CN219432609U

CN219432609U - Single-layer porous throttling sleeve

Info

Publication number: CN219432609U
Application number: CN202320405571.8U
Authority: CN
Inventors: 谌传江; 颜炳良; 蒋永兵; 史沫; 苏秀丽; 苏鸿; 姚程龙; 刘朝军; 吴江莲
Original assignee: China Nuclear Power Engineering Co Ltd; Chongqing Chuanyi Control Valve Co Ltd
Current assignee: China Nuclear Power Engineering Co Ltd; Chongqing Chuanyi Control Valve Co Ltd
Priority date: 2023-03-06
Filing date: 2023-03-06
Publication date: 2023-07-28
Anticipated expiration: 2033-03-06

Abstract

The present utility model provides a single layer porous throttling sleeve comprising: a sleeve; the throttling unit is used for stably regulating the flow, the throttling unit is arranged on the side wall of the sleeve, the throttling unit comprises a plurality of groups of throttling groups, the throttling groups comprise a plurality of throttling holes, the heights of the throttling holes are sequentially increased, the increased heights among the throttling holes are smaller than the radius of the throttling holes, and the area of the throttling holes on the side wall of the same area of the sleeve is linearly increased when the height is higher, so that the beneficial effects brought by the technical scheme of the utility model at least comprise: the area of the throttling hole contained in the side wall area of the sleeve with the height difference is gradually increased along with the increase of the height on the sleeve, the flow rate through the sleeve is increased and is kept stable, and the unit increment of the throttling area is steadily upward in the change of 1% of unit stroke, so that the flow rate increment of the regulating valve at any opening degree is stable.

Description

Single-layer porous throttling sleeve

Technical Field

The application relates to the technical field of valve control, in particular to a single-layer porous throttling sleeve.

Background

The regulating valve is a terminal field regulating instrument in the automatic control system, and is installed on the process pipeline to control the process parameters according to the set requirements. The sleeve of the sleeve type regulating valve is in clearance fit with the valve clack, a plurality of throttle windows are arranged on the sleeve wall, and the opening of the regulating valve is regulated in a window mode.

The prior art scheme is as follows: on a conventional sleeve, all holes are kept consistent in size, the upper holes and the lower holes are arranged at equal intervals, the two rows of holes are arranged in a staggered mode relatively, and the holes are used as basic units of the array to perform uniform circumferential array on the sleeve. However, in the case of increasing the unit opening (1%), the area increment at different opening is fluctuated, resulting in up-and-down fluctuation of the valve flow characteristic curve, failing to satisfy the stable variation of the flow rate following the valve opening.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a single-layer porous throttling sleeve, which is used for solving the problem that the flow cannot stably change along with the valve opening due to up-and-down fluctuation of the valve flow characteristic curve in the prior art.

To achieve the above and other related objects, the present utility model provides a single layer porous throttling sleeve comprising:

a sleeve;

the throttling unit is used for stably regulating flow, the throttling unit is arranged on the side wall of the sleeve, the throttling unit comprises a plurality of throttling groups, each throttling group comprises a plurality of throttling holes, the heights of the throttling holes are sequentially increased, the increased heights of the throttling holes are smaller than the radius of the throttling holes, and the area of the throttling holes on the side wall of the sleeve with the same area is linearly increased when the height is higher.

Optionally, the side wall of the sleeve is axially divided into a plurality of throttling surfaces, each throttling surface is provided with a group of throttling groups, each group of throttling holes is obliquely upwards arranged along one end of the throttling surface towards the other end, and the throttling holes are provided with a plurality of rows.

Optionally, the sleeve is provided with a plurality of groups of orifices, and each orifice with uniform height is arranged adjacently on the side wall of the sleeve.

Alternatively, the diameters of the orifices are sequentially increased, and the height difference between the orifices adjacent to each other at the height is kept unchanged.

Alternatively, the orifices have uniform diameters, and the difference in height between the highly adjacent orifices gradually decreases.

Alternatively, the diameters of the orifices are sequentially increased, and the height difference between the orifices adjacent to each other is gradually decreased.

Alternatively, the diameters of the orifices are sequentially increased, and the height difference between the orifices adjacent to each other is gradually increased.

Optionally, a step for limiting is arranged at the inner bottom of the sleeve.

Optionally, a boss is arranged at the top of the sleeve.

Optionally, the top end face of the sleeve is provided with a plurality of threaded holes for fixing the sleeve.

As described above, the technical solution of the present utility model at least includes:

the area of the throttling hole contained in the side wall area of the sleeve with the height difference is gradually increased along with the increase of the height on the sleeve, the flow rate through the sleeve is increased and is kept stable, and the unit increment of the throttling area is steadily upward in the change of 1% of unit stroke, so that the flow rate increment of the regulating valve at any opening degree is stable.

Drawings

FIG. 1 shows a cross-sectional view of a sleeve according to an exemplary embodiment of the present utility model;

fig. 2 shows a schematic diagram of a throttle group arrangement according to an exemplary embodiment of the present utility model.

Description of the part reference numerals

1. A sleeve;

2. an orifice;

3. a step;

4. a boss;

5. and (3) a threaded hole.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model.

It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

Fig. 1 is a cross-sectional view of a sleeve shown in an exemplary embodiment of the present application, please refer to fig. 1, which provides a single layer porous throttling sleeve, comprising:

a sleeve 1;

the throttle unit is used for stably regulating flow, the throttle unit is arranged on the side wall of the sleeve 1 and comprises a plurality of throttle groups, the throttle groups comprise a plurality of throttle holes 2, the heights of the throttle holes 2 are sequentially increased, the increased heights among the throttle holes 2 are smaller than the radius of the throttle holes 2, and the areas of the throttle holes 2 on the side wall of the sleeve 1 with the same area are linearly increased when the heights are higher.

In one embodiment of the present application, specifically, the sleeve 1 is disposed in the valve body for adjusting the flow, the sleeve 1 is provided with a throttling unit, the throttling unit includes a plurality of groups of throttling groups, each throttling group includes a uniform number of throttling holes 2, and the height position of each throttling hole 2 is gradually increased, the same height difference of the side wall of the sleeve 1 is provided along the axial direction (the same height difference is a position from the bottommost to 10mm, for example, the height difference is 10mm, the area of the throttling hole 2 in the area of the sleeve 1 from the position of 10mm to the position of 20mm, and the height difference is also 10 mm), the larger the area of the throttling hole 2 in the side wall area of the sleeve 1 is, and the linear increment is provided, when the valve switch is opened, the unit increment of the throttling area keeps the upward trend in a unit stroke (1%) and the flow increment of any opening is kept constant.

The side wall of the sleeve 1 is axially divided into a plurality of throttling surfaces, each throttling surface is provided with a group of throttling groups, each group of throttling holes 2 is obliquely upwards arranged along one end of the throttling surface towards the other end, and the throttling holes 2 are provided with a plurality of rows.

In one embodiment of the present application, specifically, the side wall of the sleeve 1 is uniformly divided into six vertical throttle surfaces, each throttle surface is provided with a throttle group, each throttle group comprises forty throttle holes 2, each throttle hole 2 is divided into five rows, each row comprises eight throttle holes 2, each row of throttle holes 2 is arranged from left to right, and when each row of throttle holes 2 is arranged from left to right, the height of the throttle hole 2 located in the sleeve 1 is sequentially increased.

The sleeve 1 is provided with a plurality of groups of orifices 2, and each orifice 2 with the same height is adjacently arranged on the side wall of the sleeve 1.

In one embodiment of the present application, specifically, six groups of orifices 2 are provided, each group of orifices includes forty orifices 2, six orifices 2 of the six groups of orifices 2 having identical heights are arranged in parallel, and then other orifices 2 of identical heights are also arranged in parallel on the side wall of the sleeve 1.

The diameters of the orifices 2 are sequentially increased, and the height difference between the orifices 2 adjacent in height is kept unchanged.

The diameters of the orifices 2 are uniform, and the height difference between the orifices 2 adjacent in height gradually decreases.

The diameters of the orifices 2 are sequentially increased, and the height difference between the orifices 2 adjacent in height is gradually reduced.

The diameters of the orifices 2 are sequentially increased, and the height difference between the orifices 2 adjacent in height is gradually increased.

It should be noted that, in the above four modes, the unit increment of the throttle area keeps a steady upward trend in the change of the unit stroke (1%), and the flow increment of any opening degree keeps constant.

Fig. 2 is a schematic diagram of a throttle group arrangement according to an exemplary embodiment of the present application, please refer to fig. 2:

in an embodiment of the present application, each set of orifices 2 includes five rows of orifices, the diameters of the orifices 2 in each row are identical, the diameters of the orifices 2 in the second row are larger than those of the orifices 2 in the first row, the diameters of the orifices in the first row are sequentially increased, and the hole spacing between the orifices in each row is kept unchanged, so that the arrangement is convenient for processing, and the device is more suitable for batch processing production.

Specifically, six groups of throttle groups are arranged on the sleeve 1 in total, each group of throttle groups comprises forty throttle holes 2, each throttle group comprises five rows of throttle rows, each row of throttle rows comprises eight throttle holes 2, the diameters of the throttle holes 2 in each row are sequentially increased from bottom to top, the upper and lower five rows of throttle groups are eight rows, the circle centers of the throttle holes 2 in each row are positioned on the same straight line, the diameters of the throttle holes 2 are sequentially phi 8mm, phi 9mm, phi 10mm, phi 11mm and phi 12mm from bottom to top, the distance between the upper and lower throttle holes 2 is 16mm, and the angle of the circle centers of every two adjacent throttle holes 2 is 7.5 degrees (namely, the angle between two straight lines of the circle centers of the two adjacent throttle holes 2 perpendicular to the axis of the sleeve 1 is 7.5 degrees).

The inner bottom of the sleeve 1 is provided with a step 3 for limiting, the top of the sleeve 1 is provided with a boss 4, and the top end face of the sleeve 1 is provided with a plurality of threaded holes 5 for fixing the sleeve 1.

Working principle: the valve switch is turned, the opening area of the sleeve 1 is increased upwards in a unit stroke, when the opening part exceeds the center line of the bottom-most throttle hole 2, the opening area of the bottom-most throttle hole 2 is decreased in sequence, at the moment, the throttle hole 2 positioned at the second lower position on the sleeve 1 is also opened, the opening area of the bottom-most throttle hole 2 is supplemented, and the opening area of the throttle hole 2 opened in the stroke along with the opening of the valve switch is increased linearly.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A single layer porous throttling sleeve, comprising:

a sleeve;

2. The single-layer porous throttling sleeve of claim 1, wherein: the side wall of the sleeve is axially divided into a plurality of throttling surfaces, each throttling surface is provided with a group of throttling groups, each group of throttling holes is obliquely upwards arranged along one end of each throttling surface towards the direction of the other end, and the throttling holes are provided with a plurality of rows.

3. The single-layer porous throttling sleeve of claim 1, wherein: the sleeve is provided with a plurality of groups of orifices, and each orifice with the same height is adjacently arranged on the side wall of the sleeve.

4. A single layer porous throttling sleeve according to claim 2 or 3, characterized in that: the diameters of the orifices are sequentially increased, and the height difference between the orifices adjacent in height is kept unchanged.

5. A single layer porous throttling sleeve according to claim 2 or 3, characterized in that: the diameters of the orifices are consistent, and the height difference between the orifices adjacent to each other in height is gradually reduced.

6. A single layer porous throttling sleeve according to claim 2 or 3, characterized in that: the diameters of the orifices are sequentially increased, and the height difference between the orifices adjacent in height is gradually reduced.

7. A single layer porous throttling sleeve according to claim 2 or 3, characterized in that: the diameters of the orifices are sequentially increased, and the height difference between the orifices adjacent in height is gradually increased.

8. The single-layer porous throttling sleeve of claim 1, wherein: the bottom is equipped with the step that is used for spacing in the sleeve.

9. The single-layer porous throttling sleeve of claim 1, wherein: the top of the sleeve is provided with a boss.

10. The single-layer porous throttling sleeve of claim 9, wherein: the end face of the top of the sleeve is provided with a plurality of threaded holes for fixing the sleeve.