CN113252339B

CN113252339B - Damping type mechanical simulation steering engine

Info

Publication number: CN113252339B
Application number: CN202110650948.1A
Authority: CN
Inventors: 张德文; 苏富山; 杨欢; 杨宁川; 陈永森; 邱杨; 陶林
Original assignee: Sichuan Aerospace Changzheng Equipment Manufacturing Co Ltd
Current assignee: Sichuan Aerospace Changzheng Equipment Manufacturing Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-10-01
Anticipated expiration: 2041-06-11
Also published as: CN113252339A

Abstract

The invention discloses a vibration-damping mechanical simulation steering engine which comprises an upper pipe connecting nozzle, an outer sleeve nut, a shell and a lower pipe connecting nozzle, wherein a circular boss is arranged in the middle of the upper pipe connecting nozzle, the outer sleeve nut is pressed on the circular boss of the upper pipe connecting nozzle and is connected with the shell, the shell is connected with the lower pipe connecting nozzle, a convex step is arranged on the shell, a flow limiting plate is arranged on the convex step, a sealing aluminum plate is arranged between the flow limiting plate and the upper pipe connecting nozzle, and a vibration-damping mechanism is arranged in the shell; the buffering mechanism includes guide plate, backup pad and guide bar, the backup pad passes through the little nut and connects with lower mouthpiece, guide plate middle part trompil is downthehole to be equipped with protruding step, places big nut, the guide bar upper end is equipped with the screw hole, and the screw hole links firmly with big nut, and the guide bar lower part is equipped with the locking step, is equipped with the backup pad on the locking step, be equipped with the spring between guide plate, the backup pad. The invention has simple and convenient operation, greatly improved test efficiency and good universality.

Description

Damping type mechanical simulation steering engine

Technical Field

The invention belongs to the field of valve tests and relates to a damping type mechanical simulation steering engine.

Background

The pressure reducing valve is widely applied to a fluid pipeline system, is a pressure reducing device, reduces the pressure of a high-pressure medium with pressure change to a certain low-pressure region, and releases the high-pressure medium to a low-pressure pipeline to push a load to do work. A large-flow load test is required to be carried out in a pressure reducing valve acceptance test, a low-pressure nozzle in a test system of the pressure reducing valve acceptance test is connected with an electric steering engine (load) under an actual working condition, a large amount of heat can be generated in a short time in a high-pressure working process of the steering engine under a rated working condition, the temperature rise is obvious, and a continuous test can exceed the use limit of the steering engine. Therefore, in order to prolong the service life of the steering engine in the test, the steering engine is generally required to be powered off and parked after working for 1 time in an electrified way, the next test is carried out after heat dissipation and temperature reduction, and the test efficiency is limited in the valve batch test by the dormant characteristic of the electrified steering engine. Therefore, an alternative steering engine for a pressure reducing valve test needs to be designed to meet the requirement of long-time high-load operation, and further the test efficiency of the valve is improved.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a damping type mechanical simulation steering engine.

In order to achieve the purpose, the invention adopts the following technical scheme:

a damping type mechanical simulation steering engine comprises an upper pipe connecting nozzle, an outer nut, a shell and a lower pipe connecting nozzle, wherein a round boss is arranged in the middle of the upper pipe connecting nozzle, the outer nut is pressed on the round boss of the upper pipe connecting nozzle, the outer nut is connected with the shell, the shell is connected with the lower pipe connecting nozzle, a convex step is arranged on the shell, a current limiting plate is arranged on the convex step, a sealing aluminum plate is arranged between the current limiting plate and the upper pipe connecting nozzle, and a damping mechanism is arranged inside the shell;

the buffering mechanism includes guide plate, backup pad and guide bar, the backup pad passes through the little nut and connects with lower mouthpiece, guide plate middle part trompil is downthehole to be equipped with protruding step, places big nut, the guide bar upper end is equipped with the screw hole, and the screw hole links firmly with big nut, and the guide bar lower part is equipped with the locking step, is equipped with the backup pad on the locking step, be equipped with the spring between guide plate, the backup pad.

Preferably, the flow restriction plate is provided with a flow restriction hole, and two ends of the flow restriction hole are in a horn shape. On the one hand, the noise of the gas passing through the small holes is reduced, on the other hand, the gas is uniformly sprayed in a circular shape and uniformly acts on the guide plate.

Preferably, the guide plate and the support plate are provided with guide walls so that the guide rods move vertically.

Further preferably, the conical structures of the upper filler neck and the lower filler neck are hermetically connected with the external ball joint.

Further preferably, the upper pipe connecting nozzle is provided with a nozzle with a 60-degree opening and is connected with a low-pressure outlet of the pressure reducing valve.

Further preferably, the housing is threadedly engaged with the outer nut via external threads.

Further preferably, the lower pipe nozzle is provided with an external thread to connect with an external atmosphere or a gas circuit silencer, and the outer circle of the upper part of the lower pipe nozzle is provided with a welding groove to be welded with the shell.

Further preferably, the lower pipe nozzle is provided with a groove and an internal thread, and the support plate is arranged in the lower pipe nozzle groove through three support rods.

Further preferably, the guide wall is a circular wall surface.

The pressure of a low-pressure outlet of the pressure reducing valve is constantly changed, the guide plate moves downwards when the air pressure is high, and the spring is compressed, namely, the gas works on the damping mechanism; when the air pressure is reduced, the guide plate rises under the action of the spring force.

The invention provides a high-flow load test simulation steering engine for a pressure reducing valve, which is designed to be a mechanical simulation steering engine which is used by matching an upper pipe connecting nozzle, an outer sleeve nut, a shell, a lower pipe connecting nozzle, a flow limiting plate, a sealing aluminum plate, a large nut, a flow guide plate, a spring, a small nut, a supporting plate and a guide rod. The invention has certain universality.

The invention has the following advantages:

the sealing performance of the mechanical simulation steering engine is guaranteed through the sealing aluminum plate, the conical horn mouth and welding. Meanwhile, through the precise design of parameters such as the flow limiting hole, the flow guide plate, the elastic coefficient of the spring and the like, the power characteristic of the electric steering engine can be accurately simulated, the dormancy is avoided, the pressure reducing valve test can be continuously carried out on a large scale, the operation is simple and convenient, the test is carried out continuously, the test time is shortened by half, and the test efficiency is greatly improved; simple structure, low failure rate and good universality.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic cross-sectional view of the present invention.

Fig. 3 is a schematic view of the structure of the damper mechanism.

In the drawings: 1. the device comprises an upper filler neck, 2, a jacket nut, 3, a shell, 4, a lower filler neck, 5, a flow limiting plate, 6, a sealing aluminum plate, 7, a large nut, 8, a flow guide plate, 9, a spring, 10, a small nut, 11, a supporting plate, 12 and a guide rod.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example (b):

as shown in figures 1-3, the high-flow load test simulation steering engine of the pressure reducing valve is characterized in that an upper pipe connecting nozzle is provided with a pipe nozzle with a 60-degree opening and connected with a low-pressure outlet of the pressure reducing valve, and a circular boss is arranged in the middle of the upper pipe connecting nozzle. The outer sleeve nut is provided with a hexagonal surface and an internal thread for screwing, is in threaded connection with the shell, and is screwed downwards to press the round boss of the upper pipe connecting nozzle. The external thread of the shell is in threaded connection with the outer sleeve nut, and the flow limiting plate is placed on the convex step in the middle. The sealing aluminum plate is positioned between the upper pipe connecting nozzle and the flow limiting plate and plays a role in sealing. The lower mouthpiece has the external screw thread, connects outside atmosphere or gas circuit muffler, and the upper portion excircle is opened has the welding groove, with casing welded fastening, and the upper surface has and is used for fixing three slots and the downthehole screw thread of backup pad, the outside has the hexagonal structure. The guide plate, the spring, the small nut, the support plate and the guide rod are mutually matched to form a vibration damping mechanism simulating the steering engine. Three support rods of the support plate are arranged in a groove of the lower connecting pipe nozzle and are fastened by small nuts; the middle part is provided with a hole, and the edge of the hole is upwards protruded to form a circular wall surface to play a role in guiding the guide rod. The guide plate middle part trompil, downthehole protruding step that sets up places big nut, and the lower part is provided with the circular wall that plays the guide effect for the guide bar. The spring is placed between the guide plate and the support plate and is in a compressed state. The upper end of the guide rod is provided with a threaded hole, and the lower part of the guide rod is provided with a stop step. The big nut is screwed in the threaded hole at the upper end of the guide rod. The restricted aperture both ends are tubaeform, have reduced the noise when gaseous through the aperture on the one hand, and on the other hand makes gaseous become circular even injection and goes out, evenly acts on the guide plate. The upper pipe nozzle conical structure and the lower pipe nozzle conical structure can be connected with an external ball joint adapter to realize sealing.

The invention provides a damping mechanical simulation steering engine, which comprises the following installation methods:

step 1: and assembling a vibration damping mechanism of the steering engine. The side of the support plate with the guide wall is placed upwards, the guide rod penetrates through the center hole of the support plate, the spring is installed along the guide rod, then the guide plate is screwed into the guide rod, compressed downwards and screwed into the large nut.

And 2, putting the steering engine vibration damping mechanism into the lower pipe nozzle groove, and screwing three small nuts.

And 3, putting the flow limiting plate into the shell, sequentially putting the sealing aluminum plate and the upper pipe connecting nozzle into the shell, and screwing the outer sleeve nut into the shell.

And 4, welding the shell and the lower pipe nozzle along the welding groove.

The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.

Claims

1. The utility model provides a slow vibration formula mechanical simulation steering wheel which characterized in that: the novel water pipe connecting device comprises an upper pipe connecting nozzle (1), an outer nut (2), a shell (3) and a lower pipe connecting nozzle (4), wherein a circular boss is arranged in the middle of the upper pipe connecting nozzle (1), the outer nut (2) is pressed to the circular boss of the upper pipe connecting nozzle, the outer nut (2) is connected with the shell (3), the shell (3) is connected with the lower pipe connecting nozzle (4), a convex step is arranged on the shell (3), a flow limiting plate (5) is arranged on the convex step, a sealing aluminum plate (6) is arranged between the flow limiting plate (5) and the upper pipe connecting nozzle (1), and a slow vibration mechanism is arranged inside the shell (3);

the damping mechanism comprises a guide plate (8), a support plate (11) and a guide rod (12), wherein the support plate (11) is connected with a lower nozzle (4) through a small nut (10), the middle of the guide plate (8) is provided with a hole, a convex step is arranged in the hole, a large nut (7) is placed, a threaded hole is formed in the upper end of the guide rod (12), the threaded hole is fixedly connected with the large nut (7), a locking step is arranged on the lower portion of the guide rod (12), the support plate (11) is arranged on the locking step, and a spring (9) is arranged between the guide plate (8) and the support plate (11).

2. The damping mechanical simulation steering engine of claim 1, wherein: the flow limiting plate (5) is provided with a flow limiting hole, and two ends of the flow limiting hole are horn-shaped.

3. The damping mechanical simulation steering engine of claim 1, wherein: the guide plate (8) and the support plate (11) are both provided with guide walls.

4. A damped mechanical analog steering engine according to any one of claims 1 to 3, further comprising: the conical structures of the upper pipe connecting nozzle (1) and the lower pipe connecting nozzle (4) are connected with an external ball head adapter in a sealing mode.

5. A damped mechanical analog steering engine according to any one of claims 1 to 3, further comprising: the upper filler neck (1) is provided with a 60-degree opening neck.

6. A damped mechanical analog steering engine according to any one of claims 1 to 3, further comprising: the shell (3) is in threaded connection with the outer sleeve nut (2) through external threads.

7. A damped mechanical analog steering engine according to any one of claims 1 to 3, further comprising: lower mouthpiece (4) are equipped with the external screw thread, connect outside atmosphere or gas circuit muffler, and lower mouthpiece (4) upper portion excircle is opened has the welding groove, with casing (3) weld forming.

8. A damped mechanical analog steering engine according to any one of claims 1 to 3, further comprising: lower mouthpiece (4) are equipped with slot and downthehole screw thread, nozzle (4) ditch inslot is down placed in through three bracing pieces in backup pad (11).

9. A damped mechanical analog steering engine as set forth in claim 3, wherein: the guide wall is a circular wall surface.