CN218625961U - Double-sealing external pressure axial corrugated sleeve compensator - Google Patents

Abstract

A double-sealing external pressure axial corrugated sleeve compensator is characterized in that one end of a flow guide sleeve is connected with an inlet end connecting pipe, and the other end of the flow guide sleeve extends into an outlet end connecting pipe; the inlet end ring is arranged between the inlet end connecting pipe and the outer sleeve; the guide ring, the corrugated pipe I, the corrugated pipe II and the outlet end ring are all sleeved on the outlet end joint pipe and are positioned between the outer sleeve and the outlet end joint pipe, two ends of the corrugated pipe are respectively connected with the corrugated pipe I and the corrugated pipe II, and the other ends of the corrugated pipe I and the corrugated pipe II are respectively connected with the guide ring and the outlet end ring; the packing flange and the compression flange are sleeved on the outlet end connecting pipe, one end of the compression flange extends into the packing flange, the outer wall of the outlet end connecting pipe, the inner wall of the packing flange, the end face of the outlet end ring and the end face of one end, extending into the packing flange, of the compression flange form a sealing cavity, and sealing packing is arranged in the sealing cavity. The utility model has the advantages of double seal structure, good and stable sealing performance, low cost, long service life and maintainability.

Description

Double-sealing external pressure axial corrugated sleeve compensator

Technical Field

The utility model relates to a be applied to the compensation arrangement of heat supply network engineering pipeline, specifically be a dual seal external pressure axial type ripple sleeve compensator.

Background

Along with the continuous deepening of urban heat supply pipe networks in China, cities, towns and areas needing centralized heat supply are increasingly increased, the requirement of residents on heat supply is higher and higher, the defects of the traditional heat supply pipe corrugated compensator and the sleeve compensator are gradually revealed, and therefore relevant workers are required to innovate the compensator technology of heat supply pipe pipelines in time, the reasonable application of the heat supply pipe corrugated compensator can improve the quality and efficiency of heat supply work to a great extent, the satisfaction degree of residents on heat supply work is improved, and the harmonious development of the society is promoted. The existing compensation devices usually comprise a corrugated compensator, a sleeve compensator, a rotary compensator and the like, and because the medium conveyed by a pipeline generally has certain temperature and pressure, the compensation devices have high requirements, and the corrugated compensator has the advantages of stability and difficult damage. The defects are that leakage can not occur when the pipeline is not damaged, the service life of a product can not be known in time, and the pipeline can not be maintained after being damaged, if one heat supply pipeline is damaged by the corrugated compensator in cold winter, the whole pipeline network is shut down, and inconvenience in life can be brought to users and residents. The sleeve compensator has the advantages of low manufacturing cost, safety, stability and maintainability. The disadvantages are that: the traditional sleeve compensator is worn and ablated by sealing filler in the operation process due to the relative movement between an outer sleeve and an inner pipe, so that the volume of sealing material is reduced, and the whole sleeve compensator is unsealed and leaks.

Chinese patent CN 106641546A discloses a direct-buried combined type sleeve compensator, which comprises an end pipe, a telescopic pipe and a sealing filler, wherein corrugated pipes are arranged at the peripheries of the end pipe and the telescopic pipe, an outer sleeve is arranged at the periphery of the corrugated pipe, fixed end plates connected to the end pipe and the outer sleeve and a sliding end plate connected to the telescopic pipe are respectively arranged at two ends of the corrugated pipe, a sealing chamber is formed in an inner cavity of the corrugated pipe, and a ground monitoring connecting pipe communicated with the inner cavity of the corrugated pipe is arranged on the fixed end plate. Such a sleeve compensator has the following problems:

1. because the sealing chamber is arranged in the corrugated pipe, once the sealing chamber leaks, the sealing chamber cannot be repaired, the operation of the pipeline can only be stopped to replace the compensator, and once the pipeline is stopped, certain economic loss can be caused to users of heat pipe network pipeline engineering;

2. because the sealing chamber is arranged in the corrugated pipe, the drift diameter of the corrugated pipe is larger, and further the drift diameter of the outer sleeve is correspondingly increased, so that the manufacturing material of the whole compensator is increased, and the production cost of the whole compensator is increased;

3. because only one sealing is needed, the sealing performance is difficult to effectively ensure.

Disclosure of Invention

The utility model provides a problem that above-mentioned prior art exists that the utility model provides a double seal external pressure axial type ripple sleeve compensator that sealing performance is good, with low costs.

The double-seal external pressure axial corrugated sleeve compensator comprises an inlet end joint pipe, an inlet end ring, a flow guide sleeve, a guide ring, a corrugated pipe I, a corrugated pipe, an outlet end joint pipe, a corrugated pipe II, an outlet end ring, a limiting pull rod, a nut, an ear plate, a packing flange and a pressing flange; one end of the flow guide sleeve is connected with the inlet end connecting pipe, and the other end of the flow guide sleeve extends into the outlet end connecting pipe; the inlet end ring is arranged between the inlet end connecting pipe and the outer sleeve; the guide ring, the corrugated pipe I, the corrugated pipe II and the outlet end ring are all sleeved on the outlet end joint pipe and are positioned between the outer sleeve and the outlet end joint pipe, two ends of the corrugated pipe are respectively connected with the corrugated pipe I and the corrugated pipe II, and the other ends of the corrugated pipe I and the corrugated pipe II are respectively connected with the guide ring and the outlet end ring; the packing flange and the compression flange are sleeved on the outlet end connecting pipe, one end of the compression flange extends into the packing flange, the outer wall of the outlet end connecting pipe, the inner wall of the packing flange, the end face of the outlet end ring and the end face of one end of the compression flange extending into the packing flange form a sealing cavity, and sealing packing is arranged in the sealing cavity.

As a further improvement, the compensator also comprises a sealing filler filling device arranged on the filler flange, and the sealing filler can be added in time when the sealing filler is worn and ablated due to long-term use so that the volume of the sealing material is reduced, so that the sealing performance of the whole sleeve compensator is ensured.

As a further improvement, the compensator also comprises a rib plate, wherein the bottom of the rib plate is connected with the inlet end connecting pipe, and the side edge of the rib plate is connected with the inlet end connecting pipe, so that the strength of the whole compensator structure is improved.

As a further technical improvement, the packing flange is connected with the compression flange through a plurality of groups of compression bolts, when the sealing packing is worn and ablated due to long-term use, so that the volume of the sealing material is reduced, the compression bolts can be further screwed, so that the compression flange further extends into the packing flange, the volume of a sealing cavity is reduced, and the sealing performance of the whole sleeve compensator is ensured not to be reduced.

The multiple groups of compression bolts are preferably uniformly distributed along the outer circumference of the compression flange.

The utility model discloses double sealing's principle is:

because two ends of the corrugated pipe are respectively connected with the corrugated pipe I and the corrugated pipe II, and the two corrugated pipes are respectively connected with the guide ring and the outlet end ring, when a medium in the pipeline enters a space between the corrugated pipe and the outer sleeve, the medium can be blocked outside the corrugated pipe, and thus a first seal is formed. The outer wall of the outlet end connecting pipe, the inner wall of the packing flange, the end face of the outlet end ring and the end face of one end, extending into the packing flange, of the pressing flange form a sealing cavity for a second seal, and the medium entering the corrugated pipe can be effectively blocked.

The utility model has the advantages of as follows and progress:

the sealing structure has a double sealing structure, the sealing performance is good and stable, and the service life can reach more than 50 years;

2. the production raw materials are saved, and the cost is low;

3. by the filler filling device, the sealing filler can be added into the sealing cavity when the sealing performance is reduced, so that the compensator has maintainability, and the phenomenon that the compensator cannot work when the sealing performance is reduced or leakage occurs to cause pipeline shutdown can be effectively prevented;

4. the packing flange and the compression flange are connected through the multiple groups of compression bolts, so that when the sealing packing is worn and ablated due to long-term use and the volume of a sealing material is reduced, the compression bolts are further screwed to enable the compression flange to further extend into the packing flange, the volume of a sealing cavity is reduced, and the sealing performance of the whole sleeve compensator is not reduced.

Drawings

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

FIG. 2 is a partial enlarged view of portion A in FIG. 1

In fig. 1, → indicates a medium flow direction.

The reference numerals in fig. 1-2 correspond to the following components:

1-inlet end connecting pipe, 2-rib plate, 3-inlet end ring, 4-flow guide sleeve, 5-guide ring, 6-corrugated pipe I, 7-corrugated pipe, 8-outer sleeve, 9-outlet end connecting pipe, 10-corrugated pipe II, 11-outlet end ring, 12-limiting pull rod, 13-nut, 14-ear plate, 15-sealing cavity, 16-sealing filler filling device, 17-filler flange, 18-pressing flange and 19-pressing bolt.

Detailed Description

Referring to the drawings, the double-seal external pressure axial corrugated sleeve compensator comprises an inlet end connecting pipe (1), a rib plate (2), an inlet end ring (3), a guide sleeve (4), a guide ring (5), a corrugated pipe I (6), a corrugated pipe (8), an outlet end connecting pipe (9), a corrugated pipe II (10), an outlet end ring (11), a limiting pull rod (12), a nut (13), an ear plate (14), a sealing filler filling device (16), a filler flange (17), a pressing flange (18) and a pressing bolt (19). One end of the flow guide sleeve (4) is connected with the inlet end connecting pipe (1), and the other end of the flow guide sleeve extends into the outlet end connecting pipe (9); the inlet end ring (3) is arranged between the inlet end connecting pipe (1) and the outer sleeve (8); the bottom of the rib plate (2) is connected with the inlet end connecting pipe (1), and the side edge of the rib plate is connected with the inlet end ring (3); the guide ring (5), the corrugated pipe I (6), the corrugated pipe (7), the corrugated pipe II (10) and the outlet end ring (11) are all sleeved on the outlet end connecting pipe (9) and are positioned between the outer sleeve (8) and the outlet end connecting pipe (9), two ends of the corrugated pipe (7) are respectively connected with the corrugated pipe I (6) and the corrugated pipe II (10), and the other ends of the corrugated pipe I (6) and the corrugated pipe II (10) are respectively connected with the guide ring (5) and the outlet end ring (11); the packing flange (17) and the compression flange (18) are sleeved on the outlet end connecting pipe (9), one end of the compression flange (18) extends into the packing flange (17), the outer wall of the outlet end connecting pipe (9), the inner wall of the packing flange (17), the end face of the outlet end ring (11) and the end face of one end of the compression flange (18) extending into the packing flange (17) form a sealing cavity (15), and sealing packing is arranged in the sealing cavity (15). The packing flange (17) is connected with the compression flange (18) through a plurality of groups of compression bolts (19), and the groups of compression bolts are uniformly distributed along the outer circumference of the compression flange.

The sealing filler filling device (16) is arranged on the filler flange (17) and is used for filling the sealing filler into the sealing cavity 15 when needed. The sealing filler filling device is the prior art, so the structure is not described in detail.

Claims (5)

1. The utility model provides a double seal external pressure axial type corrugated sleeve compensator which characterized in that: the device comprises an inlet end connecting pipe (1), an inlet end ring (3), a flow guide sleeve (4), a guide ring (5), a corrugated connecting pipe I (6), an outer sleeve (8), an outlet end connecting pipe (9), a corrugated connecting pipe II (10), an outlet end ring (11), a limiting pull rod (12), a nut (13), an ear plate (14), a packing flange (17) and a pressing flange (18); one end of the flow guide sleeve (4) is connected with the inlet end connecting pipe (1), and the other end of the flow guide sleeve extends into the outlet end connecting pipe (9); the inlet end ring (3) is arranged between the inlet end connecting pipe (1) and the outer sleeve (8); the guide ring (5), the corrugated pipe I (6), the corrugated pipe (7), the corrugated pipe II (10) and the outlet end ring (11) are all sleeved on the outlet end connecting pipe (9) and are positioned between the outer sleeve (8) and the outlet end connecting pipe (9), two ends of the corrugated pipe (7) are respectively connected with the corrugated pipe I (6) and the corrugated pipe II (10), and the other ends of the corrugated pipe I (6) and the corrugated pipe II (10) are respectively connected with the guide ring (5) and the outlet end ring (11); the packing flange (17) and the compression flange (18) are sleeved on the outlet end connecting pipe (9), one end of the compression flange (18) extends into the packing flange (17), the outer wall of the outlet end connecting pipe (9), the inner wall of the packing flange (17), the end face of the outlet end ring (11) and the end face of one end of the compression flange (18) extending into the packing flange (17) form a sealing cavity (15), and sealing packing is arranged in the sealing cavity (15).

2. A double seal external pressure axial type bellows sleeve compensator as claimed in claim 1, wherein: the device also comprises a sealing filler filling device (16) arranged on the filler flange (17).

3. The dual seal external pressure axial type bellows compensator of claim 1, wherein: the novel air-conditioning system is characterized by further comprising a rib plate (2), wherein the bottom of the rib plate (2) is connected with the inlet end connecting pipe (1), and the side edge of the rib plate is connected with the inlet end ring (3).

4. A double seal external pressure axial type bellows sleeve compensator as claimed in claim 1, wherein: the packing flange (17) is connected with the compression flange (18) through a plurality of groups of compression bolts (19).

5. A double seal external pressure axial type bellows sleeve compensator of claim 4, wherein: and the groups of compression bolts are uniformly distributed along the outer circumference of the compression flange.

Images