CN211422564U

CN211422564U - Draw packing device

Info

Publication number: CN211422564U
Application number: CN201921745972.8U
Authority: CN
Inventors: 王传清; 忽明涛; 郑伟华; 孙浩; 李恭元; 王海超; 罗瀚; 孙军章; 陈斌
Original assignee: China Petroleum and Chemical Corp; Sinopec Henan Oilfield Branch Co No 2 Oil Production Plant
Current assignee: China Petroleum and Chemical Corp; Sinopec Henan Oilfield Branch Co No 2 Oil Production Plant
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-09-04
Anticipated expiration: 2029-10-17

Abstract

The utility model relates to a draw packing device. Draw packing device and include first sleeve and second sleeve, be equipped with on at least one of two sleeves and pull the handle, and be equipped with on one of them sleeve and take out the shovel, first, second sleeve all has the lateral opening that can supply the polished rod lateral to pack into, two sleeves cooperate and enclose the polished rod inside, first, have on the second sleeve one of them in the vertical direction suit prevent both axial disengaged anti-disengaging structure when another in, still have on two sleeves keep both at the staggered retaining structure in lateral opening's circumferential position department. The two sleeves are sleeved on the polished rod, so that the lateral openings of the two sleeves are staggered to enclose the polished rod inside, the anti-disengaging structure can prevent the two sleeves from being axially disengaged, the retaining structure keeps the two sleeves at the staggered circumferential positions of the lateral openings, and therefore the lateral openings on the two sleeves are always kept in a staggered state in the process that the sleeve is driven to rotate by rotating the handle, and the sleeves are prevented from falling off from the polished rod.

Description

Draw packing device

Technical Field

The utility model relates to a draw packing device.

Background

In the production process of an oil well, the packing is worn after being used for a period of time, and in order to ensure the sealing effect and prevent oil, gas and water in the oil well from overflowing to pollute the well mouth, the packing needs to be replaced regularly. The conventional packing digging operation is to look for a packing notch in a packing box by a straight line, and then forcibly rotate the straight line along the direction of the packing notch to dig out the packing from the packing box. The operation wastes time and labor, and if the polished rod deviation is large, the packing is more difficult to take out, so that the production efficiency of the oil well is seriously influenced.

The utility model discloses a chinese utility model patent that the bulletin number is CN201116456Y discloses an oil well packing extractor, and this extractor includes the barrel, is equipped with the installation mouth way that can supply the oil well polished rod side direction to pack into on the barrel, and the shovel that takes out of blade is scraped for having to the barrel front end, scrapes the blade and is equipped with spiral packing slide at the back, still installs the handle on the barrel. When the oil well packing extractor is used, the oil well packing extractor is sleeved on an oil well polished rod, the scraping blade is driven to cut into the packing incision by the rotating handle, and the packing extractor continues to rotate to enable the packing to be upwards screwed out along the spiral packing slideway.

Compared with the traditional packing taking tool, the existing packing extractor is more convenient to use, but also has the following problems: because the cylinder body is of an opening structure, the cylinder body is not provided with a blocking structure which can block the polish rod after the polish rod of the oil well is laterally arranged in the cylinder body, and the cylinder body is easy to fall off from the polish rod of the oil well in the rotating process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a draw packing device to solve the problem that the barrel drops from the oil well polished rod easily in the current packing extractor use.

In order to achieve the above object, the utility model discloses draw packing device's technical scheme is:

draw packing device and include first sleeve and second sleeve, be equipped with on at least one of two sleeves and pull the handle, and be equipped with on one of them sleeve that the axial is stretched out, be used for cutting into the shovel that takes out in the packing, first, the second sleeve all has the side direction opening that can supply the polished rod side to pack into, two sleeves cooperate and enclose the polished rod inside, first, have on the second sleeve one of them in the upper and lower direction suit prevent both axial off-going anti-disengaging structure when in another, still have on two sleeves with both keep the retaining structure in the staggered circumferential position department of side direction opening.

The utility model has the advantages that: after the two sleeves are sleeved on the polished rod, the lateral openings of the two sleeves are staggered to enclose the polished rod inside, the anti-disengaging structure can prevent the two sleeves from being axially disengaged, the holding structure holds the two sleeves at the staggered circumferential positions of the lateral openings, so that in the process of driving the sleeves to rotate by rotating the handle, the lateral openings on the two sleeves are always kept in the staggered state to enclose the polished rod inside, and the sleeves can be prevented from falling off from the polished rod.

Furthermore, the first sleeve and the second sleeve are assembled in a spiral mode through an internal thread section on one sleeve and an external thread section on the other sleeve, and the thread sections on the two sleeves form the anti-disengaging structure. The two sleeves are assembled together in a spiral mode, the inner thread section and the outer thread section are in pressing contact, and only when the thread sections are damaged, the two sleeves can be axially displaced, so that the axial anti-disengaging effect is good.

Furthermore, the retaining structure is a stop pin structure which is arranged on the wall of the sleeve at the outer side in a penetrating manner, and when the sleeve at the inner side is screwed in the sleeve at the outer side, the stop pin structure is stopped with two sides of the lateral opening on the sleeve at the inner side. The sleeve positioned on the inner side is limited to rotate relative to the sleeve positioned on the outer side through the stop pin structure, the structure is simple, and the stop is reliable.

Furthermore, the stop pin structure is a radial bolt screwed on the cylinder wall of the sleeve at the outer side. The radial bolt can be rotated outwards when the polish rod is installed, so that the polish rod is prevented from being interfered, the radial bolt can be rotated inwards after the polish rod is installed, and the radial bolt is in stop fit with two sides of the lateral opening on the sleeve positioned at the inner side; meanwhile, the length of the radial bolt screwed into the sleeve can be adjusted according to the diameter of the polish rod, and the use is flexible.

On the basis that the two sleeves are assembled in a spiral mode through the inner thread section and the outer thread section, the sleeve provided with the outer thread section further comprises a large-diameter section at the upper end and a small-diameter section at the lower end, and the outer thread section is located on the outer peripheral surface of the large-diameter section.

On the basis of any one of the above schemes, the fixing position of the taking-out shovel is further limited, and the taking-out shovel is positioned on the sleeve close to the lateral opening.

On the basis of any one of the above schemes, the structure of the taking-out shovel is further limited, the taking-out shovel comprises a straight extension section and a spiral section connected to the tail end of the straight extension section, and the end part of the spiral section is inclined. The linear extension section enables the taking-out shovel to go deep into the packing box and dismantle the packing at a deeper position; the spiral section at the tail end of the linear extension section can enable the packing to be lifted upwards along the spiral direction, so that the packing is more convenient and labor-saving; the end part of the spiral section is designed to be inclined so that the spiral section can smoothly cut into the packing notch.

On the basis of any one of the above schemes, the width of the lateral opening of at least one of the first sleeve and the second sleeve is smaller than the diameter of the sleeve in which the lateral opening is located. After the polished rod is installed, the sleeve can block the polished rod in the circumferential direction in a large range, so that the polished rod is prevented from easily slipping from the sleeve.

Drawings

Fig. 1 is a schematic structural view of a specific embodiment of the packing taking device of the present invention;

FIG. 2 is a schematic view of the apparatus of FIG. 1 shown in the assembled state onto and removed from a polish rod;

FIG. 3 is a schematic view of the second sleeve of FIG. 2 being screwed into the first sleeve;

FIG. 4 is a schematic view of the first sleeve of FIG. 1;

in the figure: 1-a first sleeve; 101-internal thread section; 102-a threaded hole; 103-blocking cover; 2-a second sleeve; 201-external thread section; 3-lateral opening; 4-a radial bolt; 5-pulling the handle; 6, taking out the shovel; 601-a straight extension; 602-helical section.

Detailed Description

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

The utility model discloses a draw packing apparatus's embodiment, as shown in fig. 1 to fig. 4, including first sleeve 1 and second sleeve 2, be equipped with internal thread section 101 on the internal face of first sleeve 1, be equipped with external thread section 201 on the outer peripheral face of

second sleeve

2, 2 spiral assembly of second sleeve are in first sleeve 1. The second sleeve 2 includes a large diameter section at an upper end and a small diameter section at a lower end, and the external thread section 201 is located on an outer circumferential surface of the large diameter section. The first sleeve and the second sleeve are respectively provided with a lateral opening 3 for the polish rod to be laterally installed, the polish rod can be enclosed when the lateral openings 3 on the two sleeves are staggered, and the device can be taken down from the polish rod when the lateral openings 3 on the two sleeves are in the same orientation. In order to block the polished rod in the circumferential direction in a large range after the polished rod is installed in the sleeve, the width of the lateral opening 3 on the first sleeve and the width of the lateral opening 3 on the second sleeve are both smaller than the diameter of the sleeve on which the polished rod is arranged.

As shown in fig. 3 and 4, a blocking cover 103 is arranged at the upper end of the first sleeve 1, a threaded hole 102 is arranged on the cylinder wall of the first sleeve 1, a radial bolt 4 is screwed in the threaded hole 102, when the second sleeve 2 rotates to be in contact with the blocking cover 103 on the first sleeve 1, the lateral opening 3 on the second sleeve 2 is staggered with the lateral opening 3 on the first sleeve 1, the lateral opening 3 on the second sleeve 2 is opposite to the threaded hole 102 on the cylinder wall of the first sleeve 1, at this time, the radial bolt 4 is screwed in the threaded hole 102, the radial bolt 4 can be blocked with two sides of the lateral opening 3 on the second sleeve 2, the second sleeve 2 can only rotate slightly relative to the first sleeve 1, and then the second sleeve is blocked by the radial bolt 4 and cannot rotate continuously, so that the two sleeves are kept at the staggered circumferential positions of the lateral openings 3. The portion of the radial bolt 4 projecting into the sleeve is not in contact with the polish rod.

Still be equipped with on the first sleeve 1 and pull handle 5, it is more convenient to change hands when rotating the sleeve for operating personnel, will pull handle 5 and establish to two, two pull handle 5 and through the center of first sleeve 1 about 3 symmetrical arrangement of side opening on the first sleeve 1 and two connection lines of pulling 5 mounted position of handle.

The second sleeve 2 is provided with a taking-out shovel 6 which axially extends and is used for cutting into the packing, and the taking-out shovel 6 is positioned on the small-diameter section and close to the lateral opening 3. The removing shovel 6 includes a straight extension 601 and a spiral section 602 connected to an end of the straight extension 601, and the spiral section 602 is integrally formed with the straight extension 601. In order to facilitate the spiral section 602 to smoothly cut into the packing cut, the end of the spiral section 602 is inclined. The straight extension section 601 enables the taking-out shovel 6 to go deep into the packing box, the packing at a deeper position is dismantled, the end of the spiral section 602 is cut into the packing notch and then continues to rotate downwards, the packing moves upwards along the spiral direction of the spiral section 602, and the packing is lifted out more conveniently.

When the polish rod is used, the second sleeve 2 is firstly screwed in the first sleeve 1, the top of the second sleeve 2 is away from the blocking cover 103 by a certain distance, the lateral openings 3 on the two sleeves face the same direction, and the polish rod is laterally arranged in the first sleeve and the second sleeve; then, rotating the first sleeve 1 or the second sleeve 2 until the top of the second sleeve 2 is contacted with the blocking cover 103, wherein the lateral opening 3 on the second sleeve 2 is over against the threaded hole 102 on the wall of the first sleeve 1, and the radial bolt 4 is screwed in the threaded hole 102 and is not contacted with the polish rod which is enclosed in the two sleeves; and then the handle 5 is turned, after the first sleeve 1 and the second sleeve 2 relatively rotate at a slight angle, the radial bolt 4 blocks the second sleeve 2 in the circumferential direction, the handle 5 is turned continuously, the first sleeve and the second sleeve synchronously rotate, the spiral section 602 of the shovel 6 is taken out to be combined with the cut of the packing and then continuously rotate to go down, and the packing goes up along the spiral section 602 until the packing is screwed out of the packing box. After the use is finished, the radial bolt 4 is screwed out, the stop of the second sleeve 2 is released, the lateral openings 3 on the two sleeves are rotated to the positions with the same orientation, and then the device can be taken down from the polished rod. When the first sleeve and the second sleeve are sleeved on the polished rod, the second sleeve 2 can be screwed into the first sleeve 1 after the first sleeve and the second sleeve are sleeved on the polished rod respectively.

In the above embodiment, the second sleeve is screwed into the first sleeve, and the thread section on the two sleeves forms an anti-disengaging structure for preventing the two sleeves from axially disengaging. In other embodiments, the first sleeve may be provided with an external thread section and the second sleeve may be provided with an internal thread section, the first sleeve being screw-fitted into the second sleeve. Or, the lower part of the first sleeve is provided with an inward turning edge, the upper part of the second sleeve is provided with an outward turning edge, the second sleeve is sleeved in the first sleeve from top to bottom, the outward turning edge of the second sleeve is in blocking fit with the inward turning edge of the first sleeve in the axial direction, the inward turning edge and the outward turning edge form an anti-disengaging structure for preventing the two sleeves from axially disengaging, at the moment, an outward bulge protruding outwards in the radial direction can be arranged on the wall of the second sleeve, preferably, the outward bulge is arranged on the opposite side of a lateral opening on the second sleeve, when the second sleeve is sleeved in the first sleeve, the outward bulge on the second sleeve corresponds to the lateral opening on the first sleeve, after the second sleeve is sleeved in the first sleeve, the outward bulge on the second sleeve is clamped at the lateral opening on the first sleeve and blocked with the two sides of the lateral opening on the first sleeve, so as to realize the circumferential rotation stopping of the first sleeve and the second sleeve, at the moment, the outward bulge on the second sleeve forms a maintaining position where the two sleeves are maintained at the circumferential position of And (5) structure.

In the above embodiment, the radial bolt is screwed on the first sleeve, and after the two sleeves are screwed in place, the radial bolt and the two sides of the lateral opening on the second sleeve are blocked so as to keep the lateral openings of the two sleeves at staggered circumferential positions. In other embodiments, a radially extending limit pin may be movably inserted through the wall of the first sleeve, and the two sleeves are locked with the two sides of the lateral opening of the second sleeve by the limit pin after being screwed in place, so that the limit pin forms a stop pin structure. Or threaded holes are formed in the opposite sides of the lateral openings in the wall of the second sleeve, when the second sleeve rotates to be in contact with the plug cover on the first sleeve, the second sleeve stops rotating, at the moment, the threaded holes in the second sleeve correspond to the lateral openings in the first sleeve, radial bolts are screwed in the threaded holes in the second sleeve, and the radial bolts stop the two sides of the lateral openings in the first sleeve to keep the lateral openings of the two sleeves at staggered circumferential positions. Of course, a radially extending limit pin may be movably inserted into the second sleeve, and after the two sleeves are screwed into place, the limit pin blocks both sides of the lateral opening of the first sleeve to keep the lateral openings of the two sleeves at staggered circumferential positions.

In other embodiments, the upper portions of the first sleeve and the second sleeve may be respectively provided with a corresponding slot, when the second sleeve rotates to contact with the blanking cover on the first sleeve, the slots on the two sleeves are right opposite, at this time, a key block is inserted into the two slots to realize circumferential rotation stopping of the two sleeves, and at this time, the slots on the two sleeves and the key block form a retaining structure for retaining the two sleeves at circumferential positions staggered with the lateral openings. Or, the cylinder walls of the first sleeve and the second sleeve are respectively provided with a through hole extending in the radial direction, when the second sleeve rotates to be in contact with the plug cover on the first sleeve, the through holes on the cylinder walls of the two sleeves are right opposite, at the moment, a limiting pin simultaneously penetrates through the two through holes to realize circumferential rotation stopping of the two sleeves, so that the two sleeves are kept at the circumferential positions staggered with the lateral openings, and at the moment, the through holes on the two sleeves and the limiting pin form a keeping structure for keeping the two sleeves at the circumferential positions staggered with the lateral openings.

In the above embodiment, the second sleeve is screw-fitted into the first sleeve, the second sleeve includes a large diameter section at an upper end and a small diameter section at a lower end, and the external thread section is located on an outer peripheral surface of the large diameter section. In other embodiments, the second sleeve may have a structure with the same diameter at each part, and the external thread section is disposed at the upper part of the second sleeve.

In the above embodiment, the widths of the lateral openings of the first and second sleeves are smaller than the diameters of the sleeves where the first and second sleeves are located, so that the sleeves can block the polish rod in the circumferential direction in a larger range after the polish rod is installed, and the use is more reliable. In other embodiments, the width of the lateral opening of one of the first sleeve and the second sleeve can be smaller than the diameter of the sleeve; or the width of the lateral openings of the two sleeves is not less than the diameter of the sleeve where the lateral openings are located, and the width of the lateral openings cannot be too large at the moment, so that the polished rod cannot be separated from the sleeves after the lateral openings of the two sleeves are staggered.

The structure of the taking-out shovel and the fixing position of the taking-out shovel on the sleeve can be flexibly changed, for example, in other embodiments, the taking-out shovel is not provided with a linear extending section, the whole taking-out shovel is set to be a spiral structure, and the end part of the spiral structure is set to be an inclined shape; the removal scoop may also be positioned on the second sleeve at any location away from the lateral opening, e.g., on the opposite side of the lateral opening; or the taking-out shovel is arranged on the first sleeve.

In the above embodiment, the pulling handle is provided on the first sleeve. In other embodiments, the pulling handle can be arranged on the second sleeve, or the pulling handle can be arranged on the first sleeve and the second sleeve simultaneously.

Claims

1. The utility model provides a draw packing device, characterized by includes first sleeve and second sleeve, be equipped with on at least one of two sleeves and pull the handle, and be equipped with the axial on one of them sleeve and stretch out, be used for cutting into the shovel that takes out in the packing, first, second sleeve all have the side direction opening that can supply the polished rod side to pack into, two sleeves cooperate and enclose the polished rod inside, have on first, the second sleeve one of them in the upper and lower direction suit prevent axial disjunction's anti-disengaging structure between them when another, still have on two sleeves with both keep the retaining structure in the staggered circumferential position department of side direction opening.

2. The apparatus of claim 1, wherein the first and second sleeves are threadably engaged by an internal threaded portion on one of the sleeves and an external threaded portion on the other of the sleeves, the threaded portions on the two sleeves forming the anti-slip arrangement.

3. The apparatus of claim 2, wherein the retaining structure is a stop pin structure that is inserted through the wall of one of the sleeves, and that stops against the sides of the lateral opening in the other sleeve when the inner sleeve is screwed into the outer sleeve.

4. The apparatus of claim 3, wherein the stop pin structure is a radial bolt screwed onto the wall of the outer sleeve.

5. The apparatus as defined in claim 2, wherein the sleeve having the external thread section includes a large diameter section at an upper end and a small diameter section at a lower end, the external thread section being located on an outer circumferential surface of the large diameter section.

6. The apparatus as claimed in any one of claims 1 to 5 wherein the removal spade is located on the sleeve adjacent the lateral opening.

7. The apparatus as claimed in any one of claims 1 to 5 wherein the removal spade includes a linear extension and a helical portion connected to the end of the linear extension, the end of the helical portion being inclined.

8. The apparatus as defined in any one of claims 1-5, wherein at least one of the first and second sleeves has a lateral opening width less than a diameter of the sleeve in which it is disposed.