CN112145274A - Integrated vacuum layered heat-preservation exhaust pipe - Google Patents

Integrated vacuum layered heat-preservation exhaust pipe Download PDF

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Publication number
CN112145274A
CN112145274A CN202011070908.1A CN202011070908A CN112145274A CN 112145274 A CN112145274 A CN 112145274A CN 202011070908 A CN202011070908 A CN 202011070908A CN 112145274 A CN112145274 A CN 112145274A
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CN
China
Prior art keywords
heat
exhaust
vacuum
preservation
stainless steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011070908.1A
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Chinese (zh)
Inventor
楼狄明
唐远贽
张允华
房亮
石秀勇
谭丕强
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Nanchang Intelligent New Energy Vehicle Research Institute
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Nanchang Intelligent New Energy Vehicle Research Institute
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Publication date
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Priority to CN202011070908.1A priority Critical patent/CN112145274A/en
Publication of CN112145274A publication Critical patent/CN112145274A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • F01N13/141—Double-walled exhaust pipes or housings
    • F01N13/146—Double-walled exhaust pipes or housings with vacuum in the space between both walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • F01N13/148—Multiple layers of insulating material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/16—Selection of particular materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/08—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a pressure sensor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Silencers (AREA)

Abstract

The invention discloses an integrated vacuum layered heat-preservation exhaust pipe, wherein an engine is connected with the exhaust pipe (1), the exhaust pipe (1) is sequentially divided into three layers from inside to outside, the innermost layer is an exhaust inner pipe (103), the middle layer is a heat-preservation sleeve (101), the outermost layer is a vacuum stainless steel heat-preservation shell (102), the heat-preservation sleeve (101) covers the exhaust inner pipe (103), the outermost layer is packaged into a whole by the vacuum stainless steel heat-preservation shell (102), and the vacuum stainless steel heat-preservation shell (102) is provided with a pressure difference sensor (2) for monitoring the internal and external pressure difference of the stainless steel heat-preservation shell (102) and early warning the vacuum heat-preservation state. According to the invention, the multi-layer heat preservation device is arranged to realize the heat preservation of the exhaust of the engine and the heat insulation of the cockpit, the exhaust temperature at the inlet end of the exhaust gas post-treatment device is increased, the heat management performance and the post-treatment catalytic conversion efficiency are improved, and the exhaust pollutant emission is effectively reduced; and monitoring the working state of the stainless steel heat-insulating shell (102).

Description

Integrated vacuum layered heat-preservation exhaust pipe
Technical Field
The invention belongs to the technical field of automobile parts, and particularly relates to an integrated vacuum layered heat-preservation exhaust pipe.
Background
The exhaust heat management of a vehicle is always a key technology of emission control, and the difficulty is that the exhaust temperature entering after-treatment devices such as a selective catalytic reduction device SCR, a particulate filter DPF and the like under the condition of cold start or low load of the vehicle is too low, so that the after-treatment system cannot reach the optimal working interval of the catalytic conversion efficiency, and the exhaust stroke from the exhaust of an engine to the front end of the after-treatment is a main part of exhaust heat loss and temperature reduction. Therefore, reducing the engine-to-aftertreatment exhaust temperature loss through thermal insulation measures is an important approach to improving exhaust heat management performance and aftertreatment catalytic conversion efficiency.
The existing heat preservation and insulation device for the automobile exhaust pipe is basically used for local protection, so that parts which are arranged on an automobile chassis and are easy to damage or deform when meeting high temperature are prevented from being damaged by high temperature of the exhaust pipe, the requirement on the heat preservation performance of the exhaust pipe is not high, therefore, the exhaust pipe is wrapped by a plate-shaped cotton pad which is made of fireproof cloth and heat insulation cotton, the exhaust pipe is fixed by a clamp, the exhaust pipe is not tightly wrapped by a method of only wrapping the exhaust pipe by the fireproof cotton pad, the heat preservation cotton pad is not protected, the exhaust pipe is easy to scrape, touch, damage and pollution caused by muddy water and oil dirt, and the appearance. And the inner layer and the outer layer of the exhaust pipe wrapping material are made of high silica cloth, the middle layer is made of ceramic fiber, and the high silica cloth is used, so that the manufacturing cost is high, the assembly procedure is complex, the assembly speed is low, and the production efficiency is low.
Patent No. CN102264969A published in 2011, 11, and 30, entitled mounting mat and pollution control device having the mounting mat include mounting mats made of basalt material, and are not heat preservation devices, and the application range includes but is not limited to automobile exhaust pipes, the mounting mode is detachable housing parts, and only has heat preservation effect of single layer material, and the sealing and heat preservation reliability after mounting needs to be improved.
Disclosure of Invention
The invention aims to overcome the defects that the single-layer material of the existing exhaust pipe has poor heat insulation effect, and the sealing and heat insulation reliability after installation needs to be improved, and provides an integrated heat insulation exhaust pipe with good heat insulation sealing effect.
The technical scheme of the invention is as follows: the exhaust pipe is connected with an engine as a connecting piece or is used as a middle heat-insulation connecting piece of a post-treatment system, the exhaust pipe 1 is sequentially divided into three layers from inside to outside, the innermost layer is an exhaust inner pipe 103, the middle layer is a heat-insulation sleeve 101, and the outermost vacuum stainless steel heat-insulation shell 102 is covered by the heat-insulation sleeve and is packaged into a whole by the vacuum stainless steel heat-insulation shell 102 outside the exhaust inner pipe 103, and the outermost layer is provided with a pressure difference sensor 2 for monitoring the internal and external pressure difference of the vacuum stainless steel heat-insulation shell 102 and early warning the vacuum heat-insulation state, so that the dynamic failure of a pipeline can be monitored at any time, namely, the gas leakage. The stainless steel heat-insulating shell 102 tightly wraps the heat-insulating sleeve 101 to form an integrated organic multi-layer heat-insulating layer.
Preferably, the thermal insulation sleeve 101 is a woven basalt fiber, and the thickness of the thermal insulation sleeve is 3-5 mm; the basalt fiber is mainly woven by silica fiber, has high strength and permanent flame retardance, can resist temperature of over 1000 ℃ in a short period, can be used in an environment of 760 ℃ for a long time, has thin wrapping thickness, is non-toxic and harmless, and can wrap small gaps.
More preferably, the differential pressure sensor 2 is connected to the ECU3, the ECU3 is connected to the acousto-optic early warning device 4, and the acousto-optic early warning device 4 performs acousto-optic early warning of failure, which includes the following steps: when the volume flow of the exhaust gas is larger than a certain value, the next step is started, namely the engine starts to work, the exhaust gas is discharged from the exhaust pipe 1 of the engine and enters the catalytic purification box through the integrated vacuum layered heat-insulation exhaust pipe, and at the moment, the gas leakage detection starts after all the exhaust gas of the engine passes through the exhaust pipe 1. Otherwise, the engine discharges no waste gas, and the air leakage detection is finished; when the differential pressure signal of the differential pressure sensor 2 has large change, namely, the signal voltage rises along with the rise of the rotating speed, the upstream air pressure is high, the downstream air pressure is low, and differential pressure is generated, the stainless steel heat-insulating shell 102 is judged to be air leakage, and the ECU3 sends out an instruction to enable the acousto-optic early warning device 4 to carry out acousto-optic early warning prompt. Otherwise, the stainless steel heat-insulating shell 102 is judged to work normally, and the sealing performance is good.
Compared with the prior art, the invention has the following beneficial effects: (1) utilize its own S type crooked shape and double-deck thermal-insulated heat preservation device effect can reduce exhaust temperature decline range to minimum as far as for tail gas gets into aftertreatment device at higher temperature state, promotes aftertreatment tail gas temperature, improves aftertreatment catalytic conversion efficiency, reduces and discharges, utilizes thermal-insulated effect simultaneously, reduces high temperature and follows the pipe wall to the cockpit transmission, promotes the driving and takes the travelling comfort.
(2) The dynamic failure condition of the stainless steel heat-insulating shell 102, namely air leakage detection, is monitored through the differential pressure sensor 2, and under the condition that air leakage is found, the acousto-optic early warning device 4 gives an acousto-optic alarm.
(3) Through setting up multilayer heat preservation device, realized that engine exhaust keeps warm and the cockpit is thermal-insulated, improved exhaust gas aftertreatment device's entry end exhaust temperature, promoted thermal management performance and aftertreatment catalytic conversion efficiency, effectively reduced exhaust pollutant and discharged.
Drawings
FIG. 1 is a schematic view of an integrated vacuum layered heat preservation exhaust pipe according to the present invention;
FIG. 2 is a schematic view of a radial section at A of the integrated vacuum layered heat preservation exhaust pipe of the present invention.
Fig. 3 is a flowchart illustrating the operation of the differential pressure sensor 3 according to the present invention.
Reference numerals: 1. an exhaust pipe; 2. a differential pressure sensor; 3. an ECU; 4. an acousto-optic early warning device; 101. a heat-insulating layer; 102. a stainless steel vacuum heat-preservation shell; 103. an exhaust inner pipe.
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 all other embodiments obtained by a person of ordinary skill in the art without any creative work belong to the protection scope of the present invention.
Referring to fig. 1 and fig. 2, the technical solution of the present invention is: the utility model provides an engine exhaust pipe, the engine is connected with the blast pipe which characterized in that: the exhaust pipe is sequentially divided into three layers from inside to outside, the innermost layer is an exhaust inner pipe 103, the middle layer is a heat insulation sleeve 101, the outermost layer is a vacuum stainless steel heat insulation shell 102, the heat insulation sleeve 101 covers the outer wall of the exhaust inner pipe 103, and the outermost layer is packaged into a whole by the vacuum stainless steel shell 102.
The heat-insulating sleeve 101 is made of woven basalt fibers, the thickness of the heat-insulating sleeve is 3-5mm, the main component of the basalt fibers is woven by silica fibers, the material has high strength and permanent flame retardance, the short-term temperature resistance is over 1000 ℃, the material can be used in an environment with the temperature of 760 ℃ for a long time, the wrapping thickness is thin, and wrapping with small gaps can be achieved.
The stainless steel vacuum heat-insulating shell 102 tightly wraps the heat-insulating sleeve to form an organic heat-insulating layer, so that the heat-insulating effect of the exhaust pipe is enhanced.
The exhaust pipe 1 is bent in an S shape as a whole, and the pipe can further reduce the reduction range of the exhaust temperature to the minimum by utilizing the S-shaped bent shape of the pipe.
As shown in fig. 3, the differential pressure sensor 2 is used for determining whether the stainless steel thermal insulation shell 102 is dynamically failed, i.e. leaks, and the working steps are as follows: when the volume flow of the exhaust gas is larger than a certain value, the next step is started, namely the engine starts to work, the exhaust gas is discharged from the exhaust pipe 1 of the engine and enters the catalytic purification box through the integrated vacuum layered heat-insulation exhaust pipe, and at the moment, the gas leakage detection starts after all the exhaust gas of the engine passes through the exhaust pipe 1. Otherwise, the engine discharges no waste gas, and the air leakage detection is finished; when the differential pressure signal of the differential pressure sensor 2 has large change, namely, the signal voltage rises along with the rise of the rotating speed, the upstream air pressure is high, the downstream air pressure is low, and differential pressure is generated, the stainless steel heat-insulating shell 102 is judged to be air leakage, and the ECU3 sends out an instruction to enable the acousto-optic early warning device 4 to carry out acousto-optic early warning prompt. Otherwise, the stainless steel heat-insulating shell 102 is judged to work normally, and the sealing performance is good.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (4)

1. Integral type vacuum layering heat preservation blast pipe, its characterized in that: exhaust pipe (1) is divided into the three-layer from inside to outside in proper order, and the inlayer is exhaust inner tube (103), and the intermediate level is insulation cover (101), outmost vacuum stainless steel heat preservation casing (102), the insulation cover covers and establishes outside exhaust inner tube (103), outmost vacuum stainless steel heat preservation casing (102) by packaging into an organic whole, be equipped with differential pressure sensor (2) on vacuum stainless steel heat preservation casing (102) for the inside and outside differential pressure of monitoring vacuum stainless steel heat preservation casing (102), early warning vacuum insulation state.
2. The integrated vacuum layered heat preservation exhaust pipe according to claim 1, characterized in that: the heat-insulating sleeve (101) is a woven basalt fiber sleeve.
3. The integrated vacuum layered heat preservation exhaust pipe according to claim 1, characterized in that: the exhaust pipe (1) is integrally bent in an S shape.
4. The integrated vacuum layered heat preservation exhaust pipe according to claim 1, characterized in that: the device is characterized by further comprising an ECU (3) and a sound and light early warning device (4), wherein the differential pressure sensor (2) is connected with the ECU (3), the ECU (3) is connected with the sound and light early warning device (4), and the sound and light early warning device (4) performs failure sound and light early warning.
CN202011070908.1A 2020-10-09 2020-10-09 Integrated vacuum layered heat-preservation exhaust pipe Pending CN112145274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011070908.1A CN112145274A (en) 2020-10-09 2020-10-09 Integrated vacuum layered heat-preservation exhaust pipe

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Application Number Priority Date Filing Date Title
CN202011070908.1A CN112145274A (en) 2020-10-09 2020-10-09 Integrated vacuum layered heat-preservation exhaust pipe

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CN112145274A true CN112145274A (en) 2020-12-29

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2611722Y (en) * 2002-12-18 2004-04-14 齐克先 Multi-shielded vacuum composite corrosion-proof thermal insulating and directly buryed steam pipe
US20090184100A1 (en) * 2006-04-25 2009-07-23 Tadahiro Ohmi Heat resisting vacuum insulating material and heating device
CN102042068A (en) * 2009-10-20 2011-05-04 中川产业株式会社 Heat insulator for a vehicle exhaust pipe and methods for manufacturing the same
CN202031695U (en) * 2011-04-20 2011-11-09 山东泰山钢铁集团有限公司 Sleeve capable of reducing thermal influence of thermal end tube of automotive exhaust tube
CN103982285A (en) * 2014-06-04 2014-08-13 潍坊倍力汽车零部件有限公司 Engine exhaust pipe based on SCR tail gas aftertreatment technology
CN106640398A (en) * 2016-12-26 2017-05-10 天津大学 Device for shortening three-way catalytic converter light-off time and control method
CN109441605A (en) * 2018-12-20 2019-03-08 盐城创和新型材料有限公司 A kind of thermal shroud of dissipative muffler for automobile
CN208885374U (en) * 2018-09-03 2019-05-21 上汽通用汽车有限公司 A kind of automobile exhaust pipe and car body
CN211397703U (en) * 2019-12-03 2020-09-01 浙江创格科技有限公司 Double-layer heat insulation type exhaust pipe partition cover assembly

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2611722Y (en) * 2002-12-18 2004-04-14 齐克先 Multi-shielded vacuum composite corrosion-proof thermal insulating and directly buryed steam pipe
US20090184100A1 (en) * 2006-04-25 2009-07-23 Tadahiro Ohmi Heat resisting vacuum insulating material and heating device
CN102042068A (en) * 2009-10-20 2011-05-04 中川产业株式会社 Heat insulator for a vehicle exhaust pipe and methods for manufacturing the same
CN202031695U (en) * 2011-04-20 2011-11-09 山东泰山钢铁集团有限公司 Sleeve capable of reducing thermal influence of thermal end tube of automotive exhaust tube
CN103982285A (en) * 2014-06-04 2014-08-13 潍坊倍力汽车零部件有限公司 Engine exhaust pipe based on SCR tail gas aftertreatment technology
CN106640398A (en) * 2016-12-26 2017-05-10 天津大学 Device for shortening three-way catalytic converter light-off time and control method
CN208885374U (en) * 2018-09-03 2019-05-21 上汽通用汽车有限公司 A kind of automobile exhaust pipe and car body
CN109441605A (en) * 2018-12-20 2019-03-08 盐城创和新型材料有限公司 A kind of thermal shroud of dissipative muffler for automobile
CN211397703U (en) * 2019-12-03 2020-09-01 浙江创格科技有限公司 Double-layer heat insulation type exhaust pipe partition cover assembly

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