CN109838681A - A kind of rubber membrane cabinet that flexible rubber film is low temperature resistant and its improve low temperature resistant method - Google Patents
A kind of rubber membrane cabinet that flexible rubber film is low temperature resistant and its improve low temperature resistant method Download PDFInfo
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- CN109838681A CN109838681A CN201910180444.0A CN201910180444A CN109838681A CN 109838681 A CN109838681 A CN 109838681A CN 201910180444 A CN201910180444 A CN 201910180444A CN 109838681 A CN109838681 A CN 109838681A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 166
- 239000012528 membrane Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000009413 insulation Methods 0.000 claims abstract description 27
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000012856 packing Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 64
- 239000010959 steel Substances 0.000 claims description 64
- 239000000463 material Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 18
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 4
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- 229920002367 Polyisobutene Polymers 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- -1 fluorubber Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 2
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 239000003034 coal gas Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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Abstract
The invention discloses a kind of rubber membrane cabinet that flexible rubber film is low temperature resistant and its improve low temperature resistant method, including gas holder cabinet body, piston, T baffle pallet and T baffle, T baffle pallet is fixedly mounted on the lower side of gas holder cabinet body, piston is mounted on the gas holder cabinet body of T baffle pallet side, and T baffle is mounted on the upper end of T baffle pallet；The upper end of the piston is equipped with piston rubber packing.The low temperature resistant rubber membrane cabinet of this flexible rubber film and its improve low temperature resistant method, can effectively improve the resistance to low temperature of flexible rubber film, improve the use temperature range of flexible rubber film；Pass through insulation and coat thermal insulation coating and can effectively obstruct low temperature and conduct flexible rubber film to gas holder, effectively improves the resistance to low temperature of flexible rubber film；By being transformed to flexible rubber film used in existing gas holder, more economically, feasibility is high, is suitble to industrial applications.
Description
Technical field
The present invention relates to the flexible rubber film and sealing device technical field of gas chamber, in particular to a kind of flexible rubber film
The low temperature resistant method of low temperature resistant rubber membrane cabinet and its improvement.
Background technique
Rubber membrane cabinet is also referred to as curtain type gas chamber, and early stage represents cabinet type as Wei Jinsi (Wiggins) type.This coal
Gas holder is a kind of without oil lubrication system and the dry type coal gas storage facilities of non-power consumption.It passes through flexible rubber film and work
Plug, T fence, cabinet body form a seal cavity that can be up and down and store coal gas.Flexible rubber film is by two kinds of different materials
Material respectively accompanies the cylinder type rubber product that nylon fabric mutually bonds formation.Its side contacted with coal gas uses nitrile rubber,
The side contacted with air uses neoprene.
Sealing device working principle is as follows: when piston and T fence rise, on flexible rubber film overturning volume, and gas holder gas storage,
Rubber membrane stretches under artesian condition at this time；When piston and T fence decline, gas holder outer confession venting one's pent-up feelings, rubber membrane is in pressure at this time
Contracting state.Therefore, sealing device should also have suitable anti-bending strength and tensile strength other than with superpower air-tightness.
China has a vast territory, and weather multiplicity, northern some areas winter temperature can be down to -40 DEG C hereinafter, this is to coal gas
A test of rubber product in cabinet.However, the resistance to low temperature of flexible rubber membrane material used can not reach in gas chamber at present
To requirement.After outside air temperature is down to certain value, low temperature is conducted by gas holder side plate, piston and T fence to rubber membrane, to make
Rubber material (nitrile rubber) reaches its brittleness temperature, is destroyed under external force, sealing performance just cannot be guaranteed；It is based on
This, proposes a kind of rubber membrane cabinet that flexible rubber film is low temperature resistant and its improves low temperature resistant method.
Summary of the invention
The purpose of the present invention is to provide a kind of rubber membrane cabinet that flexible rubber film is low temperature resistant and its improve low temperature resistant side
Method, the use temperature range with flexible rubber film is wide, the resistance to low temperature of improvement flexible rubber film, economic and practical advantage,
To solve to propose that resistance to low temperature is bad in above-mentioned background technique, is collided and destroyed to reach brittleness temperature, lead to leakproofness
Bad problem.
To achieve the above object, the invention provides the following technical scheme: a kind of rubber membrane cabinet that flexible rubber film is low temperature resistant,
Including gas holder cabinet body, piston, T baffle pallet and T baffle, T baffle pallet is fixedly mounted on the lower side of gas holder cabinet body, piston peace
On the gas holder cabinet body on the inside of T baffle pallet, T baffle is mounted on the upper end of T baffle pallet；The upper end of the piston is equipped with
Piston rubber packing；T baffle lower end is equipped with T baffle lower part angle steel and T baffle lower part channel steel, the upper end installation of gas holder cabinet body
There is side plate to seal angle steel, outer flexible rubber film, T baffle lower part angle steel are installed between T baffle lower part channel steel and side plate sealing angle steel
Interior flexible rubber film is installed between piston；Interior bonding zone is respectively equipped with inside and outside the both ends of the outer flexible rubber film
Domain and outer adhesion area, the interior adhesion area and outer adhesion area and T baffle lower part channel steel of outer flexible rubber film one end are fixed to be connected
It connects, the interior adhesion area and outer adhesion area of the outer flexible rubber film other end are fixedly connected with side plate sealing angle steel respectively；The T
The inside of baffle is equipped with interior flexible rubber film, and one end of interior flexible rubber film is fixedly connected with T baffle lower part angle steel, the other end and
The bottom end of piston is fixedly connected；Described outer flexible rubber film one end is fixedly connected with T baffle lower part channel steel, and the other end is close with side plate
Envelope angle steel is fixedly connected；The top of the T baffle is equipped with T baffle upper frame；The top of the gas holder cabinet body is provided with ventilation opening；Institute
After stating the upward end motion of piston, air cavity is formed between bottom end and gas holder cabinet body.
A kind of method that the improvement for the rubber membrane that flexible rubber film is low temperature resistant is low temperature resistant, includes the following steps:
S1: in the rubber material that the interior adhesion area of flexible rubber film and outer adhesion area bonding resistance to low temperature are excellent；
S2: region, the T baffle lower channel of outer flexible rubber film and interior flexible rubber film are correspondingly connected with to the bottom end of T baffle
Steel be correspondingly connected with the region of outer flexible rubber film, side plate sealing angle steel on the inside of be correspondingly connected with outer flexible rubber film region it is gentle
The corresponding region for contacting outer flexible rubber film of cabinet cabinet body side wall, piston are correspondingly connected with region and the T baffle of interior flexible rubber film
The region that angle steel is correspondingly connected with interior flexible rubber film carries out insulation, and coats thermal insulation coating；
S3: at the insulation of the interior adhesion area of outer flexible rubber film one end and outer adhesion area and T baffle lower part channel steel
Reason region is fixedly connected, on the inside of the interior adhesion area of the outer flexible rubber film other end and outer adhesion area and side plate sealing angle steel
Insulation region is fixedly connected；By the bottom end pair of the interior adhesion area of interior flexible rubber film one end and outer adhesion area and piston
The insulation region that interior flexible rubber film should be connected is fixedly connected, by the interior adhesion area of the interior flexible rubber film other end and outside
Adhesion area is fixedly connected with the insulation region of T baffle lower part angle steel, is completed to rubber membrane cabinet after the completion of above-mentioned connection
The improvement of inner flexible rubber membrane resistance to low temperature.
Preferably, thermal insulation coating selection polyurethane, fluororesin, one or several kinds of in nano aluminium oxide, coating thickness
Degree is 80-200um.
Preferably, the excellent rubber material of resistance to low temperature uses polyisobutene, ethylene propylene diene rubber, fluorubber, silicon rubber
One of glue and polyurethane rubber are several, adhesive rubber material with a thickness of 0.5-3mm.
Compared with prior art, the beneficial effects of the present invention are: the low temperature resistant rubber membrane cabinet of this flexible rubber film and its changing
It is apt to low temperature resistant method, has the advantages that
1: the excellent rubber material of resistance to low temperature being bonded in flexible rubber film surface, can effectively improve flexible rubber
The resistance to low temperature of glue film improves the use temperature range of flexible rubber film.
2: being sealed by the bottom end to T baffle, T baffle lower part channel steel, T baffle lower part angle steel, gas holder cabinet body side wall, side plate
The lower end surface of angle steel and piston carries out insulation, and coats thermal insulation coating, can effectively obstruct low temperature conduction
Flexible rubber film inside to gas holder, to effectively improve the resistance to low temperature of flexible rubber film.
3: by being transformed to flexible rubber film used in existing gas holder, compared to the method being modified to rubber material
More economically, feasibility is high, is suitble to industrial applications.
Detailed description of the invention
Fig. 1 is the sealing state schematic diagram of unaerated state of the invention；
Fig. 2 is the sealed structural schematic diagram of inflated condition of the invention；
Fig. 3 is the sealed structural schematic diagram under gas full state of the invention；
Fig. 4 is that outer flexible rubber film and side plate of the invention seal angle steel connection figure；
Fig. 5 is outer flexible rubber film and T baffle lower part angle steel connection figure of the invention.
In figure: 1, gas holder cabinet body；2, piston；3, T baffle pallet；4, T baffle；5, piston rubber packing；6, T baffle lower angle
Steel；7, side plate seals angle steel；8, outer flexible rubber film；81, interior adhesion area；82, outer adhesion area；9, interior flexible rubber film；
10, T baffle upper frame；11, ventilation opening；12, air cavity.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1-5, a kind of rubber membrane cabinet that flexible rubber film is low temperature resistant, including gas holder cabinet body 1, piston 2, T baffle
Pallet 3 and T baffle 4, T baffle pallet 3 are fixedly mounted on the lower side of gas holder cabinet body 1, and piston 2 is mounted on 3 inside of T baffle pallet
Gas holder cabinet body 1 on, T baffle 4 is mounted on the upper end of T baffle pallet 3；The upper end of piston 2 is equipped with piston rubber packing 5；T baffle
4 lower ends are equipped with T baffle lower part angle steel 6 and T baffle lower part channel steel 13, and the upper end of gas holder cabinet body 1 is equipped with side plate sealing angle steel
Outer flexible rubber film 8 is installed between 7, T baffle lower part channel steels 13 and side plate sealing angle steel 7, T baffle lower part angle steel 6 and piston 2 it
Between interior flexible rubber film 9 is installed；Interior adhesion area 81 and outer viscous is respectively equipped with inside and outside the both ends of outer flexible rubber film 8
Region 82 is closed, the interior adhesion area 81 and outer adhesion area 82 and T baffle lower part channel steel 13 of outer 8 one end of flexible rubber film are fixed to be connected
It connects, the interior adhesion area 81 and outer adhesion area 82 of outer 8 other end of flexible rubber film are fixed with side plate sealing angle steel 7 respectively to be connected
It connects；The inside of T baffle 4 is equipped with interior flexible rubber film 9, and one end of interior flexible rubber film 9 is fixedly connected with T baffle lower part angle steel 6,
The other end is fixedly connected with the bottom end of piston 2；Outer 8 one end of flexible rubber film is fixedly connected with T baffle lower part channel steel 13, the other end
It is fixedly connected with side plate sealing angle steel 7；The top of T baffle 4 is equipped with T baffle upper frame 10；The top of gas holder cabinet body 1 is provided with ventilation
Mouth 11；After the upward end motion of piston 2, air cavity 12 is formed between bottom end and gas holder cabinet body 1.
A kind of method that the improvement for the rubber membrane that flexible rubber film is low temperature resistant is low temperature resistant, includes the following steps:
Step 1: the rubber excellent in interior adhesion area 81 and outer adhesion area 82 the bonding resistance to low temperature of flexible rubber film
Glue material, the excellent rubber material of resistance to low temperature is using polyisobutene, ethylene propylene diene rubber, fluorubber, silicon rubber and gathers
One of urethane rubber is several, adhesive rubber material with a thickness of 0.5-3mm；
Step 2: being correspondingly connected with region, the T baffle of outer flexible rubber film 8 and interior flexible rubber film 9 to the bottom end of T baffle 4
Lower part channel steel 13 is correspondingly connected with the region of outer flexible rubber film 8, the inside of side plate sealing angle steel 7 is correspondingly connected with outer flexible rubber film
8 region and the corresponding region for contacting outer flexible rubber film 8 of 1 side wall of gas holder cabinet body, piston 2 are correspondingly connected with interior flexible rubber film 9
Region and T baffle lower part angle steel 6 be correspondingly connected with the region of interior flexible rubber film 9 and carry out insulation, and coat thermal insulation
Coating, thermal insulation coating selection polyurethane, fluororesin, one or several kinds of in nano aluminium oxide, thickness of coating layer 80-
200um；
Step 3: by the interior adhesion area 81 of outer 8 one end of flexible rubber film and outer adhesion area 82 and T baffle lower part channel steel
13 insulation region is fixedly connected, by the interior adhesion area 81 of outer 8 other end of flexible rubber film and outer adhesion area 82 with
Side plate sealing 7 inside insulation region of angle steel is fixedly connected；By the interior adhesion area 81 of interior 9 one end of flexible rubber film and outer viscous
It closes region 82 to be fixedly connected with the insulation region that the bottom end of piston 2 is correspondingly connected with interior flexible rubber film 9, by interior flexible rubber
The interior adhesion area 81 and outer adhesion area 82 of 9 other end of film are fixedly connected with the insulation region of T baffle lower part angle steel 6,
The improvement to rubber membrane cabinet inner flexible rubber membrane resistance to low temperature is completed after the completion of above-mentioned connection.
The low temperature resistant rubber membrane cabinet of the flexible rubber film and its improve low temperature resistant method, has the effect that
1: the excellent rubber material of resistance to low temperature being bonded in flexible rubber film surface, can effectively improve flexible rubber
The resistance to low temperature of glue film improves the use temperature range of flexible rubber film.
2: angle steel 7, gas are sealed by the bottom end to T baffle 4, T baffle lower part angle steel 6, T baffle lower part channel steel 13, side plate
The lower end surface of 1 side wall of cabinet cabinet body and piston 2 carries out insulation, and coats thermal insulation coating, can effectively obstruct low
Temperature conducts the flexible rubber film to gas holder, to effectively improve the resistance to low temperature of flexible rubber film.
3: by being transformed to flexible rubber film used in existing gas holder, compared to the method being modified to rubber material
More economically, feasibility is high, is suitble to industrial applications.
In conclusion the low temperature resistant rubber membrane cabinet of flexible rubber film proposed by the present invention and its improve low temperature resistant method,
The excellent rubber material of resistance to low temperature is bonded in flexible rubber film surface, can effectively improve the resistance to low of flexible rubber film
Warm nature energy improves the use temperature range of flexible rubber film；By under bottom end to T baffle 4, T baffle lower part angle steel 6, T baffle
The lower end surface that portion's channel steel 13, side plate seal angle steel 7,1 side wall of gas holder cabinet body and piston 2 carries out insulation, and coats heat
Coatings can effectively obstruct low temperature and conduct flexible rubber film to gas holder, to effectively improve flexible rubber
The resistance to low temperature of glue film；By being transformed to flexible rubber film used in existing gas holder, change compared to rubber material
Property method it is more economical, feasibility is high, is suitble to industrial applications.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of rubber membrane cabinet that flexible rubber film is low temperature resistant, which is characterized in that including gas holder cabinet body (1), piston (2), T baffle
Pallet (3) and T baffle (4), T baffle pallet (3) are fixedly mounted on the lower side of gas holder cabinet body (1), and piston (2) is mounted on T gear
On gas holder cabinet body (1) on the inside of grillage platform (3), T baffle (4) is mounted on the upper end of T baffle pallet (3)；The piston (2) it is upper
End is equipped with piston rubber packing (5)；T baffle (4) lower end is equipped with T baffle lower part angle steel (6) and T baffle lower part channel steel
(13), the upper end of gas holder cabinet body (1) is equipped with side plate sealing angle steel (7), and T baffle lower part channel steel (13) and side plate seal angle steel
(7) outer flexible rubber film (8) is installed between, interior flexible rubber film is installed between T baffle lower part angle steel (6) and piston (2)
(9)；Interior adhesion area (81) and outer adhesion area are respectively equipped with inside and outside the both ends of the outer flexible rubber film (8)
(82), the interior adhesion area (81) and outer adhesion area (82) Yu T baffle lower part channel steel (13) of outer flexible rubber film (8) one end are solid
Fixed connection, the interior adhesion area (81) and outer adhesion area (82) of outer flexible rubber film (8) other end respectively with side plate seal angle
Steel (7) is fixedly connected；The inside of the T baffle (4) is equipped with interior flexible rubber film (9), one end of interior flexible rubber film (9) and T
Baffle lower part angle steel (6) is fixedly connected, and the other end is fixedly connected with the bottom end of piston (2)；Described outer flexible rubber film (8) one end
It is fixedly connected with T baffle lower part channel steel (13), the other end is fixedly connected with side plate sealing angle steel (7)；The top of the T baffle (4)
End is equipped with T baffle upper frame (10)；The top of the gas holder cabinet body (1) is provided with ventilation opening (11)；The piston (2) is transported to upper end
After dynamic, air cavity (12) are formed between bottom end and gas holder cabinet body (1).
2. a kind of low temperature resistant method of the improvement of rubber membrane that flexible rubber film as described in claim 1 is low temperature resistant, feature
It is, includes the following steps:
S1: in the rubber material that interior adhesion area 81 and outer adhesion area 82 the bonding resistance to low temperature of flexible rubber film are excellent；
S2: the bottom end of T baffle (4) is correspondingly connected under the region of outer flexible rubber film (8) and interior flexible rubber film (9), T baffle
Portion's channel steel (13) is correspondingly connected with the region of outer flexible rubber film (8), side plate seals and is correspondingly connected with outer flexible rubber on the inside of angle steel (7)
In the region of glue film (8) and the corresponding region for contacting outer flexible rubber film (8) of gas holder cabinet body (1) side wall, piston (2) are correspondingly connected with
The region that the region of flexible rubber film (9) and T baffle lower part angle steel (6) are correspondingly connected with interior flexible rubber film (9) is insulated
Processing, and coat thermal insulation coating；
S3: by the interior adhesion area (81) of outer flexible rubber film (8) one end and outer adhesion area (82) and T baffle lower part channel steel
(13) insulation region is fixedly connected, by the interior adhesion area (81) and outer bonding zone of outer flexible rubber film (8) other end
Domain (82) is fixedly connected with insulation region on the inside of side plate sealing angle steel (7)；By the interior bonding of interior flexible rubber film (9) one end
The bottom end of region (81) and outer adhesion area (82) and piston (2) is correspondingly connected with the insulation region of interior flexible rubber film (9)
It is fixedly connected, by the interior adhesion area (81) of interior flexible rubber film (9) other end and outer adhesion area (82) and T baffle lower angle
The insulation region of steel (6) is fixedly connected, and is completed after the completion of above-mentioned connection resistance to low to rubber membrane cabinet inner flexible rubber membrane
The improvement of warm nature energy.
3. a kind of low temperature resistant method of the improvement of rubber membrane that flexible rubber film is low temperature resistant as claimed in claim 2, feature
It is: the thermal insulation coating selection polyurethane, fluororesin, one or several kinds of in nano aluminium oxide, thickness of coating layer 80-
200um。
4. a kind of low temperature resistant method of the improvement of rubber membrane that flexible rubber film is low temperature resistant as claimed in claim 2, feature
Be: the excellent rubber material of the resistance to low temperature using polyisobutene, ethylene propylene diene rubber, fluorubber, silicon rubber and
One of polyurethane rubber is several, adhesive rubber material with a thickness of 0.5-3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910180444.0A CN109838681A (en) | 2019-03-11 | 2019-03-11 | A kind of rubber membrane cabinet that flexible rubber film is low temperature resistant and its improve low temperature resistant method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910180444.0A CN109838681A (en) | 2019-03-11 | 2019-03-11 | A kind of rubber membrane cabinet that flexible rubber film is low temperature resistant and its improve low temperature resistant method |
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| CN109838681A true CN109838681A (en) | 2019-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410659A (en) * | 2019-07-31 | 2019-11-05 | 中冶赛迪工程技术股份有限公司 | An Antifreeze Membrane Sealed Gas Holder |
| CN116209852A (en) * | 2020-09-28 | 2023-06-02 | 杰富意钢铁株式会社 | Air storage tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410659A (en) * | 2019-07-31 | 2019-11-05 | 中冶赛迪工程技术股份有限公司 | An Antifreeze Membrane Sealed Gas Holder |
| CN110410659B (en) * | 2019-07-31 | 2024-05-14 | 中冶赛迪工程技术股份有限公司 | Anti-freezing membrane sealed gas tank |
| CN116209852A (en) * | 2020-09-28 | 2023-06-02 | 杰富意钢铁株式会社 | Air storage tank |
| JP7581253B2 (en) | 2020-09-28 | 2024-11-12 | Ｊｆｅスチール株式会社 | Gas holder |
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Application publication date: 20190604 |