Combination valve of hydrogen cylinder

Abstract

The utility model provides a hydrogen cylinder combination valve which comprises a main body, a flow guide nozzle and a control part, and a hydrogen channel is arranged in the main body; the flow guide nozzle is connected with the end, close to the hydrogen cylinder, of the body and inserted into the hydrogen cylinder, the flow guide nozzle is provided with a flow guide channel, the flow guide channel is communicated with the hydrogen channel, and the flow guide channel is a non-straight channel. By adopting the scheme, the main body is arranged at the bottle opening of the hydrogen bottle, the flow guide nozzle is inserted into the hydrogen bottle, the hydrogen channel is communicated with the inside of the hydrogen bottle through the flow guide nozzle, and the flow guide channel of the flow guide nozzle is a non-straight channel, so that the circulation of hydrogen is smoother, and the hydrogen can form a relatively stable temperature field in the hydrogen bottle.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and in particular to a combined valve for a hydrogen cylinder. Background Art

[0002] Hydrogen is added to the hydrogen cylinder through the hydrogen filling joint and the hydrogen cylinder combined valve, and the hydrogen reaches the hydrogen cylinder through the hydrogen channel and the guide nozzle. The hydrogen in the hydrogen cylinder is supplied to the hydrogen-using equipment through the guide nozzle, the hydrogen channel and the hydrogen supply joint.

[0003] During the hydrogenation process, if the hydrogen enters the hydrogen cylinder too quickly, it may cause the temperature inside the hydrogen cylinder to rise rapidly, which may cause danger. Therefore, it is necessary to detect the temperature inside the hydrogen cylinder to avoid danger. Since the hydrogen enters the hydrogen cylinder quickly, the hydrogen flow is not stable enough to form a stable temperature field, resulting in inaccurate temperature detection inside the hydrogen cylinder. Utility Model Content

[0004] The utility model provides a hydrogen bottle combined valve to solve the problem of excessively fast and unstable hydrogen flow rate in the prior art.

[0005] In order to solve the above problems, the utility model provides a hydrogen cylinder combination valve, including a main body and a guide nozzle, the main body having a hydrogen channel; the guide nozzle is connected to one end of the main body close to the hydrogen cylinder, the guide nozzle is used to insert the hydrogen cylinder, the guide nozzle has a guide channel, the guide channel is connected to the hydrogen channel, and the guide channel is a non-straight channel.

[0006] Furthermore, the flow guide nozzle includes a flow guide pipe, the flow guide channel is arranged in the flow guide pipe, and the flow guide pipe is a curved pipe with a wave shape.

[0007] Furthermore, the guide pipe includes a first section, a second section, a third section and a fourth section connected in sequence, the end of the first section away from the second section is connected to the main body, the first section is a straight pipe, the second section is a curved pipe, the third section is a straight pipe, and the fourth section is a curved pipe.

[0008] Furthermore, the hydrogen cylinder combination valve also includes a temperature sensor, which is used to monitor the temperature inside the hydrogen cylinder. Along the axial direction of the hydrogen cylinder, the distance between the end of the guide nozzle away from the main body and the main body is greater than the distance between the end of the temperature sensor away from the main body and the main body.

[0009] Furthermore, the hydrogen cylinder combination valve also includes a fastener, the guide nozzle includes a guide tube and an ear piece, the ear piece is connected to one end of the guide tube close to the main body, and the fastener is used to fix the ear piece to the main body.

[0010] Further, the hydrogen cylinder combined valve further includes an overcurrent valve, which is arranged at one end of the hydrogen channel close to the diversion nozzle. The overcurrent valve has a flowing state and a closed state. When gas is input into the hydrogen cylinder, the overcurrent valve is in the flowing state. When the hydrogen flow rate output from the hydrogen cylinder is less than the set value, the overcurrent valve is in the flowing state. When the hydrogen flow rate output from the hydrogen cylinder is greater than or equal to the set value, the overcurrent valve is in the closed state.

[0011] Further, the overcurrent valve includes an elastic member and a piston. One end of the elastic member abuts against the diversion nozzle, and the other end of the elastic member is connected to the piston. When the hydrogen flow rate output from the hydrogen cylinder is less than the set value, the piston opens the hydrogen channel. When the hydrogen flow rate output from the hydrogen cylinder is greater than or equal to the set value, the piston blocks the hydrogen channel; when hydrogen is supplied into the hydrogen cylinder, the piston opens the hydrogen channel.

[0012] Further, one end of the piston close to the hydrogen channel is conical, and the piston performs a linear seal on the end of the hydrogen channel.

[0013] Further, the hydrogen cylinder combined valve further includes a hydrogenation joint, which is connected to the main body. The hydrogenation joint is communicated with the hydrogen channel to supply hydrogen to the hydrogen cylinder.

[0014] Further, the hydrogen cylinder combined valve further includes a hydrogen supply joint, which is connected to the main body. The hydrogen supply joint is communicated with the hydrogen channel to output the hydrogen of the hydrogen cylinder.

[0015] Applying the technical solution of the present utility model, a hydrogen cylinder combined valve is provided, which includes a main body, a diversion nozzle and a control part. The main body has a hydrogen channel therein; the diversion nozzle is connected to one end of the main body close to the hydrogen cylinder, and the diversion nozzle is inserted into the hydrogen cylinder. The diversion nozzle has a diversion channel, and the diversion channel is communicated with the hydrogen channel. The diversion channel is a non-straight channel. Adopting this solution, the main body is installed at the bottle mouth of the hydrogen cylinder, the diversion nozzle is inserted into the hydrogen cylinder, the hydrogen channel is communicated with the inside of the hydrogen cylinder through the diversion nozzle, and the diversion channel of the diversion nozzle is a non-straight channel, so that the flow of hydrogen is smoother, and a relatively stable temperature field can be formed in the hydrogen cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0017] Figure 1 shows a schematic structural diagram of the hydrogen cylinder combined valve provided by the embodiment of the present utility model;

[0018] Figure 2 shows Figure 1 a cross-sectional view taken along line A-A in

[0019] Figure 3 shows the Figure 1 top view of the hydrogen cylinder combined valve in

[0020] Among them, the above-mentioned drawings include the following reference numerals:

[0021] 10, main body; 11, hydrogen channel;

[0022] 20, diversion nozzle; 21, diversion channel; 22, diversion pipe; 23, lug;

[0023] 31, temperature sensor; 32, overcurrent valve; 321, elastic member; 322, piston;

[0024] 40, fastener;

[0025] 51, hydrogenation joint; 52, hydrogen supply joint;

[0026] 60, stop valve. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restrictive of the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] As Figures 1 to 3 shown, the embodiment of the present invention provides a hydrogen cylinder combined valve, including a main body 10 and a diversion nozzle 20. The main body 10 has a hydrogen channel 11 inside; the diversion nozzle 20 is connected to one end of the main body 10 close to the hydrogen cylinder. The diversion nozzle 20 is used to insert into the hydrogen cylinder. The diversion nozzle 20 has a diversion channel 21, and the diversion channel 21 is communicated with the hydrogen channel 11. The diversion channel 21 is a non-straight channel.

[0029] Adopting this solution, the main body 10 is installed at the mouth of the hydrogen cylinder, the diversion nozzle 20 is inserted into the hydrogen cylinder, the hydrogen channel 11 is communicated with the inside of the hydrogen cylinder through the diversion nozzle 20, and the diversion channel 21 of the diversion nozzle 20 is a non-straight channel, so that the flow of hydrogen is smoother, and the hydrogen can form a relatively stable temperature field in the hydrogen cylinder.

[0030] As Figure 2 shown, the diversion nozzle 20 includes a diversion pipe 22, the diversion channel 21 is arranged inside the diversion pipe 22, and the diversion pipe 22 is a corrugated bent pipe.

[0031] The guide tube 22 is set as a wavy curved tube, so that the guide channel 21 inside the guide tube 22 is wavy. The wavy guide channel 21 makes the flow of hydrogen slower, and the hydrogen can be injected into the hydrogen cylinder more smoothly, forming a relatively stable temperature field.

[0032] like Figure 2 As shown, the guide tube 22 includes a first section, a second section, a third section and a fourth section connected in sequence, the end of the first section away from the second section is connected to the main body 10, the first section is a straight tube, the second section is a curved tube, the third section is a straight tube, and the fourth section is a curved tube.

[0033] In a specific embodiment of the present invention, the second section and the fourth section are curved pipes, which can reduce the flow velocity of hydrogen and make the flow of hydrogen smoother. The first section and the third section are straight pipes, and the curvature of the second section and the curvature of the fourth section are set in opposite directions, so that the end of the guide tube 22 away from the main body 10 will not deviate from the axis of the first section, thereby avoiding the guide tube 22 being too large and difficult to put into the hydrogen cylinder.

[0034] like Figure 1 As shown, the hydrogen cylinder combination valve also includes a temperature sensor 31, which is used to monitor the temperature inside the hydrogen cylinder. Along the axial direction of the hydrogen cylinder, the distance between the end of the guide nozzle 20 away from the main body 10 and the main body 10 is greater than the distance between the end of the temperature sensor 31 away from the main body 10 and the main body 10.

[0035] It is understandable that the temperature sensor 31 monitors the temperature in the hydrogen cylinder. When the temperature in the hydrogen cylinder exceeds the set value, the hydrogen supply to the hydrogen cylinder will be stopped to avoid the danger of excessive temperature in the hydrogen cylinder. The distance between the end of the guide nozzle 20 away from the main body 10 and the main body 10 is greater than the distance between the end of the temperature sensor 31 away from the main body 10 and the main body 10. The hydrogen at the end of the temperature sensor 31 away from the main body 10 is relatively stable and has a uniform temperature, so that the temperature sensor 31 can detect a relatively stable temperature field and can more accurately determine the temperature in the hydrogen cylinder.

[0036] like Figure 1 As shown, the hydrogen cylinder combination valve also includes a fastener 40 , the guide nozzle 20 includes a guide tube 22 and an ear piece 23 , the ear piece 23 is connected to one end of the guide tube 22 close to the main body 10 , and the fastener 40 is used to fix the ear piece 23 to the main body 10 .

[0037] The fastener 40 fixes the ear piece 23 to the main body 10, and the fixation is more firm and not easy to loosen, which avoids the loosening of the guide nozzle 20 and the main body 10 by using threads in the prior art. The fastener 40 is used to connect the ear piece 23 and the main body 10, which can be disassembled multiple times and prevents the guide nozzle 20 from loosening, which is convenient for use.

[0038] As shown Figure 2 As shown, the hydrogen cylinder combined valve further includes an overcurrent valve 32. The overcurrent valve 32 is arranged at one end of the hydrogen channel 11 close to the diversion nozzle 20. The overcurrent valve 32 has a flowing state and a closed state. When gas is input into the hydrogen cylinder, the overcurrent valve 32 is in the flowing state. When the hydrogen flow rate output from the hydrogen cylinder is less than the set value, the overcurrent valve 32 is in the flowing state. When the hydrogen flow rate output from the hydrogen cylinder is greater than or equal to the set value, the overcurrent valve 32 is in the closed state.

[0039] The overcurrent valve 32 is used to control the flow rate of the hydrogen output from the hydrogen cylinder, and control the hydrogen flow rate output from the hydrogen cylinder within the set value, so as to avoid danger caused by too large hydrogen flow rate output.

[0040] As shown Figure 2 As shown, the overcurrent valve 32 includes an elastic member 321 and a piston 322. One end of the elastic member 321 abuts against the diversion nozzle 20, and the other end of the elastic member 321 is connected to the piston 322. When the hydrogen flow rate output from the hydrogen cylinder is less than the set value, the piston 322 opens the hydrogen channel 11. When the hydrogen flow rate output from the hydrogen cylinder is greater than or equal to the set value, the piston 322 blocks the hydrogen channel 11; when hydrogen is supplied to the hydrogen cylinder, the piston 322 opens the hydrogen channel 11.

[0041] It can be understood that when hydrogen is supplied to the hydrogen cylinder, hydrogen pushes the piston 322, causing the elastic member 321 to be compressed. When the hydrogen cylinder supplies hydrogen outward, hydrogen pushes the piston 322, causing the elastic member 321 to elongate. When the gas flow rate output from the hydrogen cylinder outward exceeds the set value, hydrogen pushes the elastic member 321 to elongate, and the piston 322 blocks the hydrogen channel 11, stopping the supply of hydrogen.

[0042] As shown Figure 2 As shown, one end of the piston 322 close to the hydrogen channel 11 is conical, and the piston 322 performs line sealing on the end of the hydrogen channel 11.

[0043] Designing one end of the piston 322 close to the hydrogen channel 11 to be conical makes the flow rate change gradually and smoothly during the process of the piston 322 blocking or releasing the hydrogen channel, and there will be no sudden change in the flow rate. The piston 322 performs line sealing on the end of the hydrogen channel 11, and the sealing is tighter and there will be no leakage.

[0044] As shown Figure 3 As shown, the hydrogen cylinder combined valve further includes a hydrogenation joint 51. The hydrogenation joint 51 is connected to the main body 10, and the hydrogenation joint 51 is communicated with the hydrogen channel 11 to supply hydrogen to the hydrogen cylinder.

[0045] It can be imagined that the hydrogenation joint 51 is connected to an external hydrogenation device to supply hydrogen to the hydrogen cylinder through the hydrogen channel 11.

[0046] As shown Figure 3As shown, the hydrogen cylinder combined valve further includes a hydrogen supply joint 52. The hydrogen supply joint 52 is connected to the main body 10 and is in communication with the hydrogen channel 11 to output the hydrogen in the hydrogen cylinder.

[0047] With such an arrangement, the hydrogen in the hydrogen cylinder is in communication with the hydrogen supply joint 52 through the hydrogen channel 11 to output the hydrogen in the hydrogen cylinder to the outside.

[0048] As Figure 2 shown, the hydrogen cylinder combined valve further includes a stop valve 60. The stop valve 60 is arranged in the main body 10 and is used to control the on-off of the hydrogen channel 11.

[0049] In a specific embodiment of the present utility model, the hydrogenation joint 51 and the hydrogen supply joint 52 share the same hydrogen channel 11. When the hydrogen flow rate is too large, the stop valve 60 cuts off the hydrogen channel.

[0050] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0051] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0052] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0053] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0054] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper" etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation other than the orientation described in the drawings for the device. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations should be made for the spatial relative descriptions used here.

[0055] In addition, it should be noted that the use of words such as "first", "second" etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statement, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present utility model.

Claims

1. A hydrogen cylinder combined valve, characterized in that, include: A main body (10), wherein the main body (10) has a hydrogen channel (11); A flow guide nozzle (20), the flow guide nozzle (20) being connected to one end of the main body (10) close to the hydrogen cylinder, the flow guide nozzle (20) being used to be inserted into the hydrogen cylinder, the flow guide nozzle (20) having a flow guide channel (21), the flow guide channel (21) being in communication with the hydrogen channel (11), and the flow guide channel (21) being a non-straight channel.

2. The hydrogen cylinder combined valve according to claim 1, characterized in that, The flow guide nozzle (20) comprises a flow guide pipe (22), the flow guide channel (21) is arranged in the flow guide pipe (22), and the flow guide pipe (22) is a curved pipe with a wave shape.

3. The hydrogen cylinder combined valve according to claim 2, characterized in that, The flow guide pipe (22) comprises a first section, a second section, a third section and a fourth section which are connected in sequence, wherein one end of the first section which is away from the second section is connected to the main body (10), the first section is a straight pipe, the second section is a curved pipe, the third section is a straight pipe, and the fourth section is a curved pipe.

4. The hydrogen cylinder combined valve according to claim 1, wherein, The hydrogen cylinder combined valve further comprises a temperature sensor (31), wherein the temperature sensor (31) is used to monitor the temperature in the hydrogen cylinder, and along the axial direction of the hydrogen cylinder, the distance between the end of the flow guide nozzle (20) away from the main body (10) and the main body (10) is greater than the distance between the end of the temperature sensor (31) away from the main body (10) and the main body (10).

5. The hydrogen cylinder combined valve according to claim 1, characterized in that, The hydrogen cylinder combination valve further comprises a fastener (40), the flow guide nozzle (20) comprises a flow guide tube (22) and an ear piece (23), the ear piece (23) is connected to an end of the flow guide tube (22) close to the main body (10), and the fastener (40) is used to fix the ear piece (23) to the main body (10).

6. The hydrogen cylinder combined valve according to claim 1, wherein The hydrogen cylinder combined valve further comprises an overflow valve (32), wherein the overflow valve (32) is arranged at one end of the hydrogen passage (11) close to the flow guide nozzle (20), and the overflow valve (32) has a flow state and a closed state. When gas is input into the hydrogen cylinder, the overflow valve (32) is in the flow state. When the hydrogen flow rate output by the hydrogen cylinder is less than a set value, the overflow valve (32) is in the flow state. When the hydrogen flow rate output by the hydrogen cylinder is greater than or equal to the set value, the overflow valve (32) is in the closed state.

7. The hydrogen cylinder combined valve according to claim 6, characterized in that, The excess flow valve (32) comprises an elastic member (321) and a piston (322), one end of the elastic member (321) abuts against the flow guide nozzle (20). The other end of the elastic member (321) is connected to the piston (322); when the hydrogen flow rate output by the hydrogen bottle is less than the set value, the piston (322) opens the hydrogen channel (11); when the hydrogen flow rate output by the hydrogen bottle is greater than or equal to the set value, the piston (322) blocks the hydrogen channel (11); when hydrogen is transported into the hydrogen bottle, the piston (322) opens the hydrogen channel (11).

8. The hydrogen cylinder combined valve according to claim 7, characterized in that, One end of the piston (322) close to the hydrogen channel (11) is conical, and the piston (322) provides a line seal for the end of the hydrogen channel (11).

9. The hydrogen cylinder combined valve according to claim 1, characterized in that, The hydrogen cylinder combined valve further includes a hydrogenation joint (51), the hydrogenation joint (51) is connected to the main body (10), and the hydrogenation joint (51) communicates with the hydrogen channel (11) to supply hydrogen to the hydrogen cylinder.

10. The hydrogen cylinder combined valve according to claim 1, characterized in that, The hydrogen cylinder combined valve further includes a hydrogen supply joint (52), the hydrogen supply joint (52) is connected to the main body (10), and the hydrogen supply joint (52) communicates with the hydrogen channel (11) to output the hydrogen of the hydrogen cylinder.

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