Polish rod sealer with deviation-adjusting compensation function

Abstract

The polish rod sealer comprises a polish rod, the polish rod penetrates through a pressing cap, the pressing cap is in threaded connection with the upper end of an upper packing cylinder, an annular fixing groove is formed in the side, close to the polish rod, of the pressing cap, and a first absorption piece is placed in the annular fixing groove; an annular top plate used in cooperation with the first absorption piece is installed on the top of the outer side of the pressing cap, the lower end of the upper packing barrel is connected with an oil injection barrel, the lower end of the oil injection barrel is connected with the upper end of the lower packing barrel through a connecting barrel, and a bottom cover mechanism is detachably installed at the bottom of the lower packing barrel and comprises two semicircular arcs. An arc-shaped containing groove is formed in the inner side of the semicircular arc, and a second absorption piece is placed in the arc-shaped containing groove. According to the polish rod sealer with the deviation adjustment compensation function, in order to solve the problem that petroleum adhering to a polish rod of an existing polish rod sealer can be carried out of the sealer through the sealer, the annular fixing groove is formed in the side, close to the polish rod, of the pressing cap.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of polished rod sealers, in particular to a polished rod sealer with deviation compensation. BACKGROUND

[0002] The polished rod sealer is a sealing device for the wellhead of the oil pumping unit in the oil field, and mainly functions to prevent oil and gas leakage and ensure normal operation of the oil pumping system.

[0003] After searching, it is found that the prior art such as the announcement number CN109611049B oil production polished rod sealer, including the pressure cap, the upper packing barrel, the oil injection cylinder, the oil injector, the connecting cylinder, the lower packing barrel, the deviation adjusting device, the pressure cap is connected with the upper end of the upper packing barrel through the screw thread, the upper packing barrel is equipped with the upper packing, the upper end of the upper packing is equipped with the upper golan, the upper end of the upper golan is connected with the pressure cap, the lower end of the upper golan is connected with the upper packing, the lower end of the upper packing is equipped with the partition, the inner side of the partition is sleeved with the friction sealing ring, the lower end of the upper packing barrel is connected with the oil injection cylinder, the sidewall of the oil injection cylinder is connected with the oil storage barrel, the oil storage barrel is equipped with the oil injector, the lower end of the oil injection cylinder is connected with the upper end of the lower packing barrel through the connecting cylinder, the lower packing barrel is equipped with the lower packing, the upper end of the lower packing is equipped with the lower golan, the upper end of the lower golan is connected with the lower end of the connecting cylinder, the lower part inner wall of the upper packing barrel and the lower part inner wall of the lower packing barrel are all equipped with the deviation adjusting device.

[0004] In summary, the existing polished rod sealer is convenient to install and replace, and increases the convenience of use, but the oil adhered to the polished rod of the existing polished rod sealer will be carried to the outside of the sealer through the sealer, causing resource waste, therefore the polished rod sealer with deviation compensation is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a polished rod sealer with deviation compensation to solve the problem that the oil adhered to the polished rod of the existing polished rod sealer will be carried to the outside of the sealer through the sealer as proposed in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: A kind of optical rod seal with bias compensation, including optical rod, the optical rod passes through pressure cap, and pressure cap is threadedly connected with the upper end of upper packing bush, annular fixed groove is set to the side of pressure cap close to optical rod, and first absorbing sheet is placed in annular fixed groove, annular top plate for cooperating with first absorbing sheet is installed on the top of the outside of pressure cap, the lower end of upper packing bush is connected with oil injection cylinder, and the lower end of oil injection cylinder is connected with the upper end of lower packing bush by connecting cylinder, bottom cover mechanism is detachably installed on the bottom of lower packing bush, bottom cover mechanism includes two groups of semicircles, and arc placement groove is set to the inner side of semicircle, second absorbing sheet is placed in arc placement groove, and two groups of semicircles are detachably connected by bolt and nut.

[0007] Preferably, the annular top plate includes an annular top plate body, and the annular top plate body is connected to an outer ring body provided on the outside of the pressure cap through a driving rod symmetrically arranged thereon.

[0008] Through the above technical scheme: it is convenient to replace the first absorbing sheet.

[0009] Preferably, the outer ring body is connected to the top of the outside of the pressure cap through a spring symmetrically arranged thereon.

[0010] Through the above technical scheme: it is convenient to limit the outer ring body.

[0011] Preferably, the oil injection cylinder is connected to an oil tank, and an oil injector is provided on the oil tank.

[0012] Through the above technical scheme: it is convenient to perform oil injection operation.

[0013] Preferably, a bias adjustment device is provided on the inner wall of the lower part of the upper packing bush and the inner wall of the lower part of the lower packing bush.

[0014] Through the above technical scheme: it is convenient to perform bias compensation operation.

[0015] Preferably, a fixing edge is installed on the top of the outside of the semicircle, and the fixing edge is detachably connected to the lower packing bush through a bolt.

[0016] Through the above technical scheme: it is convenient to replace the second absorbing sheet.

[0017] Compared with the prior art, the beneficial effects of the utility model are that the light rod sealing device with deviation compensation, in order to solve the problem that the oil adhered to the light rod of the existing light rod sealing device is carried to the outside of the sealing device through the sealing device, an annular fixed groove is formed on the side of the pressing cap close to the light rod, a first absorbing sheet is arranged in the annular fixed groove, an annular top plate used in cooperation with the first absorbing sheet is installed on the top of the outer side of the pressing cap, an oil injection cylinder is connected to the lower end of the upper packing cylinder, the lower end of the oil injection cylinder is connected to the upper end of the lower packing cylinder through a connecting cylinder, a bottom cover mechanism is detachably installed on the bottom of the lower packing cylinder, the bottom cover mechanism comprises two semicircles, an arc-shaped placing groove is formed in the inner side of the semicircle, a second absorbing sheet is arranged in the arc-shaped placing groove, and the two semicircles are detachably connected through bolts and nuts, so that the first absorbing sheet and the second absorbing sheet can absorb the oil on the outer side of the light rod to a certain extent, thereby reducing the possibility of oil overflow. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole front view cross section structure schematic diagram of the utility model;

[0019] Figure 2 It is the utility model Figure 1 It is an enlarged structure schematic diagram of A in the utility model;

[0020] Figure 3 It is the utility model Figure 2 It is an enlarged structure schematic diagram of C in the utility model;

[0021] Figure 4 It is the utility model Figure 1 It is an enlarged structure schematic diagram of B in the utility model;

[0022] Figure 5 It is a semicircle connection relationship schematic diagram of the utility model.

[0023] In the drawing: 1, light rod; 2, pressing cap; 3, upper packing cylinder; 4, first absorbing sheet; 401, annular top plate; 4011, annular top plate body; 4012, driving rod; 4013, outer ring body; 4014, spring; 5, oil injection cylinder; 501, oil injector; 6, connecting cylinder; 7, lower packing cylinder; 8, bottom cover mechanism; 801, semicircle; 8011, fixed edge; 802, second absorbing sheet; 9, deviation adjusting device. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Referring to Figures 1-5 The utility model provides a kind of technical scheme: a polished rod sealer with bias compensation, polished rod 1 passes through pressure cap 2, and pressure cap 2 is threadedly connected with the upper end of upper packing box 3, the lower end of upper packing box 3 is connected with oil injection cylinder 5, and the lower end of oil injection cylinder 5 is connected with the upper end of lower packing box 7 through connecting cylinder 6, and bottom cover mechanism 8 is detachably installed at the bottom of lower packing box 7.

[0026] Specifically, annular fixed groove is formed on the side of pressure cap 2 close to polished rod 1, and first absorbing sheet 4 is placed inside annular fixed groove, and ring-shaped top plate 401 used in cooperation with first absorbing sheet 4 is installed on the top of the outer side of pressure cap 2, ring-shaped top plate 401 includes ring-shaped top plate body 4011, and ring-shaped top plate body 4011 is connected with outer ring body 4013 arranged on the outer side of pressure cap 2 through driving rod 4012 arranged symmetrically, polished rod 1 is located inside outer ring body 4013, and does not contact outer ring body 4013, and outer ring body 4013 is connected with the top of the outer side of pressure cap 2 through spring 4014 arranged symmetrically.

[0027] When it is necessary to replace first absorbing sheet 4, pressure cap 2 is removed, and after removal, outer ring body 4013 is pressed down, at this time, spring 4014 is in compressed state, and ring-shaped top plate body 4011 is driven to move by outer ring body 4013 through driving rod 4012, so that first absorbing sheet 4 is pushed out from inside annular fixed groove by ring-shaped top plate body 4011.

[0028] Further explanation, oil injection cylinder 5 is connected with oil tank, and oil injector 501 is arranged on the oil tank, and bias adjusting device 9 is arranged on the inner wall of the lower part of upper packing box 3 and the inner wall of the lower part of lower packing box 7, and oil injector 501 and bias adjusting device 9 are prior art, and specific structure and use method can refer to the related contents in the publication number CN109611049B oil production polished rod sealer.

[0029] Specifically, bottom cover mechanism 8 includes two groups of semicircular arcs 801, and arc-shaped placing groove is formed on the inner side of semicircular arc 801, and second absorbing sheet 802 is placed inside arc-shaped placing groove, and the two groups of semicircular arcs 801 are detachably connected through bolt and nut, and fixed edge 8011 is installed on the top of the outer side of semicircular arc 801, and semicircular arc 801 is detachably connected with lower packing box 7 through bolt.

[0030] When it is necessary to replace second absorbing sheet 802, first separate bottom cover mechanism 8 from lower packing box 7, remove bottom cover mechanism 8, and after removal, separate the two groups of semicircular arcs 801, so that second absorbing sheet 802 arranged on the inner side thereof can be replaced.

[0031] When in use, the first absorbing sheet 4 and the second absorbing sheet 802 can absorb the oil outside the light rod 1 to a certain extent, thereby reducing the possibility of oil overflow.

[0032] The terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only a simplified description for the convenience of describing the utility model, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the protection scope of the utility model.

[0033] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A smooth rod seal with offset compensation, comprising a smooth rod (1), characterized in that: The light rod (1) passes through the pressure cap (2), and the pressure cap (2) is threaded to the upper end of the upper plate root cylinder (3). The pressure cap (2) has an annular fixing groove on the side near the light rod (1), and a first absorbent plate (4) is placed inside the annular fixing groove. An annular top plate (401) that works with the first absorbent plate (4) is installed on the top of the outer side of the pressure cap (2). The lower end of the upper plate root cylinder (3) is connected to an oil injection cylinder (5), and the lower end of the oil injection cylinder (5) is connected to the upper end of the lower plate root cylinder (7) through a connecting cylinder (6). A bottom cover mechanism (8) is detachably installed at the bottom of the lower plate root cylinder (7). The bottom cover mechanism (8) includes two sets of semicircular arcs (801), and an arc-shaped placement groove is opened on the inner side of the semicircular arcs (801). A second absorbent plate (802) is placed inside the arc-shaped placement groove, and the two sets of semicircular arcs (801) are detachably connected by bolts and nuts.

2. A smooth rod seal with offset compensation according to claim 1, characterized in that: The annular top plate (401) includes an annular top plate body (4011), and the annular top plate body (4011) is connected to the outer ring body (4013) provided on the outside of the pressure cap (2) by symmetrically arranged drive rods (4012).

3. A smooth rod seal with offset compensation according to claim 2, characterized in that: The outer ring (4013) is connected to the top of the outer side of the pressure cap (2) by symmetrically arranged springs (4014).

4. A smooth rod seal with offset compensation according to claim 1, characterized in that: The side wall of the oil injection cylinder (5) is connected to an oil container, and an oil injector (501) is provided on the oil container.

5. A smooth rod seal with offset compensation according to claim 1, characterized in that: The lower inner wall of the upper root tube (3) and the lower inner wall of the lower root tube (7) are both provided with an adjustment device (9).

6. A smooth rod seal with offset compensation according to claim 1, characterized in that: A fixed edge (8011) is installed on the top of the outer side of the semicircular arc (801), and the fixed edge (8011) is detachably connected to the lower root tube (7) by bolts.

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