A straight-through cage-type throttle valve

Abstract

The utility model relates to throttle valve technical field especially for a kind of straight-through cage type throttle valve, including valve body assembly, lower valve cover assembly, upper valve cover assembly, cage assembly, plunger assembly and drive assembly, the valve body assembly includes valve body, in the utility model, by the valve body, first limiting protrusion, cage body, second limiting protrusion, transmission shaft and transmission sleeve being set, the device can be limited by the first limiting protrusion cooperation lower valve cover body, upper valve cover body to cage body in the valve body body, by lower valve cover body, upper valve cover body is limited to valve stem, by the second limiting protrusion cooperation transmission sleeve in the inside of cage body to plunger body is limited, by transmission sleeve and transmission shaft are driven, so that the device can be quickly disassembled, the device has higher production efficiency when producing assembly, and when replacing its internal component, it is more convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of throttle valve technology, specifically a straight-through cage-type throttle valve. Background Technology

[0002] Cage-type throttle valves utilize the movement of their plunger up and down within an orifice-filled cage to create different flow areas, thereby controlling the flow rate and pressure of the medium. This throttles the medium in the pipeline, ensuring the safe and stable operation of the system. Their structural design typically includes key components such as the valve body, valve cover, plunger, cage, rotating seal, and throttle orifice. They can effectively cope with harsh working conditions such as high pressure, high temperature, and high corrosion, and are therefore widely used in oil and gas drilling and production operations.

[0003] The existing straight-through cage-type throttle valves have a relatively complex structure, and the disassembly and assembly of the plunger and cage are difficult. This results in low production efficiency during valve production and assembly, and it is also troublesome to replace the internal components of the valve. Therefore, a straight-through cage-type throttle valve is proposed to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a straight-through cage-type throttle valve to solve the problem that the existing straight-through cage-type throttle valves have a relatively complex structure and the disassembly and assembly of the plunger and cage are relatively difficult.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A straight-through cage-type throttle valve includes a valve body assembly, a lower valve cover assembly, an upper valve cover assembly, a cage assembly, a plunger assembly, and a drive assembly. The valve body assembly includes a valve body body. Pipe connection flanges are fixedly connected to the left and right openings of the valve body body. A first valve cover connection flange is fixedly connected to the lower opening of the valve body body, and a second valve cover connection flange is fixedly connected to the upper opening of the valve body body. Two symmetrically distributed first limiting protrusions are provided on the inner side of the valve body body. A lower valve cover assembly is provided on the lower side of the valve body assembly. The lower valve cover assembly includes a lower valve cover body located directly below the valve body body. A lower valve cover connection flange, detachably connected to the first valve cover connection flange, is fixedly connected to the outer side of the lower valve cover body. An upper valve cover assembly is provided on the upper side of the valve body assembly. The upper valve cover assembly includes an upper valve cover body located directly above the valve body. An upper valve cover connecting flange, detachably connected to a second valve cover connecting flange, is fixedly connected to the outer side of the upper valve cover body. A rotating seal is installed in the middle of the upper valve cover body. Inside the valve body assembly is a cage sleeve assembly, which includes a cage sleeve body that fits tightly against the inner wall of the valve body. A set of flow-limiting ports is provided on the lower left and upper right sides of the cage sleeve body. Two second limiting protrusions, symmetrically distributed front and rear, are provided on the inner side of the cage sleeve body. Inside the cage sleeve assembly is a plunger assembly, which includes a valve stem located at the center of the cage sleeve assembly. A drive shaft is fixedly connected to the upper side of the valve stem. Two plunger bodies, slidably connected to the second limiting protrusions, are threadedly connected to the outer side of the valve stem.

[0007] Preferably, the upper side of the plunger assembly is provided with a drive assembly, the drive assembly including a drive motor fixedly connected to the upper side of the upper valve cover body, and the main shaft of the drive motor is fixedly connected with a transmission sleeve.

[0008] Preferably, the first limiting protrusion is inserted into the front and rear side grooves of the cage body, the lower end of the cage body is tightly fitted with the lower valve cover body, and the upper end of the cage body is tightly fitted with the upper valve cover body.

[0009] Preferably, the flow-limiting port on the lower left side of the cage body is located directly to the right of the left opening of the valve body, and the flow-limiting port on the upper right side of the cage body is located directly to the left of the right opening of the valve body.

[0010] Preferably, the upper end of the valve stem is tightly fitted with the rotating seal, the lower end of the valve stem is rotatably connected to the lower valve cover body, and the outer side of the valve stem is provided with two sets of symmetrical threaded protrusions.

[0011] Preferably, the drive shaft is inserted into the interior of the drive sleeve, and the two plunger bodies are symmetrically distributed vertically, with the outer sides of the plunger bodies tightly fitted to the inner sides of the cage body.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, the device, through the valve body, first limiting protrusion, cage body, second limiting protrusion, transmission shaft, and transmission sleeve, can limit the cage body by the first limiting protrusion inside the valve body in conjunction with the lower valve cover body and the upper valve cover body, limit the valve stem by the lower valve cover body and the upper valve cover body, limit the plunger body by the second limiting protrusion inside the cage body, and drive the device through the transmission sleeve in conjunction with the transmission shaft. This allows the device to be quickly assembled and disassembled, resulting in high production efficiency during production and assembly, and convenient operation when replacing its internal components. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0016] Figure 3 This is a cross-sectional view of the valve body assembly structure of this utility model;

[0017] Figure 4 This is a cross-sectional view of the cage assembly structure of this utility model;

[0018] Figure 5 This is a cross-sectional view of the plunger assembly structure of this utility model;

[0019] Figure 6 This is a cross-sectional view of the drive component structure of this utility model.

[0020] In the diagram: 1. Valve body assembly; 11. Valve body; 12. Pipe connection flange; 13. First valve cover connection flange; 14. Second valve cover connection flange; 15. First limiting protrusion; 2. Lower valve cover assembly; 21. Lower valve cover body; 22. Lower valve cover connection flange; 3. Upper valve cover assembly; 31. Upper valve cover body; 32. Upper valve cover connection flange; 33. Rotary seal; 4. Cage assembly; 41. Cage body; 42. Flow limiting port; 43. Second limiting protrusion; 5. Plunger assembly; 51. Valve stem; 52. Drive shaft; 53. Plunger body; 6. Drive assembly; 61. Drive motor; 62. Transmission sleeve. Detailed Implementation

[0021] 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.

[0022] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0023] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0024] Please see Figure 1-6 This utility model provides a technical solution:

[0025] A straight-through cage-type throttle valve includes a valve body assembly 1, a lower valve cover assembly 2, an upper valve cover assembly 3, a cage assembly 4, a plunger assembly 5, and a drive assembly 6. The valve body assembly 1 includes a valve body 11. Pipe connection flanges 12 are fixedly connected to the openings on both the left and right sides of the valve body 11. A first valve cover connection flange 13 is fixedly connected to the lower opening of the valve body 11, and a second valve cover connection flange 14 is fixedly connected to the upper opening of the valve body 11. Two symmetrically distributed first limiting protrusions 15 are provided on the inner side of the valve body 11. A lower valve cover assembly 2 is provided on the lower side of the valve body assembly 1. The lower valve cover assembly 2 includes a lower valve cover body 21 located directly below the valve body 11. A lower valve cover connection flange 22, detachably connected to the first valve cover connection flange 13, is fixedly connected to the outer side of the lower valve cover body 21. An upper valve cover assembly 3 is provided on the upper side of the valve body assembly 1. The cover assembly 3 includes an upper valve cover body 31 located directly above the valve body 11. An upper valve cover connecting flange 32, which is fixedly connected to the outer side of the upper valve cover body 31 and detachably connected to the second valve cover connecting flange 14, is fixedly connected to the outer side of the upper valve cover body 31. A rotating seal 33 is installed in the middle position of the upper valve cover body 31. The valve body assembly 1 has a cage sleeve assembly 4 inside. The cage sleeve assembly 4 includes a cage sleeve body 41 that fits tightly against the inner wall of the valve body 11. A set of flow limiting ports 42 are respectively provided on the lower left and upper right sides of the cage sleeve body 41. Two second limiting protrusions 43 are symmetrically distributed front and rear on the inner side of the cage sleeve body 41. The cage sleeve assembly 4 has a plunger assembly 5 inside. The plunger assembly 5 includes a valve stem 51 located at the center of the cage sleeve assembly 4. A drive shaft 52 is fixedly connected to the upper side of the valve stem 51. Two plunger bodies 53 that are slidably connected to the second limiting protrusions 43 are threadedly connected to the outer side of the valve stem 51.

[0026] A drive assembly 6 is provided on the upper side of the plunger assembly 5. The drive assembly 6 includes a drive motor 61 fixedly connected to the upper side of the upper valve cover body 31. The main shaft of the drive motor 61 is fixedly connected to a transmission sleeve 62. The drive motor 61 can drive the transmission sleeve 62 to rotate, thereby causing the transmission shaft 52 to drive the valve stem 51 to rotate. The first limiting protrusion 15 is inserted into the front and rear side grooves of the cage body 41 respectively. The lower end of the cage body 41 is tightly fitted with the lower valve cover body 21, and the upper end of the cage body 41 is tightly fitted with the upper valve cover body 31. The first limiting protrusion 15 inside the valve body 11, in conjunction with the lower valve cover body 21 and the upper valve cover body 31, can limit the cage body 41. The flow limiting port 42 on the lower left side of the cage body 41 is located directly to the right of the left opening of the valve body 11, and the flow limiting port 4 on the upper right side of the cage body 41 is located on the right side of the left opening of the valve body 11. Located on the right side of the valve body 11, directly to the left of the opening, the plunger body 53, which can move up and down, can partially or completely block the flow-limiting port 42 on the cage body 41, thereby achieving the purpose of flow regulation. The upper end of the valve stem 51 is tightly fitted with the rotating seal 33, and the lower end of the valve stem 51 is rotatably connected to the lower valve cover body 21. The outer side of the valve stem 51 is provided with two sets of symmetrical threaded protrusions. The rotatable valve stem 51 can make the two plunger bodies 53, which are limited by the second limiting protrusion 43, move closer or further apart. The transmission shaft 52 is inserted into the inside of the transmission sleeve 62. The two plunger bodies 53 are symmetrically distributed vertically. The outer side of the plunger bodies 53 is tightly fitted with the inner side of the cage body 41. The two symmetrically distributed plunger bodies 53 can limit the valve stem 51, making the valve stem 51 more stable when rotating.

[0027] Workflow: Before use, the valve body 11 is installed in the pipeline network via the pipe connection flange 12. The transmission sleeve 62 of this device is connected to an external power supply and controller. The transmission sleeve 62 can be controlled by the controller. All of the above are existing technologies. When using this device, the operator can rotate the drive motor 61 through the controller. The drive motor 61 can drive the transmission sleeve 62 to rotate, which in turn causes the transmission shaft 52 to drive the valve stem 51 to rotate. This allows the two plunger bodies 53, which are limited by the second limiting protrusion 43, to move closer or further apart. The cage body 41 can be moved up and down by the plunger bodies 53. By partially or completely blocking the flow-limiting port 42, flow regulation can be achieved. Two symmetrically distributed plunger bodies 53 can limit the valve stem 51, making it more stable during rotation and improving its impact resistance, thus enhancing its stability under the impact of the flowing medium. Furthermore, the combination of two plunger bodies 53 and two sets of flow-limiting ports 42 for throttling allows for a longer service life and maintains high-precision throttling when conveying corrosive or particulate media. When internal components need replacement, personnel can... Remove the upper valve cover connecting flange 32 from the second valve cover connecting flange 14, and remove the upper valve cover body 31. At this time, the drive shaft 52 and drive sleeve 62 are disengaged, and the rotating seal 33 and valve stem 51 are separated. The operator can grab the drive shaft 52 and pull it upward to pull the valve stem 51 and plunger body 53 out from the inside of the cage body 41. Then, remove the lower valve cover connecting flange 22 from the first valve cover connecting flange 13, and remove the lower valve cover body 21. At this time, the cage body 41 inside the valve body 11 and the first limiting protrusion 15 can be dislodged from the valve body 11 by its own weight. The internal components of the device can be replaced. The device can limit the cage body 41 by the first limiting protrusion 15 inside the valve body 11 in conjunction with the lower valve cover body 21 and the upper valve cover body 31, limit the valve stem 51 by the lower valve cover body 21 and the upper valve cover body 31, limit the plunger body 53 by the second limiting protrusion 43 inside the cage body 41, and drive the device by the transmission sleeve 62 in conjunction with the transmission shaft 52. This allows the device to be quickly disassembled and assembled. The device has high production efficiency during production assembly and is easy to operate when replacing its internal components.

[0028] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Standard parts used in this invention can all be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are already mature technologies. The machinery, parts, and equipment all use conventional models from the prior art, and the circuit connections also employ conventional connection methods from the prior art, which will not be detailed here.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A straight-through cage-type throttle valve, comprising a valve body assembly (1), a lower valve cover assembly (2), an upper valve cover assembly (3), a cage assembly (4), a plunger assembly (5), and a drive assembly (6), characterized in that: The valve body assembly (1) includes a valve body (11). Pipe connection flanges (12) are fixedly connected to the left and right openings of the valve body (11). A first valve cover connection flange (13) is fixedly connected to the lower opening of the valve body (11). A second valve cover connection flange (14) is fixedly connected to the upper opening of the valve body (11). Two first limiting protrusions (15) are symmetrically distributed front and rear on the inner side of the valve body (11). A lower valve cover assembly (2) is provided on the lower side of the valve body assembly (1). The lower valve cover assembly (2) includes a lower valve cover body (21) located directly below the valve body (11). A lower valve cover connection flange (22) is fixedly connected to the outer side of the lower valve cover body (21) and detachably connected to the first valve cover connection flange (13). An upper valve cover assembly (3) is provided on the upper side of the valve body assembly (1). The upper valve cover assembly (3) includes an upper valve cover body (31) located directly above the valve body (11). The upper valve cover body (31) is fixedly connected to the outer side of the upper valve cover body (31) and is detachably connected to the second valve cover connecting flange (14). A rotating seal (33) is installed in the middle position of the upper valve cover body (31). The valve body assembly (1) is provided with a cage assembly (4). The cage assembly (4) includes a cage body (41) that fits tightly against the inner wall of the valve body body (11). A set of flow limiting ports (42) are provided on the lower left and upper right sides of the cage body (41). Two second limiting protrusions (43) are symmetrically distributed on the inner side of the cage body (41). A plunger assembly (5) is provided on the inner side of the cage assembly (4). The plunger assembly (5) includes a valve stem (51) located at the center of the cage assembly (4). A drive shaft (52) is fixedly connected to the upper side of the valve stem (51). Two plunger bodies (53) that are slidably connected to the second limiting protrusions (43) are threadedly connected to the outer side of the valve stem (51).

2. The straight-through cage-type throttle valve according to claim 1, characterized in that: The upper side of the plunger assembly (5) is provided with a drive assembly (6), the drive assembly (6) includes a drive motor (61) fixedly connected to the upper side of the upper valve cover body (31), and the main shaft of the drive motor (61) is fixedly connected with a transmission sleeve (62).

3. A straight-through cage-type throttle valve according to claim 1, characterized in that: The first limiting protrusion (15) is inserted into the front and rear side grooves of the cage body (41). The lower end of the cage body (41) is in close contact with the lower valve cover body (21), and the upper end of the cage body (41) is in close contact with the upper valve cover body (31).

4. A straight-through cage-type throttle valve according to claim 1, characterized in that: The flow-limiting port (42) on the lower left side of the cage body (41) is located to the right of the left opening of the valve body (11), and the flow-limiting port (42) on the upper right side of the cage body (41) is located to the left of the right opening of the valve body (11).

5. A straight-through cage-type throttle valve according to claim 1, characterized in that: The upper end of the valve stem (51) is tightly fitted with the rotating seal (33), and the lower end of the valve stem (51) is rotatably connected to the lower valve cover body (21). The outer side of the valve stem (51) is provided with two sets of symmetrical threaded protrusions.

6. A straight-through cage-type throttle valve according to claim 1, characterized in that: The drive shaft (52) is inserted into the inside of the drive sleeve (62), and the two plunger bodies (53) are symmetrically distributed vertically. The outer sides of the plunger bodies (53) are closely fitted with the inner side of the cage body (41).

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