CN218409009U - An expansion joint for water diversion engineering pipeline - Google Patents

Abstract

The utility model relates to a telescopic joint for water diversion engineering pipelines. One end of the left connecting pipe is inserted and fixed in the left wave connecting pipe, one end of the right connecting pipe is inserted and fixed in the right wave connecting pipe; the mud blocking baffle assembly is sleeved on the left wave connecting pipe , the fixed end plate is set on the right wave connecting pipe, the outer shell is set on the mud baffle assembly and the fixed end plate; the diversion sleeve is arranged between the left connecting pipe and the right connecting pipe, and one end is connected with the left connecting pipe, and the three are coaxial Setting; the bellows is set between the left bellows and the right bellows, and each trough of the bellows is provided with an equalizing ring; the baffle is set at the joint between the left bellows and the bellows, and the fixed end plate is set at Where the right bellows meets the bellows; a strip of foam surrounds each crest of the bellows. The utility model can effectively solve the problems that the bellows in the existing common expansion joints are easily stuck due to the accumulation of impurities such as mud and sand contained in the fluid, and even lose the compensation function, as well as the problems of many welding seams and large processing volume.

Description

An expansion joint for water diversion engineering pipeline

technical field

The utility model relates to an expansion joint used for a water diversion engineering pipeline.

Background technique

As a livelihood project in water conservancy, the water diversion project is related to the domestic water of thousands of households and the industrial water of enterprises. When laying pipelines in water diversion projects, expansion joints are usually arranged between the pipelines at intervals, and the elastic deformation function of the expansion joints is used to absorb the displacement of the pipelines caused by thermal expansion and contraction. Therefore, the expansion joint is an important equipment when laying water diversion engineering pipelines.

Figure 1 shows a common expansion joint in the prior art, which has the following problems:

1. The left straight side reinforcing ring (5) used to strengthen the bellows (8) and the baffle plate (4) used to prevent the telescopic joint from pulling off are set separately, while the bellows (8) The right straight edge reinforcement ring (10) and the fixed end plate (11) that play a reinforcing role are also provided separately, and the aforementioned left straight edge reinforcement ring (5) and the right straight edge reinforcement ring (10) are respectively connected with the left wave connecting pipe (2 ) and the right wave to take over (12) welded. Generally speaking, the entire expansion joint has more welding points, which not only increases the hidden danger of unqualified items of the weld, but also increases the production cost.

2. There is a certain space between the bellows (8) and the guide sleeve (9). When the fluid flows through the expansion joint, part of the fluid will flow from the space between the bellows (8) and the guide sleeve (9). When entering the bellows (8), impurities such as silt and sand in the fluid will accumulate in the bellows. After a long period of time, the bellows are easy to get stuck, which affects the work of the expansion joint, and even causes the expansion joint to lose its compensation function.

Contents of the invention

In order to solve the problems that the bellows in the existing common expansion joints are easily stuck due to the accumulation of impurities such as mud and sand in the fluid, and even lose the compensation function, as well as the problems that there are many welds and a large amount of processing, the utility model provides a A new type of expansion joint for water diversion engineering pipeline.

The telescopic joint used in the water diversion engineering pipeline described in the utility model includes a left connecting pipe, a left wave connecting pipe, a mud-blocking end plate assembly, a baffle plate, a shell, a bellows, a fixed end plate, a right wave connecting pipe, a right connecting pipe and a diversion sleeve , one end of the left connecting pipe is inserted and fixed in the left wave connecting pipe, one end of the right connecting pipe is inserted and fixed in the right wave connecting pipe; The mud blocking end plate and the fixed end plate; the diversion sleeve is arranged between the left connecting pipe and the right connecting pipe, and one end is connected with the left connecting pipe, and the three are coaxially arranged; the bellows is arranged between the left wave connecting pipe and the right wave connecting pipe; Each wave trough of the bellows is provided with an equalizer ring; the baffle is set at the joint between the left wave joint and the bellows, and the fixed end plate is set at the joint between the right wave joint and the bellows; each peak of the bellows All surrounded by foam strips.

As a further improvement, in order to effectively prevent the fluid from entering the bellows from the space between the bellows and the diversion sleeve, thereby reducing the possibility of accumulation of impurities such as mud and sand in the flow fluid in the bellows, the outer wall at the right end of the diversion sleeve A retaining ring is arranged on it.

As a further improvement, the top of the baffle is bent to the right, which can function as a limit and prevent the bellows from being over-compressed.

As a further improvement, the top of the fixed end plate is bent to the left, which can also play a role of limiting and preventing excessive compression of the bellows.

As a further improvement, the top periphery of each balance ring extends outward, and the overall cross-sectional shape is T-shaped. When the bellows are compressed, the tops of two adjacent T-shaped equalizer rings gradually approach each other, and when they are in full contact, the bellows stop compressing, thereby avoiding excessive deformation of the bellows.

As a further improvement, more than two foam strips are provided in each wave crest of the bellows to fill each wave crest cavity of the bellows, so that impurities such as sludge entrained by the fluid can be effectively prevented from accumulating in the bellows. Prevent the bellows from being stuck and failing.

The utility model has the following advantages and technical progress:

1. Combining the baffle plate and the left straight-side reinforcement ring, the fixed end plate and the right straight-side reinforcement ring in the prior art into one, the combined baffle plate and fixed end plate can both be used as reinforcements for the bellows , and as a limit baffle, it can prevent the expansion joint from being pulled out excessively. At the same time, it can reduce the welding seam and shorten the length of the shell, thereby saving the raw materials of the product, reducing the processing amount of the product, and reducing the product cost.

2. Since each wave crest of the bellows is provided with a foam strip, this can prevent the sludge and impurities in the medium from accumulating in the bellows, which will cause the bellows to fail.

3. By setting a retaining ring on the outer wall of the right end of the diversion sleeve, the inflow of sediment in the medium in the bellows can be effectively reduced.

4. By designing the top of the baffle to be bent to the right and the top of the fixed end plate to be bent to the left, when the bellows is compressed, the baffle and the fixed end plate cooperate with the adjacent equalizing ring respectively, which can play a role The bellows is limited so as to protect the bellows.

5. By designing the equalizer ring so that the top periphery protrudes outward, the overall cross-sectional shape is similar to a T shape. When the bellows are compressed, the tops of the two adjacent T-shaped equalizer rings gradually approach each other. When they are in full contact, the bellows The compression is stopped so that excessive deformation of the bellows can be avoided.

Description of drawings

Fig. 1 is the schematic diagram of the expansion joint of prior art;

In Figure 1, 1 is the left connecting pipe, 2 is the left corrugated connecting pipe; 3 is the mud baffle assembly; 4 is the baffle; 5 is the left straight edge reinforcement ring; 6 is the shell; 7 is the equalizer ring; 8 is the bellows ; 9 is a diversion sleeve; 10 is a right straight edge reinforcing ring; 11 is a fixed end plate; 12 is a right wave takeover; 13 is a right takeover.

Fig. 2 is a schematic structural view (half-sectional view) of Embodiment 1 of the utility model.

Fig. 3 is a schematic structural view (half-sectional view) of Embodiment 2 of the present utility model.

In Figure 2 and Figure 3, 1 is the left connecting pipe, 2 is the left wave connecting pipe; 3 is the mud baffle assembly; 4 is the baffle; 5 is the shell; 6 is the bellows; 7 is the equalizer ring; 8 is the foam strip 9 is a fixed end plate; 10 is a right wave takeover; 11 is a retaining ring; 12 is a diversion sleeve; 13 is a right takeover.

Detailed ways

Example 1:

As shown in Figure 2, the expansion joint used in the water diversion engineering pipeline described in this embodiment includes a left connecting pipe (1), a left wave connecting pipe (2), a mud baffle assembly (3), a baffle (4), and a casing (5), bellows (6), fixed end plate (9), right corrugated pipe (10), right pipe (13) and diversion sleeve (12), one end of left pipe (1) is inserted and fixed by welding In the left wave connection pipe (2), one end of the right connection pipe (13) is inserted and fixed in the right wave connection pipe (10) by welding. The mud-resistance end plate assembly (3) is enclosed within on the left wave connection pipe (2), and the fixed end plate (9) is enclosed within on the right wave connection pipe (10), and is welded and fixed with the shell (5) inner wall. The diversion sleeve (12) is arranged between the left connecting pipe (1) and the right connecting pipe (13), and one end is connected to the left connecting pipe (1) by welding, and there is an interval between the other end and the right connecting pipe. axis settings. The bellows (6) is arranged between the left bellows (2) and the right bellows (10), and its two ends are respectively inserted into the left bellows (2) and the right bellows (10) and fixed by welding. Each trough of the bellows (6) is provided with a balance ring (7), the shape of the lower part of the balance ring (7) is adapted to the shape of the trough of the bellows (6), and two foam strips are arranged in each wave crest (8). The baffle (4) is set at the joint between the left bellows (2) and the bellows (6) and welded to the outer wall of the left bellows (2), and the fixed end plate (9) is set at the right bellows (10) and the bellows Pipe (6) joins place, and is welded with the outer wall of right wave to take over (10). A retaining ring (11) is arranged on the outer wall of the right end of the diversion sleeve (12).

Example 2

As shown in Figure 3, the basic structure of Embodiment 2 is the same as that of Embodiment 1, except that the top of the baffle plate (4) is bent to the right, and the fixed end plate (9) is bent to the left, and at the same time, the balance ring (7) The top periphery protrudes outwards, and the overall cross-sectional shape is similar to a T-shape.

Claims (6)

1. An expansion joint for a diversion engineering pipeline comprises a left connecting pipe (1), a left corrugated connecting pipe (2), a mud blocking baffle assembly (3), a baffle (4), a shell (5), a corrugated pipe (6), a fixed end plate (9), a right corrugated connecting pipe (10), a right connecting pipe (13) and a diversion sleeve (12), wherein one end of the left connecting pipe (1) is inserted into and fixed in the left corrugated connecting pipe (2), and one end of the right connecting pipe (13) is inserted into and fixed in the right corrugated connecting pipe (10); the mud blocking baffle plate component (3) is sleeved on the left corrugated connecting pipe (2), the fixed end plate (9) is sleeved on the right corrugated connecting pipe (10), and the shell (5) is sleeved on the mud blocking baffle plate component (3) and the fixed end plate (9); the flow guide sleeve (12) is arranged between the left connecting pipe (1) and the right connecting pipe (13), one end of the flow guide sleeve is connected with the left connecting pipe, and the flow guide sleeve, the left connecting pipe and the right connecting pipe are coaxially arranged; the corrugated pipe (6) is arranged between the left corrugated connecting pipe (2) and the right corrugated connecting pipe (10), and a balance ring (7) is arranged at each wave trough of the corrugated pipe (6); the corrugated pipe is characterized in that the baffle (4) is arranged at the joint of the left corrugated pipe (2) and the corrugated pipe (6), and the fixed end plate (9) is arranged at the joint of the right corrugated pipe (10) and the corrugated pipe (6); a foam strip (8) is surrounded in each wave crest of the corrugated pipe (6).

2. An expansion joint for a water diversion engineering pipeline as claimed in claim 1, characterized in that a retainer ring (11) is arranged on the outer wall of the right end of the diversion sleeve (12).

3. Expansion joint for penstock ducts according to claim 1 or 2, characterized in that the top of the baffle (4) is bent to the right.

4. The telescopic joint for a penstock pipe as in claim 1 or 2, characterized in that the top periphery of the balancing ring (7) extends outwards, the overall cross-sectional shape being T-shaped.

5. The telescopic joint for the water diversion engineering pipeline according to claim 1 or 2, wherein more than two foam strips (8) are arranged in each wave crest of the corrugated pipe (6) to fill each wave crest cavity.

6. Telescopic joint for a penstock line as claimed in claim 1 or 2, characterized in that the top of the fixed end plate (9) is bent to the left.

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