Heat preservation structure

Abstract

The utility model provides a heat preservation structure which is used for heat preservation of an exhaust pipe of an automobile tail gas treatment catalyst, the heat preservation structure comprises a flexible heat preservation coat, the extension length of the heat preservation coat is consistent with the length of a target exhaust pipe so that the heat preservation coat can be wrapped outside a heat preservation requirement area of the target exhaust pipe, and the heat preservation coat is provided with installation buckles which are in one-to-one correspondence. A plurality of sets of installation buckles are arranged in the extending direction of the heat preservation clothes, and spring buckles are arranged on the installation buckles. When the heat preservation clothes wrap the target exhaust pipe, the movable end of the spring buckle is hooked on the mounting buckle on the other side, so that the heat preservation clothes can be fixed, and the heat preservation clothes are convenient to disassemble and assemble. According to the heat preservation structure, disassembly and assembly from the target exhaust pipe are convenient, the heat preservation clothes can be disassembled by unfastening the spring buckles when the heat preservation clothes are aged or damaged externally, a user can replace the heat preservation clothes independently, and the maintenance cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile exhaust treatment, especially relates to a heat preservation structure. BACKGROUND

[0002] With the increasingly strict domestic regulations on the emission limit value of automobile exhaust pollutants, the automobile aftertreatment technology route is also constantly improving, and the heat preservation effect of the exhaust pipe of the aftertreatment catalyst is also increasingly high, so as to ensure that the catalyst can be quickly heated and maintained in the high-efficiency temperature range, and the exhaust treatment effect is improved.

[0003] The current commonly used heat preservation layer of the catalyst exhaust system is wrapped with a layer of glass fiber on the surface of the pipeline, and a millimeter-level metal heat shield is covered outside, which is welded on the surface of the pipeline. Due to the welding and fixation, it is difficult to remove, and the after-sales maintenance cost is high when aging or being damaged externally. INVENTION CONTENTS

[0004] Therefore, the utility model discloses a heat preservation structure to solve the problem of difficult removal of the heat preservation layer of the automobile exhaust system and high after-sales maintenance cost in the prior art.

[0005] The utility model provides a heat preservation structure is used for the exhaust pipe heat preservation of automobile exhaust treatment catalyst, the heat preservation structure includes: flexible heat preservation clothes, the extension length of heat preservation clothes is consistent with the length of target exhaust pipe, can be wrapped in target exhaust pipe outside, one to correspondence is provided on heat preservation clothes and is installed buckle, a plurality of groups are provided to the extension direction of heat preservation clothes to the installed buckle, spring buckle is provided on the installed buckle.

[0006] Optionally, the heat preservation clothes include high-silica glass fiber cloth layer, basalt fiber cloth layer and polyurethane cloth layer arranged in sequence from the inner surface to the outer surface, the heat preservation clothes further include a main functional area corresponding to the catalyst expansion section of the target exhaust pipe, and the inner surface of the main functional area further includes a steel wire mesh layer.

[0007] Optionally, the heat preservation clothes are sutured in a suture structure.

[0008] Optionally, the installed buckle includes an outer positioning sheet, an inner positioning sheet and a structure pin, wherein,

[0009] The outer positioning sheet and the inner positioning sheet are arranged on the outer side and the inner side of the heat preservation clothes in a registered manner, and both include a via hole;

[0010] The structure pin is a bent structure, the closed end of the structure pin is expanded to form a mounting ring, the open end of the structure pin is arranged through the outer positioning sheet, the heat preservation clothes and the inner positioning sheet, and is bent and locked outside the inner positioning sheet.

[0011] Optionally, the middle line of the unfolded shape of the thermal clothing is a bending line.

[0012] Optionally, the width of each part of the unfolded shape of the thermal clothing is consistent with the circumference of the corresponding area of the target exhaust pipe.

[0013] The thermal structure provided by the utility model is used for the exhaust pipe heat preservation of automobile exhaust treatment catalyst, including flexible thermal clothing, the extension length of the thermal clothing is consistent with the length of the target exhaust pipe, so as to be wrapped outside the heat preservation demand area of the target exhaust pipe, a corresponding mounting buckle is arranged on the thermal clothing, a plurality of groups of mounting buckles are arranged along the extension direction of the thermal clothing, and a spring buckle is arranged on the mounting buckle. When the thermal clothing is wrapped on the target exhaust pipe, the movable end of the spring buckle is hooked on the mounting buckle on the other side, so that the fixing of the thermal clothing can be realized, and the thermal clothing is convenient to disassemble and assemble. The thermal structure provided by the utility model is convenient to disassemble and assemble to the target exhaust pipe, when the thermal clothing is aged or damaged externally, the spring buckle can be disassembled by being unfastened, after-sales maintenance is convenient, and the user can replace the thermal clothing alone, so that the cost of the user can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is an unfolded structure schematic view of the thermal structure in the utility model embodiment;

[0015] Figure 2 It is a structure schematic view of the mounting buckle of the thermal structure in the utility model embodiment;

[0016] Figure 3 It is an assembly state schematic view of the thermal structure and the target exhaust pipe in the utility model embodiment;

[0017] Figure 4 It is a cross section state schematic view when the thermal structure in the utility model embodiment is installed on the target exhaust pipe.

[0018] The following specific embodiments will further illustrate the utility model in combination with the above drawings. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The drawings show several embodiments of the utility model. However, the utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0020] It should be understood that when an element as a "fixed" to another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0022] To solve the problem of difficult removal of the thermal insulation layer of the automobile exhaust system and high after-sales maintenance cost in the prior art, the utility model provides a thermal insulation structure, including flexible thermal insulation clothes, which can be wrapped outside the thermal insulation demand area of the target exhaust pipe, the thermal insulation clothes are provided with a corresponding mounting buckle, the mounting buckle is provided with a plurality of groups along the extension direction of the thermal insulation clothes, and the mounting buckle is provided with a spring buckle.

[0023] Specifically, please refer to Figure 1 , which is an unfolding structure schematic diagram of the thermal insulation structure in the embodiment of the utility model, corresponding to the bending structure of the target exhaust pipe, the middle line of the unfolded shape of the thermal insulation clothes 100 is a bending line, the thermal insulation clothes are flexible materials, which are convenient for wrapping outside the target exhaust pipe, as shown in Figure 3 , after wrapping, the thermal insulation clothes can be co-molded with the target exhaust pipe.

[0024] The extension length of the thermal insulation clothes 100 is consistent with the length of the target exhaust pipe, so that the thermal insulation clothes 100 can be wrapped outside the thermal insulation demand area of the target exhaust pipe, the thermal insulation clothes 100 are provided with a corresponding mounting buckle 120, the mounting buckle 120 is provided with a plurality of groups along the extension direction of the thermal insulation clothes 100, and the mounting buckle 120 is provided with a spring buckle 110.

[0025] As shown in Figure 4As shown, after the thermal clothing 100 is wrapped on the target exhaust pipe 200, the mounting buckles 120 are distributed on both sides of the parting line, the spring buckle 110 is pre-installed on one of the mounting buckles 120, the hook end of the spring buckle 110 is pulled to hook the other mounting buckle 120, and the thermal clothing 100 is positioned on the target exhaust pipe 200. In combination with the bending structure of the target exhaust pipe 200 and the plurality of mounting buckles 120 and spring buckles 110, the thermal clothing 100 can be stably positioned on the target exhaust pipe 200.

[0026] As shown in the figure, Figure 3 As shown, the target exhaust pipe 200 is provided with a mounting bracket 202 in the middle, the mounting bracket 202 is used for fixing the target exhaust pipe 200 to the vehicle frame, and the two ends are provided with joints 201 for connecting with the opponent's pipe, and the area corresponding to the two joints 201 is the area requiring thermal insulation. The wrapping design of the thermal clothing 100 can effectively avoid the blocking problem of the joints 201 and the mounting bracket 202, and the installation is convenient.

[0027] To meet the thermal insulation requirement, in this embodiment, the thermal clothing 100 comprises a high-silica glass fiber cloth layer, a basalt fiber cloth layer and a polyurethane cloth layer arranged in sequence from the inner surface to the outer surface. The thermal clothing further comprises a main functional area 101 corresponding to the catalyst expansion section of the target exhaust pipe. The inner surface of the main functional area further comprises a steel mesh layer, which can improve the mechanical protection effect of the catalyst expansion section of the target exhaust pipe and improve the reliability of the catalyst.

[0028] To facilitate production, in this embodiment, the thermal clothing 100 is a sewing structure, and the sewing thread can be selected from, for example, polyester fiber thread, polyimide fiber thread, aramid fiber thread and steel wire, which has certain wear resistance and high temperature resistance, and can meet the use requirement. The actual selection can be made according to the specific requirement.

[0029] To realize the locking of the buckle, in this embodiment, as shown in the figure, Figure 2 The mounting buckle 120 comprises an outer positioning piece 121, an inner positioning piece 122 and a structure pin 123. The outer positioning piece 121 and the inner positioning piece 122 are arranged in position on the outer side and the inner side of the thermal clothing 100, and both comprise a through hole for the structure pin 123 to pass through. The structure pin 123 is a bending structure, the closed end of the structure pin 123 is expanded to form a mounting ring, the spring buckle 110 is pre-installed in the mounting ring, the open end of the structure pin 123 passes through the outer positioning piece 121, the thermal clothing 100 and the inner positioning piece 122 and is arranged outside the inner positioning piece 122 and is locked in a bending manner, so as to press the outer positioning piece 121 and the inner positioning piece 122 tightly on the thermal clothing 100 and ensure the fixing effect.

[0030] The outer positioning sheet 121 and the inner positioning sheet 122 can balance the pulling force generated by the spring buckle 110 when pre-tightening the structure pin 123, avoid damage to the via hole on the thermal insulation garment 100, and ensure the reliability of the installation buckle 120. The outer positioning sheet 121, the inner positioning sheet 122, and the structure pin 123 can be made of stainless steel, aluminum alloy, or the like.

[0031] Corresponding to the diameter size of each part of the target exhaust pipe, in the embodiment, the width of each part of the unfolded shape of the thermal insulation garment 100 is consistent with the circumference of the corresponding area of the target exhaust pipe, so that after the thermal insulation garment 100 is wrapped around the target exhaust pipe, each part can completely wrap the target exhaust pipe, avoiding the appearance of hollow areas and exposed areas, and further ensuring the thermal insulation effect.

[0032] The thermal insulation structure provided by the utility model is used for the exhaust pipe thermal insulation of automobile exhaust treatment catalyst, including flexible thermal insulation garment, the extension length of the thermal insulation garment is consistent with the length of the target exhaust pipe, and can be wrapped around the thermal insulation demand area of the target exhaust pipe, a corresponding installation buckle is arranged on the thermal insulation garment, a plurality of groups of installation buckles are arranged along the extension direction of the thermal insulation garment, and a spring buckle is arranged on the installation buckle. When the thermal insulation garment is wrapped around the target exhaust pipe, the movable end of the spring buckle is hooked on the installation buckle on the other side, so that the fixing of the thermal insulation garment can be realized, and the thermal insulation garment is convenient to disassemble and assemble. The thermal insulation structure provided by the utility model is convenient to disassemble and assemble to the target exhaust pipe, when the thermal insulation garment is aged or damaged externally, the spring buckle can be unfastened to disassemble, the user can replace the thermal insulation garment alone, and the maintenance cost is low.

[0033] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The above-described embodiments only express several specific implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the patent range of the utility model. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A thermal insulation structure for insulating the exhaust pipe of an automotive exhaust gas treatment catalytic converter, characterized in that, The heat preservation structure comprises a flexible heat preservation garment, the extension length of the heat preservation garment is consistent with the length of a target exhaust pipe, the heat preservation garment can be wrapped outside the target exhaust pipe, a corresponding mounting buckle is arranged on the heat preservation garment, a plurality of groups of mounting buckles are arranged along the extension direction of the heat preservation garment, and a spring buckle is arranged on the mounting buckle.

2. The heat retaining structure according to claim 1, wherein The heat preservation garment comprises, from the inner surface to the outer surface, a high-silica glass fiber cloth layer, a basalt fiber cloth layer and a polyurethane cloth layer, the heat preservation garment further comprises a main functional area corresponding to the catalyst expansion section of the target exhaust pipe, and the inner surface of the main functional area further comprises a steel mesh layer.

3. The heat retaining structure according to claim 1 or 2, characterized by, The heat preservation garment is a sewing structure.

4. The heat retaining structure according to claim 1, wherein The mounting buckle comprises an outer positioning sheet, an inner positioning sheet and a structure pin, The outer positioning sheet and the inner positioning sheet are arranged in position on the outer side and the inner side of the heat preservation garment, and both comprise a via hole; The structure pin is a bent structure, the closed end of the structure pin is expanded to form a mounting ring, the open end of the structure pin is arranged through the outer positioning sheet, the heat preservation garment and the inner positioning sheet, and is bent and locked outside the inner positioning sheet.

5. The heat retaining structure according to claim 1, wherein The center line of the unfolded shape of the heat preservation garment is a bent line.

6. The insulating structure according to claim 1, wherein The width of each part of the unfolded shape of the heat preservation garment is consistent with the circumference of the corresponding area of the target exhaust pipe.

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