the shell cavity, there is hydraulic fluid port the shell lower end, hydraulic fluid port connects in the shell, charge into gas in its capsule, be generally nitrogen, several bladder type hydropneumatic accumulators connect combines formation accumulator group, and the nitrogen in its capsule has certain pressure, when hydraulic oil enters in the shell by hydraulic fluid port, compress capsule, make the pressure rises of the nitrogen in the capsule, the pressure of its hydraulic oil rises to certain amplitude, on the contrary when using accumulator, because the hydraulic oil in the compressing of the High Voltage in the capsule shell, oil is had necessarily pressure, can outwards push by hydraulic fluid port, by oil pipe pressure oil is transported to certain position, and electric oil pump is started working, and makes its pressure oil remain certain pressure, thus the control preventer; Preventer is a kind ofly to design because of taking precautions against gas blowout accident, device that can timely safe closing well after well kick takes place, it is mainly by housing, switch valve leaf fat cylinder assembly, the flashboard assembly, the side door assembly, the manual locking leading screw, the oil inlet and oil return mouth is formed, it has the blind rams structure, half envelope flashboard structure is also arranged, or blind rams and partly seal the flashboard structure combining, primary structure is, the flashboard cavity of its housing is Long Circle in vertical longitudinal cross-section, side door itself is connected with housing by the side door bolt, cylinder cap, switch flashboard fluid cylinder, be fixed together by fluid cylinder connecting bolt and side door, the flashboard assembly hangs over switch flashboard liquid cylinder piston bar front end, adopts y-shaped ring to realize two way seal between side door and the switch flashboard fluid cylinder; Sealing device between piston rod and the side door is divided into two parts, a part is that sealed well is pressed, a part is the oil pressure that the sealing hydraulic control produces, twice sealing mechanism is between this two department, generally speaking, for the sealing that makes this place very reliable, the sealing ring that multiplet is arranged, and the auxiliary seal of middle O-ring seals, when the hydraulic control system hydraulic oil enters left and right sides fluid cylinder flashboard and closes the chamber, promoting piston drive left and right sides flashboard assembly moves to the well head center respectively along housing flashboard chamber, realize shut-in well, when high pressure oil wells is gone into fluid cylinder flashboard unlatching chamber, the left and right sides, promote piston and drive left and right sides flashboard assembly to leaving the motion of well head center position, open well head, the flashboard switch is controlled by the hydraulic control system reversal valve; It is weighlock plate preventer again, and it can seal well head so effectively by sealing everywhere, be being tightly connected of sealing of flashboard top and housing, before the flashboard sealing and pipe and before sealing each other be tightly connected being tightly connected between housing and side door, being tightly connected between piston rod and side door; But traditional hydraulic blow out preventer control device complex structure is bulky, also needs special-purpose three phase mains or source of the gas supporting with it, has brought certain degree of difficulty for the popularization of hydraulic pressure preventer in the underground work light maintenance construction like this.

Summary of the invention

The purpose of this utility model provides a kind of external hanging type preventer hydraulic control case, for small-sized workover treatment provides a cover safety, fast, reliably reaches supporting automatically controlled, the light and handy small-sized preventer remote control nimble, simple to operate that need not.

Owing to adopt technique scheme, its external hanging type preventer hydraulic control case not only provides a cover safety, fast, reliably reaches supporting automatically controlled, the light and handy small-sized preventer remote control nimble, simple to operate that need not for small-sized workover treatment, and it is simple in structure, easy to use.

Description of drawings

Below in conjunction with embodiment the utility model external hanging type preventer hydraulic control case is described further;

Accompanying drawing is the hydraulic system structure connection layout of the utility model external hanging type preventer hydraulic control case;

Among the figure: 1, system's drain charge valve 2, accumulator 3, accumulator operating valve 4, tubular type one way valve 5, connect workover rig pressure port 6, hydraulic tongs operating switch valve 7, pressure limiting overflow valve 8, connect workover rig oil return opening 9, connect hydraulic tongs oil-in 10, O type spring reset hand-operated direction valve 11, connect hydraulic tongs oil return opening 12, stacking type hydraulic control check valve 13, pressure meter 14, take over control spray apparatus and close interface 15, preventer 16, preventer closes hydraulic fluid port 17, high-pressure oil pipe 18, hydraulic fluid port 19 left by preventer, take over control spray apparatus and open interface 20, preventer

The specific embodiment

Claims (3)

1. external hanging type preventer hydraulic control case, it is the control device of Long-distance Control hydraulic blow out preventer switch, between it and the hydraulic blow out preventer, connect by high pressure line, its hydraulic blow out preventer is a kind ofly to design because of taking precautions against gas blowout accident, device that can timely safe closing well after well kick takes place, preventer is the ram preventer structure, its center is main latus rectum structure, and a left side, each internal structure of right structure on two sides, specification is identical, corresponding one by one between each parts of each parts and the right side structure of left side structure, its corresponding components shape, size, specification is identical, the left side structure is connected with main latus rectum structure relatively symmetrically with the right side structure, preventer is by housing, port connection, cylinder head, cylinder tube, side door, flashboard, sealing before the flashboard, the top sealing, piston, flashboard locking screw mandrel, cylinder nut, control oil cylinder bolt, the side door bolt constitutes; Dress flashboard in the ram block chamber, it is a flashboard structure, it is mainly by housing flashboard chamber switch valve leaf fat cylinder assembly, the flashboard assembly, the manual locking leading screw, the oil inlet and oil return mouth is formed, the left and right sides of housing has respectively with housing center master's latus rectum and communicates, an and heart master latus rectum left side therein, right both sides, the flashboard chamber that symmetrical shape and structure specification is identical, the flashboard chamber is Long Circle in vertical longitudinal cross-section, side door itself is connected with housing by the side door bolt, cylinder cap, switch flashboard fluid cylinder, be fixed together by fluid cylinder connecting bolt and side door, the flashboard assembly hangs over switch flashboard liquid cylinder piston bar front end, adopts y-shaped ring to realize two way seal between side door and the switch flashboard fluid cylinder; Sealing device between piston rod and the side door is divided into two parts, a part is that sealed well is pressed, a part is the oil pressure that the sealing hydraulic control produces, twice sealing mechanism is between this two department, for the sealing that makes this place very reliable, the sealing ring that multiplet is arranged, and the auxiliary seal of middle O-ring seals, when the hydraulic control system hydraulic oil enters left and right sides fluid cylinder flashboard and closes the chamber, promoting piston drive left and right sides flashboard assembly moves to the well head center respectively along housing flashboard chamber, realize shut-in well, when high pressure oil wells is gone into fluid cylinder flashboard unlatching chamber, the left and right sides, promote piston and drive left and right sides flashboard assembly to leaving the motion of well head center position, open well head, the flashboard switch is controlled by the hydraulic control system reversal valve; When closing flashboard, it is by sealing everywhere, can seal well head effectively like this, be being tightly connected of sealing of flashboard top and housing, before the flashboard sealing and pipe and before sealing being tightly connected each other, being tightly connected between housing and side door makes the inside and outside both sides formation of its oil tube inner carrier flashboard unlatching chamber, flashboard close the chamber; The sealing of flashboard is such, the one, packing unit crimp sealing is anterior before hydraulic oil effect lower piston rod promotes flashboard, interference compression seal top between top packing unit and housing, thereby realization initial sealing, the 2nd, when in well, pressure being arranged, well is pressed and to be promoted the further crimp of sealing before the flashboard from the flashboard rear portion, and well is pressed and promoted the flashboard come-up from the bottom and be adjacent to sealing surface on the housing simultaneously, thereby forms sealing reliably; There is certain clearance flashboard assembly and flashboard chamber, allow flashboard in the housing chamber, to fluctuate, in order to guarantee to seal between tubing string reliably in flashboard and the well, the front end of flashboard has outstanding mutually guide pad, it can insert in the groove of opposite flashboard, the guide pad inclined-plane produces certain centripetal thrust force to well casing under the tubing string situation not placed in the middle in the well when closing well like this, makes in the well tubing string shift to the well head center; The oilhole of its side door has two, for the control flashboard is opened oil circuit hole and oil circuit hole, control flashboard pass, its each oil circuit hole is independent separately, its oil circuit hole collar extension is positioned at the outer casing frontispiece outside, internal orifice is respectively two, it lays respectively at the outside of the one side that shell and side door join, and internal diameter equates with side door oil circuit mouth internal diameter, each oil circuit inn is corresponding with coupled the oil circuit mouth specification and the position of its corresponding side door that links to each other respectively, the port connection that each oil circuit collar extension of its shell is fixedly connected respectively, promptly it connects the control flashboard respectively and opens port connection, the control flashboard closes port connection; An oil circuit is arranged in the cylinder head wall, and one hydraulic fluid port and cylinder tube hydraulic fluid port join, and another hydraulic fluid port leads in the cylinder barrel; Its cylinder head oilhole feeds cylinder barrel, its each parts respectively according to program successively install connect complete, its preventer forms two separate complete oil circuits, its control flashboard is opened two internal orifices that oil circuit opens oil circuit by shell control flashboard and is connected two side door oil circuits respectively, its side door oil circuit mouth is directly uncovered to the oil tube, the control flashboard closes oil circuit and connects the side door oil circuit respectively by two internal orifices that shell control flashboard closes oil circuit, its side door oil circuit connects oil tube oil circuit again, oil tube oil circuit connects the cylinder head oil circuit again, in the uncovered feeding oil of its cylinder head oil circuit mouth tube, all there is rubber seal to connect between its each oil circuit interface, make tight seal between each oil circuit, shell, side door, cylinder barrel, all there is sealing ring to connect between each parts of cylinder head, make its tight seal, its preventer is opened port connection, preventer pass port connection is connected and fixed of bend pipe respectively, its bend pipe other end connects of high-pressure oil pipe by the oily ninth of the ten Heavenly Stems, the other end of its high-pressure oil pipe is fastened on the hydraulic fluid port corresponding with it of external hanging type preventer control cabinet its bend pipe by oil the ninth of the ten Heavenly Stems, port connection, the oily ninth of the ten Heavenly Stems, high-pressure oil pipe, control device is imported and exported and is the tight seal connection between each parts; And external hanging type preventer hydraulic control case and all seals of preventer, and high-pressure oil pipe is high temperature resistant material and makes; Its hydraulic blow out preventer is to be connected with external hanging type preventer hydraulic control case by high pressure line, implement the hydraulic blow out preventer switch is controlled by external hanging type preventer hydraulic control case, its external hanging type preventer hydraulic control case connects preventer by high-pressure oil pipe, executes the control preventer by the hydraulic oil in its high-pressure oil pipe; Control cabinet is made up of casing, accumulator, manifold, various valve member, instrument, its major function is, by producing high voltage control liquid by workover rig and hydraulic tongs, and be stored in the accumulator, when needs open and close preventer, be assigned in each control object (preventer) from the high voltage control liquid of accumulator 3-position 4-way rotary valve by manifold; Accumulator has enough highly pressurised liquids to hold fully, satisfy the control requirement of closing preventer and opening the requirement of hydraulic operated valve, hydraulic line has two kinds of hard tube line and soft pipelines, the two ends of its soft pipeline are the snap joint of self-sealing, realization hydraulic control case is connected with preventer, accumulator is the bladder type hydropneumatic accumulator structure, bladder type hydropneumatic accumulator plays storage power in hydraulic system, steady pressure, reduce power consumption, compensation is leaked and is oozed, multiple effects such as absorption pressure pulsating force and mitigation impact force, it is supported on the casing carriage of hydraulic control case securely, it is by housing, capsule and charge valve and hydraulic fluid port are formed, housing has charge valve on the top, charge valve connects the capsule in the housing cavity, there is hydraulic fluid port the shell lower end, hydraulic fluid port connects in the shell, charge into gas in its capsule, be generally nitrogen, nitrogen in its capsule has certain pressure, when hydraulic oil enters in the shell by hydraulic fluid port, and the compression capsule, make the pressure rises of the nitrogen in the capsule, the pressure of its hydraulic oil rises to certain amplitude, on the contrary when using accumulator, because the hydraulic oil in the compressing of the High Voltage in the capsule shell, make oil have certain pressure, can outwards push by hydraulic fluid port, pressure oil is transported to certain position by oil pipe, thus the control preventer; External hanging type preventer hydraulic control case directly with on the workover rig is used for being connected output oil port (advance, the oil return opening) connection of hydraulic tongs, need not carry out any transformation to workover rig, only need hydraulic tongs is connected on the corresponding interface of hydraulic control case just, its structure is mainly by casing, accumulator, and pressure meter, straight check valve, reversal valve, ball valve and oil pipe constitute; It is characterized in that: install and fix respectively on the casing of external hanging type preventer hydraulic control case and connect the workover rig pressure port, connect well workover mouth oil return opening, connect the hydraulic tongs oil-in, connect the hydraulic tongs oil return opening, it connects the workover rig pressure port, connect the workover rig oil return opening, connect the hydraulic tongs oil-in, connect hydraulic tongs oil return opening fixedly connected oil pipe respectively, the oil pipe that its connection connects the hydraulic tongs oil return opening be connected the oil pipe that connects the workover rig pressure port and be connected, and be connected with the 3rd oil pipe, install on its 3rd oil pipe and connect the tubular type one way valve, and connect the workover rig oil return opening and connect the hydraulic tongs oil return opening connection oil pipe is installed respectively, its two oil pipe is connected and is connected with other the 3rd oil pipe, another interface of one way valve connects accumulator and O type spring reset hand-operated direction valve one interface by oil pipe respectively, it connects workover rig oil return opening oil pipe and connection and connects other the 3rd oil pipe that hydraulic tongs oil return opening oil pipe interlinks and connect another interface of O type spring reset hand-operated direction valve with being connected, two other interface of O type spring reset hand-operated direction valve is installed respectively and is connected two oil pipes, its two oil pipe respectively with take over control spray apparatus and open, the pass interface connects, and the hydraulic control case connect the workover rig pressure port, connect the workover rig oil return opening, connect the hydraulic tongs oil-in, it is corresponding to respectively the oil ninth of the ten Heavenly Stems and high-pressure oil pipe connection workover rig pressure port to connect the hydraulic tongs oil return opening, the workover rig oil return opening, the hydraulic tongs oil-in, the hydraulic tongs oil return opening.

2. external hanging type preventer hydraulic control case according to claim 1, it is characterized in that: its with the oil pipe that is connected that connects the hydraulic tongs oil-in on fixedly connected ball valve be hydraulic tongs operating switch valve, its with the 3rd oil pipe that connects that workover rig pressure port oil pipe and connection connect that hydraulic tongs oil-in oil pipe links to each other with connect workover rig oil return opening oil pipe and connection and connect between other the 3rd oil pipe that hydraulic tongs oil return opening oil pipe links to each other with being connected by oil pipe installation connection pressure limiting overflow valve, on the oil circuit between its pressure limiting overflow valve and the one way valve, fixedly mount pressure meter, install on the oil pipe that is connected accumulator on the oil circuit between accumulator and the tubular type one way valve and connect ball valve and promptly control accumulator and open, the accumulator operating valve of pass work, on the oil circuit between accumulator and its operating valve, install and be connected pressure meter, an other oil circuit is arranged on the accumulator, its oil circuit communicates with oil circuit between accumulator and the tubular type one way valve, and mounting ball valve is system's drain charge valve on this oil circuit.

3. external hanging type preventer hydraulic control case according to claim 1, it is characterized in that: its O type spring reset hand-operated direction valve with take over control spray apparatus and open, close on the oil circuit of interface connection, install and connect stacking type hydraulic control check valve, and setting pressure table, and the oil circuit of preventer is connected with oil circuit in the hydraulic control case by high-pressure oil pipe, be that the spray apparatus of taking over control on the hydraulic control case is opened interface and connected oil ninth of the ten Heavenly Stems, a port that connects high-pressure oil pipe by oil the ninth of the ten Heavenly Stems, its preventer is opened the port connection bridge piece, the another port that connects its high-pressure oil pipe by oil the ninth of the ten Heavenly Stems, equally, the spray apparatus pass interface of taking over control on the hydraulic control case connects the oily ninth of the ten Heavenly Stems, by the oily another port that connects high-pressure oil pipe the ninth of the ten Heavenly Stems, its preventer closes hydraulic fluid port bridge piece, by connecting other end of its high-pressure oil pipe the oily ninth of the ten Heavenly Stems.

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