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

Abstract

A double-seal external pressure axial corrugated sleeve compensator, one end of the diversion sleeve is connected to the inlet end pipe, and the other end extends into the outlet end pipe; the inlet end ring is arranged between the inlet end pipe and the outer casing; the guide ring, Corrugated pipe I, bellows, corrugated pipe II, and outlet end ring are all sleeved on the outlet end pipe, and are located between the outer sleeve and the outlet end pipe. The other ends of the connecting pipe I and the wave connecting pipe II are respectively connected with the guide ring and the outlet end ring; the packing flange and the compression flange are both sleeved on the outlet end connection pipe, and one end of the compression flange extends into the packing flange. The outer wall of the outlet connecting pipe, the inner wall of the packing flange, the end face of the outlet ring and the end face of the compression flange extending into the packing flange form a sealed cavity, and a sealing packing is arranged in the sealed cavity. The utility model has a double sealing structure, good and stable sealing performance, low cost, long service life, maintainability and the like.

Description

A Double Seal External Pressure Axial Bellows Sleeve Compensator

technical field

The utility model relates to a compensation device applied to heating network engineering pipelines, in particular to a double-seal external pressure axial type corrugated sleeve compensator.

Background technique

With the continuous deepening of my country's urban heating pipe network, more and more towns and regions need centralized heating, and residents' requirements for heating are getting higher and higher. It is also gradually revealed, which requires the relevant staff to innovate the compensator technology of the heating network pipeline in a timely manner, and the reasonable use of the heating network pipeline compensator can greatly improve the quality and efficiency of heating work, and improve the quality of residents. Satisfaction with heating work, thereby promoting the harmonious development of society. Existing compensation devices usually include corrugated compensators, sleeve compensators, rotary compensators, etc. Since the medium conveyed by pipelines generally has a certain temperature and pressure, there are high requirements for compensating devices. The advantages of corrugated compensators are: Stable and not easily damaged. The disadvantage is that there will be no leakage when it is not damaged, and the product life cannot be known in time, and it cannot be repaired after damage. If a heating pipeline is damaged due to the damage of the corrugated compensator in the cold winter, the entire pipeline network is out of service, and it will cause serious damage to other pipelines. Users and residents bring inconvenience to life. The advantages of the sleeve compensator are low cost, safety and stability, and maintainability. The disadvantages are: due to the relative movement between the outer sleeve and the inner tube of the traditional sleeve compensator, the wear and ablation of the sealing packing during operation will reduce the volume of the sealing material, and the entire sleeve compensator will not be sealed and will leakage.

Chinese patent CN 106641546A discloses a direct-buried composite sleeve compensator, including end pipes, telescopic pipes and sealing fillers, bellows are arranged on the periphery of the end pipes and telescopic pipes, and there are outer sleeves on the periphery of the bellows. There are fixed end plates connected to the end pipe and the outer sleeve and sliding end plates connected to the telescopic tube respectively at both ends of the bellows. Ground monitoring tube. This sleeve compensator has the following problems:

1. Since the sealing chamber is set in the bellows, once the sealing chamber leaks, it cannot be repaired, and the operation of the pipeline can only be stopped to replace the compensator. Once the pipeline is stopped, it will cause certain economic losses to the users of the heating network pipeline project. loss;

2. Since the sealing chamber is set in the bellows, the diameter of the bellows is larger, and the diameter of the outer sleeve is also increased accordingly, resulting in an increase in the production materials of the entire compensator, thereby increasing the production cost of the entire compensator ;

3. Since there is only one seal, it is difficult to effectively guarantee the sealing performance.

Contents of the invention

The utility model aims to solve the problems in the above-mentioned prior art, and provides a double-seal external pressure axial corrugated sleeve compensator with excellent sealing performance and low cost.

The dual-seal external pressure axial corrugated sleeve compensator described in this application includes an inlet end pipe, an inlet end ring, a guide sleeve, a guide ring, a corrugated pipe I, a bellows, an outlet end pipe, a corrugated pipe II, an outlet end ring, Limiting rods, nuts, lug plates, packing flanges, and compression flanges; one end of the diversion sleeve is connected to the inlet end pipe, and the other end extends into the outlet end pipe; the inlet end ring is set between the inlet end pipe and the outer casing ; The guide ring, corrugated pipe I, bellows, corrugated pipe II, and outlet end ring are all sleeved on the outlet end pipe, located between the outer sleeve and the outlet end pipe, and the two ends of the bellows are connected to the corrugated pipe I and the corrugated pipe II respectively. The other ends of the wave connection I and wave connection II are respectively connected with the guide ring and the outlet end ring; the packing flange and the compression flange are both sleeved on the outlet end connection pipe, and one end of the compression flange extends into the packing In the flange, the outer wall of the outlet pipe, the inner wall of the packing flange, the end face of the outlet ring and the end face of the compression flange extending into the packing flange form a sealed cavity, and a sealing packing is arranged in the sealed cavity.

As a further improvement, it also includes a sealing packing filling device arranged on the packing flange. When the sealing packing is worn and ablated due to long-term use, and the volume of the sealing material is reduced, the sealing packing can be added in time to ensure that the entire sleeve The sealing performance of the compensator.

As a further improvement, ribs are also included, the bottom of the ribs is connected to the inlet end pipe, and the side is connected to the inlet end ring, so as to improve the strength of the entire compensator structure.

As a further technical improvement, the packing flange and the compression flange are connected by multiple sets of compression bolts. When the sealing packing is worn and ablated due to long-term use, and the volume of the sealing material is reduced, the compression bolts can be further tightened. , so that the compression flange is further extended into the packing flange to reduce the volume of the sealing cavity to ensure that the sealing performance of the entire sleeve compensator does not decrease.

The multiple sets of compression bolts are preferably evenly distributed along the outer circumference of the compression flange.

The principle of double sealing of the utility model is:

Since the two ends of the bellows are respectively connected to the bellows I and II, and the two bellows are respectively connected to the guide ring and the outlet ring, when the medium in the pipeline enters the space between the bellows and the outer sleeve, it will be blocked On the outside of the bellows, this forms the first seal. The outer wall of the outlet connecting pipe, the inner wall of the packing flange, the end face of the outlet end ring and the end face of the compression flange extending into the end face of the packing flange form a second seal, which can form an effective seal for the medium entering the bellows. blocking.

The utility model has the following advantages and progress:

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

2. Saving raw materials and low cost;

3. Through the packing filling device, sealing packing can be added to the sealing chamber when the sealing performance decreases, so that the compensator is maintainable, and it can effectively prevent the compensator from failing to work when the sealing performance decreases or leakage occurs, resulting in pipeline outage;

4. By connecting the packing flange and the compression flange through multiple sets of compression bolts, when the sealing packing is worn and ablated due to long-term use, and the volume of the sealing material is reduced, the compression bolts can be further tightened to make the compression The tight flange extends further into the stuffing flange to reduce the volume of the sealing cavity, so as to ensure that the sealing performance of the entire sleeve compensator does not decrease.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Figure 2 is a partial enlarged view of part A in Figure 1

In Figure 1, → indicates the flow direction of the medium.

The components corresponding to the reference numerals in Fig. 1-Fig. 2 are as follows:

1-inlet end pipe, 2-rib plate, 3-inlet end ring, 4-drain sleeve, 5-guide ring, 6-wave connection I, 7-corrugated pipe, 8-outer sleeve, 9-outlet end pipe, 10-wave connection II, 11-outlet end ring, 12-limit rod, 13-nut, 14-ear plate, 15-seal cavity, 16-seal packing filling device, 17-packing flange, 18-compression Flange, 19-compression bolt.

Detailed ways

Referring to the accompanying drawings, the double-seal external pressure axial type corrugated sleeve compensator in this embodiment consists of an inlet end pipe (1), a rib plate (2), an inlet end ring (3), a guide sleeve (4), and a guide Ring (5), corrugated tube I (6), bellows (8), outlet port tube (9), corrugated tube II (10), outlet port ring (11), limit rod (12), nut (13) , lug plate (14), sealing packing filling device (16), packing flange (17), compression flange (18), compression bolt (19). One end of the diversion sleeve (4) is connected to the inlet end pipe (1), and the other end extends into the outlet end pipe (9); the inlet end ring (3) is set between the inlet end pipe (1) and the outer casing (8) ;The bottom of the rib plate (2) is connected with the inlet end pipe (1), and the side 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), the outlet end ring (11) is sleeved on the outlet end connecting pipe (9), located between the outer sleeve (8) and the outlet end connecting pipe (9), and the two ends of the bellows (7) are respectively connected to the wave connecting pipe I ( 6) Connect with the wave connection II (10), the other end of the wave connection I (6) and the wave connection II (10) are respectively connected with the guide ring (5) and the outlet end ring (11); the packing flange (17 ) and compression flange (18) are sleeved on the outlet connection pipe (9), one end of the compression flange (18) extends into the packing flange (17), the outer wall of the outlet connection pipe (9), the packing The inner wall of the flange (17), the end face of the outlet end ring (11) and the end face of the compression flange (18) extending into the packing flange (17) form a sealed cavity (15), and the sealed cavity (15) is provided with Seal packing. The packing flange (17) is connected to the compression flange (18) through multiple sets of compression bolts (19), and the above multiple sets of compression bolts are evenly distributed along the outer circumference of the compression flange.

The sealing packing filling device (16) is arranged on the packing flange (17), and is used for filling the sealing packing into the sealing cavity 15 when necessary. The sealing packing filling device is a prior art, so the structure will not be repeated.

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.

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