CN217132489U

CN217132489U - Hydrogen leak detection system

Info

Publication number: CN217132489U
Application number: CN202220912374.0U
Authority: CN
Inventors: 姚昌晟
Original assignee: Hyde Hydrogen Energy Technology Jiangsu Co ltd
Current assignee: Hyde Hydrogen Energy Technology Jiangsu Co ltd
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-08-05
Anticipated expiration: 2032-04-14

Abstract

The application provides a hydrogen leakage detection system, is provided with hydrogen leak detector through on every section hydrogen transportation pipeline, gas-liquid separation equipment and hydrogen transportation pipeline junction, purification equipment and hydrogen transportation pipeline junction and hydrogen storage equipment and hydrogen transportation pipeline junction. Therefore, whether hydrogen leaks or not can be detected at each hydrogen-related node, and the safety in the hydrogen production-storage process can be improved. Furthermore, the hydrogen leakage detector comprises an acquisition module, a detection module, a signal processing module and a wireless connection module which are connected in sequence. Every hydrogen leak detector all can regard as an independent intellectual detection system node like this, and a plurality of hydrogen leak detectors can carry out hydrogen leak detection to a plurality of nodes of wading hydrogen simultaneously, and this has realized whether quick accurate monitoring has the leakage of hydrogen and the leakage position that corresponds, has embodied the intelligence of this system, still further improvement the security, also make things convenient for later maintenance.

Description

Hydrogen leak detection system

Technical Field

The invention relates to the technical field of hydrogen safety, in particular to a hydrogen leakage detection system.

Background

The impact of the energy crisis has gradually gone deep into various aspects of human life. The search for new energy is attracting researchers all over the world to invest in it. Hydrogen, fuel cell wind energy, solar energy, etc. are used as important energy development directions in the new century.

The hydrogen is clean and efficient, and is an important alternative energy source of the traditional fossil fuel, however, the application path of the hydrogen is not flat. Hydrogen is a colorless, tasteless, nontoxic, flammable and explosive gas, and can explode when the hydrogen content in the air reaches 4%, and the flame is transparent during combustion due to the colorless and tasteless hydrogen, so that the hydrogen is not easy to be found by sense organs and has great danger. Although hydrogen is nontoxic and physiologically inert to human bodies, if the content of hydrogen in air is increased, anoxic asphyxia is caused, and the hydrogen and the air can form an explosive mixture to cause combustion and explosion accidents. The hydrogen gas and air can be mixed to form an explosive mixture, and the explosive mixture can explode when meeting heat or open fire. Therefore, it is important to quickly and accurately monitor whether or not there is hydrogen leakage and the leakage position.

Disclosure of Invention

The invention aims to provide a hydrogen leakage detection system to solve the technical problem that the specific position with hydrogen leakage cannot be intelligently, quickly and accurately detected in the prior art.

To achieve the above object, the present application provides a hydrogen leak detection system including: the system comprises hydrogen production equipment, gas-liquid separation equipment, purification equipment, hydrogen storage equipment, a multi-section hydrogen conveying pipeline, a plurality of hydrogen leakage detectors and a controller; the hydrogen production equipment, the gas-liquid separation equipment, the purification equipment and the hydrogen storage equipment are sequentially connected through the hydrogen conveying pipeline; each section of the hydrogen conveying pipeline is provided with at least one hydrogen leakage detector, and the joints of the gas-liquid separation equipment and the hydrogen conveying pipeline, the joints of the purification equipment and the hydrogen conveying pipeline and the joints of the hydrogen storage equipment and the hydrogen conveying pipeline are provided with at least one hydrogen leakage detector; each hydrogen leakage detector comprises an acquisition module, a detection module, a signal processing module and a wireless connection module which are connected in sequence; the acquisition module is used for acquiring an air sample, the detection module is used for detecting the hydrogen concentration in the air sample, and the signal processing module is used for carrying out signal processing on the hydrogen concentration information in the air sample; the hydrogen leakage detector is connected with the controller through the wireless connection module and sends a signal processed by the signal processing module to the controller, and the controller judges whether hydrogen leakage exists according to the signal.

Optionally, in the hydrogen leakage detection system, the hydrogen leakage detector further includes a power supply module, and the power supply module supplies power to the hydrogen leakage detector.

Optionally, in the hydrogen leak detection system, the hydrogen leak detector is a hydrogen concentration sensor.

Optionally, in the hydrogen leakage detection system, the hydrogen leakage detector is connected to the controller by an LORA wireless communication technology or an NB-IOT wireless communication technology.

Optionally, in the hydrogen leakage detection system, the hydrogen leakage detection system further includes an alarm device, one of the alarm devices is disposed corresponding to one of the hydrogen leakage detectors, and the alarm device is connected to the controller; when the controller judges that there is hydrogen leakage, the controller controls the alarm device to give an alarm.

Optionally, in the hydrogen leakage detection system, the alarm device is a buzzer and/or an alarm lamp.

Optionally, in the hydrogen leakage detection system, the hydrogen leakage detection system further includes a power supply, and the power supply is connected to the controller; the controller controls the power supply to be turned on and off.

Optionally, in the hydrogen leakage detection system, when the alarm device continuously sends an alarm for more than a preset time, the controller cuts off the power supply.

Optionally, in the hydrogen leakage detection system, the controller further includes a display, and the display displays an area covered by the plurality of hydrogen leakage detectors in proportion.

Optionally, in the hydrogen leakage detection system, the controller is one or more of a mobile phone, a tablet computer, a desktop computer, and a smart screen.

Compared with the prior art, this application provides a hydrogen leak testing system, through every section on the hydrogen transmission pipeline gas-liquid separation equipment with hydrogen transmission pipeline junction purification equipment with hydrogen transmission pipeline junction and hydrogen storage equipment with hydrogen transmission pipeline junction is provided with hydrogen leak testing ware. That is to say, the hydrogen leakage detector is arranged at each interface and pipeline through which hydrogen flows, so that whether the hydrogen leaks or not can be detected at each hydrogen-related node, and the safety in the hydrogen production-storage process can be improved. Furthermore, each hydrogen leakage detector comprises an acquisition module, a detection module, a signal processing module and a wireless connection module which are connected in sequence. Every like this hydrogen leak detector all can regard as an independent intellectual detection system node, and a plurality of hydrogen leak detectors can carry out hydrogen leak detection to a plurality of nodes of wading hydrogen simultaneously, have realized like this that whether quick accurate monitoring has revealing and the leakage position that corresponds of hydrogen, have embodied the intelligence of this system, still further improvement the security, also make things convenient for later maintenance.

Drawings

FIG. 1 is a schematic diagram of a hydrogen leak detection system provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of a hydrogen leak detector provided in an embodiment of the present application;

FIG. 3 is a schematic diagram of yet another hydrogen leak detection system provided by an embodiment of the present application;

fig. 4 is an enlarged view in fig. 3A.

Wherein the reference numerals of figures 1 to 4 are as follows:

10-hydrogen production equipment; 20-a gas-liquid separation device; 30-purification equipment; 40-a hydrogen storage device; 50-a hydrogen conveying pipeline; 60-a hydrogen leak detector; 61-an acquisition module; 62-a detection module; 63-a signal processing module; 64-a wireless connection module; 65-a power supply module; 70-a controller; 71-a display; 80-alarm means.

Detailed Description

To make the objects, advantages and features of the present invention clearer, the hydrogen leakage detecting system according to the present invention will be described in further detail with reference to fig. 1 to 4. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

As used in this specification, the singular forms "a", "an" and "the" include plural referents, and the plural forms "a plurality" includes more than two referents unless the content clearly dictates otherwise. As used in this specification, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise, and the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, an integral connection, an electrical connection, and a communication connection. They may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1-2, the present application provides a hydrogen leak detection system comprising: a hydrogen production device 10, a gas-liquid separation device 20, a purification device 30, a hydrogen storage device 40, a multi-stage hydrogen delivery pipeline 50, a plurality of hydrogen leakage detectors 60 and a controller 70; the hydrogen production device 10, the gas-liquid separation device 20, the purification device 30 and the hydrogen storage device 40 are connected in sequence through the hydrogen pipeline 50; at least one hydrogen leakage detector 60 is disposed on each section of the hydrogen transportation pipeline 50, and at least one hydrogen leakage detector 60 is disposed at the connection between the gas-liquid separation device 20 and the hydrogen transportation pipeline 50, at the connection between the purification device 30 and the hydrogen transportation pipeline 50, and at the connection between the hydrogen storage device 40 and the hydrogen transportation pipeline 50. Each hydrogen leakage detector 60 comprises an acquisition module 61, a detection module 62, a signal processing module 63 and a wireless connection module which are connected in sequence; the acquisition module 61 is configured to acquire an air sample, the detection module 62 is configured to detect a hydrogen concentration in the air sample, and the signal processing module 63 is configured to perform signal processing on hydrogen concentration information in the air sample; the hydrogen leakage detector 60 is connected to the controller 70 through the wireless connection module, and transmits a signal processed by the signal processing module 63 to the controller 70, and the controller 70 determines whether there is hydrogen leakage according to the signal.

The hydrogen leakage detector 60 is disposed on each segment of the hydrogen transportation pipeline 50, at the connection between the gas-liquid separation device 20 and the hydrogen transportation pipeline 50, at the connection between the purification device 30 and the hydrogen transportation pipeline 50, and at the connection between the hydrogen storage device 40 and the hydrogen transportation pipeline 50. That is, the hydrogen leakage detector 60 is arranged at each interface and pipeline through which hydrogen flows, so that whether hydrogen leaks or not can be detected at each hydrogen-related node, and the safety in the hydrogen production-storage process can be improved. And, further, each of the hydrogen leakage detectors 60 includes an acquisition module 61, a detection module 62, a signal processing module 63, and a wireless connection module, which are connected in sequence. Every like this hydrogen leak detector 60 all can regard as an independent intelligent detection node, and a plurality of hydrogen leak detectors 60 can carry out hydrogen leak detection to a plurality of nodes of involving in hydrogen simultaneously, have realized like this that whether quick accurate monitoring has the leakage of hydrogen and the leakage position that corresponds, have embodied the intelligence of this system, still further improvement the security, also make things convenient for later maintenance.

Wherein, more preferably, the hydrogen leak detector 60 is provided in the middle of the hydrogen supply pipe 50 of each segment. Therefore, the hydrogen leakage detector 60 arranged on each section of the hydrogen conveying pipeline 50 can be separated from the hydrogen leakage detector 60 arranged at the connecting part of the gas-liquid separation device 20 and the hydrogen conveying pipeline 50, the connecting part of the purification device 30 and the hydrogen conveying pipeline 50 and the connecting part of the hydrogen storage device 40 and the hydrogen conveying pipeline 50, and the problem of inaccurate detection result of the single hydrogen leakage detector 60 caused by mixed detection is avoided.

In one embodiment, the hydrogen leak detector 60 further comprises a power supply module 65, and the power supply module 65 supplies power to the hydrogen leak detector 60, namely, the acquisition module 61, the detection module 62, the signal processing module 63 and the wireless connection module 64. The power supply module 65 is connected with the acquisition module 61, the signal processing module 63 and the wireless connection module 64 in sequence. Thus, the hydrogen leak detector 60 alone can perform hydrogen leak detection without relying on external power supply.

Wherein the hydrogen leak detector 60 is a hydrogen concentration sensor.

In one embodiment, the hydrogen leak detector 60 is coupled to the controller 70 via LORA wireless communication technology or NB-IOT wireless communication technology. Specifically, the wireless connection module 64 in the hydrogen leak detector 60 is connected to the controller 70 by LORA wireless communication technology, or the wireless connection module 64 in the hydrogen leak detector 60 is connected to the controller 70 by NB-IOT wireless communication technology.

When the wireless connection module 64 is connected to the controller 70 through the LORA wireless communication technology, it should be noted that the network layer protocol based on the LORA wireless communication technology is primarily LORAWAN, which defines a network communication protocol and a system architecture, and a communication system network of LORAWAN is a star network frame. In this embodiment, a star network concurrent network in a star network frame is used, so that one-to-many communication can be realized, and a plurality of detection nodes (hydrogen leak detectors 60) can simultaneously communicate with a central point (controller 70). Thus, the energy consumption of the detection node (hydrogen leakage detector 60) is saved, the breakdown of the network caused by the fault of the individual detection node is avoided, and the stability of the network is improved. And the LORA wireless communication technology has the advantage of long communication distance. Generally, the LORA technology can support transmission distances of tens of kilometers, and the architecture is very simple, so that the equipment cost and the use cost of the network deployment are reduced to a certain extent. That is, the controller 70 may be located remotely from the hydrogen-producing-and-storing site, which improves the safety of the overall system. Meanwhile, the system also has the advantages of low power consumption, strong anti-interference capability, high reliability and the like. Specifically, in a common data transmitter based on the LORA wireless communication technology, information can be continuously transmitted to a receiving gateway which is one twenty kilometers away under the condition that two or five batteries supply power, and the common data transmitter can stably work for more than 10 years. Meanwhile, the LORA demodulation technology can still correctly demodulate data under noise, and the sensitivity can even reach-148 dBm; the LORA has excellent anti-interference characteristics, supports automatic random frequency hopping communication, and resists the possibility of instantaneous interference, and occupies less time on frequency points and has less interference on the outside.

When the number of the hydrogen leak detectors 60 in the hydrogen leak detection system is large, that is, the number of the detection nodes is large, the wireless connection module 64 may be connected to the controller 70 through NB-IOT wireless communication technology. It should be noted that the NB-IOT wireless communication technology is a low-cost telecommunication-level wide-area internet of things technology with high reliability and high security that can be integrated with a cellular network for evolution, is constructed on the cellular network, consumes low power, consumes only about 180KHz, and can be directly deployed in a GSM network, a UMTS network, and an LTE network. The NB-IOT wireless communication technology has the capacity of massive connection, and under the condition of the same base station, the NB-IOT can provide 50-100 times of access number compared with the existing wireless technology. One sector can support 10 tens of thousands of connections, the equipment cost is low, the equipment power consumption is low, and the network architecture is optimized. Meanwhile, the method has the advantages of wide coverage, low power consumption, low cost and the like.

It should be noted that the above and below references to "hydrogen-related node" include, but are not limited to, the hydrogen transportation pipeline 50, the connection between the gas-liquid separation device 20 and the hydrogen transportation pipeline 50, the connection between the purification device 30 and the hydrogen transportation pipeline 50, and the connection between the hydrogen storage device 40 and the hydrogen transportation pipeline 50. "sense node" refers to the hydrogen leak detector 60 that is disposed in relation to a hydrogen node. The "leak node" refers to a node at which a hydrogen leak is found after detection by the hydrogen leak detector 60.

Referring to fig. 3-4, further, the hydrogen leakage detecting system further includes alarm devices 80, one of the alarm devices 80 is disposed corresponding to one of the hydrogen leakage detectors 60, and the alarm device 80 is connected to the controller 70; when the controller 70 determines that there is a hydrogen gas leak, the controller 70 controls the alarm device 80 to give an alarm. The connection mode of the alarm device and the controller 70 is the same as that of the hydrogen leakage detector 60 and the controller 70, and is not described herein again.

Wherein, the alarm device 80 is a buzzer and/or an alarm lamp. That is, the alarm device 80 may be a buzzer, an alarm lamp, or a combination of a buzzer and an alarm lamp. When the alarm device 80 is a combination of a buzzer and an alarm lamp, the alarm device can play a role of warning field personnel from sound and prompt light, and the warning effect is stronger.

In yet another embodiment, the hydrogen leak detection system further includes a power supply (not shown) connected to the controller 70; the controller 70 controls the power supply to be turned on and off. When the alarm device 80 continuously sends an alarm for more than a preset time, the controller 70 cuts off the power supply. After hydrogen leakage is detected and an alarm is continuously given, if no field personnel carry out leakage node maintenance, hydrogen can be leaked all the time, and danger is easily caused. Therefore, after the alarm is continuously sent for a preset time, the controller 70 is required to directly control the power supply to be turned off, so that the whole hydrogen production-storage process can be stopped, and further hydrogen leakage can be prevented.

Referring next to fig. 1 or 3, in yet another embodiment, the controller 70 further includes a display 71, and the display 71 displays the area covered by the plurality of hydrogen leak detectors 60 on a scale. That is, the space formed by the entire hydrogen production-storage process is displayed on the display 71 in proportion, and thus, the personnel at the controller 70 end can monitor the situation on site in real time. Furthermore, when the alarm sounds an alarm, the worker at the controller 70 can visually judge the position of the hydrogen leakage node through the display 71, thereby greatly assisting the maintenance work.

The controller 70 is one or more of a mobile phone, a tablet computer, a desktop computer and an intelligent screen. Therefore, multi-terminal control can be realized, mobile control can also be realized, the occupied place of the controller 70 is saved, and the control means is richer and more flexible.

In summary, hydrogen leak detectors 60 are arranged on hydrogen outlets, hydrogen inlets and pipelines involved in hydrogen flow in hydrogen production-storage, and wireless connection modules 64 and controllers 70 on the hydrogen leak detectors 60 can be flexibly networked to detect hydrogen leakage of each hydrogen involved node, so that intelligent detection of each hydrogen involved node can be realized. And an alarm device 80 is arranged beside each hydrogen leakage detector 60, the alarm device 80 is connected with the controller 70, when a certain hydrogen-related node is detected to generate hydrogen leakage, the controller 70 controls the alarm device 80 at the hydrogen-related node to give an alarm so as to prompt a maintainer on the site to generate a specific position of the hydrogen leakage, and therefore overhauling time and cost are saved. After the alarm is continuously output for a certain time, the controller 70 controls the power supply to stop working so as to realize the function of one-key shutdown, no personnel is needed to operate, and once the alarm is continuously output for a certain time, the controller 70 actively controls the power supply to be cut off so as to avoid greater potential safety hazard caused by continuous hydrogen leakage. Meanwhile, the display 71 on the controller 70 can proportionally display all the areas related to the hydrogen leakage detector 60, so that remote monitoring personnel can visually see the conditions on site, and particularly can communicate with the on-site detection personnel according to the conditions displayed on the display 71 in time when hydrogen leakage exists.

Further, for ease of understanding, with reference to fig. 1-4, the process of detecting is described herein with reference to a hydrogen leak detection system implementation: the acquisition module 61 in the hydrogen leakage detector 60 of each hydrogen-involved node samples the instantaneous air flowing through it to obtain an air sample corresponding to the hydrogen-involved node, the detection module 62 detects the hydrogen concentration of the air sample, and the signal processing module 63 forms a concentration signal, and performs position calibration on the concentration signal to match it with the corresponding hydrogen leakage detector 60, which substantially calibrates the position information of the hydrogen-involved node into the concentration signal. The calibrated concentration signal is sent to the controller 70 through the wireless connection module 64, the controller 70 decodes the concentration signal to obtain the hydrogen concentration parameters contained in the concentration signal, analyzes and compares the hydrogen concentration parameters, judges whether hydrogen leakage exists in the corresponding hydrogen-involved node according to the analysis and comparison results, and if the hydrogen leakage exists, the controller 70 controls the alarm device 80 in the corresponding hydrogen-involved node to give an alarm, wherein the alarm can be given in a sound mode or a light mode, or can be given in a sound and light double mode. Further, when a hydrogen leak occurs, the controller 70 forms a concentration cloud based on the analysis and comparison results. That is, according to different leakage degrees, different colors are displayed in the corresponding areas in the display 71, and the darker color indicates the more serious leakage, so that the operator at the controller 70 can visually know the hydrogen leakage degree of each node through the display 71. When the alarm continues for a certain period of time, the controller 70 controls the power supply to stop operating. If there is no hydrogen leakage, the acquisition module 61 acquires the next instantaneous air sample flowing through it, and then repeats the subsequent detection operation, which is repeated in this way and is not described herein.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.

Claims

1. A hydrogen leak detection system, comprising: the system comprises hydrogen production equipment, gas-liquid separation equipment, purification equipment, hydrogen storage equipment, a multi-section hydrogen conveying pipeline, a plurality of hydrogen leakage detectors and a controller; the hydrogen production equipment, the gas-liquid separation equipment, the purification equipment and the hydrogen storage equipment are sequentially connected through the hydrogen conveying pipeline; each section of the hydrogen conveying pipeline is provided with at least one hydrogen leakage detector, and the joints of the gas-liquid separation equipment and the hydrogen conveying pipeline, the joints of the purification equipment and the hydrogen conveying pipeline and the joints of the hydrogen storage equipment and the hydrogen conveying pipeline are provided with at least one hydrogen leakage detector; each hydrogen leakage detector comprises an acquisition module, a detection module, a signal processing module and a wireless connection module which are connected in sequence; the acquisition module is used for acquiring an air sample, the detection module is used for detecting the hydrogen concentration in the air sample, and the signal processing module is used for carrying out signal processing on the hydrogen concentration information in the air sample; the hydrogen leakage detector is connected with the controller through the wireless connection module and sends a signal processed by the signal processing module to the controller, and the controller judges whether hydrogen leakage exists according to the signal.

2. The hydrogen leak detection system of claim 1, wherein the hydrogen leak detector further comprises a power module that powers the hydrogen leak detector.

3. The hydrogen leak detection system according to claim 2, wherein the hydrogen leak detector is a hydrogen concentration sensor.

4. The hydrogen leak detection system of claim 1, wherein the hydrogen leak detector is coupled to the controller via LORA wireless communication technology or NB-IOT wireless communication technology.

5. The hydrogen leak detection system according to claim 1, further comprising alarm means, one of which is provided for each of the hydrogen leak detectors, the alarm means being connected to the controller; when the controller judges that there is hydrogen leakage, the controller controls the alarm device to give an alarm.

6. The hydrogen leak detection system according to claim 5, wherein the alarm device is a buzzer and/or an alarm lamp.

7. The hydrogen leak detection system according to claim 5, further comprising a power supply connected to the controller; the controller controls the power supply to be turned on and off.

8. The hydrogen leak detection system according to claim 7, wherein the controller cuts off the operation of the power supply when the alarm means continuously issues the alarm for more than a preset time.

9. The hydrogen leak detection system of claim 1 wherein the controller further comprises a display on which the area covered by the plurality of hydrogen leak detectors is scaled.

10. The hydrogen leak detection system of claim 1, wherein the controller is one or more of a mobile phone, a tablet computer, a desktop computer, and a smart screen in any combination.