CN219379267U - Whole tube brazing clamp for ceramic discharge tube - Google Patents

Abstract

The utility model provides a whole tube brazing clamp of a ceramic discharge tube, which comprises an annular positioning block, wherein a component positioning groove is formed in the middle of one end of the annular positioning block, a tube shell positioning block is arranged on the outer side of the component positioning groove, and the tube shell positioning block and the component positioning groove are of concentric ring structures and are used for solving the technical problem that the heat conduction is blocked in the brazing process, the heat distribution is uneven, and the brazing quality is affected in the existing clamp structure.

Description

Whole tube brazing clamp for ceramic discharge tube

Technical Field

The utility model mainly relates to the technical field of brazing, in particular to a whole tube brazing clamp of a ceramic discharge tube.

Background

The ceramic discharge tube has very high requirements on the quality of the brazing of parts, and the requirements are mainly expressed on concentricity, tightness and the like, and because the indexes relate to the performance and service life of the product, in the process of brazing the ceramic discharge tube, the brazing clamp can help the brazing effect of the ceramic discharge tube to be ensured to a certain extent, the use of the brazing clamp can facilitate the production of the product, and the concentricity of the parts and the air tightness of the whole tube are improved.

The existing whole tube brazing fixture of the ceramic discharge tube is composed of a plurality of parts, a discharge tube assembly is placed in the fixture, and each part is assembled for brazing, so that in order to obtain good brazing quality, the brazing fixture is required to have high machining precision.

During the operation of the specific examples, the inventors have found the following drawbacks:

the existing brazing clamp is of a sheath structure, for example, in the prior art shown in fig. 2, all parts of a ceramic discharge tube are placed into the clamp in the working process, heat conduction can be blocked in the brazing process through a top cover, uneven heat distribution is caused, the brazing quality is affected, the brazing clamp can deform due to cold and heat, and a product is not easy to take out after brazing.

The above-described contents fall within the technical knowledge of the inventors, and the contents of the present application do not necessarily constitute the prior art, since the technical contents in the art are huge and complicated.

Disclosure of Invention

The utility model provides a whole tube brazing clamp of a ceramic discharge tube, which is used for solving the technical problems that the prior clamp structure in the prior art can obstruct heat conduction in the brazing process, so that heat distribution is uneven, and the brazing quality is affected.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows: the utility model provides a whole pipe anchor clamps of ceramic discharge tube, including annular locating piece, annular locating piece one end middle part is opened there is the subassembly positioning groove, the subassembly positioning groove outside is equipped with the tube shell locating piece, the tube shell locating piece with the subassembly positioning groove is concentric ring structure, this device during operation needs two anchor clamps to carry out the mutual cooperation, put into each subassembly of ceramic discharge tube one by one the back and carry out the clamping and weld about, the work flow is as follows, place the tube shell locating piece square of annular locating piece up earlier, put into discharge tube cathode assembly, then place first cyclic annular solder piece on discharge tube cathode assembly, place discharge tube ceramic tube shell on first cyclic annular solder piece, place second cyclic annular solder piece on discharge tube ceramic tube shell, place discharge tube anode assembly on second cyclic annular solder piece, finally place another anchor clamps down rather than the cooperation, obtain the whole subassembly of completion of installation, put into the stove and braze the work, this device is pegged graft by two same anchor clamps and form, the grafting department is equipped with the gap, can make things convenient for the heat conduction of stove to go into inside, improve the heat transfer efficiency of anchor clamps during brazing and improve the subassembly and the homogeneity of brazing, and then improve the quality of brazing.

Further, the annular positioning block and the pipe shell positioning block are integrally formed.

Furthermore, the annular positioning block and the pipe shell positioning block are made of 1Cr18Ni9Ti stainless steel.

Further, the shell positioning block comprises a plurality of arc-shaped blocks which are uniformly arranged at intervals.

Further, the arc-shaped blocks are provided with four arc-shaped blocks, and the interval between every two arc-shaped blocks is larger than the size of the arc-shaped blocks.

Further, an annular heat conduction hole is formed in the middle of the component positioning groove.

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

the utility model has reasonable design and simple integral structure, the limit work is carried out by mutually matching the two clamps during the work, and the joint of the two clamps is provided with a gap, thereby being beneficial to heat transfer in the brazing process, improving the brazing quality of the internal components, and facilitating the disassembly and the extraction of the ceramic discharge tube after the brazing because no sheath structure is adopted.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of a prior art structure of the present utility model;

fig. 3 is a schematic diagram of an explosive structure according to the present utility model.

1. An annular positioning block; 2. a component positioning groove; 21. an annular heat conduction hole; 3. a tube shell positioning block; 31. an arc-shaped block; 4. a discharge tube cathode assembly; 5. a ceramic envelope of the discharge vessel; 6. a discharge tube anode assembly.

Description of the embodiments

In order that the utility model may be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which, however, the utility model may be embodied in many different forms and are not limited to the embodiments described herein, but are instead provided for the purpose of providing a more thorough and complete disclosure of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," "provided," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Examples

Referring to fig. 1-3, a whole tube brazing fixture for ceramic discharge tubes comprises an annular positioning block 1, wherein a component positioning groove 2 is formed in the middle of one end of the annular positioning block 1, a tube shell positioning block 3 is arranged on the outer side of the component positioning groove 2, the tube shell positioning block 3 and the component positioning groove 2 are of concentric ring structures, two fixtures are needed to be matched with each other during operation of the device, each component of the ceramic discharge tubes is inserted one by one and then clamped and welded, the working flow is as follows, the tube shell positioning block 3 of the annular positioning block 1 is firstly square upwards placed, a discharge tube cathode component 4 is placed, then a first annular solder piece 7 is placed on the discharge tube cathode component 4, a discharge tube ceramic 5 is placed on the first annular solder piece 7, a second annular solder piece 8 is placed on the discharge tube ceramic tube shell 5, and finally the other fixture is downwards placed and matched with the second annular solder piece 8 to obtain the whole assembly which is completely installed, the whole assembly is inserted into a brazing furnace for brazing operation, and gaps are formed by inserting and welding the two fixtures, the welding furnace is convenient for heat transfer inside the fixtures, and heat conduction and heat transmission uniformity of the assembly is improved when the brazing is inserted and brazed.

The annular positioning block 1 and the pipe shell positioning block 3 are integrally formed, the whole device is integrally designed, and the pipe shell positioning block 3 and the positioning groove of the clamp are of concentric ring structures, so that higher concentricity can be obtained, and the processing is convenient.

The clamp materials of the annular positioning block 1 and the pipe shell positioning block 3 are 1Cr18Ni9Ti stainless steel, the 1Cr18Ni9Ti stainless steel is required to be subjected to heat treatment and then is manufactured, the deformation of the clamp during high-temperature brazing can be reduced, and the clamp after lathe processing is required to be subjected to cleaning and hydrogen burning blackening treatment so as to avoid the adhesion of welding flux on the surface of the clamp during high-temperature brazing.

The shell positioning block 3 comprises a plurality of arc blocks 31 which are uniformly arranged at intervals, and the arc blocks 31 are arranged so that the two clamps can be mutually inserted and matched.

The arc piece 31 is equipped with four to the interval between two liang is greater than the size of arc piece 31, and it should be noted that, the concrete quantity of arc piece 31 does not do not specifically limit in the application reality, and here set up four and consider from manufacturing cost's direction, and the skilled artisan can set up the arc piece 31 number of different quantity according to actual brazing needs, and interval between two liang is greater than arc piece 31 and is convenient for have the clearance after two anchor clamps are pegged graft, and the heat in the stove of being convenient for gets into inside, improves the effect of brazing.

The middle part of the assembly positioning groove 2 is provided with an annular heat conduction hole 21, and the annular heat conduction hole 21 not only can facilitate the conduction of heat of a brazing furnace, but also can reduce the material cost of the whole fixture.

The foregoing examples merely illustrate certain embodiments of the utility model and are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that it is possible for a person skilled in the art to make several variants and modifications without departing from the concept of the utility model, all of which fall within the scope of protection of the utility model; accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (6)

1. A whole tube brazing clamp for a ceramic discharge tube is characterized in that: the novel pipe shell positioning device comprises an annular positioning block (1), wherein an assembly positioning groove (2) is formed in the middle of one end of the annular positioning block (1), a pipe shell positioning block (3) is arranged outside the assembly positioning groove (2), and the pipe shell positioning block (3) and the assembly positioning groove (2) are of concentric ring structures.

2. The whole tube brazing jig for ceramic discharge tubes as claimed in claim 1, wherein: the annular positioning block (1) and the tube shell positioning block (3) are integrally formed.

3. The whole tube brazing jig for ceramic discharge tubes as claimed in claim 1, wherein: the clamp materials of the annular positioning block (1) and the pipe shell positioning block (3) are 1Cr18Ni9Ti stainless steel.

4. The whole tube brazing jig for ceramic discharge tubes as claimed in claim 1, wherein: the pipe shell positioning block (3) comprises a plurality of arc-shaped blocks (31) which are uniformly arranged at intervals.

5. The whole tube brazing jig for ceramic discharge tubes as recited in claim 4, wherein: the number of the arc-shaped blocks (31) is four, and the interval between every two arc-shaped blocks is larger than the size of the arc-shaped blocks (31).

6. The whole tube brazing jig for ceramic discharge tubes as claimed in claim 1, wherein: an annular heat conduction hole (21) is formed in the middle of the assembly positioning groove (2).