CN216812338U - Hydraulic drive pressure reducing valve for wind tunnel - Google Patents

Abstract

The utility model relates to the technical field of pressure reducing valves, and discloses a hydraulically driven pressure reducing valve used in a wind tunnel, comprising a support column, a U-shaped support block and a pressure reducing valve body. assembly mechanism; the disassembly mechanism includes a push plate, a push rod, a spring, a limit slide, a clamping frame, a swash plate, a clamping block, and a chute, the push plate is fixedly installed at the bottom end of the push rod, and the push rod passes through The bottom end of the U-shaped support block, and the top end of the top rod extends into the frame groove opened in the U-shaped support block, and the top of the pressure reducing valve body is fixedly installed with a pull ring, and the number of the pull ring is two, so The top of the pressure reducing valve body is provided with a sleeve, which can facilitate personnel to disassemble and assemble the pressure reducing valve body under the joint action of various mechanisms, which greatly saves the time spent by personnel when disassembling and assembling the pressure reducing valve body, effectively improving The work efficiency of the force personnel is improved, and the structure of the mechanism is simple and convenient to operate, and the practicability is strong.

Description

A hydraulically actuated pressure reducing valve for wind tunnels

technical field

The utility model relates to the technical field of pressure reducing valves, in particular to a hydraulically driven pressure reducing valve used in a wind tunnel.

Background technique

Wind tunnels have always played a very important role in aerodynamic research and aircraft design. Many important theories of aerodynamics are put forward after a lot of observations in wind tunnel experiments, and their applications have been verified by wind tunnel experiments; the pressure reducing valve is an important part of the wind tunnel, and it is used in hypersonic speed. In the wind tunnel, it reduces the inlet pressure to a certain required outlet pressure through the throttling of the opening and closing parts, and can use its own medium energy to keep the outlet pressure basically unchanged when the inlet pressure and flow change, and it can be used as a wind tunnel. The pressure regulating device completes the primary pressure regulation task of the wind tunnel; during the operation of the wind tunnel, it roughly adjusts the high-pressure main air flow to improve the accuracy and stability of the secondary pressure regulation; the pressure reducing valve has good pressure regulation characteristics and decompression. The existing hydraulic pressure reducing valve is inconvenient for personnel to disassemble and assemble it, which greatly reduces the work efficiency of personnel, and may cause the phenomenon that the experiment cannot be carried out in time.

Utility model content

The purpose of the present invention is to provide a hydraulically driven pressure reducing valve for wind tunnels, which solves the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a hydraulically driven pressure reducing valve for a wind tunnel, comprising a support column, a U-shaped support block, and a pressure reducing valve body, wherein the U-shaped support block is internally provided with a decompression valve. installation mechanism;

The disassembly and assembly mechanism includes a push plate, a top rod, a spring, a limit slide plate, a clamping frame, a swash plate, a block, and a chute. The push plate is fixedly installed at the bottom end of the top rod, and the top rod passes through the U-shaped brace The bottom end of the block, and the top end of the top rod extends into the frame slot opened inside the U-shaped support block, the card frame is fixedly installed on the top end of the top rod, the limit slide plate is fixedly installed on the outer wall of the top rod, the limit The position slide plate is slidably connected with the limit chute opened on the inner wall of the rod groove opened at the bottom end of the U-shaped support block, one end of the spring is fixedly installed on the top end of the push plate, and the other end of the spring is fixedly installed at the bottom end of the U-shaped support block. And the spring surrounds the outer wall of the ejector rod.

Preferably, the inclined plate is fixedly installed on the outer wall of the pressure reducing valve body near the bottom end, and the inclined plate is inserted into the inclined groove. By setting the inclined groove, the inclined plate can be inserted into the inclined groove, so as to ensure Normal use of the swash plate.

Preferably, the clamping block is fixedly installed on the top end of the inclined plate near one end, and the clamping block is clamped on the clamping frame. The board and the card frame are connected and fixed.

Preferably, a pull ring is fixedly installed at the top of the pressure reducing valve body, the number of the pull rings is two, and a sleeve is provided at the top of the pressure reducing valve body, and the pull ring is protected by setting the sleeve. function to improve the service life of the pull ring.

Preferably, an insert block is fixedly installed at the bottom end of the sleeve box, the sleeve box is inserted on the top of the pressure reducing valve body through the insert block, the pull ring is arranged inside the sleeve box, and the sleeve box is set by the insert block. It can be inserted on the body of the pressure reducing valve through the insert block, so as to facilitate the disassembly and assembly of the sleeve.

Preferably, a support pad is fixedly installed on the inner wall of the U-shaped support block, the U-shaped support block is fixedly installed on the top end of the support column, and the bottom end of the support column is fixedly installed with a base, and the support pad is provided to reduce pressure reduction. The rigid contact between the valve body and the U-shaped block reduces the wear on the pressure reducing valve body.

Preferably, one end of the pressure reducing valve body is communicated with an air inlet pipe, and the other end of the pressure reducing valve body is communicated with an air outlet pipe.

The utility model provides a hydraulically driven pressure reducing valve used in a wind tunnel. The hydraulically actuated pressure reducing valve for wind tunnels has the following beneficial effects:

(1) The hydraulically driven pressure reducing valve used in the wind tunnel can facilitate personnel to reduce The disassembly and assembly of the body of the pressure reducing valve greatly saves the time spent by personnel when disassembling and assembling the body of the pressure reducing valve, and effectively improves the work efficiency of the personnel.

(2) The hydraulically driven pressure reducing valve used in the wind tunnel, through the joint action of the sleeve box and the pull ring, enables personnel to exert force on the body of the pressure reducing valve through the pull ring, so as to lift the body of the pressure reducing valve, It is convenient for personnel to install and disassemble the pressure reducing valve body. By setting the support pad, the rigid contact between the pressure reducing valve body and the U-shaped support block is reduced, the wear on the pressure reducing valve body is reduced, and the safety of the pressure reducing valve body is ensured. normal service life.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present utility model;

Fig. 2 is the front sectional structure schematic diagram of the utility model;

Fig. 3 is the side sectional structure schematic diagram of the utility model;

FIG. 4 is an enlarged structural schematic diagram of part A in FIG. 3 of the present utility model.

In the picture: 1. Support column 2. U-shaped support block 3. Pressure reducing valve body 4. Disassembly and assembly mechanism 5. Support pad 6. Set box 7. Pull ring 8. Insert block 9. Air inlet pipe 10. Air outlet pipe 11. Base 401. Push plate 402. Ejector rod 403. Spring 404. Limiting slide plate 405. Card frame 406. Inclined plate 407. Block 408. Inclined groove.

Detailed ways

As shown in Figures 1-4, the present utility model provides a technical solution: a hydraulically driven pressure reducing valve for a wind tunnel, comprising a support column 1, a U-shaped support block 2, a pressure reducing valve body 3, a pressure reducing valve A pull ring 7 is fixedly installed at the top of the main body 3, and the number of pull rings 7 is two. The top of the pressure reducing valve body 3 is provided with a sleeve 6. By setting the sleeve 6, the pull ring 7 has a protective effect, and the pull ring is improved. 7 service life, the bottom end of the sleeve box 6 is fixedly installed with an insert block 8, the sleeve box 6 is inserted on the top of the pressure reducing valve body 3 through the insert block 8, and the pull ring 7 is arranged inside the sleeve box 6. , so that the sleeve box 6 can be inserted on the pressure reducing valve body 3 through the insert block 8, so as to facilitate the disassembly and assembly of the sleeve box 6, the inner wall of the U-shaped support block 2 is fixedly installed with a support pad 5, and the U-shaped support block 2 is fixed It is installed at the top of the support column 1, and the bottom end of the support column 1 is fixedly installed with a base 11. By setting the support pad 5, the rigid contact between the pressure reducing valve body 3 and the U-shaped support block 2 is reduced, and the pressure on the pressure reducing valve body 3 is reduced. One end of the pressure reducing valve body 3 is connected with an air inlet pipe 9, and the other end of the pressure reducing valve body 3 is connected with an air outlet pipe 10. Under the combined action of the sleeve box 6 and the pull ring 7, the personnel can pass the pull The ring 7 exerts a force on the pressure reducing valve body 3, thereby lifting the pressure reducing valve body 3, which is convenient for personnel to install and disassemble the pressure reducing valve body 3. By setting the support pad 5, the pressure reducing valve body 3 and U are reduced. The rigid contact between the U-shaped support blocks 2 reduces the wear on the pressure reducing valve body 3 and ensures the normal service life of the pressure reducing valve body 3. The U-shaped support block 2 is provided with a disassembly and assembly mechanism 4;

The disassembly and assembly mechanism 4 includes a push plate 401, a top rod 402, a spring 403, a limit slide plate 404, a card frame 405, an inclined plate 406, a clamping block 407, and an inclined groove 408. The inclined plate 406 is fixedly installed on the pressure reducing valve body 3 near the bottom On the outer wall of the end, and the inclined plate 406 is inserted into the inclined groove 408, by setting the inclined groove 408, the inclined plate 406 can be inserted into the inclined groove 408, so as to ensure the normal use of the inclined plate 406, and the block 407 is fixedly installed in the inclined groove 408. The inclined plate 406 is close to the top of one end, and the clamping block 407 is clamped on the clamping frame 405. By setting the clamping block 407, the inclined plate 406 can be clamped with the clamping frame 405 through the clamping block 407, so that the inclined plate 406 and the clamping frame can be clamped. 405 is connected and fixed, the push plate 401 is fixedly installed at the bottom end of the ejector rod 402, the ejector rod 402 penetrates the bottom end of the U-shaped support block 2, and the top of the ejector rod 402 extends into the frame slot opened in the U-shaped support block 2, and the frame is clamped. 405 is fixedly installed on the top of the ejector rod 402, the limit slide plate 404 is fixedly installed on the outer wall of the ejector rod 402, the limit slider 404 is slidably connected with the limit chute opened on the inner wall of the rod groove opened at the bottom end of the U-shaped support block 2, and the spring One end of 403 is fixedly installed on the top of the push plate 401, the other end of the spring 403 is fixedly installed on the bottom end of the U-shaped support block 2, and the spring 403 surrounds the outer wall of the ejector rod 402, through the push plate 401, ejector rod 402, spring 403, limit Under the combined action of the sliding plate 404 , the clamping frame 405 , the inclined plate 406 , the clamping block 407 and the inclined groove 408 , it is convenient for personnel to disassemble and assemble the pressure reducing valve body 3 , which greatly saves the personnel when disassembling and assembling the pressure reducing valve body 3 . The time used can effectively improve the work efficiency of the force personnel, and the structure of the mechanism is simple and convenient to operate, and has strong practicability.

When the hydraulically driven pressure reducing valve for wind tunnel is in use, it first pushes the push plate 401 to move upward, the push plate 401 drives the ejector rod 402 to move upward, when the push plate 401 moves upward, the spring 403 is compressed, and the ejector rod 402 drives the card frame 405 Move upward, so that the card frame 405 and the card block 407 are no longer engaged, and then the inclined plate 406 can be pulled out from the slot 408, so that the pressure reducing valve body 3 can be separated from the U-shaped support block 2. When the pressure valve body 3 is installed, place the pressure reducing valve body 3 on the U-shaped support block 2, so that the inclined plate 406 is inserted into the inclined groove 407. When the inclined plate 406 is completely inserted into the inclined groove 408, loosen it. Push plate 401, push plate 401 moves downward under the restoring force of spring 403, push plate 401 drives ejector rod 402 to move downward, ejector rod 402 drives card frame 405 to move downward, so that card frame 405 and card block 407 By clamping, the pressure reducing valve body 3 and the U-shaped support block 2 are fixed. This mechanism facilitates the personnel to disassemble and assemble the pressure reducing valve body 3, which greatly saves the personnel when disassembling and assembling the pressure reducing valve body 3. The time used can effectively improve the work efficiency of the force personnel, and the structure of the mechanism is simple and convenient to operate, and has strong practicability; when the personnel need to lift the pressure reducing valve body 3, the sleeve box 6 is taken off, and the pull ring 7 is exposed, so that the Personnel can exert force on the pressure reducing valve body 3 through the pull ring 7, so as to lift the pressure reducing valve body 3, which is convenient for personnel to install and disassemble the pressure reducing valve body 3. By setting the support pad 5, the pressure reducing valve body 3 is reduced. The rigid contact between the body 3 and the U-shaped support block 2 reduces the wear on the pressure reducing valve body 3 and ensures the normal service life of the pressure reducing valve body 3 .

Claims (7)

1. The utility model provides a hydraulic drive relief pressure valve for wind-tunnel, includes support column (1), U type bracer (2), relief pressure valve body (3), its characterized in that: the U-shaped supporting block (2) is internally provided with a dismounting mechanism (4);

disassembly and assembly mechanism (4) includes push pedal (401), ejector pin (402), spring (403), spacing slide (404), card frame (405), swash plate (406), fixture block (407), chute (408), push pedal (401) fixed mounting is in ejector pin (402) bottom, ejector pin (402) run through U type bracer (2) bottom, just in the frame groove that U type bracer (2) inside was seted up is stretched into on ejector pin (402) top, card frame (405) fixed mounting is on ejector pin (402) top, spacing slide (404) fixed mounting is on ejector pin (402) outer wall, spacing spout sliding connection who sets up on the pole inslot wall that spacing slide (404) and U type bracer (2) bottom were seted up, spring (403) one end fixed mounting is on push pedal (401) top, spring (403) other end fixed mounting is in U type bracer (2) bottom, and the spring (403) surrounds the outer wall of the ejector rod (402).

2. A hydraulically driven pressure relief valve for a wind tunnel according to claim 1, wherein: the inclined plate (406) is fixedly installed on the outer wall, close to the bottom end, of the pressure reducing valve body (3), and the inclined plate (406) is inserted into the inclined groove (408).

3. A hydraulically driven pressure reducing valve for a wind tunnel according to claim 1, wherein: the clamping block (407) is fixedly arranged on the top end, close to one end, of the inclined plate (406), and the clamping block (407) is clamped on the clamping frame (405).

4. A hydraulically driven pressure relief valve for a wind tunnel according to claim 1, wherein: the pressure reducing valve is characterized in that pull rings (7) are fixedly mounted at the top end of the pressure reducing valve body (3), the number of the pull rings (7) is two, and a sleeve box (6) is arranged at the top end of the pressure reducing valve body (3).

5. A hydraulically driven pressure relief valve for a wind tunnel according to claim 4, wherein: the bottom end of the sleeve box (6) is fixedly provided with an inserting block (8), the sleeve box (6) is inserted into the top end of the pressure reducing valve body (3) through the inserting block (8), and the pull ring (7) is arranged inside the sleeve box (6).

6. A hydraulically driven pressure relief valve for a wind tunnel according to claim 1, wherein: fixed mounting has supporting pad (5) on U type kicking block (2) inner wall, U type kicking block (2) fixed mounting is on support column (1) top, support column (1) bottom fixed mounting has base (11).

7. A hydraulically driven pressure relief valve for a wind tunnel according to claim 1, wherein: one end of the pressure reducing valve body (3) is communicated with an air inlet pipe (9), and the other end of the pressure reducing valve body (3) is communicated with an air outlet pipe (10).

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