CN205805100U - Air hermetic preserved contact net tubular steel post - Google Patents
Air hermetic preserved contact net tubular steel post Download PDFInfo
- Publication number
- CN205805100U CN205805100U CN201620582129.2U CN201620582129U CN205805100U CN 205805100 U CN205805100 U CN 205805100U CN 201620582129 U CN201620582129 U CN 201620582129U CN 205805100 U CN205805100 U CN 205805100U
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- tubular steel
- steel post
- contact net
- sealing
- air
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Abstract
This utility model relates to electric railway technology, in particular to air hermetic preserved contact net tubular steel post.The end sealing of this tubular steel post cylinder is fixed with the first ring flange, and the first ring flange detachable-type sealed connects seal cap, and sealing covers and arranges two valves, valve arranges sealed valve；The bottom end seal of cylinder is fixed with galvanized sheet, and galvanized sheet arranges outage, and outage is less than the cross sectional inner diameter of tubular steel post, and outage is furnished with sealing plate.The two ends treating zinc-plated tubular steel post are arranged sealing lid, sealing plate by this utility model, after galvanizing by dipping completes, by inner air is extracted out and is filled with nitrogen or not with zinc, the gas of ferrum generation oxidation reaction, to reduce internal oxygen and moisture, greatly reduce the purpose of its internal oxidation speed.
Description
Technical field
This utility model relates to electric railway technology, in particular to air hermetic preserved contact net tubular steel post.
Background technology
Existing steel pipe support for contact network uses inside and outside galvanizing by dipping anticorrosion, and pillar is integrally placed at galvanized bath, in pillar both sides
If zinc-plated steam vent, it is ensured that the internal galvanizing flux of pillar and gas can be discharged smoothly, zinc-plated complete after, capital steam vent is not carried out
Closure, pillar inside and outside atmosphere UNICOM, seriously corroded local easily causes corrosion, and cannot observe.
Utility model content
The purpose of this utility model is to provide a kind of air hermetic preserved contact net tubular steel post, to solve to limit internal corruption
Erosion, the problem of isolation etchant gas.
This utility model relates to a kind of air hermetic preserved contact net tubular steel post, and the end sealing of its cylinder is fixed with first
Ring flange, described first ring flange detachable-type sealed connects seal cap, and described sealing covers and arranges two valves, described valve
On sealed valve is set；The bottom end seal of described cylinder is fixed with galvanized sheet, and described galvanized sheet arranges outage, described discharge opeing
Hole is less than the cross sectional inner diameter of described tubular steel post, and described outage is furnished with sealing plate.
In certain embodiments, be preferably, described seal lid lid mouth the second ring flange is set, at the bottom of described lid on arrange two
Individual described valve.
In certain embodiments, it is preferably, between described first ring flange and described second ring flange, tetrafluoro packing ring is set.
In certain embodiments, being preferably, described valve is right-angle valve.
In certain embodiments, it is preferably, in the inner tube of described tubular steel post, is filled with non-oxidized gas.
In certain embodiments, being preferably, described non-oxidized gas is preferably nitrogen.
The air hermetic preserved contact net tubular steel post that this utility model embodiment provides, compared with prior art, by be plated
The two ends of zinc tubular steel post arrange sealing lid, sealing plate, after galvanizing by dipping completes, by being extracted out by inner air and being filled with nitrogen
Or not with zinc, the gas of ferrum generation oxidation reaction, to reduce internal oxygen and moisture, greatly reduce its internal oxidation
The purpose of speed.
Accompanying drawing explanation
Fig. 1 be in one embodiment of this utility model when angle is observed the structure of air hermetic preserved contact net tubular steel post
Schematic diagram；
Fig. 2 be in one embodiment of this utility model when another angle is observed air hermetic preserved contact net tubular steel post
Structural representation；
Fig. 3 is the preparation method step signal of air hermetic preserved contact net tubular steel post in one embodiment of this utility model
Figure.
Note: 1 first ring flange；2 cylinders；3 second ring flanges；At the bottom of 4 lids；5 sealed valves；6 galvanized sheets；7 outages.
Detailed description of the invention
Combine accompanying drawing below by specific embodiment this utility model is described in further detail.
Using in inside and outside galvanizing by dipping anticorrosion in view of existing steel pipe support for contact network, pillar is internal to be joined with outside atmosphere
Logical, cause pillar internal corrosion serious, the problem of poor durability, this utility model provides air hermetic preserved contact net steel pipe and props up
Post.
A kind of air hermetic preserved contact net tubular steel post, the end sealing of its cylinder is fixed with the first ring flange, the first method
Blue dish is tightly connected and seals lid, and sealing covers and arranges two valves, and valve arranges sealed valve, and the first ring flange covers with sealing
Connected by flange seal；The bottom end seal of cylinder is fixed with galvanized sheet, and galvanized sheet arranges outage, and outage is furnished with sealing
Plate.
The two ends treating zinc-plated tubular steel post are arranged sealing lid, sealing plate, after galvanizing by dipping completes, by by inner air
Extract out and be filled with nitrogen or not with zinc, the gas of ferrum generation oxidation reaction, to reduce internal oxygen and moisture, greatly
Reduce the purpose of its internal oxidation speed.
It follows that technology is described in detail by some specific embodiments:
A kind of air hermetic preserved contact net tubular steel post, as shown in Figure 1-2, the end sealing at cylinder 2 is fixed and (is such as welded
Connect, be integrally machined) the first ring flange 1, the first ring flange 1 is tightly connected sealing lid, and the lid mouth sealing lid arranges the second flange
Dish 3, with bolts with the first ring flange 1.Seal lid can disassemble by the first ring flange 1, be used as to close after zinc-plated.Close
Arranging two valves in capping, two valves are arranged at the bottom of lid on 4, and one of them is used for connecting air inlet (or bleeding) pipe, another
Individual for connecting air gauge.After inflating or bleeding, need space in the pipe of closing tubular steel post, the most each valve is all provided with
Putting sealed valve 5, this valve is right-angle valve.Traditional cylinder 2 low side is not provided with any sealing structure, promotes in pipe all the time
Being exposed in air, be easily corroded in pipe, improved it in this utility model, the bottom end seal of cylinder 2 is fixed with
Galvanized sheet 6, galvanized sheet 6 arranges outage 7, and the aperture of outage 7 is less than the cross sectional inner diameter of tubular steel post.Outage 7 is joined
There is sealing plate, use sealing plate to seal by outage 7 after galvanizing by dipping.
In order to improve the sealing effectiveness between the first ring flange 1 and the second ring flange 3, tetrafluoro can be set between
Packing ring.When selecting tetrafluoro packing ring, the air-tightness of packing ring, compressibility, creep resistance, resist chemical, high resilience, anti-glutinous
Connecing property, non-corrosiveness, resistance to temperature are intended to reach certain requirement, with ensure strut seal flange under extraneous corrosive environment long-term
Airtight effect.
After galvanizing by dipping, control by sealing lid and sealing plate closure airtight to tubular steel post inside respectively, it is to avoid pillar
Internal corroded, it is achieved on coastal rainy, heavily contaminated district railway bridge, steel construction bracket pillar is in outside anticorrosion reinforcement process
After, the internal and external anti-corrosive time limit is at least up to 50 years；Avoid owing to pillar internal corrosion causes pillar to discard.
And, in order to avoid further, tubular steel post is internal to be aoxidized, and is also filled with non-oxygen activating QI in the inner tube of tubular steel post
Body, preferably nitrogen.Non-oxide noble gas contacts with tubular steel post and oxidation reaction does not occurs, and is that a kind of preferably anticorrosion is arranged
Execute.
In order to prepare above-mentioned air hermetic preserved contact net tubular steel post, as it is shown on figure 3, its method comprises the steps:
Step 101, seals the two ends treating zinc-plated tubular steel post；
This step is in order to next step air-tightness detected at weld seam and sealing is prepared.Because at tubular steel post finished product
Inert non-oxidizing gases can be filled with, to improve antiseptic effect, in order to avoid inert non-oxidizing gases overflows, so needing in inner tube
In advance air-tightness is detected, once poor air-tightness, need to repair in advance.
First pass through joint seal of flanges lid and the ring flange at cylinder top；It is then shut off sealing two valves covered；
Use the outage that sealing plate is closed bottom cylinder on galvanized sheet.
Step 102, by treating that the valve of zinc-plated tubular steel post end sealing lid is inflated to the inner tube treating zinc-plated tubular steel post,
Air-tightness at detection weld seam and sealing；
Detect bubble-tight mode and have a lot, use the principle that blows bubbles in the present embodiment, in the inner tube of tubular steel post
Inflatable body, if poor air-tightness, the gas run out of can blow out the bubble of suds.Particularly as follows:
Being inflated with air compressor machine, air pressure to 4.0 (in practical operation, do not fix, as long as can reach to froth by this atmospheric pressure value
The purpose of bubble, does not the most damage tubular steel post) time, suds are applied at weld seam and sealing, check weld seam and seal matter
Amount.If there being gas leak phenomenon, then carrying out resealing or repairing weld seam, if intact, carrying out removing capping and valve carries out hot-dip
Zinc.
One of them valve sealing lid is connected gas tube, and another valve connects air gauge；By valve to steel pipe
Inflation in pillar, and observe air pressure and reach preset value, close valve；Suds are smeared at the weld seam and sealing of tubular steel post；
If suds are blown bubble, then judge that the air-tightness at bubble is defective；If suds are not blown bubble, then judge steel pipe
The air-tightness of pillar is qualified.
Step 101 and step 102 belong to treats the zinc-plated front air tightness test of zinc-plated tubular steel post.
Step 103, if air-tightness is qualified, then dismantles the sealing of the sealing lid and bottom end treating zinc-plated tubular steel post top
Plate, then carries out galvanizing by dipping to cylinder；If air-tightness is defective, after resealing or repairing weld seam, repeat step 101
With 102；
Step 104, after galvanizing by dipping, is again sealed off the two ends of tubular steel post, and evacuation；
This step is in order to filling inert non-oxidizing gas in backward tubular steel post, and prevents its gas leakage from preparing.By air pressure
Table accesses a valve, and the exhaust tube of air exhauster contacts another valve, bleeds, while observing the change of atmospheric pressure value.
Step 105, is filled with nitrogen in the sealed steel pipe pillar of vacuum to the first atmospheric pressure value, and observes air pressure change；
This step be in order to detect zinc-plated after the air-tightness of tubular steel post.Particularly as follows: load nitrogen in tubular steel post
To 0.05 atmospheric pressure, enter and quiet stop state, after stopping at least through 24 hours quiet, reexamine air pressure inside.Air pressure without
During change (consideration temperature effects), confirm that products air tightness is qualified, otherwise utilize ultrasound wave again to check steel column structure weld seam, and
Repair.
Step 106,
Step 106, if air pressure is unchanged, is filled with nitrogen the most again to the second atmospheric pressure value in sealed steel pipe pillar；Close straight
Angle valve, pulls down air gauge and gas tube, to obtain final product.
After air pressure inside No leakage and change, proceed to be filled with the inert non-oxidizing gases such as nitrogen to 1 during room temperature
Standard pressure.Concrete inflation seasonal epidemic pathogens is at all according to temperature during inflation, according to its equation of The Ideal-Gas Equation, i.e. and pV=nRT, really
Determine inner gas pressure under relevant temperature.
This Project Product pillar uses tubular steel post, processing special to pillar, pillar is processed into enclosed construction, passes through post
Installing at the bottom of top and post and seal air valve, pillar inside and outside wall uses galvanizing by dipping preservative treatment, after galvanizing by dipping completes, by by inside
Air extract out and be filled with nitrogen or not with zinc, the gas of ferrum generation oxidation reaction, and carry out air tight test, in reducing
Portion's oxygen and moisture, greatly reduce the purpose of its internal oxidation speed, it is achieved carry out long-effective corrosion inside pillar.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for this
For the technical staff in field, this utility model can have various modifications and variations.All in spirit of the present utility model and principle
Within, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (6)
1. an air hermetic preserved contact net tubular steel post, it is characterised in that the end sealing of its cylinder is fixed with the first flange
Dish, described first ring flange detachable-type sealed connects seal cap, and described sealing covers and arranges two valves, and described valve sets
Put sealed valve；The bottom end seal of described cylinder is fixed with galvanized sheet, and described galvanized sheet arranges outage, and described outage is little
In the cross sectional inner diameter of described tubular steel post, described outage is furnished with sealing plate.
2. air hermetic preserved contact net tubular steel post as claimed in claim 1, it is characterised in that the lid mouth of described sealing lid sets
Put the second ring flange, at the bottom of lid on two described valves are set.
3. air hermetic preserved contact net tubular steel post as claimed in claim 2, it is characterised in that described first ring flange and institute
State and tetrafluoro packing ring is set between the second ring flange.
4. air hermetic preserved contact net tubular steel post as claimed in claim 1, it is characterised in that described valve is right-angle valve.
5. the air hermetic preserved contact net tubular steel post as described in any one of claim 1-4, it is characterised in that described steel pipe props up
It is filled with non-oxidized gas in the inner tube of post.
6. air hermetic preserved contact net tubular steel post as claimed in claim 5, it is characterised in that the inner tube of described tubular steel post
In be filled with nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620582129.2U CN205805100U (en) | 2016-06-15 | 2016-06-15 | Air hermetic preserved contact net tubular steel post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620582129.2U CN205805100U (en) | 2016-06-15 | 2016-06-15 | Air hermetic preserved contact net tubular steel post |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205805100U true CN205805100U (en) | 2016-12-14 |
Family
ID=58141591
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620582129.2U Active CN205805100U (en) | 2016-06-15 | 2016-06-15 | Air hermetic preserved contact net tubular steel post |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909034A (en) * | 2016-06-15 | 2016-08-31 | 中铁工程设计咨询集团有限公司 | Airtight type anticorrosion contact net steel pipe strut and preparing method thereof |
-
2016
- 2016-06-15 CN CN201620582129.2U patent/CN205805100U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909034A (en) * | 2016-06-15 | 2016-08-31 | 中铁工程设计咨询集团有限公司 | Airtight type anticorrosion contact net steel pipe strut and preparing method thereof |
| CN105909034B (en) * | 2016-06-15 | 2019-02-15 | 中铁工程设计咨询集团有限公司 | Air hermetic preserved contact net tubular steel post and preparation method thereof |
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| GR01 | Patent grant |