阅读说明：本技术 一种阀塞及调节阀 (Valve plug and governing valve ) 是由 沈汝男 赵广坡 冯浩靓 贠舒康 李园园 于 2020-12-17 设计创作，主要内容包括：本发明公开了一种阀塞及调节阀,通过将阀塞设置为相连的第一导向部和第二导向部,第二导向部为若干开有通孔的降压环,降压环依次直径减小并套设。降压环上设有若干通孔,且相邻的降压环上的通孔错位分布。当安装在阀体内并打开时,第一导向部以及其上的降压环向上运动,介质先进入最外层的降压环,通过该降压环上的通孔后流入与下一降压环形成的介质空间,工作原理是介质通过通孔节流,然后经过降压环内部的流动相互碰撞和流向的改变降压。压力降低之后,对阀芯和阀体的冲刷会小很多,保证了阀门密封性能和使用寿命。同时,可根据需求设置多层降压环提高降压能力,以达到所需降压要求,解决了现有调压阀套筒降压能力不足的问题。(The invention discloses a valve plug and an adjusting valve. The pressure reducing rings are provided with a plurality of through holes, and the through holes on the adjacent pressure reducing rings are distributed in a staggered manner. When the pressure reducing ring is installed in the valve body and opened, the first guide part and the pressure reducing ring on the first guide part move upwards, a medium enters the pressure reducing ring on the outermost layer firstly, flows into a medium space formed by the next pressure reducing ring after passing through the through hole on the pressure reducing ring, and the working principle is that the medium is throttled by the through hole and then collides with each other through the flowing inside the pressure reducing ring and is reduced in pressure by changing the flowing direction. After the pressure is reduced, the scouring of the valve core and the valve body is much smaller, and the sealing performance and the service life of the valve are ensured. Simultaneously, can set up multilayer voltage reduction ring according to the demand and improve the pressure reduction ability to reach required step-down requirement, solved the not enough problem of current air-vent valve sleeve pressure reduction ability.)

1. A valve plug is characterized by being arranged in a valve body and comprising a first guide part and a second guide part; the first end of the first guide part is connected with an external execution part, and the second end of the first guide part is connected with the second guide part;

the second guide part comprises a plurality of pressure reduction rings which are arranged at the second end of the first guide part, the diameters of the pressure reduction rings are sequentially reduced, the pressure reduction rings are sequentially sleeved, and adjacent pressure reduction rings are matched with each other to form a medium space; each the reducing ring is equipped with a plurality of layers of through hole groups in vertical direction, each the axis of the through-hole of through hole group all is located the coplanar, and adjacent on the reducing ring through-hole dislocation set.

The outer side faces of the first guide portion and the pressure reducing ring on the outermost side are respectively used for being in sliding connection with the guide channel of the valve body.

2. The valve plug of claim 1, wherein the outer side surface of each pressure reducing ring is provided with a plurality of annular grooves in a vertical direction, and the annular grooves on each pressure reducing ring correspond one to one; in the adjacent pressure reduction rings, the inner circular surface of the pressure reduction ring with the large diameter is connected with the outer circular surface of the pressure reduction ring with the small diameter; the through holes are distributed in the annular grooves and are used for communicating the adjacent annular grooves.

3. The valve plug of claim 2, wherein a plurality of the sets of through-holes correspond one-to-one with a plurality of the annular grooves.

4. The valve plug of claim 1 wherein the number and diameter of the through holes in the innermost pressure relief ring is adapted to a predetermined percentage flow rate.

5. The valve plug of claim 1, wherein the plurality of pressure relief rings comprise a plug inner layer and a plug outer layer, the plug outer layer being disposed around the plug inner layer; the valve plug is outer with the valve plug inlayer is equipped with a plurality of layers of through-hole group, each in vertical direction the axis of the through-hole of through-hole group all is located the coplanar, just on the valve plug is outer the through-hole with on the valve plug inlayer the through-hole dislocation distribution.

6. The valve plug according to claim 5, wherein the inner layer of the valve plug and the outer layer of the valve plug are provided with a plurality of annular grooves in a vertical direction, and a plurality of the through hole groups are respectively distributed in the plurality of annular grooves.

7. A regulator valve comprising the valve plug of any of claims 1-6, further comprising a valve body, a valve seat, a sleeve;

the valve seat is arranged in the valve main body;

the sleeve is arranged on the valve seat and matched with the valve seat to form an accommodating space;

the valve plug is connected with the accommodating space in a sliding mode, and the top of the valve plug is connected with an external actuating mechanism through a valve rod.

8. The regulator valve of claim 7, wherein the first guide is a plug body;

the valve seat is provided with an accommodating groove, and the accommodating groove is matched with the inner cavity of the sleeve to form the accommodating space; the valve plug body is connected to the sleeve in a sliding mode, and the outermost side of the valve plug body is connected with the outer side face of the pressure reducing ring in a sliding mode through the inner wall face of the accommodating groove.

9. The regulator valve according to claim 7, wherein said valve body includes a valve body and a valve cover, said valve cover covering said valve body and cooperating to define a flow-through space, said valve seat and said sleeve both being disposed in said flow-through space; the valve rod extends out of the valve cover to be connected with an external actuating mechanism.

10. The regulator valve of claim 7 wherein said sleeve is integrally formed with said valve seat.

Technical Field

The invention belongs to the technical field of valves, and particularly relates to a valve plug and a regulating valve.

Background

China is a big energy country, and regulating valves under high working conditions are more and more widely used, particularly in occasions of high pressure difference and cavitation resistance, but the regulating valves used under the high working conditions are basically monopolized abroad, and the research and development in the aspect of China are lagged, and no independent product exists.

Under the working condition of large pressure difference, a labyrinth valve is required under the conventional condition, but the labyrinth valve is very expensive, and the requirement on the cleanliness of a medium is high, so that the cost of the regulating valve is high. And if the most common sleeve that punches is adopted, the cost can reduce, but punch alone on the sleeve and set up multistage step-down, the step-down progression probably is not enough, can't satisfy the needs. Moreover, the sleeve is perforated with the problem of small opening oscillations.

Disclosure of Invention

The invention aims to provide a valve plug and a regulating valve so as to solve the problem that the pressure reducing capacity of a sleeve of the conventional pressure regulating valve is insufficient.

In order to solve the problems, the technical scheme of the invention is as follows:

the valve plug is arranged in a valve body and comprises a first guide part and a second guide part; the first end of the first guide part is connected with an external execution part, and the second end of the first guide part is connected with the second guide part;

the second guide part comprises a plurality of pressure reduction rings which are arranged at the second end of the first guide part, the diameters of the pressure reduction rings are sequentially reduced, the pressure reduction rings are sequentially sleeved, and adjacent pressure reduction rings are matched with each other to form a medium space; each the reducing ring is equipped with a plurality of layers of through hole groups in vertical direction, each the axis of the through-hole of through hole group all is located the coplanar, and adjacent on the reducing ring through-hole dislocation set.

The outer side faces of the first guide portion and the pressure reducing ring on the outermost side are respectively used for being in sliding connection with the guide channel of the valve body.

According to the valve plug, the outer side surface of each pressure reducing ring is provided with a plurality of annular grooves in the vertical direction, and the annular grooves on each pressure reducing ring correspond to one another; in the adjacent pressure reduction rings, the inner circular surface of the pressure reduction ring with the large diameter is connected with the outer circular surface of the pressure reduction ring with the small diameter; the through holes are distributed in the annular grooves and are used for communicating the adjacent annular grooves.

According to the valve plug, the plurality of through hole groups correspond to the plurality of annular grooves one by one.

According to the valve plug, the number and the aperture of the through holes in the pressure reduction ring at the innermost side are adaptive to the preset percentage flow.

According to the valve plug, the plurality of pressure reducing rings are the inner layer of the valve plug and the outer layer of the valve plug, and the outer layer of the valve plug is sleeved on the inner layer of the valve plug; the valve plug is outer with the valve plug inlayer is equipped with a plurality of layers of through-hole group, each in vertical direction the axis of the through-hole of through-hole group all is located the coplanar, just on the valve plug is outer the through-hole with on the valve plug inlayer the through-hole dislocation distribution.

According to the valve plug, the outer side surfaces of the inner layer and the outer layer of the valve plug are respectively provided with a plurality of annular grooves in the vertical direction, and the plurality of through holes are respectively distributed in the plurality of annular grooves.

The regulating valve comprises the valve plug, a valve body, a valve seat and a sleeve, wherein the valve plug is arranged in the valve body;

the valve seat is arranged in the valve main body;

the sleeve is arranged on the valve seat and matched with the valve seat to form an accommodating space;

the valve plug is connected with the accommodating space in a sliding mode, and the top of the valve plug is connected with an external actuating mechanism through a valve rod.

According to the regulating valve, the first guide part is a valve plug body;

the valve seat is provided with an accommodating groove, and the accommodating groove is matched with the inner cavity of the sleeve to form the accommodating space; the valve plug body is connected to the sleeve in a sliding mode, and the outermost side of the valve plug body is connected with the outer side face of the pressure reducing ring in a sliding mode through the inner wall face of the accommodating groove.

According to the regulating valve, the valve main body comprises a valve body and a valve cover, the valve cover covers the valve body and is matched with the valve body to form a circulation space, and the valve seat and the sleeve are arranged in the circulation space; the valve rod extends out of the valve cover to be connected with an external actuating mechanism.

In the regulating valve of the invention, the sleeve and the valve seat are integrally formed.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:

in one embodiment of the invention, the valve plug is arranged into the first guide part and the second guide part which are connected, the second guide part is a plurality of pressure reducing rings with through holes, and the pressure reducing rings are sequentially reduced in diameter and sequentially sleeved. The pressure reducing rings are provided with a plurality of through holes, and the through holes on the adjacent pressure reducing rings are distributed in a staggered manner. When the pressure reducing valve is installed in a valve body and opened, the first guide part and the pressure reducing ring on the first guide part move upwards, a medium enters the pressure reducing ring on the outermost layer firstly, flows into a medium space formed by the next pressure reducing ring after passing through the through hole on the pressure reducing ring, and finally flows into the valve, and the working principle is that the medium is throttled by the through hole and then flows through the inside of the pressure reducing ring to mutually collide and the pressure is reduced by changing the flow direction. After the pressure is reduced, the scouring of the valve core and the valve body is much smaller, the sealing performance and the service life of the valve are ensured, and the noise is also reduced greatly due to the pressure reduction. Simultaneously, can set up multilayer voltage reduction ring according to the demand and improve the pressure reduction ability to reach required step-down requirement, solved the not enough problem of current air-vent valve sleeve pressure reduction ability.

Drawings

FIG. 1 is a schematic illustration of a valve plug of a regulator valve of the present invention;

FIG. 2 is a schematic illustration of an outer layer of a valve plug of a regulator valve of the present invention;

FIG. 3 is a schematic view of a through-hole arrangement in the outer layer of a valve plug for a regulator valve of the present invention;

FIG. 4 is a schematic illustration of the plug inner layer of the regulator valve of the present invention;

FIG. 5 is a schematic view of the arrangement of the through-holes in the inner layer of the plug of the regulator valve of the present invention;

FIG. 6 is a schematic view of a regulator valve of the present invention.

Description of reference numerals: 1: a valve plug body; 2: an outer layer of the valve plug; 3: an inner layer of the valve plug; 4: a through hole; 5: an annular groove; 6: a sleeve; 7: a valve seat; 8: a valve body; 9: and a valve cover.

Detailed Description

The present invention is described in further detail below with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims.

Example one

Referring to fig. 1, 2, 4, and 6, in one embodiment, a valve plug is disposed within a valve body of a regulator valve and includes a first guide and a second guide. The first end of the first guide part is connected with the external execution part, and the second end of the first guide part is connected with the second guide part.

The second guide part can include a plurality of pressure reduction rings that are arranged at the second end of the first guide part, the diameters of the pressure reduction rings are reduced in sequence and sleeved in sequence, and the adjacent pressure reduction rings are matched to form a medium space. Each pressure reducing ring is provided with a plurality of layers of through hole groups in the vertical direction, the axes of the through holes 4 of each through hole group are all located on the same plane, and the through holes 4 on the adjacent pressure reducing rings are arranged in a staggered mode.

The outer side faces of the first guide portion and the pressure reducing ring on the outermost side are respectively used for being in sliding connection with the guide channel of the valve body.

Through setting up the valve plug into continuous first guide part and second guide part, the second guide part then is a plurality of pressure reducing rings that open has the through-hole, and pressure reducing ring diameter reduces in proper order and establishes in proper order. The pressure reducing rings are provided with a plurality of through holes 4, and the through holes 4 on the adjacent pressure reducing rings are distributed in a staggered manner. When the pressure reducing valve is installed in a valve body and opened, the first guide part and the pressure reducing ring on the first guide part move upwards, a medium enters the pressure reducing ring on the outermost layer firstly, flows into a medium space formed by the next pressure reducing ring after passing through the through hole on the pressure reducing ring, and finally flows into the valve, and the working principle is that the medium is throttled by the through hole and then flows through the inside of the pressure reducing ring to mutually collide and the pressure is reduced by changing the flow direction. After the pressure is reduced, the scouring of the valve core and the valve body is much smaller, the sealing performance and the service life of the valve are ensured, and the noise is also reduced greatly due to the pressure reduction. Simultaneously, can set up multilayer voltage reduction ring according to the demand and improve the pressure reduction ability to reach required step-down requirement, solved the not enough problem of current air-vent valve sleeve pressure reduction ability.

Simultaneously, set up first guide part and second guide part into sliding connection in the valve body in the mode of direction passageway, realized two upper and lower direction of valve plug, the operation is stable. Set up dual direction on the valve plug, the afterbody sets up multistage step-down simultaneously, has both reached the step-down requirement, has strengthened the stability of valve, has controlled the cost again.

The following further describes the specific structure of the valve plug of this embodiment:

in this embodiment, the lateral surface of each step-down ring all is equipped with a plurality of annular grooves 5 in vertical direction, and the annular groove 5 one-to-one on each step-down ring. Further, the corresponding annular grooves 5 have the same width and are located on the same horizontal plane.

In the adjacent pressure reducing rings, the inner circular surface of the pressure reducing ring with the large diameter is connected with the outer circular surface of the pressure reducing ring with the small diameter, namely, the adjacent pressure reducing rings are tightly matched and welded together. The plurality of through holes are distributed in the plurality of annular grooves 5 and are used for communicating the adjacent annular grooves 5, namely the adjacent annular grooves 5 are connected through the through holes 4, so that a medium circulation channel is formed.

Specifically, the plurality of through hole groups correspond to the plurality of annular grooves 5 one by one, that is, one through hole group is disposed in each annular groove 5, and of course, under the requirement of the working condition, a plurality of groups may be disposed, which is not specifically limited herein. Referring to fig. 3 and 5, this is the arrangement of two sets of through holes in each annular groove.

In the present embodiment, the group of through holes, i.e. the number of through holes 4, opened in the annular groove 5, the diameter and number of the through holes 4 may be determined according to the operating conditions. However, no matter several rows, the positions of the through holes 4 on the two adjacent voltage reduction rings need to be staggered, so that the straight-through phenomenon is avoided.

In the present embodiment, the number and the diameter of the through holes 4 on the innermost pressure reduction ring are adapted to the preset percentage flow. Under some working conditions, customers require equal percentage flow characteristics, and the conventional labyrinth valve cannot do the equal percentage flow characteristics. And set up the step-down ring, can set up the quantity and the diameter of through-hole 4 according to equal percentage flow characteristic at the step-down ring of the inlayer of valve plug body 1, reach customer's requirement.

Example two

Referring to fig. 1, 2, 4 and 6, in one embodiment, a regulator valve includes the valve plug of the first embodiment, and further includes a valve body, a valve seat 7, and a sleeve 6. Wherein, the first guiding part is a valve plug body.

Wherein the valve seat 7 is provided in the valve body. The sleeve 6 is arranged on the valve seat 7 and is matched with the valve seat to form an accommodating space. The valve plug body 1 is connected with the accommodating space in a sliding mode, and the top of the valve plug body is connected with an external actuating mechanism through a valve rod.

This embodiment forms an accommodation space through set up disk seat 7 and sleeve 6 and cooperation in the valve main part to set up sliding connection's valve plug body 1 in this accommodation space, the bottom surface of valve plug body 1 then sets up a plurality of decompression rings that open has through-hole 4, and the decompression ring diameter reduces in proper order and overlaps in proper order and establish. The pressure reducing rings are provided with a plurality of through holes 4, and the through holes 4 on the adjacent pressure reducing rings are distributed in a staggered manner. When the valve is opened, valve plug body 1 upward movement, the medium gets into outermost pressure reducing ring earlier, flows in the medium space that forms with next pressure reducing ring after through-hole 4 on this pressure reducing ring, after 7 inflow valves through the disk seat at last, and the principle of work is that the medium passes through 4 throttles of through-hole, then through the inside change step-down of flow collision and the flow direction of pressure reducing ring. After the pressure is reduced, the scouring of the sealing surfaces of the valve core and the valve seat 7 is much smaller, the sealing performance and the service life of the valve are ensured, and the oscillation and the noise are also reduced greatly due to the pressure reduction. Simultaneously, can set up multilayer voltage reduction ring according to the demand and improve the pressure reduction ability to reach required step-down requirement, solved the not enough problem of current air-vent valve sleeve pressure reduction ability.

Under some working conditions, the pressure difference is large, a labyrinth valve is required under the conventional condition, but the labyrinth valve is very expensive and has high requirement on the cleanliness of a medium. If adopt the most common sleeve 6 that punches, the cost can reduce, but punch alone on sleeve 6 and set up multistage step-down, the step-down progression probably is not enough, like this, if set up multistage step-down on the bottom surface of valve plug body 1, both reached the step-down requirement, controlled the cost again. Of course, a low noise valve seat 7 may be provided to better reduce noise, if desired.

The specific structure of the regulating valve of the present embodiment is further described below:

referring to fig. 6, in the present embodiment, the valve seat 7 is provided with a receiving groove, and the receiving groove and the inner cavity of the sleeve 6 cooperate to form a receiving space. The valve plug body 1 is connected to the sleeve 6 in a sliding mode, and the outer side face of the pressure reducing ring on the outermost side is connected with the inner wall face of the accommodating groove in a sliding mode. That is, the outer surface of the valve plug body 1 becomes the upper guide portion of the valve plug body 1, the outer surface of the outermost pressure reducing ring becomes the lower guide portion of the valve plug body 1, the upper guide portion slides with the sleeve 6, the lower guide portion slides with the accommodating groove, and when the valve needs to be opened, the actuator drives the valve rod valve plug body 1 to move upwards. The upper guiding portion of the plug body 1 engages the sleeve 6 while moving within the sleeve 6 and the lower guiding portion of the plug body 1 engages the valve seat 7 while moving within the valve seat 7. Therefore, the upper guide and the lower guide are arranged in the valve, and the operation is stable.

Further, the sleeve 6 and the valve seat 7 may be integrally formed. Of course, the sleeve 6 and the valve seat 7 may be split according to the requirements of the working conditions.

In this embodiment, the valve body may specifically include a valve body 8 and a valve cover 9, the valve cover 9 covers the valve body 8 and cooperates with the valve body to form a flow space, and the valve seat 7 and the sleeve 6 are both disposed in the flow space. The valve rod extends out of the valve cover 9 and is connected with an external actuating mechanism.

A specific embodiment of this embodiment is described below:

in this embodiment, a plurality of pressure reducing rings are two-layer, and valve plug inlayer 3 and the outer 2 of valve plug promptly, valve plug inlayer 3 is located to the outer 2 covers of valve plug. The outer 2 and the valve plug inlayer 3 of valve plug are equipped with a plurality of layers of through-hole group in vertical direction, specifically can be six groups, and the axis of the through-hole 4 of each through-hole group all is located the coplanar, and the through-hole 4 on the outer 2 of valve plug and the through-hole 4 dislocation distribution on the valve plug inlayer 3.

The lateral surface of valve plug inlayer 3 and valve plug skin 2 all is equipped with a plurality of ring channels on vertical direction, and the one-to-one, and a plurality of through-hole groups then divide respectively one by one in corresponding annular groove 5.

Similarly, the valve seat 7 is provided with an accommodating groove, and the accommodating groove is matched with the inner cavity of the sleeve 6 to form an accommodating space. At this time, the valve plug body 1 is slidably connected to the sleeve 6, and the outer side surface of the valve plug outer layer 2 is slidably connected to the inner wall surface of the accommodating groove.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.