CN216692475U - Pressure-resistant corrugated pipe - Google Patents

Abstract

The utility model discloses a compression-resistant corrugated pipe, which comprises a pipe body, wherein the pipe body comprises a corrugated part and an inner pipe, two obliquely symmetrical reinforcing ribs are arranged in a hollow part between the corrugated part and the inner pipe, a rubber layer is filled in the section between the reinforcing ribs and the corrugated part, end plates are arranged at two ends of the pipe body, a connecting device is fixed on the periphery of each end plate, the corrugated part is formed by arranging a plurality of bulges at equal intervals, the section of each bulge is rectangular, four corners of the rectangle are rounded corners, bosses which are continuously distributed are arranged on the inner wall of the inner pipe, the wall thickness of the inner pipe is greater than that of the corrugated part, the section between the corrugated part and the reinforcing ribs is inverted pentagon, the connecting device comprises a connecting block, an upper chuck and a lower chuck, the upper chuck and the lower chuck are fixedly connected through bolts at two ends, grooves matched with the outer edges of the end plates are arranged on the lower surface of the upper chuck and the upper surface of the lower chuck, and a rubber gasket is arranged between the connecting block and the end plate.

Description

Pressure-resistant corrugated pipe

Technical Field

The utility model relates to a corrugated pipe, in particular to a compression-resistant corrugated pipe.

Background

The corrugated pipe is a tubular elastic sensitive element which is formed by connecting foldable corrugated sheets along the folding and stretching direction. The corrugated pipe has wide application in instruments and meters, and is mainly used as a measuring element of a pressure measuring instrument to convert pressure into displacement or force. The corrugated pipe has thin pipe wall and high sensitivity, and the measurement range is from tens of Pa to tens of MPa. Its open end is fixed, its sealed end is in free state, and its elasticity is increased by using auxiliary helical spring or reed. When working, the pipe is extended along the length direction under the action of internal pressure, so that the movable end generates displacement in a certain relation with the pressure. The movable end drives the pointer to directly indicate the pressure. Bellows are often combined with displacement sensors to form pressure sensors that output an electrical quantity, sometimes also acting as isolation elements. The response speed of the bellows is slower than that of the bourdon tube because of the large volume change required for the expansion of the bellows. The bellows is adapted to measure low pressure. The corrugated pipe is made of polyethylene resin as main raw material, and proper amount of auxiliary agent is added, and the corrugated pipe is extruded and molded, is more and more widely applied, and is gradually applied to buildings, communication and agriculture. Has the advantages of light weight, small resistance, high compressive strength, convenient construction and the like, and is an ideal material for replacing cast iron pipes and cement pipes.

The patent number is CN 208041451U's utility model patent discloses a wear-resisting resistance to compression bellows, including body, connection structure, the body includes the inlayer pipe, outer bellows, strengthening rib, rubber layer, wearing layer, is provided with interior screw thread section near body port department on the inlayer pipe, is provided with the person in charge's end plate on the terminal surface of body, and connection structure includes interior linkage segment, elastic buffer circle, and connection end plate, elastic buffer circle, the person in charge's end plate pass through the bolt and link firmly, and connection end plate, elastic buffer circle, the peripheral cover of the person in charge's end plate put elastic rubber clamp.

The existing corrugated pipe has the following defects: firstly, the integral strength is poor, the bulge is easy to break under extrusion, and the bulge is easy to be worn by the outside after long-term use, so that the service life is greatly reduced; secondly, due to structural reasons, the corrugated pipe has low ring stiffness and relatively poor external pressure load resistance, and the pipe is easy to deform; thirdly, as the corrugated pipe is of a circular structure, a pipe pillow needs to be additionally arranged when the pipe is installed so as to be fixed; fourthly, the pipeline is inconvenient to disassemble and is not convenient to maintain.

SUMMERY OF THE UTILITY MODEL

According to the technical problem that the above-mentioned needs solved, provide a resistance to compression bellows.

In order to achieve the purpose, the compression-resistant corrugated pipe comprises a pipe body, wherein the pipe body comprises a corrugated part and an inner pipe, two obliquely symmetrical reinforcing ribs are arranged in a hollow part between the corrugated part and the inner pipe, a rubber layer is filled in the section between each reinforcing rib and the corresponding corrugated part, the outer wall of each corrugated part is rectangular, end plates are arranged at two ends of the pipe body, and connecting devices are fixed on the periphery of the end plates.

Furthermore, the corrugated part is formed by arranging a plurality of bulges at equal intervals, the C-C section of each bulge is rectangular, and four corners of the rectangle are rounded corners.

Furthermore, bosses which are continuously distributed are arranged on the inner wall of the inner pipe, the cross sections of the bosses are isosceles trapezoids, and the bosses are correspondingly arranged with the positions of wave troughs of the corrugated part.

Still further, the inner tubing wall thickness is greater than the corrugated tubing wall thickness.

Furthermore, the section between the corrugated part and the reinforcing rib is inverted pentagon.

Furthermore, the connecting device comprises a connecting block, an upper chuck and a lower chuck, wherein connecting holes corresponding to each other are formed in the two ends of the upper chuck and the two ends of the lower chuck, and the two ends of the connecting device are fixedly connected through bolts.

Furthermore, the lower surface of the upper chuck and the upper surface of the lower chuck are both provided with semicircular grooves matched with the outer edge of the end plate.

Furthermore, a rubber gasket is arranged between the connecting block and the end plate.

The utility model has the beneficial effects that:

firstly, the outer wall of the corrugated pipe is a square pipe, the inner wall of the corrugated pipe is a round pipe, the compression resistance and the tensile resistance of the square pipe and the round pipe are approximately the same under the same condition, but the bending resistance of the square pipe is better than that of the round pipe; in addition, the boss structures on the inner wall of the inner pipe are correspondingly arranged with the wave trough positions of the corrugated parts, so that the integral ring rigidity of the corrugated pipe is further enhanced, and the service life is prolonged.

Secondly, the corrugated pipe with the square pipe shape is easier to transport and store.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a front view of a pressure resistant bellows according to the present invention.

Fig. 2 is a partial view B-B of the internal structure of a pressure-resistant bellows according to the present invention.

Fig. 3 is an enlarged sectional view a of a compression-resistant bellows joint according to the present invention.

Fig. 4 is a left side view of a compression resistant bellows of the present invention.

Fig. 5 is a cross-sectional view C-C of a pressure resistant bellows according to the present invention.

In the figure: 1 is a boss; 2 is a connecting device; 2-1 is an upper chuck; 2-2 is a lower chuck; 3 is a corrugated part; 4 is an inner tube; 5 is a reinforcing rib; 6 is a connecting block; 7 is a rubber gasket; and 8 is an end plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of the present invention.

As shown in fig. 1 and 2, a compression-resistant corrugated pipe comprises a pipe body, wherein the pipe body comprises a corrugated portion 3 and an inner pipe 4, two obliquely symmetrical reinforcing ribs 5 are arranged in a hollow portion between the corrugated portion 3 and the inner pipe 4, a rubber layer is filled in a section between each reinforcing rib 5 and the corresponding corrugated portion 3, end plates 8 are arranged at two ends of the pipe body 1, a connecting device 2 is fixed on the periphery of each end plate 8, and the reinforcing ribs 5 arranged in the hollow portion between the corrugated portion 3 and the inner pipe 4 can enhance the bearing capacity of a pipeline and improve the ring stiffness of the corrugated pipe.

As shown in fig. 4 and 5, the corrugated portion 3 is formed by arranging a plurality of protrusions at equal intervals, the cross section of each protrusion C-C is rectangular, four corners of the rectangle are fillets, the section of the B-B corrugated portion 3 is trapezoidal, the rectangular outline of the corrugated portion 3 and the trapezoidal cross section of the peak position increase the contact area between the corrugated pipe and the outside, the circular inner wall can be tightly attached to the outer wall of the inner pipe, the integral structure of the inner circle and the outer circle improves the integral ring rigidity and the bending resistance of the corrugated pipe, and the fillet position can prevent the pipeline rupture caused by collision to a certain extent.

As shown in figure 2, bosses 1 which are continuously distributed are arranged on the inner wall of the inner tube 4, the sections of the bosses 1 are isosceles trapezoids, the bosses 1 and the wave troughs of the corrugated part 3 are correspondingly arranged, and the structure further improves the overall ring rigidity of the corrugated tube.

The wall thickness of the inner pipe 4 is larger than that of the corrugated part 3, and the thicker pipe wall can bear more fluid pressure in the pipe.

The cross-section between corrugated portion 3 and the strengthening rib 5 is the pentagon that falls, and strengthening rib 5 is the slope symmetry and sets up in well kenozooecium, and the atress is effectual, and intensity is high, and the rubber layer that sets up in the pentagon that the corrugated portion 3 that the strengthening rib 5 is connected formed rather than has elasticity, can absorb the pressure that receives in outside of the tubes and inner tube 4, and the whole compressive capacity of pipeline is strong, and the pipeline is difficult for breaking increase of service life.

As shown in fig. 3-4, the connecting device 2 comprises a connecting block 6, an upper chuck 2-1 and a lower chuck 2-2, the connecting device 2 is fixed by bolts at two ends, connecting holes corresponding to each other are arranged at two ends of the upper chuck 2-1 and the lower chuck 2-2, semicircular grooves matched with the outer edge of the end plate 8 are arranged on the lower surface of the upper chuck 2-1 and the upper surface of the lower chuck 2-2, the connecting holes can quickly position and fasten the bolts, and the semicircular grooves of the upper and lower chucks cover the end plate 8 and the connecting block 6 to limit circumferential displacement.

A rubber gasket 7 is arranged between the connecting block 6 and the end plate 8, and the sealing performance of the connecting device is improved.

The working principle of the utility model is as follows:

as shown in fig. 3, the connecting device 2 is provided with a connecting block 6, a rubber gasket 7 is arranged between the connecting block 6 and an end plate 8 at a port of the pipe body, the rubber gasket 7 is placed on a corresponding groove of the end plate, when the connecting block 6 on the connecting device 2 is tightly pressed on the end plate 8 on the pipe body through the rubber gasket 7, the axial displacement of the connecting block is limited through semicircular grooves of the upper chuck 2-1 and the lower chuck 2-2, and the radial displacement is limited by fixing the two ends of the upper chuck 2-1 and the lower chuck 2-2 through bolts, so that the connecting performance and the sealing effect of the corrugated pipe can be well ensured.

As another embodiment of the utility model, the upper clamp 2-1 and the lower clamp 2-2 can be replaced by a fast-assembling pipe hoop matched with a pipe.

The points to be explained are as follows: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed; second, in this document, relational terms such as first and second, and the like may be used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.

Claims (8)

1. The utility model provides a resistance to compression bellows, includes the body, its characterized in that: the pipe body comprises a corrugated portion (3) and an inner pipe (4), two reinforcing ribs (5) which are obliquely symmetrical are arranged in a hollow portion between the corrugated portion (3) and the inner pipe (4), a rubber layer is filled in a section between each reinforcing rib (5) and the corresponding corrugated portion (3), end plates (8) are arranged at two ends of the pipe body, and connecting devices (2) are fixed on the peripheries of the end plates (8).

2. A crush-resistant bellows as claimed in claim 1, wherein: the corrugated part (3) is formed by arranging a plurality of bulges at equal intervals, the C-C section of each bulge is rectangular, and four corners of the rectangle are rounded corners.

3. A crush-resistant bellows as claimed in claim 1, wherein: the inner wall of the inner tube (4) is provided with bosses (1) which are continuously distributed, the cross sections of the bosses (1) are isosceles trapezoids, and the bosses (1) are arranged corresponding to the positions of wave troughs of the corrugated part (3).

4. A crush-resistant bellows as claimed in claim 1, wherein: the pipe wall thickness of the inner pipe (4) is larger than that of the corrugated part (3).

5. A crush-resistant bellows as claimed in claim 1, wherein: the section between the corrugated part (3) and the reinforcing ribs (5) is of an inverted pentagon shape.

6. A crush-resistant bellows as claimed in claim 1, wherein: the connecting device (2) comprises a connecting block (6), an upper chuck (2-1) and a lower chuck (2-2), connecting holes corresponding to each other are formed in the two ends of the upper chuck (2-1) and the two ends of the lower chuck (2-2), and the two ends of the connecting device (2) are fixedly connected through bolts.

7. The crush resistant bellows as set forth in claim 6, wherein: the lower surface of the upper chuck (2-1) and the upper surface of the lower chuck (2-2) are both provided with semicircular grooves matched with the outer edge of the end plate (8).

8. The crush resistant bellows as set forth in claim 6, wherein: and a rubber gasket (7) is arranged between the connecting block (6) and the end plate (8).

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