CN214008829U

CN214008829U - Cylinder valve for gas cylinder and gas cylinder

Info

Publication number: CN214008829U
Application number: CN202022806763.9U
Authority: CN
Inventors: 不公告发明人
Original assignee: Weishi Energy Technology Co Ltd
Current assignee: Weishi Energy Technology Co Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-08-20
Anticipated expiration: 2030-11-26

Abstract

The utility model discloses a cylinder valve and gas cylinder for gas cylinder, wherein the cylinder valve that is used for the gas cylinder includes: a cylinder valve body and an overflow valve. The cylinder valve body is internally provided with an air supply channel and an installation space; the excessive flow valve is installed in the installation space in a matching manner, and the excessive flow valve comprises: the elastic reset piece is arranged on the valve, and the valve is suitable for opening or blocking the air supply channel. The integral volume of the cylinder valve is smaller, the cylinder valve is more convenient to arrange, the arrangement space can be effectively saved, the integral layout of a hydrogen storage system is facilitated, and the safety of the cylinder valve is better.

Description

Cylinder valve for gas cylinder and gas cylinder

Technical Field

The utility model relates to a general machinery technical field particularly, relates to a cylinder valve and gas cylinder for gas cylinder.

Background

The flow passing valve on the cylinder valve of the traditional high-pressure gas cylinder is arranged outside the cylinder valve body, namely, the flow passing valve is arranged independently, and the space required by the flow passing valve is required to be additionally arranged independently, so that the whole volume of the cylinder valve is large, the structure is complex, the whole layout of a hydrogen storage system is not facilitated, and the improvement space exists.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a cylinder valve for a gas cylinder, which has a smaller overall size, is more convenient to arrange, and can effectively save the arrangement space, so as to facilitate the overall layout of a hydrogen storage system.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a cylinder valve for a gas cylinder, comprising: the cylinder valve body is internally provided with an air supply channel and an installation space; the excess flow valve is installed in the installation space in a matching mode and comprises: the elastic reset piece is arranged on the valve, and the valve is suitable for opening or blocking the air supply channel.

Further, the installation space is formed on at least a section of the air supply passage.

Further, the installation space includes: first section and second section, first section with the downstream section of air feed channel is linked together, the second section with the upstream section of air feed channel communicates, the excess flow valve is suitable for the shutoff or opens the port of first section, elasticity reset piece be suitable for to the excess flow valve provides keeps away from the power of downstream section.

Furthermore, the cooperation of the first end of excess flow valve is in order to shutoff or open in the first section the port of first section, the second end setting of excess flow valve is in the second section, elasticity reset piece is spacing second section with between the excess flow valve.

Further, an air passing channel is formed on the valve of the over-flow valve.

Further, the air inlet of the air passage is arranged on the second end, and the air outlet of the air passage is arranged on the first end.

Further, the diameter of the first section is smaller than that of the second section so as to form a stopping step between the first section and the second section, a stopping flange is arranged on the second end, and the elastic resetting piece is limited between the stopping step and the stopping flange.

Further, the elastic restoring member includes: and the reset spring is sleeved on the valve of the overflowing valve.

Further, the cylinder valve further comprises: the second end of the filter screen is provided with a plurality of convex supporting bulges, and the filter screen is matched with the supporting bulges in a stop way so that the filter screen is spaced from the air outlet.

Compared with the prior art, the cylinder valve for the gas cylinder has the following advantages:

a cylinder valve for gas cylinder, this cylinder valve's whole volume is littleer, is more convenient for arrange, can effectively sparingly arrange the space to be favorable to the overall arrangement of hydrogen storage system, and the security of cylinder valve is better.

Another object of the present invention is to provide a gas cylinder, including the aforesaid cylinder valve for a gas cylinder, the whole volume of this gas cylinder is smaller, is more convenient to arrange, can effectively save the space of arranging to be favorable to storing up the overall arrangement of hydrogen system.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a cross-sectional view of a cylinder valve according to an embodiment of the present invention;

FIG. 2 is a partial structural cross-sectional view of a cylinder valve according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a flow-passing valve according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a flow-passing valve according to an embodiment of the present invention.

Description of reference numerals:

100-bottle valve, 1-bottle valve body, 11-gas supply channel, 12-installation space, 2-overflow valve, 21-overflow valve, 22-elastic reset piece, 121-first section, 122-second section, 111-downstream section, 112-upstream section, 211-first end, 212-second end, 213-gas passage, 214-gas inlet, 215-gas outlet, 123-stopping step, 216-stopping flange, 3-filter screen, 217-supporting protrusion.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

A cylinder valve 100 for a gas cylinder according to an embodiment of the present invention is described below with reference to fig. 1 to 4.

According to the utility model discloses a cylinder valve 100 for gas cylinder can include: a cylinder valve body 1 and a flow-passing valve 2.

As shown in fig. 1, the overflow valve 2 is a valve device driven by air pressure change, and is disposed on the cylinder valve body 11 to close or open the air supply channel 11, and can close the air supply channel 11 under the condition that the hydrogen supply pipeline (the pipeline connected between the cylinder valve 100 and the fuel cell) is broken to cut off the hydrogen supply under the premise of ensuring the normal use of the cylinder valve 100, thereby preventing a large amount of hydrogen from leaking, avoiding the occurrence of danger, and further ensuring the safety of the whole gas cylinder.

Because the flow-passing valve on the cylinder valve of the traditional high-pressure gas cylinder is arranged outside the cylinder valve body, namely the flow-passing valve is arranged independently, and the space required for independently installing the flow-passing valve needs to be increased, the whole volume of the cylinder valve is larger, the structure is more complicated, and the whole layout of a hydrogen storage system is not facilitated.

Therefore, the embodiment of the present invention integrates the flow passing valve 2 inside the cylinder valve body 1, so that the overall volume of the cylinder valve 100 is smaller and the structure is simpler. Namely, the cylinder valve body 1 is internally provided with the air supply channel 11 and the installation space 12, and the overflowing valve 2 is installed in the installation space 12 in a matching way, so that the whole volume of the cylinder valve 100 is reduced, the arrangement of the cylinder valve 100 is more convenient, the structure of the cylinder valve 100 is simplified, and the production and manufacturing cost is reduced.

Further, the excess flow valve 2 includes: an excess flow valve shutter 21 and an elastic restoring member 22, wherein the elastic restoring member 22 is disposed on the excess flow valve shutter 21 to be adapted to provide an elastic restoring force to the excess flow valve shutter 21 so that the excess flow valve shutter 21 can stably open or close the gas supply passage 11.

Specifically, in a normal state, the excess flow valve 21 is opened, high-pressure gas in the gas cylinder flows into the downstream air supply line through the excess flow valve 2, when the downstream air supply line is broken, the gas flow flowing through the excess flow valve 2 is suddenly increased, the high-speed gas flow causes the pressure of the gas flow upstream of the excess flow valve 2 to be increased, and when the pressure of the gas flow is greater than the elastic reset force provided by the elastic reset piece 22, the excess flow valve 21 blocks the gas supply channel 11, so that more gas is prevented from flowing out of the cylinder valve 100. When the downstream air supply line returns to normal, the sum of the air pressure in the downstream air supply line and the elastic return force provided by the elastic return piece 22 is greater than the air flow pressure upstream of the excess flow valve 2, the excess flow valve 2 opens the air supply channel 11, and at this time, the cylinder valve 100 returns to normal.

Wherein, because the whole setting of excess flow valve 2 is in the inside of bottle valve body 1, the wall of installation space 12 has acted as the casing of excess flow valve 2, consequently, need not set up alone the excess flow valve casing to make excess flow valve 2 only include excess flow valve 21 and elasticity reset 22 two part structure, so that the overall structure of excess flow valve 2 is simpler, and then make the processing degree of difficulty of excess flow valve 2 and bottle valve 100 lower, manufacturing cost has been reduced by a wide margin, has improved production efficiency simultaneously.

According to the utility model discloses a cylinder valve 100 for gas cylinder, this cylinder valve 100's whole volume is littleer, is more convenient for arrange, can effectively save the arrangement space to be favorable to storing up the overall arrangement of hydrogen system, and cylinder valve 100's overall structure is simpler, can effectively reduce the processing degree of difficulty and manufacturing cost, can effectively improve production efficiency moreover.

As shown in fig. 1, an installation space 12 is formed on at least a section of the air supply passage 11. That is, the flow passing valve 2 is directly disposed on at least one section of the gas supply channel 11, so as to better block or open the gas supply channel 11, and an independent space is not required to be disposed in the cylinder valve body 1 to arrange the flow passing valve 2, so that the installation and arrangement of the flow passing valve 2 are more convenient, and the overall structure of the cylinder valve 100 is simpler and more compact, and the production and processing are more convenient.

In connection with the embodiment shown in fig. 1 and 2, the installation space 12 comprises: a first section 121 and a second section 122, wherein the first section 121 communicates with the downstream section 111 of the gas supply channel 11, and the second section 122 communicates with the upstream section 112 of the gas supply channel 11, the excess flow valve shutter 21 is adapted to close or open the port of the first section 121, and the elastic restoring member 22 is adapted to provide the excess flow valve shutter 21 with a force away from the downstream section 111.

That is, when the air supply pipeline is broken, the whole of the excess flow valve 21 is adapted to move towards the downstream section 111 under the action of the air flow pressure of the upstream section 112, and finally blocks the port at the joint of the first section 121 and the downstream section 111, so as to block the air supply channel 11, so as to prevent the air in the air cylinder from being discharged out of the air cylinder from the air supply channel 11, and when the air supply pipeline is restored to be normal, the whole of the excess flow valve 21 moves towards the direction far away from the downstream section 111 under the action of the elastic restoring force provided by the elastic restoring piece 22, so as to open the port at the joint of the first section 121 and the downstream section 111, so that the air in the air cylinder can be conveyed to the external fuel cell through the air supply channel 11 again.

Further, referring to fig. 2, the first end 211 of the excess flow valve shutter 21 is fitted in the first section 121 to close or open the port of the first section 121, and the second end 212 of the excess flow valve shutter 21 is disposed in the second section 122, wherein the elastic restoring member 22 is limited between the second section 122 and the excess flow valve shutter 21, so as to prevent the elastic restoring member 22 from occupying the moving space of the first end 211, thereby ensuring that the first end 211 can better close the port of the first section 121, and improving the safety of the cylinder valve 100.

As shown in fig. 2 to 4, the excess flow valve shutter 21 is formed with an excess air passage 213. Under normal conditions, the gas in the downstream section 111 is adapted to flow into the downstream section 111 through the gas passing channel 213, thereby ensuring a normal passage of the gas supply channel 11 so that the gas cylinder can stably supply gas to the fuel cell.

Further, referring to fig. 3 and 4, the gas inlet 214 of the gas passage channel 213 opens at the second end 212, and the gas outlet 215 of the gas passage channel 213 opens at the first end 211, wherein the gas of the upstream section 112 is adapted to enter the gas passage channel 213 from the gas inlet 214 and flow out of the gas outlet 215, and then flow into the downstream section 111.

The air outlet 215 is located between the blocking surface of the first end 211 and the air inlet 214, and does not affect the normal blocking of the port of the first section 121 by the blocking surface.

Under normal conditions, because the gas pressure of the upstream section 112 is smaller than the elastic restoring force of the elastic restoring piece 22, the blocking surface cannot block the port of the first section 121, so that the gas can flow into the downstream section 111 from the gas outlet 215, and when the gas supply pipeline is broken, the pressure of the gas in the upstream section 112 on the excess flow valve 21 is increased instantaneously, so that the blocking surface blocks the port of the first section 121 instantaneously, and the gas cannot flow out of the gas outlet 215 and flow into the downstream section 111.

In connection with the embodiment shown in fig. 2 to 4, the diameter of the first section 121 is smaller than that of the second section 122 to form a stop step 123 between the first section 121 and the second section 122, and the second end 212 has a stop flange 216, wherein the elastic restoring member 22 is limited between the stop step 123 and the stop flange 216 to provide a stable elastic restoring force to the excess flow valve shutter 21, thereby ensuring the operation stability of the excess flow valve 2.

Moreover, the elastic reset piece 22 is directly matched with the cylinder valve body 1 in a butting way, so that the integral structure is more compact, the assembly is simpler, and the production efficiency is improved.

As a preferred embodiment, referring to fig. 1-4, the resilient return member 22 comprises: and the return spring is sleeved on the valve 21 of the overflow valve. From this, can provide more stable elasticity restoring force to excess flow valve 21 to make excess flow valve 21 can more stable operation, in order to avoid appearing the phenomenon of stuck, and reset spring occupies to arrange that the space is littleer, be more convenient for arrange, and the cost is lower, in order to reduce the manufacturing cost of bottle valve 100.

As shown in fig. 1-4, the cylinder valve 100 further includes: the filter screen 3 and the filter screen 3 can filter out particle impurities carried by gas in the gas cylinder so as to avoid blocking the overflow valve 2 and the cylinder valve 100 and avoid causing damage to the fuel cell. The second end 212 is formed with a plurality of convex supporting protrusions 217 (refer to fig. 3 and 4), and the filter screen 3 and the supporting protrusions 217 are in stop fit to separate the filter screen 3 from the air outlet 215, so that the filter area of the filter screen 3 is larger, the filtering amount in unit time is larger, the filtering efficiency is improved, and the flow rate of air passing through the flow passing valve 2 can be effectively improved.

A gas cylinder according to another aspect of the present invention includes the cylinder valve 100 for a gas cylinder described in the above embodiments. Other configurations for gas cylinders, etc., are known in the art and well known to those skilled in the art, and therefore, are not described in detail herein.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cylinder valve (100) for a gas cylinder, comprising:

the cylinder valve comprises a cylinder valve body (1), wherein an air supply channel (11) and an installation space (12) are arranged in the cylinder valve body (1);

an excess flow valve (2), the excess flow valve (2) being fittingly mounted within the mounting space (12), the excess flow valve (2) comprising: the valve device comprises a valve body (21) of the excess flow valve and an elastic resetting piece (22), wherein the elastic resetting piece (22) is arranged on the valve body (21) of the excess flow valve, and the valve body (21) of the excess flow valve is suitable for opening or blocking the air supply channel (11).

2. A cylinder valve (100) for a gas cylinder according to claim 1, characterized in that the installation space (12) is formed on at least a section of the gas supply channel (11).

3. A cylinder valve (100) for a gas cylinder according to claim 2, characterized in that the mounting space (12) comprises: first section (121) and second section (122), first section (121) with downstream section (111) of air feed passageway (11) are linked together, second section (122) with upstream section (112) of air feed passageway (11) are linked together, overflow valve (21) are suitable for the shutoff or open the port of first section (121), elasticity resets (22) and is suitable for to overflow valve (21) provide keep away from the power of downstream section (111).

4. A cylinder valve (100) for a gas cylinder according to claim 3, characterized in that a first end (211) of the excess flow valve shutter (21) is fitted inside the first section (121) to close or open the port of the first section (121), a second end (212) of the excess flow valve shutter (21) is arranged inside the second section (122), and the elastic return member (22) is trapped between the second section (122) and the excess flow valve shutter (21).

5. A cylinder valve (100) for a gas cylinder according to claim 4, characterized in that the excess flow valve (21) is formed with an excess gas passage (213).

6. A cylinder valve (100) for a gas cylinder according to claim 5, characterized in that the gas inlet (214) of the gas passage (213) opens onto the second end (212) and the gas outlet (215) of the gas passage (213) opens onto the first end (211).

7. The cylinder valve (100) for a gas cylinder according to claim 4, characterized in that the diameter of the first section (121) is smaller than the diameter of the second section (122) so as to form a stop step (123) between the first section (121) and the second section (122), the second end (212) having a stop flange (216) thereon, the elastic return member (22) being trapped between the stop step (123) and the stop flange (216).

8. A cylinder valve (100) for a gas cylinder according to claim 7, characterized in that said elastic return member (22) comprises: and the reset spring is sleeved on the valve (21) of the overflowing valve.

9. A cylinder valve (100) for a gas cylinder according to claim 6, characterized by further comprising: the filter screen (3), be formed with a plurality of evagination support protrusion (217) on the second end (212), filter screen (3) with support protrusion (217) backstop cooperation is so that filter screen (3) with air outlet (215) spaced apart.

10. A gas cylinder, characterized by comprising a cylinder valve (100) for a gas cylinder according to any one of claims 1-9.