High-performance throttle valve

Abstract

The utility model discloses a high-performance throttle valve, which relates to the technical field of throttle valves, and comprises a valve body, a valve cover, a nut body, a sealing ring, a cage bushing, a cage body, a plunger head, a plunger body and a connecting rod, and the top of the valve body is provided with the valve cover. According to the high-performance throttling valve, firstly, the cage sleeve body and the valve body are fixed, secondly, the plunger head and the plunger body are hinged together through the steel ball, the hand wheel is rotated, so that the hand wheel can rotate the connecting rod through the valve rod nut, the plunger head is moved after the hand wheel is rotated, and the same-flow area of fluid can be changed; meanwhile, the size of the fluid hole diameter can be calculated through the moving stroke of the connecting rod, the upper end face of the protective cover is aligned with a data scale line on the opening indicator, finally, the needed position of the plunger head can be adjusted after the hand wheel is rotated according to the flow requirement and the wellhead backpressure requirement, and the butterfly screw is locked; therefore, the throttle valve can reach the required working state.

Description

Technical Field

[0001] The utility model relates to the technical field of throttle valves, and particularly relates to a high-performance throttle valve. Background Technique

[0002] A throttle valve is a kind of valve that controls the fluid flow by changing the throttle section or throttle length. It is usually used in a quantitative pump hydraulic system and can be combined with a relief valve to form various throttle speed control systems, such as an inlet oil circuit throttle speed control system, a return oil circuit throttle speed control system, and a bypass throttle speed control system. The throttle valve is similar to a globe valve in structure, but the shape of its opening and closing member is different, and most of them adopt a conical streamline shape to change the channel cross-sectional area to achieve the purpose of regulating the flow rate and pressure.

[0003] However, when most throttle valves are in use, due to the relatively fixed size of the throttle holes inside, the fluid is likely to have a relatively fixed rate during transportation, which makes it difficult to adjust the fluid flow rate and pressure when the throttle valve is in use, and it is not easy to adjust the fluid flow area, so that it is inconvenient for the throttle valve to transport the fluid. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-performance throttle valve to solve the problem that the throttle valve is not easy to adjust the fluid flow rate during use as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a high-performance throttle valve, including a valve body, a valve cover, a nut body, a sealing ring, a cage bushing, a cage body, a plunger head, a plunger body, and a connecting rod. The valve cover is arranged at the top of the valve body, the nut body is connected between the valve cover and the valve body, a sealing ring is arranged at one end of the valve cover and the valve body, a cage bushing is arranged inside the valve body, a cage body is arranged on one side of the cage bushing, a plunger head is arranged at the top of the cage body inside the valve body, a plunger body is arranged at the top of the plunger head, and a connecting rod is arranged at the top of the plunger body.

[0006] Preferably, a valve stem nut is connected to the surface of the connecting rod, a protective cover is installed on the top of the valve stem nut, and an opening indicator is arranged at the top of the connecting rod.

[0007] Preferably, a cylindrical pin is connected to the bottom of the connecting rod, and a compression nut is arranged at the top of the cylindrical pin.

[0008] Preferably, a handwheel is installed on the surface of the valve stem nut, and a butterfly screw is connected to one side of the valve stem nut close to the handwheel.

[0009] Preferably, a positioning pin is connected between the cage bushing and the cage body, a steel ball is connected between the plunger head and the plunger body, and a plug screw is sealed on the surface of the steel ball.

[0010] Preferably, a first throttle hole is formed inside the cage bushing, a second throttle hole is formed on one side of the cage bushing close to the first throttle hole, and a third throttle hole is formed on one side of the second throttle hole away from the first throttle hole.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: for this high-performance throttle valve, first, the cage body is fixed to the valve body through a positioning pin, so that the hole positions of the cage bushing and the cage body can be aligned. Secondly, the plunger head and the plunger body are hinged together through a steel ball. By rotating the handwheel, the handwheel can rotate the connecting rod through the connected valve stem nut, so that after rotating the handwheel, the plunger head can be moved, so that the fluid flow area between the cage bushing and the cage body can be changed. At the same time, the moving stroke of the connecting rod can calculate the fluid aperture size through the opening indicator. Then, the upper end face of the shield is aligned with the data scale line on the opening indicator. Finally, the required position of the plunger head can be adjusted by rotating the handwheel according to the flow rate requirement and the wellhead back pressure requirement, and the butterfly screw can be locked, so that the valve stem nut can be locked, and the throttle valve can reach the required working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the front view sectional structure schematic diagram of the valve body of the present utility model;

[0013] Figure 2 is the front view sectional structure schematic diagram of the cage body of the present utility model;

[0014] Figure 3 is the front view sectional structure schematic diagram of the cage bushing of the present utility model;

[0015] Figure 4 is the unfolded structure schematic diagram of the cage bushing of the present utility model.

[0016] In the figure: 1, valve body; 2, valve cover; 3, nut body; 4, sealing ring; 5, cage bushing; 6, cage body; 7, plunger head; 8, plunger body; 9, connecting rod; 10, valve stem nut; 11, shield; 12, opening indicator; 13, cylindrical pin; 14, compression nut; 15, handwheel; 16, butterfly screw; 17, positioning pin; 18, steel ball; 19, plug screw; 20, first throttle hole; 21, second throttle hole; 22, third throttle hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 ,the present utility model provides a technical solution: a high-performance throttle valve, which includes a valve body 1, a valve cover 2, a nut body 3, a sealing ring 4, a cage bushing 5, a cage body 6, a plunger head 7, a plunger body 8 and a connecting rod 9. A valve cover 2 is arranged at the top of the valve body 1, a nut body 3 is connected between the valve cover 2 and the valve body 1, a sealing ring 4 is arranged at one end of the valve cover 2 and the valve body 1, a cage bushing 5 is arranged inside the valve body 1, a cage body 6 is arranged on one side of the cage bushing 5, a plunger head 7 is arranged at the top of the cage body 6 inside the valve body 1, a plunger body 8 is arranged at the top of the plunger head 7, a connecting rod 9 is arranged at the top of the plunger body 8, a valve rod nut 10 is connected to the surface of the connecting rod 9, a shield 11 is installed at the top of the valve rod nut 10, an opening indicator 12 is arranged at the top of the connecting rod 9, a cylindrical pin 13 is connected to the bottom of the connecting rod 9, a compression nut 14 is arranged at the top of the cylindrical pin 13, a handwheel 15 is installed on the surface of the valve rod nut 10, a butterfly screw 16 is connected to one side of the valve rod nut 10 close to the handwheel 15, a positioning pin 17 is connected between the cage bushing 5 and the cage body 6, a steel ball 18 is connected between the plunger head 7 and the plunger body 8, a plug 19 is sealed on the surface of the steel ball 18, a first throttle hole 20 is opened inside the cage bushing 5, a second throttle hole 21 is opened on one side of the cage bushing 5 close to the first throttle hole 20, and a third throttle hole 22 is opened on one side of the second throttle hole 21 away from the first throttle hole 20.

[0019] During specific implementation,

[0020] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4It can be seen that first, the cage body 6 is fixed to the valve body 1 through the positioning pin 17, so that the cage bushing 5 can be aligned with the hole position of the cage body 6. Secondly, the plunger head 7 and the plunger body 8 are hinged together by the steel ball 18. By rotating the handwheel 15, the handwheel 15 can rotate the connecting rod 9 through the connected valve stem nut 10, so that after rotating the handwheel 15, the plunger head 7 can be moved, so as to change the fluid flow area between the cage bushing 5 and the cage body 6. At the same time, the stroke of the movement of the connecting rod 9 can calculate the fluid aperture size through the opening indicator 12. Then, the upper end face of the shield 11 is aligned with the data scale line on the opening indicator 12. Finally, the required position of the plunger head 7 can be adjusted by rotating the handwheel 15 according to the flow rate requirement and the wellhead back pressure requirement, and the wing screw 16 is locked, so that the valve stem nut 10 can be locked, so that the throttle valve can reach the required working state;

[0021] At the same time, the third throttle holes 22 are evenly distributed at equal intervals on the sine trigonometric function curve after being unfolded along the center line inside the cage bushing 5. Secondly, the second throttle holes 21 are distributed at the troughs of the sine trigonometric function curve. Finally, the first throttle holes 20 are respectively distributed on the left and right sides of the second throttle holes 21 and are evenly distributed on the cylindrical unfolded surface.

[0022] To sum up, the throttle valve is a kind of valve that controls the fluid flow rate by changing the throttle section or the throttle length. It is usually used in the quantitative pump hydraulic system. Cooperating with the relief valve, it can form a variety of throttle speed control systems. The cage body 6 is fixed to the valve body 1 through the positioning pin 17, so that the cage bushing 5 can be aligned with the hole position of the cage body 6. Secondly, the plunger head 7 and the plunger body 8 are hinged together by the steel ball 18. By rotating the handwheel 15, the handwheel 15 can rotate the connecting rod 9 through the connected valve stem nut 10, so that after rotating the handwheel 15, the plunger head 7 can be moved, so as to change the fluid flow area between the cage bushing 5 and the cage body 6. At the same time, the stroke of the movement of the connecting rod 9 can calculate the fluid aperture size through the opening indicator 12. Then, the upper end face of the shield 11 is aligned with the data scale line on the opening indicator 12. Finally, the required position of the plunger head 7 can be adjusted by rotating the handwheel 15 according to the flow rate requirement and the wellhead back pressure requirement, and the wing screw 16 is locked, so that the valve stem nut 10 can be locked, so that the throttle valve can reach the required working state. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0023] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high-performance throttle valve, comprising a valve body (1), a valve cover (2), a nut body (3), a sealing ring (4), a cage bushing (5), a cage body (6), a plunger head (7), a plunger body (8) and a connecting rod (9), characterized in that: A valve cover (2) is arranged on the top of the valve body (1), a nut body (3) is connected between the valve cover (2) and the valve body (1), a sealing ring (4) is arranged between the valve cover (2) and one end of the valve body (1), a cage bushing (5) is arranged inside the valve body (1), a cage body (6) is arranged on one side of the cage bushing (5), a plunger head (7) is arranged near the top of the cage body (6) inside the valve body (1), a plunger body (8) is arranged at the top of the plunger head (7), a connecting rod (9) is arranged on the top of the plunger body (8), and a hand wheel (15) is installed on the surface of the valve stem nut (10) A butterfly screw (16) is connected to the side of the valve stem nut (10) close to the hand wheel (15), a positioning pin (17) is connected between the cage bushing (5) and the cage body (6), a steel ball (18) is connected between the plunger head (7) and the plunger body (8), a screw plug (19) is sealed on the surface of the steel ball (18), a first throttling hole (20) is opened inside the cage bushing (5), a second throttling hole (21) is opened on the side of the cage bushing (5) close to the first throttling hole (20), and a third throttling hole (22) is opened on the side of the second throttling hole (21) away from the first throttling hole (20).

2. A high performance throttle valve according to claim 1, characterized in that: The surface of the connecting rod (9) is connected to a valve stem nut (10), a protective cover (11) is installed on the top of the valve stem nut (10), and an opening indicator (12) is arranged on the top of the connecting rod (9).

3. A high performance throttle valve according to claim 2, characterized in that: The bottom of the connecting rod (9) is connected with a cylindrical pin (13), and the top of the cylindrical pin (13) is provided with a clamping nut (14).

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