CN220152154U

CN220152154U - Piston type compensator

Info

Publication number: CN220152154U
Application number: CN202321654789.3U
Authority: CN
Inventors: 袁文宝; 沐爱军
Original assignee: JIANGSU HUIXIN RIPPLE PIPES CO LTD
Current assignee: JIANGSU HUIXIN RIPPLE PIPES CO LTD
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2023-12-08
Anticipated expiration: 2033-06-28

Abstract

The utility model relates to the technical field of compensators, in particular to a piston type compensator which comprises a sleeve, wherein a plurality of groups of fixed rings are arranged on the outer side of the sleeve, the plurality of groups of fixed rings are connected through fixed rods, a cylinder cover is arranged on the right side of the sleeve, a first spring is arranged in the sleeve and positioned on one side close to the cylinder cover, the first spring is connected with a second spring through a piston rod, a first piston is arranged on the outer side of the piston rod and positioned on one side close to the first spring, a second piston is arranged on the outer side of the piston rod and positioned on one side close to the second spring, and a first nut is arranged on the outer side of the piston rod and positioned on one side close to the second piston.

Description

Piston type compensator

Technical Field

The utility model relates to the technical field of compensators, in particular to a piston type compensator.

Background

Expansion joints are also conventionally known as compensators, or telescopic joints; the corrugated pipe comprises a corrugated pipe and accessories such as an end pipe, a bracket, a flange, a conduit and the like which form a working main body of the corrugated pipe; the expansion joint is a flexible structure arranged on the container shell or the pipeline for compensating additional stress caused by temperature difference and mechanical vibration; the effective expansion and contraction deformation of the corrugated pipe of the working main body is utilized to absorb the dimensional changes of pipelines, ducts, containers and the like caused by expansion with heat and contraction with cold or compensate the axial, transverse and angular displacement of the pipelines, ducts, containers and the like; the heat-insulating pipe can also be used for noise reduction, vibration reduction and heat supply, and in order to prevent the pipeline from deforming or being damaged due to thermal elongation or temperature stress when the heat-insulating pipe is heated, a compensator is required to be arranged on the pipeline to compensate the thermal elongation of the pipeline, so that the stress of the pipe wall and acting force acting on a valve element or a support structure are reduced, and the heat-insulating pipe is widely used in the industry at present;

the expansion and contraction phenomenon of the pipeline is generated due to temperature change, the pipeline is expanded and deformed when being heated, and broken when being contracted when being cooled, and in order to avoid the phenomenon, a compensator is required to be arranged on the heating pipeline and is an accessory for counteracting the expansion or shortening of the pipeline due to the temperature change; the sealing structure of the existing heat pipeline compensator generally comprises a sliding flange, a pressing ring and a rubber sleeve, only one sealing structure is adopted, and once the rubber sleeve is aged and damaged, the sealing is invalid, so that the service life is short; moreover, the concentricity of the sleeve and the telescopic rod cannot be ensured by the traditional thermal compensator, so that the outer wall of a certain angle of the telescopic rod can squeeze the rubber sleeve, and the rubber sleeve is irregularly deformed to cause sealing failure;

the patent document No. CN202120938519.X discloses a piston type sleeve compensation joint, which mainly comprises guide support rings respectively arranged at the upper end part and the lower end part of the inner wall of a sealing sleeve, so that concentricity of a telescopic rod and a sleeve can be effectively ensured, and the problem that the outer wall of a certain angle of the telescopic rod can squeeze a rubber sleeve to cause irregular deformation of the rubber sleeve to cause sealing failure due to stress generated by non-concentricity is avoided; and the slip between telescopic link and the sleeve is more steady can be guaranteed to the direction support ring, does not have hard contact between telescopic link and the sleeve, has effectively avoided telescopic link fish tail telescopic inner wall, and shortcoming lies in: when the fire is large, the heat is increased, so that the pressure applied to the compensator is increased, and the compensator is damaged due to the low pressure compensation capability of the compensator, so that the novel piston type compensator is designed to change the technical defects and improve the practicability of the integral piston type compensator.

Disclosure of Invention

The present utility model is directed to a piston compensator for solving the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a piston compensator, includes the sleeve, telescopic outside is provided with a plurality of groups solid fixed ring, and a plurality of groups gu connect through the dead lever between the fixed ring, telescopic right side is provided with the cover, telescopic inside just is located one side that is close to the cover and is provided with first spring, first spring is connected with the second spring through the piston rod, the outside of piston rod just is located one side that is close to first spring and is provided with first piston, the outside of piston rod just is located one side that is close to the second spring and is provided with the second piston, first piston and second piston all are connected with the piston rod through the nut.

In a preferred embodiment of the present utility model, the cylinder cover is connected to the sleeve by a bolt, and a sealing gasket is provided on a contact surface between the cylinder cover and the sleeve.

As a preferred embodiment of the present utility model, the fixing rod is fixed between two sets of fixing rings by bolts.

As a preferable scheme of the utility model, the first spring, the piston rod, the second spring, the first piston, the second piston and the two groups of nuts are of symmetrical structural design, and the outer structural sizes of the first piston and the second piston are correspondingly arranged with the inner structural size of the sleeve.

As a preferable scheme of the utility model, the contact surface of the outer side of the first piston and the inner wall of the sleeve is respectively provided with a first check ring and a first O-shaped ring, and the contact surface of the outer side of the second piston and the inner wall of the sleeve is respectively provided with a second check ring and a second O-shaped ring.

As a preferable scheme of the utility model, threaded columns are arranged on the front side and the rear side of the piston rod and on the inner sides of the two groups of nuts, threaded holes are formed in the threaded columns, and screw rods are arranged in the threaded holes.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, through the design of the first piston, the first spring, the second piston and the second spring, the first piston and the second piston divide the sleeve into three cavities which are sealed with each other, so that the sealing stability is good, the operation is stable, the telescopic rod can be effectively prevented from scratching the inner wall of the sleeve, the service life is long, the processing and the installation are convenient, the distance between the first piston and the second piston is larger than the working displacement of the piston rod, meanwhile, the first spring and the second spring provide a lasting pressure, and the pressure in the compensator is ensured to be always larger than the external air pressure.

2. According to the utility model, through the design of the first check ring, the first O-shaped ring, the second check ring and the second O-shaped ring, the first check ring and the second check ring are suitable for the high-pressure sealing working condition in the sleeve, and especially when the telescopic rod slides in the sleeve, the instantaneous pressure increase occurs, and the first O-shaped ring and the second 0-shaped ring can better play a role in sealing.

Drawings

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

FIG. 2 is a split view of the overall structure of the present utility model;

fig. 3 is an enlarged schematic view of the structure of the present utility model a.

In the figure: 1. a sleeve; 2. a fixing ring; 3. a fixed rod; 4. a cylinder cover; 5. a first spring; 6. a piston rod; 601. a threaded column; 7. a second spring; 8. a first piston; 801. a first retainer ring; 802. a first O-ring; 9. a second piston; 901. the second check ring; 902. a second O-ring; 10. and (3) a nut.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.

In order that the utility model may be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are, however, not limited to the embodiments described herein, but are to be provided for the purpose of making the disclosure of the utility model more thorough.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model, with the term "and/or" as used herein including any and all combinations of one or more of the associated listed items.

Examples

Referring to fig. 1-3, the present utility model provides a technical solution:

the utility model provides a piston compensator, including sleeve 1, sleeve 1's outside is provided with a plurality of fixed rings 2 of group, connect through dead lever 3 between a plurality of fixed rings 2 of group, sleeve 1's right side is provided with cover 4, sleeve 1's inside just is located one side that is close to cover 4 and is provided with first spring 5, first spring 5 is connected with second spring 7 through piston rod 6, piston rod 6's outside just is located one side that is close to first spring 5 and is provided with first piston 8, piston rod 6's outside just is located one side that is close to second spring 7 and is provided with second piston 9, first piston 8 and second piston 9 all are connected with piston rod 6 through nut 10.

Referring to fig. 1-3, when the piston compensator is used, threaded columns 601 are respectively arranged on the front side and the rear side of a piston rod 6 and on the inner sides of two groups of nuts 10, threaded holes are respectively formed in the threaded columns 601, threaded rods are respectively arranged in the threaded holes, the first spring 5, the piston rod 6, the second spring 7, the first piston 8, the second piston 9 and the two groups of nuts 10 are respectively in symmetrical structural design, the outer structural sizes of the first piston 8 and the second piston 9 are correspondingly arranged with the inner structural sizes of a sleeve 1, the first piston 8 and the second piston 9 are firstly arranged on the threaded columns 601 on the two sides of the piston rod 6, the first piston 8 and the second piston 9 are limited and fixed through the nuts 10, the stability of the nuts 10 is improved when the threaded rods are implanted into the threaded holes, the fixing of the first piston 8 and the second piston 9 is more firm, at this time, the first spring 5 and the second spring 7 are respectively fixed on the first piston 8 and the second piston 9, finally, the piston rod 6 is implanted into the sleeve 1, the cylinder cover 4 is connected with the sleeve 1 through a bolt, the contact surface between the cylinder cover 4 and the sleeve 1 is provided with a sealing gasket, the cylinder cover 4 is fixed with the sleeve 1 through a raised screw, the fixed rod 3 is fixed between two groups of fixed rings 2 through a bolt, the connection condition of the fixed rings 2 and the fixed rod 3 is detected and then put into use, when in use, the first piston 8 and the second piston 9 divide the sleeve 1 into three cavities which are sealed with each other, the sealing stability is improved, the telescopic rod is effectively prevented from scratching the inner wall of the sleeve 1, the service life is prolonged, the processing and the installation are convenient, the distance between the first piston 9 and the second piston 9 is larger than the working displacement of the piston rod 6, meanwhile, the first spring 5 and the second spring 7 provide a lasting pressure, ensuring that the pressure in the compensator is always greater than the ambient air pressure.

Referring to fig. 2 and 3, when the piston compensator is used, the contact surface of the outer side of the first piston 8 and located on the inner wall of the sleeve 1 is respectively provided with a first check ring 801 and a first O-ring 802, the contact surface of the outer side of the second piston 9 and located on the inner wall of the sleeve 1 is respectively provided with a second check ring 901 and a second O-ring 902, the first check ring 801 and the first O-ring 802 are both sleeved on the first piston 8, the first check ring 801 is sleeved on the outer side of the first O-ring 802, the second check ring 901 and the second O-ring 902 are both sleeved on the second piston 9, the second check ring 901 is sleeved on the outer side of the second O-ring 902, the first check ring 801 and the second check ring 901 are suitable for high-pressure sealing conditions inside the sleeve 1, and especially when the telescopic rod slides in the sleeve 1, the first O-ring 802 and the second O-ring 0 can better play a role in sealing.

The working flow of the utility model is as follows: when the piston compensator is used, the first check ring 801 and the first O-shaped ring 802 are sleeved on the first piston 8, the first check ring 801 is sleeved on the outer side of the first O-shaped ring 802, the second check ring 901 and the second O-shaped ring 902 are sleeved on the second piston 9, the second check ring 901 is sleeved on the outer side of the second O-shaped ring 902, the first piston 8 and the second piston 9 are firstly arranged on threaded columns 601 on two sides of the piston rod 6, the first piston 8 and the second piston 9 are limited and fixed through nuts 10, the stability of the nuts 10 is improved when the screws are implanted into threaded holes, the first piston 8 and the second piston 9 are firmly fixed, at the moment, the first springs 5 and the second springs 7 are respectively fixed on the first piston 8 and the second piston 9, finally the piston rod 6 is implanted into the sleeve 1, the sleeve cover 4 is improved to be fixed with the sleeve 1, the connection condition of the fixed ring 2 is detected, and then the compensator is put into use.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A piston compensator comprising a sleeve (1), characterized in that: the outside of sleeve (1) is provided with a plurality of solid fixed ring (2), and a plurality of groups gu connect through dead lever (3) between fixed ring (2), the right side of sleeve (1) is provided with cover (4), the inside of sleeve (1) just is located one side that is close to cover (4) and is provided with first spring (5), first spring (5) are connected with second spring (7) through piston rod (6), the outside of piston rod (6) just is located one side that is close to first spring (5) and is provided with first piston (8), the outside of piston rod (6) just is located one side that is close to second spring (7) and is provided with second piston (9), first piston (8) and second piston (9) all are connected with piston rod (6) through nut (10).

2. A piston compensator according to claim 1, characterized by: the cylinder cover (4) is connected with the sleeve (1) through bolts, and a sealing gasket is arranged on the contact surface of the cylinder cover (4) and the sleeve (1).

3. A piston compensator according to claim 1, characterized by: the fixing rod (3) is fixed between the two groups of fixing rings (2) through bolts.

4. A piston compensator according to claim 1, characterized by: the novel piston is characterized in that the first spring (5), the piston rod (6), the second spring (7), the first piston (8), the second piston (9) and the two groups of nuts (10) are of symmetrical structural design, and the outer structural sizes of the first piston (8) and the second piston (9) are correspondingly arranged with the inner structural size of the sleeve (1).

5. A piston compensator according to claim 1, characterized by: the contact surface of the outer side of the first piston (8) and the inner wall of the sleeve (1) is respectively provided with a first check ring (801) and a first O-shaped ring (802), and the contact surface of the outer side of the second piston (9) and the inner wall of the sleeve (1) is respectively provided with a second check ring (901) and a second O-shaped ring (902).

6. A piston compensator according to claim 1, characterized by: screw thread posts (601) are arranged on the front side and the rear side of the piston rod (6) and located on the inner sides of the two groups of nuts (10), threaded holes are formed in the screw thread posts (601), and screw rods are arranged in the threaded holes.