Sealed-connection oil field flat gate valve

Abstract

The utility model discloses a sealed connection oil field flat gate valve, which relates to the technical field of gate valves and comprises an oil field flat gate valve, a lifting sealing frame is arranged in the oil field flat gate valve, two sealing rings are fixedly connected to the inner wall of the oil field flat gate valve, and a lifting adjusting column is fixedly connected to the top end of the lifting sealing frame. The top end of the lifting adjusting column is rotationally connected with a threaded adjusting rod, the two ends of the oil field flat gate valve are each provided with a set of fixing mechanism, and each fixing mechanism comprises a connecting sliding rod sliding in the oil field flat gate valve. Through the arrangement of the fixed probe, the reset spring, the dismounting driving rod and the dismounting control ring, a worker can conveniently mount and dismount the gate valve and the pipe fitting, the working time consumed for mounting and dismounting the gate valve is greatly shortened, the dismounting and mounting efficiency of the device is effectively improved, and the practicability is high. And the connection sealing performance between the gate valve and the pipe fitting can be improved, and the medium is prevented from leaking when passing through the gate valve.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically a sealed oilfield flat gate valve. Background Technology

[0002] In oilfield operations, precise control of fluid flow is required, such as controlling wellhead flow rate and regulating fluid pressure. Flat gate valves, as reliable fluid control devices, can quickly shut off or release fluid flow when needed.

[0003] According to patent CN220435445U, a sealing connection structure for a flat gate valve used in oil fields is disclosed, including a valve body, a sleeve rod fixedly connected to the top of the valve body, a protective member abutting the top of the sleeve rod, a turntable rotatably connected to the top of the protective member, a transmission rod fixedly connected to the bottom of the turntable, and a valve fixedly connected to the bottom of the transmission rod.

[0004] The above-mentioned solution has good sealing performance during implementation and can effectively prevent media leakage. However, it is inconvenient to install and disassemble the gate valve during implementation. When the pipe fittings are installed on the gate valve with multiple bolts, the installation is not only cumbersome and inefficient, but the sealing at the connection is also poor, which can easily cause media leakage. Therefore, we provide a packing support grid bracket suitable for various types of towers to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a sealed oilfield flat gate valve to solve the problems mentioned in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sealed oilfield flat gate valve, comprising an oilfield flat gate valve, wherein a lifting sealing frame is provided inside the oilfield flat gate valve, two sealing rings are fixedly connected to the inner wall of the oilfield flat gate valve, a lifting adjusting column is fixedly connected to the top of the lifting sealing frame, a threaded adjusting rod is rotatably connected to the top of the lifting adjusting column, and a set of fixing mechanisms are provided at both ends of the oilfield flat gate valve, wherein the fixing mechanism includes a connecting slide rod that slides inside the oilfield flat gate valve, and a fixing probe is fixedly connected to the bottom end of the connecting slide rod.

[0007] Preferably, a return spring is sleeved on the outside of the connecting slide rod. The two ends of the return spring are fixedly connected to the oilfield flat gate valve and the fixed probe, respectively. The return spring plays the role of pushing the fixed probe to reset.

[0008] Preferably, the oilfield flat gate valve has an internal sliding connection of a disassembly drive rod, and the end of the disassembly drive rod is provided with a transmission hinge rod, which can adjust the engagement state of the fixed probe and the pipe fitting.

[0009] Preferably, the two ends of the transmission hinge rod are respectively hinged to the connecting slide rod and the disassembly drive rod via pins, and the transmission hinge rod plays a transmission role.

[0010] Preferably, the outer surface of the oilfield flat gate valve is provided with a disassembly control ring, and the end of the disassembly drive rod is fixedly connected to the disassembly control ring, which is a control component for disassembling pipe fittings.

[0011] Preferably, the top surface of the oilfield flat gate valve is fixedly connected to an internally threaded sleeve, and the lifting adjustment column is slidably connected to the internally threaded sleeve, with the internally threaded sleeve providing support for the sliding of the lifting adjustment column.

[0012] Preferably, the threaded adjusting rod passes through the internal threaded sleeve and is threadedly connected to the internal threaded sleeve, and the internal threaded sleeve can provide stable support for the rotation of the threaded adjusting rod.

[0013] Preferably, an adjustment knob is fixedly connected to the top end of the threaded adjusting rod, and the adjustment knob is a control component for adjusting the internal flow rate of the gate valve.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This application, through the design of a fixed probe, return spring, disassembly drive rod, and disassembly control ring, facilitates the installation and disassembly of the gate valve and pipe fittings by operators, greatly reducing the working time required for installation and disassembly of the gate valve, effectively improving the efficiency of the device, and enhancing the sealing performance of the connection between the gate valve and pipe fittings. This prevents leakage of the medium when passing through the gate valve.

[0016] 2. The lifting sealing frame and sealing ring of this application enable the operator to control the flow rate of the medium inside the gate valve by adjusting the position of the lifting sealing frame, which facilitates the operator to adjust the internal space of the gate valve according to the actual flow rate requirements, thereby improving the applicability of the device.

[0017] 3. This application, through the setting of the lifting adjustment column, threaded adjustment rod and adjustment knob, can provide convenience for the staff to adjust the flow rate of the gate valve, reduce the workload of adjusting the flow rate and improve the adjustment efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the internal structure of the oilfield flat gate valve of this utility model;

[0020] Figure 3 This is a partial structural exploded view of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the disassembly control ring of this utility model;

[0022] Figure 5 This is a schematic diagram of the fixing mechanism of this utility model.

[0023] Labels in the diagram: 1. Oilfield flat gate valve; 2. Lifting sealing frame; 3. Sealing ring; 4. Lifting adjusting column; 5. Threaded adjusting rod;

[0024] 6. Fixing mechanism; 601. Connecting slide rod; 602. Fixing probe; 603. Return spring; 604. Disassembly drive rod; 605. Transmission hinge rod;

[0025] 7. Disassemble the control ring; 8. Internal threaded sleeve; 9. Adjustment knob. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides a technical solution for a sealed connection oilfield flat gate valve.

[0028] Example 1:

[0029] Please see Figure 1 , Figure 2 and Figure 3 The system includes an oilfield flat gate valve 1, which has an internal lifting sealing frame 2. Two sealing rings 3 are fixedly connected to the inner wall of the oilfield flat gate valve 1. The sealing rings 3 and the oilfield flat gate valve 1 have good sealing performance. The lifting sealing frame 2 and the sealing rings 3 can seal the gate valve. The flow rate of the medium inside the gate valve can be controlled by adjusting the position of the lifting sealing frame 2. This allows the staff to adjust the gate valve according to the actual flow rate requirements of the oilfield transport medium, improving the applicability of the device. The lifting sealing frame 2 includes a support frame and sealing plates on both sides. The sealing plates are adapted to the sealing rings 3. When the lifting sealing frame 2 is lowered to the position that completely covers the sealing rings 3, the inside of the gate valve is closed, and the oilfield transport medium cannot flow.

[0030] The top of the lifting sealing frame 2 is fixedly connected to a lifting adjusting column 4, and the top of the lifting adjusting column 4 is rotatably connected to a threaded adjusting rod 5. The rotation of the threaded adjusting rod 5 can drive the lifting adjusting column 4 to rise and fall inside the oilfield flat gate valve 1, thereby adjusting the position of the lifting sealing frame 2 and creating a certain gap between the lifting sealing frame 2 and the sealing ring 3, ultimately achieving the purpose of controlling the medium flow rate. The sealing plates on both sides of the lifting sealing frame 2 and the sealing ring 3 are all inclined at a certain angle, which can better improve the sealing effect of the gate valve.

[0031] Example 2:

[0032] An internally threaded sleeve 8 is fixedly connected to the top surface of the oilfield flat gate valve 1. A threaded adjusting rod 5 passes through the internally threaded sleeve 8 and is threadedly connected to it. A lifting adjusting column 4 is slidably connected to the internally threaded sleeve 8. The internally threaded sleeve 8 has a thread that matches the threaded adjusting rod 5. When the threaded adjusting rod 5 rotates, under the action of the thread, the threaded adjusting rod 5 can drive the lifting adjusting column 4 and the lifting sealing frame 2 to rise inside the oilfield flat gate valve 1. The sealing ring 3 and the inner wall of the oilfield flat gate valve 1 can limit the rise of the lifting sealing frame 2 to prevent the lifting sealing frame 2 and the lifting adjusting column 4 from rotating during the rise and fall with the threaded adjusting rod 5. The threaded adjusting rod 5 and the internally threaded sleeve 8 have a self-locking effect.

[0033] The top of the threaded adjusting rod 5 is fixedly connected to an adjusting knob 9. The surface of the adjusting knob 9 has a large friction force, which can prevent the operator from slipping when turning the adjusting knob 9, and make it convenient for the operator to adjust the flow rate inside the gate valve.

[0034] Example 3:

[0035] Please see Figure 4 and Figure 5 Both ends of the oilfield flat gate valve 1 are equipped with a set of fixing mechanisms 6. The fixing mechanism 6 includes a connecting slide rod 601 that slides inside the oilfield flat gate valve 1. The end of the fixing probe 602 has a curved surface with a certain angle. When the pipe fitting is installed with the gate valve, the pipe fitting can be squeezed by squeezing the gate valve, which will push the connecting slide rod 601 to slide inside the oilfield flat gate valve 1. A sealing gasket is installed at the contact position between the oilfield flat gate valve 1 and the pipe fitting, which can improve the sealing effect between the gate valve and the pipe fitting. By setting multiple fixing mechanisms 6, the fixing effect of the device on the pipe fitting can be effectively improved.

[0036] A fixed probe 602 is fixedly connected to the bottom end of the connecting slide rod 601. When the pipe squeezes the sealing gasket, the fixed probe 602 will be reset under the push of the return spring 603, thereby locking the end of the pipe and keeping the pipe and the gate valve fixed. This effectively reduces the workload of the workers who install the gate valve and pipe by bolts, and facilitates the installation and disassembly of the gate valve.

[0037] A return spring 603 is sleeved on the outside of the connecting slide rod 601. The two ends of the return spring 603 are fixedly connected to the oilfield flat gate valve 1 and the fixed probe 602, respectively. When the pipe enters a certain position in the gate valve, the pressure on the fixed probe 602 disappears. At this time, the return spring 603 will push the fixed probe 602 to reset, thereby engaging with the pipe and completing the fixing operation between the pipe and the gate valve. The fixed probe 602 is tightly engaged with the pipe, which can apply greater pressure to the pipe. The sealing gasket also has greater friction, which can effectively prevent the pipe from rotating due to external factors after it is inserted into the gate valve. The shaking caused by the characteristics of the return spring 603 itself is within the acceptable range of this device and will not affect the fixing effect of the fixed probe 602 on the pipe.

[0038] The oilfield flat gate valve 1 has an internal sliding connection of a disassembly drive rod 604. The end of the disassembly drive rod 604 is provided with a transmission hinge rod 605. The two ends of the transmission hinge rod 605 are respectively hinged to the connecting slide rod 601 and the disassembly drive rod 604 through pins. The disassembly drive rod 604 and the transmission hinge rod 605 facilitate the elimination of the jamming effect between the fixed probe 602 and the end of the pipe. The oilfield flat gate valve 1 has a bend inside that is adapted to the movement of the transmission hinge rod 605 to prevent the transmission hinge rod 605 from colliding with the inner wall of the oilfield flat gate valve 1 during transmission.

[0039] The outer surface of the oilfield flat gate valve 1 is provided with a disassembly control ring 7. The end of the disassembly drive rod 604 is fixedly connected to the disassembly control ring 7. When the operator wants to remove the pipe from the gate valve, he only needs to pull the disassembly control ring 7. The movement of the disassembly control ring 7 can drive the disassembly drive rod 604 to move. The movement of the disassembly drive rod 604 can drive the connecting slide rod 601 to rise through the transmission hinge rod 605, thereby canceling the jamming state between the fixed probe 602 and the pipe. At this time, the pipe can be easily removed from the gate valve, which provides greater convenience for the installation and disassembly of the device.

[0040] Working principle: When the operator wants to install the pipe fitting to the gate valve, first insert the end of the pipe fitting into the gate valve. During the process of the pipe fitting entering the gate valve, it will squeeze the fixed probe 602, causing the fixed probe 602 to slide inside the oilfield flat gate valve 1. When the pipe fitting comes into contact with the gate valve, the fixed probe 602 will be pushed by the return spring 603 to lock the end of the pipe fitting. At this time, the pipe fitting and the gate valve will remain in a fixed state. Then, the operator will turn the adjustment knob 9 according to the flow rate requirements of the conveying medium. The rotation of the adjustment knob 9 can drive the lifting sealing frame 2 to rise and fall inside the oilfield flat gate valve 1 through the lifting adjustment column 4 and the threaded adjustment rod 5, thereby adjusting the flow space between the lifting sealing frame 2 and the sealing ring 3.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A seal boned oilfield flat gate valve comprising an oilfield flat gate valve (1) characterized by: The inside of the oil field flat gate valve (1) is provided with a lifting sealing frame (2), the inner wall of the oil field flat gate valve (1) is fixedly connected with two sealing rings (3), the top end of the lifting sealing frame (2) is fixedly connected with a lifting adjusting column (4), the top end of the lifting adjusting column (4) is rotatably connected with a threaded adjusting rod (5), and both ends of the oil field flat gate valve (1) are provided with a group of fixing mechanisms (6). The fixing mechanism (6) comprises a connecting sliding rod (601) sliding in the oil field flat gate valve (1), and the bottom end of the connecting sliding rod (601) is fixedly connected with a fixed probe (602).

2. A seal boned oilfield flat slide valve according to claim 1 wherein: The connecting sliding rod (601) is externally sleeved with a reset spring (603), and both ends of the reset spring (603) are fixedly connected with the oil field flat gate valve (1) and the fixed probe (602) respectively.

3. A seal boned oilfield flat slide valve according to claim 1 wherein: The inside of the oil field flat gate valve (1) is slidably connected with a dismounting driving rod (604), and the end of the dismounting driving rod (604) is provided with a transmission hinged rod (605).

4. A seal boned oilfield flat slide valve according to claim 3 wherein: Both ends of the transmission hinged rod (605) are hingedly connected with the connecting sliding rod (601) and the dismounting driving rod (604) through a pin shaft respectively.

5. A seal boned oilfield flat slide valve according to claim 3 wherein: The outer surface of the oil field flat gate valve (1) is provided with a dismounting control ring (7), and the end of the dismounting driving rod (604) is fixedly connected with the dismounting control ring (7).

6. A seal boned oilfield flat slide valve according to claim 1 wherein: The top surface of the oil field flat gate valve (1) is fixedly connected with an internally threaded sleeve (8), and the lifting adjusting column (4) is slidably connected with the internally threaded sleeve (8).

7. A seal boned oilfield flat slide valve according to claim 6 wherein: The threaded adjusting rod (5) penetrates through the internally threaded sleeve (8) and is threadedly connected with the internally threaded sleeve (8).

8. A seal boned oilfield flat slide valve according to claim 1 wherein: The top end of the threaded adjusting rod (5) is fixedly connected with an adjusting knob (9). The top end of the threaded adjusting rod (5) is fixedly connected with an adjusting knob (9).

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