阅读说明：本技术 一种薄壁耐高温高压中冷器波纹管 (Thin-wall high-temperature-resistant high-pressure-resistant intercooler corrugated pipe ) 是由 邱鹏程 王宏志 魏泽鑫 于 2019-09-17 设计创作，主要内容包括：本发明属于商用车冷却系统技术领域,具体涉及一种薄壁耐高温高压中冷器波纹管。波纹管分为三层结构：胶管内胶层、胶管加强层、胶管外胶层；胶管内胶层材料为氟化硅胶,胶管加强层为耐高温的四层芳纶布,胶管外胶层材料为硅胶；波纹管的两端为直线段、中间为波纹段；波纹段设有波峰和波谷结构；波峰两侧夹角β为75°至105°,波峰外表面圆角半径R1为8mm至11mm,波谷内表面圆角半径R2为5mm至7mm,波峰外表面相切圆直径D4为直线段外径D3加9mm至11mm,波谷内表面相切圆直径D1为直线段内径D2减8mm至12mm。本发明重量轻,常温爆破压力大于2MPa；具有耐高温,强度高,模量高,尺寸稳定,收缩率低,耐热性,耐化学腐蚀,柔韧性好,介电性好等优点。(The invention belongs to the technical field of commercial vehicle cooling systems, and particularly relates to a thin-wall high-temperature and high-pressure resistant intercooler corrugated pipe. The corrugated pipe is divided into three layers: the rubber tube inner rubber layer, the rubber tube reinforced layer and the rubber tube outer rubber layer; the rubber layer material in the rubber tube is fluorinated silica gel, the reinforced layer of the rubber tube is made of four layers of high-temperature-resistant aramid fabric, and the rubber layer material outside the rubber tube is silica gel; two ends of the corrugated pipe are straight line sections, and the middle of the corrugated pipe is a corrugated section; the corrugated section is provided with a wave crest and a wave trough structure; crest both sides contained angle beta is 75 to 105, crest surface fillet radius R1 is 8mm to 11mm, trough internal surface fillet radius R2 is 5mm to 7mm, crest surface tangent circle diameter D4 is straightway external diameter D3 plus 9mm to 11mm, trough internal surface tangent circle diameter D1 is straightway internal diameter D2 minus 8mm to 12 mm. The invention has light weight, and the normal temperature blasting pressure is more than 2 MPa; the high-temperature-resistant and high-strength composite material has the advantages of high temperature resistance, high strength, high modulus, stable size, low shrinkage rate, heat resistance, chemical corrosion resistance, good flexibility, good dielectric property and the like.)

1. The utility model provides a high temperature and high pressure resistant intercooler bellows of thin wall which characterized in that: the corrugated pipe is divided into three layers: the rubber tube inner rubber layer (2), the rubber tube reinforced layer (3) and the rubber tube outer rubber layer (4); the rubber tube inner rubber layer (2) is made of fluorinated silica gel, the rubber tube reinforcing layer (3) is made of high-temperature-resistant four-layer aramid fabric, and the rubber tube outer rubber layer (4) is made of silica gel.

2. The thin-walled high temperature and high pressure resistant intercooler corrugated pipe of claim 1, wherein:

two ends of the thin-wall high-temperature and high-pressure resistant intercooler corrugated pipe are straight line sections, and the middle of the thin-wall high-temperature and high-pressure resistant intercooler corrugated pipe is a corrugated section; the wave section is provided with a wave crest (5) and a wave trough (6) structure.

3. The thin-walled high temperature and high pressure resistant intercooler corrugated pipe of claim 2, wherein:

crest (5) both sides contained angle beta is 75 to 105, crest (5) surface fillet radius R1 is 8mm to 11mm, trough (6) internal surface fillet radius R2 is 5mm to 7mm, crest (5) surface tangent circle diameter D4 is straightway external diameter D3 and adds 9mm to 11mm, trough (6) internal surface tangent circle diameter D1 is straightway internal diameter D2 and subtracts 8mm to 12 mm.

4. The thin-walled high temperature and high pressure resistant intercooler corrugated pipe of claim 2, wherein:

each trough (6) is provided with a metal anti-expansion ring (7), and the metal anti-expansion ring (7) is tightly attached to the trough (6).

5. The thin-walled high temperature and high pressure resistant intercooler corrugated pipe of claim 4, wherein:

the diameter of the anti-expansion ring (7) is 3.2 mm.

6. The thin-walled high temperature and high pressure resistant intercooler corrugated pipe of claim 2, wherein:

the inner diameter D2 of the straight line section is more than or equal to phi 60 mm.

7. The thin-walled high temperature and high pressure resistant intercooler corrugated pipe of claim 1, wherein:

the thickness of glue film (2) is 0.65mm in the rubber tube, the thickness of glue film outside of tubes (4) is 0.9mm, the whole thickness that glue film (2), rubber tube enhancement layer (3), rubber tube outside of tubes glue film (4) three add up in the rubber tube is 3.2 mm.

Technical Field

The invention belongs to the technical field of commercial vehicle cooling systems, and particularly relates to a thin-wall high-temperature and high-pressure resistant intercooler corrugated pipe.

Background

At present, various commercial vehicle manufacturers generally adopt a supercharging, air-air cooling system which has the functions of supercharging and cooling the inlet air of an engine and increasing the inlet air density of the engine so as to improve the combustion working condition of the engine, improve the power of the engine and meet the national environmental protection requirement.

On engines that employ turbocharging, an intercooler bellows is typically required for connecting the engine to the intercooler. With the continuous improvement of the engine power and the compression ratio of the turbocharger, the working temperature and the pressure resistance requirements of the intercooler corrugated pipe are higher and higher. At the same time, intercooler bellows also carry the vibration requirements of the damping system and require excellent flexibility.

At present, the wall thickness of a corrugated pipe of an intercooler in the industry is large, generally about 5mm, and the pressure resistance is about 1 MPa. Meanwhile, the wall thickness is large, the rigidity is increased, the shock absorption performance is reduced, and the cost is high.

Disclosure of Invention

The invention aims to provide an intercooler corrugated pipe which has outstanding heat resistance, high pressure resistance, vibration resistance and low cost.

The technical scheme of the invention is as follows:

the utility model provides a high temperature and high pressure resistant intercooler bellows of thin wall, the bellows divide into three layer construction: the rubber tube inner rubber layer 2, the rubber tube reinforced layer 3 and the rubber tube outer rubber layer 4; the rubber tube inner rubber layer 2 is made of fluorinated silica gel, the rubber tube reinforcing layer 3 is made of high-temperature-resistant four-layer aramid fabric, and the rubber tube outer rubber layer 4 is made of silica gel.

In the technical scheme, two ends of the corrugated pipe of the thin-wall high-temperature and high-pressure resistant intercooler are straight line sections, and the middle of the corrugated pipe of the thin-wall high-temperature and high-pressure resistant intercooler is a corrugated section; the wave section is provided with a wave crest 5 and a wave trough 6 structure.

In the technical scheme, an included angle beta of two sides of the peak 5 is 75-105 degrees, the fillet radius R1 of the outer surface of the peak 5 is 8-11 mm, the fillet radius R2 of the inner surface of the trough 6 is 5-7 mm, the diameter D4 of the tangent circle of the outer surface of the peak 5 is the diameter D3 of the straight line segment and is added with 9-11 mm, and the diameter D1 of the tangent circle of the inner surface of the trough 6 is the diameter D2 of the straight line segment and is reduced with 8-12 mm.

Each trough 6 department all installs the metal and prevents the expander 7, and the expander 7 is prevented to the metal closely laminates with trough 6.

The diameter of the expansion-proof ring 7 in the technical scheme is 3.2 mm.

In the technical scheme, the inner diameter D2 of the straight line section is more than or equal to phi 60 mm.

In the technical scheme, the thickness of the rubber tube inner rubber layer 2 is 0.65mm, the thickness of the rubber tube outer rubber layer 4 is 0.9mm, and the total thickness of the rubber tube inner rubber layer 2, the rubber tube reinforcing layer 3 and the rubber tube outer rubber layer 4 is 3.2 mm.

Compared with the prior art, the invention has the following advantages:

1. when the rubber tube is in a straight tube type, the thin-wall high-temperature and high-pressure resistant intercooler corrugated tube is light in weight, and the normal-temperature bursting pressure is greater than 2 MPa;

2. the thin-wall high-temperature and high-pressure resistant intercooler corrugated pipe has the advantages of high temperature resistance, high strength, high modulus, stable size, low shrinkage rate, heat resistance, chemical corrosion resistance, good flexibility, good dielectric property and the like;

3. the thin-wall high-temperature and high-pressure resistant intercooler corrugated pipe has the use temperature of 150-275 ℃, and the fluorinated silica gel on the inner rubber layer of the rubber pipe has good oil resistance;

4. the thin-wall high-temperature and high-pressure resistant intercooler corrugated pipe has good flexibility, so that the assembly is easy, the adaptability is strong, and the production efficiency can be greatly improved.

Drawings

FIG. 1 is a sectional view of a thin-wall high-temperature and high-pressure resistant intercooler bellows structure according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at I;

FIG. 3 is a schematic view of a connection structure of a thin-wall high-temperature and high-pressure resistant intercooler bellows according to the present invention;

FIG. 4 is a schematic view of an exemplary thin-walled high temperature and high pressure resistant intercooler bellows according to the present invention;

in the figure: 1. a bellows; 2. an inner rubber layer of the rubber tube; 3. a hose reinforcing layer; 4. an outer rubber layer of the rubber pipe; 5. wave crest; 6. a trough of a wave; 7. an anti-expansion ring; 8. a metal tube; 9. a clamping hoop; 11. an intercooler intake bellows; 12. an intercooler air outlet corrugated pipe; 81. an intercooler air inlet metal pipe; 82. an engine intake metal tube;

A. a supercharger; B. an engine; C. and an intercooler.

Detailed description of the preferred embodiments

The invention is further described below with reference to the accompanying drawings.

A thin-wall high-temperature and high-pressure resistant intercooler corrugated pipe comprises: the inner rubber layer of the rubber tube adopts oil-resistant and high and low temperature-resistant fluorinated silica gel as an isolation layer, the reinforced layer of the rubber tube adopts four layers of high temperature-resistant aramid fabric, so that the product has excellent high temperature resistance and excellent pressure resistance, and the outer rubber layer of the rubber tube adopts silica gel; the corrugated pipe rubber tube body is formed by adopting an automatic winding process, the thickness of an inner rubber layer of the rubber tube is controlled to be 0.65mm, the thickness of an outer rubber layer of the rubber tube is controlled to be 0.9mm, the integral wall thickness of the rubber tube is 3.2mm, and the integral wall thickness of the rubber tube is the sum of the thickness of the inner rubber layer 2 of the rubber tube, the thickness of a reinforced layer 3 of the rubber tube and the thickness of the outer rubber layer 4 of.

The rubber tube inner rubber layer adopts high and low temperature resistant, high tear resistance, solvent resistant and high performance fluorinated silica gel base rubber, a heat resistant agent is added into the base rubber, the thermal aging resistance of the product is improved by a deeper layer, meanwhile, a high performance filler is filled, the physical mechanical performance and the product processing performance of the product are improved, and through banburying, a bis-di-tetra-and a bis-penta-vulcanizing agent are added at last, so that the crosslinking reaction between rubber material macromolecules is more sufficient, and then pigment is added.

The hose reinforcing layer is made of aramid fiber plain cloth with high temperature resistance and high strength, so that the durability of the product can be ensured.

The rubber tube outer rubber layer adopts high tear resistance, high and low temperature resistance and excellent compression permanent deformation base rubber, 50-degree rubber materials are obtained through the base rubber proportion of different hardness, meanwhile, high-performance filling materials are added, so that the rubber materials have good elongation, tensile strength, processability and product performance are better and superior, heat-resistant agents are added, so that the product has good thermal aging resistance, the rubber tube outer rubber layer is banburied and then cooled, and after the rubber tube outer rubber layer is cooled, certain proportions of bibibibiquad vulcanizing agents and biquintet vulcanizing agents are added, so that the silica gel has good crosslinking reaction, the silica gel obtains better tear resistance and tensile property, and the compression permanent deformation is more superior.

The two ends of the thin-wall high-temperature and high-pressure resistant intercooler corrugated pipe are straight line sections, and the straight line sections are connected with a metal pipe through clamping hoops; the middle section of the intercooler corrugated pipe is designed with a corrugated structure, the wave crests and the wave troughs of the corrugated structure are circular arcs, the two sides of the wave crests are symmetrical, the included angle is 75-105 degrees, the fillet radius of the outer surface of the wave crests is 8-11 mm, the inner surface of the wave trough is 5-7 mm, the diameter of a tangent circle of the outer surface of the wave crests is the diameter of a straight line section plus 9-11 mm, and the diameter of a tangent circle of the inner surface of the wave trough is the diameter of the straight line section minus 8-; the number of wave crests and wave troughs of the corrugated structure can be increased or reduced according to the arrangement requirement of the whole vehicle; each wave trough department of intercooler bellows all installs the metal and prevents the expander, can prevent effectively that the intercooler bellows from taking place to explode under the too high condition of system pressure.

An application example of a thin-wall high-temperature and high-pressure resistant intercooler corrugated pipe can be used at the air inlet and air outlet ends of an intercooler (comprising an intercooler air inlet corrugated pipe and an intercooler air outlet corrugated pipe), one end of the intercooler air inlet corrugated pipe is connected with an intercooler air inlet metal pipe, the other end of the intercooler air inlet corrugated pipe is connected with an intercooler air inlet, one end of the intercooler air outlet corrugated pipe is connected with an engine air inlet metal pipe, and the other end of the intercooler air outlet corrugated pipe is connected.

In the application of the thin-wall high-temperature and high-pressure resistant intercooler corrugated pipe, the intercooler air inlet corrugated pipe and the intercooler air outlet corrugated pipe are fixed with the intercooler air inlet metal pipe, the engine air inlet metal pipe and the intercooler air inlet and outlet through clamping hoops.

Referring to fig. 1 and 2, the thin-wall high-temperature and high-pressure resistant intercooler corrugated pipe of the present invention, hereinafter referred to as corrugated pipe 1, has a three-layer structure: the rubber tube comprises a rubber tube inner rubber layer 2, a rubber tube reinforced layer 3 and a rubber tube outer rubber layer 4. The inner rubber layer 2 of the rubber tube is made of fluorine-silicon rubber, the rubber tube reinforcing layer 3 is made of high-temperature-resistant four-layer aramid fabric, and the outer rubber layer 4 of the rubber tube is made of silica gel.

Referring to fig. 1, two ends of the corrugated pipe 1 are straight sections, and the middle is a corrugated section. The straight line section is convenient for pipeline connection, and the connection depth of the metal pipe is ensured; the ripple section has a wave crest 5 and a wave trough 6 structure, and plays a role in buffering and damping vibration. An included angle beta of two sides of the peak 5 is 75-105 degrees, the fillet radius R1 of the outer surface of the peak 5 is 8-11 mm, the fillet radius R2 of the inner surface of the trough 6 is 5-7 mm, the diameter D4 of the tangent circle of the outer surface of the peak 5 is the diameter D3 of the straight line section plus 9-11 mm, and the diameter D1 of the tangent circle of the inner surface of the trough 6 is the diameter D2 of the straight line section minus 8-12 mm; the number of wave crests and wave troughs of the corrugated structure can be increased or reduced according to the arrangement requirement of the whole vehicle; every trough 6 department of intercooler bellows all installs the metal and prevents expander 7, and expander 7 is prevented to the metal and trough 6 closely laminates, can prevent effectively that the intercooler bellows from taking place to explode under the too high condition of system pressure. The diameter of the anti-expansion ring 7 is 3.2mm, and the anti-expansion ring 7 is arranged in the wave trough 6 of the corrugated pipe, so that the internal pressure resistance of the corrugated section can be improved.

Referring to fig. 1, two ends of the corrugated pipe 1 are straight line sections, the inner diameter D2 of the straight line section of the rubber pipe is phi 60mm or more, the wall thickness of the rubber pipe is 3.2mm, and the whole structure of the rubber pipe is a straight pipe.

Referring to fig. 3, which is a schematic view of the connection structure of the present invention, a straight line section of the corrugated pipe 1 is connected to a metal pipe 8, and the outer side of the corrugated pipe 1 is fixed by a clamp 9.

Referring to fig. 4, an example of an application of a thin-wall high-temperature and high-pressure resistant intercooler corrugated pipe includes: one end of the intercooler air inlet corrugated pipe 11 is connected with an inlet of an intercooler C, the other end of the intercooler air inlet corrugated pipe 11 is connected with an intercooler air inlet metal pipe 81, and the air inlet metal pipe 81 is connected with the supercharger A; the intercooler air outlet corrugated pipe 12 has one end connected to the outlet of the intercooler C and the other end connected to the engine air inlet metal pipe 82, and the air inlet metal pipe 82 is connected to the air inlet of the engine B. Straight line sections at two ends of the intercooler air inlet corrugated pipe 11 and the intercooler air outlet corrugated pipe 12 are connected with the metal pipe and the intercooler air inlet and outlet through the clamp 9. Wherein, the invention can be applied to both the intercooler air inlet corrugated pipe 11 and the intercooler air outlet corrugated pipe 12.