Leakage detection device for alcohol hydrogen filling station

Abstract

The utility model relates to the technical field of alcohol hydrogen leakage detection of a filling station, in particular to a leakage detection device of an alcohol hydrogen filling station. The alcohol hydrogen filling station leakage detection device comprises a hydrogen storage tank, the hydrogen storage tank is provided with a butt joint pipe used for the hydrogen storage tank to store or discharge alcohol hydrogen, and the top of the hydrogen storage tank is fixedly provided with a protective cover used for covering the butt joint pipe; a detection cylinder is installed on the top of the protective cover, and a monitoring assembly is arranged in the detection cylinder. According to the leakage detection device for the alcohol hydrogen filling station, the monitoring assembly is combined with the piston driven by air pressure and the contact piece type switch, the audible and visual alarm is triggered through the abutting column, the sensitivity is high, the anti-interference capacity is high, meanwhile, the spring and the limiting ring act synergistically, it is ensured that the piston is reset in the non-leakage state, and the leakage detection efficiency is improved. Meanwhile, the pressure relief hole can balance the internal pressure of the detection cylinder, the stability of the system is improved, leaked alcohol hydrogen fuel can be directionally conveyed to a standby storage tank through the design of the dump pipe and the control valve, and fuel diffusion and secondary pollution are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of alcohol hydrogen leak detection of filling station, especially to a kind of alcohol hydrogen filling station leak detection device. BACKGROUND

[0002] With the rapid development of hydrogen energy technology, alcohol hydrogen filling station as the key facility of hydrogen fuel supply, its safety is widely concerned, alcohol hydrogen fuel has high volatility and flammable and explosive characteristics, once leakage, it is easy to cause safety accident, and in the prior art, alcohol hydrogen leak detection is mostly fixed sensor or mechanical alarm device, but there are the following problems:

[0003] 1, sensor is susceptible to environmental interference, leading to false alarm or miss;

[0004] 2, traditional mechanical structure is complex, maintenance cost is high and response speed is slow;

[0005] 3, leaked fuel is difficult to recover in time, there is secondary leakage risk.

[0006] In addition, the integration of detection unit and hydrogen storage tank in the existing device is low, and the leakage point cannot be quickly located and emergency measures cannot be taken.

[0007] Therefore, it is necessary to provide a new alcohol hydrogen filling station leak detection device to solve the above technical problems. CONTENT OF UTILITY MODEL

[0008] To solve the above technical problems, the utility model provides a kind of alcohol hydrogen filling station leak detection device.

[0009] The alcohol hydrogen filling station leak detection device provided by the utility model includes a hydrogen storage tank, a docking pipe for storing or discharging alcohol hydrogen from the hydrogen storage tank is installed on the hydrogen storage tank, and a protective cover for covering the docking pipe is fixedly installed on the top of the hydrogen storage tank.

[0010] A detachable detection cylinder is installed on the top of the protective cover, and a monitoring assembly is provided in the detection cylinder, the monitoring assembly includes an audible and visual alarm, the audible and visual alarm is fixedly installed on the top of the detection cylinder, and a touch switch electrically connected to the audible and visual alarm is fixedly installed on the inner top wall of the detection cylinder, a slidingly connected piston is installed in the detection cylinder, and a contact column for opening and closing the touch switch is fixedly installed on the piston.

[0011] A transfer pipe for discharging leaked alcohol hydrogen fuel is installed on the detection cylinder, and a control valve is installed at the connection end of the transfer pipe and the detection cylinder.

[0012] Preferably, the monitoring assembly further includes a spring, one end of the spring is fixedly connected to the inner top wall of the detection cylinder, and the other end of the spring is fixedly connected to the upper surface of the piston.

[0013] Preferably, a limiting ring is fixedly installed in the detection cylinder, and the piston is limited from sliding downward by the limiting ring.

[0014] Preferably, a pressure relief hole is formed in the detection cylinder, and the pressure relief hole is located below the limiting ring.

[0015] Preferably, a connecting end of the dump pipe is fixedly connected with the pressure relief hole.

[0016] Preferably, a threaded through hole is formed in the top of the protective cover, a threaded part is arranged on the outer cylinder wall of the detection cylinder close to the cylinder port, and the threaded part is fixedly connected with the threaded through hole in a threaded mode.

[0017] Preferably, an L-shaped guide pipe is fixedly welded on the protective cover, and the flange of the connecting end of the L-shaped guide pipe is fixedly connected with the flange of the connecting end of the butt joint pipe through bolts.

[0018] Compared with the related art, the alcohol hydrogen refueling station leakage detection device has the following advantages

[0019] Beneficial effects:

[0020] The monitoring assembly provided by the utility model is combined with the piston driven by air pressure and the touch switch, the sound and light alarm is triggered through the abutting column, the sensitivity is high and the anti-interference capability is strong, at the same time, the spring and the limiting ring cooperate to ensure that the piston is reset in the non-leakage state, meanwhile, the pressure relief hole can balance the internal pressure of the detection cylinder, the system stability is improved, and the design of the dump pipe and the control valve can direct the leaked alcohol hydrogen fuel to the standby storage tank, so that fuel diffusion and secondary pollution are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Fig. 1 is a structural schematic view of a preferred embodiment of the alcohol hydrogen refueling station leakage detection device provided by the utility model;

[0022] Figure 2 Fig. 2 is a sectional structural schematic view of the protective cover shown in Fig. 1; Figure 1 Fig. 3 is a sectional structural schematic view of the detection cylinder shown in Fig. 1.

[0023] Figure 3 Fig. 4 is a sectional structural schematic view of the monitoring assembly shown in Fig. 1. Figure 1

[0024] Fig. 1 is a structural schematic view of a preferred embodiment of the alcohol hydrogen refueling station leakage detection device provided by the utility model; Fig. 2 is a sectional structural schematic view of the protective cover shown in Fig. 1; Fig. 3 is a sectional structural schematic view of the detection cylinder shown in Fig. 1; Fig. 4 is a sectional structural schematic view of the monitoring assembly shown in Fig. 1; and Fig. 5 is a structural schematic view of the dump pipe and the control valve shown in Fig. 1. DETAILED DESCRIPTION ​

[0025] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0026] The specific implementation of the utility model will be described in detail below in combination with specific examples.

[0027] Please refer to Figures 1 to 3 , the alcohol hydrogen filling station leakage detection device provided by the utility model embodiment, the alcohol hydrogen filling station leakage detection device includes a hydrogen storage tank 1, a detection cylinder 3 and a monitoring assembly 4.

[0028] In the embodiment of the utility model, please refer to Figure 1 and Figure 2 , the hydrogen storage tank 1 is provided with a butt joint pipe 11 for storing or discharging alcohol hydrogen, and the top of the hydrogen storage tank 1 is fixedly provided with a protective cover 2 for covering the butt joint pipe 11, and the protective cover 2 is fixedly welded with an L-shaped pipe 21, and the flange of the connecting end of the L-shaped pipe 21 is fixedly connected with the flange of the connecting end of the butt joint pipe 11 through bolts, and the other end of the L-shaped pipe 21 is connected with the conveying pipeline of the filling station, and the protective cover 2 can effectively prevent the alcohol hydrogen fuel from diffusing into the surrounding air after leaking from the discharge port of the hydrogen storage tank 1.

[0029] In the embodiment of the utility model, please refer to Figure 1 , Figure 2 and Figure 3 , the top of the protective cover 2 is provided with a detachably connected detection cylinder 3, the detection cylinder 3 is provided with a monitoring assembly 4, the monitoring assembly 4 includes a sound-light alarm 41, the sound-light alarm 41 is fixedly installed on the top of the detection cylinder 3, and the inner top wall of the detection cylinder 3 is fixedly provided with a touch switch 42 electrically connected with the sound-light alarm 41, a slidingly connected piston 43 is installed in the detection cylinder 3, the piston 43 is fixedly provided with a resisting column 44 for opening and closing the touch switch 42, and the monitoring assembly 4 further includes a spring 45, one end of the spring 45 is fixedly connected with the inner top wall of the detection cylinder 3, and the other end of the spring 45 is fixedly connected with the upper surface of the piston 43, a limiting ring 32 is fixedly installed in the detection cylinder 3, and the piston 43 is limited to slide downward through the limiting ring 32.

[0030] The detection cylinder 3 is provided with a transfer pipe 5 for discharging the leaked alcohol hydrogen fuel, and the connecting end of the transfer pipe 5 is provided with a control valve 51, and the detection cylinder 3 is provided with a pressure relief hole 3a, and the pressure relief hole 3a is located below the limiting ring 32, and the connecting end of the transfer pipe 5 is fixedly connected with the pressure relief hole 3a.

[0031] Need to explain is: the other end of the dump pipe 5 is connected with a spare storage tank, and the control valve 51 is in the closed state, when the L-shaped conduit 21 and the docking pipe 11 are docked with fuel leakage, when the pressure in the detection cylinder 3 increases, at this time the piston 43 slides along the detection cylinder 3 under the pressure of hydrogen and compresses the spring 45, until the abutting column 44 abuts the touch switch 42, the sound and light alarm 41 operates, that is, the warning signal is sent and the staff is reminded, then the staff opens the control valve 51, so that the leaked fuel is discharged to the spare storage tank by the dump pipe 5.

[0032] Further, the top of the protective cover 2 is provided with a threaded hole 2a, and the outer cylinder wall of the detection cylinder 3 close to the cylinder port is provided with a threaded part 31, and the threaded part 31 is in threaded connection with the threaded hole 2a, so that the detection cylinder 3 is convenient to install and disassemble, and the staff can easily overhaul and maintain the elements in the detection cylinder 3.

[0033] In the present application, the monitoring assembly 4 combines the piston 43 driven by the gas pressure and the touch switch 42, triggers the sound and light alarm 41 through the abutting column 44, has high sensitivity and strong anti-interference ability, at the same time, the spring 45 and the limiting ring 32 cooperate to ensure that the piston 43 resets in a non-leakage state, and the pressure relief hole 3a can balance the internal pressure of the detection cylinder 3, improve the system stability, and the design of the dump pipe 5 and the control valve 51 can direct the leaked alcohol hydrogen fuel to the spare storage tank, avoid fuel diffusion and secondary pollution.

[0034] The circuit and the control involved in the present application are prior art, and will not be described in detail here.

[0035] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process conversion using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. An alcohol hydrogen filling station leakage detection device, comprising a hydrogen storage tank (1), a docking pipe (11) for storing or discharging alcohol hydrogen of the hydrogen storage tank (1) is installed on the hydrogen storage tank (1), and a protective cover (2) for covering the docking pipe (11) is fixedly installed on the top of the hydrogen storage tank (1), characterized in that: a detachable detection cylinder (3) is installed on the top of the protective cover (2), and a monitoring assembly (4) is arranged in the detection cylinder (3), the monitoring assembly (4) comprises an audible and visual alarm (41) fixedly installed on the top of the detection cylinder (3), and a touch switch (42) electrically connected with the audible and visual alarm (41) is fixedly installed on the inner top wall of the detection cylinder (3), a slidingly connected piston (43) is installed in the detection cylinder (3), and a butt column (44) for opening and closing the touch switch (42) is fixedly installed on the piston (43). A drain pipe (5) for discharging leaked alcohol hydrogen fuel is installed on the detection cylinder (3), and a control valve (51) is installed at the connecting end of the drain pipe (5) and the detection cylinder (3).

2. The alcohol hydrogen refueling station leak detection apparatus of claim 1, wherein, The monitoring assembly (4) further comprises a spring (45), one end of the spring (45) is fixedly connected with the inner top wall of the detection cylinder (3), and the other end of the spring (45) is fixedly connected with the upper surface of the piston (43).

3. The alcohol hydrogen refueling station leak detection apparatus of claim 1, wherein, A limiting ring (32) is fixedly installed in the detection cylinder (3), and the piston (43) is limited to slide downward by the limiting ring (32).

4. The alcohol hydrogen refueling station leak detection apparatus of claim 3, wherein, A pressure relief hole (3a) is formed in the detection cylinder (3), and the pressure relief hole (3a) is located below the limiting ring (32).

5. The alcohol hydrogen refueling station leak detection apparatus of claim 4, wherein, The connecting end of the drain pipe (5) is fixedly connected with the pressure relief hole (3a).

6. The alcohol hydrogen refueling station leak detection apparatus of claim 1, wherein, A threaded through hole (2a) is formed in the top of the protective cover (2), a threaded portion (31) is arranged on the outer cylinder wall of the detection cylinder (3) close to the cylinder port, and the threaded portion (31) is fixedly connected with the threaded through hole (2a) in a threaded manner.

7. The alcohol hydrogen refueling station leak detection apparatus of claim 1, wherein, An L-shaped guide pipe (21) is fixedly welded on the protective cover (2), and the flange of the connecting end of the L-shaped guide pipe (21) is fixedly connected with the flange of the connecting end of the docking pipe (11) by bolts.

Images