Quick release petroleum exploitation from the connection nut

Abstract

The utility model discloses a quick detachable oil exploitation is connected by nut, belongs to oil exploitation equipment technical field, including fixed ring, flat joint pipe, connecting pipe, connecting rod, fixed block and screw nail, and connecting rod is fixed in the fixed ring outer wall, and fixed block is fixed in the connecting pipe outer wall, and fixed block is provided with the limiting slot for the connecting rod and passes, and screw nail passes limiting slot and is connected with connecting rod to prevent connecting pipe rotation and looseness, and quick detachable oil exploitation is connected by nut still includes the shunt mechanism, and the shunt mechanism includes the shunt pipe and the guide pipe, and the rotating shaft with the isolating plate is rotatably arranged in the guide pipe, and the rotating shaft outer wall is equipped with fixed slot. The utility model discloses through the mechanical lock dead device of adding, solved the problem that the connection is easy to loosen under the vibration, improved the connection reliability, through the shunt mechanism with locking function of integration, solved the problem that the main pipeline needs to be closed down in the maintenance branch.

Description

Technical Field

[0001] This utility model relates to the field of oil extraction equipment technology, and in particular to a quick-release oil extraction nut using a union connection. Background Technology

[0002] In oil extraction and transportation systems, pipelines are key infrastructure for transporting high-pressure fluids. The connection between pipelines or between pipelines and equipment requires the use of various connectors to ensure the integrity and sealing of the system. Union nuts, as a type of quick-connect fitting, have been widely used in oil extraction sites. Union nuts mainly rely on the tightening of the threads to generate a huge axial force to press the seal, thereby achieving a sealed connection of the pipe ends.

[0003] Pumps, compressors, and other power equipment at oil extraction sites generate continuous and intense mechanical vibrations. These vibrations are transmitted along the pipeline system and act on the union nuts. Existing union nuts rely solely on the friction of the threaded pair to prevent loosening. Under prolonged vibration and impact, the preload of the threaded pair decreases, causing the nut to rotate and loosen. This leads to a drop in sealing pressure, resulting in media leakage. In severe cases, it can even cause pipeline disconnection, resulting in major safety accidents and environmental pollution.

[0004] When the branch line or the connected equipment needs maintenance or replacement, the fluid flowing to the branch line must be cut off. The existing technology achieves this by independently installing a shut-off valve on the line. This method not only increases additional costs and installation procedures, but more importantly, any operation on the branch line must shut down the upstream main pipeline, causing the entire production process to be interrupted, which seriously affects the continuity of production and operational efficiency.

[0005] Therefore, this utility model proposes a quick-release oil tap using a union connecting nut to overcome the shortcomings of the prior art. Summary of the Invention

[0006] In view of the problems of low connection reliability and easy loosening and falling off of quick-release oil taps using union nuts under vibration conditions, as well as the need to shut down the main pipeline and affect work efficiency when maintaining the diversion pipeline, the present invention aims to provide a quick-release oil tap using union nuts with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a quick-release oil tap with a union connection nut, including: a retaining ring, a flat pipe, a sealing ring, and a connecting pipe; it also includes a connecting rod, a fixing block, screws, washers, and a diversion mechanism.

[0008] The fixing block has a limiting groove for the connecting rod to pass through; the diversion mechanism includes a diversion pipe and a conduit that are interconnected, a rotating shaft is rotatably installed inside the conduit, an isolation plate is fixed on the rotating shaft, a fixing groove is provided on the outer wall of the rotating shaft, and it also includes a fixing rod and a support rod.

[0009] Furthermore, the connecting rod is disposed on the outer wall of the fixing ring, the fixing block is disposed on the outer wall of the connecting pipe, the screw is used to pass through the limiting groove and be screwed into and fixed to the connecting rod; the fixing rod is used to insert into the fixing groove to lock the rotating shaft, and the support rod is fixed to the outer wall of the conduit to support the fixing rod.

[0010] Preferably, the sealing ring is fixedly connected to the right side of the outer wall of the flat pipe, and the left side of the outer wall of the connecting pipe is connected to the right side of the outer wall of the sealing ring.

[0011] Preferably, the connecting rod is fixedly connected to the outer wall of the fixing ring, and the fixing block is fixedly connected to the outer wall of the connecting tube.

[0012] Preferably, the outer wall of the conduit of the diversion mechanism is fixedly connected to the outer wall of the diversion tube.

[0013] Preferably, the baffle plate rotates within the conduit by the rotation of the rotating shaft to selectively abut against the inlet of the diversion tube.

[0014] Preferably, the screw is pressed onto the fixing block by the washer.

[0015] Preferably, the isolation plate is fixedly connected to the rotating shaft.

[0016] Preferably, the direction of the limiting groove is parallel to the axis of the connecting rod.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the safety hazard problem in the prior art where the joint connection relies solely on the friction of the threads for fastening, which can lead to loosening under vibration conditions, resulting in sealing failure or even disconnection. This is achieved by adding a mechanical locking device consisting of a connecting rod, a fixing block, and screws to the outside of the threaded connecting pipe and the fixing ring. The result is a firm connection, vibration and disconnection prevention, and a significant improvement in connection reliability and safety.

[0018] 2. This utility model solves the problem in the prior art that when maintaining or repairing a branch, the entire main pipeline must be shut down, thereby interrupting production and reducing operational efficiency, by integrating a diversion mechanism with a rotatable isolation plate and locking rod inside the connecting nut. It enables independent and safe online shut-off and maintenance of a single branch without affecting the operation of the main pipeline, significantly shortening downtime and improving operation and maintenance efficiency. Attached Figure Description

[0019] Figure 1 The front perspective view of the quick-release oil tap with a union connecting nut proposed in this utility model; Figure 2 This utility model presents a partial structural diagram of the retaining ring of the quick-release oil tap with a nut connected by a union. Figure 3 This is a partial structural diagram of the connecting rod of the quick-release oil tap with a union connecting nut proposed in this utility model; Figure 4 This diagram shows a partial structure of the quick-release oil tap with a union-connected nut, as proposed in this utility model.

[0020] Legend: 1. Fixing ring; 2. Diverting mechanism; 201. Diverting pipe; 202. Conduit; 203. Rotating shaft; 204. Isolation plate; 205. Support rod; 206. Fixing groove; 207. Fixing rod; 3. Mounting groove; 4. Flat pipe; 5. Connecting pipe; 6. Sealing ring; 7. Fixing block; 8. Connecting rod; 9. Limiting groove; 10. Screw; 11. Gasket. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] Example: Please refer to Figures 1 to 4 This utility model embodiment provides a quick-release oil tap using a union connecting nut, including a fixing ring 1 as the connecting body. The inner wall of the fixing ring 1 has an installation groove 3 for installing pipelines. A flat pipe 4 is inserted into the installation groove 3. A sealing ring 6 is fixedly connected to the right side of the outer wall of the flat pipe 4 to achieve sealing when the pipelines are connected. A connecting pipe 5 is detachably installed on the front side of the fixing ring 1 by means of a threaded connection. When the connecting pipe 5 is tightened, the left side of the outer wall of the connecting pipe 5 abuts against the right side of the outer wall of the sealing ring 6, and a reliable sealing structure is formed by axially compressing the sealing ring 6.

[0023] To further enhance the stability and vibration resistance of the connection, a connecting rod 8 is fixedly connected to the outer wall of the fixing ring 1, and a fixing block 7 is fixedly connected to the outer wall of the connecting pipe 5. The inner wall of the fixing block 7 has a limiting groove 9 for the connecting rod 8 to pass through. The direction of the limiting groove 9 is parallel to the axis of the connecting rod 8. When the connecting pipe 5 and the fixing ring 1 are threaded together, the connecting rod 8 aligns with the limiting groove 9 on the fixing block 7 and passes through it. At this time, the connecting assembly is locked by screws 10 and washers 11. The screws 10 pass through the washers 11 and the limiting groove 9 in sequence and are screwed into the connecting rod 8, thereby locking the fixing block 7 and the connecting rod 8 in the radial direction. This achieves mechanical locking of the connecting pipe 5 and the fixing ring 1, effectively preventing the connecting pipe 5 from rotating and loosening under vibration and other working conditions.

[0024] Please refer to Figure 2 and Figure 4 The diversion mechanism 2 includes a diversion pipe 201 and a conduit 202 as fluid channels. The outer walls of the diversion pipe 201 and the conduit 202 are fixedly connected to form a whole, thus forming a connected flow channel. Fluids such as oil can enter through the conduit 202 and flow out from the diversion pipe 201. A rotating shaft 203 is rotatably connected to the inner wall of the conduit 202. An isolation plate 204 for blocking fluid is fixedly connected to the rotating shaft 203. When it is necessary to repair the diversion pipe 201 and the downstream pipeline, the operator can rotate the rotating shaft 203, which drives the isolation plate 204 to rotate inside the conduit 202 until the isolation plate 204 completely abuts the inlet of the diversion pipe 201, thereby cutting off the fluid passage to the diversion pipe 201 and realizing the independent cut-off of the branch.

[0025] To ensure absolute reliability of the shut-off state and prevent the isolation plate 204 from rotating and resetting due to fluid impact or accidental contact, a special locking device is designed. A fixing groove 206 is provided on the outer wall of the rotating shaft 203, and a support rod 205 is fixedly connected to the outer wall of the conduit 202. When the rotating shaft 203 rotates to the shut-off position, the fixing rod 207 is inserted into the fixing groove 206. With the support of the support rod 205, the fixing rod 207 can firmly lock the rotating shaft 203 in the current position. By rotating the isolation plate 204 and using the rod locking structure, the safety and continuity of work during maintenance are ensured.

[0026] As a preferred embodiment, to ensure precise alignment and reliability of the seal, please refer to... Figure 1 The sealing ring 6 is installed on the right side of the outer wall of the flat pipe 4 by a fixed connection. When the connecting pipe 5 is screwed into the fixing ring 1, the left side of the outer wall of the connecting pipe 5 will precisely contact the right side of the outer wall of the sealing ring 6 and generate axial extrusion force, ensuring the uniform application of sealing force during each installation.

[0027] As another preferred embodiment, to enhance the stability and load-bearing capacity of the locking structure, please refer to... Figure 1 and Figure 3 The connecting rod 8 is firmly set on the outer wall of the fixing ring 1 by a fixed connection. At the same time, the fixing block 7 is also firmly set on the outer wall of the connecting pipe 5 by a fixed connection, so that the locking force can be directly applied to the main body of the connection, thereby improving the rigidity of the overall structure.

[0028] As another preferred implementation, to achieve a compact diversion channel, please refer to... Figure 4 The outer wall of the conduit 202 in the diversion mechanism 2 is fixedly connected to the outer wall of the diversion pipe 201, so that the two pipeline components form a T-shaped or Y-shaped integrated structure, which simplifies the number of components and optimizes the fluid path.

[0029] For a specific method of motion implementation, please refer to Figure 2 and Figure 4 The isolation plate 204 controls the opening and closing of the flow channel by rotating. Specifically, the isolation plate 204 rotates in the internal space of the conduit 202 by rotating the rotating shaft 203, thereby selectively abutting or moving away from the inlet of the diverter 201 inside the conduit 202 to achieve the function of shutting off or opening.

[0030] For further optimization of the locking force transmission, please refer to... Figure 3 When the screw 10 is tightened, it is pressed against the surface of the fixing block 7 by the washer 11. The use of the washer 11 increases the contact area, disperses the stress, effectively protects the surface of the fixing block 7, and makes the tightening force transmission more stable and reliable.

[0031] As a specific connection constraint, please refer to Figure 2 and Figure 4 The isolation plate 204 is securely installed on the rotating shaft 203 by a fixed connection, ensuring that the rotational torque of the rotating shaft 203 can be transmitted to the isolation plate 204 without loss.

[0032] For further specifications regarding fit accuracy, please refer to... Figure 3 In order to ensure that the connecting rod 8 can be smoothly and without deviation into the fixing block 7, the direction of the limiting groove 9 is designed to be strictly parallel to the axis of the connecting rod 8, so as to ensure that the locking device can be easily aligned in the final stage of tightening the connecting pipe 5.

[0033] Working principle: During pipe connection installation, firstly, align and insert the flat pipe 4 with the sealing ring 6 into the mounting groove 3 of the fixing ring 1. Then, screw the connecting pipe 5 into the fixing ring 1 through the thread. During the tightening process, the end face of the connecting pipe 5 will continuously apply axial pressure to the sealing ring 6 until the sealing ring 6 is pressed tightly, thereby forming a reliable fluid seal between the flat pipe 4 and the connecting pipe 5. When the connecting pipe 5 is fully tightened, the fixing block 7 on the outer wall also reaches the predetermined position, so that the limiting groove 9 on the fixing block 7 is aligned with the connecting rod 8 on the outer wall of the fixing ring 1. At this time, the screw 10 is passed through the gasket 11 and the limiting groove 9 and screwed into the connecting rod 8. The tightening of the screw 10 will generate a strong radial locking force on the connecting rod 8 and the fixing block 7, thereby completely preventing any accidental rotation or loosening of the connecting pipe 5 relative to the fixing ring 1, solving the technical problem of unstable connection of traditional unions under strong vibration environment. When maintenance is required on the branch line, the operator does not need to stop the operation on the main pipeline. He only needs to operate the branch mechanism 2. By rotating the rotating shaft 203, the isolation plate 204, which is fixedly connected to the rotating shaft 203, will rotate in the conduit 202. When the isolation plate 204 rotates to the lateral position, it can completely block the fluid inlet leading to the branch pipe 201, thus achieving the cut-off of the branch. To ensure that the cut-off state remains stable throughout the maintenance, the operator then inserts the fixing rod 207 into the fixing groove 206 on the rotating shaft 203. With the support of the support rod 205, the fixing rod 207 firmly locks the rotating shaft 203, thereby solving the problem of having to stop work during maintenance and improving the flexibility and continuity of the operation.

Claims

1. The quick-release oil tap uses a unibody nut, including: The fixing ring (1) and the connecting pipe (5) are provided. The inner wall of the fixing ring (1) is provided with an installation groove (3). A flat pipe (4) is installed in the installation groove (3). A sealing ring (6) is provided on the outer periphery of the flat pipe (4). The connecting pipe (5) is connected to the front side of the fixing ring (1) by a thread. Its features are, The quick-release oil tap with a union connecting nut also includes a connecting rod (8), a fixing block (7), a screw (10) and a washer (11) disposed on the outer wall of the fixing ring (1). The fixing block (7) has a limiting groove (9) for the connecting rod (8) to pass through. The screw (10) is used to pass through the limiting groove (9) and screw into and fix the connecting rod (8). The quick-release oil tap also includes a diversion mechanism (2) with a union connecting nut. The diversion mechanism (2) includes a diversion pipe (201), a guide pipe (202), a support rod (205), and a fixing rod (207) that are interconnected. A rotating shaft (203) is rotatably provided inside the guide pipe (202). An isolation plate (204) is fixed on the rotating shaft (203). A fixing groove (206) is provided on the outer wall of the rotating shaft (203).

2. The quick-release oil tap according to claim 1 uses a union-connected nut, characterized in that, The sealing ring (6) is fixedly connected to the right side of the outer wall of the flat pipe (4), and the left side of the outer wall of the connecting pipe (5) is connected to the right side of the outer wall of the sealing ring (6).

3. The quick-release oil tap according to claim 1 uses a union-connected nut, characterized in that, The connecting rod (8) is fixedly connected to the outer wall of the fixing ring (1), and the fixing block (7) is fixedly connected to the outer wall of the connecting pipe (5).

4. The quick-release oil tap according to claim 1 uses a union-connected nut, characterized in that, The outer wall of the conduit (202) of the diversion mechanism (2) is fixedly connected to the outer wall of the diversion pipe (201).

5. The quick-release oil tap according to claim 1 uses a union-connected nut, characterized in that, The isolation plate (204) rotates within the conduit (202) by the rotation of the rotating shaft (203) to selectively abut against the inlet of the diversion tube (201).

6. The quick-release oil tap according to claim 1 uses a union-connected nut, characterized in that, The screw (10) is pressed onto the fixing block (7) by the washer (11).

7. The quick-release oil tap according to claim 1 uses a union-connected nut, characterized in that, The isolation plate (204) is fixedly connected to the rotating shaft (203).

8. The quick-release oil tap according to claim 1 uses a union-connected nut, characterized in that, The direction of the limiting groove (9) is parallel to the axis of the connecting rod (8).

Images