CN205026370U - Composite plastic inner bag of gas cylinder for warehousing and transportation - Google Patents
Composite plastic inner bag of gas cylinder for warehousing and transportation Download PDFInfo
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- CN205026370U CN205026370U CN201520542842.XU CN201520542842U CN205026370U CN 205026370 U CN205026370 U CN 205026370U CN 201520542842 U CN201520542842 U CN 201520542842U CN 205026370 U CN205026370 U CN 205026370U
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- gas cylinder
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Abstract
The utility model provides a composite plastic inner bag of gas cylinder for warehousing and transportation, has solved the first leakproofness of the metal bottle difference of composite plastic inner bag and the technical problem that the inner bag fills the easy local overheat of dress, and the technical scheme of adoption is including tube -shape plastic bottle, compound head and winding layer in the structure of inner bag, sink the metal bottle head of shoulder including having in the structure of compound head, with the help of sinking the plastics head that location structure that the shoulder -mounted set up and metal bottle head be connected, plastics head and tube -shape plastic bottle are the integral type structure, fill the air vent along presetting to be equipped with in the intraoral metal bottle plug axial of bottle with bottle inside feeds through. The utility model discloses an effective the sealing of plastics inner bag fibre winding gas cylinder relies on sealed face in metal bottle plug middle part and end plug afterbody back taper face, realization double sealing.
Description
Technical field
The utility model relates to a kind of composite plastic inner bag of accumulating gas cylinder, belongs to pressure cylinder technical field, particularly one and has corrosion-resistant, high voltage bearing composite plastic inner bag.
Background technique
Along with the development of new energy technology, resource equipment storaging and transport technology supporting with it also also obtains tremendous development in recent years, demand both at home and abroad for the splendid attire energy medium particularly pressure cylinder of gas medium also significantly increases, but the gas cylinder that domestic market is applied to pressurized gas accumulating mostly is full-metallic and has the Filament-wound Machine enhancing gas cylinder of metal inner tube, volume to weight ratio is low, and there is inner wall corrosion problem in metal inner tube, plastic inner container is wound around bottle owing to combining the feature of high-performance fiber and special plastic, there is higher volume to weight ratio, the advantage such as corrosion-resistant, have broad application prospects in energy medium accumulating.
But due to the needs of strength and stiffness, plastic inner container is wound around bottle and metallic material must be adopted to design bottleneck, and adopt suitable Shooting Technique to need appropriate design metal component structure, solve engagement problems between metallic material and plastic inner container, simultaneously because the plastic inner container capacity of heat transmission is poor, the problems such as easy generation electrostatic, when also should avoid gas filling gas cylinder, plastic inner container contacts with the direct of high velocity air as far as possible.
In domestic patent achievement, partial monopoly solves the engagement problems of bottleneck metalwork and plastic inner container well, but the sealing problem of bottleneck metalwork is not still well solved, and but still exist and fill air-flow and directly may contact in ingress with plastic inner container, local superheating and produce the problem of a large amount of electrostatic when causing plastic inner container to fill.
Summary of the invention
The utility model provides a kind of composite plastic inner bag of accumulating gas cylinder, the metal bottle head sealing difference and the inner bag that solve composite plastic inner bag fill the technical problem of easy local superheating, by the technical problem adopting embedded with conical metal bottle stopper to solve metal bottle head sealing difference, by the metal bottle stopper extending to bottle inside avoid fill gas time high pressure air and the technical problem of local superheating that causes of inner bag friction.
The utility model is the technological scheme realizing goal of the invention employing:
A kind of composite plastic inner bag of accumulating gas cylinder, the structure of described inner bag comprises tubular plastic bottle, compound end socket and winding layer, key is: the structure of described compound end socket comprises the metal bottle head with heavy shoulder, by the plastic end enclosure that the position structure that heavy shoulder is arranged is connected with metal bottle head, plastic end enclosure and tubular plastic bottle are integral structure, are axially arranged with the air filling and exhausting hole be communicated with bottle inside along the metal bottle stopper be preset in bottleneck.
The utility model achieves the effective sealing of plastic inner container fiber-wound gas cylinder, rely on sealing surface and end plug afterbody inverted cone surface in the middle part of metal bottle stopper, realize double seal, end plug is installed inside gas cylinder, except sidewall sealing surface, in continuous screwing operations, the extruding of afterbody inverted cone surface, make to fit tightly between plastic inner container and metalwork, in Long-Time Service process, can not because of Material shrinkage, there is the problem that plastics and metalwork mating face are opened in end socket deformation, in addition, mounting type from inside to outside, also make this structure when pressurized, end plug can with pressure increase, and become more and more tighter, thus it is reliable to realize gas cylinder, effective sealing, on the other hand, end plug runs through bottleneck, covers the plastic materials at bottleneck position completely, makes it and imports and exports air-flow and separate, and avoids high velocity air directly and the washing away of plastic materials, and avoids plastic inner container local superheating and produces the problem of a large amount of electrostatic.
Below in conjunction with accompanying drawing, the utility model is described in detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of metal bottle stopper.
Fig. 2 is the structural representation of metal bottle head.
Fig. 3 is structural representation of the present utility model (winding layer does not indicate).
In accompanying drawing, 1 is plastic bottle body, and 2 is metal bottle heads, 2-1 is heavy shoulder, and 2-2 is sealing internal thread, and 2-3 is metallic sealing section, 2-4 is positioning groove, and 2-5 is positioning hole, and 3 is metal bottle stoppers, 3-1 is sealing wedge surface, and 3-2 is air filling and exhausting hole, and 3-3 is pollutant exhaust hole, 3-4 is sealing outside thread, and 3-5 is O-ring seal, and 3-6 is positioning table, 4 is plastic end enclosures, and 5 is fastening accessories.
Embodiment
A kind of composite plastic inner bag of accumulating gas cylinder, the structure of described inner bag comprises tubular plastic bottle 1, compound end socket and winding layer, key is: the structure of described compound end socket comprises the metal bottle 2 with heavy shoulder 2-1, by the position structure that heavy shoulder 2-1 is arranged and metal bottle 2 plastic end enclosure be connected 4, plastic end enclosure 4 and tubular plastic bottle 1, in integral structure, are axially arranged with the air filling and exhausting hole 3-2 be communicated with bottle inside along the metal bottle stopper 3 be preset in bottleneck.Wherein winding layer adopts carbon fiber.
The inwall of the outer wall of described metal bottle stopper 3 and metal bottle 2 has interference fit and realizes expansion-fastening type and be tightly connected.
Rear along a metal bottle 2 axial inwall is provided with positioning groove 2-4, and the plastic material of plastic end enclosure 4 is wrapped in positioning groove 2-4 and forms smooth plastic seal face outward, and plastic seal face and the inwall of plastic end enclosure 4 are that integrated seamless is connected.
A described metal bottle 2 axial inwall epimere are provided with sealing internal thread 2-2, stage casing is designed with metallic sealing section 2-3.
The heavy shoulder 2-1 of described metal bottle 2 is provided with positioning hole 2-5, and the plastic material parcel of plastic end enclosure 4 is heavy take on and fills positioning hole, and plastic end enclosure 4 and metal bottle 2 is located by connecting.
The rear of described metal bottle stopper 3 is provided with the cone seal wedge surface 3-1 be sealed and matched in expansion-fastening type with the plastic seal face of a metal bottle 2 inwall rear.
The outer wall leading portion of described metal bottle stopper 3 is provided with sealing outside thread 3-4, stage casing is provided with O-ring seal 3-5; The conical surface length of described cone seal wedge surface 3-1 is 50 ~ 100mm.
Metal bottle stopper 3 is axially also provided with pollutant exhaust hole 3-3 along it.
Also comprise fastening accessory 5 in the structure of described compound end socket, the positioning table 3-6 that fastening accessory 5 is arranged with metal bottle stopper 3 front end is fixedly connected with; Described positioning table 3-6 is provided with outside thread, and fastening accessory 5 is tightening nuts, and with positioning table 3-6 by being threaded.
Described plastic end enclosure 4 adopts sweat soldering with the connection of tubular plastic bottle 1.
With the preparation method that composite plastic inner bag is supporting, the step of described method comprises gets the raw materials ready, prepares respectively with the metal bottle 2 of heavy shoulder 2-1, metal bottle stopper 3 and fastening accessory 5, it is characterized in that: also comprise in the step of described method:
A, prepare tubular plastic bottle 1,
B, metal bottle 2 to be inserted in rotational moulding or injection moulding die cavity, and in die cavity, is filled with melting HDPE raw material, after cooling and metal bottle 2 one-body molded be compound end socket,
C, sweat soldering compound end socket and tubular plastic bottle 1, and metal bottle stopper 3 is preset in cylindrical shell,
D, winding layer is set outside shaping inner bag.
The concrete steps of described steps A comprise:
A1, feed material plastics pipe inserted pultrusion in extruding equipment and become wall thickness to be the homogeneous pipe of 11.5 ~ 12.5mm, wherein processing tube material temperature degree is 200 ~ 300 DEG C,
The homogeneous pipe of A2, intercepting Len req is as tubular plastic bottle 1;
In described step B, it is 200 ~ 300 DEG C that injection parameters comprises granule heating temperature, and injection pressure is 100 ~ 200Mpa;
In described step C, hot melting temperature needed for sweat soldering is 200 ~ 300 DEG C, and hot melt pressure is 2 ~ 6Mpa.
In the utility model, compound end enclosure structure is designed at least comprise three parts: metal bottle stopper 3, metal bottle 2 and with metal bottle 2 plastic end enclosure of combining closely 4, major character is designed with screw connection structure inside metal bottle 2, the forming surface of metallic sealing section and plastic materials, metal bottle stopper 3 runs through whole bottleneck from inside to outside, the internal thread of the male thread portion of metal bottle stopper 3 leading portion and metal bottle 2 is connected, the metallic sealing section of the corresponding metal bottle of the sealing plane in stage casing 2 and be designed with O-ring seal, back segment is designed to the sealing wedge surface of plastic end enclosure 4 be interference fit and attaches inverted cone-shaped structure, by revolving metal bottle stopper 3, the interior profile of the inverted cone surface extruding plastic inner bag of metal bottle stopper 3 can be made, reach the object of sealing.In the present invention, position, metal bottle piston part is as the primary sealing member being wound around inner container bottle, and metal bottle arranges air inlet/outlet beyond the Great Wall, and tail end is horn mouth shape, extends in bottle.
A specific embodiment of the present utility model, because pressure is higher, the bottleneck connection part of end socket adopts metallic material, plastic end enclosure part and metal bottle head are molded as one, for main structural components, this compound takeshapes of closure and installation process are: first make metal bottle 3 and tubular plastic bottle 1, plastic end enclosure 4 is molded in metal bottle 3 by injection moulding or rotational molding technique afterwards, subsequently metal bottle stopper is passed bottleneck inside end socket, be threaded connection and be fastened on metal bottle head, finally by tightening nut, outside from bottle head, be fastened on screw thread that end plug stretches out, then compound end socket and tubular plastic bottle 1 are carried out sweat soldering.
Particularly, the making of plastic inner container is divided into: welding fabrication three key steps of the pultrusion of cylinder section plastic tube, the molding and forming of head members, inner bag.
First, the pultrusion of cylinder section plastic tube: the pultrusion of plastic tube carries out on special extruding equipment, during pultrusion, materials in the tube temperature 200 ~ 300 DEG C.Then, end socket molding and forming: end socket molding and forming flow process comprises: end socket metal joint, before injection moulding, metal joint is preset in die cavity, subsequently melting HDPE raw material is injected in die cavity, cooling aftershaping is compound end socket, installs metal bottle stopper and tightening nut, and the processing of end socket metalwork comprises the processing of metal joint, end plug, tightening nut, wherein injection parameters comprises granule heating temperature 200 ~ 300 DEG C, injection pressure 100 ~ 200Mpa.Finally, inner bag welding fabrication: the cylinder section part of pipe fitting as composite cylinder liner intercepting suitable length, adopts the mode of sweat soldering, by tubular plastic bottle 1 and compound end socket welding fabrication, wherein welding parameter comprises hot melting temperature: 200 ~ 300 DEG C, hot melt pressure: 2 ~ 6Mpa.
In the utility model, the key point of composite cylinder liner is: the end plug in end socket metalwork both played seal action, also plastic end enclosure position is compressed simultaneously, in the production phase, after end socket molding and forming, namely end plug is in place, complete after end socket welds with cylinder section, end socket end plug inadvisable go out, the fixing of end plug is realized by tightening nut.
Claims (10)
1. the composite plastic inner bag of an accumulating gas cylinder, the structure of described inner bag comprises tubular plastic bottle (1), compound end socket and winding layer, it is characterized in that: the structure of described compound end socket comprises the metal bottle head (2) with heavy shoulder (2-1), by the plastic end enclosure (4) that the upper position structure arranged of heavy shoulder (2-1) is connected with metal bottle head (2), plastic end enclosure (4) and tubular plastic bottle (1), in integral structure, are axially arranged with the air filling and exhausting hole (3-2) be communicated with bottle inside along the metal bottle stopper (3) be preset in bottleneck.
2. the composite plastic inner bag of a kind of accumulating gas cylinder according to claim 1, is characterized in that: the outer wall of described metal bottle stopper (3) and the inwall of metal bottle head (2) have interference fit and realize expansion-fastening type and be tightly connected.
3. the composite plastic inner bag of a kind of accumulating gas cylinder according to claim 2, it is characterized in that: the rear along metal bottle head (2) axial inwall is provided with positioning groove (2-4), the plastic material of plastic end enclosure (4) is wrapped in positioning groove (2-4) and forms smooth plastic seal face outward, and plastic seal face is that integrated seamless is connected with the inwall of plastic end enclosure (4).
4. the composite plastic inner bag of a kind of accumulating gas cylinder according to claim 3, is characterized in that: the axial inwall epimere of described metal bottle head (2) is provided with sealing internal thread (2-2), stage casing is designed with metallic sealing section (2-3).
5. the composite plastic inner bag of a kind of accumulating gas cylinder according to claim 1,2 or 3, it is characterized in that: the heavy shoulder (2-1) of described metal bottle head (2) is provided with positioning hole (2-5), the plastic material parcel of plastic end enclosure (4) is heavy to be takeed on and fills positioning hole, and plastic end enclosure (4) and metal bottle head (2) are located by connecting.
6. the composite plastic inner bag of a kind of accumulating gas cylinder according to claim 2, is characterized in that: the rear of described metal bottle stopper (3) is provided with the cone seal wedge surface (3-1) be sealed and matched in expansion-fastening type with the plastic seal face of metal bottle head (2) inwall rear.
7. the composite plastic inner bag of a kind of accumulating gas cylinder according to claim 6, is characterized in that: the outer wall leading portion of described metal bottle stopper (3) is provided with sealing outside thread (3-4), stage casing is provided with O-ring seal (3-5); The conical surface length of described cone seal wedge surface (3-1) is 50 ~ 100mm.
8. the composite plastic inner bag of a kind of accumulating gas cylinder according to claim 1,2 or 3, is characterized in that: metal bottle stopper (3) is axially also provided with pollutant exhaust hole (3-3) along it.
9. the composite plastic inner bag of a kind of accumulating gas cylinder according to claim 1,2 or 3, it is characterized in that: also comprise fastening accessory (5) in the structure of described compound end socket, the positioning table (3-6) that fastening accessory (5) and metal bottle stopper (3) front end are arranged is fixedly connected with; Described positioning table (3-6) is provided with outside thread, and fastening accessory (5) is tightening nut, and with positioning table (3-6) by being threaded.
10. the composite plastic inner bag of a kind of accumulating gas cylinder according to claim 1, is characterized in that: described plastic end enclosure (4) adopts sweat soldering with the connection of tubular plastic bottle (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520542842.XU CN205026370U (en) | 2015-07-24 | 2015-07-24 | Composite plastic inner bag of gas cylinder for warehousing and transportation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520542842.XU CN205026370U (en) | 2015-07-24 | 2015-07-24 | Composite plastic inner bag of gas cylinder for warehousing and transportation |
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| Publication Number | Publication Date |
|---|---|
| CN205026370U true CN205026370U (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520542842.XU Active CN205026370U (en) | 2015-07-24 | 2015-07-24 | Composite plastic inner bag of gas cylinder for warehousing and transportation |
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| CN (1) | CN205026370U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963886A (en) * | 2020-08-28 | 2020-11-20 | 亚普汽车部件股份有限公司 | Sealing structure of high-pressure composite container |
| WO2021057717A1 (en) * | 2019-09-26 | 2021-04-01 | 未势能源科技有限公司 | Pressure vessel and vehicle |
| US11964552B2 (en) | 2019-09-26 | 2024-04-23 | Ftxt Energy Technology Co., Ltd. | Pressure vessel and vehicle |
-
2015
- 2015-07-24 CN CN201520542842.XU patent/CN205026370U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021057717A1 (en) * | 2019-09-26 | 2021-04-01 | 未势能源科技有限公司 | Pressure vessel and vehicle |
| US11964552B2 (en) | 2019-09-26 | 2024-04-23 | Ftxt Energy Technology Co., Ltd. | Pressure vessel and vehicle |
| CN111963886A (en) * | 2020-08-28 | 2020-11-20 | 亚普汽车部件股份有限公司 | Sealing structure of high-pressure composite container |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |