A novel electric needle throttle valve

Abstract

A novel electric needle-type throttle valve is equipped with an electric actuator. When powered on, the electric actuator can be remotely operated via mobile phone or computer software to control the needle-type throttle valve and regulate the gas flow. The software can accurately display the gas flow rate, realizing the digital intelligence of the throttle valve. This eliminates the need for personnel to work on the well site, saving production costs and avoiding safety hazards in special operating conditions. The electric actuator also has a manual crank wheel. If the electric motor fails to operate, the crank wheel can be manually operated to open or close the valve in an emergency. The operation is simple and convenient, increasing the safety of the valve.

Description

Technical Field

[0001] This utility model belongs to the field of petroleum machinery, and specifically relates to a novel electric needle throttle valve. Background Technology

[0002] Currently, in actual oilfield production, manual needle-type throttle valves are generally used to regulate gas flow. This requires personnel to be on-site to manually operate the needle-type throttle valve under pressure. The valve has a large opening and closing torque, making it inconvenient to use, with long working hours, and the judgment of gas flow is not very accurate. The valve needle or valve seat of the throttle valve is easily damaged by gas erosion over a long period of time, requiring the entire throttle valve to be removed and sent to the manufacturer for repair. This cannot be maintained on-site in a timely manner, which is extremely inconvenient and increases the labor intensity of the operators. These are problems that both production and user units need to solve. Summary of the Invention

[0003] To address the technical challenges of manual needle valves, such as high opening and closing torque, inconvenience in use, inaccurate judgment of gas flow, and inconvenience in repair, this invention provides a novel electric needle valve.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A novel electric needle-type throttle valve includes: a lower flange, an O-ring seal, a valve seat, a valve needle, a valve body, a valve stem, packing, a packing gland, a bracket, a needle roller bearing, a copper sleeve, a cap, an electric actuator, an internal hex bolt, an oil nozzle, a guide key, and a stop screw; its key feature is that the valve stem is connected to the valve needle and locked with a stop screw, passing through the valve body as a whole; the packing is placed in the packing cavity of the valve body and pressed tightly with a packing gland to ensure close contact between the packing and the valve stem for sealing; the bracket is screwed onto the upper end of the valve body; the guide key is placed between the valve stem keyway and the bracket boss to prevent the valve stem from rotating circumferentially; the copper sleeve has internal threads and is screwed onto the valve stem. Needle roller bearings are placed on the steps of the bracket at both ends. The caps are tightened onto the bracket to compact the needle roller bearings. The transmission combination of the copper sleeve and the needle roller bearings can greatly reduce the switching torque of the throttle valve under pressure. The valve seat is placed in the groove of the lower flange and sealed with an O-ring. The lower flange is tightened onto the valve body and sealed with an O-ring. An electric actuator is placed at the top of the bracket and connected with hex bolts. The electric actuator is internally connected to the copper sleeve. The oil nozzle is installed on the outer periphery of the bracket. When the electric actuator is remotely controlled, the copper sleeve and the needle roller bearings are rotated, which drives the valve stem and the valve needle to move up and down together, realizing the opening or closing of the needle throttle valve.

[0006] The advantages of this utility model are as follows: A novel electric needle-type throttle valve is equipped with an electric actuator. When the power is on, the electric actuator can be remotely operated via mobile phone or computer software to control the needle-type throttle valve and adjust the gas flow. The gas flow rate can be accurately displayed on the software, realizing the digital intelligence of the throttle valve. No personnel are required to work on the well site, saving production costs and avoiding safety hazards in special working conditions. The electric actuator has a manual crank. If the electric motor fails to operate, the crank can be manually operated to open or close the valve in an emergency. The operation is simple and convenient, increasing the safety of the valve. The sealing surfaces of the valve needle and valve seat of the throttle valve are overlaid with nickel alloy, which improves the hardness and corrosion resistance of the sealing surface, greatly reduces the erosion damage of the sealing surface by gas, and extends the service life of the components. When the valve needle or valve seat inside the throttle valve is damaged and the gas flow cannot be adjusted, the valve can be used again simply by removing the lower flange on site, replacing the valve needle or valve seat, and reinstalling the lower flange. The maintenance is simple and convenient, reducing the workload of operators and the maintenance cost of the throttle valve. In summary, the new electric needle valve has a simple structure, is easy to install and maintain, and is software-controlled, making it very suitable for the construction of digital and intelligent equipment in oil fields. Attached Figure Description

[0007] Appendix Figure 1 This is a schematic diagram of the structure of a novel electric needle-type throttle valve according to this utility model;

[0008] Appendix Figure 1 This utility model discloses a novel electric needle throttle valve, comprising: a lower flange 1, an O-ring seal 2, an O-ring seal 3, a valve seat 4, a valve needle 5, a valve body 6, a valve stem 7, packing 8, a packing gland 9, a bracket 10, a needle roller bearing 11, a copper sleeve 12, a cap 13, an electric actuator 14, an internal hex bolt 15, an oil nozzle 16, a guide key 17, and a stop screw 18. Detailed Implementation

[0009] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0010] The valve stem 7 is connected to the valve needle 5 and locked with the stop screw 15. The entire stem passes through the inside of the valve body 6. The packing 8 is placed in the packing cavity of the valve body 6 and pressed down with the packing gland 9 to ensure tight contact between the packing 8 and the valve stem 7, thus providing a seal. The bracket 10 is screwed onto the upper end of the valve body 6. The guide key 17 is placed between the keyway of the valve stem 7 and the boss of the bracket 10 to prevent the valve stem 7 from rotating circumferentially. The copper sleeve 12 has internal threads and is screwed onto the valve stem 7. Needle roller bearings 11 are placed on the steps of the bracket 10 at both ends of the copper sleeve 12. The cap 13 is tightened onto the bracket 10 to press the needle roller bearings 11 firmly. The copper sleeve 12 and the needle roller bearings 11 are tightly closed. The transmission assembly can greatly reduce the switching torque of the throttle valve under pressure. The valve seat 4 is placed in the groove of the lower flange 1 and sealed with an O-ring 2. The lower flange 1 is tightened onto the valve body 6 and sealed with an O-ring 3. An electric actuator 14 is placed at the top of the bracket 10 and connected with an internal hex bolt 15. The electric actuator 14 is internally connected to the copper sleeve 12. The oil nozzle 16 is installed on the periphery of the bracket 10. When the electric actuator 14 is remotely controlled, the copper sleeve 12 and the needle roller bearing 11 are rotated, which drives the valve stem 7 and the valve needle 5 to move up and down together, thereby opening or closing the needle throttle valve.

[0011] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments described herein, but is accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A novel electrically powered needle-type restriction valve comprising: The valve stem comprises a lower flange, an O-ring, a valve seat, a valve needle, a valve body, a valve stem, packing, a packing gland, a bracket, a needle roller bearing, a copper sleeve, a cap, an electric actuator, an internal hex bolt, an oil nozzle, a guide key, and a stop screw. Its features include: the valve stem is connected to the valve needle and locked with a stop screw, passing entirely through the valve body; the packing is placed in the packing cavity of the valve body and pressed tightly with a packing gland to ensure close contact between the packing and the valve stem, providing a seal; the bracket is screwed onto the upper end of the valve body; and the guide key is placed between the valve stem keyway and the bracket boss to prevent the valve stem from rotating circumferentially.

2. A new electrically operated needle restrictor valve as claimed in claim 1, characterized in that: The copper sleeve has internal threads and is screwed onto the valve stem. Needle roller bearings are placed on the steps of the bracket at both ends of the copper sleeve. The cap is tightened onto the bracket to press the needle roller bearings firmly. The transmission combination of the copper sleeve and the needle roller bearings can greatly reduce the switching torque of the throttle valve when it is under pressure.

3. A new electrically operated needle restrictor valve as claimed in claim 1, wherein: The valve seat is placed in the groove of the lower flange and sealed with an "O" ring. The lower flange is tightened onto the valve body and sealed with an "O" ring.

4. A new electrically operated needle restrictor valve as claimed in claim 1, characterized in that: An electric actuator is placed at the top of the bracket and connected with an internal hex bolt. The electric actuator is connected to a copper sleeve inside. The oil nozzle is installed on the outside of the bracket. When the electric actuator is remotely controlled, the copper sleeve and the needle roller bearing are rotated, which drives the valve stem and the valve needle to move up and down together, thereby opening or closing the needle valve.

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