CN212928783U - Oil well steam injection adjusting device - Google Patents

Abstract

The utility model relates to a petrochemical technical field, in particular to vapour adjusting device is annotated to oil well. The device comprises a blanking plug, a transmission rod, a valve core, a valve seat, a positive rotation stopping structure, a negative rotation stopping structure and an operating mechanism for rotating the transmission rod; the blanking plug is used for being connected with one port of the high-pressure cavity in a sealing way; the transmission rod is hermetically arranged in the blanking plug in a penetrating way and can rotate and axially move relative to the blanking plug; a steam passage is arranged in the valve seat, and the transmission rod and the valve seat are screwed in a thread way; the positive rotation stopping structure realizes the rotation stopping between the transmission rod and the valve seat when the transmission rod rotates relative to the valve seat to enable the valve core to move to the position for plugging the steam passing channel; the positive rotation stopping structure realizes the rotation stopping between the transmission rod and the valve seat when the transmission rod rotates relative to the valve seat to enable the valve core to move to the position for plugging the steam passing channel; the valve seat is provided with a connecting thread section which is used for being in sealing connection with the channel support body in the oil pipe sleeve. The device is used for solving the problems of low efficiency and potential safety hazard when injecting steam into an oil well.

Description

Oil well steam injection adjusting device

Technical Field

The utility model relates to a petrochemical technical field, in particular to vapour adjusting device is annotated to oil well.

Background

Many oil wells require steam injection into the well during the oil recovery process to facilitate oil recovery. In actual production, one steam source is generally connected with a plurality of oil wells, and steam is injected into the plurality of oil wells simultaneously.

At present, a fixed oil nozzle is generally adopted to control steam injection when steam is injected into an oil well. As shown in fig. 1, a gas injection port 107 of the oil pipe sleeve 101 is connected to a gas source, one end of the oil pipe sleeve 101 seals a high-pressure cavity in the oil pipe sleeve 101 through an outer plug 102, a fixed choke 103 is mounted on an oil pipe sleeve inner channel support body 104 of the oil pipe sleeve 101, and after steam enters the high-pressure cavity of the oil pipe sleeve 101, the steam can enter an oil pipe sleeve inner channel 105 through a through hole 106 on the fixed choke 103 and then enters an oil well.

Because the aperture of the through-hole on the fixed glib talker is fixed, so when needing to change and annotating vapour speed, just need to change the fixed glib talker that other through-hole apertures are different, this just causes and needs frequently to change fixed glib talker when using, and change fixed glib talker and need release the residual pressure in the high-pressure cavity earlier, unload the outer blanking plug on the oil pipe sleeve again, then just can dismantle fixed glib talker, whole process is very troublesome, can lead to annotating vapour efficiency reduction, and, because outer blanking plug and fixed glib talker corrosion are serious usually, it is comparatively difficult to dismantle, in addition, because what pour into is high temperature high pressure steam many times, still there is certain potential safety hazard when changing fixed glib talker.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a vapour adjusting device is annotated to oil well for the problem that the notes vapour efficiency that leads to is lower and have the potential safety hazard because of need frequently change fixed glib talker when annotating vapour in solving prior art in the oil well.

In order to achieve the above object, the utility model provides a vapour adjusting device is annotated to oil well adopts following technical scheme:

this oil well steam injection adjusting device includes:

the blanking plug is used for being in sealing connection with one port of the high-pressure cavity;

the transmission rod is hermetically arranged in the blanking plug in a penetrating way and can rotate and axially move relative to the blanking plug;

the valve core is arranged at one end of the transmission rod;

the valve seat is internally provided with a steam passage, the transmission rod and the valve seat are screwed in threads, and when the transmission rod rotates relative to the valve seat and moves relatively, the valve core can be closed and guided through the steam passage;

the positive rotation stopping structure realizes the rotation stopping between the transmission rod and the valve seat when the transmission rod rotates relative to the valve seat to enable the valve core to move to the position for plugging the steam passing channel;

the anti-rotation stopping structure realizes the stopping of the rotation between the transmission rod and the valve seat when the transmission rod rotates relative to the valve seat to enable the valve core to move to the position communicated with the steam passing channel;

the valve seat is provided with a connecting thread section which is used for being in sealing connection with the channel support body in the oil pipe sleeve, the connecting thread section is coaxial with the transmission rod, and the steam passing channel is used for communicating the channel in the oil pipe sleeve and the high-pressure cavity after the valve seat is connected to the channel support body in the oil pipe sleeve;

an operating structure for rotating the transmission rod is arranged at one end of the transmission rod, which is back to the valve core.

The utility model provides a vapour adjusting device is annotated to oil well's beneficial effect is: the oil well steam injection adjusting device is hermetically arranged on an oil pipe sleeve, when steam is required to be injected into an oil well, the transmission rod is rotated through the operating structure, so that the valve core opens the steam passing channel, the steam is ensured to smoothly enter the oil well, when the steam injection work is finished, the transmission rod can be rotated, the valve core closes the steam passing channel, the steam is blocked from entering the oil well, when the flow of the steam injected into the oil well is required to be adjusted, the transmission rod can be rotated, the opening degree of the steam passing channel opened by the valve core is controlled, and further the flow of the steam is controlled; the whole device is very convenient to use, does not need to be frequently replaced, has high production efficiency, can be controlled directly through an operating mechanism on the device, and has no potential safety hazard.

Further, the valve seat is of a cylindrical structure, one axial end of the cylindrical valve seat is provided with a valve port matched with the valve core, the other axial end of the cylindrical valve seat is provided with a sealing plate, the transmission rod is in threaded fit with the sealing plate and extends into the cylindrical valve seat, the wall of the cylindrical valve seat is provided with a through hole penetrating the inside and the outside, and the through hole, the inner cavity of the cylindrical valve seat and the valve port form a steam passing channel together. The structure of the valve seat is simple.

Furthermore, a forward rotation stop block and a reverse rotation stop block which radially protrude out of the valve core are arranged on one side, back to the valve port, of the valve core on the transmission rod, a forward stop structure which is blocked with the forward rotation stop block in the forward rotation direction is arranged on the inner wall of one end, close to the valve port, of the cylindrical valve seat, the forward rotation stop block and the forward stop structure jointly form a forward rotation stop structure, a reverse stop structure which is blocked with the reverse rotation stop block in the reverse rotation direction is arranged on the side, facing the valve port, of the sealing plate, and the reverse rotation stop block and the reverse stop structure jointly form a reverse rotation stop structure. The forward rotation stopping structure and the reverse rotation stopping structure in the form are simple, convenient to process and low in production cost.

Furthermore, the valve port is an inward-closing conical port, and the valve core is provided with an outer conical surface matched with the inward-closing conical port. The arrangement is convenient for controlling the opening of the steam passing channel, is convenient for quantification and is more convenient to use; this form also facilitates sealing in high temperature and high pressure environments.

Furthermore, a rotating handle is installed at one end of the transmission rod, which is back to the valve core, and the rotating handle forms an operating structure. The rotating handle is convenient for operating the transmission rod to rotate, and the rotating handle is directly arranged on the transmission rod and is not easy to lose.

Furthermore, the blanking plug is provided with scales which are axially arranged, the rotating handle is provided with an indicating structure matched with the scales, and when the rotating handle is rotated reversely to enable the valve core to gradually open the steam passage, the opening degree of the steam passage can be observed through the indicating structure. The arrangement is convenient for controlling the opening degree of the steam passing channel.

Furthermore, a sleeve matched with the plug bush is arranged on the rotating handle, the scales are arranged on the outer peripheral surface of the plug matched with the sleeve bush, and the end surface of the sleeve, which is close to the plug bush, can indicate the scales when the transmission rod axially moves relative to the valve seat. The whole end surface of the sleeve close to the blanking plug can indicate scales, so that the numerical value of the corresponding scale can be conveniently observed.

Furthermore, the rotating handle is axially and adjustably arranged on the transmission rod. Set up like this, be convenient for before the use with the telescopic terminal surface that leans on to the blanking plug with the zero point on the scale correspond, and then be convenient for follow-up definite need to make the steam passageway reach the degree that requires to open when going to where.

Furthermore, a hole for the transmission rod to penetrate through in the blanking plug is a stepped hole, the large-diameter end of the stepped hole is close to the operation structure, sealing filler is filled in the stepped hole, a pressing cap is installed at an orifice of the stepped hole close to the operation structure, the transmission rod penetrates through the pressing cap, and the pressing cap is used for compacting the sealing filler to ensure sealing between the blanking plug and the transmission rod. The stepped hole is formed in the blanking plug, so that sealing filler and a pressing cap are convenient to install, and sealing matching of the transmission rod and the blanking plug is convenient to realize.

Furthermore, the inner diameter of the small-diameter end of the stepped hole is larger than the outer diameter of the transmission rod, an internal thread section is arranged on the inner peripheral surface of the stepped hole, and the internal thread section is matched with a thread section, matched with the valve seat in a thread mode, on the transmission rod. The oil well steam injection adjusting device is arranged in such a way that when the oil well steam injection adjusting device is not used, the transmission rod and the blanking plug can be fixed by screwing the thread section of the transmission rod into the thread on the stepped hole of the valve seat, and the oil well steam injection adjusting device is convenient to store and transport.

Drawings

FIG. 1 is a schematic illustration of a prior art use of a fixed nozzle tip for controlling steam injection as described in the background section;

FIG. 2 is a state diagram of the oil well steam injection adjusting device of embodiment 1;

fig. 3 is a schematic structural diagram of embodiment 1 of the oil well steam injection adjusting device provided by the invention;

fig. 4 is a cross-sectional view of embodiment 1 of the oil well steam injection regulating device provided by the present invention;

fig. 5 is a schematic structural diagram of a blanking plug of embodiment 1 of the oil well steam injection adjusting device provided by the invention;

fig. 6 is a cross-sectional view of the plug of embodiment 1 of the oil well steam injection regulating device provided by the present invention;

fig. 7 is a schematic structural diagram of a rotating handle, an adjusting nut, a transmission rod and a valve core of embodiment 1 of the oil well steam injection adjusting device provided by the invention;

fig. 8 is a schematic structural diagram of a valve seat of embodiment 1 of the oil well steam injection adjusting device provided by the invention.

In the drawings: 101-oil pipe sleeve, 102-outer plug, 103-fixed oil nozzle, 104-oil pipe sleeve inner channel support body, 105-oil pipe sleeve inner channel, 106-through hole, 107-air injection port, 1-oil pipe sleeve, 11-air injection port, 2-plug, 21-scale section, 22-conical section, 23-first-stage hole, 24-second-stage hole, 25-third-stage hole, 211-scale line, 3-driving rod, 31-rod body, 32-direction-changing dial, 311-rotation stopping groove, 321-positive rotation stop block, 322-reverse rotation stop block, 4-rotating handle, 41-wheel disc, 42-sleeve, 5-valve seat, 51-large-diameter section, 52-small-diameter section, 53-closing plate, 511-positive direction stop block, 512-through hole, 531-reverse stop block, 6-sealing filler, 7-pressing cap, 71-small diameter section, 72-large diameter section, 8-adjusting nut and 9-valve core.

Detailed Description

The following describes the present invention with reference to the accompanying drawings.

The utility model provides a vapour adjusting device is annotated to oil well embodiment 1:

as shown in fig. 2, the oil well steam injection adjusting device is used in cooperation with the oil pipe sleeve 1 to control whether or not and the degree of communication between a high-pressure cavity (not shown) in the oil pipe sleeve 1 and an oil pipe sleeve inner channel (not shown) in the oil pipe sleeve 1, so as to adjust the steam injection of the oil well, and the oil pipe sleeve 1 is provided with a gas injection port 11 for injecting steam into the high-pressure cavity.

As shown in fig. 2-6, the oil well steam injection adjusting device comprises a plug 2, wherein the plug 2 is in threaded connection with one end of an oil pipe sleeve 1, so that a high-pressure cavity is plugged; the blanking plug 2 comprises a conical section 22 close to the oil pipe sleeve 1 and a scale section 21 back to the oil pipe sleeve 1, a conical hole matched with the conical section 22 is formed in the end part, matched with the blanking plug 2, of the oil pipe sleeve 1, matched threads are arranged on the outer peripheral surface of the conical section 22 and the inner peripheral surface of the conical hole of the oil pipe sleeve 1, and the conical section 22 and the scale section are in sealing connection through thread matching. The graduated section 21 defining the plug 2 is located to the left of the conical section 22; the inner part of the blanking plug 2 is provided with a stepped hole, the stepped hole penetrates through the blanking plug 2 in the left-right direction, the stepped hole is a three-stage stepped hole, and the aperture of the stepped hole is sequentially reduced from left to right to form a first reaching hole 23, a second stage hole 24 and a third stage hole 25.

As shown in fig. 2, 3, 4, 7 and 8, a transmission rod 3 penetrates through the stepped hole of the blanking plug 2, a valve core 9 is fixedly connected to the right end of the transmission rod 3, the transmission rod 3 comprises a cylindrical rod body 31 and a direction-changing dial 32 arranged at the right end of the rod body 31, the direction-changing dial 32 is positioned at the left side of the valve core 9, the right part of the valve core 9 is tapered, and the radius is gradually reduced from left to right; this vapour adjusting device is annotated to oil well still includes the disk seat 5 of a tube-shape, disk seat 5 is including leaning on the big footpath section 51 on a left side and leaning on the footpath section 52 on the right side, the big footpath section 51 and the footpath section 52 of disk seat 5 all are coaxial with the body of rod 31 of transfer line 3, be equipped with shrouding 53 at the left end of the inner chamber of big footpath section 51, the right-hand member portion and the case 9 of transfer line 3 stretch into in the inner chamber of disk seat 5, be equipped with the perforation that supplies the body of rod 31 to pass on shrouding 53, be equipped with the internal thread in the perforation, the right part of the body of rod 31 be equipped with the external screw thread with.

The valve seat 5 is arranged in a high-pressure cavity of the oil pipe sleeve 1 when in use, the outer peripheral surface of the small-diameter section 52 of the valve seat 5 is provided with an external thread, the channel supporting body in the oil pipe sleeve of the oil pipe sleeve 1 is provided with an internal thread, the valve seat 5 is fixedly arranged on the channel supporting body in the oil pipe sleeve of the oil pipe sleeve 1 through thread matching, and the valve seat and the channel supporting body are in sealing connection through threads.

As shown in fig. 4, an inward-contracting taper mouth adapted to the tapered outer peripheral surface of the valve core 9 is arranged at the connection position of the large-diameter section 51 and the small-diameter section 52 of the valve seat 5 and at the end of the small-diameter section 52 close to the large-diameter section 51, the inward-contracting taper mouth forms a valve port of the valve seat 5, and the valve core 9 can open and close the valve port in the process that the transmission rod 3 drives the valve core 9 to move in the left-right direction relative to the valve seat 5; the wall of the large-diameter section 51 is provided with a through hole 512, the through hole 512 is communicated with the high-pressure cavity of the oil pipe sleeve 1 and the inner cavity of the valve seat 5, the through hole 512, the inner cavity of the large-diameter section 51, the valve port and the inner cavity of the small-diameter section 52 form a steam passing channel, and the steam passing channel is communicated with the high-pressure cavity and the channel in the oil pipe sleeve 1.

As shown in fig. 4 and 7, a forward stop block 511 extending leftward is disposed on an inner wall of a right end of the large diameter section 51, a forward rotation stop 321 is disposed at an outer edge of a rightward side surface of the direction-changing dial 32 of the transmission rod 3, the forward rotation stop 321 protrudes from the valve core 9 in a radial direction of the direction-changing dial 32, that is, a distance from an outer edge of the forward rotation stop 321 to an axis of the rod body 31 is greater than a distance from an outer edge of the valve core 9 to the axis of the rod body 31, the forward rotation stop 321 stops with the forward stop block 511 when the valve core 9 blocks the valve port in a rightward movement process of the transmission rod 3 relative to the valve seat 5 (i.e., the transmission rod 3 rotates forward), so as to achieve rotation stop of the transmission rod 3 and; a reverse stop block 531 extending towards the right is arranged on the side surface of the sealing plate 53 facing the right, a reverse rotation stop block 322 is arranged at the outer edge of the side surface of the direction-changing dial 32 facing the left of the transmission rod 3, and the reverse rotation stop block 322 stops the reverse stop block 531 when the valve core 9 opens the valve port and the direction-changing dial 32 is close to the sealing plate 53 in the process that the transmission rod 3 moves leftwards relative to the valve seat 5 (namely, the transmission rod 3 rotates reversely), so that the transmission rod 3 and the valve seat 5 are stopped; the forward stopper 511 and the forward stopper 321 together constitute a forward rotation stopping structure, and the reverse stopper 531 and the reverse stopper 322 together constitute a reverse rotation stopping structure.

A section of internal thread is arranged in the third-level hole 25 of the blanking plug 2, the internal thread is matched with the external thread on the right part of the rod body 31 of the transmission rod 3, and in the process that the transmission rod 3 moves leftwards relative to the blanking plug 2, the thread section on the transmission rod 3 can extend into the thread section in the third-level hole 25, so that the transmission rod 3 and the blanking plug 2 are relatively fixed.

As shown in fig. 4, the sealing filler 6 is arranged in the second-stage hole 24 of the plug 2, a pressing cap 7 is arranged on the left side of the sealing filler 6 in the stepped hole of the plug 2, the pressing cap 7 is provided with a right small-diameter section 71 and a left large-diameter section 72, the outer diameter of the small-diameter section 71 is slightly smaller than the inner diameter of the second-stage hole 24, the outer diameter of the large-diameter section 72 is matched with the inner diameter of the first-stage hole 23, matched threads are arranged on the outer circumferential surface of the large-diameter section 72 and the inner circumferential surface of the first-stage hole 23, the pressing cap 7 is fixed relative to the plug 2 through the threads and can move rightwards relative to the plug 2, so that the sealing filler 6 is pressed through the small-diameter section 71, and the steam in the high-pressure cavity is prevented from being discharged along the rod body 31.

As shown in fig. 2, fig. 3, fig. 4 and fig. 7, a rotation stopping groove 311 is formed in the left end of the rod body 31 from the outer circumferential surface to the inside in the radial direction, the rotation stopping groove 311 extends to the right from the left end surface of the rod body 31 by a certain distance, an external thread is formed on the outer circumferential surface of a rod section corresponding to the rotation stopping groove 311 of the rod body 31, a rotating handle 4 is fixedly installed at the left end of the rod body 31 through two adjusting nuts 8, the rotating handle 4 includes a left wheel disc 41 and a right sleeve 42 sleeved on the scale section 21 of the blanking plug 2, a through hole for the rod body 31 to pass through is formed in the wheel disc 41, a rotation stopping block (not shown in the figure) capable of being inserted into the rotation stopping groove 311 of the rod body 31 is arranged at the through hole, and the rotating stopping of the rotating. The rotating handle 4 can be adjusted in position in the axial direction of the rod body 31 through two adjusting nuts 8; the rotating handle 4 forms an operating structure for controlling the transmission rod 3 to rotate.

As shown in fig. 5, a plurality of annular scale marks 211 are axially arranged on the outer circumferential surface of the scale section 21 of the blanking plug 2, and the rightmost scale mark 211 is a start scale mark, i.e., a zero scale mark; in the process that the transmission rod 3 moves leftwards from the position where the valve plug 9 blocks the valve port, the rotating handle 4 moves leftwards along with the transmission rod 3, the sleeve 42 also moves leftwards gradually, the right end face of the sleeve 42 corresponds to different scale marks 211 on the scale section 21 of the blanking plug 2 in the moving process, when the right end face of the sleeve 42 corresponds to the rightmost zero scale mark, the valve plug 9 completely blocks the valve port, the sleeve 42 moves leftwards gradually, the right end face of the sleeve 42 corresponds to different scale marks 211 gradually, and the degree that the valve plug 9 opens the valve port is different corresponding to different scale marks 211. Of course, what degree the valve core 9 opens the valve port when corresponding to a certain scale mark 211 is specifically set according to actual needs, and details are not repeated here; the sleeve 42 constitutes an indication structure cooperating with the graduation marks 211.

When the oil well steam injection adjusting device is used, the following steps can be referred to:

1) the transmission rod 3 is arranged in a stepped hole of the blanking plug 2 in a penetrating manner, a sealing filler 6 and a pressing cap 7 are arranged to realize the sealing fit of the transmission rod 3 and the blanking plug 2, and then a rotating handle 4 is arranged at the left end of the transmission rod 3;

2) installing the valve seat 5 at the end of the transmission rod 3, and enabling the transmission rod 3 to rotate forward relative to the valve seat 5 until the forward rotation stop 321 on the transmission rod 3 and the forward stop block 511 on the valve seat 5 stop, wherein the valve core 9 blocks the valve port on the valve seat 5; or, the valve seat 5 is installed at the end of the transmission rod 3, the external thread on the right part of the rod body 31 can extend into the through hole of the sealing plate 53 all the time after the valve seat 5 and the transmission rod 3 are assembled, and the external thread on the rod body 31 is matched with the internal thread in the through hole, so that the valve seat 5 can rotate along with the rotation of the transmission rod 3 under the condition of small external acting force;

2) fixing the blanking plug 2 on the oil pipe sleeve 1, and then continuing to rotate the transmission rod 3 in the forward direction, so that the small-diameter section 52 of the valve seat 5 is fixed on the channel support body in the oil pipe sleeve 1 (according to the actual situation, the transmission rod 3 may need to be pushed to the right first in the process, so that the threads on the small-diameter section 52 of the valve seat 5 are in contact with the threads on the channel support body in the oil pipe sleeve);

3) adjusting the position of the rotating handle 4 on the transmission rod 3 to enable the right end face of the sleeve 42 of the rotating handle 4 to correspond to the rightmost zero scale mark on the scale section 21 of the blanking plug 2;

4) steam is injected into the high-pressure cavity through the air injection port 11 on the oil pipe sleeve 1, and the transmission rod 3 is rotated reversely so as to open a valve port on the valve seat 5, so that the communication between the high-pressure cavity and a channel in the oil pipe sleeve is realized; in the process of reversely rotating the transmission rod 3, the rotation of the transmission rod 3 can be stopped when the right end face of the sleeve 42 of the rotating handle 4 corresponds to a certain scale mark 211 according to actual requirements;

5) when the oil well is producing oil, the transmission rod 3 is rotated continuously and reversely, when the reverse rotation stop block 322 on the transmission rod 3 stops with the reverse stop block 531 on the valve seat 5, the transmission rod 3 is rotated continuously and reversely, at this time, the valve seat 5 will rotate together with the transmission rod 3 and will be rotated down from the channel support body in the oil pipe sleeve, the drive rod 3 is then rotated in the opposite direction until the external thread on the drive rod 3 is screwed into the internal thread in the third hole 25 of the obturator 2, thereby achieving the relative fixation of the drive rod 3 and the obturator 2 (this process, as the case may be, may require pulling the drive rod 3 to the left after the valve seat 5 is screwed down from the tubing casing channel support, so that the thread on the drive rod 3 contacts the thread in the third hole 25 of the obturator 2, and then the drive rod 3 is rotated in the opposite direction again, thereby achieving the relative fixation of the drive rod 3 and the obturator 2).

The utility model provides a vapour adjusting device is annotated to oil well embodiment 2:

the difference from example 1 is that: the valve core and the rod body are integrally formed and can be used as well.

The utility model provides a vapour adjusting device is annotated to oil well embodiment 3:

the difference from example 1 is that: the valve port on the valve seat is arranged on the cylinder wall of the large-diameter section of the cylindrical structure, one end of the cylindrical structure is provided with a gas outlet communicated with the channel in the oil pipe sleeve, the valve core is arranged into a cylindrical structure with the outer diameter being the same as the inner diameter of the large-diameter section of the valve seat, when the valve core is used, the valve core moves axially, the range of the valve port is blocked by the outer peripheral surface of the valve core to adjust the opening degree of the steam passing channel, and the valve core can be also, certainly, the positive rotation stop block on the valve core can be arranged on the end face of the valve core, facing the channel in the oil pipe sleeve, and the negative rotation stop.

The utility model provides a vapour adjusting device is annotated to oil well embodiment 4:

the difference from example 1 is that: the positive rotation stopping structure and the negative rotation stopping structure are in other structural forms, and specifically comprise the following steps: set up one section recess that extends along the circumference of big footpath section on the right-hand member inner wall of the big footpath section of disk seat, the recess has the start and ends, the extension of recess is not enough a week, specific length is confirmed according to actual conditions, and the degree of depth from the start to the end recess crescent, then can realize the transfer line when forward rotation with the standstill of disk seat through the cooperation of the end wall of the end of positive rotation dog and recess, equally, also can set up one section recess that extends along the circumference of big footpath section on the shrouding, the recess that sets up the form and set up on the right-hand member inner wall of the big footpath section of above-mentioned disk seat is similar, can realize the transfer line when the reverse rotation with the standstill of disk seat through the cooperation of reverse rotation dog and recess equally.

The utility model provides a vapour adjusting device is annotated to oil well embodiment 5:

the difference from example 1 is that: the rotation of transfer line realizes operating through other structures, specifically is: an inner hexagonal hole is formed in the left end face of the transmission rod, a special crank is matched with the inner hexagonal hole, a plug which can be inserted into the inner hexagonal hole is arranged on the crank, and the rotation of the transmission rod can be conveniently achieved through the crank.

The utility model provides a vapour adjusting device is annotated to oil well embodiment 6:

the difference from example 1 is that: the valve core and the valve port are cylindrical and can be used, but of course, the valve core and the valve port can also be in other shapes, such as rectangular parallelepiped.

In the above embodiments, the rotating handle is adjustably mounted on the transmission rod by two adjusting nuts. In other embodiments, the rotating handle may be mounted on the transmission rod in other position-adjustable manners, for example, a wheel disc of the rotating handle has a sleeve for being sleeved on an end of the rod body, the sleeve is relatively provided with two through holes, the end of the rod body is provided with a through slot hole extending along the length direction of the rod body, and then the sleeve is fixed at different positions of the slot hole by a matched bolt and nut, so that the position of the rotating handle relative to the transmission rod can be adjusted.

In the above embodiments, the blanking plug is internally provided with the stepped hole, the sealing filler is arranged in the stepped hole, and the pressing cap is arranged, so that the transmission rod and the blanking plug are in sealing fit. In other embodiments, the blanking plug may be provided with only one straight hole without a stepped hole, an annular sealing ring groove is formed in the inner circumferential surface of the straight hole, then the driving rod and the blanking plug are in sealing fit through an O-shaped sealing ring, the inner diameter of the sealing ring is smaller than the outer diameter of the rod body of the driving rod, and the driving rod and the blanking plug are sealed by the elasticity of the sealing ring.

In the above embodiments, a plurality of annular scale marks are arranged on the scale section of the blanking plug, and the degree of opening the valve port of the valve seat by the valve core is identified by rotating the right end face of the sleeve of the handle corresponding to different scale marks. In other embodiments, the scale lines can also extend along the axial direction of the blanking plug, then different scales are marked on the scale lines, and the degree of the valve core opening the valve port of the valve seat can be identified by matching the right end face of the sleeve of the rotating handle with the scale lines; the rotating handle can be not provided with a sleeve, a pointer extending towards the right end can be fixed on the wheel disc, and the degree of opening the valve port of the valve seat by the valve core can be identified through the matching of the right end part of the pointer and the annular scale mark, and the same is true.

Claims (10)

1. An oil well steam injection adjusting device is characterized by comprising:

the blanking plug is used for being in sealing connection with one port of the high-pressure cavity;

the transmission rod is hermetically arranged in the blanking plug in a penetrating way and can rotate and axially move relative to the blanking plug;

the valve core is arranged at one end of the transmission rod;

the valve seat is internally provided with a steam passage, the transmission rod and the valve seat are screwed in threads, and when the transmission rod rotates relative to the valve seat and moves relatively, the valve core can be closed and guided through the steam passage;

the positive rotation stopping structure realizes the rotation stopping between the transmission rod and the valve seat when the transmission rod rotates relative to the valve seat to enable the valve core to move to the position for plugging the steam passing channel;

the anti-rotation stopping structure realizes the stopping of the rotation between the transmission rod and the valve seat when the transmission rod rotates relative to the valve seat to enable the valve core to move to the position communicated with the steam passing channel;

the valve seat is provided with a connecting thread section which is used for being in sealing connection with the channel support body in the oil pipe sleeve, the connecting thread section is coaxial with the transmission rod, and the steam passing channel is used for communicating the channel in the oil pipe sleeve and the high-pressure cavity after the valve seat is connected to the channel support body in the oil pipe sleeve;

an operating structure for rotating the transmission rod is arranged at one end of the transmission rod, which is back to the valve core.

2. An oil well steam injection regulating device as claimed in claim 1, wherein the valve seat is a cylindrical structure, one axial end of the cylindrical valve seat is provided with a valve port matched with the valve core, the other axial end of the cylindrical valve seat is provided with a sealing plate, the transmission rod is in threaded fit with the sealing plate and extends into the cylindrical valve seat, the cylindrical wall of the cylindrical valve seat is provided with a through hole penetrating from inside to outside, and the through hole, the inner cavity of the cylindrical valve seat and the valve port jointly form a steam passing channel.

3. An oil well steam injection regulating device as claimed in claim 2, wherein the transmission rod is provided with a forward rotation stop block and a reverse rotation stop block which protrude radially from the valve core on the side of the valve core facing away from the valve port, the inner wall of the cylindrical valve seat near one end of the valve port is provided with a forward stop structure which stops the forward rotation stop block in the forward rotation direction, the forward stop block and the forward stop structure together form the forward rotation stop structure, the side of the sealing plate facing the valve port is provided with a reverse stop structure which stops the reverse rotation stop block in the reverse rotation direction, and the reverse rotation stop block and the reverse stop structure together form the reverse rotation stop structure.

4. An oil well steam injection regulating device as claimed in claim 2 or 3, wherein the valve port is an inward-tapering port, and the valve core has an outer conical surface adapted to the inward-tapering port.

5. An oil well steam injection adjusting device as claimed in claim 1, 2 or 3, wherein a rotating handle is mounted at one end of the transmission rod facing away from the valve core, and the rotating handle forms the operating structure.

6. An oil well steam injection regulating device as claimed in claim 5, wherein the blanking plug is provided with axially arranged scales, the rotating handle is provided with an indicating structure matched with the scales, and the opening degree of the steam passage can be observed through the indicating structure when the rotating handle is rotated reversely to enable the valve core to gradually open the steam passage.

7. An oil well steam injection regulating device as claimed in claim 6, wherein the rotating handle is provided with a sleeve which is fitted with the plug bush, the scale is provided on the outer peripheral surface of the plug which is fitted with the sleeve bush, and the end surface of the sleeve which abuts against the plug can indicate the scale when the transmission rod moves axially relative to the valve seat.

8. An oil well steam injection adjustment device according to claim 6, wherein the twist grip is axially adjustably mounted on the drive rod.

9. An oil well steam injection adjusting device according to claim 1, 2 or 3, wherein the hole arranged in the blanking plug for the transmission rod to pass through is a stepped hole, the large-diameter end of the stepped hole is arranged close to the operating structure, sealing filler is filled in the stepped hole, a pressing cap is arranged at the orifice of the stepped hole close to the operating structure, the transmission rod passes through the pressing cap, and the pressing cap is used for compacting the sealing filler to ensure the sealing between the blanking plug and the transmission rod.

10. An oil well steam injection adjusting device as claimed in claim 9, wherein the inner diameter of the small diameter end of the stepped hole is larger than the outer diameter of the transmission rod, and an internal thread section is provided on the inner peripheral surface thereof, the internal thread section being adapted to a thread section of the transmission rod which is in threaded engagement with the valve seat.

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