CN113611573A

CN113611573A - Electromagnetic circuit breaker delay tube with leakage-proof function

Info

Publication number: CN113611573A
Application number: CN202011173006.0A
Authority: CN
Inventors: 陈文清
Original assignee: Hunan Huafeng Xinyu Electronic Co ltd
Current assignee: Hunan Huafeng Xinyu Electronic Co ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-11-05

Abstract

The invention discloses an electromagnetic circuit breaker delay tube with a leakage-proof function, and relates to the technical field of electromagnetic circuit breaker delay tubes. The invention improves the sealing effect and the sealing capability of the time delay tube of the electromagnetic circuit breaker, prevents the time delay oil from extruding the sealing parts of the fixed iron core and the time delay tube due to thermal expansion, prolongs the service life and improves the practicability, the extrusion caused by the time delay oil expansion can not generate the oil leakage phenomenon during the breaking capability test, and the sealing effect meets the detection requirement.

Description

Electromagnetic circuit breaker delay tube with leakage-proof function

Technical Field

The invention relates to the technical field of electromagnetic circuit breaker delay tubes, in particular to an electromagnetic circuit breaker delay tube with a leakage-proof function.

Background

The electromagnetic circuit breaker has the advantages of high sensitivity, no need of oil change and frequent operation, the time delay pipe part is a key part of the electromagnetic circuit breaker product, a sealed space is arranged in the time delay pipe part, and the time for the movable iron core to move in place determines the time for the time delay and jump of the switch of the electromagnetic circuit breaker. This department designer is through continuous effort and improvement, improve delay tube subassembly seal structure, can improve the sealed fastness of delay tube subassembly by a wide margin, make electromagnetic circuit breaker through heavy current or high temperature environment under, can not rise because of the time delay oil temperature in the delay tube, the volume expansion, extrude the sealed position of deciding iron core and delay tube, produce the oil leakage phenomenon, lead to the switch inefficacy, and current delay tube subassembly seal knot joint intensity is poor, when electromagnetic circuit breaker coil flows through 1000A's breaking capacity test current, coil calorific capacity is big, make delay tube subassembly temperature very high, the volume expansion that is heated of delay oil, decide the iron core and receive the time delay oil high pressure, drop from in the delay tube easily, cause the product to destroy and become invalid. In addition, when the electromagnetic circuit breaker passes large current in a high-temperature test or for a long time, the temperature of delay oil in the delay tube is increased, the volume of the delay oil is expanded, and if the delay tube and the fixed iron core are not tightly sealed, the oil leakage phenomenon can occur.

Disclosure of Invention

The invention aims to solve the problems, provides an electromagnetic circuit breaker delay tube with a leakage-proof function, optimizes and improves the structure of the electromagnetic circuit breaker delay tube, greatly improves the sealing effect and the sealing capability of the electromagnetic circuit breaker delay tube, and effectively prevents delay oil from extruding the sealing parts of a fixed iron core and the delay tube due to thermal expansion, so that the service life and the practicability of the electromagnetic circuit breaker delay tube are greatly improved, the connection structural strength of the fixed iron core and the delay tube is tested in breaking capability, the phenomenon of oil leakage cannot occur due to extrusion caused by the expansion of the delay oil, the structure is stable, and the sealing effect meets the detection requirement.

In order to realize the purpose, the invention adopts the technical scheme that: a time delay tube of an electromagnetic circuit breaker with a leakage-proof function comprises a fixed iron core body and a time delay tube body, wherein the time delay tube body is of a hollow tubular structure, a boss in the middle of the fixed iron core body extends into the time delay tube body and is in contact pressing sealing with the inner wall of the time delay tube body, the end part of the boss is provided with a first connecting column, one end of the first connecting column is connected with a pressure spring, one end of the pressure spring, which is far away from the first connecting column, is connected with a second connecting column, the second connecting column is arranged on a movable iron core body, the movable iron core body is movably arranged in the time delay tube body, time delay oil is arranged in the time delay tube body, fusion welding bosses are arranged at the outer edge positions of the end part of the fixed iron core body and the end part of the time delay tube body, arc grooves are symmetrically arranged on the end surfaces of the fixed iron core body, a connecting block is arranged at one side, which is close to the time delay tube body, a first fusion welding rod is arranged between the connecting block and the inner wall of the arc groove, a limiting plate body is fixedly arranged on the connecting block, the limiting plate body is of an arc bending plate structure, and one end part of the limiting plate body is in contact pressing manner, the boss at the end part of the delay tube body is provided with an annular groove, and an embedded block of the inner side wall of the limiting plate body is inserted into the annular groove.

As a further optimization of the invention, the first welding rod is an arc-shaped strip structure made of fusion welding materials and matched with the inner side wall of the arc-shaped groove, the first welding rod can be melted when being heated, and the connecting block and the arc-shaped groove are welded by the arc-shaped welding rod formed after cooling.

As a further optimization of the invention, the end part of the embedded block extending into the annular groove of the delay tube body is provided with a second fusion welding rod, the second fusion welding rod is made of fusion welding materials and is melted when being heated, the cooled second fusion welding rod is solidified in the annular groove of the delay tube body, and the embedded block and the delay tube body are welded and fixed.

As a further optimization of the invention, the liquid receiving grooves are arranged on the outer surface of the movable iron core body in a criss-cross mode, and the delay oil can enter the liquid receiving grooves when being heated and expanded.

As a further optimization of the invention, the boss is pressed into the delay tube body through a squeeze riveter, and the boss is in interference fit with the inner wall of the delay tube body.

As a further optimization of the invention, the delay oil is liquid silicone oil and is uniformly distributed in the internal space of the delay tube body.

As further optimization of the invention, the fusion welding boss is an annular boss structure made of fusion welding materials, the fusion welding boss can be melted when being heated, and a welding ring formed after cooling is used for fixedly, hermetically welding the fixed iron core body and the delay tube body.

As a further optimization of the invention, the pressure spring is in interference fit with the first connecting column and the second connecting column.

The invention has the beneficial effects that: the invention provides an electromagnetic circuit breaker delay tube with a leakage-proof function, which optimizes and improves the structure of the electromagnetic circuit breaker delay tube, greatly improves the sealing effect and the sealing capability of the electromagnetic circuit breaker delay tube, and effectively prevents delay oil from extruding the sealing parts of a fixed iron core and the delay tube due to thermal expansion, thereby greatly improving the service life and the practicability of the electromagnetic circuit breaker delay tube.

1. The invention is provided with a connecting block, a first welding rod, a second welding rod and a limiting plate body which are connected by fusion welding of the first welding rod and the second fusion welding. The device has the advantages that the overall stability of the device is greatly improved, the time delay oil is prevented from extruding the sealing parts of the fixed iron core and the time delay tube due to thermal expansion, and the qualification requirement of the product is met.

2. The invention is provided with the liquid receiving tank, and the liquid receiving tank is filled with the delay oil in the process of the expansion of the delay oil by heating, so that the pressure of the expansion of the delay oil is greatly relieved, and the extrusion of the delay oil on the sealing part of the fixed iron core and the delay tube is reduced.

Drawings

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

Fig. 2 is a schematic sectional view at a-a in fig. 1.

Fig. 3 is a schematic structural view of the position of the limiting plate body of the invention.

The text labels in the figures are represented as: 1. a fixed iron core body; 2. a delay tube body; 3. a time delay oil; 4. a pressure spring; 5. a moving iron core body; 101. a boss; 102. a first connecting column; 103. welding the boss by welding; 104. an arc-shaped slot; 105. a joining block; 106. a first molten welding rod; 107. embedding a block; 108. a second molten welding rod; 109. a limiting plate body; 501. a second connecting column; 502. a liquid receiving tank.

Detailed Description

The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.

As shown in fig. 1 to 3, the specific structure of the present invention is: a time delay tube of an electromagnetic circuit breaker with a leakage-proof function comprises a fixed iron core body 1 and a time delay tube body 2, wherein the time delay tube body 2 is of a hollow tubular structure, a boss 101 in the middle of the fixed iron core body 1 extends into the time delay tube body 2 and is in contact pressure sealing with the inner wall of the time delay tube body 2, a first connecting column 102 is arranged at the end part of the boss 101, a pressure spring 4 is connected at one end of the first connecting column 102, one end of the pressure spring 4, far away from the first connecting column 102, is connected with a second connecting column 501, the second connecting column 501 is arranged on a movable iron core body 5, the movable iron core body 5 is movably arranged in the time delay tube body 2, time delay oil 3 is arranged in the time delay tube body 2, a boss 103 is arranged at the position of the outer edge of the boss at the end part of the fixed iron core body 1 and the end part of the time delay tube body 2 in a fusion welding mode, an arc-shaped groove 104 is symmetrically arranged on one side, close to the time delay tube body 2, an adapter block 105 is arranged in the arc-shaped groove 104, a first welding rod 106 is arranged between the adapter 105 and the inner wall of the arc-shaped groove 104, the connecting block 105 is fixedly provided with a limiting plate 109, the limiting plate 109 is of an arc-shaped bent plate-shaped structure, one end of the limiting plate 109 is in contact with a boss at the end of the delay tube body 2, the boss at the end of the delay tube body 2 is provided with an annular groove, and an embedded block 107 on the inner side wall of the limiting plate 109 is inserted into the annular groove.

Preferably, the first welding rod 106 is an arc-shaped strip structure made of fusion welding material and matched with the inner side wall of the arc-shaped groove 104, the first welding rod 106 is melted when being heated, and the arc-shaped welding rod formed after cooling welds the connecting block 105 and the arc-shaped groove 104.

Preferably, the end of the embedded block 107 extending into the annular groove of the delay tube body 2 is provided with a second welding rod 108, the second welding rod 108 is made of a welding material and is melted when heated, and the cooled second welding rod 108 is solidified in the annular groove of the delay tube body 2 and fixes the embedded block 107 and the delay tube body 2 in a welding manner.

Preferably, the liquid receiving grooves 502 are arranged on the outer surface of the moving iron core body 5 in a criss-cross manner, and the delay oil 3 can enter the liquid receiving grooves 502 when being heated and expanded.

Preferably, the boss 101 is pressed into the delay tube body 2 by a squeeze riveter, and the boss 101 is in interference fit with the inner wall of the delay tube body 2.

Preferably, the delay oil 3 is liquid silicone oil and is uniformly distributed in the inner space of the delay tube body 2.

Preferably, the fusion welding boss 103 is an annular boss structure made of fusion welding materials, the fusion welding boss 103 is melted when being heated, and a welding ring formed after cooling is used for fixing, sealing and welding the fixed iron core body 1 and the delay tube body 2.

Preferably, the pressure spring 4 is in interference fit with the first connecting column 102 and the second connecting column 501.

It should be noted that, in this document, 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.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.

Claims

1. A time delay tube of an electromagnetic circuit breaker with a leakage-proof function is characterized by comprising a fixed iron core body (1) and a time delay tube body (2), wherein the time delay tube body (2) is of a hollow tubular structure, a boss (101) in the middle of the fixed iron core body (1) extends into the time delay tube body (2) and is in contact pressure sealing with the inner wall of the time delay tube body (2), a first connecting column (102) is arranged at the end part of the boss (101), one end of the first connecting column (102) is connected with a pressure spring (4), one end, far away from the first connecting column (102), of the pressure spring (4) is connected with a second connecting column (501), the second connecting column (501) is arranged on a movable iron core body (5), the movable iron core body (5) is movably arranged inside the time delay tube body (2), time delay oil (3) is arranged inside the time delay tube body (2), a fusion welding boss (103) is arranged at the end part of the fixed iron core body (1) and the outer edge position of the boss at the end part of the time delay tube body (2), the end face of the fixed iron core body (1) is symmetrically provided with arc-shaped grooves (104), one side, close to the delay tube body (2), in each arc-shaped groove (104) is provided with a connecting block (105), a first welding rod (106) is arranged between each connecting block (105) and the inner wall of each arc-shaped groove (104), each connecting block (105) is fixedly provided with a limiting plate body (109), each limiting plate body (109) is of an arc-shaped bent plate-shaped structure, one end of each limiting plate body (109) touches and presses a boss at the end part of the delay tube body (2), a boss at the end part of the delay tube body (2) is provided with an annular groove, and an embedding block (107) of the inner side wall of each limiting plate body (109) is inserted into the annular groove.

2. The electromagnetic circuit breaker delay tube with leakage prevention function of claim 1, wherein the first welding rod (106) is an arc-shaped strip structure made of fusion welding material and matched with the inner side wall of the arc-shaped groove (104), the first welding rod (106) is melted when being heated, and the arc-shaped welding rod formed after cooling welds the connecting block (105) and the arc-shaped groove (104).

3. The electromagnetic circuit breaker delay tube with leakage prevention function of claim 1, wherein the end of the embedded block (107) extending into the annular groove of the delay tube body (2) is provided with a second welding rod (108), the second welding rod (108) is made of fusion welding material and is melted when being heated, and the cooled second welding rod (108) is solidified in the annular groove of the delay tube body (2) and fixes the embedded block (107) and the delay tube body (2) in a welding way.

4. The electromagnetic circuit breaker delay tube with leakage prevention function of claim 1, wherein the outer surface of the moving iron core (5) is provided with liquid receiving grooves (502) in a criss-cross manner, and the delay oil (3) can enter the liquid receiving grooves (502) when being heated and expanded.

5. The electromagnetic circuit breaker delay tube with the leakage-proof function as claimed in claim 1, wherein the boss (101) is pressed into the delay tube body (2) by a squeeze riveter, and the boss (101) is in interference fit with the inner wall of the delay tube body (2).

6. The electromagnetic circuit breaker delay tube with leakage prevention function of claim 1, wherein the delay oil (3) is liquid silicone oil and is uniformly distributed in the inner space of the delay tube body (2).

7. The electromagnetic circuit breaker delay tube with leakage prevention function of claim 1, wherein the fusion welding boss (103) is an annular boss structure made of fusion welding material, the fusion welding boss (103) is melted when heated, and a welding ring formed after cooling fixes and seals the stator core body (1) and the delay tube body (2) for welding.

8. The electromagnetic circuit breaker delay tube with the leakage-proof function of claim 1, wherein the pressure spring (4) is in interference fit with the first connecting column (102) and the second connecting column (501).