Flow through valve

Abstract

The utility model discloses a flow over -current valve, outer valve body and inner throttle cylinder, the inner throttle cylinder is equipped with several groups radial flow hole and a group throttle hole, the inner hole chamber of inner throttle cylinder still is equipped with the ball valve core, the inner hole chamber includes the limiting portion and is used for the movable part of ball valve core, the ball valve core is rolled in movable part under the medium thrust, and the throttle hole is located on the limiting portion of valve export side setting, the utility model discloses a flow over -current valve mainly applies in water, natural gas, propylene or oil product medium special working condition demand's conveying pipeline, its radial flow hole, utilize known fluid density, pressure, temperature, flow rate etc, the CV value coefficient of existing data's calculation, set the aperture size of throttle hole, promote the automatic switching when system fluid pressure or flow reaches the calculation threshold value, reach with ball valve core rolling realizes switching, different medium flow control, obtain the flow control purpose of preset calculation value, realize reaches specific production condition.

Description

Technical Field

[0001] This utility model relates to the field of pipeline equipment technology, specifically to a flow control valve. Background Technology

[0002] When used as a functional valve in fluid pipelines under special operating conditions, an overflow valve can limit the supply flow rate of the medium within a predetermined range, regulating the flow rate of the fluid through its own characteristics. If the flow rate exceeds the predetermined range, it indicates an abnormal operating state, and the valve automatically adjusts the flow of liquid or gas. Especially when used in pipelines transporting fluid media such as water, natural gas, propylene, or oil, it switches the transport flow rate state when the fluid pressure or flow rate in the system exceeds a set calculated threshold, thus meeting specific production objectives. Utility Model Content

[0003] In view of the prior art, the purpose of this utility model is to provide a flow overflow valve that uses known fluid density, pressure, temperature, flow rate, etc., calculates the CV value coefficient from existing data, sets the orifice size, etc., and uses fluid pressure to drive the ball valve core to roll and switch, thereby achieving a specific production purpose.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a flow overflow valve, comprising an outer valve body and an inner throttling cylinder, wherein the inner throttling cylinder is provided with a plurality of radial flow holes and a set of throttling holes, and a ball valve core is also provided in the inner cavity of the inner throttling cylinder, wherein the inner cavity includes a limiting part and a movable part for the ball valve core, wherein the ball valve core rolls within the movable part under the thrust of the medium, and the throttling hole is located on the limiting part on the valve outlet side.

[0005] As a further feature of the above scheme, the inner throttling cylinder includes an upper cylinder and a lower cylinder, which are inserted into each other at the middle, and the two ends of the inner throttling cylinder are abutted against the inside of the outer valve body.

[0006] As a further feature of the above scheme, a transition section is provided between the limiting part and the movable part of the inner throttling cylinder.

[0007] As a further feature of the above solution, the transition section is provided with a concave arc surface that matches the ball valve core.

[0008] As a further provision of the above scheme, the outer valve body includes an upper valve section and a lower valve section, and both ends of the upper valve section and the lower valve section are provided with flanges. A valve cavity is provided on the opposite side of the upper valve section and the lower valve section, and the diameter of the valve cavity is larger than the outer diameter of the inner throttling cylinder.

[0009] As a further feature of the above scheme, the valve cavity is also provided with a card slot, the size of which matches the outer diameter of the inner throttling cylinder, and the distance between the card slots provided on the upper valve section and the lower valve section is matched with the length of the inner throttling cylinder.

[0010] Beneficial Effects: This utility model's flow control valve is mainly used in pipelines transporting media with special operating conditions, such as natural gas, propylene, or oil. Its radial flow orifice, utilizing known fluid density, pressure, temperature, flow velocity, and other existing data, calculates a reasonable CV value coefficient and determines the orifice diameter. This allows for automatic switching when the fluid pressure or flow rate reaches a calculated threshold. The ball valve core rolls and switches, allowing only fluid within the calculated range to pass through the orifice, achieving the calculated flow rate and thus meeting specific production objectives. (See attached figures for details.) Figure 1 This is a schematic diagram of the internal structure of the overflow valve of this utility model.

[0011] Figure 2 This is a schematic diagram of the internal components of the overflow valve of this utility model.

[0012] Figure 3 This is a schematic diagram of the flow control valve structure of this utility model.

[0013] Reference numerals: 1. Outer valve body; 11. Upper valve section; 12. Lower valve section; 13. Flange section; 14. Valve cavity; 15. Insertion section; 2. Inner throttling cylinder; 21. Upper cylinder; 22. Lower cylinder; 3. Radial flow orifice; 4. Throttling orifice; 5. Ball valve core; 6. Inner cavity; 61. Limiting part; 62. Moving part; 63. Transition part; 64. Concave arc surface. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other.

[0015] like Figure 1-3 The diagram shows a flow control valve, comprising an outer valve body 1 and an inner throttling cylinder 2. The inner throttling cylinder 2 is provided with several sets of radial flow holes 3 and a set of throttling holes 4. A ball valve core 5 is also provided in the inner cavity 6 of the inner throttling cylinder 2. The inner cavity 6 includes a limiting part 61 and a movable part 62 for the ball valve core 5. The ball valve core 5 rolls within the movable part 62 under the thrust of the medium. The throttling hole 4 is located on the limiting part 61 on the valve outlet side.

[0016] As described above, the flow valve in this embodiment also determines the orifice size of the radial flow orifice 3 and the throttling orifice 4 inside the inner throttling cylinder 2 by setting the dimensions of the inner throttling cylinder 2 and the ball valve core 5, combined with known fluid density, pressure, temperature, flow velocity, etc., and by calculating the CV value flow coefficient. This enables the weight of the ball valve core 5 and the critical pressure to combine with the pressure difference change of the normal flow rate, so that when the threshold value exceeds the calculated range, the flow rate is switched by triggering the ball valve core 5. This allows the medium to be supplied under different production conditions and automatically switch different flow rates to achieve specific production objectives.

[0017] As a further feature of the above scheme, the inner throttling cylinder 2 includes an upper cylinder 21 and a lower cylinder 22, which are inserted into each other at the middle, and the two ends of the inner throttling cylinder 2 are abutted against the inside of the outer valve body 1.

[0018] As a further provision of the above scheme, a transition portion 63 is provided between the limiting portion 61 and the movable portion 62 of the inner throttling cylinder 2.

[0019] As a further feature of the above solution, the transition portion 63 is provided with a concave arc surface 64 that matches the ball valve core 5.

[0020] As a further provision of the above scheme, the outer valve body 1 includes an upper valve part 11 and a lower valve part 12, and both ends of the upper valve part 11 and the lower valve part 12 are provided with flange parts 13. A valve cavity 14 is provided on the opposite side of the upper valve part 11 and the lower valve part 12, and the diameter of the valve cavity 14 is larger than the outer diameter of the inner throttling cylinder 2.

[0021] As a further provision of the above scheme, the valve cavity 14 is also provided with a card insertion part 15. The size of the card insertion part 15 matches the outer diameter of the inner throttling cylinder 2, and the distance between the card insertion parts 15 provided on the upper valve part 11 and the lower valve part 12 is matched with the length of the inner throttling cylinder 2.

[0022] As mentioned above (reference) Figure 1 The overflow valve of this embodiment, with its ball valve core 5, radial flow orifice 3, and throttling orifice 4 arranged in the inner throttling cylinder 2, is set by calculating and setting the CV value coefficient. When the overflow valve is used in a pipeline system, the medium flows normally through the radial flow orifice 3 twice. The ball valve core 5 is pushed to one side by the pressure difference thrust of the medium under normal flow rate. When the pressure difference exceeds the calculated threshold, the water hammer force of the medium pushes the ball valve core 5 to roll in the movable part 62 of the inner cavity 6. When the internal fluid pressure or flow rate exceeds the normal threshold range, the end of the inner cavity (the other side) moves with the medium force, so that the large-diameter radial flow orifice 3 is no longer direct, leaving only a small amount of fluid to pass through the throttling orifice 4 of the valve core for flow, thereby switching the flow rate of the medium. The overflow valve achieves the purpose of flow control and meets the automatic flow orifice control requirements of production.

[0023] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of this utility model and its equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A flow control valve, characterized in that: The outer valve body (1) and the inner throttling cylinder (2) are provided with several sets of radial flow holes (3) and a set of throttling holes (4). The inner cavity (6) of the inner throttling cylinder (2) is also provided with a ball valve core (5). The inner cavity (6) includes a limiting part (61) and a movable part (62) for the ball valve core (5). The ball valve core (5) rolls in the movable part (62) under the thrust of the medium. The throttling hole (4) is located on the limiting part (61) on the valve outlet side.

2. The flow control valve according to claim 1, characterized in that: The inner throttling cylinder (2) includes an upper cylinder (21) and a lower cylinder (22), which are inserted into each other in the middle, and the two ends of the inner throttling cylinder (2) are abutted against the inside of the outer valve body (1).

3. The flow control valve according to claim 1, characterized in that: A transition section (63) is provided between the limiting part (61) and the movable part (62) of the inner throttling cylinder (2).

4. A flow control valve according to claim 3, characterized in that: The transition section (63) is provided with a concave arc surface (64) that matches the ball valve core (5).

5. A flow control valve according to claim 1, characterized in that: The outer valve body (1) includes an upper valve part (11) and a lower valve part (12), and both ends of the upper valve part (11) and the lower valve part (12) are provided with flange parts (13). A valve cavity (14) is provided on the opposite side of the upper valve part (11) and the lower valve part (12), and the diameter of the valve cavity (14) is larger than the outer diameter of the inner throttling cylinder (2).

6. A flow control valve according to claim 5, characterized in that: The valve cavity (14) is also provided with a card insertion part (15), the size of which matches the outer diameter of the inner throttling cylinder (2), and the distance between the card insertion parts (15) provided on the upper valve part (11) and the lower valve part (12) matches the length of the inner throttling cylinder (2).

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