Natural gas station alarm system

Abstract

The utility model relates to a natural gas station alarm system, which belongs to the technical field of natural gas safety equipment, and comprises a production operation monitoring device, an alarm controller and an audible and visual alarm, the production operation monitoring device is connected with the alarm controller through a network, the alarm controller is connected with the audible and visual alarm, and the audible and visual alarm is connected with the production operation monitoring device. The audible and visual alarm is installed in a working area of the natural gas station, and the production operation monitoring device is used for sending alarm information to the alarm controller. The alarm information comprises fire and gas system alarm information, pipeline protection system alarm information, security and protection system alarm information, emergency stop alarm information, process system alarm information, metering system alarm information, electrical system alarm information, automation system alarm information, communication system alarm information and valve chamber alarm information. The method has the effect of improving the accuracy and timeliness of natural gas station alarm monitoring.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas safety equipment, in particular to a natural gas station alarm system. Background Art

[0002] With the adjustment of the global energy structure and the promotion of clean energy, natural gas, as an efficient and environmentally friendly energy form, has an increasing share in the energy consumption structure. As a key node in the natural gas transmission network, the safe and stable operation of natural gas transmission stations is of great significance to ensuring energy supply and maintaining social stability.

[0003] Traditional natural gas transmission station management mainly relies on manual monitoring and duty system, that is, the duty personnel are on duty in the station control room 24 hours a day to monitor various parameters in the station in real time, such as pipeline pressure, temperature, flow, etc. However, manual monitoring has great uncertainty. The energy, experience and judgment ability of the duty personnel will affect the accuracy and timeliness of monitoring. Long-term duty may lead to fatigue and distraction, thereby increasing the risk of accidents. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a natural gas station alarm system, aiming to solve at least one of the above technical problems.

[0005] The technical solution of the utility model to solve the above technical problems is as follows: a natural gas station alarm system, characterized in that it includes a production and operation monitoring device, an alarm controller and an audible and visual alarm, the production and operation monitoring device is connected to the alarm controller through a network, the alarm controller is connected to the audible and visual alarm, the audible and visual alarm is installed in the working area of ​​the natural gas station, the production and operation monitoring device is used to send alarm information to the alarm controller, the alarm information includes fire and gas system alarm information, pipeline protection system alarm information, security system alarm information, emergency stop alarm information, process system alarm information, metering system alarm information, electrical system alarm information, automation system alarm information, communication system alarm information and valve room alarm information.

[0006] The beneficial effect of the utility model is that through the production and operation monitoring device, the system can monitor various operating conditions of the natural gas station in real time, including the fire and gas system, pipeline protection system, security system, etc. Once an abnormality or potential risk is detected, an alarm message is sent to the alarm controller. This real-time monitoring and timely warning mechanism greatly improves the safety of the station and helps prevent possible accidents and disasters. The alarm controller can process, integrate and classify a variety of alarm information, including but not limited to alarm information from various aspects such as the fire and gas system, pipeline protection system, security system, and emergency stop. It enables station managers to fully understand the operating status of the station and promptly discover and deal with various problems. Once the alarm controller receives the alarm information, it will immediately trigger the sound and light alarm. The sound and light alarm can emit obvious sound and light signals to quickly attract the attention of personnel, ensuring that station personnel can quickly respond to the alarm, so as to take necessary measures in time to prevent the accident from expanding. The accuracy and timeliness of natural gas station alarm monitoring are improved.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Further, the alarm controller includes an alarm controller housing, in which a control module, a relay, a power module and a surge protector are integrated, the power module and the relay are electrically connected to the control module, and the surge protector is electrically connected to the power module;

[0009] The alarm controller also includes a touch display screen, which is electrically connected to the alarm control module and is installed on one side of the controller box.

[0010] The beneficial effects of adopting the above further scheme are: the alarm controller adopts a modular design, including multiple modules such as a control module, a relay, a power module and a surge protector, which are easy to replace or repair separately, reducing maintenance costs and time. The power module provides a stable power supply for the entire alarm controller, and the relay is connected to the control module to control external devices according to the instructions of the control module, such as triggering the alarm bell, starting the fire fighting equipment, etc. The touch display screen is electrically connected to the control module, so that the user can intuitively view the alarm information and operate the control function, which improves the ease of use and operation experience of the system.

[0011] Furthermore, the alarm controller also includes a communication module, and the communication module includes a communication interface, and the communication interface is any one or more of an RS485 interface, an RS232 interface, a TCP interface and an IP interface.

[0012] The beneficial effect of adopting the above further solution is that by integrating multiple communication interfaces, the alarm controller can flexibly adapt to different communication environments and requirements. This enables the alarm controller to communicate effectively with multiple devices and systems to achieve data transmission and instruction exchange.

[0013] Further, the alarm controller further comprises a latch module, a reset module and a reset button, the latch module and the reset module are both electrically connected to the control module, and the reset module is electrically connected to the reset button;

[0014] The latch module is used to set the triggered alarm when the control module triggers the alarm according to the alarm information;

[0015] The reset module is used to clear the alarm triggered by the controller through a signal triggered by a reset button.

[0016] The beneficial effect of adopting the above further solution is that the latch module can be set when the alarm is triggered, thereby maintaining the alarm state. Once an alarm occurs, the alarm controller will continue to output the alarm signal until the alarm is processed or manually reset, ensuring that the alarm information will not be accidentally cleared or ignored, thereby improving the reliability and effectiveness of the alarm.

[0017] The reset module is connected to the alarm controller through a reset button. The alarm is cleared by pressing the reset button. By providing a convenient manual reset method, station personnel can flexibly handle alarm information according to actual conditions, thereby improving work efficiency and user experience.

[0018] Furthermore, the control module is a PLC controller.

[0019] Further, the sound and light alarm is connected to the alarm controller via a network, or the sound and light alarm is electrically connected to the alarm controller;

[0020] The sound and light alarm comprises a dust cover, an alarm light which can be moved to the outside of the dust cover is arranged inside the dust cover, and at least one sound is also installed on the inner wall of the dust cover.

[0021] The beneficial effect of adopting the above further scheme is that the sound and light alarm uses a combination of alarm lights and sound, which can provide strong visual and auditory stimulation when the alarm is triggered, and quickly attract the attention of personnel. This dual alarm prompt method can ensure that even in a noisy or dimly lit environment, it can effectively remind personnel to deal with the alarm situation in a timely manner. The dust cover protects the alarm light and sound from dust, dirt and other pollutants to ensure the normal operation and long-term stability of the sound and light alarm. At the same time, the dust cover also has a certain protective effect, which can prevent accidental touching or damage to the alarm light and sound. The alarm light can be moved outside the dust cover, so that the alarm light can be better highlighted when needed, improving the visibility of the alarm.

[0022] Furthermore, an electric push rod is fixedly installed on the top of the dust cover, and the movable end of the electric push rod is fixedly connected to the warning light. An opening is provided at the bottom end of the dust cover, and a cleaning component for cleaning the warning light is provided at the opening.

[0023] The beneficial effect of adopting the above further scheme is that the movable end of the electric push rod is fixedly connected to the alarm light, so that the alarm light can be lifted and lowered in the dust cover. When the sound and light alarm is needed to alarm, the alarm controller controls the electric push rod to push the alarm light to move outside the dust cover and turn on the alarm light, thereby improving the alarm visibility. When the alarm light is not needed to alarm, the alarm controller controls the electric push rod to pull the alarm light to move inside the dust cover and turn off the alarm light. The alarm light is cleaned by the cleaning component.

[0024] Furthermore, the cleaning component includes a plurality of cleaning brushes.

[0025] The beneficial effect of adopting the above further scheme is that when the electric push rod pushes the dust cover to move, the cleaning brush can clean the alarm light, effectively remove dust, dirt and other impurities attached to the alarm light, ensure that the alarm light remains clean, extend the service life of the alarm light, and reduce replacement and maintenance costs.

[0026] Furthermore, a sound leakage hole is provided on a side wall of the dust cover opposite to one side of each of the speakers.

[0027] The beneficial effect of adopting the above further solution is that the alarm sound emitted by the speaker is better transmitted to the outside of the dust cover through the sound leakage hole, thereby avoiding excessive reflection and attenuation of the sound inside the dust cover.

[0028] Furthermore, the side wall of the dust cover is provided with a baffle plate for blocking multiple adjacent sound leakage holes relative to the corresponding position of each of the speakers, and a connecting rope is provided on each of the baffle plates. The end of the connecting rope away from the baffle plate passes through the dust cover and is connected to the movable end of the electric push rod.

[0029] The beneficial effect of adopting the above further solution is that the shielding plate is connected to the movable end of the electric push rod by a connecting rope, so that the shielding plate can be automatically controlled. When the electric push rod drives the alarm light to move outside the dust cover, the shielding plate will be opened to expose the sound leakage hole, so that the alarm sound emitted by the sound can be better transmitted to the outside of the dust cover through the sound leakage hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural block diagram of a natural gas station alarm system according to an embodiment of the utility model;

[0031] Figure 2 This is a structural block diagram of an alarm controller according to an embodiment of the utility model;

[0032] Figure 3 A schematic diagram of the structure of an audible and visual alarm according to an embodiment of the utility model;

[0033] Figure 4 A schematic diagram of the structure of a sound leakage hole of an audible and visual alarm according to an embodiment of the utility model;

[0034] Figure 5 The utility model is a cross-sectional view of an audible and visual alarm according to an embodiment of the utility model.

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 1. Production operation monitoring device; 2. Alarm controller; 21. Control module; 22. Relay; 23. Power module; 24. Surge protector; 25. Touch screen; 26. Communication module; 27. Latch module; 28. Reset module; 3. Sound and light alarm; 31. Dust cover; 32. Warning light; 33. Sound; 34. Electric push rod; 36. Cleaning brush; 37. Sound leakage hole; 38. Shielding plate; 39. Connecting rope. DETAILED DESCRIPTION

[0037] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0038] like Figure 1 As shown, a natural gas station alarm system includes a production and operation monitoring device 1, an alarm controller 2 and an audible and visual alarm 3. The production and operation monitoring device 1 is connected to the alarm controller 2 through a network, the alarm controller 2 is connected to the audible and visual alarm 3, and the audible and visual alarm 3 is installed in the working area of ​​the natural gas station.

[0039] The production operation monitoring device 1 is used to send alarm information to the alarm controller 2, and the alarm information includes fire and gas system alarm information, pipeline protection system alarm information, security system alarm information, emergency stop alarm information, process system alarm information, metering system alarm information, electrical system alarm information, automation system alarm information, communication system alarm information and valve room alarm information;

[0040] An alarm controller 2 is used to screen, classify and grade the alarm information, determine the level of the alarm information, display the alarm information according to the level, and trigger the sound and light alarm 3 to sound an alarm according to the alarm information and the level;

[0041] The sound and light alarm 3 is used to give a sound and light alarm to the working area of ​​the natural gas station when the alarm controller 2 triggers the sound and light alarm 3.

[0042] Through the production and operation monitoring device 1, the system can monitor various operating states of the natural gas station in real time, including the fire and gas system, pipeline protection system, security system, etc. Once an abnormality or potential risk is detected, an alarm message is sent to the alarm controller 2. This real-time monitoring and timely warning mechanism greatly improves the safety of the station and helps prevent possible accidents and disasters. The alarm controller 2 can process, integrate and classify a variety of alarm information, including but not limited to alarm information from various aspects such as the fire and gas system, pipeline protection system, security system, and emergency stop, and display the alarm information so that the station management personnel can fully understand the operation status of the station and promptly discover and deal with various problems. Once the alarm controller 2 receives the alarm information, it will immediately trigger the sound and light alarm 3. The sound and light alarm 3 can emit obvious sound and light signals to quickly attract the attention of personnel, ensuring that the station personnel can quickly respond to the alarm, so as to take necessary measures in time to prevent the accident from expanding. The accuracy and timeliness of the alarm monitoring of the natural gas station are improved.

[0043] Optionally, the sound and light alarm 3 is connected to the alarm controller 2 via a network, or the sound and light alarm 3 is electrically connected to the alarm controller 2.

[0044] If the sound and light alarm 3 supports the digital communication protocol, the alarm controller 2 can be connected to the sound and light alarm 3 through its communication interface, so that the sound and light alarm 3 can sound an alarm. The control module 21 in the alarm controller 2 can also connect the control signal to the input end of the sound and light alarm 3 through the relay 22 through a hard line, so that the sound and light alarm 3 can sound an alarm.

[0045] like Figure 2As shown, the alarm controller 2 includes an alarm controller housing, in which a control module 21, a relay 22, a power module 23, a surge protector 24, a communication module 26, a latch module 27 and a reset module 28 are integrated. The power module 23, the relay 22, the communication module 26, the reset module 28 and the latch module 27 are all connected to the control module 21 through the terminal block, and the surge protector 24 is electrically connected to the power module 23.

[0046] The alarm controller 2 further includes a touch screen 25 and a reset button. The touch screen 25 is electrically connected to the control module 21 . The touch screen 25 is mounted on one side of the control box. The reset button is electrically connected to the reset module 28 .

[0047] Among them, the control module 21 is a PLC controller, and the control module 21 has built-in programs for screening, classifying, and grading alarm information, and divides the alarm information into ten types, namely, fire and gas system alarm, pipeline protection system alarm, security system alarm, emergency stop alarm, process system alarm, metering system alarm, electrical system alarm, automation system alarm, communication system alarm, and valve room alarm. According to the importance of the alarm information, the alarm is divided into three levels, namely, I, II, and III, which are displayed in red, yellow, and blue on the touch screen 25. The built-in programs of the control module 21 are all existing technologies.

[0048] Relay 22, used to control the on and off of external devices according to the instructions of control module 21;

[0049] The power supply module 23 is used to provide a stable power supply for the alarm controller 2 to ensure the normal operation of each module;

[0050] The communication module 26 is used to realize information interaction between the alarm controller 2 and the production operation monitoring device 1 and the sound and light alarm 3, including uploading of alarm information, issuing of control instructions, etc. The communication module 26 includes a communication interface, which is any one or more of an RS485 interface, an RS232 interface, a TCP interface and an IP interface.

[0051] The surge protector 24 is used to protect the power module 23 and other electronic components from the impact of instantaneous overvoltage in the power grid, thereby improving the stability and reliability of the natural gas station alarm system.

[0052] The latch module 27 is used to set the triggered alarm when the control module 21 triggers the alarm according to the alarm information, and maintain the alarm state until the reset module 28 clears it;

[0053] The reset module 28 is used to clear the alarm triggered by the controller through the signal triggered by the reset button. When the reset button is pressed or the reset signal is received, the reset module 28 sends a reset instruction to the control module 21. After receiving the instruction, the control module 21 clears the triggered alarm and restores the system to the initial state.

[0054] The touch display screen 25 is used to display the alarm message corresponding to the alarm triggered by the control module 21. The alarm message includes the alarm category and specific alarm information, and displays the corresponding color according to the level of the alarm information.

[0055] When an alarm is triggered, the latch module 27 sets the triggered alarm and maintains the alarm state. The touch screen 25 of the alarm controller 2 displays the alarm information in the corresponding color of the alarm level. At the same time, the alarm controller 2 outputs a control signal to the sound and light alarm 3 according to the alarm level and alarm information output. The sound and light alarm 3 emits an alarm sound and light according to the control signal. When the manager presses the reset button, the alarm message on the touch screen 25 stops flashing and disappears from the touch screen 25. At the same time, the alarm control module 21 controls the sound and light alarm 3 to stop the alarm.

[0056] When the alarm controller 2 receives a new alarm message, the alarm is triggered again, the latch module 27 is reset again, and the alarm controller 2 outputs a control signal to the sound and light alarm 3 according to the alarm level and the alarm message output. The sound and light alarm 3 triggers the sound and light alarm to remind the station personnel to check and perform related operations.

[0057] The latch module 27 can be set when the alarm is triggered, thereby maintaining the alarm state. Once an alarm occurs, the alarm controller 2 will continue to output an alarm signal until the alarm is processed or manually reset, ensuring that the alarm information will not be accidentally cleared or ignored, thereby improving the reliability and effectiveness of the alarm. The reset module 28 is connected to the alarm controller 2 through a reset button, and the alarm is cleared by pressing the reset button. By providing a convenient manual reset method, station personnel can flexibly handle alarm information according to actual conditions, thereby improving work efficiency and user experience.

[0058] like Figure 3 , Figure 4 and Figure 5 As shown, the sound and light alarm 3 includes a dust cover 31, and an alarm light 32 that can be moved to the outside of the dust cover 31 is arranged inside the dust cover 31. At least one speaker 33 is also installed on the inner wall of the dust cover 31. In the embodiment of the present application, two speakers 33 are installed in the dust cover 31. The dust cover 31 can be made of any one of translucent material, transparent material or opaque material, but is not limited to this.

[0059] An electric push rod 34 is fixedly installed on the top of the dust cover 31, and the movable end of the electric push rod 34 is fixedly connected to the warning light 32. An opening is opened at the bottom of the protective cover. The side wall of the dust cover 31 is located on one side of each speaker 33 and is provided with a sound leakage hole 37.

[0060] When the sound and light alarm 3 is needed to sound an alarm, each speaker 33 and the alarm light 32 are started, and the electric push rod 34 is controlled to push the alarm light 32 to move outside the dust cover 31. When the sound and light alarm 3 is not needed to sound an alarm, the alarm controller 2 controls the electric push rod 34 to pull the alarm light 32 to move into the dust cover 31 and turn off the alarm light 32 and each speaker 33.

[0061] The combination of the alarm light 32 and the sound 33 can provide strong visual and auditory stimulation when the alarm is triggered, quickly attracting the attention of personnel, and the dust cover 31 protects the alarm light 32 and the sound 33 from dust, dirt and other pollutants, ensuring the normal operation and long-term stability of the sound and light alarm 3. At the same time, the dust cover 31 also has a certain protective effect, which can prevent accidental touching or damage to the alarm light 32 and the sound 33. The alarm light 32 can be moved outside the dust cover 31, so that the alarm light 32 can be better highlighted when needed, improving the visibility of the alarm.

[0062] Furthermore, a cleaning assembly for cleaning the warning light 32 is arranged around the opening of the dust cover 31, and the cleaning assembly includes a plurality of cleaning brushes 36. When the electric push rod 34 pushes the dust cover 31 to move, the cleaning brushes 36 can clean the warning light 32, effectively remove dust, dirt and other impurities attached to the warning light 32, ensure that the warning light 32 remains clean, extend the service life of the warning light 32, and reduce replacement and maintenance costs.

[0063] Furthermore, a baffle plate 38 for blocking multiple adjacent sound leakage holes 37 is provided on the outer side wall of the dust cover 31 corresponding to the position of each of the speakers 33, each heat baffle is rotatably connected to the dust cover 31, and a connecting rope 39 is provided on each baffle plate 38, and one end of the connecting rope 39 away from the baffle plate 38 passes through the dust cover 31 and is connected to the movable end of the electric push rod 34.

[0064] The shielding plate 38 is connected to the movable end of the electric push rod 34 by a connecting rope 39, so that the automatic control of the shielding plate 38 can be realized. When the electric push rod 34 drives the alarm light 32 to move outside the dust cover 31, the shielding plate 38 will be opened to expose the sound leakage hole 37, so that the alarm sound emitted by the speaker 33 can be better transmitted to the outside of the dust cover 31 through the sound leakage hole 37.

[0065] The implementation principle of a natural gas station alarm system provided in the present application is: the production operation monitoring device 1 sends alarm information to the alarm controller 2, the alarm controller 2 displays the alarm information on the touch display screen 25, and triggers the sound and light alarm 3.

[0066] When an alarm is triggered, the latch module 27 is set, and the alarm controller 2 continuously outputs the alarm signal, which enables the sound and light alarm 3 to continuously sound and light alarm. After hearing it, the station staff can check it on the alarm controller 2. When the alarm message on the touch screen 25 does not affect the production operation or solve it, the station staff can click the reset button, the latch module 27 is reset, the alarm signal is eliminated, and the sound and light alarm 3 stops alarming.

[0067] When the alarm controller 2 triggers a new alarm, the latch module 27 is reset again, the alarm controller 2 outputs the alarm signal again, and the sound and light alarm 3 triggers the sound and light alarm again to remind the station personnel to check and perform related operations.

[0068] When alarms of different levels are triggered, the sound and light alarm 3 can emit different alarm sounds. Station personnel can respond to and handle the alarm according to the importance of the alarm and reset the sound and light alarm 3 to avoid long-term triggering of the sound and light alarm 3 and affecting other personnel.

[0069] It should be noted that this solution protects each module and the connection relationship between each module, and the algorithm programs involved are all existing technologies.

[0070] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0071] In addition, in the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0073] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A natural gas station alarm system, characterized in that: The invention comprises a production operation monitoring device (1), an alarm controller (2) and an audible and visual alarm (3); the production operation monitoring device (1) is connected to the alarm controller (2) via a network; the alarm controller (2) is connected to the audible and visual alarm (3); the audible and visual alarm (3) is installed in the working area of ​​the natural gas station; and the production operation monitoring device (1) is used to send alarm information to the alarm controller (2).

2. A natural gas station alarm system according to claim 1, characterized in that: The alarm controller (2) comprises an alarm controller housing, wherein a control module (21), a relay (22), a power module (23) and a surge protector (24) are integrated in the alarm controller housing, wherein the power module (23) and the relay (22) are both electrically connected to the control module (21), and the surge protector (24) is electrically connected to the power module (23); The alarm controller (2) further comprises a touch display screen (25), wherein the touch display screen (25) is electrically connected to the control module (21), and the touch display screen (25) is mounted on one side of the alarm controller housing.

3. A natural gas station alarm system according to claim 2, characterized in that: The alarm controller (2) further comprises a communication module (26), wherein the communication module (26) comprises a communication interface, wherein the communication interface is any one or more of an RS485 interface, an RS232 interface, a TCP interface and an IP interface.

4. A natural gas station alarm system according to claim 2, characterized in that: The alarm controller (2) further comprises a latch module (27), a reset module (28) and a reset button, wherein the latch module (27) and the reset module (28) are both electrically connected to the control module (21), and the reset module (28) is electrically connected to the reset button; The latch module (27) is used to set the triggered alarm when the control module (21) triggers an alarm according to the alarm information; The reset module (28) is used to clear the alarm triggered by the control module (21) through a signal triggered by a reset button.

5. A natural gas station alarm system according to claim 2, characterized in that: The control module (21) is a PLC controller.

6. A natural gas station alarm system according to claim 1, characterized in that: The sound and light alarm (3) is connected to the alarm controller (2) via a network, or the sound and light alarm (3) is electrically connected to the alarm controller (2); The sound and light alarm (3) comprises a dust cover (31), an alarm light (32) which can be moved to the outside of the dust cover (31) is arranged inside the dust cover (31), and at least one speaker (33) is also installed on the inner wall of the dust cover (31).

7. A natural gas station alarm system according to claim 6, characterized in that: An electric push rod (34) is fixedly mounted on the top of the dust cover (31), and a movable end of the electric push rod (34) is fixedly connected to the warning light (32). An opening is provided at the bottom of the dust cover (31), and a cleaning component for cleaning the warning light (32) is provided at the opening.

8. A natural gas station alarm system according to claim 7, characterized in that: The cleaning component includes a plurality of cleaning brushes (36).

9. A natural gas station alarm system according to claim 7, characterized in that: A sound leakage hole (37) is provided on a side wall of the dust cover (31) opposite to each of the speakers (33).

10. A natural gas station alarm system according to claim 9, characterized in that: The side wall of the dust cover (31) is provided with a shielding plate (38) for blocking a plurality of adjacent sound leakage holes (37) at a position corresponding to each of the speakers (33); each of the shielding plates (38) is provided with a connecting rope (39); one end of the connecting rope (39) away from the shielding plate (38) passes through the dust cover (31) and is connected to the movable end of the electric push rod (34).

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