Cylinder valve for compressed natural gas cylinders with integrated pressure reduction function

Abstract

The present invention relates to a cylinder valve for compressed natural gas cylinder with integrated pressure reducing function, which is connected to a general burner in a plug and play manner. The cylinder gas of the present invention is improved to increase the safety of gas use and to make it easier to adjust the required gas flow rate. The cylinder valve comprises a first part as an improved part, a second part as a main part directly connected to compressed natural gas, and a third part as an evaporator part. The second part contains a diaphragm in order to accelerate the gas flow, and the third part is an evaporator which is used to overcome the clogging by accelerating the evaporation of the clogging formed due to the cooling caused by the pressure drop.

Description

Technical Field

[0001] This invention relates to cylinder valves for gas cylinders, particularly for compressed natural gas (CNG) typically pressurized to 200 bar or 3000 psi. The valve depressurizes the CNG stored in the cylinder at 200 bar to 1 to 6 bar at the outlet. Therefore, CNG-containing cylinders can be used directly at high flow rates in stoves or other gas burners in homes, restaurants, hotels, and small-scale home manufacturing. With the cylinder valve of this invention, users can plug and play, converting LPG burners to CNG as their gas source. Background Technology

[0002] A previous patent disclosed a cylinder valve for compressed natural gas (CNG) cylinders with an integrated pressure regulator, publication number 2024 / 06594, published on August 14, 2024. This patent application, filed by the same applicant, has application number P00202401005. This patent application discloses an integrated compressed natural gas (CNG) cylinder valve with integrated pressure regulator for home, hotel, restaurant, cafe, and / or industrial needs.

[0003] The natural gas cylinder valve of this invention consists of a main body equipped with four components: a manual gas on / off valve, a filling valve, an outlet valve, and a pressure reducing unit. These four components are integrated into a single unit. Therefore, the structure is compact and monolithic, requiring no piping connections. The filling valve is a one-way filling valve device used to protect the cylinder from back pressure after CNG filling. The pressure reducing unit is a device used to maintain the set outlet pressure (1 bar to 6 bar) of the CNG cylinder. The outlet valve is a valve device that releases CNG only when an external LPG regulator is connected. Therefore, this cylinder valve is compatible with 12 kg and 50 kg LPG types.

[0004] The valve described in the aforementioned patent application still has flow limitations and therefore requires improvement. This improvement can be achieved by adding a diaphragm before it enters the burner or gas stove. The presence of this diaphragm can increase the flow rate by up to three times. Summary of the Invention

[0005] This invention relates to a gas cylinder valve, which is improved for use in gas stoves or burners that use compressed natural gas as a gas source. In this invention, the gas cylinder valve includes the following parts. The first part, as an improvement, includes: a.1. Ten locking bolts, consisting of four primary locking bolts (Level 1 locking bolts) (1A), four secondary locking bolts (Level 2 locking nuts) (1B), and two locking bolts (1C) located between the valve and the diaphragm housing (from the main valve body to the main housing), the locking bolts (1C) being used to connect the primary diaphragm and the secondary diaphragm (secondary diaphragm housing) and to integrate the valve with the diaphragm housing; a.2. Secondary diaphragm housing (2), used to house the secondary spring (3), locking bolt (4), diaphragm fixing plate ring (5) and circular O-ring (6); a.3. Secondary spring (3); a.4. Locking nut (locking bolt) (4); a.5. Diaphragm fixing ring (5); a.6. Circular O-ring (6); a.7. Secondary membrane (2nd stage membrane) (7); a.8. Circular O-ring (8); a.9. Diaphragm fixing plate ring (9); a.10. Diaphragm main housing (10); a.11. An outlet connector (11) for housing a C-clamp (12), a secondary spring retainer (13), a secondary spring (14), and a secondary valve (15), and mating with a secondary valve housing (16); a.12. Adapter C-clamp (12); a.13. Adapter spring retainer (13); a.14. Secondary spring (14); a.16. G52 adapter valve housing (16), which can be directly connected to various gas burners; a.17. An explosion-proof disc housing, which is paired with the diaphragm main housing (10) and used to house the explosion-proof disc spring (18), and the explosion-proof disc (19) is used for overpressure protection; a.18. Explosion-proof sheet spring (18); a.19. Explosion-proof sheet (19); a.20. Secondary valve seat (20); a.21. Valve seat limiter (21); a.22. First-stage putter (22); a.23. First-stage valve stem (23); a.24. Pusher shaft (push rod shaft) (24); a.25. Push rod guide rod (25); a.26. Diaphragm fixing ring (26); a.27. Primary membrane (27); a.28. Diaphragm fixing ring (28); a.29. Small diaphragm fixing ring (29); a.30. Lock nut (30); a.31. First-stage spring (31); a.32. Primary diaphragm housing (32) for housing the diaphragm retaining ring (28), the small diaphragm retaining ring (29), the locking nut (30) and the primary spring (31).

[0006] Furthermore, the gas cylinder valve of the present invention is further divided into a second part, which is a main part, and the second part includes: b.1. Cover bolt (plug bolt) (33); b.2. Temperature safety valve (34); b.3. Ball valve body (35); b.4. Primary pressure reducing valve (36); b.5. Ball valve (37); b.6. Ball valve retainer (38); b.7. Ball valve seal (39); b.8. Valve stem (40); b.9. Circular O-ring (41); b.10. Valve lock (gland nut) (42); b.11. Valve rotating device (valve handle) (43); b.12. Lock nut (44); b.13. Primary spring (45); b.14. Check valve (46); b.15. Quick coupling (47); b.16. Secondary spring retainer (48); b.17. Secondary spring (49); b.18. Secondary valve (50); and b.19. Secondary valve housing (51).

[0007] Optionally, the gas cylinder valve may also be equipped with a third part as a cold radiation device, which may be made of an aluminum plate. This cold radiation plate may be placed on the left and right sides of the gas valve of the present invention. The cold radiation device of the valve of the present invention is evaporator A (52) and evaporator B (53). Attached Figure Description

[0008] Figure 1 is a perspective view of a complete gas cylinder valve according to an embodiment of the present invention.

[0009] Figure 2 is a detailed schematic diagram of each component of the first part according to an embodiment of the present invention.

[0010] Figure 3 is a detailed schematic diagram of each component of the second part according to an embodiment of the present invention.

[0011] Figure 4 is a complete schematic diagram of the evaporator of the present invention. Detailed Implementation

[0012] For a fuller understanding, the invention will be described in more detail with reference to the accompanying drawings and the reference numerals which will be further explained below. Referring to FIG1, which is a perspective view of an embodiment of the gas cylinder valve of the present invention, it can be seen that the top can be connected to a gas stove or a general gas burner. Meanwhile, the bottom, equipped with threads (black), is a portion that can be connected to a gas cylinder capable of holding compressed natural gas. Cooling plates with shapes adapted to the gas cylinder valve of the present invention are provided on the left and right sides.

[0013] Reference Figure 2A and Figure 2B , Figure 2A and Figure 2B This is a perspective view of an embodiment of the present invention, showing each component constituting the first part of the gas cylinder valve. The first part comprises 32 (thirty-two) components, which will be further explained. The first part is an improvement on the prior art to enhance the gas flow capacity and volume. The first part includes a plurality of locking bolts for connecting the spring housing and the primary pressure regulating diaphragm to the diaphragm main housing and the second part. The locking bolts consist of four primary locking bolts (Level 1 locking bolts) (1A), four secondary locking bolts (Level 2 locking bolts) (1B), and two tertiary locking bolts (Level 3 locking bolts) (1C). The four primary locking bolts (1A) are used to connect the spring housing to the primary pressure regulating diaphragm on the diaphragm main housing. The four secondary locking bolts (1B) are used to connect the spring housing to the secondary pressure regulating diaphragm in the diaphragm main housing. Simultaneously, two bolts for locking the gas cylinder valve and the diaphragm housing securely connect the first and second parts of the gas cylinder valve of the present invention.

[0014] The first part is also equipped with a secondary diaphragm housing (2). This housing contains a secondary spring (3), a locking nut (4), a diaphragm retaining ring (5), and a circular O-ring (6). The secondary spring (3) is used to adjust the secondary gas outlet pressure. The locking nut (4) is required to ensure the secondary valve is in a fixed position. The diaphragm retaining ring (5) is installed to ensure the strength of the diaphragm in this invention. The circular O-ring (6) is also required to ensure that gas does not escape.

[0015] The first part of the invention is also equipped with a secondary diaphragm (7) for regulating the outlet pressure of the secondary gas. To ensure that the gas does not escape or leak, the gas cylinder valve of the invention is equipped with a circular O-ring (8). The secondary diaphragm is reinforced by a diaphragm fixing plate ring (9).

[0016] The diaphragm of the present invention requires a separate housing, referred to as the diaphragm main housing (10). Within this housing are primary and secondary pressure reduction positions. In use, the valve of the present invention is also equipped with a 50 kg LPG gas outlet connector (outlet connector) (11) for connection to a liquefied petroleum gas (LPG) valve. This adapter connector houses a C-clamp (12), an adapter spring retainer (13), an adapter spring valve (14), and a valve adapter (15). This outlet is required for users of 3 kg and 12 kg types of LPG. In addition, the connector can be paired with the commercially available G52 adapter (16) for LPG-fueled cylinders. The C-clamp (12) secures the adapter valve for 50 kg and / or 12 kg LPG gas.

[0017] The first part also includes a diaphragm housing, which is connected to the diaphragm main housing (10) and serves to house the diaphragm spring (18) and the diaphragm (19). A diaphragm housing safety device (not visible) is housed within this diaphragm housing. This diaphragm ensures safety in the event of leakage, overpressure, or other gas-related problems. Simultaneously, the diaphragm spring (18) is a device for protecting the diaphragm housing, which functions by releasing gas when the pressure within the diaphragm housing exceeds a specified limit (e.g., 15 bar). On the other hand, the diaphragm (19) is a device for securing the valve, and it releases gas when the pressure within the diaphragm housing exceeds a predetermined pressure (e.g., 15 bar).

[0018] Another component of the first part is the secondary valve seat (20), which is used to regulate the secondary gas outlet pressure. This valve is fixed by a seat limiter (21), which restricts the movement or displacement of the secondary valve seat (20) within a certain distance. The movement or displacement of the secondary valve seat (20) can be achieved by converting horizontal movement to vertical movement or vice versa via the primary push rod (22). The primary outlet gas pressure is regulated via the primary valve stem (23). The primary push rod hinge (22) and the primary valve stem (23) are connected to the push rod shaft (24) so ​​that the position of the valve hinge can be locked. To guide the movement of the valve, a push rod guide component (25) is required as a guide rod for the valve movement; the push rod guide component is attached to the primary push rod hinge (22).

[0019] When reinforcing the first part, a diaphragm fixing ring (26) is also provided. The diaphragm fixing ring (26) is used to reinforce the inner diaphragm. At the same time, the adjustment of the first-stage outlet gas pressure is performed by using the first-stage diaphragm (27). Meanwhile, a diaphragm fixing ring (28) is provided to reinforce the diaphragm. The diaphragm structure of the present invention is reinforced by a small ring (29) that acts as a diaphragm retainer, and is used to better lock the nut. When locked, a locking bolt (30) is provided so that the bolt can lock the valve stem to the diaphragm. The outer end of the first part of the present invention is equipped with a first-stage spring (31), which is used to adjust the first-stage gas outlet pressure. The first-stage spring (31) is paired with the first-stage diaphragm housing (32) that supports it. The housing can then be fixed / locked by four first-stage locking nuts (1A).

[0020] The gas cylinder valve of the present invention also includes a second part as a main component, which is connected to the first part described above. This second part consists of components labeled 33 to 51 in the following figures. The second part has a plug bolt component (33) for closing the valve. For safety during filling or use of gas, the valve of the present invention is equipped with a temperature safety valve (34). The temperature safety valve serves as a safety device mounted on the valve and operates by releasing gas when the pressure within the diaphragm housing (10) exceeds 300 bar or the temperature exceeds °C. Another component that serves as the main support for the second part of the invention is a ball valve housing (35). This housing is used to house the ball valve (37). The ball valve is used to open and close the gas exiting the gas cylinder. The high pressure of the gas exiting the gas cylinder can be reduced by a primary pressure reducing valve (36).

[0021] To ensure that the ball valve (37) remains in its original position, the second part of the invention is equipped with a ball valve retainer (38). This ball valve retainer is used to keep the ball valve (37) in its original position and prevent it from moving out of its original position. At the same time, to ensure that the gas cylinder valve of the present invention does not leak, it is equipped with a ball valve seal (39). In this way, the contents of the gas cylinder with the valve of the present invention installed can be guaranteed to be safe and leak-free.

[0022] Gas inflow and outflow from the gas cylinder can be controlled by a ball valve equipped with a device for opening or closing the gas. This device takes the form of a valve stem (40). The valve stem (40) is also equipped with a circular O-ring (41) to prevent gas from seeping into the valve stem and causing leakage. On the other hand, to ensure that the valve stem and O-ring of the valve of the present invention remain in place, a valve lock (compression nut) (42) is provided. To open and close the valve, the present invention provides a device (valve handle) (43) for rotating the valve. By rotating the valve, the valve can be opened when the valve of the present invention is in use and closed when not in use. Gas can flow when the valve is open and stops flowing when the valve is closed. The valve rotating device is also equipped with a locking nut (44) to lock the valve rotation.

[0023] When the valve of the present invention is attached to a gas cylinder, it is equipped with a filling device for convenient filling of the cylinder. The filling device includes a primary spring (45). When not filling, the spring pushes a one-way valve in an attempt to close the filling device. Another component of the filling device is a one-way valve (46). When not filling, this valve is closed by the thrust of the primary spring (45), and when filling, the valve is opened. The next component constituting the filling device is a quick connector (47). This quick connector makes it easier to fill the gas cylinder with the valve of the present invention. The filling device is also equipped with a secondary spring (49). This secondary spring allows filling to be performed because the secondary valve (50) is closed when the secondary valve is not connected to the filling valve. All components of the filling device are housed in the secondary valve housing (51), which is paired with the quick connector (47).

[0024] The third part of the gas cylinder valve of the present invention is the evaporator section. This part can also be used as a supplementary part, which is used to evaporate steam or dew formed due to use or other conditions, thereby protecting the valve of the present invention from blockage due to dew or steam. This part consists of a first evaporator (evaporator A) (52) and a second evaporator (evaporator B) (53). The shape of the evaporators can vary, and they are usually made of aluminum, using a plate arrangement similar to that of a general evaporator.

[0025] The material used for the gas cylinder valve of this invention can be stainless steel. However, in a preferred embodiment of the invention, the materials used are as follows: The first part, as an improved material, can be made of aluminum. The second part is the main part. The majority of the material is made of brass and / or steel, while the third part can be made of aluminum.

[0026] The entire disclosure and accompanying drawings in this specification represent preferred embodiments, and other modifications are also possible. However, the main scope of the invention is as described in the claims.

Claims

1. An improved compressed natural gas (CNG) cylinder valve with an integrated enhanced pressure regulator for residential, hotel, restaurant, cafe, and / or industrial applications, comprising: a. A first part directly connected to a gas stove, characterized in that the first part comprises: a.

1. Eight locking nuts (1) for locking the secondary diaphragm housing (2); a.

2. Secondary diaphragm housing (2), used to house the secondary spring (3), locking bolt (4), diaphragm fixing plate ring (5) and circular O-ring (6); a.

3. Secondary spring (3); a.

4. Locking bolts (4); a.

5. Diaphragm fixing ring (5); a.

6. Circular O-ring (6); a.

7. Secondary membrane (2nd stage membrane) (7); a.

8. Circular O-ring (8); a.

9. Diaphragm fixing plate ring (9); a.

10. Diaphragm main housing (10); a.

11. An outlet connector (11) for housing the adapter C-clamp (12), the adapter spring retainer (13), the adapter spring (14), and the adapter valve (valve adapter) (15), and mating with the valve adapter housing (16); a.

12. C-shaped clip (12); a.

13. Adapter spring retainer (13); a.

14. Adapter spring (spring adapter) (14). a.

16. Adapter valve housing (16) which is capable of direct connection to a 3 KG and / or 12 KG type gas burner; a.

17. An explosion-proof disc housing, which is paired with the diaphragm main housing (10) and is used to house the explosion-proof disc spring (18) and the explosion-proof disc (19). a.

18. Explosion-proof sheet spring (18); a.

19. Explosion-proof sheet (19); a.

20. Secondary valve seat (20); a.

21. Valve seat limiter (21); a.

22. First-stage putter (22); a.

23. First-stage valve stem (23); a.

24. Pusher shaft (push rod shaft) (24); a.

25. Push rod guide rod (25); a.

26. Diaphragm fixing ring (26); a.

27. Primary membrane (27); a.

28. Diaphragm fixing ring (28); a.

29. Small diaphragm fixing plate ring (29); a.

30. Lock nut (30); a.

31. First-stage spring (31); a.

32. A primary diaphragm housing (32) for housing the diaphragm fixing ring (28), the small diaphragm fixing ring (29), the locking nut (30), and the primary spring (31). b. A second part directly connected to the gas cylinder and to the first part, including: b.

1. Cover bolt (plug bolt) (33); b.

2. Temperature safety valve (34); b.

3. Ball valve body (35); b.

4. Primary pressure reducing valve (36); b.

5. Ball valve (37); b.

6. Ball valve retainer (38); b.

7. Ball valve seal (39); b.

8. Valve stem (40); b.

9. Circular O-ring (41); b.

10. Valve lock (gland nut) (42); b.

11. Valve rotating device (valve handle) (43); b.

12. Locking bolts (locking nuts) (44); b.

13. Primary spring (45); b.

14. Check valve (46); b.

15. Quick coupling (47); b.

16. Secondary spring retainer (48); b.

17. Secondary spring (49); b.

18. Secondary valve (50); and b.

19. Secondary valve housing (51); and c. The right-side cooling plate and the left-side cooling plate are evaporator A (52) and evaporator B (53).

2. The compressed natural gas (CNG) cylinder valve with an integrated pressure reducing regulator according to claim 1, wherein, The first part and the cooling plate are primarily made of aluminum, while the second part used is made of brass and / or stainless steel.

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