Protective oxygen bottle
By designing the inner and outer parts on the top of the oxygen cylinder, extending the connecting pipe and flanking it to form an arc structure, the problems of difficult processing of existing oxygen cylinders and easy loosening of the valve connection are solved, and efficient explosion-proof and leak-proof performance are achieved. stability.
Patent Information
- Application Number
- CN202421025015.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-12
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-12
AI Technical Summary
The protective structure of existing oxygen cylinders is difficult to process, high cost, and has the potential for air leakage easily caused by loosening of the valve connection.
By designing the inner extension and the outer extension on the top of the oxygen cylinder, the inner extension extends the connection length between the connecting pipe and the bottle body, the outer extension flanges to form an arc-shaped structure to fix the protective cover, change the impact conduction position, and reduce the valve connection The impact force is made of tapered thread and straight thread combined with sealing structure to increase sealing performance.
It reduces processing difficulty and cost, enhances explosion-proof and leak-proof performance, improves the stability and sealing performance of valve connections, reduces the risk of bottle cracks, and cleverly cancels the original valve connection design.
Smart Images
Figure CN222278211U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the mechanical field and relates to a protective oxygen cylinder. Background Art
[0002] Oxygen cylinders are high-pressure containers for storing and transporting oxygen, and are used in hospitals, emergency stations, and sanatoriums. The structure includes a bottle body, a valve, and a protective cover on the top. The structure of an oxygen cylinder is similar to that of an argon cylinder. On June 9, 2022, our company applied for a utility model patent for an argon cylinder based on a head-impact protection structure. Through the split protective cover structure design, when the outer wall of the enclosure is hit by an external force, it provides sufficient deformation margin, achieves a good buffering effect, and avoids the use of a solid structure that directly causes external forces to act on the connection part. It can be seen from the drawings in the specification that after the connection cover is subjected to force, the upper end directly acts on the connection part to directly realize the impact force transmission. The connection part is the valve connection part. After being impacted, it is easy to cause the valve connection pipe to loosen and leak. In essence, there are still hidden dangers (the specific scheme and analysis of this patent have been elaborated in detail in another patent application. In order to save review resources, the specific details will not be repeated. In response to the above problems, our company has made targeted improvements in the new patent application (in the explosion-proof oxygen cylinder). By changing the position of the impact force transmission, it plays a protective role on the valve connection part. This scheme requires the formation of a recessed part, but it can be seen from the drawings in the specification that the position of the recessed part is located at the non-outer edge and non-inner edge of the top of the bottle body. The difficulty of forming the recessed part in the middle area is greater than the difficulty of directly forming the recessed part at the inner mouth of the top of the bottle body. It is easy to cause cracks in the bottle body, and the processing efficiency is low and the cost is high.
[0003] In order to solve the above problems, this application is proposed. Utility Model Content
[0004] The purpose of the utility model is to provide a protective oxygen cylinder in view of the above-mentioned problems existing in the prior art. The protective oxygen cylinder strengthens the protection of the valve connecting pipe under the premise of reducing the difficulty of processing, has excellent explosion-proof and leak-proof performance, solves the problems of unreasonable protective structure of existing gas cylinders, and the difficulty and high cost of processing in the improved structure.
[0005] The purpose of the utility model can be achieved through the following technical solutions:
[0006] A protective oxygen cylinder comprises a bottle body, a valve and a protective cover, wherein the bottom of the valve is provided with a connecting pipe, and is characterized in that the top opening of the bottle body has an inner extension portion which is cylindrical and extends into the interior of the bottle body, and the top opening of the bottle body also has an outer extension portion which extends in the opposite direction, and the outer extension portion is turned out toward the outer wall of the top of the bottle body, and after being turned out, the overall structure is an arc-shaped structure, and after the outer extension portion is turned out, the bottom of the protective cover can be fixed thereon, and the connecting pipe is extended and extends into the inner extension portion and is threadedly sealed with the inner extension portion.
[0007] The other structures of the valve in this oxygen cylinder are the same as those of traditional oxygen cylinders. To reduce the review resources, the specific structure and principle will not be described in detail. The inner extension and the outer extension (before flanging) are formed by a stretching process. The specific details will not be described. The stretching process is a common method in this field. This operation is performed at the top of the bottle mouth, which is consistent with the position of the normal fire extinguisher bottle stretching process, except that there is an additional inner extension operation. Therefore, compared with the patent solution mentioned in the background technology, this operation has a greatly reduced processing difficulty, will not cause cracks in the bottle, and has high efficiency while reducing processing costs. After the outer extension is formed, it is extruded and turned out toward the outer wall of the top of the bottle body, so that the radial range of the outer extension becomes larger, so that the lower end of the protective cover can be fixed on the outer extension. The explosion-proof and leak-proof functions of this oxygen cylinder are mainly reflected in the following designs. First, the design of the inner extension prolongs the connection length between the connecting pipe and the bottle body, enhances the firmness and sealing performance, and changes from the traditional external connection (that is, the connecting pipe is connected to the convex connecting part outside the bottle body) to the connection inside the bottle body, so that the stability is further improved; second, the area where the connecting part is originally set on the bottle body is shaped The outer extension part is formed into an outward flange, and the outer extension part has multiple functions. First, the radial area added after the flange provides space for the installation of the protective cover (that is, the outer edge of the outer extension part after the flange is more protruding than the maximum outer edge of the valve, so that the protective cover can be installed and fixed). Secondly, the outer extension part does not contact the connecting pipe after the flange, and the protective cover will only act on the outer extension part when it is hit. The radial area of the outer extension part after the flange is large and the strength is high. The arc structure makes the impact of the outer extension part more transmitted to the outer wall of the top of the bottle body, and the force transmission to the connecting pipe is very weak, which has a protective effect on the connecting pipe. The design of the extended inner extension part and the flanged outer extension part reduces the difficulty of processing while increasing the explosion-proof and leak-proof performance. The design of the original valve connection part is boldly cancelled, and the structural design is ingenious.
[0008] In the above-mentioned protective oxygen cylinder, the threaded connection between the connecting pipe and the inner extension is a tapered thread.
[0009] The tapered thread has strong sealing performance, so a good seal can be achieved without a sealing ring.
[0010] In the above-mentioned protective oxygen cylinder, the threaded connection between the connecting tube and the inner extension is a straight thread, the upper end of the connecting tube has a radially extending retaining edge, and the root of the outer extension forms a limiting portion after being folded out. The connecting tube is provided with a sealing gasket located below the retaining edge, and the sealing gasket is squeezed and deformed by the retaining edge and the limiting portion to achieve sealing.
[0011] The advantage of straight thread is that it has strong axial tensile strength, but its sealing performance is slightly inferior to that of tapered thread. Therefore, the straight thread solution is combined with a sealing structure to achieve high tensile strength while ensuring the connection sealing performance. Specifically, after the connecting pipe is connected to the inner extension, the retaining edge and the limiting part are in full contact, causing the sealing gasket to deform and achieve sealing. The limiting part is formed by flanging the outer extension. The structural strength here is high, and it is the most suitable place for the limiting part to abut.
[0012] In the above-mentioned protective oxygen cylinder, the cross section of the sealing gasket is triangular.
[0013] That is, the sealing surface of the gasket is an inclined surface.
[0014] In the above-mentioned protective oxygen cylinder, the thread on the outer wall of the connecting pipe is a segmented structure, and an O-ring is sleeved between the two segments.
[0015] Multiple sealing structures are formed through the segmented structure to further enhance the sealing performance.
[0016] In the above-mentioned protective oxygen cylinder, an annular groove is provided on the outer edge of the extension portion, and the lower end of the protective cover is screwed into the annular groove.
[0017] A thread is provided in the annular groove to fix the protective cover.
[0018] In the above-mentioned protective oxygen cylinder, a gap is reserved between the outer wall of the top of the bottle body after the outer extension part is turned outward.
[0019] When the protective cover is hit, the outer extension under the protective cover acts as a force point. The reserved gap can provide space for the outer extension to continue to deform and can offset a lot of impact force during the deformation process.
[0020] In the above-mentioned protective oxygen cylinder, the wall thickness of the extension portion is not less than 2 mm.
[0021] Sufficient thickness can ensure the strength of the extension portion.
[0022] In the above-mentioned protective oxygen cylinder, the length of the outer extension portion is smaller than the length of the inner extension portion.
[0023] The main function of the inner extension part is to extend the connection distance with the connecting pipe, and the function of the outer extension part is to realize the radial extension range of the flange.
[0024] Compared with the prior art, this protective oxygen cylinder has the following advantages:
[0025] 1. The inner extension and outer extension of the protective oxygen cylinder are formed by a stretching process, which greatly reduces the difficulty of processing and will not cause cracks in the bottle body. It is efficient and reduces processing costs. The design of the original valve connection part is boldly cancelled, and the structural design is ingenious.
[0026] 2. This protective oxygen cylinder has greatly enhanced its explosion-proof and leak-proof performance through the internal extension and external flanging design.
[0027] 3. This protective oxygen cylinder achieves high tensile strength while ensuring connection sealing through a straight thread solution combined with a sealing structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a structural sectional view of the protective oxygen cylinder.
[0029] Figure 2 yes Figure 1 A magnified view of the structure in area A.
[0030] Figure 3 yes Figure 1 A magnified view of the structure in region B.
[0031] List of Reference Numerals
[0032] In the figure, 1. bottle body;
[0033] 1a, inner extension;
[0034] 1b, extension part;
[0035] 1b1, limiting part;
[0036] 1b2, ring groove;
[0037] 2. Valve;
[0038] 3. Protective cover;
[0039] 4. Connecting pipe;
[0040] 4a, retaining edge;
[0041] 5. Sealing gasket;
[0042] 6. O-ring;
[0043] 7. Leave some space. DETAILED DESCRIPTION
[0044] like Figures 1 to 3As shown, the protective oxygen cylinder includes a bottle body 1, a valve 2 and a protective cover 3. The bottom of the valve 2 has a connecting pipe 4. The top opening of the bottle body 1 has a cylindrical inner extension 1a extending into the inside of the bottle body 1. The top opening of the bottle body 1 also has an outer extension 1b extending in the opposite direction. The outer extension 1b is turned out toward the outer wall of the top of the bottle body 1, and the overall structure is an arc after turning out. After the outer extension 1b is turned out, the bottom of the protective cover 3 can be fixed on it. The connecting pipe 4 is extended and extends into the inner extension 1a and is screwed and sealed with the inner extension 1a. The other structures of the valve 2 in the oxygen cylinder are the same as those of the traditional oxygen cylinder. In order to reduce the review resources, the specific structure and principle are not described in detail. The inner extension 1a and the outer extension 1b (before flanging) are both formed by a stretching process, which will not be described in detail. The stretching process is a common method in this field. This operation is performed at the top of the bottle body 1, which is consistent with the position of the normal fire extinguisher bottle body 1 stretching process, except that the inner extension 1a operation is added. Therefore, compared with the patent solution mentioned in the background technology, this operation has a greatly reduced processing difficulty and will not cause cracks in the bottle body 1. It is efficient and reduces processing costs. After the outer extension 1b is formed, it is extruded and turned out toward the outer wall of the top of the bottle body 1, so that the radial range of the outer extension 1b becomes larger, so that the lower end of the protective cover 3 can be fixed on the outer extension 1b. The explosion-proof and leak-proof functions of this oxygen cylinder are mainly reflected in the following designs. First, the design of the inner extension 1a extends the connection length between the connecting pipe 4 and the bottle body 1, enhances the firmness and sealing performance, and changes from the traditional external connection (that is, the connecting pipe 4 is connected to the convex connecting part outside the bottle body 1) to the connection inside the bottle body 1, so that the stability is further improved; second, the area where the connecting part is originally set on the bottle body 1 is formed outward The flanged extension 1b has multiple functions. First, the radial area added after flanged provides space for the installation of the protective cover 3 (that is, the outer edge of the flanged extension 1b is more protruding than the maximum outer edge of the valve 2, so that the protective cover 3 can be installed and fixed). Secondly, the flanged extension 1b does not contact the connecting pipe 4. When the protective cover 3 is hit, it will only act on the extension 1b. The flanged extension 1b has a large radial area and high strength. The arc structure makes the impact of the extension 1b more transmitted to the outer wall of the top of the bottle body 1, and the force transmission to the connecting pipe 4 is very weak, which has a protective effect on the connecting pipe 4. The design of the extended inner extension 1a and the flanged extension 1b reduces the difficulty of processing while increasing the explosion-proof and leak-proof performance. The design of the original valve 2 connection part is boldly cancelled, and the structural design is ingenious.
[0045] The threaded connection between the connecting pipe 4 and the inner extension 1a is a tapered thread. The tapered thread has strong sealing performance, so a good seal can be achieved without a sealing ring. The threaded connection between the connecting pipe 4 and the inner extension 1a is a straight thread. The upper end of the connecting pipe 4 has a radially extending retaining edge 4a. After the outer extension 1b is turned out, its root forms a limiting portion 1b1. The connecting pipe 4 is sleeved with a sealing gasket 5 located below the retaining edge 4a. The sealing gasket 5 is squeezed and deformed by the retaining edge 4a and the limiting portion 1b1 to achieve sealing. The advantage of the straight thread is that it has strong axial tensile strength, but its sealing performance is slightly insufficient compared to the tapered thread. Therefore, the straight thread solution is matched with a sealing structure to achieve high tensile strength while ensuring the connection sealing performance. Specifically, after the connecting pipe 4 is connected to the inner extension 1a, the retaining edge 4a and the limiting portion 1b1 are in full contact, so that the sealing gasket 5 is deformed to achieve sealing. The limiting portion 1b1 is formed by flanging the outer extension 1b. The structural strength here is large, and it is most suitable as the abutment position of the limiting portion 1b1. The cross section of the sealing gasket 5 is triangular, that is, the sealing surface of the sealing gasket 5 is an inclined surface.
[0046] The thread of the outer wall of the connecting pipe 4 is a segmented structure, and an O-ring 6 is sleeved between the two sections. Multiple sealing structures are formed by the segmented structure to further enhance the sealing performance. An annular groove 1b2 is provided on the outer edge of the extension 1b, and the lower end of the protective cover 3 is screwed into the annular groove 1b2. A thread is provided in the annular groove 1b2 to fix the protective cover 3. After the extension 1b is turned outward, a gap 7 is reserved between the outer wall of the top of the bottle body 1. When the protective cover 3 is hit, the extension 1b under the protective cover 3 serves as a force point, and the reserved gap 7 can provide space for the extension 1b to continue to deform, and can offset a lot of impact force during the deformation process. The wall thickness of the extension 1b is not less than 2mm. Sufficient thickness can ensure the strength of the extension 1b. The length of the extension 1b is less than the length of the inner extension 1a. The main function of the inner extension 1a is to extend the connection distance with the connecting pipe 4, and the function of the extension 1b is to achieve the radial extension range of the flange.
[0047] The detailed structures, specific component sizes and principles not mentioned in the present application documents are all common knowledge or can be obtained by those skilled in the art through simple selection, and will not be elaborated on.
[0048] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
Claims
1. A protective oxygen cylinder, comprising a cylinder body, a valve and a protective cover, wherein the bottom of the valve has a connecting pipe, characterized in that: The top opening of the bottle body has an inner extension portion which is cylindrical and extends into the interior of the bottle body. The top opening of the bottle body also has an outer extension portion which extends in the opposite direction. The outer extension portion is turned out toward the outer wall of the top of the bottle body, and after being turned out, the overall structure is an arc-shaped structure. After the outer extension portion is turned out, the bottom of the protective cover can be fixed thereon. The connecting pipe is extended and extends into the inner extension portion and is threadedly sealed with the inner extension portion.
2. The protective oxygen cylinder according to claim 1, characterized in that The threaded connection between the connecting pipe and the inner extension is a tapered thread.
3. The protective oxygen cylinder according to claim 1, characterized in that: The threaded connection between the connecting tube and the inner extension is a straight thread. The upper end of the connecting tube has a radially extending retaining edge. After the outer extension is turned out, its root forms a limiting portion. The connecting tube is sleeved with a sealing gasket located below the retaining edge. The sealing gasket is squeezed and deformed by the retaining edge and the limiting portion to achieve sealing.
4. The protective oxygen cylinder according to claim 3, characterized in that: The cross section of the sealing gasket is triangular.
5. The protective oxygen cylinder according to claim 3, characterized in that: The thread of the outer wall of the connecting pipe is a segmented structure, and an O-type sealing ring is sleeved between the two segments.
6. The protective oxygen cylinder according to claim 1, characterized in that: An annular groove is provided on the outer edge of the extension portion, and the lower end of the protective cover is screwed into the annular groove.
7. The protective oxygen cylinder according to claim 1, characterized in that: A gap is reserved between the outer wall of the top of the bottle body after the outer extension part is turned outward.
8. The protective oxygen cylinder according to claim 1, characterized in that: The wall thickness of the extension portion is not less than 2 mm.
9. The protective oxygen cylinder according to claim 1, characterized in that: The length of the outer extension portion is smaller than the length of the inner extension portion.