Disassembly-free oil nozzle paraffin removal device

Abstract

The utility model discloses a disassembly-free type oil nozzle paraffin removal device which comprises a main shaft and a shaft sleeve arranged in the middle of the outer side of the main shaft in a sleeved mode, a flange plate is arranged behind the shaft sleeve, an annular boss is arranged at the rear end of the shaft sleeve, and a clamping groove for containing the annular boss is formed in the flange plate. The front end of the main shaft is coaxially connected with a clamp, a drill bit is detachably installed through the clamp, and the rear end of the main shaft penetrates out of the flange plate. An internal thread part is arranged in the shaft sleeve, an external thread part matched with the internal thread part is arranged in the middle of the main shaft, the overall length of the external thread part is smaller than that of the internal thread part, and an annular sealing ring is arranged between the shaft sleeve and the main shaft. According to the oil nozzle paraffin removal device, paraffin removal operation can be conducted on an oil nozzle under the condition of not stopping production and not disassembling, the cleaning efficiency is high, more importantly, operators do not need to close a gate to disassemble an oil nozzle sleeve, and the potential safety and environmental protection hazards that the oil nozzle flies out to hurt people or crude oil splashes to the bodies of the operators are avoided.

Description

Technical Field

[0001] The utility model relates to a disassembly-free oil nozzle wax cleaning device. Background Art

[0002] During the production process of an oil well, as temperature and pressure decrease and gases precipitate, paraffin wax dissolved in the crude oil crystallizes and precipitates when certain conditions are met. As conditions continue to change, the paraffin wax continues to precipitate, and its crystals accumulate and settle on the nozzle. The nozzle is a component on the Christmas tree that controls the flow rate of the oil well. Common nozzles are cylindrical and have an outlet hole with a diameter of 2-18mm. Severe nozzle blockage can cause the well to stop production.

[0003] In particular, the smaller the nozzle diameter, the more frequent the oil well nozzle blockage occurs. During winter production, the nozzle of the flowing well often becomes clogged, resulting in a decrease in production. If the nozzle is not cleaned in time, it will seriously affect the flowing production of the oil well.

[0004] A common method for cleaning the oil nozzle on-site is to first close the production gate, then the backpressure gate, and open the vent gate. After ensuring the pressure has dropped to zero, the nozzle is removed from the nozzle sleeve using a nozzle wrench. During this removal process, residual pressure between the production gate and the nozzle sleeve cannot be released, potentially causing the nozzle to fly out and injure personnel, or crude oil to splash onto workers. Furthermore, the high position of the nozzle sleeve makes operation very inconvenient. This operation can also take a long time, leading to wax buildup in the tubing and the generation of contaminants. Summary of the Invention

[0005] The purpose of the utility model is to address the defects of the existing technology and provide a disassembly-free oil nozzle wax cleaning device, which can perform wax cleaning operations on the oil nozzle without stopping production or disassembly. Not only is the cleaning efficiency high, but more importantly, the operator does not need to close the gate to remove the oil nozzle sleeve, avoiding the safety and environmental hazards of the oil nozzle flying out and injuring people or crude oil splashing onto the operator.

[0006] The technical solution of the utility model is: a disassembly-free oil nozzle wax cleaning device, comprising a main shaft and a sleeve sleeved on the middle part of the outer side of the main shaft, a flange is provided at the rear of the sleeve, an annular boss is provided at the rear end of the sleeve, and a groove for accommodating the annular boss is provided on the flange;

[0007] The front end of the main shaft is coaxially connected to a fixture, and a drill bit is detachably mounted on the fixture, and the rear end of the main shaft passes through a flange;

[0008] An internal threaded portion is provided in the shaft sleeve, and an external threaded portion cooperating with the internal threaded portion is provided in the middle of the main shaft. The overall length of the external threaded portion is smaller than the internal threaded portion, and an annular sealing ring is provided between the shaft sleeve and the main shaft.

[0009] Preferably, a threaded opening is coaxially opened at the front end of the shaft sleeve, a hollow threaded cap is threadedly connected to the threaded opening, and the annular sealing ring is fixed in the threaded opening through the threaded cap.

[0010] Preferably, the rear end of the main shaft is detachably connected to a handle after passing through the flange.

[0011] Preferably, a limiting groove is provided at the end of the shaft sleeve, and a limiting step that cooperates with the limiting groove is provided in the groove of the flange.

[0012] Compared with the prior art, the utility model has the following advantages: the utility model can perform wax removal operation on the oil nozzle without stopping production or disassembly, and the operator does not need to close the gate to disassemble the oil nozzle sleeve, thereby avoiding the safety and environmental hazards of the oil nozzle flying out and injuring people or crude oil splashing onto the operator, and can also avoid accidents of poisoning and casualties caused by oil and gas overflow, while reducing the labor intensity of the operator and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the use state of the utility model;

[0014] Figure 2 It is a structural diagram of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the half-section state of the shaft sleeve of the utility model;

[0016] Figure 4 It is a structural diagram of the flange;

[0017] In the figure: 1. Christmas tree, 2. Flange, 3. Handle, 4. Drill bit, 5. Clamp, 6. Screw cap, 7. Bushing, 8. Spindle, 9. Limiting groove, 10. Annular boss, 11. Internal threaded portion, 12. External threaded portion, 13. Annular sealing ring, 14. Limiting step, 15. Slot. DETAILED DESCRIPTION

[0018] The present invention is further described below with reference to the accompanying drawings and embodiments. Example 1

[0019] like Figures 1 to 4 A non-disassembly type oil nozzle wax cleaning device includes a main shaft 8 and a sleeve 7 sleeved on the middle part of the outer side of the main shaft 8, a flange 2 is provided behind the sleeve 7, an annular boss 10 is provided at the rear end of the sleeve 7, and a slot 15 for accommodating the annular boss 10 is provided on the flange 2.

[0020] The front end of the main shaft 8 is coaxially connected to the clamp 5, and the drill bit 4 is detachably mounted through the clamp 5. The rear end of the main shaft 8 passes through the flange 2 and is detachably connected to the handle 3.

[0021] An internal threaded portion 11 is provided in the shaft sleeve 7 , and an external threaded portion 12 matching the internal threaded portion 11 is provided in the middle of the main shaft 8 . The overall length of the external threaded portion 12 is smaller than that of the internal threaded portion 11 .

[0022] The front end of the sleeve 7 is coaxially provided with a threaded opening, on which a hollow threaded cap 6 is threadedly connected, and an annular sealing ring 13 is fixed in the threaded opening through the threaded cap 6, and the annular sealing ring 13 is sleeved on the outer circumference of the main shaft 8.

[0023] Working principle:

[0024] When in use, the flange 2 is fixed on the flange of the Christmas tree 1, and the sleeve 7 is fixed in the pipe of the Christmas tree 1 through the flange 2, as shown in FIG. Figure 1 state.

[0025] When the oil nozzle inside the Christmas tree 1 needs to be cleaned, the handle 3 is rotated to drive the main shaft 8 to rotate. Under the threaded cooperation between the main shaft 8 and the sleeve 7, the main shaft 8 drives the drill bit 4 to move toward the oil nozzle, and the blockage in the oil nozzle is poked open by the drill bit 4. Then, the handle 3 is rotated in the opposite direction to reset the drill bit 4.

[0026] The utility model can perform wax removal operation on the oil nozzle without stopping production or disassembly. The operator does not need to close the gate to disassemble the oil nozzle sleeve, thereby avoiding safety and environmental hazards such as the oil nozzle flying out and injuring people or crude oil splashing onto the operator. It can also avoid accidents of poisoning and casualties caused by oil and gas overflow, and at the same time reduce the labor intensity of the operator and improve work efficiency. Example 2

[0027] This embodiment is further optimized based on the above embodiment, specifically:

[0028] like Figures 2 to 4 A limiting groove 9 is provided at the end of the shaft sleeve 7, and a limiting step 14 that cooperates with the limiting groove 9 is provided in the slot 15 of the flange 2.

[0029] By adding the limiting step 14 and the limiting groove 9, the sleeve 7 can be limited to avoid the failure of the main shaft 8 not moving forward due to the rotation of the sleeve 7 when the rotating handle 3 drives the main shaft 8 to rotate, making it more stable and reliable to use.

[0030] The present invention is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention. The changed contents still fall within the scope of protection of the present invention.

Claims

1. A disassembly-free nozzle wax cleaning device, characterized by: It includes a main shaft and a sleeve sleeved on the middle part of the outer side of the main shaft, a flange is provided at the rear of the sleeve, an annular boss is provided at the rear end of the sleeve, and a groove for accommodating the annular boss is provided on the flange; The front end of the main shaft is coaxially connected to a fixture, and a drill bit is detachably mounted on the fixture, and the rear end of the main shaft passes through a flange; An internal threaded portion is provided in the shaft sleeve, and an external threaded portion cooperating with the internal threaded portion is provided in the middle of the main shaft. The overall length of the external threaded portion is smaller than the internal threaded portion, and an annular sealing ring is provided between the shaft sleeve and the main shaft.

2. The disassembly-free nozzle wax cleaning device according to claim 1, characterized in that: A threaded opening is coaxially formed at the front end of the shaft sleeve. A hollow threaded cap is threadedly connected to the threaded opening, and the annular sealing ring is fixed in the threaded opening through the threaded cap.

3. The disassembly-free nozzle wax cleaning device according to claim 1, characterized in that: The rear end of the main shaft is detachably connected with a handle after passing through the flange.

4. The non-disassembly type oil nozzle wax cleaning device according to claim 1, characterized in that: A limiting groove is provided at the end of the shaft sleeve, and a limiting step that matches the limiting groove is provided in the clamping groove of the flange.

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