CN114688261A - Ultrahigh pressure safety throttle valve for testing high-pressure pump of petroleum drilling - Google Patents
Ultrahigh pressure safety throttle valve for testing high-pressure pump of petroleum drilling Download PDFInfo
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- CN114688261A CN114688261A CN202210175807.3A CN202210175807A CN114688261A CN 114688261 A CN114688261 A CN 114688261A CN 202210175807 A CN202210175807 A CN 202210175807A CN 114688261 A CN114688261 A CN 114688261A
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- 238000012360 testing method Methods 0.000 title claims abstract description 37
- 238000005553 drilling Methods 0.000 title claims abstract description 29
- 239000003208 petroleum Substances 0.000 title description 3
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 210000000476 body water Anatomy 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 abstract description 27
- 238000013461 design Methods 0.000 abstract description 11
- 230000003628 erosive effect Effects 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/44—Details of seats or valve members of double-seat valves
- F16K1/443—Details of seats or valve members of double-seat valves the seats being in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The ultrahigh pressure safety throttle valve for the oil drilling high-pressure pump test comprises a valve body assembly and a valve core assembly, wherein the valve core assembly is arranged in the valve body assembly in a sliding manner; when ultrahigh pressure fluid flows through the ultrahigh pressure throttling safety valve, the pressure born by each stage of the slit throttling conical ring and the backflow cavity is greatly reduced, so that the erosion problem of the throttling valve is greatly improved; due to the structural design of supporting and guiding at the two ends of the valve core assembly, the vibration resistance of the throttle valve is greatly improved; the structural design that gap throttle taper ring play liquid outlet side diameter is greater than liquid inlet side diameter for when the case breaks, the case also can not block up the throttle passageway, consequently can not produce impact damage to high-pressure pump and test equipment.
Description
Technical Field
The invention relates to the technical field of ultrahigh pressure valves for oil drilling and exploitation high-pressure pump tests, in particular to an ultrahigh pressure safety throttle valve for an oil drilling high-pressure pump test.
Background
The high-pressure pump for oil field drilling and exploitation needs to be subjected to a pressure test in the production process, and an ultrahigh-pressure throttle valve is used as a fluid control device in the test process to control the pressure and flow output by the high-pressure pump; with the increase of the oil exploitation depth, the output pressure of the existing high-pressure pump for oil field drilling and exploitation is up to 140MPa, when the existing high-pressure throttle valve is used alone under the high fluid pressure, the speed of fluid flowing through the high-pressure throttle valve is extremely high, so the problem of erosion of the high-pressure throttle valve is very serious, the service life of the high-pressure throttle valve and an outlet connecting pipeline thereof is very short, the high-pressure throttle valve can be replaced after being used for 2-3 months, and the cost of the high-pressure throttle valve is high, so the test cost of the oil field drilling and exploitation high-pressure pump is greatly influenced; in addition, the valve core structure of the existing high-pressure throttle valve mostly adopts single-end guide support, and the impact vibration of fluid is easily generated under the ultrahigh-pressure working condition, so that the equipment cannot normally work; and the valve core is broken due to the vibration of the high-pressure throttle valve, the broken valve core blocks a throttling channel instantly, and huge impact damage is generated on a high-pressure pump and testing equipment, so that safety accidents are easily caused.
In order to solve the problems, in the testing process of the oil field drilling and exploitation high-pressure pump, a mode of simultaneously using a plurality of high-pressure throttle valves to work in series is provided, and the throttle pressure independently borne by a single high-pressure throttle valve in the past is shared by the plurality of high-pressure throttle valves connected in series, so that the fluid speed passing through the high-pressure throttle valves is reduced, the service life of the high-pressure throttle valves is prolonged, and the vibration in the work is reduced; however, there are several problems with this approach: firstly, a plurality of high-pressure throttle valves are connected in series to work, so that the cost is extremely high; when fluid pressure and flow are regulated, a plurality of high-pressure throttle valves need to be synchronously regulated, but the working characteristics of each high-pressure throttle valve are inconsistent, so that the actual regulation and control are abnormal and difficult, and the working characteristic test result of the high-pressure pump is inaccurate; thirdly, as the number of the high-pressure throttle valves is large, the integral working reliability is poor, and equipment accidents are easy to happen; and the risk of valve core fracture still exists in the four or a plurality of high-pressure throttle valves connected in series.
Because the problems bring great troubles to the testing work of the existing oil field drilling and exploitation high-pressure pump, how to solve the problems becomes a great technical problem to be solved urgently in the field of the throttle valve for controlling the ultrahigh-pressure fluid for the oil field drilling and exploitation high-pressure pump testing.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses an ultrahigh pressure safety throttle valve for testing a high-pressure pump of petroleum drilling, which adopts a plurality of valve seats and valve cores which are designed in an overlapping way to form a multi-stage gap throttling conical ring and a backflow cavity structure which are arranged in series, so as to reduce the pressure flowing through the throttle valve step by step, correspondingly reduce the speed of fluid flowing through the throttle valve, improve the erosion problem of the throttle valve and prolong the service life of the throttle valve; the valve core assembly is designed in a structure that two ends are supported and guided, so that the rigidity of the valve core assembly is greatly improved, and the vibration resistance of the throttle valve is also greatly improved; the structural design that the diameter of the liquid outlet side of the gap throttling cone ring is larger than that of the liquid inlet side of the gap throttling cone ring ensures that when the valve core is broken, the throttling channel cannot be blocked, and on the contrary, the gap of the throttling channel can be maximized, so that the high-pressure pump and the test equipment cannot be impacted and damaged, and the running safety of the equipment is ensured; when the valve core assembly moves downwards, the gap of the gap throttling conical ring is enlarged, and the volume of the backflow cavity is kept unchanged, so that the linear flow characteristic and the large through-flow capacity of the throttling valve are ensured, and the control of the throttling valve is more convenient and accurate; the working pressure of the ultrahigh-pressure safe throttle valve for the oil drilling high-pressure pump test can exceed 140 MPa.
In order to realize the purpose, the invention adopts the following technical scheme: the ultrahigh pressure safety throttle valve for the oil drilling high-pressure pump test comprises a valve body assembly and a valve core assembly, wherein the valve core assembly is arranged in the valve body assembly in a sliding manner; the valve body assembly is fixedly provided with a plurality of valve seats in an up-down superposition mode, the valve core assembly is fixedly provided with a plurality of valve cores in an up-down superposition mode, the valve seats are matched with the valve cores to form a multi-stage serial gap throttling conical ring and a backflow cavity, the gap throttling conical ring is used for adjusting the flow of fluid flowing through the high-pressure throttling safety valve, and the backflow cavity enables the high-pressure fluid to generate a swirling vortex to attenuate the energy of the high-pressure fluid and reduce the flow rate of the high-pressure fluid; when ultrahigh-pressure fluid flows through the ultrahigh-pressure throttling safety valve, the pressure and the energy of the ultrahigh-pressure fluid are reduced step by step through the throttling of the multi-stage serial slit throttling conical ring and the backflow cavity, so that the pressure born by each stage of slit throttling conical ring and the backflow cavity is greatly reduced, the corresponding fluid speed flowing through the throttling valve is also greatly reduced, the erosion problem of the throttling valve is greatly improved, and the service life of the throttling valve is prolonged; the structural design of the supporting and guiding at the two ends of the valve core assembly greatly increases the rigidity of the valve core assembly, so that the vibration resistance of the throttle valve is greatly improved; the structural design that the diameter of the liquid outlet side of the gap throttling cone ring is larger than that of the liquid inlet side of the gap throttling cone ring ensures that when the valve core is broken, the throttling channel cannot be blocked, and on the contrary, the gap of the throttling channel can be maximized, so that the high-pressure pump and the test equipment cannot be impacted and damaged, and the running safety of the equipment is ensured; when the valve core assembly moves downwards, the gap of the gap throttling conical ring is enlarged, the volume of the backflow cavity is kept unchanged, the linear flow characteristic and the large through-flow capacity of the throttling valve are guaranteed by the structural design characteristic, the throttling valve is controlled more conveniently and accurately, and the accuracy of the working characteristic test result of the high-pressure pump is guaranteed.
Further, the valve body assembly comprises a valve body, a valve cover, an upper valve sleeve, a valve seat and an outlet valve seat; the middle of the valve body is sequentially provided with an upper valve sleeve hole, a valve body cavity, a valve seat hole and a valve body water outlet hole which penetrate through the valve body from top to bottom, and the side wall of the valve body cavity is provided with an inclined water inlet; the valve cover is fixedly arranged at the upper end part of the valve body; the upper valve sleeve is fixedly arranged in the upper valve sleeve hole, and the upper end of the upper valve sleeve is abutted against the lower end of the valve cover; the outlet valve seat is fixedly arranged on the lower end face of the valve seat hole; the disk seat is provided with a plurality of, and the fixed upper end that sets up at the export disk seat of mode from top to bottom superpose contradicts with last valve sleeve lower extreme in the disk seat upper end of top, and a plurality of disk seat is arranged in the disk seat hole.
Further, the valve core assembly comprises a valve rod, a valve core and an outlet valve core; the valve rod is in a step rod shape; the valve cores are arranged in a plurality and fixedly arranged at the lower part of the valve rod in an up-down superposition mode; the outlet valve core is fixedly arranged at the lower part of the valve core at the lowest end.
Further, the valve seat is in a short circular ring shape, a valve seat conical hole and a valve seat cavity are sequentially arranged in the middle of the valve seat from top to bottom, and the diameter of the lower part of the valve seat conical hole is larger than that of the upper part of the valve seat conical hole; the valve core is in a short circular ring shape, the upper part of the outer circle of the valve core is provided with a valve core conical surface, the lower part of the valve core conical surface is provided with a valve core ring, and the diameter of the lower part of the valve core conical surface is larger than that of the upper part; the length of a rotation line of the conical surface of the valve core is greater than that of the conical hole of the valve seat; the conical hole of the valve seat is matched with the conical surface of the valve core to form a gap throttling conical ring; the valve seat cavity is matched with the valve core ring to form a return cavity; when the ultrahigh-pressure throttling safety valve works, the valve core assembly moves downwards, the gap of the gap throttling conical ring is enlarged, and because the length of the rotation line of the conical surface of the valve core is greater than that of the conical hole of the valve seat, the effective working length of the gap throttling conical ring is only related to that of the conical hole of the valve seat, namely the effective working length of the gap throttling conical ring is kept unchanged in the process of enlarging the gap of the gap throttling conical ring, and meanwhile, the change of the gap throttling conical ring is in a linear relation with the movement stroke of the valve core assembly, and finally, the linear relation between the flow regulation of the throttling valve and the movement stroke of the valve core assembly is ensured; in addition, when the valve core assembly moves downwards, the valve core conical surface of the upper valve core enters the return cavity, and the valve core conical surface of the lower valve core exits the return cavity, so that the total volume of the return cavity is unchanged, and the throttle valve is ensured to have higher through-flow capacity all the time; if the valve rod is broken due to the erosion of high-pressure fluid at the upper valve sleeve cavity for a long time, the valve core and the lower half part of the valve rod automatically move downwards under the action of the high-pressure fluid until the step surface at the lower end of the valve rod abuts against the bottom of the valve rod avoidance hole of the outlet valve seat, the valve core and the lower half part of the valve rod stop moving until the step surface at the lower end of the valve rod abuts against the bottom of the valve rod avoidance hole of the outlet valve seat, the gap of the gap throttling conical ring reaches the maximum, the throttling valve is at the maximum throttling flow rate, the problem that the throttling channel is blocked due to the broken valve core of the existing throttling valve is solved, therefore, the high-pressure pump and test equipment cannot be impacted and damaged, and the running safety of the equipment is ensured; when high-pressure fluid flows through the gap throttling conical ring, the plurality of radial ring grooves can form a plurality of microscopic eddy currents in the gap throttling conical ring to enable the pressure of the high-pressure fluid to generate energy and attenuate, and therefore the flow rate of the high-pressure fluid is reduced.
Furthermore, the middle of the upper valve sleeve is sequentially provided with a through ultrahigh pressure combined sealing hole, a valve rod guide hole, an upper valve sleeve valve rod hole and an upper valve sleeve cavity from top to bottom, the side wall of the upper valve sleeve cavity is uniformly distributed and obliquely provided with a plurality of upper valve sleeve cavity water inlets, the oblique direction of the upper valve sleeve cavity water inlet is opposite to the oblique direction of the water inlet of the valve body, the upper valve sleeve cavity is communicated with the valve body cavity through the upper valve sleeve cavity water inlet, and the oblique direction of the upper valve sleeve cavity water inlet is opposite to the oblique direction of the water inlet of the valve body; a plurality of upper valve sleeve sealing ring grooves are arranged on the outer circumference of the upper valve sleeve; a plurality of upper valve sleeve sealing rings are arranged between the valve body and the upper valve sleeve, and the upper valve sleeve sealing rings are arranged in the upper valve sleeve sealing ring grooves; the ultrahigh pressure combined seal and the valve rod are arranged between the upper valve sleeve and the valve rod, the ultrahigh pressure combined seal is arranged in an ultrahigh pressure combined seal hole, the valve rod guide belt is arranged in a valve rod guide belt hole, the copper pressure sleeve is arranged on the upper portion of the ultrahigh pressure combined seal, and the ultrahigh pressure combined seal, the valve rod guide belt and the valve rod upper portion are matched to form upper portion supporting guide of the valve core assembly.
Further, a valve cover valve rod hole is formed in the middle of the valve cover, and a flat key groove is formed in the side wall of the valve cover valve rod hole; a flat key is arranged on the valve rod; the valve rod penetrates through a valve rod hole of the valve cover, and the flat key is arranged in the flat key groove in a sliding manner; the flat key is used for preventing the valve core assembly from rotating in the working process, and in addition, after the ultrahigh-pressure throttling safety valve works for a period of time, the rotary valve cover can be adjusted to drive the valve rod to rotate together through the flat key, so that the erosion position of high-pressure fluid to the valve rod is changed, the same position of the valve rod is prevented from being eroded for a long time, and the service life of the valve rod is prolonged.
Further, the outlet valve seat is in a circular thick plate shape, the lower plate surface is provided with a conical raised head, the middle of the upper plate surface is provided with a valve rod avoiding hole, the middle of the conical raised head is provided with a valve rod guide hole, the bottom of the valve rod guide hole is provided with a through valve rod pressure relief hole, a plurality of through valve seat water outlet holes are uniformly distributed around the axis of the valve rod guide hole, and the valve seat water outlet holes are communicated with the valve body water outlet holes; the lowest end of the valve rod is movably arranged in the valve rod guide hole, a valve rod guide sleeve is arranged between the lowest end of the valve rod and the valve rod guide hole, and the valve rod guide sleeve is matched with the lower end of the valve rod to form the lower support guide of the valve core assembly; the upper supporting guide and the lower supporting guide of the valve core assembly form a structure with supporting guides at two ends, so that the rigidity of the valve core assembly is greatly increased, and the vibration resistance of the throttle valve is correspondingly greatly improved, thereby solving the problem of fracture of the existing throttle valve caused by vibration of the valve core, improving the reliability of the throttle valve and prolonging the service life of the throttle valve.
Further, the outlet valve core is in a short circular ring shape, the upper part of the outer circle of the outlet valve core is provided with an outlet valve core conical surface, the lower part of the valve core conical surface is provided with an outlet valve core surface, and the diameter of the lower part of the outlet valve core conical surface is larger than that of the upper part; the length of a rotation line of the conical surface of the outlet valve core is greater than that of the rotation line of the conical hole of the valve seat; the conical hole of the valve seat is matched with the conical surface of the valve core of the outlet to form a gap throttling conical ring; the valve seat cavity is matched with the outlet valve core surface to form an outlet cavity, and the outlet cavity is communicated with the water outlet hole of the valve body through the valve rod avoiding hole and the water outlet hole of the valve seat; the outlet valve core is also provided with an outlet valve core threaded hole, the side wall of the outlet valve core threaded hole is provided with a through anti-loosening pin hole, the outlet valve core is fixedly connected with the valve rod through the outlet valve core threaded hole, and the outlet valve core is prevented from loosening through an anti-loosening pin arranged in the anti-loosening pin hole.
Furthermore, in the valve body assembly, a plurality of valve seat sealing rings are arranged between the valve seat and the valve seat hole of the valve body; in the valve core assembly, a plurality of valve rod sealing rings A are arranged between the valve core and the valve rod which are positioned at the uppermost end, a plurality of valve rod sealing rings B are arranged between the valve core and the valve rod which are positioned at the lower part of the valve core at the uppermost end, and a plurality of valve core sealing rings are arranged between the valve cores and between the valve core and the outlet valve core; the multiple sealing ring structural design of above-mentioned valve body subassembly and case subassembly compares current choke valve inner sealing structure design, has greatly improved the internal leakage problem of choke valve to reduce the influence of leaking in the choke valve to flow control, ensured flow control's accuracy and stability.
Furthermore, a water outlet bushing is fixedly arranged in a water outlet of the valve body and is used for solving the problem that fluid at the outlet of the ultrahigh pressure throttling safety valve erodes the side wall of the water outlet of the valve body; be equipped with the dismantlement hole on the apopore bush lateral wall, when apopore bush washd seriously, can dismantle the change to the apopore bush through the dismantlement hole to reduce the cost of maintenance of superhigh pressure throttle relief valve.
Due to the adoption of the technical scheme, the invention has the following beneficial effects: the invention discloses an ultrahigh pressure safety throttle valve for testing an oil drilling high-pressure pump, which comprises a valve body assembly and a valve core assembly, wherein the valve core assembly is arranged in the valve body assembly in a sliding manner; the valve body assembly is fixedly provided with a plurality of valve seats in an up-down superposition mode, the valve core assembly is fixedly provided with a plurality of valve cores in an up-down superposition mode, the valve seats are matched with the valve cores to form a multi-stage serial gap throttling conical ring and a backflow cavity, when ultrahigh pressure fluid flows through the ultrahigh pressure throttling safety valve, the pressure and the energy of the ultrahigh pressure fluid are reduced step by step through the throttling of the multi-stage serial gap throttling conical ring and the backflow cavity, so that the pressure born by each stage of gap throttling conical ring and the backflow cavity is greatly reduced, the corresponding speed of the fluid flowing through the throttling valve is also greatly reduced, the erosion problem of the throttling valve is greatly improved, and the service life of the throttling valve is prolonged; the structural design of the supporting and guiding at the two ends of the valve core assembly greatly increases the rigidity of the valve core assembly, so that the vibration resistance of the throttle valve is greatly improved; the structural design that the diameter of the gap throttling conical ring at the liquid outlet side is larger than that at the liquid inlet side ensures that the valve core can not block the throttling channel when the valve core is broken, and the gap of the throttling channel can be maximized on the contrary, so that the high-pressure pump and the test equipment can not be impacted and damaged, and the running safety of the equipment is ensured; when the valve core assembly moves downwards, the gap of the gap throttling conical ring is enlarged, the volume of the backflow cavity is kept unchanged, and the structural design characteristic ensures the linear flow characteristic and the large through-flow capacity of the throttling valve, so that the throttling valve is controlled more conveniently and accurately; the ultrahigh pressure safety throttling valve for the oil drilling high-pressure pump test has the characteristics of high working pressure, long service life, good vibration resistance, safety, reliability and convenience and accuracy in control, successfully solves the major technical problems of the throttling valve for the ultrahigh pressure fluid control for the oil field drilling and exploitation high-pressure pump test, and has the working pressure exceeding 140 MPa.
Drawings
FIG. 1 is a schematic structural view of an ultrahigh pressure safety throttle valve for a high-pressure pump test in oil drilling;
FIG. 2 is a schematic view of the valve body assembly;
FIG. 3 is a schematic view of a valve core assembly;
FIG. 4 is an enlarged view of part A;
FIG. 5 is an enlarged view of a portion B;
FIG. 6 is an enlarged view of a portion C;
FIG. 7 is an enlarged view of a portion D;
FIG. 8 is a schematic view of the valve body structure;
FIG. 9 is a schematic view of the valve cover structure;
FIG. 10 is a schematic view of the upper valve sleeve configuration;
FIG. 11 is a schematic view of a valve seat structure;
FIG. 12 is a schematic view of the outlet valve seat structure;
FIG. 13 is a schematic view of the exterior of the outlet valve seat;
FIG. 14 is a schematic view of a valve cartridge configuration;
fig. 15 is a schematic view of an outlet valve cartridge configuration.
In the figure: 1. a valve body assembly; 1.1, a valve body; 1.1.1, mounting a valve sleeve hole; 1.1.2, valve body cavity; 1.1.3, a water inlet; 1.1.4, valve seat bore; 1.1.5, water outlet holes of the valve body; 1.2, a valve cover; 1.2.1, valve cover and valve rod holes; 1.2.2, a flat key groove; 1.3, mounting a valve sleeve; 1.3.1, an upper valve sleeve cavity; 1.3.2, a water inlet of an upper valve sleeve cavity; 1.3.3, installing a valve stem hole of the valve sleeve; 1.3.4, a valve rod guide hole is arranged; 1.3.5, sealing the hole by ultrahigh pressure combination; 1.3.6, an upper valve sleeve sealing ring groove; 1.4, valve seats; 1.4.1, a valve seat conical hole; 1.4.2, valve seat cavity; 1.5, an outlet valve seat; 1.5.1, a valve rod avoidance hole; 1.5.2, a valve rod guide hole; 1.5.4, valve stem relief hole; 1.5.5, water outlet holes of the valve seats; 1.6, a water outlet hole lining; 1.7, pressing a sleeve by copper; 1.8, ultrahigh pressure combined sealing; 1.9, a valve rod guide belt; 1.10, installing a valve sleeve sealing ring; 1.11, a valve seat sealing ring; 1.12, a valve rod guide sleeve; 2. a valve core assembly; 2.1, a valve rod; 2.2, a valve core; 2.2.1, conical surface of valve core; 2.2.2, a valve core ring; 2.3, an outlet valve core; 2.3.1, conical surface of outlet valve core; 2.3.2, outlet valve core surface; 2.3.3, outlet valve core threaded hole; 2.3.5, anti-loosening pin holes; 2.4, an anti-loose pin; 2.5, flat bond; 2.6, a valve rod sealing ring A; 2.7, a valve core sealing ring; 2.8, a valve rod sealing ring B; 3. a throttling conical ring; 4. a reflux cavity; 5. an outlet chamber.
Detailed Description
The present invention will be explained in detail by the following examples, which are disclosed for the purpose of protecting all technical improvements within the scope of the present invention.
An ultrahigh pressure safety throttle valve for testing a high-pressure pump of oil drilling comprises a valve body assembly 1 and a valve core assembly 2; the valve body assembly 1 comprises a valve body 1.1, a valve cover 1.2, an upper valve sleeve 1.3, a valve seat 1.4 and an outlet valve seat 1.5; the middle of the valve body 1.1 is sequentially provided with an upper valve sleeve hole 1.1.1, a valve body cavity 1.1.2, a valve seat hole 1.1.4 and a valve body water outlet hole 1.1.5 which penetrate through the valve body 1.1 from top to bottom, and the side wall of the valve body cavity 1.1.2 is provided with an inclined water inlet 1.1.3; the valve cover 1.2 is fixedly arranged at the upper end part of the valve body 1.1; the upper valve sleeve 1.3 is fixedly arranged in the upper valve sleeve hole 1.1.1, and the upper end of the upper valve sleeve 1.3 is abutted against the lower end of the valve cover 1.2; the outlet valve seat 1.5 is fixedly arranged on the lower end surface of the valve seat hole 1.1.4; five valve seats 1.4 are arranged and fixedly arranged at the upper end part of the outlet valve seat 1.5 in an up-down overlapping mode, the upper end of the uppermost valve seat 1.4 is abutted against the lower end of the upper valve sleeve 1.3, and the valve seats 1.4 are positioned in the valve seat holes 1.1.4; the valve core assembly 2 comprises a valve rod 2.1, a valve core 2.2 and an outlet valve core 2.3; the valve rod 2.1 is a step rod; four valve cores 2.2 are arranged and fixedly arranged at the lower part of the valve rod 2.1 in an up-down overlapping mode; the outlet valve core 2.3 is fixedly arranged at the lower part of the valve core 2.2 at the lowest end; the valve core assembly 2 is arranged in the valve body assembly 1 in a sliding manner;
the valve seat 1.4 is in a short circular ring shape, a valve seat conical hole 1.4.1 and a valve seat cavity 1.4.2 are sequentially arranged in the middle of the valve seat 1.4 from top to bottom, and the diameter of the lower part of the valve seat conical hole 1.4.1 is larger than that of the upper part; the valve core 2.2 is in a short circular ring shape, the upper part of the outer circle of the valve core is provided with a valve core conical surface 2.2.1, the lower part of the valve core conical surface 2.2.1 is provided with a valve core ring 2.2.2, and the diameter of the lower part of the valve core conical surface 2.2.1 is larger than that of the upper part; the length of a rotation line of the conical surface 2.2.1 of the valve core is greater than that of a rotation line of the conical hole 1.4.1 of the valve seat; a plurality of radial annular grooves are arranged in an array of the valve seat conical hole 1.4.1 and the valve core conical surface 2.2.1; the valve seat conical hole 1.4.1 is matched with the valve core conical surface 2.2.1 to form a gap throttling conical ring 3; the valve seat cavity 1.4.2 is matched with the valve core ring 2.2.2 to form a return cavity 4;
the middle of the upper valve sleeve 1.3 is sequentially provided with a through ultrahigh pressure combined sealing hole 1.3.5, a valve rod guide hole 1.3.4, an upper valve sleeve valve rod hole 1.3 and an upper valve sleeve cavity 1.3.1 from top to bottom, the side wall of the upper valve sleeve cavity 1.3.1 is uniformly distributed and obliquely provided with a plurality of upper valve sleeve cavity water inlets 1.3.2, the oblique direction of the upper valve sleeve cavity water inlet 1.3.2 is opposite to that of the water inlet 1.1.3 of the valve body 1.1, and the upper valve sleeve cavity 1.3.1 is communicated with the valve body cavity 1.1.2 through the upper valve sleeve cavity water inlet 1.3.2; a plurality of upper valve sleeve sealing ring grooves 1.3.6 are arranged on the outer circumference of the upper valve sleeve 1.3; a plurality of upper valve sleeve sealing rings 1.10 are arranged between the valve body 1.1 and the upper valve sleeve 1.3, and the upper valve sleeve sealing rings 1.10 are arranged in the upper valve sleeve sealing ring grooves 1.3.6; an ultrahigh pressure combined seal 1.8 and a valve rod guide belt 1.9 are arranged between the upper valve sleeve 1.3 and the valve rod 2.1, the ultrahigh pressure combined seal 1.8 is arranged in an ultrahigh pressure combined seal hole 1.3.5, the valve rod guide belt 1.9 is arranged in a valve rod guide hole 1.3.4, and a copper pressure sleeve 1.7 is arranged at the upper part of the ultrahigh pressure combined seal 1.8;
a valve cover valve rod hole 1.2.1 is arranged in the middle of the valve cover 1.2, and a flat key groove 1.2.2 is arranged on the side wall of the valve cover valve rod hole 1.2.1; a flat key 2.5 is arranged on the valve rod 2.1; the valve rod 2.1 penetrates through a valve rod hole 1.2.1 of the valve cover, and the flat key 2.5 is arranged in the flat key groove 1.2.2 in a sliding mode;
the outlet valve seat 1.5 is in a circular thick plate shape, the lower plate surface is provided with a conical raised head, the middle of the upper plate surface is provided with a valve rod avoiding hole 1.5.1, the middle of the conical raised head is provided with a valve rod guide hole 1.5.2, the bottom of the valve rod guide hole 1.5.2 is provided with a through valve rod pressure relief hole 1.5.4, and a plurality of through valve seat water outlet holes 1.5.5 are uniformly distributed around the axis of the valve rod guide hole 1.5.2; the lowest end of the valve rod 2.1 is movably arranged in the valve rod guide hole 1.5.2, and a valve rod guide sleeve 1.12 is arranged between the lowest end of the valve rod 2.1 and the valve rod guide hole 1.5.2;
the outlet valve core 2.3 is in a short circular ring shape, the upper part of the outer circle of the outlet valve core is provided with an outlet valve core conical surface 2.3.1, the lower part of the valve core conical surface 2.2.1 is provided with an outlet valve core surface 2.3.2, and the diameter of the lower part of the outlet valve core conical surface 2.3.1 is larger than that of the upper part; the length of a rotation line of the outlet valve core conical surface 2.3.1 is greater than that of the valve seat conical hole 1.4.1; the conical hole 1.4.1 of the valve seat is matched with the conical surface 2.3.1 of the valve core of the outlet to form a gap throttling conical ring 3; the valve seat cavity 1.4.2 is matched with the outlet valve core surface 2.3.2 to form an outlet cavity 5, and the outlet cavity 5 is communicated with the valve body water outlet hole 1.1.5 through the valve rod avoiding hole 1.5.1 and the valve seat water outlet hole 1.5.5; the outlet valve core 2.3 is also provided with an outlet valve core threaded hole 2.3.3, the side wall of the outlet valve core threaded hole 2.3.3 is provided with a through anti-loosening pin hole 2.3.5, the outlet valve core 2.3 is fixedly connected with the valve rod 2.1 through the outlet valve core threaded hole 2.3.3, and the outlet valve core 2.3 is prevented from loosening through an anti-loosening pin 2.4 arranged in the anti-loosening pin hole 2.3.5;
in the valve body component 1, a valve seat sealing ring 1.11 is arranged between a valve seat 1.4 and a valve seat hole 1.1.4 of a valve body 1.1; in the valve core assembly 2, a valve rod sealing ring A2.6 is arranged between the uppermost valve core 2.2 and the valve rod 2.1, valve rod sealing rings B2.8 are arranged between the valve core 2.2 and the valve rod 2.1 at the lower part of the uppermost valve core 2.2, and valve core sealing rings 2.7 are arranged between the valve cores 2.2 and between the valve core 2.2 and the outlet valve core 2.3;
a water outlet bush 1.6 is fixedly arranged in a valve body water outlet 1.1.5 of the valve body 1.1.
The present invention is not described in detail in the prior art.
Claims (10)
1. The ultrahigh pressure safety throttle valve for the oil drilling high-pressure pump test comprises a valve body assembly (1) and a valve core assembly (2), wherein the valve core assembly (2) is arranged in the valve body assembly (1) in a sliding manner; the method is characterized in that: a plurality of valve seats (1.4) are fixedly arranged in the valve body assembly (1) in an up-down superposition mode, and a plurality of valve cores (2.2) are fixedly arranged in the valve core assembly (2) in an up-down superposition mode; two ends of the valve core assembly (2) are supported and guided and movably arranged in the valve body assembly (1); the valve seat (1.4) is matched with the valve core (2.2) to form a plurality of stages of slit throttling conical rings (3) and backflow cavities (4) which are arranged in series; the diameter of the gap throttling conical ring (3) at the liquid outlet side is larger than that at the liquid inlet side; when the valve core assembly (2) moves downwards, the gap of the gap throttling cone ring (3) is enlarged, and the volume of the return cavity (4) is kept unchanged.
2. The ultrahigh pressure safety throttle valve for the oil drilling high pressure pump test according to claim 1, which is characterized in that: the valve body assembly (1) comprises a valve body (1.1), a valve cover (1.2), an upper valve sleeve (1.3), a valve seat (1.4) and an outlet valve seat (1.5); the middle of the valve body (1.1) is sequentially provided with an upper valve sleeve hole (1.1.1), a valve body cavity (1.1.2), a valve seat hole (1.1.4) and a valve body water outlet hole (1.1.5) which penetrate through the valve body from top to bottom, and the side wall of the valve body cavity (1.1.2) is provided with an inclined water inlet (1.1.3); the valve cover (1.2) is fixedly arranged at the upper end part of the valve body (1.1); the upper valve sleeve (1.3) is fixedly arranged in the upper valve sleeve hole (1.1.1), and the upper end of the upper valve sleeve (1.3) is abutted against the lower end of the valve cover (1.2); the outlet valve seat (1.5) is fixedly arranged on the lower end surface of the valve seat hole (1.1.4); the valve seat (1.4) is provided with a plurality of valve seats, the valve seats are fixedly arranged at the upper end part of the outlet valve seat (1.5) in an up-down overlapping mode, the upper end of the uppermost valve seat (1.4) is abutted against the lower end of the upper valve sleeve (1.3), and the valve seats (1.4) are positioned in the valve seat holes (1.1.4).
3. The ultrahigh pressure safety throttle valve for the oil drilling high pressure pump test according to claim 2, which is characterized in that: the valve core assembly (2) comprises a valve rod (2.1), a valve core (2.2) and an outlet valve core (2.3); the valve rod (2.1) is in a step rod shape; a plurality of valve cores (2.2) are fixedly arranged at the lower part of the valve rod (2.1) in an up-down overlapping mode; the outlet valve core (2.3) is fixedly arranged at the lower part of the lowest valve core (2.2).
4. The ultrahigh pressure safety throttle valve for the oil drilling high pressure pump test according to claim 3, which is characterized in that: the valve seat (1.4) is in a short circular ring shape, a valve seat conical hole (1.4.1) and a valve seat cavity (1.4.2) are sequentially arranged in the middle of the valve seat (1.4) from top to bottom, and the diameter of the lower part of the valve seat conical hole (1.4.1) is larger than that of the upper part; the valve core (2.2) is in a short circular ring shape, the upper part of the outer circle of the valve core is provided with a valve core conical surface (2.2.1), the lower part of the valve core conical surface (2.2.1) is provided with a valve core ring (2.2.2), and the diameter of the lower part of the valve core conical surface (2.2.1) is larger than that of the upper part; the length of a rotation line of the conical surface (2.2.1) of the valve core is greater than that of the conical hole (1.4.1) of the valve seat; a plurality of radial annular grooves are arranged in the valve seat conical hole (1.4.1) and the valve core conical surface (2.2.1) in an array manner; the valve seat conical hole (1.4.1) is matched with the valve core conical surface (2.2.1) to form a gap throttling conical ring (3); the valve seat cavity (1.4.2) is matched with the valve core ring (2.2.2) to form a return cavity (4).
5. The ultrahigh pressure safety throttle valve for the oil drilling high pressure pump test according to claim 3, which is characterized in that: the middle of the upper valve sleeve (1.3) is sequentially provided with a through ultrahigh pressure combined sealing hole (1.3.5), a valve rod guide hole (1.3.4), an upper valve sleeve valve rod hole (1.3.3) and an upper valve sleeve cavity (1.3.1) from top to bottom, the side wall of the upper valve sleeve cavity (1.3.1) is uniformly distributed and obliquely provided with a plurality of upper valve sleeve cavity water inlets (1.3.2), the oblique direction of the upper valve sleeve cavity water inlet (1.3.2) is opposite to that of the water inlet (1.1.3) of the valve body (1.1), and the upper valve sleeve cavity (1.3.1) is communicated with the valve body cavity (1.1.2) through the upper valve sleeve cavity water inlet (1.3.2); a plurality of upper valve sleeve sealing ring grooves (1.3.6) are arranged on the outer circumference of the upper valve sleeve (1.3); a plurality of upper valve sleeve sealing rings (1.10) are arranged between the valve body (1.1) and the upper valve sleeve (1.3), and the upper valve sleeve sealing rings (1.10) are arranged in the upper valve sleeve sealing ring grooves (1.3.6); an ultrahigh pressure combined seal (1.8) and a valve rod guide belt (1.9) are arranged between the upper valve sleeve (1.3) and the valve rod (2.1), the ultrahigh pressure combined seal (1.8) is arranged in an ultrahigh pressure combined seal hole (1.3.5), the valve rod guide belt (1.9) is arranged in a valve rod guide hole (1.3.4), and a copper pressure sleeve (1.7) is arranged on the upper portion of the ultrahigh pressure combined seal (1.8).
6. The ultrahigh pressure safety throttle valve for the oil drilling high pressure pump test according to claim 3, which is characterized in that: a valve cover valve rod hole (1.2.1) is formed in the middle of the valve cover (1.2), and a flat key groove (1.2.2) is formed in the side wall of the valve cover valve rod hole (1.2.1); a flat key (2.5) is arranged on the valve rod (2.1); the valve rod (2.1) penetrates through the valve rod hole (1.2.1) of the valve cover, and the flat key (2.5) is arranged in the flat key groove (1.2.2) in a sliding mode.
7. The ultrahigh pressure safety throttle valve for the oil drilling high pressure pump test according to claim 3, which is characterized in that: the outlet valve seat (1.5) is in a circular thick plate shape, the lower plate surface is provided with a conical raised head, the middle of the upper plate surface is provided with a valve rod avoiding hole (1.5.1), the middle of the conical raised head is provided with a valve rod guide hole (1.5.2), the bottom of the valve rod guide hole (1.5.2) is provided with a through valve rod pressure relief hole (1.5.4), and a plurality of through valve seat water outlet holes (1.5.5) are uniformly distributed around the axis of the valve rod guide hole (1.5.2); the lowest end of the valve rod (2.1) is movably arranged in the valve rod guide hole (1.5.2), and a valve rod guide sleeve (1.12) is arranged between the lowest end of the valve rod (2.1) and the valve rod guide hole (1.5.2).
8. The ultrahigh pressure safety throttle valve for the oil drilling high pressure pump test according to claim 3, which is characterized in that: the outlet valve core (2.3) is in a short circular ring shape, the upper part of the outer circle of the outlet valve core is provided with an outlet valve core conical surface (2.3.1), the lower part of the valve core conical surface (2.2.1) is provided with an outlet valve core surface (2.3.2), and the diameter of the lower part of the outlet valve core conical surface (2.3.1) is larger than that of the upper part; the length of a rotation line of the conical surface (2.3.1) of the outlet valve core is greater than that of the conical hole (1.4.1) of the valve seat; the conical hole (1.4.1) of the valve seat is matched with the conical surface (2.3.1) of the valve core of the outlet to form a gap throttling conical ring (3); the valve seat cavity (1.4.2) is matched with the outlet valve core surface (2.3.2) to form an outlet cavity (5), and the outlet cavity (5) is communicated with the valve body water outlet hole (1.1.5) through the valve rod avoiding hole (1.5.1) and the valve seat water outlet hole (1.5.5); the outlet valve core (2.3) is further provided with an outlet valve core threaded hole (2.3.3), the side wall of the outlet valve core threaded hole (2.3.3) is provided with a through anti-loosening pin hole (2.3.5), the outlet valve core (2.3) is fixedly connected with the valve rod (2.1) through the outlet valve core threaded hole (2.3.3), and the outlet valve core (2.3) is prevented from loosening through an anti-loosening pin (2.4) arranged in the anti-loosening pin hole (2.3.5).
9. The ultrahigh pressure safety throttle valve for the oil drilling high pressure pump test according to claim 3, which is characterized in that: in the valve body assembly (1), a valve seat sealing ring (1.11) is arranged between a valve seat (1.4) and a valve seat hole (1.1.4) of the valve body (1.1); in the case subassembly (2), a valve rod sealing ring A (2.6) is arranged between the case (2.2) and the valve rod (2.1) which are positioned at the uppermost end, a valve rod sealing ring B (2.8) is arranged between the case (2.2) and the valve rod (2.1) which are positioned at the lower part of the case (2.2) at the uppermost end, and case sealing rings (2.7) are arranged between the cases (2.2) and between the case (2.2) and the outlet case (2.3).
10. The ultrahigh pressure safety throttle valve for the oil drilling high pressure pump test according to claim 8, which is characterized in that: a water outlet bush (1.6) is fixedly arranged in a valve body water outlet (1.1.5) of the valve body (1.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210175807.3A CN114688261A (en) | 2022-02-25 | 2022-02-25 | Ultrahigh pressure safety throttle valve for testing high-pressure pump of petroleum drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210175807.3A CN114688261A (en) | 2022-02-25 | 2022-02-25 | Ultrahigh pressure safety throttle valve for testing high-pressure pump of petroleum drilling |
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|---|---|
| CN114688261A true CN114688261A (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210175807.3A Pending CN114688261A (en) | 2022-02-25 | 2022-02-25 | Ultrahigh pressure safety throttle valve for testing high-pressure pump of petroleum drilling |
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| Country | Link |
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| CN (1) | CN114688261A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116136160A (en) * | 2023-04-19 | 2023-05-19 | 贵州航天凯山石油仪器有限公司 | Valve and method for controlling underground carbon dioxide flow |
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