Anti-overfilling steel cylinder

Abstract

The utility model discloses an anti-overcharge steel cylinder which comprises a steel cylinder, a gas injection pipe is arranged on the steel cylinder, an anti-overcharge valve is arranged on the gas injection pipe, the anti-overcharge valve comprises a valve body, a valve core and a valve rod, a valve cavity is arranged in the valve body, a gas inlet hole, a gas outlet hole and a warning hole are arranged in the valve cavity, the gas injection pipe is connected with the gas inlet hole, the gas outlet hole is communicated with the inside of the steel cylinder, and the gas injection pipe is connected with the valve core. A warning hole is formed in the valve body, a valve rod is inserted into the warning hole and is in sliding sealing with the warning hole, a valve element is arranged in the valve cavity, one end of the valve rod is located in the valve cavity and is fixedly connected with the valve element, and the other end of the valve rod is located on the outer side of the valve body. The valve element is jacked up through the combination of the air pressure in the steel cylinder and the air pressure of the externally injected air, so that the valve rod protrudes out of the warning hole, and a worker is informed that the steel cylinder is full of the air.

Description

Technical Field

[0001] This utility model relates to the field of steel cylinder technology, and in particular to an overfill-proof steel cylinder. Background Technology

[0002] To prevent gas cylinder explosions, the most crucial method during cylinder use is controlling the internal pressure. Many users focus on pressure balance during operation but overlook the risk of overfilling, especially with single-outlet cylinders lacking a separate vapor phase valve. This can easily lead to a high liquid level, which, once vaporized, causes the liquefied gas to expand, posing a significant safety hazard. To address these issues, a solution is proposed below. Utility Model Content

[0003] The purpose of this invention is to provide an overfill-proof steel cylinder that can serve as a warning when injecting gas or liquid and prevent overfilling.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] An overfill-proof steel cylinder includes a steel cylinder with an injection pipe and an overfill-proof valve. The overfill-proof valve includes a valve body, a valve core, and a valve stem. The valve body has a valve cavity with an inlet, an outlet, and a warning hole. The injection pipe is connected to the inlet, and the outlet communicates with the inside of the steel cylinder. The valve stem is inserted into the warning hole and slides in a seal with it. The valve core is located in the valve cavity, one end of the valve stem is located in the valve cavity and is fixedly connected to the valve core, and the other end of the valve stem is located outside the valve body.

[0006] Preferably, the air inlet is located on the lower side of one side of the valve cavity, the air outlet is located at the lower end of the valve cavity, the warning hole is located at the upper end of the valve cavity, the valve core slides and seals with the valve cavity, and when the valve core is located at the lowermost end of the valve cavity, the air inlet and air outlet are sealed.

[0007] Preferably, the valve body is provided with a warning tube, the warning hole is located inside the warning tube, and a valve cover is provided at the end of the valve stem outside the warning tube. The valve cover is rotatably connected to the valve stem, and the valve cover is threadedly connected to the end of the warning tube.

[0008] Preferably, a pressure gauge is provided on the valve body, the pressure gauge is located at the air outlet end of the valve body and communicates with the air outlet.

[0009] Preferably, an air inlet pipe is fixed on the valve body, the air inlet hole is located inside the air inlet pipe, the air inlet pipe is threaded, and the air inlet pipe is connected to the outside through the thread.

[0010] The beneficial effects of this utility model are as follows: when injecting gas or liquid into the cylinder, the pressure gauge can monitor the gas pressure inside the cylinder in real time, and when the gas pressure inside the cylinder is too high, it will push the valve core to move upward, causing the valve stem to move upward, thereby alerting the staff. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0012] Figure 2 This is a cross-sectional view of the overcharge protection valve in an embodiment.

[0013] Attached reference numerals: 1. Gas cylinder; 2. Gas filling pipe; 3. Overfill prevention valve; 4. Valve body; 5. Valve core; 6. Valve stem; 7. Valve cavity; 8. Gas inlet; 9. Gas outlet; 10. Warning hole; 11. Warning tube; 12. Valve cover; 13. Pressure gauge; 14. Gas inlet pipe. Detailed Implementation

[0014] The following description is merely a preferred embodiment of this utility model, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of this utility model's concept should be protected. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom" and "top," "inner" and "outer" refer to directions toward or away from the geometric center of a specific component.

[0015] like Figure 1 and Figure 2 As shown, an overfill-proof gas cylinder includes a gas cylinder 1, an injection pipe 2 on the gas cylinder 1, and an overfill-proof valve 3 on the injection pipe 2. The overfill-proof valve 3 includes a valve body 4, a valve core 5, and a valve stem 6. The valve body 4 is fixed to the gas cylinder 1, and a valve cavity 7 is provided inside the valve body 4. The valve core 5 is located inside the valve cavity 7.

[0016] In this design, the valve chamber 7 is cylindrical, meaning its longitudinal cross-section is square. The valve core 5 is located inside the valve chamber 7 and slides in a seal with it. The valve chamber 7 has an inlet 8 and an outlet 9. The air injection pipe 2 is connected to the inlet 8, and the outlet 9 communicates with the interior of the gas cylinder 1. The inlet 8 is located on the lower side of one side of the valve chamber 7, and the outlet 9 is located at the lower end of the valve chamber 7. When the valve core 5 is at the lowest point of the valve chamber 7, it will block both the inlet 8 and the outlet 9.

[0017] An air inlet pipe 14 is fixed on the valve body 4, and an air inlet hole 8 is located inside the air inlet pipe 14. The air inlet pipe 14 is threaded. After the gas cylinder 1 is filled with gas or liquid, the gas injection pipe 2 can be removed from the air inlet pipe 14 and an external valve or pipe for venting can be installed so that the gas in the gas cylinder 1 can be ejected from the air inlet pipe 14.

[0018] A pressure gauge 13 is installed on the valve body 4. The pressure gauge 13 is located at the gas outlet end of the valve body 4 and is connected to the gas outlet 9. When gas is injected into the gas cylinder 1, the pressure gauge 13 can monitor the gas pressure value inside the gas cylinder 1 in real time, so as to know the gas pressure value inside the gas cylinder 1 in real time.

[0019] The valve body 4 is equipped with a warning tube 11, and a warning hole 10 is opened inside the warning tube 11, which communicates with the inside of the valve cavity 7. The valve stem 6 is inserted into the warning hole 10 and slides and seals with the warning hole 10. One end of the valve stem 6 is located inside the valve cavity 7 and is fixedly connected to the valve core 5, while the other end of the valve stem 6 is located outside the valve body 4. There is friction between the valve core 5 and the valve cavity 7, and between the valve stem 6 and the warning hole 10. When the thrust generated by the gas pressure inside the cylinder 1 is greater than these two frictional resistances, it will push the valve core 5 and the valve stem 6 to move upward, making the length of the valve stem 6 extending outside the warning tube 11 longer and longer. A warning color, such as red, can be painted on the lower end of the valve stem 6. When the red part is exposed outside the warning tube 11, it indicates that the gas pressure inside the cylinder 1 is too high, and gas filling needs to be stopped.

[0020] A valve cover 12 is provided at the end of the valve stem 6 located outside the warning tube 11. The valve cover 12 is rotatably connected to the valve stem 6, and the end of the valve cover 12 is threadedly connected to the end of the warning tube 11. After the air injection is completed, the valve stem 6 is pressed down, and then connected to the warning tube 11 through the valve cover 12, so that the valve core 5 moves to the lowest end of the valve cavity 7, sealing both the air inlet 8 and the air outlet 9.

[0021] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An overfilling prevention type cylinder comprising a cylinder (1), characterized by, The gas injection pipe (2) is arranged on the steel cylinder (1), the anti-overfilling valve (3) is arranged on the gas injection pipe (2), the anti-overfilling valve (3) comprises a valve body (4), a valve core (5) and a valve rod (6), the valve cavity (7) is arranged in the valve body (4), the air inlet hole (8), the air outlet hole (9) and the warning hole (10) are arranged in the valve cavity (7), the gas injection pipe (2) is connected with the air inlet hole (8), the air outlet hole (9) is communicated with the inside of the steel cylinder (1), the valve rod (6) is inserted in the warning hole (10) and is in sliding sealing with the warning hole (10), the valve core (5) is located in the valve cavity (7), one end of the valve rod (6) is located in the valve cavity (7) and is fixedly connected with the valve core (5), the other end of the valve rod (6) is located outside the valve body (4).

2. The overfill-preventing cylinder according to claim 1, wherein The air inlet hole (8) is located on the lower side of one side of the valve cavity (7), the air outlet hole (9) is located at the lower end of the valve cavity (7), the warning hole (10) is located at the upper end of the valve cavity (7), the valve core (5) is in sliding sealing with the valve cavity (7), and the valve core (5) seals the air inlet hole (8) and the air outlet hole (9) when being located at the lowermost end of the valve cavity (7).

3. The overfill-preventing cylinder according to claim 1, wherein The warning pipe (11) is arranged on the valve body (4), the warning hole (10) is located in the warning pipe (11), the valve cover (12) is arranged on one end of the valve rod (6) located outside the warning pipe (11), the valve cover (12) is rotatably connected with the valve rod (6), and the valve cover (12) is threadedly connected with the end of the warning pipe (11).

4. The overfill-preventing cylinder according to claim 1, wherein The pressure gauge (13) is arranged on the valve body (4), the pressure gauge (13) is located at the air outlet end of the valve body (4) and is communicated with the air outlet hole (9).

5. The overfill-preventing cylinder according to claim 1, wherein The air inlet pipe (14) is fixedly arranged on the valve body (4), the air inlet hole (8) is located in the air inlet pipe (14), the air inlet pipe (14) is provided with threads, and the air inlet pipe (14) is connected with the outside through threads.

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