CN109296429B

CN109296429B - Automobile exhaust pipe

Info

Publication number: CN109296429B
Application number: CN201811023432.9A
Authority: CN
Inventors: 吴丹阳; 黄浩
Original assignee: Anhui Jialong Auto Parts Co ltd
Current assignee: ANHUI JIALONG AUTO PARTS Co.,Ltd.
Priority date: 2018-09-03
Filing date: 2018-09-03
Publication date: 2021-07-30
Anticipated expiration: 2038-09-03
Also published as: CN109296429A

Abstract

The invention relates to the technical field of automobile parts and discloses an automobile exhaust pipe, wherein an anti-corrosion coating is laid on the inner wall of a tail gas pipe, a supporting plate is fixedly connected inside the anti-corrosion coating, a waterproof layer is laid on the top of the supporting plate, a heat preservation cavity is arranged between the waterproof layer and the anti-corrosion coating, the top of the waterproof layer is fixedly connected with the inside of a copper pipe, liquid is filled in the copper pipe, and a heat preservation cushion is fixedly connected to the top wall inside the anti-corrosion coating. This automobile exhaust pipe has guaranteed the smooth emission of tail gas through the gas pocket, makes the heat be difficult for piling up and causes the difference in temperature to form the condensate water, utilizes trompil water conservancy diversion mode to solve the comdenstion water backward flow problem, supports according to the inclination with the backing plate with the blast pipe design into the structure of high business turn over low play, inside the difficult direct current of water gets into the car when making the car wade, the body outside is changeed to the water of tail gas pipe inner wall simultaneously, reduces the influence of comdenstion water, and drainage performance is good.

Description

Automobile exhaust pipe

Technical Field

The invention relates to the technical field of automobile parts, in particular to an automobile exhaust pipe.

Background

Along with the continuous expansion of automobile market scale and the aggravation of market competition in recent years, domestic automobile part enterprises are continuously increased in investment to improve the independent research and development, technical innovation and overseas market development capacity, and the product competitiveness is continuously enhanced; in addition to the traditional cost and price advantages, the international market status of domestic automobile part enterprises is continuously improved, the factors promote the continuous growth of the national automobile part industry, the competition of the current domestic and foreign automobile part industry is not a primary stage of no one, the current domestic and foreign automobile part industry enters a new normal state of our own excellence, how to ensure that the same exhaust tail pipe is pointedly discharged on the market, the unique way of improving the product performance by using technological innovation is provided, the smooth implementation of the project has very important reference significance for the national automobile part enterprises to open the world in the international market.

In a whole vehicle, an engine assembly system is undoubtedly the core of the vehicle, and mainly comprises an air inlet system, an engine system and an exhaust system, wherein the exhaust system mainly comprises a silencer and an exhaust tail pipe, so that the research needs to be carried out on the exhaust tail pipe of the vehicle.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the automobile exhaust pipe which has the advantages of good drainage effect and the like, and solves the problems that most of the existing automobile exhaust devices are that a silencer is horizontally arranged below a longitudinal beam or arranged outside a frame, but the arrangement always has the problem that water is easy to enter an exhaust port, one end of the exhaust pipe is high-temperature tail gas, and the other end of the exhaust pipe is contacted with cold air, so that condensed water is easy to generate, the exhaust pipe is close to the ground, and accumulated water on the road surface is easy to enter the interior of the exhaust pipe, so that the conditions that the silencer and inner components are corroded are caused.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: an automobile exhaust pipe comprises a tail gas pipe, an anti-corrosion coating is laid on the inner wall of the tail gas pipe, a supporting plate is fixedly connected inside the anti-corrosion coating, a waterproof layer is laid on the top of the supporting plate, a heat preservation cavity is arranged between the waterproof layer and the anti-corrosion coating, a copper pipe is fixedly connected to the top of the waterproof layer, liquid is filled inside the copper pipe, a heat preservation cushion is fixedly connected to the top wall inside the anti-corrosion coating, a sealing ring and a folded plate are fixedly connected to the bottom of the supporting plate respectively, a plurality of air holes and a plurality of slow flow ports are formed in the front of the folded plate in sequence, a baffle is fixedly connected to the top of the supporting plate, a partition plate is fixedly connected to the bottom of the inner wall of the tail gas pipe, a backing plate is fixedly connected to the front of the partition plate, a round hole is formed in the front of the backing plate corresponding to the folded plate, and a water outlet is formed in the bottom of the tail gas pipe corresponding to the round hole, a cooling cavity is arranged between the bottom of the base plate and the bottom of the inner wall of the tail gas pipe, and a water outlet hole is formed in the bottom of the tail gas pipe below the cooling cavity; the anti-corrosion coating is prepared from the following raw materials in parts by weight: 3-18 parts of biological antifouling agent, 2-4 parts of alkaline water absorbent, 3-6 parts of corrosion inhibitor, 17-22 parts of nano-oxide particle reinforcing agent, 110-132 parts of epoxy resin, 1.5-3.2 parts of film-forming additive and 11-13 parts of rare earth aluminum alloy powder; 13-20 parts of siloxane; 5-8 parts of composite alpha-ceramic micro powder, 3-7 parts of molybdenum disulfide, 2-5 parts of polyamide and 14-16 parts of hexamethylenetetramine.

Preferably, the copper pipe and the heat preservation pad are both located inside the heat preservation cavity, and the bottom of the heat preservation pad is in contact with the top of the copper pipe.

Preferably, the left side and the right side of the sealing ring are respectively and fixedly connected with the left side and the right side of the inner wall of the exhaust pipe, and the folded plate is positioned in front of the sealing ring.

Preferably, the slow flow ports are located below the air holes, and the number and the positions of the slow flow ports correspond to the air holes.

Preferably, the top of the baffle is fixedly connected with the top of the inner wall of the tail gas pipe, and the heat preservation cavity is positioned behind the baffle.

Preferably, the inclination angles of the supporting plate and the backing plate are fifteen degrees, and the right side of the supporting plate and the left side of the backing plate are respectively contacted with the top and the bottom of the inner wall of the exhaust pipe.

(III) advantageous effects

Compared with the prior art, the invention provides an automobile exhaust pipe, which has the following beneficial effects:

1. this automobile exhaust pipe has guaranteed the smooth emission of tail gas through the gas pocket, makes the heat be difficult for piling up and causes the difference in temperature to form the condensate water, utilizes trompil water conservancy diversion mode to solve the comdenstion water backward flow problem, supports according to the inclination with the backing plate with the blast pipe design into the structure of high business turn over low play, inside the difficult direct current of water gets into the car when making the car wade, the body outside is changeed to the water of tail gas pipe inner wall simultaneously, reduces the influence of comdenstion water, and drainage performance is good.

2. This automobile exhaust pipe makes through the anti-corrosion coating to condense and piles up the water of pipe wall and be difficult for causing the erosion harm to the tailpipe, keeps warm and fills up the low temperature state that can keep the heat preservation intracavity, and the cooling chamber gathers water through round hole and apopore and is used for the pipe wall cooling, has reduced the inside and outside air temperature difference to reduce the vapor condensation, promoted the life of tailpipe.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a side view of the structure of the tail gas pipe of the present invention.

In the figure: the heat preservation device comprises a tail gas pipe 1, an anti-corrosion coating 2, a supporting plate 3, a waterproof layer 4, a heat preservation cavity 5, a copper pipe 6, liquid 7, a heat preservation cushion 8, a sealing ring 9, a folded plate 10, an air hole 11, a slow flow port 12, a baffle 13, a partition plate 14, a backing plate 15, a round hole 16, a water outlet 17, a cooling cavity 18 and a water outlet 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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 protection scope of the present invention.

Referring to fig. 1-2, an exhaust pipe for an automobile comprises an exhaust pipe 1, an anti-corrosion coating 2 is laid on the inner wall of the exhaust pipe 1, the anti-corrosion coating 2 is made of BD418 flakes,Graphiteis thatSystem of hexagonal crystalThe crystalline carbon is in the shape of leaf scale and compact block, has excellent physical and chemical properties, and has good performanceConductivity and conductivityThermal shock resistance, corrosion resistance and the like, the corrosion-resistant layer 2 enables water condensed and accumulated on the pipe wall to be difficult to corrode and damage the tail gas pipe 1, the supporting plate 3 is fixedly connected with the inside of the corrosion-resistant coating 2, the waterproof layer 4 is laid on the top of the supporting plate 3, and the waterproof layer 4 can be used for preventing water from entering the tail gas pipe 1Higher fatty acidClass IMortar waterproofing agentAs a material, a heat preservation cavity 5 is arranged between the waterproof layer 4 and the anti-corrosion coating 2, the top of the waterproof layer 4 is fixedly connected with a copper pipe 6, the copper pipe 6 is filled with liquid 7, and the filled liquid 7 can be waterThe liquid water is refilled into the copper pipe 6 in a negative pressure state, the pressure inside the copper pipe 6 is determined by the steam pressure of the evaporated liquid 7, the liquid 7 can be evaporated as long as the surface of the copper pipe 6 is heated, the temperature and the pressure of the steam at the evaporation end are slightly higher than those of other parts of the pipe body, so that pressure difference is generated in the pipe body, the steam is enabled to flow to the cold end in the copper pipe 6, when the steam is condensed on the pipe wall, the steam releases latent heat of vaporization, so that the heat is transferred to the condensation end, the liquid 7 after the condensation returns to the evaporation end due to the annular structure of the copper pipe 6, the process can be circularly carried out as long as a heat source is used for heating, the top wall inside the anti-corrosion coating 2 is fixedly connected with the heat preservation cushion 8, the copper pipe 6 and the heat preservation cushion 8 are both positioned inside the heat preservation cavity 5, the bottom of the heat preservation cushion 8 is contacted with the top of the copper pipe 6, the bottom of the support plate 3 is respectively and fixedly connected with the sealing ring 9 and the folded plate 10, the left side and the right side of a sealing ring 9 are respectively fixedly connected with the left side and the right side of the inner wall of a tail gas pipe 1, the front of a folded plate 10 is sequentially provided with a plurality of air holes 11 and a plurality of slow flow ports 12, the smooth emission of tail gas is ensured through the air holes 11, heat is not easy to accumulate to cause temperature difference to form condensate water, the slow flow ports 12 are positioned below the air holes 11, the number and the positions of the slow flow ports 12 correspond to the air holes 11, the top of a support plate 3 is fixedly connected with a baffle plate 13, the top of the baffle plate 13 is fixedly connected with the top of the inner wall of the tail gas pipe 1, a heat preservation cavity 5 is positioned behind the baffle plate 13, the bottom of the inner wall of the tail gas pipe 1 is fixedly connected with a partition plate 14, the front of the partition plate 14 is fixedly connected with a backing plate 15, the inclination angles of the support plate 3 and the backing plate 15 are fifteen degrees, support according to 3 and backing plate 15's inclination designs into the structure of height into low play with the blast pipe, make the difficult direct current of car when wading into water get into inside the car, the water of 1 inner wall of exhaust pipe changes the outflow body outside simultaneously, reduce the influence of comdenstion water, drainage performance is good, backing plate 15's front corresponds folded plate 10 department and has seted up round hole 16, the bottom of exhaust pipe 1 corresponds round hole 16 department and has seted up outlet 17, be provided with cooling chamber 18 between backing plate 15's bottom and the inner wall bottom of exhaust pipe 1, heat preservation pad 8 can keep the low temperature state in heat preservation chamber 5, cooling chamber 18 passes through round hole 16Gather water with apopore 19 and be used for the pipe wall cooling, reduced the intraductal outer air temperature difference to reduce the vapor condensation, promoted exhaust pipe 1's life, apopore 19 has been seted up to the below that the bottom of exhaust pipe 1 is located cooling chamber 18. The corrosion-resistant coating 2 is prepared from the following raw materials in parts by weight: 3-18 parts of biological antifouling agent, 2-4 parts of alkaline water absorbent, 3-6 parts of corrosion inhibitor, 17-22 parts of nano-oxide particle reinforcing agent, 110-132 parts of epoxy resin, 1.5-3.2 parts of film-forming additive and 11-13 parts of rare earth aluminum alloy powder; 13-20 parts of siloxane; 5-8 parts of composite alpha-ceramic micro powder, 3-7 parts of molybdenum disulfide, 2-5 parts of polyamide and 14-16 parts of hexamethylenetetramine.

When the exhaust pipe is used, the heat preservation cavity 5 keeps the low-temperature state of the liquid 7, water flowing into the cooling cavity 18 through the round hole 16 or the water outlet 19 can collect water for cooling the pipe wall, so that water vapor condensation is reduced, the folded plate 10 blocks water formed by condensation or entering in a splashing mode, and the water collected inside the exhaust pipe 1 falls down along the slow flow port 12 and is discharged out of the pipe through the round hole 16, the water outlet 17 and the water outlet 19.

To sum up, the automobile exhaust pipe ensures smooth exhaust through the air hole 11, ensures that heat is not easy to accumulate to cause temperature difference to form condensate water, solves the problem of condensate water backflow by utilizing an opening diversion mode, designs the exhaust pipe into a structure with high inlet and low outlet according to the inclination angle 3 and the backing plate 15 by the support, ensures that water is not easy to enter the automobile in a direct current manner when the automobile wades, ensures that water on the inner wall of the exhaust pipe 1 flows out of the pipe body more easily, reduces the influence of the condensate water, has good drainage performance, ensures that the water condensed and accumulated on the pipe wall is not easy to cause erosion damage to the exhaust pipe 1 through the anti-corrosion layer 2, can keep the low temperature state in the heat preservation cavity 5, ensures that the cooling cavity 18 collects water through the round hole 16 and the water outlet hole 19 for cooling the pipe wall, reduces the temperature difference between air inside and outside the pipe, thereby reducing water vapor condensation, prolongs the service life of the exhaust pipe 1, and solves the problem that the existing automobile exhaust device mostly lies under a longitudinal beam with a silencer, or arrange in the frame outside, but these arrange the problem that has the gas vent to intake always, and blast pipe one end is high temperature tail gas moreover, and one end and cold air contact, the comdenstion water of easy production, and the blast pipe is close ground, makes road surface ponding easily enter the inside of blast pipe, has all caused the problem of the condition of corroding muffler and interior subassembly.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An automobile exhaust pipe, includes tail-gas pipe (1), its characterized in that: an anti-corrosion coating (2) is laid on the inner wall of the tail gas pipe (1), a supporting plate (3) is fixedly connected to the inside of the anti-corrosion coating (2), a waterproof layer (4) is laid on the top of the supporting plate (3), a heat preservation cavity (5) is arranged between the waterproof layer (4) and the anti-corrosion coating (2), a copper pipe (6) is fixedly connected to the top of the waterproof layer (4), liquid (7) is filled in the copper pipe (6), a heat preservation pad (8) is fixedly connected to the top wall of the inside of the anti-corrosion coating (2), a sealing ring (9) and a folded plate (10) are fixedly connected to the bottom of the supporting plate (3) respectively, a plurality of air holes (11) and a plurality of slow flow ports (12) are sequentially formed in the front of the folded plate (10), a baffle (13) is fixedly connected to the top of the supporting plate (3), and a partition plate (14) is fixedly connected to the bottom of the inner wall of the tail gas pipe (1), a backing plate (15) is fixedly connected to the front surface of the partition plate (14), a round hole (16) is formed in the front surface of the backing plate (15) corresponding to the folded plate (10), a water outlet (17) is formed in the bottom of the tail gas pipe (1) corresponding to the round hole (16), a cooling cavity (18) is formed between the bottom of the backing plate (15) and the bottom of the inner wall of the tail gas pipe (1), and a water outlet hole (19) is formed in the bottom of the tail gas pipe (1) below the cooling cavity (18); the anti-corrosion coating (2) is prepared from the following raw materials in parts by weight: 3-18 parts of biological antifouling agent, 2-4 parts of alkaline water absorbent, 3-6 parts of corrosion inhibitor, 17-22 parts of nano-oxide particle reinforcing agent, 110-132 parts of epoxy resin, 1.5-3.2 parts of film-forming additive and 11-13 parts of rare earth aluminum alloy powder; 13-20 parts of siloxane; 5-8 parts of composite alpha-ceramic micro powder, 3-7 parts of molybdenum disulfide, 2-5 parts of polyamide and 14-16 parts of hexamethylenetetramine.

2. The exhaust pipe for an automobile according to claim 1, characterized in that: copper pipe (6) and heat preservation pad (8) all are located the inside of heat preservation chamber (5), the bottom of heat preservation pad (8) contacts with the top of copper pipe (6).

3. The exhaust pipe for an automobile according to claim 1, characterized in that: the left side and the right side of sealing washer (9) respectively with the left side and the right side fixed connection of tail gas pipe (1) inner wall, folded plate (10) are located the place ahead of sealing washer (9).

4. The exhaust pipe for an automobile according to claim 1, characterized in that: the slow flow ports (12) are positioned below the air holes (11), and the number and the positions of the slow flow ports (12) correspond to the air holes (11).

5. The exhaust pipe for an automobile according to claim 1, characterized in that: the top of the baffle (13) is fixedly connected with the top of the inner wall of the tail gas pipe (1), and the heat preservation cavity (5) is positioned behind the baffle (13).

6. The exhaust pipe for an automobile according to claim 1, characterized in that: the inclination of backup pad (3) and backing plate (15) is fifteen degrees, the right side of backup pad (3) and the left side of backing plate (15) contact with the inner wall top and the bottom of tail gas pipe (1) respectively.