A rotating press-in device for polished rod sealing packing

Abstract

The present invention relates to a device for rotating packing for a bare rod seal. It mainly solves the problem that the existing method for adding packing requires disassembling and assembling the packing gland, which is inefficient and time-consuming and labor-intensive. It is characterized in that: the upper end of the packing box body is threadedly connected to the packing gland; the upper end of the packing gland is connected to the packing winder through balls and ball grooves, and the packing gland and the packing winder 4 form a relatively rotatable connection body through balls and ball grooves; the upper end of the winder is connected to the packing presser through balls and ball grooves; the packing presser and the packing winder form a relatively rotatable connection body through balls and ball grooves; the outer circle of the upper end of the packing presser is provided with a presser drive sleeve. The device for rotating packing for a bare rod seal can press the packing into the packing box by rotational force without disassembling and assembling the packing gland, and a section of packing can be reserved on the outside, so that multiple press-ins and tightening can be performed, saving time and labor.

Description

Technical Field

[0001] The invention relates to the technical field of oil field production, in particular to a polished rod sealing packing rotary pressing device. Background Art

[0002] Adding sealing packing to the bare rod of the oil pump is a necessary process to ensure the seal between the bare rod and the packing box and to prevent the reciprocating movement of the bare rod from bringing out crude oil. The reciprocating friction of the bare rod during the long-term operation of the oil pump can easily cause damage to the packing. Replacing the damaged packing or tightening the packing is a necessary task for oil production workers during their daily inspections. The existing technical method of adding packing requires disassembling the packing gland, removing the remaining packing, and pressing it in with special tools or smashing it in with a hammer or crowbar. A large number of tools are required, which are not easy to carry and are time-consuming and labor-intensive. The process of adding packing will result in a long production stoppage time, which can easily cause secondary failures such as well sticking, seriously affecting crude oil production. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the problems of low efficiency and time-consuming and labor-intensive operation of the existing packing addition in the background technology, and to provide a device for rotating and pressing the packing for a bare rod seal. The device for rotating and pressing the packing for a bare rod seal can press the packing into the packing box by means of a rotating force without disassembling the packing gland, and a section of the packing can be reserved on the outside, so that multiple press-ins and tightening can be performed, saving time and effort.

[0004] The present invention solves the problem through the following technical solution: the polished rod sealing packing rotation pressing device, a polished rod sealing packing rotation pressing device, comprises a packing box body, the upper end of the packing box body is threadedly connected to the packing gland;

[0005] The upper end of the packing gland is connected to the packing winder through balls and ball grooves, and the packing gland and the packing winder form a relatively rotatable connection body through balls and ball grooves;

[0006] The upper end of the winding device is connected to the packing presser through the ball and the ball groove; the packing presser and the packing winding device form a relatively rotatable connection body through the ball and the ball groove;

[0007] The top of the packing winder is provided with a driven block, the outer circumference of the upper end of the packing presser is provided with a plurality of slots, and the lower end surface of the slot is provided with an active block that cooperates with the driven block of the winder;

[0008] The outer circle of the upper end of the packing presser is sleeved with a presser driving sleeve.

[0009] Preferably, the packing gland is provided with a gland ball inlet on the outside of the upper end of the packing gland, and a packing gland ball clamping groove is opened inside the upper end of the packing gland; the packing gland ball clamping groove is connected to the gland ball inlet;

[0010] The lower end of the packing winder is provided with a winding device ball lower clamping groove matched with the packing gland ball clamping groove; the packing gland ball clamping groove and the winding device ball lower clamping groove cooperate to form a ball channel, and the gland ball is installed in the ball channel. The packing winder and the packing gland are movably connected through the ball and the ball clamping groove;

[0011] The gland ball inlet is used to install the gland ball into the ball channel formed by the packing gland ball groove and the winding device ball lower groove.

[0012] Preferably, the packing winder has a winding ball upper clamping groove inside the upper end, a winding ball inlet outside the upper end, a square packing inlet on the middle side, and the winding ball inlet is connected to the winding ball upper clamping groove;

[0013] The lower end of the packing presser is provided with a presser ball groove that cooperates with the upper groove of the winder ball. The upper groove of the winder ball cooperates with the presser ball groove to form a ball channel, and the ball channel is equipped with the winder ball. The upper end of the winder is connected to the packing presser through the ball and the ball groove, so as to realize the relative rotation connection between the packing winder and the packing presser.

[0014] Preferably, a screw plug B is installed at the inlet of the gland ball; a screw plug A is installed at the inlet of the winding ball.

[0015] Preferably, the lower end surface of the packing presser is provided with an eccentric packing pressing tongue, and the eccentric pressing tongue can generate pressure by rotation to press the packing entering the winder through the packing inlet of the winder downward into the packing box body.

[0016] Preferably, the middle portion of the packing presser is a polished rod through hole.

[0017] Preferably, the presser drive sleeve is in the shape of a circular ring and is sleeved on the outside of the rotating slot, and the middle opening of the presser drive sleeve is connected to a presser drive handle with a hollow structure.

[0018] Preferably, a thread is provided inside the outer end of the press-in device driving handle, and the inner end of the hollow cavity is equipped with the inner end of the tongue, the outer end of the tongue is connected to the inner end of the tongue connecting rod, the outer end of the tongue connecting rod is provided with a hole, and the tongue direction adjustment handle is inserted into the hole, and the middle section of the tongue connecting rod is sequentially covered with a spring and a spring pressure cap, and the spring and the spring pressure cap are positioned on the tongue connecting rod through the tongue direction adjustment handle; the spring pressure cap is a hollow convex pressure cap, and the inner convex head end is connected to the inner thread of the press-in device driving handle; one end of the tongue spring abuts against the spring pressure cap, and the other end abuts against the end face of the outer end of the tongue.

[0019] Preferably, the inner end surface of the latch tongue is an inclined surface, and one end of the inclined surface of the latch tongue can be embedded in the slot under the pressure of the latch tongue spring.

[0020] Preferably, the interior of the upper end of the packing box body is a packing sealing cavity, and a packing limiting flange is provided at the bottom of the packing sealing cavity; the lower end of the packing box body is a flange, and the packing box body is connected to the well plugger at the upper end of the oil production tree through the flange.

[0021] Compared with the above background technology, the present invention has the following beneficial effects:

[0022] 1. The packing press, packing winder and packing gland are connected by balls, which can automatically wind and press the packing during rotation, saving time and effort and reducing the number of tools needed to be carried.

[0023] 2. The packing adding process is simplified. The packing can enter the packing box through the packing inlet of the winder. The rotating presser can press the packing into the bottom of the packing box layer by layer, which changes the traditional method of removing the packing gland to add packing. The packing can enter the winder through the packing inlet without disassembling the packing gland.

[0024] 3. The present invention can continuously press in the packing without removing the residual packing to achieve the function of sealing the polished rod, thereby reducing environmental pollution.

[0025] 4. Packing can be reserved outside the winder. When the packing is worn, just rotate the presser and the reserved packing will be automatically rolled into the packing box, reducing the number of operators and packing addition times by 50%.

[0026] 5. This technology is applicable to various types of rod pumping units. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Attached Figure 1 It is a front view of the present invention;

[0028] Attached Figure 2 Yes Figure 1 Cross-sectional view rotated 180° horizontally;

[0029] Attached Figure 3 It is a schematic diagram of the structure of the packing winding device of the present invention;

[0030] Attached Figure 4 Yes Figure 3 Sectional view of AA;

[0031] Attached Figure 5 It is a structural schematic diagram of the packing presser of the present invention;

[0032] Attached Figure 6 Yes Figure 5 A cross-sectional view of

[0033] Attached Figure 7 It is a schematic diagram of the structure of the packing gland of the present invention;

[0034] Attached Figure 8 Yes Figure 7 Sectional view of AA;

[0035] Attached Fig. 9 It is a structural schematic diagram of the driver of the press-in device of the present invention;

[0036] Attached Fig.10 Yes Fig. 9 Cross-sectional view of AA.

[0037] In the figure: 1. Packing box body; 2. Packing gland; 3. Packing inlet; 4. Packing winder; 5. Spring pressure cap; 6. Tongue direction adjustment handle; 7. Tongue connecting rod; 8. Presser driving handle; 9. Packing presser; 10. Screw plug A; 11. Screw plug B; 12. Presser driving sleeve; 13. Slot; 14. Winder ball inlet; 15. Bare rod through hole; 16. Eccentric tongue; 17. Winder ball; 18. Tongue spring; 19. Gland ball; 20. Winder ball lower slot; 21. Packing gland ball slot; 22. Presser ball slot; 23. Packing sealing chamber; 24. Packing limiting flange; 25. Flange; 26. Winder ball upper slot; 27. Gland ball inlet; 28. Tongue; 29. ​​Active block; 30. Driven block. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with the accompanying drawings:

[0039] As attached Figure 1 , Attachment Figure 2 As shown, the packing rotation pressing device for the polished rod sealing comprises a packing box body 1 and a packing gland 2. The upper end of the packing box body 1 is threadedly connected to the packing gland 2, and the interior of the upper end is a packing sealing cavity 23 for accommodating the packing to achieve the sealing between the packing and the polished rod; a packing limiting flange 24 is provided at the bottom of the packing sealing cavity 23; the lower end of the packing box body 1 is a flange 25, and the packing box body 1 is connected to the well capping device at the upper end of the oil production tree through the flange 25;

[0040] The upper end of the packing gland 2 is connected to the packing winding device 4 through the ball and the ball groove, and the packing gland 2 and the packing winding device 4 form a relatively rotatable connection body through the ball and the ball groove;

[0041] like Figure 7 , Figure 8 As shown, the packing gland 2 is provided with a gland ball inlet 27 on the outside of the upper end, and a screw plug B11 is installed at the gland ball inlet 27, and a packing gland ball clamping groove 21 is opened inside the upper end of the packing gland 2; the packing gland ball clamping groove 21 is connected to the gland ball inlet 27;

[0042] like Figure 3 , Figure 4As shown, the lower end of the packing winding device 4 is provided with a winding device ball lower clamping groove 20 that cooperates with the packing gland ball clamping groove 21; the packing gland ball clamping groove 21 cooperates with the winding device ball lower clamping groove 20 to form a ball channel, and the ball channel is equipped with a gland ball 19, and the packing winding device 4 is movably connected with the packing gland 2 through the ball and the ball clamping groove; the gland ball inlet 27 is used to load the gland ball 19 into the packing gland ball clamping groove 21 and the winding device The ball channel is formed by the lower ball groove 20, and the plug A10 of the packing gland ball inlet can block the inlet; the top of the packing winding device 4 is provided with a driven block 30, the upper end of the packing winding device 4 is provided with a winding device ball upper groove 26, the upper end of the packing winding device 4 is provided with a winding device ball inlet 14 and a plug A10, and the middle side is provided with a square packing inlet 3, so that the packing can be sent into the packing box without removing the gland; the winding device ball inlet 14 is connected with the winding device ball upper groove 26;

[0043] The upper end of the winding device 4 is connected to the packing presser 9 through the ball and the ball groove; the packing presser 9 and the packing winding device 4 form a relatively rotatable connection body through the ball and the ball groove;

[0044] like Figure 5 , Figure 6 As shown, the hole in the packing presser 9 is a rod through hole 15, and the outer portion of the lower end of the packing presser 9 is provided with a presser ball groove 22 that matches with the winding ball upper groove 26, and the winding ball upper groove 26 cooperates with the presser ball groove 22 to form a ball channel, in which the winding ball 17 is installed; the upper end of the winding device 4 is connected to the packing presser 9 through the ball and the ball groove, and the packing winding device 4 and the packing presser 9 are relatively rotatably connected; the packing presser 9 and the packing winding device 4 form a relatively rotatable connection body through the ball and the ball groove; the outer circumference of the upper end of the packing presser 9 is provided with a plurality of grooves 13, and the lower end surface of the groove 13 is provided with an active block 29 that matches with the winding device driven block 30; the outer circumference of the upper end of the packing presser 9 is sleeved with a presser drive sleeve 12. The lower end surface of the packing presser 9 is provided with a packing eccentric pressing tongue 16 , which can generate pressure by rotation to press the packing entering the winder through the winder packing inlet 3 downward into the packing box 1 .

[0045] like Fig. 9 , Fig.10As shown, the presser drive sleeve 12 is annular and is sleeved on the outside of the rotating slot 13. The presser drive sleeve 12 is connected to the presser drive handle 8 with a hollow structure at the middle opening. The presser drive sleeve 12 and the presser drive handle 8 constitute a driving body; the inner wall of the outer end of the presser drive handle 8 is provided with an internal thread, and the inner end of the hollow cavity of the presser drive handle 8 is provided with the inner end of a latch tongue 28, the outer end of the latch tongue 28 is connected to one end of a latch tongue connecting rod 7, and the other end of the latch tongue connecting rod 7 is provided with a hole for inserting a latch tongue direction adjustment handle 6, the middle section of the latch tongue connecting rod 7 is sequentially sleeved with a spring 18 and a spring pressure cap 5, and the spring 18 and the spring pressure cap 5 are positioned on the latch tongue connecting rod 7 through the latch tongue direction adjustment handle 6; one end of the latch tongue spring 18 abuts against the spring pressure cap 5, and the other end abuts against the outer end face of the latch tongue 28. The spring pressure cap 5 is a hollow convex pressure cap, and the inner convex end is connected with the inner thread of the press-in device driving handle 8; the spring pressure cap 5 is rotated to compress the tongue spring 18 to make the guide tongue 28 expand and contract, and the tongue direction adjustment handle 6 is rotated to adjust the direction of the guide tongue 28, so that the guide tongue 28 can freely expand and contract and adjust the direction in the hollow cavity of the press-in device driving handle 8 under the action of the tongue spring 18 and the rotation of the tongue direction adjustment handle 6. The inner end surface of the tongue 28 is an inclined surface, and one end of the inclined surface of the tongue 28 can be embedded in the card slot 13 under the pressure of the tongue spring 18, and the one-way rotation of the packing press 9 can be driven by moving the press-in device driving handle 8.

[0046] The packing rotary pressing device for sealing the bare rod is provided with a packing winding device 4 having a winding device ball upper retaining groove 26 and a winding device ball inlet 14 equipped with a winding device ball inlet plug A10, which is used to connect the presser ball retaining groove 22 to achieve the relative rotation connection between the packing winding device 4 and the packing presser 9; a square winding device packing inlet 3 is opened on the side of the middle part of the packing winding device 4, so that the packing can be sent into the packing box without removing the gland; a winding device ball lower retaining groove 20 is provided on the outside of the lower end of the packing winding device 4, which is connected to the packing gland ball retaining groove 21 through the gland ball 19 to achieve the movable connection between the packing winding device 4 and the packing gland 2.

[0047] The presser ball groove 22 at the lower end of the packing presser 9 can be connected to the winding ball upper groove 26 through the winding ball 17, so that the packing presser 9 and the packing winding device 4 form a relatively rotatable connection body. The packing presser 9 is provided with a light rod through hole 15, and the presser can be mounted on the light rod. The outer circumference is provided with multiple rotation grooves 13, which are used to clamp the presser rotation tongue 28 to drive the packing presser 9 to rotate; the lower end surface of the packing presser 9 rotation groove 13 is provided with a winding device active block 29, which can contact with the winding device driven block 30 to transmit power, rotate the packing winding device, and wind the packing on the light rod. The eccentric pressing tongue 16 set on the lower end surface of the packing presser 9 can generate pressure through rotation, and the packing entering the winding device through the winding device packing inlet 3 is pressed downward into the packing box body 1. The tongue direction adjustment handle 6 can be rotated 180 degrees to realize the driving direction of the presser driving handle 8. Moving the presser driving handle 8 can realize the unidirectional rotation of the packing presser 9. The driving form of the packing presser 9 can be made into a gear worm manual drive mode, and a motor can also be added to form a gear rack electric drive mode.

[0048] The working process of the polished rod sealing packing rotary pressing device for adding packing and tightening packing is as follows:

[0049] 1. The device is connected to the well sealer at the upper end of the oil production tree through the bottom flange of the packing box.

[0050] 2. When packing needs to be added to the bare rod of the oil pump, loosen the packing gland to expose the packing entrance of the winding device.

[0051] 3. Apply a small amount of grease to the packing, and insert one end of the packing into the cavity between the packing winder and the bare rod from the packing inlet.

[0052] 4. Adjust the direction adjustment handle of the tongue in the driver handle of the presser to the clockwise direction, and move the driver handle of the presser.

[0053] 5. Pull the driving handle repeatedly, and the active block at the lower end of the packing presser will collide with the driven block of the winding device at a certain angle, so that the presser and the winding device can rotate together. The winding device pushes the packing to wind around the polished rod. As the angle of the pressing tongue increases, the packing will be forced into the sealing cavity.

[0054] 6. After the packing is pressed into the sealing cavity layer by layer, the packing press will be unable to rotate, and a section of packing should be reserved at the packing entrance.

[0055] 7. Tighten the packing gland and move it downward to further compact the packing until it reaches the sealing standard.

[0056] 8. When the packing is worn after being used for a period of time, loosen the packing presser and press the sealing cavity layer by layer according to the above steps to fill the worn space with the reserved packing. After compaction, tighten the packing gland until the requirements are met. The reserved end can be tightened multiple times. Reducing the number of additions means reducing downtime. Repeating the cycle without removing residual packing can reduce environmental pollution.

Claims

1. A device for rotating and pressing a packing for a polished rod, comprising a packing box (1), characterized in that: The upper end of the packing box body (1) is threadedly connected to the packing gland (2); The upper end of the packing gland (2) is connected to the packing winding device (4) via a ball and a ball groove, and the packing gland (2) and the packing winding device (4) form a relatively rotatable connection body via the ball and the ball groove; The upper end of the packing winding device (4) is connected to the packing pressing device (9) via a ball and a ball groove; the packing pressing device (9) and the packing winding device (4) form a relatively rotatable connection body via the ball and the ball groove; The top of the packing winder (4) is provided with a driven clamping block (30), the outer circumference of the upper end of the packing presser (9) is provided with a plurality of clamping grooves (13), and the lower end surface of the clamping groove (13) is provided with an active clamping block (29) that cooperates with the driven clamping block (30) of the winder; The upper outer circumference of the packing presser (9) is sleeved with a presser drive sleeve (12); The press-in device driving sleeve (12) is in the shape of a circular ring and is sleeved on the outside of the rotating slot (13). The middle opening of the press-in device driving sleeve (12) is connected to the press-in device driving handle (8) with a hollow structure. The outer end of the push-in device driving handle (8) is provided with a thread inside, and the inner end of the hollow cavity is provided with the inner end of the latch tongue (28), and the outer end of the latch tongue (28) is connected to the inner end of the latch tongue connecting rod (7), and the outer end of the latch tongue connecting rod (7) is provided with a hole, and the latch tongue direction adjustment handle (6) is inserted into the hole; the middle section of the latch tongue connecting rod (7) is sequentially provided with a latch tongue spring (18) and a spring pressure cap (5); the spring pressure cap (5) is a hollow convex pressure cap, and the inner end convex head end is connected to the inner thread of the push-in device driving handle (8); one end of the latch tongue spring (18) abuts against the spring pressure cap, and the other end abuts against the outer end surface of the latch tongue (28); The packing gland (2) is provided with a gland ball inlet (27) at the outer portion of the upper end, and a packing gland ball retaining groove (21) is provided at the inner portion of the upper end; the packing gland ball retaining groove (21) is communicated with the gland ball inlet (27); The packing winder (4) is provided with a winding device ball lower clamping groove (20) on the outside of the lower end thereof, which cooperates with the packing gland ball clamping groove (21); the packing gland ball clamping groove (21) cooperates with the winding device ball lower clamping groove (20) to form a ball channel, in which a gland ball (19) is installed, and a rotatable connection between the packing winder (4) and the packing gland (2) is achieved through the ball and the ball clamping groove; The gland ball inlet (27) is used to load the gland ball (19) into a ball channel formed by the packing gland ball groove (21) and the winding device ball lower groove (20); The packing winder (4) has a winding ball upper retaining groove (26) disposed inside the upper end, a winding ball inlet (14) disposed outside the upper end, and a square packing inlet (3) disposed on the side of the middle portion, the winding ball inlet (14) being in communication with the winding ball upper retaining groove (26); The lower end of the packing presser (9) is provided with a presser ball groove (22) that cooperates with the winding device ball upper groove (26). The winding device ball upper groove (26) cooperates with the presser ball groove (22) to form a ball channel. The ball channel contains a winding device ball (17). The upper end of the packing winder (4) is connected to the packing presser (9) via the ball and the ball groove, thereby realizing relative rotation connection between the packing winder and the packing presser.

2. The device for rotating and pressing the polished rod sealing packing according to claim 1, characterized in that: A screw plug B (11) is installed at the ball inlet (27) of the gland; a screw plug A (10) is installed at the ball inlet (14) of the winding device.

3. The device for rotating and pressing the polished rod sealing packing according to claim 1, characterized in that: The lower end surface of the packing presser (9) is provided with a packing eccentric pressing tongue (16), and the eccentric pressing tongue generates pressure by rotation, so as to press the packing entering the winder through the packing inlet of the winder downward into the packing box.

4. The device for rotating and pressing the polished rod sealing packing according to claim 1, characterized in that: The middle part of the packing presser (9) is a polished rod through hole (15).

5. The device for rotating and pressing the polished rod sealing packing according to claim 1, characterized in that: The inner end surface of the latch tongue (28) is an inclined surface, and one end of the latch tongue inclined surface can be embedded in the latch groove under the pressure of the latch tongue spring.

6. The device for rotating and pressing the polished rod sealing packing according to claim 1, characterized in that: The interior of the upper end of the packing box body (1) is a packing sealing cavity (23), and a packing limiting flange (24) is provided at the bottom of the packing sealing cavity (23); the lower end of the packing box body (1) is a flange (25), and the packing box body is connected to the well plug at the upper end of the oil production tree through the flange.

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