阅读说明：本技术 一种气瓶高温泄压系统及氢能汽车 (Gas cylinder high temperature pressure release system and hydrogen energy car ) 是由 薛东彪 郝义国 蔡腾飞 汪江 于 2021-06-09 设计创作，主要内容包括：本发明提供一种气瓶高温泄压系统及氢能汽车,气瓶高温泄压系统包括气瓶、温度泄压装置和热熔丝；气瓶头部安装有瓶阀,瓶阀上设有温度泄压装置,温度泄压装置上缠绕有电阻丝；加热装置用于对电阻丝进行加热；热熔丝一端与加热装置相连,另一端与气瓶尾部相连,热熔丝处于预紧状态时,加热装置处于不工作状态,热熔丝处于断裂状态时,加热装置对电阻丝加热以使温度泄压装置被加热到激活温度。本发明提出的技术方案的有益效果是：对于长度较长的气瓶,当火灾发生在气瓶远离温度泄压装置的一端或气瓶中部时,气瓶受到高温后,通过热熔丝的断裂,使得加热装置对电阻丝进行加热,使温度泄压装置及时达到激活温度,从而及时响应尽早排出气瓶内的氢气。(The invention provides a gas cylinder high-temperature pressure relief system and a hydrogen energy automobile, wherein the gas cylinder high-temperature pressure relief system comprises a gas cylinder, a temperature pressure relief device and a thermal fuse; a cylinder valve is arranged at the head of the gas cylinder, a temperature pressure relief device is arranged on the cylinder valve, and a resistance wire is wound on the temperature pressure relief device; the heating device is used for heating the resistance wire; one end of the thermal fuse is connected with the heating device, the other end of the thermal fuse is connected with the tail of the gas cylinder, when the thermal fuse is in a pre-tightening state, the heating device is in an out-of-work state, and when the thermal fuse is in a fracture state, the heating device heats the resistance wire to enable the temperature pressure relief device to be heated to an activation temperature. The technical scheme provided by the invention has the beneficial effects that: to the longer gas cylinder of length, when the conflagration took place to keep away from temperature pressure relief device's one end or gas cylinder middle part at the gas cylinder, the gas cylinder received the high temperature back, through the fracture of hot melt silk for heating device heats the resistance wire, makes temperature pressure relief device in time reach the activation temperature, thereby in time responds the hydrogen in the gas cylinder of discharging as early as possible.)

1. A gas cylinder high temperature pressure relief system, comprising:

the head of the gas cylinder is provided with a cylinder valve, the cylinder valve is provided with a temperature pressure relief device, and a resistance wire is wound on the temperature pressure relief device;

the heating device is used for heating the resistance wire;

one end of the thermal fuse is connected with the heating device, the other end of the thermal fuse is connected with the tail of the gas cylinder, when the thermal fuse is in a pre-tightening state, the heating device is in an out-of-operation state, and when the thermal fuse is in a breaking state, the heating device heats the resistance wire so that the temperature pressure relief device is heated to an activation temperature.

2. The high-temperature pressure relief system for the gas cylinder as claimed in claim 1, wherein the heating device comprises a hollow shell, a current lead, a rotary central shaft, a spiral spring and an annular permanent magnet;

two through holes are arranged on the shell in a penetrating manner, the current lead is positioned in the shell, and two ends of the current lead respectively penetrate out of the through holes to be connected with two ends of the resistance wire to form a closed circuit;

but rotatory axis axial rotation install in the casing, one end is worn out the casing with the hot melt silk fixed connection, but annular permanent magnet axial rotation install in the casing, and be located rotatory axis periphery, the electric current wire is located annular permanent magnet both sides, rotatory axis with be connected with between the annular permanent magnet coil spring, when the hot melt silk is in pretension state, coil spring is in pretension state and stores elastic potential energy.

3. The gas cylinder high-temperature pressure relief system according to claim 2, further comprising a spring fixing seat, wherein the spring fixing seat is located in the casing, the lower end of the spring fixing seat is fixedly connected with the bottom of the casing, a first mounting hole is formed in the middle of the spring fixing seat in a penetrating manner, the rotating center shaft is axially and rotatably mounted in the first mounting hole, and the inner end of the spiral spring is fixedly connected with the spring fixing seat.

4. The high-temperature pressure relief system for the gas cylinder as claimed in claim 2, further comprising a rotary tray, wherein the rotary tray comprises a tray body and a protruding portion protruding downwards from the circumference of the tray body, a second mounting hole is formed in the middle of the tray body in a penetrating manner, the rotary center shaft is fixedly mounted in the second mounting hole, the inner side wall of the protruding portion is opposite to and fixedly connected with the outer end of the spiral spring, and the annular permanent magnet is fixedly connected with the outer side wall of the rotary tray.

5. A gas cylinder high temperature pressure relief system according to claim 4, wherein said protrusion is annularly disposed around said coil spring.

6. The gas cylinder high-temperature pressure relief system according to claim 2, further comprising a pre-tightening rotary disc, wherein the pre-tightening rotary disc is fixedly mounted at the upper end of the rotating center shaft and is fixedly connected with the thermal fuse.

7. The high temperature pressure relief system for gas cylinders of claim 1, wherein said thermal fuse is externally covered with a protective layer.

8. A gas cylinder high temperature pressure relief system according to claim 7, wherein said protective layer is a heat conductive material or a metal tube.

9. A hydrogen-powered vehicle comprising a cylinder high temperature pressure relief system according to any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of hydrogen energy automobiles, in particular to a high-temperature pressure relief system for a gas cylinder and a hydrogen energy automobile.

Background

For a hydrogen fuel cell vehicle, since the fuel is high-pressure hydrogen, in order to prevent the risk of explosion of a hydrogen cylinder caused by fire, a Temperature Pressure Relief Device (TPRD) is often installed on a cylinder valve to timely discharge the hydrogen in the hydrogen cylinder. The action process of the temperature pressure relief device is as follows: when the temperature pressure relief device is subjected to a certain temperature (usually 110 ℃, which is called as activation temperature), the glass bubble inside the temperature pressure relief device can be broken, so that the high-pressure hydrogen inside the hydrogen bottle is released into the atmosphere. However, for a gas cylinder with a long length, because the temperature pressure relief device is only installed at one end of the cylinder valve, when a fire disaster occurs at the other end of the gas cylinder or the middle part of the gas cylinder, the temperature pressure relief device cannot reach the activation temperature in time, so that hydrogen in the gas cylinder cannot be discharged as early as possible, and the risk of gas cylinder explosion may be caused.

Disclosure of Invention

In view of the above, embodiments of the present invention provide a high temperature pressure relief system for a gas cylinder and a hydrogen vehicle.

The embodiment of the invention provides a high-temperature pressure relief system for a gas cylinder, which comprises:

the head of the gas cylinder is provided with a cylinder valve, the cylinder valve is provided with a temperature pressure relief device, and a resistance wire is wound on the temperature pressure relief device;

the heating device is used for heating the resistance wire;

one end of the thermal fuse is connected with the heating device, the other end of the thermal fuse is connected with the tail of the gas cylinder, when the thermal fuse is in a pre-tightening state, the heating device is in an out-of-operation state, and when the thermal fuse is in a breaking state, the heating device heats the resistance wire so that the temperature pressure relief device is heated to an activation temperature.

Furthermore, the heating device comprises a hollow shell, a current lead, a rotating middle shaft, a spiral spring and an annular permanent magnet;

two through holes are arranged on the shell in a penetrating manner, the current lead is positioned in the shell, and two ends of the current lead respectively penetrate out of the through holes to be connected with two ends of the resistance wire to form a closed circuit;

but rotatory axis axial rotation install in the casing, one end is worn out the casing with the hot melt silk fixed connection, but annular permanent magnet axial rotation install in the casing, and be located rotatory axis periphery, the electric current wire is located annular permanent magnet both sides, rotatory axis with be connected with between the annular permanent magnet coil spring, when the hot melt silk is in pretension state, coil spring is in pretension state and stores elastic potential energy.

The spring fixing seat is positioned in the shell, the lower end of the spring fixing seat is fixedly connected with the bottom of the shell, a first mounting hole penetrates through the middle of the spring fixing seat, the rotating middle shaft can be axially and rotatably mounted in the first mounting hole, and the inner end of the spiral spring is fixedly connected with the spring fixing seat.

Furthermore, the rotary tray comprises a tray body and a protruding portion formed by protruding downwards in the circumferential direction of the tray body, a second mounting hole penetrates through the middle of the tray body, the rotary middle shaft is fixedly mounted in the second mounting hole, the inner side wall of the protruding portion is opposite to and fixedly connected with the outer end of the spiral spring, and the annular permanent magnet is fixedly connected with the outer side wall of the rotary tray.

Further, the protruding portion is annularly arranged and located on the periphery of the spiral spring.

Furthermore, the hot melt welding device further comprises a pre-tightening turntable, wherein the pre-tightening turntable is fixedly arranged at the upper end of the rotating middle shaft and is fixedly connected with the hot melt wire.

Further, the thermal fuse is covered with a protective layer.

Further, the protective layer is a heat conducting material or a metal tube.

The embodiment of the invention also provides a hydrogen energy automobile which comprises the gas cylinder high-temperature pressure relief system.

The technical scheme provided by the embodiment of the invention has the following beneficial effects: to the longer gas cylinder of length, when the conflagration took place to keep away from temperature pressure relief device's one end or gas cylinder middle part at the gas cylinder, the gas cylinder received the high temperature back, through the fracture of hot melt silk for heating device heats the resistance wire, makes temperature pressure relief device in time reach the activation temperature, thereby in time responds the hydrogen in the gas cylinder of discharging as early as possible.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of a high-temperature pressure relief system for a gas cylinder according to the present invention;

FIG. 2 is a cross-sectional view of the high temperature pressure relief system of the gas cylinder of FIG. 1;

FIG. 3 is a schematic view of the heating apparatus of FIG. 1;

FIG. 4 is a schematic view of a partial structure of the heating apparatus of FIG. 3;

FIG. 5 is a schematic view showing the structure of the ring permanent magnet of FIG. 3.

In the figure: the device comprises a gas cylinder 1, a cylinder valve 2, a temperature pressure relief device 3, a heating device 4, a pre-tightening turntable 41, a shell 42, a through hole 42a, a cutting lead 43, an annular permanent magnet 44, a rotary tray 45, a tray body 45a, a protruding part 45b, a spiral spring 46, a spring fixing seat 47, a rotary middle shaft 48, a current lead 5, a resistance wire 6 and a thermal fuse 7.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.

The invention provides a hydrogen energy automobile comprising a gas cylinder high-temperature pressure relief system, wherein the invention is characterized in that the gas cylinder high-temperature pressure relief system is used. Referring to fig. 1 to 5, an embodiment of the invention provides a gas cylinder high-temperature pressure relief system and a hydrogen energy vehicle, including a gas cylinder 1, a heating device 4 and a thermal fuse 7.

The head of the gas cylinder 1 is provided with a cylinder valve 2, the cylinder valve 2 is provided with a temperature pressure relief device 3, the temperature pressure relief device 3 is wound with a plurality of circles of resistance wires 6, and a heating device 4 is used for heating the resistance wires 6.

One end of the thermal fuse 7 is connected with the heating device 4, the other end of the thermal fuse 7 is connected with the tail of the gas cylinder 1, when the thermal fuse 7 is in a pre-tightening state, the heating device 4 is in an out-of-operation state, and when the thermal fuse 7 is in a breaking state, the heating device 4 heats the resistance wire 6 so that the temperature pressure relief device 3 is heated to an activation temperature. The thermal fuse 7 can be one or more, and extend along the body direction of the gas cylinder 1, in order to prevent the thermal fuse 7 from being damaged by a physical mode, a protective layer covers the thermal fuse 7, and specifically, the protective layer is a heat conduction material or a metal pipe.

In other embodiments, the thermal fuse 7 may be connected to a switch of the heating device 4, and when the thermal fuse 7 is in the pre-tightening state, the switch of the heating device 4 is turned off, so that the circuit in the heating device 4 is in the off state, and the heating device 4 does not operate; the thermal fuse 7 is in a broken state, the switch of the heating device 4 is closed, so that the circuit in the heating device 4 is in a closed state, and the heating device 4 heats the resistance wire 6.

In this embodiment, the heating device 4 includes a hollow casing 42, a current conducting wire 5, a rotation central shaft 48, a coil spring 46 and a ring permanent magnet 44. Two through holes 42a are arranged on the shell 42 in a penetrating manner, the current lead 5 is positioned in the shell 42, and two ends of the current lead respectively penetrate out of the through holes 42a to be connected with two ends of the resistance wire 6 to form a closed circuit.

The rotary middle shaft 48 can be axially and rotatably arranged in the shell 42, one end of the rotary middle shaft penetrates out of the shell 42 and is fixedly connected with the thermal fuse 7, a revolute pair exists between the rotary middle shaft 48 and the shell 42, the annular permanent magnet 44 can be axially and rotatably arranged in the shell 42 and is positioned on the periphery of the rotary middle shaft 48, the current leads 5 are positioned on two sides of the annular permanent magnet 44, the current leads 5 can be arranged in a dispersed manner, but terminals led out from the same side of the current leads 5 are mutually connected.

The spiral spring 46 is connected between the rotating middle shaft 48 and the annular permanent magnet 44, and when the thermal fuse 7 is in a pre-tightening state, the spiral spring 46 is in a pre-tightening state to store elastic potential energy. After the thermal fuse 7 is broken, the spiral spring 46 releases elastic potential energy to drive the annular permanent magnet 44 to rotate, the cutting current lead 5 generates induction current, the induction current heats the resistance wire 6 wound on the temperature pressure relief device 3, and when the temperature pressure relief device 3 is heated to an activation temperature, gas in the gas cylinder 1 can be released, so that the purpose of timely response is achieved.

Specifically, in order to facilitate the installation of the coil spring 46 and the annular permanent magnet 44, a spring fixing seat 47 and a rotating tray 45 are further included.

The spring fixing seat 47 is located in the casing 42, the lower end of the spring fixing seat is fixedly connected with the bottom of the casing 42, a first mounting hole penetrates through the middle of the spring fixing seat 47, the extending direction of the first mounting hole is the same as the extending direction of the rotating center shaft 48, the rotating center shaft 48 can be axially and rotatably mounted in the first mounting hole, a rotating pair is arranged between the rotating center shaft 48 and the spring fixing seat 47, and the inner end of the spiral spring 46 is fixedly connected with the spring fixing seat 47. In this embodiment, the coil spring 46 and the spring fixing seat 47 are fixedly connected at a position B.

In other embodiments, the bottom wall of the housing 42 may be upwardly protruded to form an annular protrusion, and the annular permanent magnet 44 is mounted to the annular protrusion through a bearing. In this embodiment, the rotating tray 45 includes a tray body 45a and a protruding portion 45b protruding downward from the tray body 45a, a second mounting hole penetrates through the middle of the tray body 45a, the extending direction of the second mounting hole is the same as the extending direction of the rotating center shaft 48, the rotating center shaft 48 is fixedly mounted in the second mounting hole, the inner side wall of the protruding portion 45b is opposite to and fixedly connected with the outer end of the coil spring 46, the annular permanent magnet 44 is fixedly connected with the outer side wall of the rotating tray 45, the annular permanent magnet 44 can be axially rotatably mounted in the housing 42 through the rotating tray 45 and the rotating center shaft 48, and a space can be reserved for the current lead 5.

Specifically, protruding portion 45b is the annular setting, is located coil spring 46 periphery, and coil spring 46 and rotatory tray 45 are in A department solid antithetical couplet, strengthen the intensity of being connected between coil spring 46 and rotatory tray 45, rotatory tray 45 and the annular permanent magnet 44, can improve coil spring 46 and drive annular permanent magnet 44 pivoted stability.

In order to facilitate the rotation of the rotation central shaft 48, the thermal fuse device further comprises a pre-tightening rotary disc 41, wherein the pre-tightening rotary disc 41 is fixedly installed at the upper end of the rotation central shaft 48, is located outside the shell 42, and is fixedly connected with the thermal fuse 7.

The rotary pre-tightening turntable 41 is fixedly connected with the upper end of a rotary middle shaft 48, the rotary middle shaft 48 is fixedly installed in a second installation hole of the rotary tray 45, the annular permanent magnet 44 is fixedly installed on the outer side wall of the rotary tray 45, the outer end of the spiral spring 46 is fixedly connected with the rotary tray 45, the pre-tightening turntable 41 drives the rotary middle shaft 48, the rotary tray 45, the annular permanent magnet 44 and the spiral spring 46 to rotate, the spiral spring 46 is pre-tightened, and after the spiral spring 46 reaches a certain pre-tightening force, the pre-tightening turntable 41 is connected with the tail of the gas cylinder 1 by using the thermal fuse 7 and is kept in a pre-tightening state, so that the spiral spring 46 stores elastic potential energy. When a fire disaster happens near the gas cylinder 1, the thermal fuse 7 arranged around the gas cylinder 1 can be fused by high temperature, the elastic potential energy stored by the spiral spring 46 is released to drive the rotary tray 45 and the annular permanent magnet 44 to rotate, the cutting wire 43 generates induced current, the induced current heats the resistance wire 6 wound on the temperature pressure relief device 3, when the temperature pressure relief device 3 is heated to the activation temperature, the gas in the gas cylinder 1 can be released, and the purposes of timely response and no power consumption are achieved.

According to the technical scheme provided by the invention, for a gas cylinder 1 with a longer length, when a fire disaster happens to one end of the gas cylinder 1 far away from the temperature pressure relief device 3 or the middle part of the gas cylinder 1, after the gas cylinder 1 is subjected to high temperature, the spiral spring 46 can rapidly release potential energy to enable the heating device 4 to heat the resistance wire 6 through the fracture of the thermal fuse 7, so that the temperature pressure relief device 3 can reach the activation temperature in time, and the hydrogen in the gas cylinder 1 can be discharged as early as possible in time in response.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

The features of the embodiments and embodiments described herein above may be combined with each other without conflict.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.