Stainless steel deviation-adjusting polish rod sealing device

Abstract

The utility model relates to the technical field of pumping well polish rod sealing, in particular to a stainless steel deviation-adjusting polish rod sealing device which comprises a middle connector, a main body is in threaded connection with the inner wall of the left end of the middle connector, a main body lower pad is placed on the inner wall of the left end of the middle connector, and a blowout prevention ball is placed in an inner cavity of the middle connector. The inner wall of the right end of the middle connector is in threaded connection with an eccentric body, the outer surface of the eccentric body is movably sleeved with a lower pressing cap, and the inner wall of the right end of the lower pressing cap is in threaded connection with a lower connector. The polish rod sealer replaces a common polish rod sealer, has a polish rod sealing function of the common polish rod sealer, and is provided with the blowout prevention ball, after the polish rod is broken and falls into a well, the blowout prevention ball quickly floats upwards under the action of pressure and buoyancy to block a through opening and prevent crude oil from being sprayed out, and the spherical surface on the eccentric body has an automatic angle adjusting function. The sucker rod can be adjusted to a proper angle in an oil well with a certain angle, and eccentric wear is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of oil well polished rod sealing, in particular to a stainless steel polarization-adjusting light rod sealing device. Background Art

[0002] At present, the bare rod of the pumping well connects the pumping unit suspension rope and the downhole pumping rod column to drive the pump to reciprocate. The sealing filler used in the bare rod sealing device of the pumping well is usually annular rubber packing or rubber belt filler. The bare rod seal is indispensable in the oil well pumping accessories, and bare rod seals with different performances have been developed.

[0003] After searching, the announcement number is CN212054584U, and the name is a utility model of a bare rod sealing device for an oil pumping well, including a bare rod. Through research and analysis, it is found that although it has the advantage of convenient replacement of packing, it still has the following disadvantages to a certain extent.

[0004] For example, the rod sealer is installed at the top of the wellhead of the pumping well to seal the rod. However, if the rod breaks during operation, the oil will spray out under the pressure in the well, causing pollution and waste of crude oil. In addition, the pumping well is not very vertical, but has a certain angle. The ordinary rod sealer has no adjustment function and will cause eccentric wear. In order to solve the above technical problems, we designed a stainless steel polarization-adjustable rod seal device. Utility Model Content

[0005] The utility model aims to provide a stainless steel polarization-adjusting light rod sealing device, which has the advantages of sealing, anti-blowout, anti-eccentric wear and monitoring, and solves the problem that if the light rod breaks during operation, the oil will spray out under the pressure in the well, causing pollution and waste of crude oil, and the pumping wells are not very vertical, but have a certain angle, so the ordinary light rod sealer has no adjustment function and will cause eccentric wear.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stainless steel polarizing rod sealing device, including a middle connection, the inner wall of the left end of the middle connection is threadedly connected to a main body, the inner wall of the left end of the middle connection is placed with a main body lower pad, an anti-blowout ball is placed in the inner cavity of the middle connection, the inner wall of the right end of the middle connection is threadedly connected to an eccentric body, the outer surface of the eccentric body is movably sleeved with a lower pressure cap, the inner wall of the right end of the lower pressure cap is threadedly connected to a lower joint, and a detection mechanism is installed on the surface of the lower pressure cap and the eccentric body, and the detection mechanism includes a ring body, a spring and a pressure sensor.

[0007] Preferably, the right side of the ring body is fixedly connected to the left side of the lower pressure cap by bolts, the number of the springs is several, and one end of each spring is fixedly connected to the inner wall of the ring body, the number of the pressure sensors is several, and one side of each spring is fixedly connected to the surface of the eccentric body.

[0008] Preferably, a rubber gasket is placed in the inner cavity of the main body, and the number of the rubber gaskets is several, and the multiple rubber gaskets are placed in contact with each other and stacked.

[0009] Preferably, an upper pad is inserted into the inner wall of the left end of the main body, a pressure cap is threadedly sleeved on the surface of the left end of the main body, the upper pad is located in the inner cavity of the pressure cap, and the surface of the upper pad contacts the inner wall of the pressure cap.

[0010] Preferably, a lower straightening sleeve is placed in the inner cavity of the eccentric body, and a pressing wire is threadedly connected to the inner wall of the left end of the eccentric body, and the right end of the pressing wire is in contact with the left end of the lower straightening sleeve.

[0011] Preferably, a lower pad is sleeved on the surface of the right end of the eccentric body, and the surface of the lower pad is in contact with the inner wall of the left end of the lower joint.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model passes the oil pumping rod through the device diameter, and the pressure cover and the main body press down the upper pad through the thread to shrink the inner hole of the rubber gasket to seal the oil pumping rod. The main body and the middle connection press the main body lower pad. After the oil pumping rod breaks and falls off the well, the anti-blowout ball in the middle connection will rise to the main body lower pad under the action of pressure and buoyancy, and the seal blocks the oil from spraying out. The upper part of the eccentric body is connected with the middle connection, and the lower sphere is directly fixed to the eccentric body with the lower pressure cap and the lower joint through the spherical groove on the lower pad. Since the eccentric body itself has an eccentric function according to a certain size eccentricity, and the lower part of the eccentric body is designed to be spherical, it can be adjusted to a certain angle to achieve the effect of adjusting deviation and preventing wear. During the deviation adjustment process, it tilts, so that the pressure sensor on the eccentric body contacts the spring, so that the corresponding pressure sensor is subjected to pressure, and the direction of deflection can be judged according to the position of the corresponding pressure sensor. Be careful when performing other operations.

[0014] 2. The utility model replaces the common polished rod sealer, has the function of sealing the polished rod of the common polished rod sealer, and is designed with a blowout prevention ball. After the polished rod breaks and falls off the well, the blowout prevention ball quickly floats up under the action of pressure and buoyancy to block the passage to prevent crude oil from spraying out. The spherical surface on the eccentric body has the function of automatically adjusting the angle, so that the sucker rod can be adjusted to a suitable angle in an oil well with a certain angle to prevent eccentric wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic cross-sectional view of the structure of the utility model;

[0016] Figure 2 It is a partial left-side sectional schematic diagram of the utility model.

[0017] In the figure: 1. pressure cover; 2. upper pad; 3. main body; 4. rubber gasket; 5. middle connection; 6. main body lower pad; 7. anti-blowout ball; 8. pressing thread; 9. lower straightening sleeve; 10. eccentric body; 11. lower pressure cap; 12. lower pad; 13. lower joint; 14. detection mechanism; 141. ring body; 142. spring; 143. pressure sensor. DETAILED DESCRIPTION

[0018] See also Figure 1-Figure 2 , a stainless steel polarizing rod sealing device includes a middle connection 5, the inner wall of the left end of the middle connection 5 is threadedly connected with the main body 3, the inner wall of the left end of the middle connection 5 is placed with a main body lower pad 6, by setting the main body lower pad 6, when the anti-blowout ball 7 floats rapidly under the action of pressure and buoyancy, it contacts with it to form an effective seal, the inner cavity of the middle connection 5 is placed with the anti-blowout ball 7, the inner wall of the right end of the middle connection 5 is threadedly connected with an eccentric body 10, the outer surface of the eccentric body 10 is movably sleeved with a lower pressing cap 11, and the inner wall of the right end of the lower pressing cap 11 is threadedly connected with a lower joint 13, by setting the lower joint 13, the eccentric body 10 passing through the lower pressing cap 11 is positioned and fixed, and the eccentric body 10 will not move arbitrarily on the surface of the eccentric body 10, and the surface of the lower pressing cap 11 and the eccentric body 10 are installed with a detection mechanism 14, and the detection mechanism 14 includes a ring body 141, a spring 142 and a pressure sensor 143.

[0019] See also Figure 1 and Figure 2 The right side of the ring body 141 is fixedly connected to the left side of the lower pressure cap 11 by bolts, there are several springs 142, and one end of each spring is fixedly connected to the inner wall of the ring body 141, there are several pressure sensors 143, and one side of each pressure sensor is fixedly connected to the surface of the eccentric body 10.

[0020] See also Figure 1 A rubber gasket 4 is placed in the inner cavity of the main body 3. By setting the rubber gasket 4, the inner wall of the main body 3 is protected while the upper pad 2 is in close contact with the inner wall of the pressure cover 1 and the inner wall of the main body 3 during installation, and an effective seal is formed. The number of rubber gaskets 4 is several, and multiple rubber gaskets 4 are placed in contact and stacked.

[0021] See also Figure 1 An upper pad 2 is inserted into the inner wall of the left end of the main body 3, and a pressure cover 1 is threadedly sleeved on the surface of the left end of the main body 3. The upper pad 2 is located in the inner cavity of the pressure cover 1, and the surface of the upper pad 2 contacts the inner wall of the pressure cover 1.

[0022] See also Figure 1A lower straightening sleeve 9 is placed in the inner cavity of the eccentric body 10, and a pressing wire 8 is threadedly connected to the inner wall of the left end of the eccentric body 10. By setting the pressing wire 8, the lower straightening sleeve 9 installed in the eccentric body 10 is fixed so that the lower straightening sleeve 9 will not move in the eccentric body 10, and the right end of the pressing wire 8 is in contact with the left end of the lower straightening sleeve 9.

[0023] See also Figure 1 The surface of the right end of the eccentric body 10 is sleeved with a lower pad 12. By setting the lower pad 12, the lower joint 13 and the eccentric body 10 are sealed, and the rotation between the eccentric body 10 and the lower pressure cap 11 is not affected. The surface of the lower pad 12 contacts the inner wall of the left end of the lower joint 13.

[0024] When in use, during normal mining, the oil pumping rod passes through the device diameter, the pressure cap 1 and the main body 3 press down the upper pad 2 through the thread to shrink the inner hole of the rubber gasket 4 to seal the oil pumping rod, and the main body 3 and the middle connection 5 press the main body lower pad 6. After the sucker rod breaks and falls off the well, the anti-blowout ball 7 in the middle connection 5 will rise to the main body lower pad 6 under the action of pressure and buoyancy, and the seal blocks the oil from spraying out. The upper part of the eccentric body 10 is connected to the middle connection 5, and the lower spherical body 10 is directly fixed to the eccentric body 10 with the lower pressure cap 11 and the lower joint 13 through the spherical groove on the lower pad 12. Since the eccentric body 10 itself has an eccentric function according to a certain size eccentricity, and the lower part of the eccentric body 10 is designed to be spherical, it can be adjusted to a certain angle to achieve the effect of adjusting the deviation and preventing wear.

[0025] In summary, the stainless steel polarization-adjustable light rod sealing device, through the pressure cover 1, the upper pad 2, the main body 3, the rubber gasket 4, the middle connection 5, the main body lower pad 6, the anti-blowout ball 7, the pressing thread 8, the lower straightening sleeve 9, the eccentric body 10, the lower pressure cap 11, the lower pad 12 and the lower joint 13, solves the problem that if the light rod is broken during work, the oil will spray out under the pressure in the well, causing pollution and waste of crude oil, and the pumping wells are not very vertical, but have a certain angle, so the ordinary light rod sealer has no adjustment function and will cause eccentric wear.

Claims

1. A stainless steel polarizing rod sealing device, including a middle connection (5), characterized in that: The inner wall of the left end of the middle connection (5) is threadedly connected to the main body (3), the inner wall of the left end of the middle connection (5) is placed with a main body lower pad (6), the inner cavity of the middle connection (5) is placed with an anti-spray ball (7), the inner wall of the right end of the middle connection (5) is threadedly connected to the eccentric body (10), the outer surface of the eccentric body (10) is movably sleeved with a lower pressure cap (11), the inner wall of the right end of the lower pressure cap (11) is threadedly connected to a lower joint (13), and the surfaces of the lower pressure cap (11) and the eccentric body (10) are installed with a detection mechanism (14), and the detection mechanism (14) comprises a ring body (141), a spring (142) and a pressure sensor (143).

2. The stainless steel polarizing rod sealing device according to claim 1, characterized in that: The right side of the ring body (141) is fixedly connected to the left side of the lower pressure cap (11) by bolts, the number of the springs (142) is several, and one end of each spring is fixedly connected to the inner wall of the ring body (141), and the number of the pressure sensors (143) is several, and one side of each pressure sensor is fixedly connected to the surface of the eccentric body (10).

3. The stainless steel polarization rod sealing device according to claim 1, characterized in that: A rubber gasket (4) is placed in the inner cavity of the main body (3), and the number of the rubber gaskets (4) is multiple, and the multiple rubber gaskets (4) are placed in contact with each other and stacked.

4. The stainless steel polarization rod sealing device according to claim 1, characterized in that: An upper pad (2) is inserted into the inner wall of the left end of the main body (3), and a pressure cover (1) is threadedly sleeved on the surface of the left end of the main body (3). The upper pad (2) is located in the inner cavity of the pressure cover (1), and the surface of the upper pad (2) is in contact with the inner wall of the pressure cover (1).

5. The stainless steel polarization rod sealing device according to claim 1, characterized in that: A lower stabilizing sleeve (9) is placed in the inner cavity of the eccentric body (10), and a pressing thread (8) is threadedly connected to the inner wall of the left end of the eccentric body (10), and the right end of the pressing thread (8) is in contact with the left end of the lower stabilizing sleeve (9).

6. The stainless steel polarization rod sealing device according to claim 1, characterized in that: A lower pad (12) is sleeved on the surface of the right end of the eccentric body (10), and the surface of the lower pad (12) contacts the inner wall of the left end of the lower joint (13).

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