CN201770743U - Sealing device of bright annealing furnace - Google Patents
Sealing device of bright annealing furnace Download PDFInfo
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- CN201770743U CN201770743U CN 201020266592 CN201020266592U CN201770743U CN 201770743 U CN201770743 U CN 201770743U CN 201020266592 CN201020266592 CN 201020266592 CN 201020266592 U CN201020266592 U CN 201020266592U CN 201770743 U CN201770743 U CN 201770743U
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- bright annealing
- gel plate
- annealing furnace
- tightness system
- diameter
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Abstract
The utility model discloses a sealing device of a bright annealing furnace. The sealing device comprises a movable flange cover, a fixed flange and a silica gel plate, wherein the silica gel plate is fixedly arranged between the movable flange cover and the fixed flange; a passing hole is formed on the silica gel plate; and the diameter of the passing hole is less than the nominal diameter of a workpiece. Due to the adoption of the structural design, high sealing property is achieved, insufficient protective atmosphere caused by hydrogen leakage in the bright annealing furnace can be effectively prevented, the thermal treatment quality of a product is improved, meanwhile, safe running of equipment is guaranteed and the potential safety hazard of the bright annealing furnace is basically avoided. The device has the advantages of simple structure, low manufacturing cost and the like, is easy to assemble, is not sensitive to dimensional deviation of the workpiece, has high applicability, reduces replacement of a great number of original sealing materials and saves the using cost and the maintenance cost of the equipment.
Description
Technical field
The utility model relates to field of mechanical technique, relates in particular to a kind of tightness system that is applied to the bright annealing oven of stainless steel welded pipe.
Background technology
Bright annealing oven is an Equipment for Heating Processing important in the stainless steel welded pipe online production.So-called clean annealing is exactly that stainless steel welded pipe is heat-treated in protective atmosphere, and the welded tube after the thermal treatment does not have oxidized, so claim not oxidizing annealing again.Clearly stipulate in the standard GB/T24593-2009 of relevant boiler and heat exchanger usefulness austenitic stainless steel Welded Steel Pipe: steel pipe should be delivered goods through thermal treatment and pickling, but through the heat treated steel pipe of protective atmosphere, can deliver goods without pickling.This proves absolutely that through the welded tube that clean annealing is handled, surface quality holds good security, and can save further pickling operation, has so promptly reduced the pollution to environment, has also avoided the injury to workman's health.
The principle of work of bright annealing oven is to adopt high-frequency induction and hydrogen burning to heat welded tube.Because it is inflammable and explosive that hydrogen has, therefore, the sealing effectiveness of hydrogen is just concerning the security of bright annealing oven and the quality of product.
As shown in Figure 1, bright annealing oven 1 of the prior art is used for welded tube 5 is done thermal treatment, and arrow is depicted as the direct of travel of welded tube 5 among Fig. 1.The two ends of bright annealing oven 1 all can be provided with tightness system, the sealing device was mainly covered for 2 (as shown in Figure 2), is with externally threaded taper bakelite 3 (as shown in Figure 3) of cover and a mounting flange 4 to form by a tapped loose flange, and mounting flange 4 is fixedlyed connected with bright annealing oven 1.The sealing device mainly utilizes taper bakelite cover 3 air that hydrogen in the bright annealing oven 1 and stove is outer to separate, and prevents at stove internal heating and moving welded tube oxidizedly, prevents from also that the interior hydrogen of stove from combining with oxygen in the stove outer air to blast.
In actual production, nitrogen is general only as the furnace air displacement, be not to operate as separation gas, so isolating seal can only rely on taper bakelite tightness system.Because welded tube itself has positive and negative deviation, add the continuous wearing and tearing of welded tube on-line operation, sealing effectiveness is not good in actual use as the tightness system of sealing material with bakelite, has both influenced quality product, has more serious potential safety hazard again.And the bakelite material also needs to change more continually, has increased workman's workload, has improved production cost.
Therefore, those skilled in the art is devoted to develop a kind of tightness system of bright annealing oven of good seal performance.
The utility model content
Because the above-mentioned defective of prior art, technical problem to be solved in the utility model provides a kind of tightness system of bright annealing oven of good seal performance.
For achieving the above object, the utility model provides a kind of tightness system of bright annealing oven, comprises the loose flange lid, reaches a mounting flange; Also comprise a silica-gel plate, be fixedly installed between described loose flange lid and the described mounting flange, offer one on the described silica-gel plate and cross aperture of door.
In concrete enforcement, the described nominal diameter of crossing the diameter of aperture of door less than workpiece.Further, the described diameter of aperture of door of crossing is less than described workpiece nominal diameter 0.3mm to 0.6mm.
In concrete enforcement, described mounting flange is fixedlyed connected with described bright annealing oven.Described loose flange lid removably connects with described mounting flange.
In concrete enforcement, the thickness of described silica-gel plate is 6-10mm.Further, the thickness of described silica-gel plate is 8mm.
The utility model has obtained excellent sealing performance owing to adopt the said structure design, can effectively prevent the protective atmosphere deficiency that causes because of hydrogen gas leakage in the bright annealing oven, has improved the thermal treatment quality of product.
Simultaneously, owing to have excellent sealing performance, the utility model has guaranteed the safe operation of equipment, has stopped the potential safety hazard of bright annealing oven substantially.
The utility model also has beneficial effects such as simple in structure, that cost of manufacture is low, assembling is easy, and insensitive to the size deviation of workpiece, suitability is strong.
The utility model has also reduced a large amount of replacings of original sealing material, has saved the use and the maintenance cost of equipment.
Be described further below with reference to the technique effect of accompanying drawing, to understand the purpose of this utility model, feature and effect fully design of the present utility model, concrete structure and generation.
Description of drawings
Fig. 1 is the concrete application structure synoptic diagram of the tightness system of a bright annealing oven in the prior art;
Fig. 2 is the structural representation of tapped loose flange lid among Fig. 1;
Fig. 3 is the structural representation that overlaps with externally threaded taper bakelite among Fig. 1;
Fig. 4 is the concrete application structure synoptic diagram of the utility model one preferred embodiment;
Fig. 5 is the structural representation of silica-gel plate among Fig. 4;
Fig. 6 is the structural representation of loose flange lid among Fig. 4.
Embodiment
As shown in Figure 4, the utility model one specific embodiment is applied to the hydrogen seal device of bright annealing oven.
The principle of work of bright annealing oven and workflow are prior art, and this paper repeats no more.
Used two cover sealing devices in the present embodiment, be separately positioned on the two ends of bright annealing oven 1, every suit tightness system comprises loose flange lid 2, one silica-gel plates 3, and a mounting flange 4.
Wherein, be fixed together through technique means such as welding between mounting flange 4 and the bright annealing oven 1.
2 (as shown in Figure 6) of loose flange lid removably connect with mounting flange 4 by bolt or screw, are that equal power is locked in working order between the two.
One thickness is that the silica-gel plate 3 (as shown in Figure 5) of 8mm is fixedly installed between loose flange lid 2 and the mounting flange 4, and silica-gel plate 3 is joined brill with loose flange lid 2, mounting flange 4.
The silica-gel plate that 8mm is thick generally has the above tensile strength of 7Mpa, and the high temperature that ability is about 200 ℃ has high impart tear; And ageing-resistant, corrosion-resistant, elasticity is strong, can satisfy the technical requirements of online welded tube bright annealing oven sealing material.
Offer one on the silica-gel plate 3 and cross aperture of door 31, be used for welded tube 5 (workpiece) and pass above-mentioned two flanges.
Cross the nominal diameter of the diameter of aperture of door 31, be preferably the nominal diameter 0.5mm of the diameter of aperture of door 31 less than welded tube 5 less than corresponding welded tube 5.
The diameter of crossing aperture of door 31 on the silica gel sheet 3 then can well contain the negative deviation of welded tube 5 less than welded tube 5 nominal diameter 0.5mm.Because the silica-gel plate material has good elasticity,, can not influence the on-line operation of welded tube so welded tube 5 under the situation of plus deviation, also can form good sealing.
Compare with bakelite tightness system of the prior art, the leakage of hydrogen of the present utility model is very little, and the replacing that reduces sealing material durable in use.
In different concrete enforcement, also can be according to the different diameter of welded tube, the diameter of selecting aperture of door 31 substantially also can satisfy technical requirements less than welded tube 5 nominal diameter 0.3mm to 0.6mm.
In other concrete enforcement, the thickness of silica-gel plate 3 can be chosen as 6-10mm.
More than describe preferred embodiment of the present utility model in detail.The ordinary skill that should be appreciated that this area need not creative work and just can make many modifications and variations according to design of the present utility model.Therefore, all technician in the art comply with design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in claim protection domain of the present utility model.
Claims (7)
1. the tightness system of a bright annealing oven comprises the loose flange lid, reaches a mounting flange; It is characterized in that: also comprise a silica-gel plate, be fixedly installed between described loose flange lid and the described mounting flange, offer one on the described silica-gel plate and cross aperture of door.
2. tightness system as claimed in claim 1 is characterized in that: the described nominal diameter of crossing the diameter of aperture of door less than workpiece.
3. tightness system as claimed in claim 2 is characterized in that: the described diameter of aperture of door of crossing is less than described workpiece nominal diameter 0.3mm to 0.6mm.
4. tightness system as claimed in claim 1 is characterized in that: described mounting flange is fixedlyed connected with described bright annealing oven.
5. tightness system as claimed in claim 1 is characterized in that: described loose flange lid removably connects with described mounting flange.
6. tightness system as claimed in claim 1 is characterized in that: the thickness of described silica-gel plate is 6-10mm.
7. tightness system as claimed in claim 6 is characterized in that: the thickness of described silica-gel plate is 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020266592 CN201770743U (en) | 2010-07-22 | 2010-07-22 | Sealing device of bright annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020266592 CN201770743U (en) | 2010-07-22 | 2010-07-22 | Sealing device of bright annealing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201770743U true CN201770743U (en) | 2011-03-23 |
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ID=43750582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020266592 Expired - Fee Related CN201770743U (en) | 2010-07-22 | 2010-07-22 | Sealing device of bright annealing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201770743U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160672A (en) * | 2011-12-14 | 2013-06-19 | 溧阳市四方不锈钢制品有限公司 | Online brightness solid solution machine for stainless steel welding tube |
| CN103160673A (en) * | 2011-12-14 | 2013-06-19 | 溧阳市四方不锈钢制品有限公司 | Stainless steel welded pipe bright solid solution processing device |
| CN109707986A (en) * | 2017-10-25 | 2019-05-03 | 无锡天辰冷拉型钢有限公司 | A kind of Annealing Protection pipe |
-
2010
- 2010-07-22 CN CN 201020266592 patent/CN201770743U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160672A (en) * | 2011-12-14 | 2013-06-19 | 溧阳市四方不锈钢制品有限公司 | Online brightness solid solution machine for stainless steel welding tube |
| CN103160673A (en) * | 2011-12-14 | 2013-06-19 | 溧阳市四方不锈钢制品有限公司 | Stainless steel welded pipe bright solid solution processing device |
| CN103160672B (en) * | 2011-12-14 | 2016-03-16 | 溧阳市四方不锈钢制品有限公司 | The online bright Solid solution machine of stainless steel welded pipe |
| CN103160673B (en) * | 2011-12-14 | 2016-08-03 | 溧阳市四方不锈钢制品有限公司 | Stainless steel welded pipe light solutionizing processing means |
| CN109707986A (en) * | 2017-10-25 | 2019-05-03 | 无锡天辰冷拉型钢有限公司 | A kind of Annealing Protection pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20130722 |