CN104556645A - Quartz glass tube for hermetically storing easily oxidized material - Google Patents

Abstract

The invention discloses a quartz glass tube for hermetically storing an easily oxidized material. The quartz glass tube comprises a main glass tube (1), wherein a small glass tube (3) is arranged at the tube orifice of the main glass tube (1), the main glass tube (1) is connected with the small glass tube (3) in a calcining adhesive manner at a sealing opening (2) and the length L1 of the calcining adhesive connection is 3-5cm; 1-2cm main glass tube (1) located at the tube orifice end of the main glass tube (1) and the small glass tube (3) are not calcined and adhered; the length L2 of one end, extending inside the sealing opening (2) of the main glass tube (1), of the small glass tube (3) is 2-4cm; the length L3 of the other end, extending out of the tube orifice of the main glass tube (1), of the small glass tube (3) is 6-10cm; and the other end of the main glass tube (1) and a sealing tube are directly calcined or sleeves the small glass tube (3) and is connected with the sealing tube in the calcining adhesive manner. The quartz glass tube is safe and reliable, simple and practical and low in cost.

Description

A kind of quartz glass tube for sealing oxidizable materials up for safekeeping

Technical field

The present invention relates to a kind of Glass tubing, particularly relate to a kind of quartz glass tube can sealing oxidizable materials after carrying out vacuum-pumping and sealing for a long time up for safekeeping.

Background technology

In current material laboratory, when needs carry out sealing oxidizable materials up for safekeeping, or carrying out high temperature melting sample etc. is all adopt quartz glass tube splendid attire material sample.High temperature resistant quartz glass tube (being exactly the type that we are commonly used to vacuumize approved sample) price sold in the market is between 50 to one hundred yuan of per kilograms.But the quartz glass tube that caliber is larger, under vacuum conditions during tube sealing, sealing part at high operating temperatures easily the pressure that produces by inside and outside pressure difference rack; The general method of head it off when producing heavy caliber silica tube, tube wall is thickeied, but this can increase the weight of silica tube, improve purchase cost, or adopt the oxyhydrogen flame of higher temperature to calcine quartz glass tube, but use the environmental requirement of oxyhydrogen flame harsher, prohibit the use oxyhydrogen flame in common laboratory.Therefore, market is badly in need of a kind of cost low, simple and practical, can ensure to vacuumize quality, the quartz glass tube of oxidizable materials can be sealed for a long time up for safekeeping.

When this technology solves and needs to use Large Diameter Pipeline silica tube in testing or producing, the pipe without wall thickness also successfully can vacuumize quality vacuumizing the problem of tube sealing under state and ensure that; Solve the danger using oxyhydrogen flame to face, adopt conventional oxy-acetylene flame to encapsulate and reduce the cost buying silica tube.

Summary of the invention

The object of the invention is to for the deficiencies in the prior art, provide a kind of cost low, also without the pipe of wall thickness can successfully vacuumize the problem of tube sealing under state and ensure that the quartz glass tube for sealing oxidizable materials up for safekeeping vacuumizing quality, adopt conventional oxy-acetylene flame to encapsulate.

To achieve these goals, present invention employs following technical scheme: a kind of quartz glass tube for sealing oxidizable materials up for safekeeping, comprise main Glass tubing, it is characterized in that: be provided with a cuvette at the mouth of pipe of main Glass tubing, main Glass tubing and cuvette calcine adhering junction at sealing part.

Described main Glass tubing and cuvette calcine the length L of adhering junction at sealing part₁be 3 ~ 5cm.

The nose end of described main Glass tubing has the main Glass tubing of 1 ~ 2cm not calcine with cuvette to bond.

One end of described cuvette extends the length L becoming owner of the sealing part of Glass tubing₂be 2 ~ 4cm.

The other end of described cuvette extends the length L of the main Glass tubing mouth of pipe₃be 6 ~ 10cm.Reserve this length, can so that vacuumize in insertion rubber hose.

The other end dinectly bruning tube sealing of described main Glass tubing, or calcine adhering junction tube sealing after packing into cuvette equally.When the other end of main Glass tubing also arranges cuvette, effectively can to reduce when putting into sample the impact at the bottom of main Glass tubing pipe, avoid breaking of main Glass tubing.

The technical process be applied in laboratory of the present invention is:

1. first main Glass tubing large for bore is cut into desired length, wherein one end is first with high temperature acetylene flame calcining sealing;

2. load and need the sample carrying out vacuum protection;

3. drawing-down under the state of one of the other end also do not sealed section of Glass tubing being calcined at acetylene flame, makes its bore diminish;

4. preprepared cuvette (retaining a part outside) is put into toward small-bore one end;

5. calcine with to main Glass tubing small-bore one section of acetylene flame, and carry out trombone slide with special tweezers, main Glass tubing and cuvette are bonded together;

6. for ensure bonding place air tight, can bonding place draw more tiny;

7. other one end of cuvette is inserted in rubber hose, vacuumize with mechanical pump;

8. after having taken out vacuum, carry out tube sealing with acetylene flame calcining bonding place.

Compared with prior art, the beneficial effect that possesses of the present invention:

1. selection is convenient, and cost is low.Without the need to use the thickening silica glass of higher cost can solve under vacuum conditions tube sealing time, sealing part at high operating temperatures easily the pressure that produces by inside and outside pressure difference rack this problem.

2. simple and practical, safe and reliable, vacuumizing quality good, oxidizable sample can be sealed for a long time up for safekeeping, adopting conventional oxy-acetylene flame to encapsulate when calcining.

Accompanying drawing explanation

Fig. 1 is the structural representation before the non-tube sealing of one embodiment of the invention.

Fig. 2 is the structural representation before the non-tube sealing of another embodiment of the present invention.

Fig. 3 is the structural representation after one embodiment of the invention tube sealing.

Reference numeral: main Glass tubing 1, sealing part 2, cuvette 3.

Embodiment

Below in conjunction with embodiment and accompanying drawing, the present invention will be further described.

Embodiment 1:

As shown in drawings, one comprising main Glass tubing 1 for sealing the quartz glass tube of oxidizable materials up for safekeeping, being provided with a cuvette 3 at the mouth of pipe of main Glass tubing 1, and main Glass tubing 1 and cuvette 3 calcine adhering junction at sealing part 2; Main Glass tubing 1 and cuvette 3 calcine the length L of adhering junction at sealing part 2₁for 3cm; The nose end of main Glass tubing 1 has the main Glass tubing 1 of 1cm not calcine with cuvette 3 to bond; One end of cuvette 3 extends the length L becoming owner of the sealing part 2 of Glass tubing 1₂for 2cm; The other end of cuvette 3 extends the length L of main Glass tubing 1 mouth of pipe₃for 6cm; At the other end dinectly bruning tube sealing of main Glass tubing 1.

Embodiment 2:

As shown in drawings, one comprising main Glass tubing 1 for sealing the quartz glass tube of oxidizable materials up for safekeeping, being equipped with a cuvette 3 at the two ends mouth of pipe of main Glass tubing 1, and main Glass tubing 1 and cuvette 3 calcine adhering junction at sealing part 2; In one end of main Glass tubing 1, main Glass tubing 1 and cuvette 3 calcine the length L of adhering junction at sealing part 2₁for 5cm, the nose end of main Glass tubing 1 has the main Glass tubing 1 of 2cm not calcine with cuvette 3 to bond, and one end of cuvette 3 extends the length L becoming owner of the sealing part of Glass tubing 1₂for 4cm, the other end of cuvette 3 extends the length L of main Glass tubing 1 mouth of pipe₃for 10cm; At the other end of main Glass tubing 1, the length that main Glass tubing 1 and cuvette 3 calcine adhering junction at sealing part 2 is 1cm, and one end of cuvette 3 extends the length L becoming owner of the sealing part 2 of Glass tubing 1₂for 1cm.

Embodiment 3:

As shown in drawings, one comprising main Glass tubing 1 for sealing the quartz glass tube of oxidizable materials up for safekeeping, being provided with a cuvette 3 at the mouth of pipe of main Glass tubing 1, and main Glass tubing 1 and cuvette 3 calcine adhering junction at sealing part 2; Main Glass tubing 1 and cuvette 3 calcine the length L of adhering junction at sealing part 2₁for 4cm; The nose end of described main Glass tubing 1 has the main Glass tubing 1 of 1.5cm not calcine with cuvette 3 to bond; One end of cuvette 3 extends the length L becoming owner of the sealing part 2 of Glass tubing 1₂for 3cm; The other end of cuvette 3 extends the length L of main Glass tubing 1 mouth of pipe₃for 8cm; At the other end dinectly bruning tube sealing of main Glass tubing 1.

The technical process be applied to by above-mentioned quartz glass tube in laboratory is:

1. first main Glass tubing large for bore is cut into desired length, wherein one end is first with high temperature acetylene flame calcining sealing;

2. load and need the sample carrying out vacuum protection;

3. drawing-down under the state of one of the other end also do not sealed section of Glass tubing being calcined at acetylene flame, makes its bore diminish;

4. preprepared cuvette (retaining a part outside) is put into toward small-bore one end;

5. calcine with to main Glass tubing small-bore one section of acetylene flame, and carry out trombone slide with special tweezers, main Glass tubing and cuvette are bonded together;

6. for ensure bonding place air tight, can bonding place draw more tiny;

7. other one end of cuvette is inserted in rubber hose, vacuumize with mechanical pump;

8. after having taken out vacuum, carry out tube sealing with acetylene flame calcining bonding place.

Claims (6)

1. one kind for sealing the quartz glass tube of oxidizable materials up for safekeeping, comprise main Glass tubing (1), it is characterized in that: be provided with a cuvette (3) at the mouth of pipe of main Glass tubing (1), main Glass tubing (1) and cuvette (3) are in sealing part (2) calcining adhering junction.

2. the quartz glass tube for sealing oxidizable materials up for safekeeping according to claim 1, is characterized in that: described main Glass tubing (1) and cuvette (3) calcine the length L of adhering junction at sealing part (2)₁be 3 ~ 5cm.

3. the quartz glass tube for sealing oxidizable materials up for safekeeping according to claim 1, is characterized in that: the nose end of described main Glass tubing (1) has the main Glass tubing (1) of 1 ~ 2cm not calcine with cuvette (3) to bond.

4. the quartz glass tube for sealing oxidizable materials up for safekeeping according to claim 1, is characterized in that: one end of described cuvette (3) extends the length L becoming owner of the sealing part (2) of Glass tubing (1)₂be 2 ~ 4cm.

5. the quartz glass tube for sealing oxidizable materials up for safekeeping according to claim 1 or 4, is characterized in that: the other end of described cuvette (3) extends the length L of main Glass tubing (1) mouth of pipe₃be 6 ~ 10cm.

6. the quartz glass tube for sealing oxidizable materials up for safekeeping according to claim 1-4, is characterized in that: the other end dinectly bruning tube sealing of described main Glass tubing (1), or packing into cuvette (3) equally calcines adhering junction tube sealing afterwards.