Novel high-pressure low-flow angle regulator
By designing a high-pressure, low-flow angle regulator with an inverted conical valve body and an electric actuator, the problem of the control valve's inability to reduce viscosity loss in high-pressure, low-flow scenarios was solved, achieving efficient flow control and process simplification, and reducing engineering costs.
Patent Information
- Application Number
- CN202423020442.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Existing control valves cannot effectively reduce viscosity loss in high-pressure, low-flow scenarios, and cannot directly achieve smooth fluid transport from the high-pressure section to the low-pressure section, resulting in high engineering construction investment and high operation and maintenance costs.
A novel high-pressure, low-flow angle regulator was designed, employing an inverted conical valve body and an electric actuator. The flow area is adjusted by the lifting and lowering of the valve core shaft driven by the motor, achieving precise control of the inlet and outlet hydraulic pressure difference between 2 and 3 MPa and the flow rate between 0 and 3 m³/h.
It enables precise regulation of low flow rate under high pressure, reduces viscosity loss, simplifies the process flow, and reduces engineering construction investment and operation and maintenance costs.
Smart Images
Figure CN223536957U_ABST
Abstract
Description
Technical Field
[0001] This utility model pertains to flow regulators, and particularly relates to a novel high-pressure, low-flow angle regulator. Background Technology
[0002] With the development of the chemical industry, non-Newtonian fluids have found wider applications. Currently, fluids used in processes cannot flow directly from high-pressure to low-pressure sections; this requires adding numerous pipelines, pressure-reducing valves, or intermediate buffer tanks, resulting in significant investment. Currently, the main control valves on the market are ball valves, butterfly valves, and regulating valves. These valves use equal-diameter connections at the inlet and outlet. When adjusting flow under constant pressure differential, the valve's cross-sectional area decreases, increasing the flow velocity. As the flow velocity increases, the shear rate increases, leading to increased viscosity loss and failing to achieve the goal of reducing viscosity loss. Therefore, designing a control valve suitable for high-viscosity, high-pressure differential applications, capable of precise adjustment within an inlet / outlet pressure differential of 2-3 MPa and a flow rate of 0-3 m³ / h, and compatible with electromagnetic flow meters, is an urgent problem to be solved. Summary of the Invention
[0003] To address the shortcomings of existing technologies, this invention provides a novel high-pressure, low-flow angle regulator.
[0004] This utility model discloses a novel high-pressure, low-flow angle regulator, which includes a valve body and an electric actuator. The valve body is a long inverted conical tube with an inlet pipe on the upper outer wall and an outlet at the lower end. The output end of the electric actuator is fixedly connected to the valve core shaft, which is an inverted conical body placed inside the valve body and cooperating with it.
[0005] As a further improvement of this utility model, the electric actuator is a linear electric actuator, which is composed of a motor, guide rails, screw sleeves, linkage rods, connectors, and a mounting frame. The motor is fixed on the top plate of the square mounting frame, and two vertical guide rails are symmetrically arranged inside the mounting frame. The output end of the motor is placed inside the mounting frame and a screw sleeve is fixed at its lower end. A linkage rod is threadedly connected to the lower end of the screw sleeve, and a connector is fixed at the lower end of the linkage rod. The connector is placed between the two guide rails and is slidably connected to them.
[0006] As a further improvement of this utility model, a valve body is provided below the base plate of the square mounting bracket. A valve cover is fixedly installed on the base plate of the mounting bracket by bolt I. The boss at the center of the bottom end of the valve cover is placed inside the upper port of the valve body and the valve cover is fixed together with the upper port of the valve body by bolt II. A sealing gland is threadedly connected inside the upper port of the valve cover. The upper end of the valve core shaft inside the valve body passes through the valve cover and the sealing gland and is fixedly connected to the bottom end of the connector.
[0007] As a further improvement of this utility model, the valve core shaft is composed of two or more shaft sections whose diameter increases sequentially from top to bottom, and the lowest shaft section is a conical body that fits into the inner cavity of the valve body.
[0008] As a further improvement of this utility model, one or more annular grooves I are provided in the upper port of the sealing gland, and an O-ring I is provided in the annular groove I.
[0009] As a further improvement of this utility model, an annular groove II is provided at the bottom end of the sealing gland, and an O-ring II is provided in the annular groove II.
[0010] This utility model discloses a novel high-pressure, low-flow angle regulator with a reasonable structural design. It features small size, stable performance, and long service life. It is easy to operate, simple to install, and has low viscosity loss. It can replace existing valve groups and buffer tanks in process applications, thereby simplifying the process flow, reducing engineering construction investment, and reducing operation and maintenance costs. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model;
[0012] Figure 2 This is a cross-sectional view of the sealing gland structure of this utility model. Detailed Implementation
[0013] This utility model discloses a novel high-pressure, low-flow angle regulator, comprising a valve body 2 and an electric actuator. The electric actuator is a linear electric actuator, consisting of a motor 1, guide rails 15, a screw sleeve 12, a linkage rod 13, a connector 14, and a mounting frame 3. The motor 1 is fixed on the top plate of the square mounting frame 3. Two vertical guide rails 15 are symmetrically arranged inside the mounting frame 3. The output end of the motor 1 is placed inside the mounting frame 3, and a screw sleeve 12 is fixed at its lower end. A linkage rod 13 is threadedly connected to the lower end of the screw sleeve 12. A connector 14 is fixed at the lower end of the linkage rod 13. The connector 14 is placed between the two guide rails 15 and is slidably connected to them.
[0014] The valve body 2 is a long inverted conical tube with an upper diameter larger than a lower diameter. An inlet pipe 7 is provided on the upper outer wall of the valve body 2, and an outlet is provided at the lower end. A valve core shaft 6 is provided inside the valve body 2 and cooperates with it.
[0015] In order to achieve precise adjustment of pressure difference in the range of 2~3MPa and flow rate in the range of 0~3m³ / h, the valve core shaft 6 can be composed of two or more shaft sections with progressively increasing diameter from top to bottom, wherein the lowest shaft section is an inverted cone shape that fits into the inner cavity of the valve body 2.
[0016] A valve cover 4 is fixedly installed on the base plate of the mounting bracket 3 by bolt I. The boss at the center of the bottom end of the valve cover 4 is placed inside the upper port of the valve body 2 and fixed together with the upper port of the valve body 2 by bolt II. A sealing cover 5 is threadedly connected to the upper port of the valve cover 4. The upper end of the valve core shaft 6 inside the valve body 2 passes through the valve cover 4 and the sealing cover 5 and is fixedly connected to the bottom end of the connector 14. Three annular grooves I8 are provided in the upper port of the sealing cover 5. An O-ring I9 is provided in the annular groove I8. An annular groove II10 is provided at the bottom end of the sealing cover 5. An O-ring II11 is provided in the annular groove II10. Both the O-ring I9 and the O-ring II11 can play a sealing role.
[0017] Taking a high-pressure fluid with an inlet pressure of 16MPa as an example, to achieve a fluid outlet pressure of 13-14MPa using the novel high-pressure low-flow angle regulator prepared in this embodiment, the conical tube of the valve body 2 is designed to be 900-1000mm, preferably 950mm, and the regulator is installed at the position where the high-pressure pipeline delivers liquid to the low-pressure pipeline, so that the inlet pipe 7 at the upper end of the valve body 2 is connected to the high-pressure pipeline and the outlet at the lower end is connected to the low-pressure pipeline; then, the motor 1 is started, the output end of the motor 1 rotates, driving the screw sleeve 12 to rotate, causing the linkage rod 13 to move upward within the screw sleeve 12, thus... When the valve core shaft 6 is lifted upwards, a fluid channel is formed between the valve core shaft 6 and the inner wall of the valve body 2. The high-pressure liquid can then flow from the inlet pipe 7 to the outlet at the lower end of the valve body 2, with the flow rate controlled at 1 m³ / h. During the flow of the high-pressure liquid, the flow rate gradually increases as the flow area gradually decreases. At the same time, the resistance of the equipment to the liquid also gradually increases. Due to the increase in resistance, the flow of the high-pressure liquid needs to consume the liquid pressure to achieve the flow of the liquid, thereby realizing the pressure reduction process. Finally, the liquid pressure at the outlet is 13 MPa, achieving a pressure difference of 3 MPa between the inlet and outlet.
[0018] Meanwhile, this device can also adjust the liquid outlet pressure by adjusting the gap between the valve core shaft 6 and the valve body 2 at any time during operation via an electric actuator: when the valve core shaft 6 rises and the gap between it and the valve body 2 increases, the liquid flow rate increases, the equipment's resistance to the liquid decreases, and the pressure difference between the inlet and outlet ends decreases; when the valve core shaft 6 falls and the gap between it and the valve body 2 decreases, the liquid flow rate decreases, the equipment's resistance to the liquid increases, and the pressure difference between the inlet and outlet ends increases; that is, the size of the gap between the valve core shaft 6 and the valve body 2 is inversely proportional to the size of the pressure difference between the inlet and outlet ends.
Claims
1. A novel high-pressure, low-flow angle regulator, comprising a valve body (2), characterized in that... It also includes an electric actuator. The valve body (2) is a long inverted conical tube with a diameter of 900-1000 mm. An inlet pipe (7) is provided on the upper outer wall of the valve body (2) to connect with the high-pressure pipeline, and an outlet pipe is provided at the lower end to connect with the low-pressure pipeline. The output end of the electric actuator is fixedly connected to the valve core shaft (6). The valve core shaft (6) is an inverted conical body, placed in the inner cavity of the valve body (2) and cooperating with it. The electric actuator is a linear electric actuator, which consists of a motor (1), a guide rail (15), a screw sleeve (12), a linkage rod (13), a connecting piece (14), and a mounting bracket (3). The motor (1) is fixed on the top plate of the square mounting bracket (3). Two vertical guide rails (15) are symmetrically arranged in the mounting bracket (3). The output end of the motor (1) is placed in the mounting bracket (3) and a screw sleeve (12) is fixed at its lower end. The lower end of the screw sleeve (12) is threadedly connected. There is a linkage rod (13), and a connector (14) is fixed at the lower end of the linkage rod (13). The connector (14) is placed between two guide rails (15) and slidably connected to them. A valve body (2) is provided below the bottom plate of a square mounting bracket (3). A valve cover (4) is fixedly installed on the bottom plate of the mounting bracket (3) by bolt I. The boss at the center of the bottom end of the valve cover (4) is placed inside the upper port of the valve body (2) and the valve cover (4) is fixed together with the upper port of the valve body (2) by bolt II. A sealing cover (5) is threaded inside the upper port of the valve cover (4). The upper end of the valve core shaft (6) inside the valve body (2) passes through the valve cover (4) and the sealing cover (5) and is fixedly connected to the bottom end of the connector (14). The valve core shaft (6) is composed of two or more shaft sections with increasing diameter from top to bottom, and the lowest shaft section is a conical body that fits into the inner cavity of the valve body (2).
2. The novel high-pressure low-flow angle regulator according to claim 1, characterized in that... The sealing cap (5) has one or more annular grooves I (8) inside its upper port, and an O-ring I (9) is provided inside the annular grooves I (8).
3. The novel high-pressure low-flow angle regulator according to claim 2, characterized in that: An annular groove II (10) is provided at the bottom of the sealing cap (5), and an O-ring II (11) is provided in the annular groove II (10).