Anti-leakage petroleum wellhead device

Abstract

The utility model relates to the technical field of oil extraction equipment, in particular to an anti-leakage petroleum wellhead device. Comprising a wellhead device body and a fixing ring. A fixing ring is fixedly arranged on the upper end face of the wellhead device body, and movable holes movably connected with a polish rod are fixedly formed in the wellhead device body and the fixing ring; the sealing device is characterized in that a sealing seat is arranged on the fixing ring, and a sealing assembly and an auxiliary assembly are arranged on the sealing seat; the sealing assembly and the auxiliary assembly are arranged on the connecting end fixing ring of the wellhead device body, a sealing seat needing to be replaced only needs to be installed and fixed through a fixing pin, replacement is convenient, a polish rod can be effectively sealed through the first packing and the second packing in the installation seat, oil leakage is prevented, and the service life of the polish rod is prolonged. And actual use requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil extraction equipment technical field, concretely is a kind of anti-seepage petroleum wellhead device. BACKGROUND

[0002] The Chinese patent document with the prior publication CN210195700U discloses an anti-seepage petroleum wellhead device, which proposes that a funnel is fixedly connected below the inner wall of a rough pipe, a sliding block is fixedly connected to the top of a second support, and a sector plate is slidingly connected to the outer wall of the sliding block through a sliding groove. The petroleum wellhead device prevents petroleum from directly dripping onto the ground and prevents foreign matter from falling into the interior of the rough pipe. It solves the problem of parts falling from some equipment in the prior art due to the large number of mining devices, which can fall into the petroleum well or be stuck near the petroleum pipeline. During the mining process, the leaked crude oil is collected by the funnel when the petroleum pipeline is removed from the petroleum well, so the crude oil does not drip onto the ground, solving the problem of environmental pollution caused by the deep penetration of crude oil into the ground. Therefore, the anti-seepage petroleum wellhead device can fully meet the needs of users.

[0003] In the above-mentioned scheme and the prior art, a sealing ring is usually arranged at the position of the wellhead of the oil extraction well to achieve sealing. Currently, a sealing ring with internal threads is commonly used to achieve sealing, i.e., the sealing ring is nested on the polished rod at the wellhead. When the oil pumping unit is operating, the polished rod repeatedly moves up and down, and the sealing ring can achieve the sealing effect. However, the sealing ring connected by threads is inconvenient to replace, which reduces the well shutdown time during replacement, thereby reducing the oil extraction efficiency of the oil extraction equipment and the oil well production, and cannot meet the actual use requirements. SUMMARY

[0004] The utility model aims at providing an anti-seepage petroleum wellhead device to solve the problems in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an anti-seepage petroleum wellhead device, comprising a wellhead device body and a fixing ring; a fixing ring is fixedly arranged on the upper end surface of the wellhead device body, and movable holes for movably connecting with a polished rod are fixedly arranged on the wellhead device body and the fixing ring;

[0006] A sealing seat is arranged on the fixing ring, and a sealing assembly and an auxiliary assembly are arranged on the sealing seat.

[0007] Preferably, the sealing assembly comprises a connecting ring and a sealing gasket; the connecting ring is arranged on the lower end surface of the sealing seat and movably inserted into the movable hole of the fixing ring, and the inner side surface of the sealing seat and the connecting ring is provided with a sealing gasket.

[0008] Preferably, the inner side of the sealing gasket is provided with a first packing, and the upper side of the first packing is provided with a pressing block, and the upper side of the pressing block is provided with a second packing.

[0009] Preferably, the lower end surface of the sealing seat is fixedly provided with a sealing ring block, and the lower side of the sealing ring block is connected with a sealing ring in a matched mode, and the sealing ring block and the sealing ring are movably connected in a sealing ring groove on the fixed ring.

[0010] Preferably, the auxiliary assembly comprises a limiting groove and a limiting block, and the limiting groove is equidistantly fixedly arranged on the upper end surface of the fixed ring, and the limiting block is arranged in the limiting groove in a matched mode, and the limiting block is connected with the sealing seat.

[0011] Preferably, the sealing seat is equidistantly fixedly provided with a fixed hole, and the lower side of the fixed ring of the sealing seat is provided with a fixed groove corresponding to the fixed hole.

[0012] Preferably, the sealing seat is provided with a connecting plate, and the other end of the connecting plate is connected through a rotating shaft, and the connecting plate is connected with the fixed hole and the fixed groove of the sealing seat through a fixed pin.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The anti-seepage petroleum well head device provided by the utility model is provided with a sealing assembly and an auxiliary assembly on the connecting end fixed ring of the well head device body, the sealing seat which needs to be replaced can be fixed only through a fixed pin, and the replacement is convenient, the first packing and the second packing in the mounting seat can effectively seal the polished rod, the oil leakage is prevented, and the actual use requirement is met. ACCURACY OF DRAWINGS

[0015] Figure 1 It is a well head device body structure schematic view of the utility model;

[0016] Figure 2 It is a well head device body internal structure schematic view of the utility model;

[0017] Figure 3 It is a sealing seat left side structure schematic view of the utility model; Figure 2

[0018] Figure 4 It is a sealing seat right side structure schematic view of the utility model.

[0019] Figure 5 It is a sealing seat right side structure schematic view of the utility model.

[0020] ​In the diagram: 1. Wellhead device body, 2. Fixing ring, 3. Sealing seat, 4. Connecting ring, 5. Sealing gasket, 6. First packing, 7. Pressing block, 8. Second packing, 9. Sealing ring groove, 10. Sealing ring, 11. Limiting groove, 12. Limiting block, 13. Fixing hole, 14. Fixing groove, 15. Connecting plate, 16. Rotating shaft, 17. Fixing pin. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please see Figures 1 to 5 This utility model provides three technical solutions:

[0023] Example 1: A leak-proof oil wellhead device includes a wellhead device body 1 and a fixing ring 2; the fixing ring 2 is fixedly provided on the upper end face of the wellhead device body 1, and both the wellhead device body 1 and the fixing ring 2 are fixedly provided with movable holes that are movably connected to the polished rod, and the movable holes are used to place the polished rod.

[0024] A sealing seat 3 is provided on the fixed ring 2. The sealing seat 3 is used to seal and prevent oil leakage. The sealing seat 3 is provided with sealing components and auxiliary components.

[0025] Example 2: Based on Example 1, the sealing assembly includes a connecting ring 4 and a sealing gasket 5; the connecting ring 4 is disposed on the lower end face of the sealing seat 3, and the connecting ring 4 is movably inserted into the movable hole of the fixed ring 2, and the sealing seat 3 and the inner surface of the connecting ring 4 are provided with sealing gaskets 5.

[0026] A first packing 6 is provided on the inner side of the sealing gasket 5, and a clamping block 7 is provided above the first packing 6, and a second packing 8 is provided above the clamping block 7.

[0027] A sealing ring block 10 is fixedly provided on the lower end face of the sealing seat 3, and a sealing ring 11 is adapted to be connected to the lower part of the sealing ring block 10. The sealing ring block 10 and the sealing ring 11 are movably connected in the sealing ring groove 9 on the fixed ring 2.

[0028] The auxiliary assembly comprises a limiting groove 12 and a limiting block 13; the limiting groove 12 is fixed equidistantly on the upper end surface of the fixed ring 2, and the limiting block 13 is connected to the limiting groove 12 in a matched manner, and the limiting block 13 is connected to the sealing seat 3.

[0029] A fixed hole 14 is fixed equidistantly on the sealing seat 3, and the fixed ring 2 below the sealing seat 3 is provided with a fixed groove 15 corresponding to the fixed hole 14; the sealing seat 3 is provided with a connecting plate 16, and the other end of the connecting plate 16 is connected through a rotating shaft 17, and the connecting plate 16 is connected to the fixed groove 15 through the fixed hole 14 of the sealing seat 3 by a fixed pin 18.

[0030] In use, when the sealing seat 3 is installed, the sealing ring block 10 at the bottom of the sealing seat 3 is installed in the sealing ring groove 9 on the fixed ring 2, and the sealing ring 11 at the bottom of the sealing ring block 10 is used to seal the sealing ring block 10 to prevent oil leakage, and the limiting block 13 at the bottom of the sealing seat 3 is connected to the limiting groove 12 on the fixed ring 2, and the connecting plate 16 is rotated to be connected to the fixed hole 14 on the sealing seat 3, and then the fixed pin 18 is installed to fix the sealing seat 3, and the first packing and the second packing in the sealing seat 3 can effectively seal the polished rod to prevent oil leakage.

[0031] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A leak-proof oil wellhead device, comprising a wellhead device body (1) and a fixing ring (2); the upper end surface of the wellhead device body (1) is fixedly provided with the fixing ring (2), and the wellhead device body (1) and the fixing ring (2) are both fixedly provided with a movable hole movably connected with a polished rod; characterized in that The fixing ring (2) is provided with a sealing seat (3), and the sealing seat (3) is provided with a sealing assembly and an auxiliary assembly; The lower end surface of the sealing seat (3) is fixedly provided with a sealing ring block (10), and the lower part of the sealing ring block (10) is connected with a sealing ring (11) in a matched manner, and the sealing ring block (10) and the sealing ring (11) are movably connected in a sealing ring groove (9) on the fixing ring (2).

2. A leak-proof oil wellhead apparatus according to claim 1, characterized in that: The sealing assembly comprises a connecting ring (4) and a sealing gasket (5); the connecting ring (4) is arranged on the lower end surface of the sealing seat (3), and the connecting ring (4) is movably inserted into the movable hole of the fixing ring (2), and the inner side of the sealing seat (3) and the connecting ring (4) is provided with a sealing gasket (5).

3. A leak-tight petroleum wellhead apparatus according to claim 2, characterized in that: The inner side of the sealing gasket (5) is provided with a first packing (6), the upper part of the first packing (6) is provided with a pressing block (7), and the upper part of the pressing block (7) is provided with a second packing (8).

4. A leak-proof oil wellhead apparatus according to claim 1, characterized in that: The auxiliary assembly comprises a limiting groove (12) and a limiting block (13); the limiting groove (12) is fixedly arranged on the upper end surface of the fixing ring (2) at equal intervals, and the limiting block (13) is arranged in the limiting groove (12) in a matched manner, and the limiting block (13) is connected with the sealing seat (3).

5. A leakproof wellhead assembly according to claim 4, wherein: The sealing seat (3) is fixedly provided with a fixing hole (14) at equal intervals, and the lower part of the fixing ring (2) is provided with a fixing groove (15) corresponding to the fixing hole (14).

6. A leakproof wellhead assembly according to claim 5, wherein: The sealing seat (3) is provided with a connecting plate (16), and the other end of the connecting plate (16) is connected through a rotating shaft (17), and the connecting plate (16) is connected with the fixing groove (15) through the fixing hole (14) of the sealing seat (3) by a fixing pin (18).

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