Four-direction filling packing box
Through the design of the four-direction filling pack box, the square pack and screw cap rotates, the wear problem caused by the difference in the axis of the pub and the pub box is solved, and the uniform sealing and rapid replacement of the pub box is achieved, preventing oil leakage from the wellhead, and sealing and centering adjustment functions are provided.
Patent Information
- Application Number
- CN202422908978.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-11-28
AI Technical Summary
When the central axis of the bar and the central axis of the pack box are different in the existing pack box, it cannot be centered after installation, resulting in serious wear, which can easily cause oil leakage at the wellhead and environmental pollution, and cumbersome adjustment.
A four-direction filling pack box is designed, and four square packs are used to hold the bar tightly in the central tube. The screw cap is rotated to provide compression force, so that the square pack is subjected to uniform force. Combined with the adjustment of the spherical cylinder and the half-piece joint, the center sealing and spray-proof function of the bar is realized.
It realizes uniform stress sealing of the bar, prevents wear, quickly replaces the pack, keeps the bar in the center, and prevents oil leakage from the wellhead. It has sealed bar, anti-blasting and centering adjustment functions.
Smart Images
Figure CN223256794U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of packing boxes, in particular to a packing box filled in four directions. Background Art
[0002] During the oil production process of rod-type oil extraction equipment, the polished rod of the rod-type oil extraction equipment drives the sucker rod in an up-and-down reciprocating motion to achieve oil production. To prevent oil leakage from the wellhead during oil production and cause environmental pollution, a packing box is usually installed at the wellhead as a sealing device to achieve sealing. In related technologies, the packing box is installed on the wellhead pipeline and contains packing, which is a kind of sealing filler. During oil production, the packing intercepts the flow and achieves sealing.
[0003] Currently, when the center axis of the polished rod in the packing box is not concentric with the center axis of the packing box, it cannot be centered after installation, which will cause a lot of wear and tear, and the adjustment is very cumbersome, which can easily cause wellhead oil leakage and environmental pollution. Therefore, this application proposes a four-directional filling packing box to solve this problem.
[0004] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content
[0005] The purpose of the utility model is to provide a four-directional filling packing box to solve the problems raised in the above background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides a four-directional filling packing box, including a half-piece joint, a spherical cylinder is sleeved on the top of the half-piece joint, a compression screw ring is threaded on the top of the half-piece joint, a blowout preventer packing is sleeved on the inside of the spherical cylinder, a blowout preventer is sleeved on the top of the spherical cylinder, the top of the blowout preventer is fixedly connected to a center tube, a polished rod passes through the inside of the center tube, a pressure cover is sleeved on the top of the center tube, a copper ring is provided at the bottom end of the pressure cover, the copper ring is sleeved with the polished rod, a rubber cylinder is fixedly installed at both ends of the center tube, a square packing is sleeved on the inside of the rubber cylinder, a push block is extruded on one side of the square packing, a screw is fixedly connected to the back of the push block, and a screw cap is sleeved on one end of the rubber cylinder.
[0007] Preferably, a sealing ring is sleeved on the lower side of one side of the spherical cylinder, and the sealing ring is extrusion-connected to the half-piece joint; a pressure ring is sleeved on the upper side of one side of the spherical cylinder, and the pressure ring is extrusion-connected to the tightening screw ring.
[0008] Preferably, the blowout preventer packing is extrusion-connected to the polished rod, a sealing cover is sleeved on one side of the lubricator, and the sealing cover is sealingly sleeved to the spherical cylinder.
[0009] Preferably, the copper ring is sleeved with the central tube, and the square packing is extruded and connected to the polished rod.
[0010] Preferably, the push block is movably connected to the plastic barrel, the screw is sleeved with the plastic barrel, and the screw cap is sleeved with the screw.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] The utility model relates to a four-directional filling packing box, which is used in a rod pump oil production system and adopts packing in four directions to seal the polished rod. The polished rod is held tightly by four square packings in the center tube. The holding force is provided by the pressing push block after the screw rotates in the screw cap, so that the square packing is evenly stressed. The rubber cylinder is rotated in the forward direction to drive the center tube to rotate and press the blowout prevention packing downward to seal the polished rod and seal the liquid in the well. After the square packing is continuously worn, the rubber cylinder is rotated in the reverse direction, the center tube is lifted upward, the pressure on the blowout prevention packing is released, and the blowout prevention function is released. The screw is rotated in the reverse direction, the push block is pulled out, and another piece of square packing can be filled in conveniently and quickly. The plane position of the spherical cylinder on the half-piece joint and the full circumferential angle of the spherical cylinder can be adjusted to keep the packing box as a whole in the center of the polished rod, thereby preventing the polished rod from causing eccentric wear on the square packing. The utility model has the functions of sealing the polished rod, preventing blowout and centering adjustment. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0014] Figure 1 This is a structural diagram of a four-directional filling packing box according to an embodiment of the utility model;
[0015] Figure 2 The figure is a schematic top view of the structure of a four-directional filling packing box according to an embodiment of the utility model.
[0016] In the figure: 1. Half-piece joint; 2. Sealing ring; 3. Spherical cylinder; 4. Compression ring; 5. Compression screw; 6. Sealing cover; 7. Blowout preventer; 8. Center pipe; 9. Gland; 10. Copper ring; 11. Rubber cylinder; 12. Push block; 13. Screw; 14. Screw cap; 15. Sealing gasket; 16. Blowout preventer packing; 17. Square packing; 18. Polished rod. DETAILED DESCRIPTION
[0017] Below, the utility model is further described with reference to the accompanying drawings and specific embodiments:
[0018] See also Figure 1-2According to an embodiment of the present invention, a four-way filling packing box includes a half-piece joint. The top of the half-piece joint 1 is sleeved with a spherical tube 3. The top of the half-piece joint 1 is threadedly connected to a compression screw ring 5. The inside of the spherical tube 3 is sleeved with a blowout preventer 16. The top of the spherical tube 3 is sleeved with a blowout preventer 7. The top of the blowout preventer 7 is fixedly connected to a center pipe 8. A polished rod 18 passes through the interior of the center pipe 8. The top of the center pipe 8 is sleeved with a gland 9. The bottom end of the gland 9 is provided with a copper ring 10. The copper ring 10 is sleeved with the polished rod 18. A rubber cylinder 11 is fixedly installed at both ends of the central tube 8. A square packing 17 is sleeved inside the rubber cylinder 11. A push block 12 is extruded on one side of the square packing 17. A screw 13 is fixedly connected to the back of the push block 12. A screw cap 14 is sleeved on one end of the rubber cylinder 11. The utility model adjusts the force of the four screws 13 to make the square packing 17 evenly stressed. When the square packing 17 is constantly worn, the screw 13 is rotated in the opposite direction, the push block 12 is pulled out, and another piece of square packing 17 can be filled, which is convenient and quick to replace.
[0019] According to the above scheme of the present utility model, a sealing ring 2 is sleeved on the lower side of the spherical cylinder 3, and the sealing ring 2 is extruded and connected to the half-piece joint 1. A pressure ring 4 is sleeved on the upper side of the spherical cylinder 3, and the pressure ring 4 is extruded and connected to the compression screw ring 5. The blowout preventer packing 16 is extruded and connected to the polished rod 18. A sealing cover 6 is sleeved on one side of the blowout preventer 7, and the sealing cover 6 is sealed and sleeved with the spherical cylinder 3. The copper ring 10 is sleeved with the center tube 8, the square packing 17 is extruded and connected to the polished rod 18, the push block 12 is movably connected to the rubber tube 11, the screw 13 is sleeved with the rubber tube 11, and the screw cap 14 is sleeved with the screw 13.
[0020] During specific use, first shut down the pumping system to stop the polished rod. Then, rotate the rubber cylinder 11 forward to drive the center pipe 8 to rotate forward, press the blowout preventer packing 16 downward, and the system enters the blowout preventer state. Then, rotate the screw 13 reversely to loosen the push block 12 and retract the push block 12 into the screw cap 14. Add the square packing 17 from the side opening of the rubber cylinder 11. Rotate the screw 13 forward to press the push block 12 and make the pressing force in four directions consistent. Finally, rotate the rubber cylinder 11 reversely to drive the center pipe 8 to rotate reversely to release the pressure on the blowout preventer packing 16. The system is released from the blowout preventer state, realizing the functions of sealing the polished rod, blowout prevention, and centering adjustment.
[0021] In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle", "inside", "top", "bottom end", etc., indicating positions or positional relationships, are based on the positions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified or limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense, for example, they can mean fixed connection, detachable connection, or integral connection; they can mean mechanical connection or electrical connection; they can mean direct connection, indirect connection through an intermediate medium, or internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0022] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features with equivalents. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.
Claims
1. A four-way filling packing box, characterized in that: The invention comprises a half-piece joint, wherein the top of the half-piece joint (1) is sleeved with a spherical cylinder (3), the top of the half-piece joint (1) is threadedly connected with a compression screw ring (5), the interior of the spherical cylinder (3) is sleeved with a blowout prevention packing (16), the top of the spherical cylinder (3) is sleeved with a blowout prevention pipe (7), the top of the blowout prevention pipe (7) is fixedly connected with a center pipe (8), the interior of the center pipe (8) is penetrated by a polished rod (18), and the top of the center pipe (8) is sleeved with a pressure cap. (9), a copper ring (10) is provided at the bottom end of the pressure cover (9), and the copper ring (10) is sleeved with the polished rod (18). A rubber tube (11) is fixedly installed at both ends of the central tube (8), and a square packing (17) is sleeved inside the rubber tube (11). A push block (12) is extruded on one side of the square packing (17), and a screw (13) is fixedly connected to the back of the push block (12). A screw cap (14) is sleeved on one end of the rubber tube (11).
2. A four-way filling packing box according to claim 1, characterized in that: A sealing ring (2) is sleeved on the lower side of one side of the spherical cylinder (3), and the sealing ring (2) is extruded and connected to the half-piece joint (1). A pressing ring (4) is sleeved on the upper side of one side of the spherical cylinder (3), and the pressing ring (4) is extruded and connected to the compression screw ring (5).
3. A four-way filling packing box according to claim 2, characterized in that: The anti-blowout packing (16) is extruded and connected to the polished rod (18); a sealing cover (6) is sleeved on one side of the anti-blowout pipe (7); and the sealing cover (6) is sealed and sleeved on the spherical cylinder (3).
4. A four-way filling packing box according to claim 3, characterized in that: The copper ring (10) is sleeved with the central tube (8), and the square packing (17) is extruded and connected with the polished rod (18).
5. The four-way filling packing box according to claim 4, characterized in that: The push block (12) is movably connected to the plastic barrel (11), the screw (13) is sleeved with the plastic barrel (11), and the screw cap (14) is sleeved with the screw (13).