CN209959371U

CN209959371U - Flexible support assembly for double-wall pipe of dual-fuel engine

Info

Publication number: CN209959371U
Application number: CN201920539188.5U
Authority: CN
Inventors: 王凯; 胡为民; 冯梓怡; 孙云峰; 袁建; 王磊; 刘闯
Original assignee: Hudong Heavy Machinery Co Ltd
Current assignee: Hudong Heavy Machinery Co Ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-01-17
Anticipated expiration: 2029-04-19

Abstract

The utility model discloses a double-fuel engine's flexible bracket component for double-walled pipe and supporting method thereof, the subassembly includes the backing sheet of two relative butts, through fastening bolt and self-locking nut fastening connection between two backing sheets. Each supporting sheet comprises an inner tube clamping part and an elastic outer plate, the inner tube clamping part protrudes outwards in the center to form a clamping part matched with the outer diameter of the inner wall tube, the elastic outer plate protrudes outwards to form a supporting part matched with the inner diameter of the outer wall tube, and the outlines of the clamping part and the supporting part are concentrically arranged. An anti-wear coating to prevent sparking is also provided. The method design accommodates supporting the inner wall tube with the assembly within the outer wall tube. And the flexible connection mode is adopted, so that the load overload caused by the axial deformation of the bracket caused by temperature change and vibration is reduced. The mounting process of the bracket is simplified, and the operability is improved. Meanwhile, the parts are low in cost, excessive machining precision does not need to be guaranteed, and machining cost and difficulty are reduced.

Description

Flexible support assembly for double-wall pipe of dual-fuel engine

Technical Field

The utility model relates to a dual fuel engine field especially relates to a flexible support assembly for double walled pipe of dual fuel engine.

Background

With the stricter and stricter emission requirements of low-speed diesel engines for ships, the dual-fuel main engine becomes a technical trend, and the dual-wall pipe is a pipeline which must be used by a gas system. The double-arm pipe has quite high requirements on processing and welders, the longer double-wall pipe is used to be extremely necessary for reducing the welding density of the double-arm pipe and increasing the sealing property of the double-wall pipe, and in order to meet the requirements, the support is added to the inside of the double-wall pipe according to the needs, the rigidity of the double-wall pipe is increased, and the axial vibration of the inner-wall pipe is reduced.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a flexible support assembly for a double-wall pipe of a dual-fuel engine and a supporting method thereof.

The purpose of the utility model is realized by adopting the following technical scheme:

the double-wall tube flexible bracket assembly of the dual-fuel engine comprises two supporting pieces which are oppositely abutted, and the two supporting pieces are fastened and connected through fastening bolts and self-locking nuts. Each support piece comprises an inner wall pipe clamping portion and an elastic outer plate, the inner wall pipe clamping portion protrudes outwards in the center to form a clamping portion matched with the outer diameter of the inner wall pipe, the elastic outer plate protrudes outwards to form a support portion matched with the inner diameter of the outer wall pipe, and the clamping portion and the outline of the support portion are concentrically arranged.

Preferably, the two sides of the inner wall pipe clamping part of the supporting piece are integrally connected with connecting parts with connecting holes, the connecting part on one side is connected to the elastic outer plate, and the connecting part on the other side vertically extends outwards from the outer end part to form an abutting joint.

Preferably, an abrasion resistant coating is applied to the outer surface of the elastic outer plate.

Preferably, the abrasion resistant coating is abrasion resistant rubber.

Preferably, the support sheet is an elastic steel sheet.

A supporting method of a flexible bracket assembly for a double-wall pipe of a dual-fuel engine comprises the following steps:

a. coating an anti-wear coating on the elastic outer plate of the support sheet;

b. the two support sheets are oppositely abutted, so that abutting heads of the two support sheets are abutted against a connecting part of the other support sheet;

c. preliminarily connecting two supporting sheets which are mutually abutted by a fastening bolt and a self-locking nut to form a flexible bracket assembly;

d. sleeving the preliminarily connected flexible support components outside the inner wall pipe of the double-wall pipe according to a preset interval, and drilling a bolt anti-loosening agent on the bolt and the nut and then fastening;

e. inserting the inner wall pipe and the flexible support assembly into the outer wall pipe by leaning against the outer wall pipe, and when the flexible support assembly is close to the pipe orifice of the outer wall pipe, pressing the two elastic outer plates of the flexible support assembly inwards by hands to insert the flexible support assembly into the outer wall pipe;

f. drawing back the inserted inner wall pipe and the flexible bracket component by 1cm, observing, adjusting and installing in place;

g. and e, repeating the steps e-f, and inserting all the flexible bracket assemblies together with the inner wall pipe into the outer wall pipe until the installation is finished.

Compared with the prior art, the beneficial effects of the utility model reside in that: and a flexible connection mode is adopted, and the connection structure between the inner wall pipe and the outer wall pipe is a flexible steel sheet, so that the load overload caused by the axial deformation of the support due to temperature change and vibration is reduced. Adopt the utility model discloses afterwards, reduced the radial load of support, strengthened the intensity of interior wall pipe in the double-walled pipe, reduced the vibrations of interior wall pipe for outer wall pipe. Due to the adoption of the ingenious design, the mounting process of the support is simplified, and the operability is improved. Meanwhile, the parts are low in cost, excessive machining precision does not need to be guaranteed, and machining cost and difficulty are reduced. The maintenance cost is reduced, the service life cycle of the support is consistent with that of the diesel engine, and is even longer, the disassembly, the inspection and the maintenance are avoided, and the maintenance cost is reduced.

Drawings

FIG. 1 is a schematic structural view of a flexible bracket assembly for a double-walled tube according to the present invention;

FIG. 2 is a top view of a flexible stent assembly;

FIG. 3 is a schematic view of a single support sheet of the flexible stent assembly;

fig. 4 is a schematic view of a connection method of a double-walled pipe.

In the figure: 1. an inner wall tube holding portion; 2. a connecting portion; 3. connecting holes; 4. a butting head; 5. An elastic outer plate; 6. a wear-resistant coating; 7. fastening a bolt; 8. a self-locking nut; 100. a flexible stent assembly; 200. an inner wall tube; 300. an outer wall pipe.

Detailed Description

The technical solutions in the embodiments of the present invention are 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 some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

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

Referring to fig. 1-3, the double-walled pipe flexible bracket assembly 100 for the dual-fuel engine includes two support plates which are abutted against each other and are fastened and connected with each other through a fastening bolt 7 and a self-locking nut 8.

Each supporting piece comprises an inner wall pipe clamping part 1 and an elastic outer plate 5, the inner wall pipe clamping part 1 protrudes outwards in the center to form a clamping part matched with the outer diameter of the inner wall pipe, the elastic outer plate 5 protrudes outwards to form a supporting part matched with the inner diameter of the outer wall pipe, and the outlines of the clamping part and the supporting part are concentrically arranged.

Referring to fig. 3, the two sides of the inner wall tube holding part 1 of the support sheet are integrally connected with connecting parts 2 with connecting holes 3, wherein the connecting part 2 at one side is connected to an elastic outer plate 5, and the connecting part 2 at the other side vertically extends outwards from the outer end part to form an abutting head 4.

In order to reduce friction and prevent sparks from being generated by mounting impacts, the outer surface of the elastic outer plate 5 is coated with an abrasion resistant coating 6. The coating can be paint, wear-resistant rubber and the like. Preferably, the wear resistance is relatively high.

For the elasticity of the bracket component, the supporting sheet is made of an elastic steel sheet.

Further, there is provided a method of supporting a flexible leg assembly for a double wall pipe of a dual fuel engine, referring to fig. 4, the method comprising:

a. coating an anti-wear coating 6 on an elastic outer plate 5 of the support sheet;

b. the two support sheets are oppositely abutted, so that abutting heads 4 of the two support sheets are abutted against the connecting part 2 of the other opposite support sheet;

c. preliminarily connecting two supporting sheets which are mutually abutted by a fastening bolt 7 and a self-locking nut 8 to form a flexible bracket assembly;

d. sleeving the preliminarily connected flexible support components outside the inner wall pipe 200 of the double-wall pipe according to a preset interval, and drilling a bolt anti-loosening agent on the bolt and the nut and then fastening;

e. inserting the inner wall pipe 200 and the flexible support assembly 100 into the outer wall pipe 300, and pressing the two elastic outer plates of the flexible support assembly inwards by hands when the flexible support assembly is close to the pipe orifice of the outer wall pipe to insert the flexible support assembly into the outer wall pipe;

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. Double-fuel engine's flexible bracket subassembly for double-walled pipe includes the backing sheet of two relative butt, two through fastening bolt and auto-lock nut fastening connection, its characterized in that between the backing sheet: each support piece comprises an inner wall pipe clamping portion and an elastic outer plate, the inner wall pipe clamping portion protrudes outwards in the center to form a clamping portion matched with the outer diameter of the inner wall pipe, the elastic outer plate protrudes outwards to form a support portion matched with the inner diameter of the outer wall pipe, and the clamping portion and the outline of the support portion are concentrically arranged.

2. The flexible stent assembly of claim 1, wherein: the two sides of the inner wall pipe clamping part of the supporting sheet are integrally connected with connecting parts with connecting holes, the connecting part on one side is connected to the elastic outer plate, and the connecting part on the other side extends outwards from the outer end part vertically to form an abutting joint.

3. The flexible stent assembly of claim 1, wherein: and coating an anti-wear coating on the outer surface of the elastic outer plate.

4. The flexible stent assembly of claim 3, wherein: the wear-resistant coating is wear-resistant rubber.

5. The flexible stent assembly of claim 1, wherein: the support sheet is an elastic steel sheet.