Wear-resistant high-pressure angle valve

Abstract

The invention relates to a wear-resistant high-pressure angle valve and belongs to the technical field of fluid valves, the wear-resistant high-pressure angle valve comprises a valve body, a valve cover, a valve seat, a valve rod and a valve element, a valve hole penetrating through the two ends of the valve body is formed in the valve body, and an inlet hole communicated with the valve hole is formed in the side wall of the valve body; the valve cover is fixed at an opening end of the valve body; a sliding hole communicated with the valve hole is formed in the middle of the valve cover; the valve seat is fixed at the other opening end of the valve body; an outlet hole communicated with the valve hole is formed in the middle of the valve seat; one end of the valve rod penetrates through the sliding hole in a sliding mode and slides in the valve hole. One end of the valve element is fixed to the end, stretching into the valve hole, of the valve rod and stretches into the outlet hole in a sliding mode, and the other end, stretching into the outlet hole, of the valve element is of a spherical structure. The other end, extending into the outlet hole, of the valve element is designed to be of the spherical structure, transition can be achieved through a smooth flow channel of the structure, rapid changes of fluid flowing are reduced, the pressure gradient is relieved, and the abrasion resistance of the high-pressure angle valve is improved.

Description

Technical Field

[0001] The invention relates to the technical field of fluid valves, and in particular to a wear-resistant high-pressure angle valve. Background Art

[0002] High-pressure angle valve, also known as angle stop valve, is a plumbing hardware accessory installed on pipelines to control the opening and closing of media (cold and hot water, heating). As a key control component, it is widely used in the industrial field.

[0003] The traditional high-pressure angle valve is mainly composed of a valve body, a valve core, a valve seat, a valve stem, a packing and an actuator. The structural design may vary depending on the specific application and requirements. The typical angle valve body is L-shaped. This design allows the fluid to turn at a 90-degree angle, thereby realizing the fluid turning and control functions in a limited space. The throttling area formed between the valve core and the valve seat of the high-pressure angle valve is a key part for controlling fluid flow and pressure. However, under conditions of high pressure and high flow rate, the throttling area is prone to wear problems. This is mainly due to the high-speed scouring and cavitation generated by the high-pressure fluid when passing through the throttling area, which causes the material on the surface of the valve core and the valve seat to be continuously eroded and worn, resulting in a decrease in the sealing performance of the valve, an increase in the risk of leakage, and an impact on the stability and safety of the system. This causes an increase in the local resistance loss of the angle valve, pressure fluctuations and vibrations, and reduces the stability and efficiency of the valve.

[0004] like Figure 3 The valve core structure of the angle valve is shown in the figure. The valve head part is composed of a truncated cone and a cone. The bottom circle radius of the valve head is 25mm and the height is 30mm. The wall surface at the connection between the truncated cone and the cone is turned at a certain angle, and the throttling area formed by the valve head and the valve seat forms a flow channel that suddenly contracts and then expands. After the throttling area suddenly contracts, the velocity of the fluid will suddenly increase, and the pressure drop will also increase, resulting in the formation of vortex or turbulence in the contraction area. When the fluid passes through the expansion channel, the flow velocity will decrease sharply and the pressure drop will also decrease. Due to the rapid changes in fluid velocity and pressure during contraction and expansion, the instability of the flow field increases. The larger pressure increases the generation and collapse of bubbles, causing serious local cavitation damage. Pressure fluctuations will also increase the vibration and noise inside the valve. In addition, the sudden contraction and expansion channel of the throttling area will cause impact on the valve core and valve seat, increasing the wear of the valve core and valve seat surface. This impact causes local wear and damage to the valve core and valve seat surface, reducing the sealing performance and service life of the valve. This ultimately results in severe local resistance loss of the fluid in the throttling area, a decrease in the flow capacity of the valve, and a decrease in control accuracy.

[0005] Therefore, how to design a high-pressure angle valve with a simple structure, low manufacturing cost and wear resistance is a problem that technical personnel in this field need to solve urgently. Summary of the invention

[0006] The invention provides a wear-resistant high-pressure angle valve, which solves the technical problem that the existing high-pressure angle valve is easily damaged.

[0007] The technical solution of the present invention to solve the above technical problems is as follows: a wear-resistant high-pressure angle valve, comprising: a valve body, a valve cover, a valve seat, a valve stem and a valve core, the interior of the valve body is provided with a valve hole running through both ends thereof and a side wall thereof is provided with an inlet hole communicating with the valve hole; the valve cover is fixed to an open end of the valve body and a sliding hole communicating with the valve hole is provided in the middle thereof; the valve seat is fixed to the other open end of the valve body and an outlet hole communicating with the valve hole is provided in the middle thereof; one end of the valve stem slides through the sliding hole and slides in the valve hole; one end of the valve core is fixed to the insertion end of the valve stem extending into the valve hole and slides into the outlet hole, and the other end of the valve core extending into the outlet hole is a spherical structure.

[0008] The beneficial effects of the present invention are:

[0009] 1. The other end of the valve core extending into the outlet hole is designed as a spherical structure, which can smooth the flow channel transition, reduce the rapid change of fluid flow, and alleviate the pressure gradient;

[0010] 2. The spherical structure gradually accelerates or decelerates along a smooth path, avoiding sudden pressure changes and reducing the generation of turbulence and eddies. The reduction of turbulence and eddies directly leads to the alleviation of pressure gradient and the reduction of local fluid resistance, thereby reducing fluid energy loss and improving the flow capacity of the valve;

[0011] 3. The spherical structure can avoid sudden changes in the cross-sectional area of ​​the flow channel, reduce the sharp change in the flow direction of the fluid, make the velocity change of the fluid more uniform, and avoid pressure fluctuations caused by sudden changes in velocity;

[0012] 4. In traditional valve design, sharp edges and abrupt shapes will lead to pressure concentration in fluid flow, while the spherical structure can alleviate this pressure concentration phenomenon and avoid local damage and wear caused by pressure difference;

[0013] 5. The spherical structure design reduces the formation of low-pressure areas and pressure fluctuations, reduces the generation and rupture of bubbles, and reduces the harm of cavitation wear.

[0014] Based on the above technical solution, the present invention can also be improved as follows.

[0015] Furthermore, the valve core includes a first cylinder, a conical body, a second cylinder and a hemisphere in sequence from the direction close to the valve stem to the direction away from the valve stem, one end of the first cylinder is fixed to the end of the valve stem extending into the valve hole; the end of the conical body close to the first cylinder is a large-area end and its large-area end is fixed to the other end of the first cylinder; one end of the second cylinder is fixed to the small-area end of the conical body; the planar end of the hemisphere is fixed to the other end of the second cylinder; the second cylinder and the hemisphere slide into the outlet hole.

[0016] The above-mentioned further beneficial effects are: in the traditional high-pressure angle valve, the valve core adopts the connection form of a cone and a frustum, which will increase the local resistance loss in the throttling area, enhance the instability of the flow field, and cause serious wear; while the spherical structure of the present invention can make the fluid flow through the throttling area. Balanced transition, improve pressure distribution, reduce the generation of turbulence and eddy currents, thereby reducing energy loss, reducing valve wear, and improving fluid capacity and efficiency.

[0017] Furthermore, the longitudinal section of the hemisphere is an ellipse, and the spherical line control equation of the hemisphere is: Wherein X is the longitudinal length of the hemisphere, Y is the transverse length of the hemisphere, a is the longitudinal radius of the hemisphere, and b is the transverse radius of the hemisphere.

[0018] Further, 0≤x≤a, -b≤y≤b, 25≤a≤30, 20≤b≤25.

[0019] Furthermore, the diameter of the outlet hole increases gradually from the direction close to the valve body to the direction away from the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the internal structure of a wear-resistant high-pressure angle valve of the present invention;

[0021] Figure 2 It is a longitudinal cross-sectional schematic diagram of a valve core in a wear-resistant high-pressure angle valve of the present invention;

[0022] Figure 3 It is a schematic diagram of the longitudinal section of the valve core in a traditional high-pressure angle valve.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. valve body, 11. valve hole, 12. inlet hole, 2. valve cover, 21. sliding hole, 3. valve seat, 31. outlet hole, 4. valve stem, 5. valve core, 51. first cylinder, 52. truncated cone, 53. second cylinder, 54. hemispherical body. DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] like Figure 1 As shown, a wear-resistant high-pressure angle valve comprises: a valve body 1, a valve cover 2, a valve seat 3, a valve stem 4 and a valve core 5, wherein the interior of the valve body 1 is provided with a valve hole 11 penetrating through both ends thereof and a side wall thereof is provided with an inlet hole 12 communicating with the valve hole 11; the valve cover 2 is fixed to an open end of the valve body 1 and a sliding hole 21 communicating with the valve hole 11 is provided in the middle thereof; the valve seat 3 is fixed to the other open end of the valve body 1 and an outlet hole 31 communicating with the valve hole 11 is provided in the middle thereof; one end of the valve stem 4 slides through the sliding hole 21 and slides in the valve hole 11; one end of the valve core 5 is fixed to the extending end of the valve stem 4 extending into the valve hole 11 and slides into the outlet hole 31, and the other end of the valve core 5 is a spherical structure.

[0027] like Figure 2 As shown, in some specific embodiments, the valve core 5 may include a first cylinder 51, a cone 52, a second cylinder 53 and a hemispherical body 54 in sequence from the direction close to the valve stem 4 to the direction away from the valve stem 4. One end of the first cylinder 51 is fixed to the end of the valve stem 4 extending into the valve hole 11; the end of the cone 52 close to the first cylinder 51 is a large-area end and its large-area end is fixed to the other end of the first cylinder 51; one end of the second cylinder 53 is fixed to the small-area end of the cone 52; the plane end of the hemispherical body 54 is fixed to the other end of the second cylinder 53; the second cylinder 53 and the hemispherical body 54 slide into the outlet hole 31.

[0028] In some specific embodiments, the longitudinal section of the hemisphere 54 is elliptical, and the spherical line control equation of the hemisphere 54 is, Wherein X is the longitudinal length of the hemisphere 54 , Y is the lateral length of the hemisphere 54 , a is the longitudinal radius of the hemisphere 54 , and b is the lateral radius of the hemisphere 54 .

[0029] Specifically, 0≤x≤a, -b≤y≤b, 25≤a≤30, 20≤b≤25.

[0030] like Figure 1 As shown, in some specific embodiments, the diameter of the outlet hole 31 increases gradually from the direction close to the valve body 1 to the direction away from the valve body 1 .

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wear-resistant high-pressure angle valve, characterized in that: include: A valve body (1), a valve cover (2), a valve seat (3), a valve stem (4) and a valve core (5); the valve body (1) is provided with a valve hole (11) penetrating through both ends thereof, and a side wall thereof is provided with an inlet hole (12) communicating with the valve hole (11); the valve cover (2) is fixed to an open end of the valve body (1) and a sliding hole (21) communicating with the valve hole (11) is provided in the middle thereof; the valve seat (3) is fixed to the other open end of the valve body (1) and an outlet hole (31) communicating with the valve hole (11) is provided in the middle thereof; one end of the valve stem (4) slides through the sliding hole (21) and slides in the valve hole (11); one end of the valve core (5) is fixed to the insertion end of the valve stem (4) extending into the valve hole (11) and slides into the outlet hole (31); the other end of the valve core (5) is a spherical structure.

2. A wear-resistant high-pressure angle valve according to claim 1, characterized in that: The valve core (5) comprises a first column (51), a truncated cone (52), a second column (53) and a hemispherical body (54) in sequence from the direction close to the valve stem (4) to the direction away from the valve stem (4); one end of the first column (51) is fixed to the end of the valve stem (4) extending into the valve hole (11); the end of the truncated cone (52) close to the first column (51) is a large-area end and its large-area end is fixed to the other end of the first column (51); one end of the second column (53) is fixed to the small-area end of the truncated cone (52); the plane end of the hemispherical body (54) is fixed to the other end of the second column (53); the second column (53) and the hemispherical body (54) slide and extend into the outlet hole (31).

3. A wear-resistant high-pressure angle valve according to claim 2, characterized in that: The longitudinal section of the hemisphere (54) is elliptical, and the spherical line control equation of the hemisphere (54) is: Wherein X is the longitudinal length of the hemisphere (54), Y is the transverse length of the hemisphere (54), a is the longitudinal radius of the hemisphere (54), and b is the transverse radius of the hemisphere (54).

4. A wear-resistant high-pressure angle valve according to claim 3, characterized in that: 0≤x≤a, -b≤y≤b, 25≤a≤30, 20≤b≤25.

5. The wear-resistant high-pressure angle valve according to claim 1, characterized in that: The diameter of the outlet hole (31) increases gradually from a direction close to the valve body (1) to a direction away from the valve body (1).

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