CN215467609U

CN215467609U - Flaring tool for capillary tube assembly

Info

Publication number: CN215467609U
Application number: CN202022308101.9U
Authority: CN
Inventors: 刘刚金; 程丰; 范东林; 王会鹏; 李焕阁; 张树昌
Original assignee: State-Owned Luoyang Dancheng Radio Factory
Current assignee: State-Owned Luoyang Dancheng Radio Factory
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2022-01-11
Anticipated expiration: 2030-10-16

Abstract

The utility model discloses a flaring tool for a capillary tube assembly, which comprises a mandril, a fixed block, a footstock, a thimble, a footstock base, a pressing block and a base, wherein the mandril is fixedly connected with the fixed block; the ejector rod is formed by integrating a holding section, a threaded section and a working section which are sequentially arranged, the threaded section of the ejector rod horizontally penetrates through the center of the fixing block, the top seat is positioned right in front of the ejector rod, and the working section extends into the center of the top seat and is in threaded connection with the top seat; the thimble seat is fixedly arranged on the L-shaped base, and the thimble seat is connected with two sides of the fixed block through the rotating plate; the thimble is horizontally arranged in the center of the thimble seat, the front end and the rear end of the thimble respectively extend out of the thimble seat, the rear end of the thimble faces the thimble seat, the front end of the thimble faces the press block, and the front end of the thimble is tapered; the pressing block is fixedly arranged on the top surface of the vertical part of the L-shaped base, a through hole penetrating through the pressing block is horizontally formed in the center of the pressing block, and the flaring at the rear end of the through hole is conical. The method can efficiently repair the flared opening of the damaged capillary assembly, and the repaired capillary assembly has accurate angle of the sealing surface and good surface quality of the sealing surface.

Description

Flaring tool for capillary tube assembly

Technical Field

The utility model belongs to the technical field of machining, and particularly relates to a flaring tool for a capillary tube assembly.

Background

In the gas path system of aviation and aerospace equipment, a stainless steel capillary tube with a flaring is widely used as a vent pipeline. The capillary tube adopts a conical tube opening seal in the gas transmission pipeline, the conical tube opening seal refers to that after a tube nut and a flat tube nozzle are sleeved on the capillary tube, the flaring of the capillary tube is processed into a conical tube opening, and after the flaring of the capillary tube is screwed with a thread of a tube nut joint, an inner conical surface of the conical tube opening of the capillary tube is tightly pressed with a conical outer conical surface of a tube structure to form seal. The capillary flaring can be repeatedly used and repeatedly disassembled or can generate cracking deformation and other damages due to factors such as vibration and collision, the sealing performance of the gas circuit system is further influenced, the equipment can not normally work, therefore, the damaged guide pipe needs to be repaired, the damaged part is cut off, and the conical pipe orifice is reamed again.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a flaring tool for a capillary assembly, which has a simple structure and is convenient to operate, and can perform flaring repair on a damaged flared end of the capillary assembly after being cut off, wherein the repaired capillary assembly meets a tightness test of a 15MPa high-pressure gas circuit.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a capillary component flaring tool comprises a mandril, a fixed block, a rotating plate, a footstock, a thimble, a footstock base, a pressing block and a base; the ejector rod is formed by integrating a holding section, a threaded section and a working section which are sequentially arranged, the threaded section of the ejector rod horizontally penetrates through the center of the fixed block and is in threaded connection with the fixed block, the top seat is positioned right ahead of the ejector rod, the front part of the working section is provided with threads and extends into the center of the top seat to be in threaded connection with the top seat, the working section is connected and fastened through a nut arranged on the working section, and the front end part of the top seat is tapered; the thimble seat is fixedly arranged on the upper surface of one end of the horizontal part of the L-shaped base through a screw, and the thimble seat is connected with two sides of the fixed block through a rotating plate; the ejector pin is horizontally arranged in the center of the ejector pin seat, the front end and the rear end of the ejector pin respectively extend out of the ejector pin seat, the rear end of the ejector pin faces the ejector seat, the front end of the ejector pin faces the pressing block, and the front end of the ejector pin is conical; the pressing block is fixedly installed on the top surface of the vertical part of the L-shaped base through a screw, a through hole penetrating through the pressing block is horizontally formed in the center of the pressing block, and the flaring at the rear end of the through hole is conical.

Furthermore, the holding section of the ejector rod is a cuboid with a regular hexagonal cross section.

Furthermore, one end of each of the two rotating plates is connected with the fixed block through a screw, the other end of each of the two rotating plates is connected with the thimble seat through a positioning screw, a positioning round hole which is matched and installed with the positioning screw is formed in each of the rotating plates, and the rotating plates rotate by taking the positioning screw as a fixed point.

Due to the adoption of the technical scheme, the utility model has the following advantages:

this capillary subassembly flaring instrument, its simple structure, reasonable in design, low in manufacturing cost, the operation is safe, convenient and fast, can carry out high-efficient the restoration to the flaring that receives the capillary subassembly of damage, the sealed face angle of tubule after the restoration is accurate, sealed face surface quality is good, work efficiency is high, fail safe nature is high, be fit for the high-pressure sealed occasion of operating pressure 15MPa, be particularly suitable for occasions that pressure requirements such as aviation, space flight are high and have strict requirement to security and leakproofness, have good popularization and application and worth.

Drawings

FIG. 1 is a schematic perspective view of a capillary assembly flaring tool of the present invention;

FIG. 2 is a schematic front view of the structure of FIG. 1;

FIG. 3 is a schematic top view of the structure of FIG. 1;

FIG. 4 is a schematic diagram of the right side view of the structure of FIG. 1;

FIG. 5 is a schematic left side view of the structure of FIG. 1;

in the figure: 1-a holding section; 2-a thread section; 3, fixing blocks; 4-a working section; 5-a nut; 6-a top seat; 7-a thimble; 8-ejector pin seat; 9 (a, b, c) -screws; 10-flaring; 11-briquetting; 12-a vertical portion; 13-a horizontal portion; 14-a set screw; 15-rotating plate; 16-through holes.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1 to 5, the flaring tool for the capillary assembly comprises a push rod, a fixed block 3, a rotating plate 15, a top seat 6, a push needle 7, a top needle seat 8, a pressing block 12 and a base; the ejector rod is formed by integrating a holding section 1, a thread section 2 and a working section 4 which are sequentially arranged, the holding section is a cuboid with a cross section in a regular hexagon shape, the thread section 2 of the ejector rod horizontally penetrates through the center of a fixing block 3 and is in threaded connection with the fixing block, a top seat 6 is positioned right ahead of the ejector rod, the front part of the working section 4 is provided with threads and extends into the center of the top seat to be in threaded connection with the top seat, the top seat is connected and fastened through a nut 5 arranged on the working section, the front end part of the top seat is in a conical shape, and the angle of the front end part in the conical shape is preferably 74 degrees; the thimble seat 8 is fixedly arranged on the upper surface of one end of a horizontal part 13 of the L-shaped base through a screw 9a, the thimble seat is connected with two sides of the fixed block 3 through rotating plates 15, one ends of the two rotating plates are connected with the fixed block 3 through screws 9c, the other ends of the two rotating plates are connected with the thimble seat 8 through positioning screws 14, the rotating plates are provided with positioning round holes which are matched with the positioning screws, and the rotating plates rotate by taking the positioning screws as fixed points; the thimble 7 is horizontally arranged in the center of the thimble seat 8, the front end and the rear end of the thimble respectively extend out of the thimble seat, the rear end of the thimble faces the thimble seat 6, the front end of the thimble faces the press block 11, the front end of the thimble is in a conical shape, and the angle of the conical front end is preferably 66 degrees; the pressing block 11 is fixedly installed on the top surface of the vertical part 12 of the L-shaped base through a screw 9b, a through hole 16 penetrating through the pressing block is horizontally formed in the center of the pressing block, the flaring 10 at the rear end of the through hole is conical, and the angle of the flaring is the same as that of the conical front end of the thimble 7.

The working process of repairing the capillary assembly by using the flaring tool for the capillary assembly comprises the following steps: firstly, marking an air leakage end of a capillary assembly; then, a pipe nut at the end part of the capillary assembly to be repaired is pinched by hands, and the stainless steel capillary is slightly pushed, so that the flared opening of the guide pipe of the capillary assembly is separated from the pipe nut; then, cutting off the leakage end of the capillary component by using a diagonal pliers, and preferably selecting the length of the rest capillary component as 160 mm; then, placing the capillary tube assembly on a flaring tool by using an open spanner, connecting the temporarily unnecessary repair end of the capillary tube assembly to the air outlet end of the purifying cylinder by using the open spanner, and checking that the connection part of the capillary tube assembly and the purifying cylinder is reliably screwed; opening a nitrogen pipeline valve, introducing nitrogen with the pressure of 100 Psi-200 Psi, flattening the end part needing to be flared by using an assorted file, trimming burrs at the outer end and the inner hole end of the capillary assembly, loosening the connection between the capillary assembly and the purifying cylinder by using an open spanner after trimming the burrs, and taking down the capillary assembly from a flaring tool; then, sequentially installing a sleeve spring, a pipe nut and a flat pipe nozzle on the stainless steel capillary, installing the capillary assembly on a flaring tool, and placing the flaring tool provided with the capillary assembly on a vice for clamping; then, the part of the stainless steel capillary tube needing flaring extends into a through hole 16 horizontally formed in the center of a pressing block 11 of a capillary tube assembly flaring tool, a vernier caliper of 0-150 mm is used for checking that the length of the part of the stainless steel capillary tube needing flaring extending out of the end face of the pressing block is 0.6-1.0 mm, an operator rotates an ejector rod through a holding section 1 of the ejector rod to push a top seat 6 to move forwards so that the top seat abuts against the rear end of an ejector pin 7, the top seat pushes the ejector pin to move forwards along with the rotation of the ejector rod, and the front end of the ejector pin extends into the center of a tube hole of the stainless steel capillary tube and has the activity of 0.01-0.03 mm; the mandril is continuously and slowly rotated until the mandril cannot rotate; and (3) repeatedly operating the stainless steel capillary tube by the capillary tube component flaring tool for 2-3 times, checking the change of the tube hole of the stainless steel capillary tube, and completely attaching the inner conical surface of the flared conduit to the conical flaring 10 of the through hole 16 in the pressing block.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, and all equivalent changes and modifications made within the scope of the claims of the present invention should fall within the protection scope of the present invention.

Claims

1. A capillary tube component flaring tool is characterized in that: the ejector pin fixing device comprises an ejector pin, a fixing block, a rotating plate, an ejector seat, an ejector pin seat, a pressing block and a base; the ejector rod is formed by integrating a holding section, a threaded section and a working section which are sequentially arranged, the threaded section of the ejector rod horizontally penetrates through the center of the fixed block and is in threaded connection with the fixed block, the top seat is positioned right ahead of the ejector rod, the front part of the working section is provided with threads and extends into the center of the top seat to be in threaded connection with the top seat, the working section is connected and fastened through a nut arranged on the working section, and the front end part of the top seat is tapered; the thimble seat is fixedly arranged on the upper surface of one end of the horizontal part of the L-shaped base through a screw, and the thimble seat is connected with two sides of the fixed block through a rotating plate; the ejector pin is horizontally arranged in the center of the ejector pin seat, the front end and the rear end of the ejector pin respectively extend out of the ejector pin seat, the rear end of the ejector pin faces the ejector seat, the front end of the ejector pin faces the pressing block, and the front end of the ejector pin is conical; the pressing block is fixedly installed on the top surface of the vertical part of the L-shaped base through a screw, a through hole penetrating through the pressing block is horizontally formed in the center of the pressing block, and the flaring at the rear end of the through hole is conical.

2. The capillary assembly flaring tool of claim 1, wherein: the holding section of the ejector rod is a cuboid with a regular hexagonal cross section.

3. The capillary assembly flaring tool of claim 1, wherein: one ends of the two rotating plates are connected with the fixed block through screws, the other ends of the two rotating plates are connected with the thimble seat through positioning screws, positioning round holes which are matched with the positioning screws are formed in the rotating plates, and the rotating plates rotate by taking the positioning screws as fixed points.