CN212780600U

CN212780600U - Low-pressure sealing component for heat transfer coefficient measuring device

Info

Publication number: CN212780600U
Application number: CN202021819547.1U
Authority: CN
Inventors: 芦天亮; 董超行; 杨会
Original assignee: Xiyi Clothing Zhengzhou Technology Co ltd
Current assignee: Xiyi Clothing Zhengzhou Technology Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-03-23
Anticipated expiration: 2030-08-26

Abstract

The utility model provides a low pressure seal component for heat transfer coefficient survey device has solved heat transfer survey experimental apparatus well heat pipe exchanger and has changed the trouble, the more problem that takes time. The utility model comprises a test sleeve and a copper pipe, wherein the copper pipe is movably inserted in the test sleeve, a gap for air circulation is reserved between the outer wall of the copper pipe and the inner wall of the test sleeve, annular chucks are fixedly arranged at the two ends of the test sleeve, a gland nut and an O-shaped ring I for sealing are sleeved at the two ends of the copper pipe, and the two ends of the copper pipe are inserted in a sealing pipe with two through ends; one end of the sealing tube, which is far away from the chuck, is fixedly embedded in the middle of the blind plate, one side of the blind plate, which is far away from the chuck, is provided with a pipe joint, the pipe joint is fixedly connected with the end part of the sealing tube, and the blind plate and the chuck are mutually attached; the test sleeve is provided with a conduit communicated with the inner space, the conduit is provided with an O-shaped ring II and a screw cap for sealing, and the center of the screw cap is provided with a conduit hole for the conduit to pass through.

Description

Low-pressure sealing component for heat transfer coefficient measuring device

Technical Field

The utility model relates to a heat transfer coefficient surveys technical field, especially indicates a low pressure seal component for heat transfer coefficient surveys device.

Background

A tubular heat exchanger and a double-pipe heat exchanger in a heat transfer determination experimental device are usually provided with an outer stainless steel tube and an inner red copper tube, so that the heat exchanger has the effects of rust prevention, scale prevention and good heat exchange effect, and the two materials are connected and sealed by a tube expansion method and a welding method in common forms, so that the sealing is firm; however, the method is troublesome to replace and install in teaching, takes much time, and is difficult to realize the purposes of quick replacement and adjustment; an end face flange pressing method is also adopted, and the method is troublesome in processing and easy to cause problems in sealing performance; in addition, in the schemes, when the temperature of the inner tube wall surface is measured, a film surface mount resistor is often adopted to obtain an accurate measurement effect, and a lead of the resistor is led out from the inside of a stainless steel tube, so that the lead part is often subjected to air leakage; the invention mainly solves the problems of quick replacement of the inner tube of the double-tube heat exchanger and the sealing of a measuring lead.

SUMMERY OF THE UTILITY MODEL

In order to solve among the heat transfer survey experimental apparatus that exists among the background art that double-pipe heat exchanger changes the trouble, takes time more problem, the utility model provides a low pressure seal component for heat transfer coefficient survey device.

The technical scheme of the utility model is that: a low-pressure sealing component for a heat transfer coefficient measuring device comprises a test sleeve and a copper pipe, wherein the copper pipe is movably inserted in the test sleeve, a gap for air circulation is reserved between the outer wall of the copper pipe and the inner wall of the test sleeve, annular chucks are fixedly arranged at two ends of the test sleeve, a gland nut and an O-shaped ring I for sealing are sleeved at two ends of the copper pipe, two ends of the copper pipe are inserted in a sealing pipe with two through ends, an outer wire which is in threaded connection and matching with the gland nut is arranged on the outer wall of the sealing pipe, and the O-shaped ring I is pressed at the end part of the sealing pipe by the gland nut; one end of the sealing tube, which is far away from the chuck, is fixedly embedded in the middle of the blind plate, one side of the blind plate, which is far away from the chuck, is provided with a pipe joint, the pipe joint is fixedly connected with the end part of the sealing tube, and the blind plate and the chuck are mutually attached; be equipped with the conduit with the inner space intercommunication on the test sleeve, the upper end of conduit is equipped with the external screw thread, is equipped with sealed O type circle II and the screw cap of using on the conduit, the screw cap is connected with the upper end screw thread of conduit, and O type circle II is pressed on the up end of conduit by the screw cap, and the center of screw cap is equipped with the wire guide that supplies the wire to pass through.

The outer side surface of the chuck is flush with the side surface of the end part of the test sleeve.

The outer diameter of the two ends of the copper pipe is equal to the inner diameter of the sealing pipe, the inner diameter of the O-shaped ring I is equal to the outer diameter of the two ends of the copper pipe, the inner diameter of the compression nut is equal to the outer diameter of the O-shaped ring I, one surface, close to the center of the test sleeve, of the compression nut is provided with an annular plate structure, and the inner ring diameter of the annular plate structure is equal to the outer diameter.

And the middle part of the test sleeve is provided with a front transparent window and a rear transparent window which correspond to each other.

And a raw adhesive tape for sealing is filled between the screw cap and the upper end face of the conduit.

The utility model has the advantages that: the invention adopts a built-in gland nut and an O-shaped ring I, a measured copper pipe is compacted and sealed in a sealing pipe, when in installation, the copper pipe is firstly inserted into a testing sleeve made of stainless steel, then the gland nut and the O-shaped ring I are sequentially sleeved at the end part of the copper pipe by an operator, then the end part of the copper pipe is inserted into the sealing pipe, meanwhile, the gland nut is pinched by fingers to prevent the gland nut from moving, the O-shaped ring I is jacked into the gland nut by the end surface of the sealing pipe in the process of inserting the copper pipe, then the gland nut is rotated until the O-shaped ring I is completely jacked into the gland nut, then the operator pushes the blind plates at the two ends by hands to move towards a chuck until the blind plates and the chuck are tightly; when the lead is led out from the conduit and the screw cap, a part of the raw rubber belt is filled in the screw cap, then the screw cap is screwed on the upper part of the conduit, and the raw rubber belt is pressed by the upper end surface of the conduit to form a seal, so that gas is prevented from escaping from the seal. The utility model is suitable for a low pressure experimental conditions below 0.4MP, the change dismouting of being surveyed the copper pipe is quick, and sealing performance is good, not only accords with heat transfer survey experimental apparatus's experiment demand, combines the copper pipe change time of having saved operating personnel moreover.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

in the figure, the test tube 1, the test sleeve 2, the copper tube 3, the wire guide tube 4, the screw cap 5, the chuck 6, the blind plate 7, the tube joint 8, the sealing tube 9, the O-shaped ring I, 10, the compression nut 11 and the transparent window.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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 any creative effort belong to the protection scope of the present invention.

Example 1: a low-pressure sealing component for a heat transfer coefficient measuring device is shown in figure 1 and comprises a test sleeve 1 and a copper pipe 2 which are made of stainless steel, wherein the middle part of the test sleeve 1 is provided with a front transparent window 11 and a rear transparent window 11 which correspond to each other. Copper pipe 2 activity is inserted and is established in test sleeve 1, has the clearance that supplies circulation of air between the outer wall of copper pipe 2 and test sleeve 1's the inner wall, and test sleeve 1's both ends are fixed and are equipped with annular chuck 5, chuck 5's lateral surface and test sleeve 1's tip side parallel and level. The both ends cover of copper pipe 2 is equipped with gland nut 10 and O type circle I9 of sealed usefulness, the both ends of copper pipe 2 are inserted and are established in the penetrating sealed tube 8 in both ends, the external diameter at copper pipe 2 both ends equals the internal diameter of sealed tube 8, be equipped with on the outer wall of sealed tube 8 with gland nut 10 threaded connection complex outer silk, O type circle I9 is pressed at the tip of sealed tube 8 by gland nut 10, O type circle I9's internal diameter equals the external diameter at copper pipe 2 both ends, gland nut 10's internal diameter equals O type circle I9's external diameter, gland nut 10's the one side that is close to test sleeve 1 center is equipped with the annular plate structure, the inner ring diameter of annular plate structure equals with copper pipe 2's external diameter, the annular plate structure is used for blockking O type circle I9.

One end of the sealing tube 8, which is far away from the chuck 5, is fixedly embedded in the middle of the blind plate 6, one side of the blind plate 6, which is far away from the chuck 5, is provided with a pipe joint 7, the pipe joint 7 is fixedly connected with the end part of the sealing tube 8, and the blind plate 6 and the chuck 5 are mutually attached; be equipped with the conduit 3 with the inner space intercommunication on the test sleeve 1, the upper end of conduit 3 is equipped with the external screw thread, be equipped with sealed O type circle II and the screw cap 4 of usefulness on the conduit 3, screw cap 4 and the upper end threaded connection of conduit 3, O type circle II is pressed on the up end of conduit 3 by screw cap 4, the center of screw cap 4 is equipped with the wire guide that supplies the wire to pass through, it has the raw sticky tape that is used for sealing to fill between the up end of screw cap 4 and conduit 3.

The working principle is as follows: during installation, a copper pipe is inserted into a test sleeve made of stainless steel, then an operator sequentially sleeves a compression nut and an O-shaped ring I on the end part of the copper pipe, then the end part of the copper pipe is inserted into a sealing pipe, the compression nut is pinched by fingers to prevent the compression nut from moving, the O-shaped ring I is pushed into the compression nut by the end surface of the sealing pipe in the insertion process of the copper pipe, then the compression nut is rotated until the O-shaped ring I is completely pushed into the compression nut, then the operator pushes the blind plates at the two ends by hands to move towards a chuck until the blind plates and the chuck are tightly attached together; when the lead is led out from the conduit and the screw cap, a part of the raw rubber belt is filled in the screw cap, then the screw cap is screwed on the upper part of the conduit, and the raw rubber belt is pressed by the upper end surface of the conduit to form a seal, so that gas is prevented from escaping from the seal. After the experiment is completed, the compression nut at one end is pulled out, then the compression nut and the blind plate are disassembled, the tested copper pipe is taken out, and the steps are repeated when the copper pipe needs to be replaced again.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A low-pressure seal member for a heat transfer coefficient measuring apparatus, characterized in that: the test device comprises a test sleeve (1) and a copper pipe (2), wherein the copper pipe (2) is movably inserted into the test sleeve (1), a gap for air circulation is reserved between the outer wall of the copper pipe (2) and the inner wall of the test sleeve (1), annular chucks (5) are fixedly arranged at two ends of the test sleeve (1), gland nuts (10) and O-shaped rings I (9) for sealing are sleeved at two ends of the copper pipe (2), two ends of the copper pipe (2) are inserted into sealing pipes (8) with two through ends, outer threads matched with the gland nuts (10) in a threaded connection mode are arranged on the outer wall of each sealing pipe (8), and the O-shaped rings I (9) are pressed at the end portions of the sealing pipes (8) by the gland nuts (10); one end, far away from the chuck (5), of the sealing tube (8) is fixedly embedded in the middle of the blind plate (6), a pipe joint (7) is arranged on one side, far away from the chuck (5), of the blind plate (6), the pipe joint (7) is fixedly connected with the end part of the sealing tube (8), and the blind plate (6) is attached to the chuck (5); be equipped with conduit (3) with the inner space intercommunication on test sleeve (1), the upper end of conduit (3) is equipped with the external screw thread, be equipped with sealed O type circle II and screw cap (4) of using on conduit (3), the upper end threaded connection of screw cap (4) and conduit (3), O type circle II is pressed on the up end of conduit (3) by screw cap (4), the center of screw cap (4) is equipped with the wire guide that supplies the wire to pass through.

2. A low-pressure seal member for a heat transfer coefficient measuring apparatus according to claim 1, wherein: the outer side surface of the chuck (5) is flush with the end side surface of the test sleeve (1).

3. A low-pressure seal member for a heat transfer coefficient measuring apparatus according to claim 1, wherein: the external diameter at copper pipe (2) both ends equals the internal diameter of sealed tube (8), and the internal diameter of O type circle I (9) equals the external diameter at copper pipe (2) both ends, and the internal diameter of gland nut (10) equals the external diameter of O type circle I (9), and the one side that is close to test sleeve pipe (1) center of gland nut (10) is equipped with the annular plate structure, and the inner ring diameter of annular plate structure equals the external diameter of copper pipe (2).

4. A low-pressure seal member for a heat transfer coefficient measuring apparatus according to claim 1, wherein: the middle part of the test sleeve (1) is provided with a front transparent window and a rear transparent window (11) which are mutually corresponding.

5. A low-pressure seal member for a heat transfer coefficient measuring apparatus according to claim 1, wherein: a raw adhesive tape for sealing is filled between the silk cap (4) and the upper end surface of the conduit (3).