CN2557813Y

CN2557813Y - Hydrogen-oxygen flame burner for quartz glass

Info

Publication number: CN2557813Y
Application number: CN 02263005
Authority: CN
Inventors: 梁乐天
Original assignee: Jiangsu Fasten Photonics Co ltd
Current assignee: Jiangsu Fasten Photonics Co ltd
Priority date: 2002-07-10
Filing date: 2002-07-10
Publication date: 2003-06-25
Anticipated expiration: 2012-07-10

Abstract

Disclosed is a quartz glass hydroxide flame burner. Five to eight single-mouth quartz blowtorches are uniformly distributed in an intermediate arc; the center of the intermediate arc, namely, the flame focus of the blowtorches is designed at the position from the center of a mother rod to one-third of the diameter of the mother rod; the single-mouth blowtorches are inserted into a sealed metal lamp holder which adopts an ball-joint connection and can freely adjust the lamp head at 360 degrees. The radius of the intermediate arc is about 20-30 cm. The utility model follows the Magnus law and the heated fiber mother rod should be evenly enveloped by flame to achieve uniform heating. The flame focus of the blowtorches is design in the center of the mother rod (230 mm) or at the position of one-third of the diameter of the mother rod.

Description

A kind of Hydrogen-oxygen flame burner of quartz glass

One, technical field

The utility model relates to a kind of quartz glass Hydrogen-oxygen flame burner structure of (being called for short quartzy blowtorch).

Two, technical background

Existing Hydrogen-oxygen flame burner (being called for short quartzy blowtorch) is mainly used in a preform (being the female rod of optical fiber) and the welding at high temperature of quartz glass tail rod, and female rod that welding is good just enters wire-drawing process, finishes the manufacturing of fiber products.Optical fiber light communications belongs to optical fiber and makes the field.

Blowtorch of the present utility model is the core apparatus in female excellent welding, in addition, also has the function that female rod is polished and anneals.Polish female rod and can remove surface impurity, strengthen fiber strength, female rod of annealing can be eliminated its internal stress, prevents that female rod from bursting, and causes waste.External some factory adopts the metal blowtorch, as the Arnold spy (Anold) of Germany, U.S.'s Lipton (Litton) etc., the metal blowtorch is easy to generate metal oxide under the situation of high temperature heating, can move the surface of contamination at the female rod of optical fiber with blowtorch, cause the disconnected fine increase of optical fiber, influence intensity.

The manufacturing of the female rod of optical fiber is to belong to product technology-intensive, complex process, commercialization.Its typical products is of a size of external diameter: 60mm, length 1m approximately can draw about 200 kilometers of optical fiber.The external diameter of optical fiber is 125 microns, and per 27 gram optical wands can drawing optical fiber length 1 kilometer.In view of the excellent price of mother is comparatively expensive, tow in order to make full use of mother metal, just therefore adopt the method for adjunction tail rod to solve, obtained satisfied effect.Because the tail bar material also is a quartz glass, similar with female rod, so the coefficient of expansion is complementary.Therefore quartz glass Hydrogen-oxygen flame burner (being called for short quartzy blowtorch) is the indispensable device in the fibre-optical drawing.

Yet also there is the lack of homogeneity of flame in existing quartzy Hydrogen-oxygen flame burner, can influence the quality of quartzy blowtorch welding, polishing operation.

The following describes the main points of using quartzy blowtorch welding, polishing operation:

1, centering: in the two ends claw of the horizontal glass lathe of special use, load onto female rod and tail rod adjusting centering.

2, welding: to about each 10cm place, two kinds of excellent welding positions, use blowtorch, move back and forth back and forth, high temperature heating (approximately 2100-2200 ℃) about 8-10 minute, fully the fusion connecting portion touches female rod and tail rod when the time comes and is welding together, if welding is insufficient, can cause the fracture of connecting portion.

3, annealing: in order to eliminate the stress that causes in connecting portion Yin Gaowen heating, use quartzy blowtorch of the present utility model, control its flame temperature (under the lower temperature) and toast and got final product in about 5-8 minute.

4, adjunction auxiliary tail rod:, as supporting usefulness, its objective is to be convenient female rod polishing that method is with 2 at the other end adjunction auxiliary tail rod of female rod.

5, female rod polishing: for removing surface impurity and micro-crack, female rod is carried out the polishing of an overall length, control oxyhydrogen flow, quartzy blowtorch move speed, the high temperature heating are carried out on the excellent surface of mother, greatly about about 2000-2100 ℃.

6, unload rod: quartz lamp head is moved on to auxiliary tail light fitting place, and heating (burning soft) after 1 minute moves deck outward, shuts down, and treats that unloading rod after cold finishes.

Three, summary of the invention

The purpose of this utility model is: a kind of Hydrogen-oxygen flame burner of quartz glass is provided, and especially oxyhydrogen flame is even, guarantees quartzy blowtorch welding, polishing operation quality.

The purpose of this utility model is achieved in that a kind of Hydrogen-oxygen flame burner of quartz glass, use 5-8 to prop up and singly chew quartzy blowtorch, five equilibrium is uniform in middle circular arc, the center of circle of middle circular arc is center to the 1/3 female excellent diameter place of the flame focus design of blowtorch at female rod, singly chew the metal lamp holder that blowtorch inserts sealing, metal lamp holder adopts ball-joint to connect, can 360 degree regulated at will to lamp holder.The radius of middle circular arc approximately is 20-30cm.

Further improvement of the utility model is: prop up at 5-8 and singly chew the blowtorch design that quartzy blowtorch uses A, two kinds of models of B respectively.A type blowtorch (see figure 2) single tube 7 cores, 6 wick circuluses of 1 SMIS are uniform.Type B blowtorch (see figure 3) single tube 5 cores, 4 wick circuluses of 1 SMIS are uniform.

Characteristics of the present utility model are: this installs quartzy blowtorch and is to use oxyhydrogen flame, has had three kinds of functions of welding, polishing and annealing, has satisfied above-mentioned operation and will put 2,3,4,5 condition.Its index is controlled temperature range: 1000-2300 ℃, hot-zone width: 10-100mm.All can satisfy technological requirement, the good uniformity of flame.

The blowtorch the selection of material of this device is a quartz glass.Its advantage be high temperature resistant, hardness is high, impurity is few, easy making, its cost is 1/4 of a metal blowtorch, it has the machining accuracy height, the advantage that volume is little is used through practice contrast, the quartzy blowtorch of this device is obtained obvious excellent results in the processing operation.

The utility model blowtorch has been followed the Magnus law, and the female rod of heated optical fiber should reach even heating equably by the flame envelope.The flame focus design of blowtorch is seen Fig. 1 in center (230mm) or 1/3 female excellent diameter place of female rod.Quartzy blowtorch gas flow shown in Figure 4 pressure-distribution measurement shows that the flame focus of blowtorch is concentrated.

This device uses 5-8 to prop up and singly chews quartzy blowtorch, and five equilibrium is uniform in middle circular arc, singly chews the metalized lamp base metal lamp holder employing ball-joint connection that blowtorch inserts sealing, can 360 degree regulated at will to lamp holder.Prop up at 5-8 and singly to chew the blowtorch design that quartzy blowtorch uses A, two kinds of models of B respectively.

To using the even rod of welding diameter 60mm, the blowtorch of the design's utility model is carried out the gas flow Determination of distribution, see Fig. 4.A type blowtorch (see figure 2) single tube 7 cores, 1 SMIS, 6 wick circuluses are uniform, and the core caliber is crossed 0.9mm.

Four, description of drawings

Fig. 1 is the utility model structural representation

Fig. 2 chews quartzy blowtorch cross section (Fig. 2 A) and overlooks (Fig. 2 B) structural representation for the utility model A type list

Fig. 3 chews quartzy blowtorch cross section (Fig. 3 A) and overlooks (Fig. 3 B) structural representation for the utility model Type B list

Fig. 4 carries out the gas flow Determination of distribution for the utility model, and the center of circle is the center of female rod, and concentric circles is the isobaric line of force.

1 is workpiece to be machined shown in the figure---the female rod of optical fiber, and 2 promptly singly chew quartzy blowtorch (A, Type B) shown in the figure, and 3 is the ball-joint of blowtorch support shown in the figure, and 4 is quartzy blowtorch unsplit bedplate shown in the figure.SMIS 5, wick 6.

Five, the specific embodiment

The Hydrogen-oxygen flame burner of present embodiment quartz glass, use 6 and singly chew quartzy blowtorch, five equilibrium is uniform in the middle circular arc of the about 25cm of radius, the center of circle of middle circular arc is the center of the flame focus design of blowtorch at female rod, singly chew the metal lamp holder that blowtorch inserts sealing, metal lamp holder adopts ball-joint to connect, can 360 degree regulated at will to lamp holder.

Singly chew the blowtorch design that quartzy blowtorch uses A, two kinds of models of B respectively at 6.A type blowtorch (see figure 2) single tube 7 cores, 6 wick circuluses of 1 SMIS are uniform, and the core caliber is 0.9mm.Type B blowtorch (see figure 3) single tube 5 cores, 4 wick circuluses of 1 SMIS are uniform, core caliber 1.3mm.

A type list is chewed torch flame and is comprised that face is big, and the high-temperature region is wide, and Fig. 2 is seen in the outside that is used in blowtorch.

The Type B list chews that the blowtorch wick is few, and flame focuses on easily, is used in the inside of blowtorch, sees Fig. 3.

Claims

1, a kind of Hydrogen-oxygen flame burner of quartz glass, it is characterized in that propping up and singly chew quartzy blowtorch with 5-8, five equilibrium is uniform in a middle circular arc, the center of circle of middle circular arc is center to the 1/3 female excellent diameter place of the flame focus design of blowtorch at female rod, singly chew the metal lamp holder that blowtorch inserts sealing, metal lamp holder adopts ball-joint to connect.

2, by the Hydrogen-oxygen flame burner of the described quartz glass of claim 1, it is characterized in that the described blowtorch that quartzy blowtorch uses two kinds of structures respectively of singly chewing, a kind of blowtorch single tube 7 cores, 6 wick circuluses of 1 SMIS are uniform, another kind of blowtorch single tube 5 cores, 4 wick circuluses of 1 SMIS are uniform.

3, by the Hydrogen-oxygen flame burner of the described quartz glass of claim 1, the radius of circular arc is 20-30cm in it is characterized in that.

4, by the Hydrogen-oxygen flame burner of the described quartz glass of claim 1, it is characterized in that being used in the outside of blowtorch at single tube 7 core blowtorch, single tube 5 core blowtorch are used in the inside of blowtorch.