CN113494642B - Injection assembly and injection dispenser - Google Patents

Injection assembly and injection dispenser Download PDF

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Publication number
CN113494642B
CN113494642B CN202010270473.9A CN202010270473A CN113494642B CN 113494642 B CN113494642 B CN 113494642B CN 202010270473 A CN202010270473 A CN 202010270473A CN 113494642 B CN113494642 B CN 113494642B
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CN
China
Prior art keywords
push rod
adjusting
injection allocation
diameter
diameter section
Prior art date
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Active
Application number
CN202010270473.9A
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Chinese (zh)
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CN113494642A (en
Inventor
王金龙
石善志
韩俊伟
杨新克
郭长永
易勇刚
张立义
于会永
董兴
张辉
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Petrochina Co Ltd
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Petrochina Co Ltd
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Priority to CN202010270473.9A priority Critical patent/CN113494642B/en
Publication of CN113494642A publication Critical patent/CN113494642A/en
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Classifications

    • 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
    • F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
    • F16K47/16—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths the throttling member being a cone
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
    • E21B43/168—Injecting a gaseous medium
    • 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
    • F16K1/14—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 with ball-shaped valve member
    • 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
    • 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
    • F16K1/46—Attachment of sealing rings
    • 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
    • F16K27/0245—Construction of housing; Use of materials therefor of lift valves with ball-shaped valve members
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • 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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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The invention provides an injection allocation assembly and an injection allocation device. Wherein, join in marriage annotate subassembly and include: the shell is provided with a central channel extending along the axial direction, the inner wall of the central channel is provided with a plurality of compression diameter regulating sections, the side surface of the shell is provided with an inlet and an outlet which are communicated with the central channel, and all the compression diameter regulating sections are positioned between the inlet and the outlet; the adjusting nut is rotatably connected with the shell, and the outer side of the adjusting nut is provided with a gear structure; the push rod is arranged in the central channel in a penetrating way and is in threaded connection with the adjusting nut, the push rod moves along the axial direction of the shell under the driving of the adjusting nut, the outer wall of the push rod is provided with a plurality of pressure-adjusting large-diameter sections, the pressure-adjusting large-diameter sections are provided with inclined planes, and when the push rod moves, the size of a gap between the inclined planes and the pressure-adjusting large-diameter sections is changed. The invention solves the problem that the injection allocation device in the prior art can not complete the injection allocation adjustment of the gas.

Description

Injection assembly and injection dispenser
Technical Field
The invention relates to the technical field of layered gas injection, in particular to a dispensing assembly and a dispensing device.
Background
In the development process of oil fields, gas is injected into oil reservoirs, so that the oil reservoirs have stronger driving force, and the recovery ratio of the oil reservoirs is improved. The injection allocation device is an injection allocation tool and is one of key tools of the gas injection process. When the injection allocation device in the prior art is used, the effective throttling cannot be realized due to low gas viscosity, only wheel injection can be performed, when the water injection and water distribution device for full-use water injection is used, the injection allocation device is extremely easy to cause blockage to affect use under the condition of too small adjustment opening, once the injection allocation device is blocked, the injection allocation device cannot be fully used, and a pipe column is required to be lifted to be put into a dispensing tool again for unsealing and dispensing.
In the prior art, a valve core of a flow regulating device of a commonly used eccentric injection allocation device is improved to be a baffle plate, and the size of a polymer outlet is regulated by rotating the baffle plate, so that the effect of flow regulation is realized. When the injection allocation device is used, on one hand, the adjustment control of gas injection allocation cannot be completed when the adjustment port is too large, and the effective throttling cannot be realized due to low gas viscosity, so that the use is affected. And under the condition of too small adjusting port, the blocking is extremely easy to cause to influence the use.
Disclosure of Invention
The invention mainly aims to provide an injection allocation assembly and an injection allocation device, which are used for solving the problem that the injection allocation device in the prior art cannot be used for adjusting the injection allocation of gas.
To achieve the above object, according to one aspect of the present invention, there is provided a bolus assembly comprising: the shell is provided with a central channel extending along the axial direction, the inner wall of the central channel is provided with a plurality of compression diameter regulating sections, the side surface of the shell is provided with an inlet and an outlet which are communicated with the central channel, and all the compression diameter regulating sections are positioned between the inlet and the outlet; the adjusting nut is rotatably connected with the shell, and the outer side of the adjusting nut is provided with a gear structure; the push rod is arranged in the central channel in a penetrating way and is in threaded connection with the adjusting nut, the push rod moves along the axial direction of the shell under the driving of the adjusting nut, the outer wall of the push rod is provided with a plurality of pressure-adjusting large-diameter sections, the pressure-adjusting large-diameter sections are provided with inclined planes, and when the push rod moves, the size of a gap between the inclined planes and the pressure-adjusting large-diameter sections is changed.
Further, the diameter of the pressure regulating large-diameter section is smaller than that of the pressure regulating compression diameter section, the injection allocation assembly further comprises a ball body, the ball body is abutted to one end, close to the inlet, of the push rod and moves synchronously with the push rod, the diameter of the ball body is larger than that of the pressure regulating compression diameter section, and the ball body can open or close the central channel under the driving of the push rod.
Further, the ball body and the adjusting nut are respectively positioned at two ends of the push rod.
Further, the injection allocation assembly further comprises a first elastic piece, two ends of the first elastic piece are respectively abutted with the shell and the ball body, and elastic force for abutting the push rod is provided for the ball body.
Further, the diameter of the pressure regulating large-diameter section is not smaller than that of the pressure regulating compression diameter section, the pressure regulating large-diameter section can seal the central channel, the injection allocation assembly further comprises a ball body, and the ball body is abutted with one end of the push rod, which is far away from the adjusting nut.
Further, one end of the pressure regulating large-diameter section close to the outlet is conical, and the circumferential side face of the conical shape is used as an inclined plane.
Further, the inner wall of the central channel further comprises a sealing reducing section, the outer wall of the push rod further comprises a sealing small-diameter section and a sealing large-diameter section which are sequentially connected, and the sealing small-diameter section and the sealing large-diameter section are respectively matched with the sealing reducing section under the movement of the push rod so as to open or close the central channel.
Further, the injection allocation assembly further comprises a first sealing element, wherein the first sealing element is arranged at the sealing reducing section and matched with the sealing large-diameter section to seal the central channel.
Further, the injection allocation assembly further comprises a second sealing piece, the second sealing piece is in sealing fit with the push rod, the first sealing piece and the pressure regulating large-diameter section are located on one side, close to the inlet, of the outlet, and the second sealing piece and the adjusting nut are located on the other side, away from the inlet, of the outlet.
Further, the casing includes upper shell, discharge shell, well shell and inferior valve that connect in order, and the entry is offered in the side of inferior valve, and the export is offered in the side of discharge shell, is provided with on the inner wall of well shell and adjusts the compression footpath section.
Further, the dispensing assembly further comprises a plurality of third sealing elements, and the third sealing elements are arranged at the connecting positions among the upper shell, the discharge shell, the middle shell and the lower shell.
Further, the injection allocation assembly further comprises: the retaining cover is connected with one end, far away from the shell, of the adjusting nut; the inner side of the adjusting nut is provided with a check ring, and two ends of the second elastic piece are respectively abutted with the check cover and the check ring.
According to another aspect of the present invention, there is provided an injection allocation apparatus comprising: a tube body; the inner core assembly is arranged in the pipe body, and at least one part of the inner core assembly can be rotatably arranged relative to the pipe body; the injection allocation assembly is characterized in that at least one part of the injection allocation assembly is positioned between the inner core assembly and the pipe body, an inlet and an outlet of the injection allocation assembly are respectively communicated with the inner side and the outer side of the pipe body, and the injection allocation assembly is driven by the inner core assembly to control the communication state between the inner side and the outer side of the pipe body.
Further, the core assembly includes: the inner wall of the positioning sleeve is provided with a positioning structure for positioning the measuring and adjusting instrument; the adjusting sleeve is rotatably connected with the positioning sleeve, and a groove for the insertion of the measuring and adjusting instrument is formed in the inner wall of the adjusting sleeve; the gear sleeve is connected with the adjusting sleeve and synchronously rotates with the adjusting sleeve, the adjusting nut of the injection allocation assembly is positioned between the gear sleeve and the pipe body, the gear sleeve is meshed with the adjusting nut, and the measuring and adjusting instrument drives the adjusting sleeve and the gear sleeve to rotate through the groove.
Further, the body includes upper joint, interactive pipe, main part pipe and the lower joint of connecting in order, and the position sleeve is located interactive intraductal, and the part of joining in marriage annotating the subassembly is located main part pipe department.
Further, the dispenser further includes an envelope disposed within the tube and at a lower end of the dispensing assembly.
By adopting the technical scheme of the invention, the pressure-regulating diameter section is arranged on the central channel, the pressure-regulating large-diameter section is arranged on the push rod, and through the cooperation between the pressure-regulating large-diameter section and the pressure-regulating diameter section, when the push rod moves axially under the drive of the regulating nut, the different positions of the inclined planes of the pressure-regulating large-diameter section are matched with the pressure-regulating diameter section, so that the size of a gap formed between the pressure-regulating large-diameter section and the pressure-regulating diameter section is changed, when fluid enters the central channel from the inlet, the fluid firstly enters a region with larger volume, then enters another region with larger volume through the gap, in the process, the flow velocity is reduced due to the increase of the cross-sectional area of circulation, and the pressure of the fluid is naturally reduced, so that multistage pressure regulation can be realized through the gaps between the plurality of the pressure-regulating diameter sections and the pressure-regulating large-diameter section. Through foretell join in marriage annotate subassembly structure for join in marriage annotating the subassembly and having realized multistage pressure regulating to the regulation of gas, control is more accurate, can realize the allotment to gas, and through the design of multistage pressure regulating, effectively solve gaseous in-process gas viscosity and low can't realize effective throttle, adjust the defect that the hole is too little easily to cause the jam, if impurity in the injection gas will be clearance jam, then drive push rod motion makes the clearance increase, cooperates the pressure of gas injection simultaneously, realizes impurity scour unblock, and multistage adjustable structural design is more practical, automatic degree of formation is higher.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 shows a schematic structural view of an injection allocation assembly of the present invention;
FIG. 2 shows a schematic structural view of the injection allocation device of the present invention;
figure 3 shows a cross-sectional view in the direction A-A of figure 2.
Wherein the above figures include the following reference numerals:
10. A housing; 11. adjusting the compression diameter section; 12. an inlet; 13. an outlet; 14. sealing the diameter-reducing section; 15. an upper case; 16. a discharge case; 17. a middle shell; 18. a lower case; 20. an adjusting nut; 30. a push rod; 31. pressure regulating large diameter section; 32. sealing the small-diameter section; 33. sealing the large-diameter section; 40. a sphere; 50. a first elastic member; 60. a first seal; 70. a second seal; 80. a third seal; 90. a blocking cover; 100. a tube body; 101. an upper joint; 102. an interactive tube; 103. a main body tube; 104. a lower joint; 110. an inner core assembly; 111. a positioning sleeve; 112. an adjusting sleeve; 1121. a groove; 113. a gear sleeve; 120. and (5) checking the envelope.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.
In the present invention, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present invention.
The invention provides an injection allocation assembly and an injection allocation device, which aim to solve the problem that an injection allocation device in the prior art cannot be used for adjusting gas injection allocation.
An injection allocation assembly as shown in fig. 1 comprises a shell 10, an adjusting nut 20 and a push rod 30, wherein the shell 10 is provided with a central channel extending along the axial direction, the inner wall of the central channel is provided with a plurality of compression adjustment diameter sections 11, the side surface of the shell 10 is provided with an inlet 12 and an outlet 13 which are communicated with the central channel, and all the compression adjustment diameter sections 11 are positioned between the inlet 12 and the outlet 13; the adjusting nut 20 is rotatably connected with the shell 10, and the outer side of the adjusting nut 20 is provided with a gear structure; the push rod 30 is arranged in the central channel in a penetrating way and is in threaded connection with the adjusting nut 20, the push rod 30 moves along the axial direction of the shell 10 under the driving of the adjusting nut 20, the outer wall of the push rod 30 is provided with a plurality of pressure-adjusting large-diameter sections 31, the pressure-adjusting large-diameter sections 31 are provided with inclined planes, and when the push rod 30 moves, the size of a gap between the inclined planes and the pressure-adjusting large-diameter sections 11 is changed.
In this embodiment, the compression diameter adjusting section 11 is disposed on the central channel, and the pressure adjusting large diameter section 31 is disposed on the push rod 30, through the cooperation between the pressure adjusting large diameter section 31 and the compression diameter adjusting section 11, when the push rod 30 moves axially under the driving of the adjusting nut 20, the different positions of the inclined plane of the pressure adjusting large diameter section 31 cooperate with the compression diameter adjusting section 11, so as to change the gap size formed between the two, when the fluid enters the central channel from the inlet 12, the fluid enters the region with larger volume first, then enters the region with another larger volume through the gap, in this process, the flow velocity is reduced due to the increase of the cross-sectional area of the circulation, the pressure of the fluid is naturally reduced, and thus the multistage pressure adjustment can be realized through the gaps between the plurality of compression diameter adjusting sections 11 and the pressure adjusting large diameter section 31. Through foretell join in marriage annotate subassembly structure for join in marriage annotating the subassembly and having realized multistage pressure regulating to the regulation of gas, control is more accurate, can realize the allotment to gas, and through the design of multistage pressure regulating, effectively solve gaseous in-process gas viscosity and low can't realize effective throttle, adjust the defect that the hole is too little easily to cause the jam, if the impurity in the injected gas will be clearance jam, then drive push rod 30 motion makes the clearance increase, cooperates the pressure of gas injection simultaneously, realizes impurity scour unblock, and multistage adjustable structural design is more practical, and automatic degree of formation is higher.
The number of the pressure-adjusting large-diameter section 31 and the pressure-adjusting small-diameter section 11 may be set as required, and the number of the pressure-adjusting large-diameter sections and the pressure-adjusting small-diameter sections may be several, that is, several stages of pressure adjustment may be provided, and the range of pressure adjustment may be increased with the increase of the number of stages. In this embodiment, two injection allocation components for forming a two-stage pressure regulation are taken as an example for explanation, and the two pressure regulation large-diameter section 31 and the two compression diameter section 11 are respectively provided.
In this embodiment, the diameter of the pressure-regulating large-diameter section 31 is smaller than the diameter of the pressure-regulating small-diameter section 11, the injection allocation assembly further comprises a ball 40, the ball 40 is abutted against one end of the push rod 30 close to the inlet 12 and moves synchronously with the push rod 30, the diameter of the ball 40 is larger than the diameter of the pressure-regulating small-diameter section 11, and the ball 40 plays a role of a valve and can open or close the central channel under the drive of the push rod 30. That is, the pressure-regulating large diameter section 31 of the push rod 30 changes only the size of the gap, which cannot realize the opening and closing of the central passage, and the opening and closing function is realized by the ball 40, and since the ball 40 moves in synchronization with the push rod 30, the ball 40 can move between the positions contacting and separating from the pressure-regulating large diameter section 11 when the push rod 30 moves, thereby blocking or opening the central passage. Thus, the sphere 40 controls the opening and closing of the central channel, and the erosion influence of fluid, impurities and the like on the sphere 40 is small, so that the reliability of the opening and closing of the central channel can be ensured, and the situation that the injection allocation assembly cannot be closed is avoided.
The ball 40 and the adjusting nut 20 of this embodiment are respectively located at two ends of the push rod 30, more specifically, the inlet 12 of this embodiment is disposed at a lower end side of the housing 10, the outlet 13 is disposed at a middle side of the housing 10, the ball 40 is located at the position of the inlet 12, the adjusting nut 20 is located at an upper end of the housing 10, correspondingly, the inclined plane is located at an upper end of the pressure-adjusting large diameter section 31, the gap can be reduced by upward movement of the push rod 30 until the central channel is closed, and the gap can be increased by downward movement of the push rod 30.
In this embodiment, the injection allocation assembly further includes a first elastic member 50, where the first elastic member 50 is preferably a spring, and two ends of the first elastic member 50 respectively abut against the housing 10 and the ball 40, and provide an elastic force for the ball 40 to abut against the push rod 30, so that the ball 40 always keeps a contact state with the push rod 30, and thus the push rod 30 moves synchronously with the ball 40.
In addition to the above arrangement mode of using the ball 40 as the valve control center channel for opening and closing, the pressure-regulating large diameter section 31 may be used to control the opening and closing of the center channel, specifically, the diameter of the pressure-regulating large diameter section 31 is not smaller than the diameter of the pressure-regulating compression diameter section 11, when the push rod 30 moves axially, the inclined surface on the pressure-regulating large diameter section 31 can contact with the pressure-regulating compression diameter section 11, so as to seal the center channel, at this time, the ball 40 no longer plays a valve role, but plays a centralizing role, the diameter of the ball 40 does not have a requirement, and the ball 40 still abuts against the end of the push rod 30 far from the adjusting nut 20 for centralizing and positioning.
In this embodiment, since the housing 10 is generally cylindrical, the end of the pressure-regulating large diameter section 31 near the outlet 13 is tapered, and the circumferential side of the taper is used as a bevel, and accordingly, a chamfer structure may be provided on the pressure-regulating large diameter section 11 to fit the bevel.
In this embodiment, the inner wall of the central channel further includes a sealing reducing section 14, the outer wall of the push rod 30 further includes a sealing small-diameter section 32 and a sealing large-diameter section 33 which are sequentially connected, and when the push rod 30 moves to the ball 40 to close the central channel, the sealing large-diameter section 33 is matched with the sealing reducing section 14 to seal the central channel; when the push rod 30 moves downward, the seal small diameter section 32 cooperates with the seal reducing section 14, and fluid in the central passage can flow through the gap between the seal small diameter section 32 and the seal reducing section 14, thereby opening the central passage. The sealing reducing section 14 can further ensure the reliability of the central passage when the central passage is closed on the basis of the closing of the central passage by the ball 40, and the central passage is still kept in the closed state even if the ball 40 fails to close the central passage.
In this embodiment, the injection molding assembly further comprises a first seal 60, preferably a gurley ring, the first seal 60 being disposed at the seal reduced diameter section 14 for mating with the seal large diameter section 33 to ensure good tightness of the seal center channel.
In this embodiment, the injection allocation assembly further comprises a second sealing member 70, and the second sealing member 70 is preferably a gray ring, the second sealing member 70 is in sealing engagement with the push rod 30, and along the axial direction of the push rod 30, the first sealing member 60 and the pressure regulating large diameter section 31 are located on one side of the outlet 13 near the inlet 12, and the second sealing member 70 and the regulating nut 20 are located on the other side of the outlet 13 far from the inlet 12. The first seal 60 and the second seal 70 both play a role in sealing, and the difference is that the sealing effect of the first seal 60 is changed along with the axial movement of the push rod 30, namely, when the large-diameter sealing section 33 stretches into the small-diameter sealing section 14, the first seal 60 is in contact with the large-diameter sealing section 33, when the large-diameter sealing section 33 stretches out of the small-diameter sealing section 14, the small-diameter sealing section 32 is not in contact with the first seal 60, and the small-diameter sealing section 32 is not in contact with the first seal 60, so that smooth fluid flow from the inlet 12 to the outlet 13 through the central channel is ensured, and the sealing relationship between the second seal 70 and the push rod 30 is always in contact sealing along with the movement of the push rod 30, so that the influence on the cooperation of the large-diameter sealing section 33 caused by the fluid flowing between the adjusting nut 20 and the shell 10 is avoided, and overflow is prevented.
Optionally, the casing 10 includes an upper casing 15, a discharge casing 16, a middle casing 17 and a lower casing 18 connected in sequence, the parts are connected through threads, the inlet 12 is formed on the side surface of the lower casing 18, the outlet 13 is formed on the side surface of the discharge casing 16, the inner wall of the middle casing 17 is provided with a compression diameter adjusting section 11, and the adjusting nut 20 is located at the top of the upper casing 15. And the dosing assembly further comprises a plurality of third seals 80, the third seals 80 preferably being sealing rings, the third seals 80 being provided at the junctions between the upper housing 15, the discharge housing 16, the middle housing 17 and the lower housing 18, so as to ensure that fluid does not overflow out of the central passage.
Preferably, the main body of the push rod 30 is made of steel, a ceramic ring is connected to the outer side of the steel, the ceramic ring is used as the pressure-regulating large-diameter section 31, correspondingly, a ceramic core is arranged on the inner wall of the middle shell 17 as the pressure-regulating small-diameter section 11, and the ball body 40 is also a ceramic ball.
In this embodiment, the injection allocation assembly further includes a blocking cover 90 and a second elastic member, where the second elastic member is a spring, and the blocking cover 90 is connected to one end of the adjusting nut 20 away from the housing 10; the inboard of adjusting nut 20 is provided with the retaining ring, and the both ends of second elastic component are respectively with fender lid 90 and retaining ring butt to still be provided with the retaining ring between the tip of adjusting nut 20 and push rod 30, join in marriage the notes subassembly and still include third elastic component, fourth elastic component and spring holder, the both ends of third elastic component respectively with two retaining rings butt, the spring holder setting is between the tip of adjusting nut 20 and push rod 30, the both ends of fourth elastic component respectively with retaining ring and spring holder butt. The above arrangement cooperates with the first elastic member 50 to limit the positions of the push rod 30, the adjusting nut 20 and the ball 40. Based on the above arrangement, in addition to the push rod 30 being integrally provided, the push rod 30 may be provided in a plurality of segments, and the segments may be held in abutment with each other by the elastic members.
The embodiment also provides an injection allocation device, as shown in fig. 2 and 3, which comprises a pipe body 100, an inner core assembly 110 and the injection allocation assembly, wherein the inner core assembly 110 is arranged in the pipe body 100, at least one part of the inner core assembly 110 is rotatably arranged relative to the pipe body 100, and the inner core assembly 110 is matched with a measuring and adjusting instrument in a positioning way and is matched with the measuring and adjusting instrument and the injection allocation assembly in a transmission way on the one hand and is used for transmission on the other hand; at least a portion of the injection allocation assembly is positioned between the core assembly 110 and the pipe body 100, the inlet 12 and the outlet 13 of the injection allocation assembly are respectively communicated with the inner side and the outer side of the pipe body 100, and the injection allocation assembly is driven by the core assembly 110 to control the communication state between the inner side and the outer side of the pipe body 100.
In this embodiment, the inner core assembly 110 includes a positioning sleeve 111, an adjusting sleeve 112 and a gear sleeve 113, a positioning structure for positioning a measuring and adjusting instrument is provided on the inner wall of the positioning sleeve 111, and is used for matching with the measuring and adjusting instrument, so as to position the measuring and adjusting instrument, and a positioning flange for connection is provided at the lower end of the positioning sleeve 111; the adjusting sleeve 112 is rotatably connected with the positioning sleeve 111, a groove 1121 for inserting a measuring and adjusting instrument is formed in the inner wall of the adjusting sleeve 112, and the embodiment is provided with a dovetail groove based on the structure of the measuring and adjusting instrument, as shown in fig. 3; the gear sleeve 113 is connected with the adjusting sleeve 112 and synchronously rotates with the adjusting sleeve 112, the adjusting nut 20 of the injection allocation assembly is positioned between the gear sleeve 113 and the pipe body 100, the gear sleeve 113 is meshed with the adjusting nut 20, when the push rod 30 needs to be operated, the injection allocation assembly is moved down, the magnetic positioning in the injection allocation assembly is determined through the positioning structure, the dovetail bulge of the injection allocation assembly extends into the dovetail groove of the adjusting sleeve 112 along with the lowering of the injection allocation assembly, then the dovetail groove is extruded to drive the adjusting sleeve 112 and the gear sleeve 113 to rotate together, the gear sleeve 113 transmits rotating force to the adjusting nut 20, and the adjusting nut 20 drives the push rod 30 to axially move, so that the adjustment of the injection allocation assembly can be realized.
Optionally, the pipe body 100 includes an upper joint 101, an interaction pipe 102, a main body pipe 103 and a lower joint 104 which are sequentially connected, the parts can be connected by screw, a positioning sleeve 111 is located in the interaction pipe 102, the main body pipe 103 has a thicker thickness, a cavity is formed in the thickness of the main body pipe 103, most of the injection allocation component is contained in the cavity, only a part of the upper end is located outside the cavity, and the part is located between the gear sleeve 113 and the outer mutual pipe, so that the engagement of the adjusting nut 20 and the gear sleeve 113 is facilitated, two opposite sides of the cavity are respectively provided with a through hole, and are respectively butted with an inlet 12 and an outlet 13 of the injection allocation component to communicate the inside and the outside of the pipe body 100.
In this embodiment, the dispenser further includes an envelope 120, the envelope 120 being disposed within the tube 100 and at the lower end of the dispensing assembly.
When the injection allocation device is actually used, a plurality of injection allocation devices are connected in sequence and then are placed to stratum positions to be adjusted, each stratum to be adjusted corresponds to one injection allocation device, the layers are separated by a packer or a bridge plug, and therefore each layer is adjusted relatively independently, before the injection allocation devices are placed, the push rod 30 is lifted to the highest position, so that a central channel of an injection allocation assembly is closed, and then the opening and closing states of the injection allocation assembly are controlled through the placement measuring and adjusting instrument according to requirements, so that the adjustment of the air quantity of each layer is achieved.
According to the indoor test data, the distance between the two adjustable compression diameter sections 11 of the movable part is defined as a, the total stroke of a is 10mm, and the movable part is fully opened when a=10 mm, is free of throttling, and is fully closed when a=0. As shown by the throttle test data of the lower CO 2, when the stroke is 2.1mm and the overflow is 0.93t/d, the pressure difference between the inlet 12 and the outlet 13 is 1.8MPa, and the pressure difference requirement between the on-site CO 2 separate injection wells is met.
It should be noted that, in the above embodiments, a plurality refers to at least two.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
1. The problem that the injection allocation device in the prior art cannot finish the adjustment of the injection allocation of the gas is solved;
2. The injection allocation assembly regulates the gas to realize multi-stage pressure regulation, so that the control is more accurate;
3. the defects that effective throttling cannot be realized due to low gas viscosity in the gas mixing process and blockage is easily caused due to too small regulating holes are effectively overcome;
4. the multistage adjustable structural design is more practical, and the automation degree is higher.
It will be apparent that the embodiments described above are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. A dispensing assembly, comprising:
-a housing (10), the housing (10) having an axially extending central channel, the inner wall of the central channel having a plurality of compression-modulating diameter sections (11), the housing (10) having an inlet (12) and an outlet (13) on its side communicating with the central channel, and all the compression-modulating diameter sections (11) being located between the inlet (12) and the outlet (13);
the adjusting nut (20) is rotatably connected with the shell (10), and the outer side of the adjusting nut (20) is provided with a gear structure;
The push rod (30) is arranged in the central channel in a penetrating way and is in threaded connection with the adjusting nut (20), the push rod (30) is driven by the adjusting nut (20) to move along the axial direction of the shell (10), the outer wall of the push rod (30) is provided with a plurality of pressure-adjusting large-diameter sections (31), the pressure-adjusting large-diameter sections (31) are provided with inclined planes, and when the push rod (30) moves, the size of a gap between each inclined plane and each pressure-adjusting large-diameter section (11) is changed;
the diameter of one end of the pressure regulating large-diameter section (31) close to the outlet (13) is smaller than that of the pressure regulating compression diameter section (11), the injection allocation assembly further comprises a sphere (40), the sphere (40) is abutted with one end of the push rod (30) close to the inlet (12) and moves synchronously with the push rod (30), the diameter of the sphere (40) is larger than that of the pressure regulating compression diameter section (11), and the sphere (40) can open or close the central channel under the drive of the push rod (30);
the diameter of the pressure regulating large-diameter section (31) close to one end of the inlet (12) is not smaller than the diameter of the pressure regulating compression diameter section (11), and the pressure regulating large-diameter section (31) can seal the central channel;
The inner wall of the central channel further comprises a sealing reducing section (14), the outer wall of the push rod (30) further comprises a sealing small-diameter section (32) and a sealing large-diameter section (33) which are sequentially connected, and the sealing small-diameter section (32) and the sealing large-diameter section (33) are respectively matched with the sealing reducing section (14) under the movement of the push rod (30) so as to open or close the central channel.
2. The injection allocation assembly according to claim 1, wherein the ball (40) and the adjustment nut (20) are located at each end of the push rod (30).
3. The injection allocation assembly according to claim 2, further comprising a first elastic member (50), wherein both ends of the first elastic member (50) are respectively abutted with the housing (10) and the ball (40), and provide elastic force for the ball (40) to be abutted with the push rod (30).
4. Injection allocation assembly according to claim 1, wherein the end of the pressure regulating large diameter section (31) near the outlet (13) is tapered and the circumferential side of the taper acts as the bevel.
5. The injection molding assembly of claim 1, further comprising a first seal (60), the first seal (60) being disposed at the seal reduced diameter section (14) and sealing the central passage in cooperation with the seal large diameter section (33).
6. The injection allocation assembly according to claim 5, further comprising a second seal (70), the second seal (70) being in sealing engagement with the pushrod (30) and being located on a side of the outlet (13) adjacent to the inlet (12) along an axial direction of the pushrod (30), the first seal (60) and the pressure regulating large diameter section (31) being located on the other side of the outlet (13) remote from the inlet (12), the second seal (70) and the adjustment nut (20).
7. The injection allocation assembly according to claim 1, wherein the housing (10) comprises an upper shell (15), a discharge shell (16), a middle shell (17) and a lower shell (18) which are sequentially connected, the inlet (12) is formed in the side surface of the lower shell (18), the outlet (13) is formed in the side surface of the discharge shell (16), and the compression diameter regulating section (11) is arranged on the inner wall of the middle shell (17).
8. The injection allocation assembly according to claim 7, further comprising a plurality of third seals (80), said third seals (80) being provided at the junctions between the upper shell (15), the discharge shell (16), the middle shell (17) and the lower shell (18).
9. The injection allocation assembly of claim 7, further comprising:
a blocking cover (90), wherein the blocking cover (90) is connected with one end of the adjusting nut (20) far away from the shell (10);
The inner side of the adjusting nut (20) is provided with a check ring, and two ends of the second elastic piece are respectively abutted with the baffle cover (90) and the check ring.
10. A dispenser, comprising:
a tube body (100);
A core assembly (110), the core assembly (110) disposed within the tubular body (100), and at least a portion of the core assembly (110) rotatably disposed relative to the tubular body (100);
The injection allocation assembly according to any one of claims 1 to 9, at least a portion of the injection allocation assembly being located between the core assembly (110) and the tubular body (100), an inlet (12) and an outlet (13) of the injection allocation assembly being in communication with an inner side and an outer side of the tubular body (100), respectively, the injection allocation assembly being adapted to control a communication state between the inner side and the outer side of the tubular body (100) under the driving of the core assembly (110).
11. The injector of claim 10, wherein the core assembly (110) comprises:
the positioning sleeve (111), the inner wall of the positioning sleeve (111) is provided with a positioning structure for positioning the measuring and adjusting instrument;
the adjusting sleeve (112) is rotatably connected with the positioning sleeve (111), and a groove (1121) for the insertion of the measuring and adjusting instrument is formed in the inner wall of the adjusting sleeve (112);
The gear sleeve (113), gear sleeve (113) with adjusting sleeve (112) are connected, and with adjusting sleeve (112) synchronous rotation, the adjusting nut (20) of joining in marriage annotating the subassembly is located gear sleeve (113) with between body (100), and gear sleeve (113) with adjusting nut (20) meshing, survey the accent appearance and pass through recess (1121) drive adjusting sleeve (112) with gear sleeve (113) rotate.
12. The injection allocation device according to claim 11, wherein the pipe body (100) comprises an upper joint (101), an interaction pipe (102), a main pipe (103) and a lower joint (104) which are connected in sequence, the positioning sleeve (111) is located in the interaction pipe (102), and a part of the injection allocation assembly is located at the main pipe (103).
13. The dispenser of claim 11, further comprising an envelope (120), the envelope (120) being disposed within the tube (100) and at a lower end of the dispensing assembly.
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