阅读说明：本技术 一种液化气钢瓶及生产方法 (Liquefied gas steel cylinder and production method thereof ) 是由 南秀娟 吴卫 杜清 王水祥 于 2021-01-07 设计创作，主要内容包括：本发明公开了一种液化气钢瓶及生产方法,包括瓶体,瓶体外壁向瓶体内凹陷形成凹印,瓶体内壁对应于凹印的部分向瓶体内凸出形成凸印。瓶体外壁内凹,同时瓶体内壁内凸,使得瓶体在凹印和凸印之间的部分厚度与瓶体其他部分的厚度尽可能相近,以使得瓶体能够通过出厂前的力学测试。若要对瓶体进行翻新,就要在瓶体外按压凹印,由于按压过程中在瓶体内壁凸印的位置缺乏相应的支撑,就会导致瓶体外壁在凹印附近的部分一起发生凹陷,后续能够轻易被用户看出该瓶体为翻新瓶,用户拒绝接收使用,从而提升用户的用气安全。(The invention discloses a liquefied gas steel cylinder and a production method thereof, and the liquefied gas steel cylinder comprises a cylinder body, wherein the outer wall of the cylinder body is sunken into the cylinder body to form a concave print, and the part of the inner wall of the cylinder body, which corresponds to the concave print, is protruded inwards the cylinder body to form a convex print. The bottle outer wall indent for the partial thickness of bottle between gravure and protruding seal is close as far as possible with the thickness of other parts of bottle in the bottle inner wall is protruding in simultaneously, so that the bottle can pass through the mechanical test before dispatching from the factory. If the bottle body is to be renovated, the gravure is pressed outside the bottle body, and the concave part of the outer wall of the bottle body near the gravure is formed due to the lack of corresponding support at the convex printing position of the inner wall of the bottle body in the pressing process, so that the bottle body can be seen by a user to be renovated, and the user refuses to receive and use the bottle, thereby improving the gas use safety of the user.)

1. The liquefied gas steel cylinder is characterized by comprising a cylinder body, wherein the outer wall of the cylinder body is sunken into the cylinder body to form a concave print, and the part of the inner wall of the cylinder body, corresponding to the concave print, is protruded inwards the cylinder body to form a convex print.

2. The cylinder of claim 1, wherein the wall thickness of the body is not less than 2.5 mm.

3. The liquefied gas steel cylinder as claimed in claim 1, wherein the cylinder body comprises a cylinder body and an upper head welded to the top of the cylinder body, and the intaglio printing is located on the upper head.

4. The cylinder of claim 3, wherein the body further comprises a lower closure welded to the bottom of the cylinder, a base mounted to the bottom of the lower closure, a retainer mounted to the top of the upper closure, a valve seat disposed intermediate the retainer, and a cylinder valve mounted to the valve seat.

5. The cylinder of claim 1, wherein the body comprises an upper head and a lower head welded to the bottom of the upper head, and the indentation is formed in the upper head.

6. The cylinder of claim 5, wherein the body further comprises a base welded to the bottom of the lower closure, a retainer mounted to the top of the upper closure, a valve seat disposed intermediate the retainer, and a cylinder valve mounted to the valve seat.

7. The production method of the liquefied gas steel cylinder is characterized by comprising the following steps: the steel plate is extruded by using the die so that the gravure is formed in the middle of the front surface of the steel plate and the raised stamp is formed in the middle of the back surface of the steel plate, and then the steel plate is stamped, so that the outer wall of the bottle body is formed on the front surface of the steel plate.

8. The production method of the liquefied gas steel cylinder is characterized by comprising the following steps: and stamping the steel plate to form a gravure in the middle of the front surface of the steel plate and a raised stamp in the middle of the back surface of the steel plate, wherein the front surface of the steel plate forms the outer wall of the bottle body.

[ technical field ] A method for producing a semiconductor device

The invention relates to a liquefied gas steel cylinder and a production method thereof, belonging to the field of liquefied gas steel cylinders.

[ background of the invention ]

The liquefied petroleum gas steel cylinder in the current market is printed with the code of a manufacturer and the characters of the year of delivery, the characters are made by stamping, the characters protrude out of the outer surface of the steel cylinder, and the stamping mode is usually expressed as a raised printing mode.

The design service life of the liquefied petroleum gas steel cylinder is regulated to be 8 years according to the national standard GB 5842-2006. The steel cylinder with the service life exceeding the designed service life is discarded. Some lawbreakers recover the scrapped steel cylinders by illegal means, grind the printed characters of the steel cylinders which show the year of leaving factory flat, forge new year characters again by substances such as iron powder, etc., and turn the new cylinders into the turnover cylinders after painting treatment, the appearance of the turnover cylinders is the same as that of the new steel cylinders, and the ordinary liquefied petroleum gas users can not distinguish the new cylinders at all.

When the steel cylinder is manufactured, the wall thickness of the character part is consistent with that of other parts of the steel cylinder, and the character part is larger than the designed wall thickness, and passes various tests and detections before the steel cylinder leaves a factory. But the wall thickness of the polished part of the renovated cylinder is reduced, the thickness is insufficient, and under the action of high pressure in the gas cylinder, a great explosion risk exists, which brings great potential safety hazard for the safety of life and property of people.

[ summary of the invention ]

The present invention is directed to overcome the deficiencies of the prior art and to provide a new cylinder for liquefied gas and a method for manufacturing the same.

The technical scheme adopted by the invention is as follows:

the utility model provides a liquefied gas steel bottle, includes the bottle, and the bottle outer wall is sunken to the bottle internal gravure that forms, and the bottle inner wall is protruding in the bottle to form protruding seal corresponding to the part of gravure.

The invention has the beneficial effects that:

the bottle outer wall indent for the partial thickness of bottle between gravure and protruding seal is close as far as possible with the thickness of other parts of bottle in the bottle inner wall is protruding in simultaneously, so that the bottle can pass through the mechanical test before dispatching from the factory. If the bottle body is to be renovated, the gravure is pressed outside the bottle body, and the concave part of the outer wall of the bottle body near the gravure is formed due to the lack of corresponding support at the convex printing position of the inner wall of the bottle body in the pressing process, so that the bottle body can be seen by a user to be renovated, and the user refuses to receive and use the bottle, thereby improving the gas use safety of the user.

The wall thickness of the bottle body is not less than 2.5 mm.

The bottle body comprises a cylinder body and an upper end enclosure welded at the top of the cylinder body, and gravure is positioned on the upper end enclosure.

The bottle body also comprises a lower seal head welded at the bottom of the cylinder body, a base arranged at the bottom of the lower seal head, a guard ring arranged at the top of the upper seal head, a valve seat arranged in the middle of the guard ring and a bottle valve arranged on the valve seat.

The bottle body comprises an upper end enclosure and a lower end enclosure welded at the bottom of the upper end enclosure, and gravure is positioned on the upper end enclosure.

The bottle body also comprises a base welded at the bottom of the lower end enclosure, a guard ring arranged at the top of the upper end enclosure, a valve seat arranged in the middle of the guard ring and a bottle valve arranged on the valve seat.

A method for producing a liquefied gas steel cylinder comprises the following steps: the steel plate is extruded by using the die so that the gravure is formed in the middle of the front surface of the steel plate and the raised stamp is formed in the middle of the back surface of the steel plate, and then the steel plate is stamped, so that the outer wall of the bottle body is formed on the front surface of the steel plate.

A method for producing a liquefied gas steel cylinder comprises the following steps: and stamping the steel plate to form a gravure in the middle of the front surface of the steel plate and a raised stamp in the middle of the back surface of the steel plate, wherein the front surface of the steel plate forms the outer wall of the bottle body.

Other features and advantages of the present invention will be disclosed in more detail in the following detailed description of the invention and the accompanying drawings.

[ description of the drawings ]

The invention is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic front view of a small-sized liquefied gas cylinder according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a large-sized liquefied gas cylinder according to an embodiment of the present invention;

FIG. 3 is a schematic partial cross-sectional view of a top head of a prior art LPG cylinder prior to refurbishment;

FIG. 4 is a schematic partial cross-sectional view of a top head of a prior art retrofitted liquefied gas cylinder;

FIG. 5 is a schematic, partially cross-sectional view of the head of a liquefied gas cylinder prior to retrofitting in accordance with an embodiment of the present invention;

fig. 6 is a schematic partial cross-sectional view of the upper head of the refurbished liquid gas cylinder according to the embodiment of the present invention.

[ detailed description ] embodiments

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

In the following description, the appearances of the indicating orientation or positional relationship such as the terms "inner", "outer", "upper", "lower", "left", "right", etc. are only for convenience in describing the embodiments and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

Example (b):

referring to fig. 1-2, the present embodiment provides a cylinder for liquefied gas, which includes a cylinder body. The liquefied gas cylinders may be classified into small-sized liquefied gas cylinders and large-sized liquefied gas cylinders according to the size of the cylinder body.

The small-sized liquefied gas steel cylinder body comprises an upper seal head 1, a lower seal head 2, a base 3, a retainer 4, a valve seat 5 and a cylinder valve 6. The lower seal head 2 is welded at the bottom of the upper seal head 1, the base 3 is welded at the bottom of the lower seal head 2, the guard ring 4 and the valve seat 5 are both installed at the top of the upper seal head 1, the valve seat 5 is located in the middle of the guard ring 4, and the cylinder valve 6 is installed on the valve seat 5.

The large-scale liquefied gas cylinder body includes barrel 7, upper cover 1, lower cover 2, base 3, protective shroud 4, disk seat 5 and cylinder valve 6. The upper seal head 1 is welded at the top of the cylinder body 7, the lower seal head 2 is welded at the bottom of the cylinder body 7, the base 3 is welded at the bottom of the lower seal head 2, the guard ring 4 and the valve seat 5 are both installed at the top of the upper seal head 1, the valve seat 5 is located in the middle of the guard ring 4, and the cylinder valve 6 is installed on the valve seat 5.

No matter a small-sized liquefied gas steel cylinder or a large-sized liquefied gas steel cylinder, a steel seal needs to be arranged on a cylinder body, and the steel seal needs to show the code of a manufacturer of the liquefied gas steel cylinder and the year of delivery. In order to unify the positions of the steel seals on the bottle body, the steel seals are arranged on the arc part at the top of the upper end enclosure 1, and identification is facilitated.

Referring to fig. 3, in the prior art, the circular arc-shaped outer wall of the upper seal head 1 protrudes out of the upper seal head 1 to form a convex seal 12, the part of the circular arc-shaped inner wall of the upper seal head 1 corresponding to the convex seal 12 is recessed out of the upper seal head 1 to form a concave print 11, and the part of the upper seal head 1 between the concave print 11 and the convex seal 12 is a steel print. The embossed seal 12 and the gravure seal 11 are opposite to each other in the radial direction of the upper seal head 1, so that the thicknesses of the steel seal and other parts of the upper seal head 1 are not obviously different, and the upper seal head 1 can meet the test requirements.

Referring to fig. 4, when the upper end enclosure 1 needs to be refurbished, the outer wall of the steel seal needs to be polished to eliminate the information displayed by the original steel seal, and then the refurbished is completed by forging new information by using substances such as iron powder 13 and spraying paint, and the information displayed by the iron powder 13 is the delayed delivery time of the bottle, so that the service time of the bottle considered by a user is shorter than the actual service time of the bottle. The user of the ordinary liquefied gas of the upper end socket 1 after renovation can not identify the upper end socket at all. The steel seal is thinned after being polished, and the mechanical properties of substances such as iron powder 13 and the like are poor, so that the refurbished liquefied gas cylinder has huge potential safety hazards.

It is worth noting that all liquefied gas cylinders on the market today adopt the above scheme.

Referring to fig. 5, in order to solve the above problem, in this embodiment, the circular arc outer wall of the upper end enclosure 1 is recessed into the upper end enclosure 1 to form a concave print 11, a portion of the circular arc inner wall of the upper end enclosure 1 corresponding to the concave print 11 protrudes into the upper end enclosure 1 to form a convex print 12, and a portion of the upper end enclosure 1 between the concave print 11 and the convex print 12 is a steel print. Similarly, the gravure 11 and the embossing 12 are opposite to each other in the radial direction of the upper end enclosure 1, and the thickness of the steel seal is similar to that of other parts of the upper end enclosure 1 and is not less than 2.5mm, so that the bottle body can meet the requirements of ex-factory mechanical tests. The gravure 11 portion of the steel seal may display the medium code and the title code in addition to the factory time.

Referring to fig. 6, if the upper head 1 of the present embodiment is to be renewed, the gravure 11 and the outer wall of the upper head 1 are only pressed by striking on the outer side of the upper head 1 at the peripheral portion of the gravure 11, so as to eliminate the visual appearance of the gravure 11. However, in the beating and pressing process, the upper end enclosure 1 is hollow, and no supporting piece supports the raised seal 12 and the part of the inner wall of the upper end enclosure 1 around the raised seal 12, so that the outer wall of the upper end enclosure 1 is integrally uneven due to beating and pressing, a liquefied gas user can easily recognize that the upper end enclosure 1 is renovated, and therefore the liquefied gas user refuses to receive and use the liquefied gas, and the gas use safety of the user is greatly improved.

The embodiment also provides a production method of the liquefied gas steel cylinder, taking a large liquefied gas steel cylinder as an example, the production and mutual assembly processes of the cylinder 7, the lower end enclosure 2, the base 3, the retainer 4, the valve seat 5 and the cylinder valve 6 are consistent with those of the prior art, and the production method of the upper end enclosure 1 is different from that of the prior art without repeated description in the embodiment.

One of the production methods of the upper head 1 comprises the following steps: the front side and the back side of a steel plate are respectively extruded by an upper metal die and a lower metal die, so that a gravure 11 is formed in the middle of the front side of the steel plate, a raised seal 12 is formed in the middle of the back side of the steel plate, the gravure 11 and the raised seal 12 are opposite along the normal direction of the steel plate, a steel seal is formed on the part of the steel plate between the gravure 11 and the raised seal 12, the steel seal displays a manufacturer code and a steel plate delivery year number, then the steel plate is punched into an arc-shaped upper end enclosure 1 by using a hydraulic punch press, wherein the front side of the steel plate is the outer wall of the upper end enclosure 1, the back side of the steel plate is the inner wall of the upper end enclosure 1, and.

Another production method of the upper head 1 comprises the following steps: utilize hydraulic press punching press steel sheet for the steel sheet is crooked gradually and is formed upper cover 1, and the punching press in-process utilizes hydraulic ram head mould to punch out gravure 11 simultaneously in the middle of the steel sheet openly and punches out embossing 12 in the middle of the steel sheet back, and the front of steel sheet forms the outer wall of upper cover 1, and the back of steel sheet is the inner wall of upper cover 1, and gravure 11 and embossing 12 are relative in the footpath of upper cover 1.

While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the invention as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.