CN209977363U

CN209977363U - Vacuum breaking device

Info

Publication number: CN209977363U
Application number: CN201920833083.0U
Authority: CN
Inventors: 曹焱焱; 付鑫; 盖国盛; 李文博; 李明; 武卉; 李井洋
Original assignee: AECC Shenyang Engine Research Institute
Current assignee: AECC Shenyang Engine Research Institute
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-01-21
Anticipated expiration: 2029-06-04

Abstract

The application belongs to the technical field of hydraulic dynamometer vacuum destruction, concretely relates to vacuum destruction device, include: a cylinder having an annular protrusion therein; a piston disposed in the cylinder; the limiting piece is arranged in the cylinder body, and a communication channel is formed between the limiting piece and the inner wall of the cylinder body; and the elastic piece is arranged between the piston and the limiting piece, and the piston is abutted against the annular protrusion by virtue of the elasticity of the elastic piece to form sealing contact.

Description

Vacuum breaking device

Technical Field

The application belongs to the technical field of hydraulic dynamometer vacuum destruction, and particularly relates to a vacuum destruction device.

Background

The hydraulic dynamometer is a device for measuring output torque, and is provided with a vacuum breaking device so as to be automatically opened when negative pressure is generated in a working cavity of the hydraulic dynamometer, suck air, break a vacuum effect and maintain the stability of pressure in the working cavity.

The existing vacuum breaking device is characterized in that due to the fact that working water media of the hydraulic dynamometer are different, water scales are easily attached to partial components in the using process, the sensitivity of the vacuum breaking device is reduced, the function of the vacuum breaking device is invalid or even water leakage is caused seriously, therefore, the vacuum breaking device needs to be detached and cleaned frequently, the existing vacuum device is complex in structure and complex in detaching process, the components of the vacuum breaking device are damaged very easily, and the use of the vacuum breaking device is limited seriously.

Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.

Disclosure of Invention

It is an object of the present application to provide a vacuum breaking apparatus to overcome or mitigate at least one of the above-mentioned disadvantages.

The technical scheme of the application is as follows:

a vacuum breaking apparatus comprising:

a cylinder having an annular protrusion therein;

a piston disposed in the cylinder;

the limiting piece is arranged in the cylinder body, and a communication channel is formed between the limiting piece and the inner wall of the cylinder body;

and the elastic piece is arranged between the piston and the limiting piece, and the piston is abutted against the annular protrusion by virtue of the elasticity of the elastic piece to form sealing contact.

According to at least one embodiment of the present application, further comprising a sealing ring disposed between the piston and the annular protrusion.

According to at least one embodiment of the application, the piston is provided with an annular clamping groove, and the sealing ring is clamped in the annular clamping groove.

According to at least one embodiment of the present application, the limiting member has a through hole thereon;

the vacuum breaking device also comprises a connecting rod, one end of the connecting rod is connected with the piston, and the other end of the connecting rod is arranged in the through hole.

According to at least one embodiment of this application, the surface that the connecting rod is located the through-hole one end has seted up a plurality of bar grooves along the axial.

According to at least one embodiment of this application, still include the push rod, one end passes annular protruding middle part and is connected with the piston, and the other end extends the barrel.

According to at least one embodiment of the present application, the elastic member is a spring, and is fitted over the link.

According to at least one embodiment of the present application, the inner wall of the cylinder has an annular groove;

the limiting ring is clamped in the annular groove; the elastic piece enables the limiting piece to be abutted against the limiting ring by means of elastic force of the elastic piece.

According to at least one embodiment of the application, the barrel is provided with an external thread for being in threaded fit connection with the water conservancy dynamometer.

Drawings

FIG. 1 is a schematic structural diagram of a vacuum breaking apparatus provided in an embodiment of the present application;

FIG. 2 is a view in the direction A of FIG. 1;

wherein:

1-a cylinder body; 2-a piston; 3-a limiting part; 4-an elastic member; 5-sealing ring; 6-connecting rod; 7-a push rod; 8-a limit ring; 9-a hydraulic dynamometer; 10-a communication channel; 11-strip-shaped groove.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the present application are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that in the description of the present application, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.

The present application is described in further detail below with reference to fig. 1.

A vacuum breaking apparatus comprising:

a cylinder 1 having an annular protrusion therein;

the piston 2 is arranged in the cylinder 1;

the limiting piece 3 is arranged in the cylinder body 1, and a communication channel 10 is arranged between the limiting piece and the inner wall of the cylinder body 1;

and the elastic piece 4 is arranged between the piston 2 and the limiting piece 3, and enables the piston 2 to be abutted against the annular protrusion by means of the elasticity of the elastic piece to form sealing contact.

As for the vacuum breaking device disclosed in the above embodiments, as those skilled in the art can easily understand, the cylinder 1 is connected to the hydraulic dynamometer 9, when negative pressure is generated in the working chamber of the hydraulic dynamometer 9, the external atmosphere can push the piston 2 to compress the elastic member 4 to move in the direction away from the annular protrusion, so that the piston 2 is separated from the annular protrusion, and the external air can enter the cylinder 1 from the gap between the piston 2 and the annular protrusion, and then enter the working chamber through the communication channel 10, so that the pressure of the working chamber is recovered; when pressure resumes to can be balanced with external atmosphere in the working chamber, elastic component 4 relies on its elastic force that is compressed to produce to make piston 2 move to annular protrusion direction, until piston 2 and annular protrusion butt, resume to piston 2 and the convex sealed contact state of annular, make 1 inside and external isolation of barrel.

The vacuum breaking device disclosed by the embodiment has the advantages of fewer components, difficulty in being influenced by water scaling, simple structure and easiness in disassembly and assembly and maintenance.

In some alternative embodiments, a sealing ring 5 is further included, arranged between the piston 2 and the annular projection.

In some alternative embodiments, the piston 2 has a ring groove in which the sealing ring 5 is clamped.

In some alternative embodiments, the limiting member 3 has a through hole;

the vacuum breaking device also comprises a connecting rod 6, one end of which is connected with the piston 2, and the other end of which is arranged in the through hole.

For the vacuum breaking device disclosed in the above embodiments, it is easily understood by those skilled in the art that the piston 2 can drive the connecting rod 6 to move synchronously, and one end of the connecting rod 6 is disposed in the through hole on the limiting member 3, so as to ensure the moving direction of the piston 2 and stabilize the movement of the piston 2.

In some optional embodiments, a plurality of strip-shaped grooves 11 are axially formed in the outer surface of the connecting rod 6 at one end of the through hole, so that the contact area between the connecting rod 6 and the wall surface of the through hole after scale attachment can be effectively reduced, and the connecting rod 6 is prevented from being clamped.

In some optional embodiments, the device further comprises a push rod 7, one end of which passes through the middle part of the annular protrusion to be connected with the piston 2, and the other end of which extends out of the cylinder body 1.

As for the vacuum breaking device disclosed in the above embodiments, it is easily understood by those skilled in the art that after the scale is attached to the end of the connecting rod 6 located in the through hole, the connecting rod 6 can be directly driven to move by pushing and rotating the push rod 7, so that friction is generated between the connecting rod 6 and the wall surface of the through hole, and the scale on the connecting rod 6 falls off and is discharged along the strip-shaped groove 11

In some alternative embodiments, the elastic member 4 is a spring, and is sleeved on the connecting rod 6.

In some alternative embodiments, the inner wall of the cylinder 1 has an annular groove;

the device also comprises a limiting ring 8, wherein the limiting ring 8 is clamped in the annular groove; the elastic member makes the limiting member 3 abut against the limiting ring 8 by means of the elastic force of the elastic member.

In some alternative embodiments, the barrel 1 is externally threaded for threaded engagement with the hydraulic dynamometer 9.

So far, the technical solutions of the present application have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present application is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the present application, and the technical scheme after the changes or substitutions will fall into the protection scope of the present application.

Claims

1. A vacuum breaking apparatus, comprising:

a cylinder (1) having an annular protrusion therein;

the piston (2) is arranged in the cylinder (1);

the limiting piece (3) is arranged in the cylinder body (1), and a communication channel (10) is arranged between the limiting piece and the inner wall of the cylinder body (1);

and the elastic piece (4) is arranged between the piston (2) and the limiting piece (3), and the piston (2) is abutted against the annular protrusion by virtue of the elasticity of the elastic piece to form sealing contact.

2. The vacuum breaking apparatus according to claim 1,

the piston is characterized by further comprising a sealing ring (5) arranged between the piston (2) and the annular protrusion.

3. The vacuum breaking apparatus according to claim 2,

the piston (2) is provided with an annular clamping groove, and the sealing ring (5) is clamped in the annular clamping groove.

4. The vacuum breaking apparatus according to claim 3,

the limiting piece (3) is provided with a through hole;

the vacuum breaking device also comprises a connecting rod (6), one end of the connecting rod is connected with the piston (2), and the other end of the connecting rod is arranged in the through hole.

5. The vacuum breaking apparatus according to claim 4,

the outer surface of the connecting rod (6) at one end of the through hole is provided with a plurality of strip-shaped grooves (11) along the axial direction.

6. The vacuum breaking apparatus according to claim 5,

the piston type piston cylinder is characterized by further comprising a push rod (7), one end of the push rod penetrates through the middle part of the annular protrusion to be connected with the piston (2), and the other end of the push rod extends out of the cylinder body (1).

7. The vacuum breaking apparatus according to claim 4,

the elastic piece (4) is a spring and is sleeved on the connecting rod (6).

8. The vacuum breaking apparatus according to claim 1,

the inner wall of the cylinder body (1) is provided with an annular groove;

the anti-theft device further comprises a limiting ring (8), wherein the limiting ring (8) is clamped in the annular groove; the elastic piece enables the limiting piece (3) to be abutted against the limiting ring (8) by means of elastic force of the elastic piece.

9. The vacuum breaking apparatus according to claim 1,

the cylinder body (1) is provided with an external thread for being in threaded fit connection with the hydraulic dynamometer (9).