CN211082905U

CN211082905U - Flow regulating valve

Info

Publication number: CN211082905U
Application number: CN201921242568.9U
Authority: CN
Inventors: 姚丁夫; 刘睿; 黄文�; 赵云洋; 李升进; 高骞; 刘家源
Original assignee: Avic Apc Integration Equipment Co ltd
Current assignee: Avic Apc Integration Equipment Co ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-07-24
Anticipated expiration: 2029-08-02

Abstract

The utility model relates to a flow control valve, including outer valve body 1, interior valve body 2, electric actuator 3, supporting seat 4, case 5, sealing washer 6, direction hollow shaft 7, regulation profile 8 and joint bearing 13. The outer valve body is a through pipe with two ends being contracted by a front conical pipe, a middle circular pipe and a rear conical pipe, and the inner wall surface of the rear conical pipe is an adjusting profile; the inner valve body 2 is positioned in the outer valve body 1 and is coaxially arranged; an annular fluid channel is formed between the outer valve body 1 and the inner valve body 2; the utility model realizes the demand of linear flow regulation characteristic in engineering by the design of regulating the profile curve; the high-precision servo motor and the electric cylinder are adopted for driving, so that the displacement adjustment precision of the valve core is improved, and the high-precision flow adjustment is realized; by adopting the structural form of the annular gap regulating valve, the linear flow regulating characteristic is kept in the full stroke range, and the regulating range is wide. The test result shows that the invention has larger application value.

Description

Flow regulating valve

Technical Field

The utility model relates to a valve field, concretely relates to flow control valve.

Background

In the field of special test aerodynamics, the valve is required to have linear flow regulation characteristics, high flow regulation precision and wide flow regulation range. The adopted valves comprise regulating valves such as a digital valve, a butterfly valve, a ball valve, a single seat valve, a circular seam valve and the like, and the valves can not completely meet the requirements. The digital valve is a regulating valve formed by connecting a plurality of switch valves in parallel, so the requirement of linear flow regulation characteristic cannot be met, and the digital valve with a plurality of positions is required to be used for large-range and high-precision flow control, so the equipment cost is high; the flow regulation precision of common regulating valves such as butterfly valves, ball valves, switch valves and the like cannot meet the test requirements; the circular seam valve is mainly used for pressure regulation and cannot meet the requirement of linear flow regulation characteristic

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the circular seam valve has the advantages of linear flow regulation characteristic, high regulation precision and wide regulation range. The design of the adjusting profile curve realizes the requirement on the linear flow adjusting characteristic in engineering; the high-precision servo motor and the electric cylinder are adopted for driving, so that the displacement adjustment precision of the valve core is improved, and the high-precision flow adjustment is realized; by adopting the structural form of the annular gap regulating valve, the linear flow regulating characteristic is kept in the full stroke range, and the regulating range is wide. The test result shows that the utility model has great application value.

Technical scheme

The flow regulating valve comprises an outer valve body 1, an inner valve body 2, an electric actuating cylinder 3, a supporting seat 4, a valve core 5, a sealing ring 6, a guide hollow shaft 7, a regulating molded surface 8 and a joint bearing 13. The outer valve body is a through pipe with two ends being contracted by a front conical pipe, a middle circular pipe and a rear conical pipe, and the inner wall surface of the rear conical pipe is an adjusting profile; the inner valve body 2 is positioned in the outer valve body 1 and is coaxially arranged; an annular fluid channel is formed between the outer valve body 1 and the inner valve body 2;

the inner valve body 2 is of a barrel structure with one end being a conical bottom and the other end being an opening, the opening end is positioned in the rear conical tube, a support seat 4 is fixedly connected in the inner valve body, an electric actuating cylinder is fixedly arranged on the support seat, a guide hollow shaft is also fixedly arranged on the support seat, the telescopic end of the actuating cylinder moves in the guide hollow shaft along the central axis of the regulating valve, a long through hole extending axially is formed in the guide hollow shaft, a sliding block is connected with the telescopic end of the actuating cylinder through a joint bearing or a universal joint, and the sliding block slides in the long through hole along the axial direction; the valve core is sleeved on the guide hollow shaft, dynamic sealing is arranged between the valve core and the guide hollow shaft, and dynamic sealing is arranged between the valve core and the inner wall of the inner valve body; the valve core is fixedly connected with the sliding block, a sealing ring 6 is fixed at the end part of the valve core, an annular gap is formed between the sealing ring and the adjusting molded surface, and the valve core slides back and forth to change the width of the annular gap so as to realize flow adjustment.

Furthermore, the slider includes a switching block 14 and an inserting plate 15, the switching block 14 slides in the long through hole, the inserting plate connects the switching block and the valve core, and the switching block is connected with the telescopic end of the actuating cylinder through a joint bearing or a universal joint.

Further, the valve core comprises an outer sleeve 10, an inner sleeve 11 and a pressing ring 12; the outer sleeve 10 and the inner sleeve 11 are fixedly connected, and the pressing ring 12 presses the sealing ring 5 on the outer sleeve 10 through bolt connection. Preferably, the valve core is a cast aluminum alloy piece.

The end cover is fixed at the necking position and is fixedly connected with the guide hollow shaft to support the guide hollow shaft.

Furthermore, the outer valve body is fixedly connected with the inner valve body through a rib plate.

Furthermore, the valve also comprises a linear displacement sensor used for measuring the displacement of the valve core.

Further, the electric actuating cylinder comprises a motor and an actuating device.

Furthermore, a sealing ring is arranged between the valve core and the guide hollow shaft, and a sealing ring is arranged between the valve core and the inner wall of the inner valve body.

Furthermore, three long slotted holes are uniformly distributed on the guide hollow shaft.

The sliding block is connected with the electric actuating cylinder 3 through two joint bearings 13, so that the damage to the guide shaft caused by overlarge friction resistance due to coaxiality error of the electric cylinder 3 and the valve core is avoided.

Technical effects

The utility model realizes the demand of linear flow regulation characteristic in engineering by the design of regulating the profile curve; the high-precision servo motor and the electric cylinder are adopted for driving, so that the displacement adjustment precision of the valve core is improved, and the high-precision flow adjustment is realized; by adopting the structural form of the annular gap regulating valve, the linear flow regulating characteristic is kept in the full stroke range, and the regulating range is wide. The test result shows that the utility model has great application value.

Drawings

FIG. 1 is a cross-sectional view of the structure of the present application;

FIG. 2 is a cross-sectional view of the valve cartridge;

FIG. 3 is a schematic diagram of the electric ram, hollow shaft and valve core;

wherein: the valve comprises an outer valve body 1, an inner valve body 2, an electric actuating cylinder 3, a supporting seat 4, a valve core 5, a sealing ring 6, a guide hollow shaft 7, an adjusting molded surface 8, an end cover 9, an outer sleeve 10, an inner sleeve 11, a pressing ring 12, a joint bearing 13, a transfer block 14 and an inserting plate 15.

Detailed Description

Referring to the attached drawings 1-3, the flow regulating valve specifically comprises an outer valve body 1, an inner valve body 2, an electric actuating cylinder 3, a supporting seat 4, a valve core 5, a sealing ring 6, a guide hollow shaft 7, a regulating molded surface 8 and a joint bearing 13. The outer valve body is a through pipe with two ends being contracted by a front conical pipe, a middle circular pipe and a rear conical pipe, and the inner wall surface of the rear conical pipe is an adjusting profile; the inner valve body 2 is positioned in the outer valve body 1 and is coaxially arranged; an annular fluid channel is formed between the outer valve body 1 and the inner valve body 2;

The slider comprises a transfer block 14 and an inserting plate 15, the transfer block 14 slides in the long through hole, the inserting plate is connected with the transfer block and the valve core, and the transfer block is connected with the telescopic end of the actuating cylinder through a knuckle bearing or a universal joint.

The valve core comprises an outer sleeve 10, an inner sleeve 11 and a pressing ring 12; the outer sleeve 10 and the inner sleeve 11 are fixedly connected, and the pressing ring 12 presses the sealing ring 5 on the outer sleeve 10 through bolt connection. Preferably, the valve core is a cast aluminum alloy piece.

The outer valve body is fixedly connected with the inner valve body through a rib plate.

The linear displacement sensor is used for measuring the displacement of the valve core.

The electric actuating cylinder comprises a motor and an actuating device.

And a sealing ring is arranged between the valve core and the guide hollow shaft, and a sealing ring is arranged between the valve core and the inner wall of the inner valve body.

Three long slotted holes are uniformly distributed on the guide hollow shaft.

Claims

1. A flow control valve characterized in that: the valve comprises an outer valve body, an inner valve body, an electric actuating cylinder, a supporting seat, a valve core, a sealing ring, a guide hollow shaft, an adjusting molded surface and a joint bearing; the outer valve body is a through pipe with two ends being contracted by a front conical pipe, a middle circular pipe and a rear conical pipe, and the inner wall surface of the rear conical pipe is an adjusting profile; the inner valve body is positioned in the outer valve body and is coaxially arranged; an annular fluid channel is formed between the outer valve body and the inner valve body;

the inner valve body is of a cylindrical structure with one end being a conical bottom and the other end being an opening, the opening end is positioned in the rear conical tube, a supporting seat is fixedly connected in the inner valve body, an electric actuating cylinder is fixedly arranged on the supporting seat, a guiding hollow shaft is also fixedly arranged on the supporting seat, the telescopic end of the actuating cylinder moves in the guiding hollow shaft along the central axis of the regulating valve, a long through hole extending axially is formed in the guiding hollow shaft, a sliding block is connected with the telescopic end of the actuating cylinder through a joint bearing or a universal joint, and the sliding block slides in the long through hole along the axial direction; the valve core is sleeved on the guide hollow shaft, dynamic sealing is arranged between the valve core and the guide hollow shaft, and dynamic sealing is arranged between the valve core and the inner wall of the inner valve body; the valve core is fixedly connected with the sliding block, a sealing ring is fixed at the end part of the valve core, an annular gap is formed between the sealing ring and the adjusting molded surface, and the valve core slides back and forth to change the width of the annular gap so as to realize flow adjustment.

2. A flow control valve as defined in claim 1, wherein: the sliding block comprises a transfer block and an inserting plate, the transfer block slides in the long through hole, the inserting plate is connected with the transfer block and the valve core, and the transfer block is connected with the telescopic end of the actuating cylinder through a joint bearing or a universal joint.

3. A flow control valve as defined in claim 1, wherein: the valve core comprises an outer sleeve, an inner sleeve and a pressure ring; the outer sleeve is fixedly connected with the inner sleeve, and the pressing ring is connected with the sealing ring through a bolt and tightly pressed on the outer sleeve.

4. A flow regulating valve as defined in claim 3, wherein: the valve core is a cast aluminum alloy piece.

5. A flow control valve as defined in claim 1, wherein: the end cover is fixed at the necking position and is fixedly connected with the guide hollow shaft to support the guide hollow shaft.

6. A flow control valve as defined in claim 1, wherein: the linear displacement sensor is used for measuring the displacement of the valve core.

7. A flow control valve as defined in claim 1, wherein: the electric actuating cylinder comprises a motor and an actuating device.

8. A flow control valve as defined in claim 1, wherein: and a sealing ring is arranged between the valve core and the guide hollow shaft, and a sealing ring is arranged between the valve core and the inner wall of the inner valve body.

9. A flow control valve as defined in claim 1, wherein: three long slotted holes are uniformly distributed on the guide hollow shaft.

10. A flow control valve as defined in claim 1, wherein: the outer valve body is fixedly connected with the inner valve body through a rib plate.