Liquid level meter and fire extinguishing equipment

Abstract

The embodiment of the utility model discloses a liquid level meter and fire extinguishing equipment, and relates to but is not limited to a fire extinguishing equipment technology. The liquid level meter comprises a shell assembly provided with an installation space and an observation hole, a connecting assembly arranged on the shell assembly and partially exposed out of the shell assembly, a sensor assembly and a display assembly installed in the installation space. The sensor assembly is detachably connected with the connecting assembly, and the sensor assembly is arranged to be capable of being connected with the liquid storage unit and monitoring liquid level information of the liquid storage unit. In this way, the type of the sensor assembly can be conveniently replaced, the sensor assembly matched with the installation position, the liquid storage depth and the liquid storage volume of the liquid level meter located on the liquid storage unit is selected according to the type of the liquid storage unit, and the liquid level meter can be conveniently matched with liquid storage units of different types by replacing the type of the sensor assembly. Due to the fact that other parts, except the sensor assembly, of the liquid level meter do not need to be replaced according to the model of the liquid storage unit, the replacement cost is saved, and the universality of the other parts, except the sensor assembly, of the liquid level meter is improved.

Description

Technical Field

[0001] The present application relates to but is not limited to fire extinguishing equipment technology, and in particular to a liquid level meter and fire extinguishing equipment. Background Art

[0002] As a monitoring device, the liquid level meter can monitor the liquid level of the liquid storage unit in the fire extinguishing equipment in real time to ensure the normal operation of the fire extinguishing equipment. Due to the differences in the installation position of the liquid level meter and the liquid storage depth and volume of the liquid storage unit of different models, the liquid level meter of the same specification cannot be adapted to different models of liquid storage units. The versatility between the various components in the liquid level meter is poor. After changing the model of the liquid storage unit, the liquid level meter needs to be replaced as a whole, resulting in high replacement costs. Utility Model Content

[0003] The present application provides a liquid level meter and a fire extinguishing device, aiming to solve the technical problem of poor commonality between components in the existing liquid level meter.

[0004] To achieve the above objectives, the present application provides a liquid level meter, comprising:

[0005] The housing assembly is provided with an installation space, and the housing assembly is provided with an observation hole communicating with the installation space;

[0006] A connecting component, disposed on the housing component and partially exposed from the housing component;

[0007] a sensor assembly, detachably connected to the connecting assembly, wherein the sensor assembly is configured to be connected to the liquid storage unit and monitor liquid level information of the liquid storage unit; and

[0008] A display component is installed in the installation space, wherein the display component has a display area arranged opposite to the observation hole, the display component is electrically connected to the sensor component through the connecting component, and the display component is configured to display the liquid level information in the display area.

[0009] In some embodiments of the liquid level meter, the sensor assembly includes a first joint and a liquid level rod, the first joint includes a connecting part and a plug-in part, the connecting part is detachably connected to the connecting assembly, the connecting part is connected to the liquid level rod via the plug-in part, the plug-in part is configured to be able to be plugged into a monitoring hole located on the liquid storage unit, and the outer diameter of the plug-in part decreases in a step-like manner from the connecting part to the liquid level rod.

[0010] In some embodiments of the liquid level meter, a driving portion is protruded from an outer wall of the plug-in portion, and the driving portion is configured to drive the sensor assembly to move under the action of an external force.

[0011] In some embodiments of the liquid level meter, the connecting component includes a connecting member and a wire, the wire is electrically connected between the display component and the connecting member, the connecting member is connected to the shell component and has a mounting hole exposed from the shell component, and the connecting part is plugged into the mounting hole.

[0012] In some embodiments of the liquid level meter, the connecting member is slidably connected to the housing assembly, and the connecting assembly can slide relative to the housing assembly to change the size of the connecting member exposed from the housing assembly; and / or

[0013] The connecting member is rotatably connected to the housing assembly.

[0014] In some embodiments of the liquid level meter, the connecting member has a circumferential wall surrounding the mounting hole, and the connecting assembly further includes a locking member, which is connected to the circumferential wall and can drive the circumferential wall to clamp the connecting portion.

[0015] In some embodiments of the liquid level meter, the display component includes a display panel, a circuit board and a power supply unit, the display area is located on the display panel, the connection component, the display panel and the power supply unit are electrically connected through the circuit board, and the power supply unit is configured to supply power to the display panel and the sensor component.

[0016] In some embodiments of the liquid level meter, the liquid level meter further comprises a signal transceiver component, the signal transceiver component is electrically connected to the circuit board, and is configured to transmit the liquid level information to the outside and receive a control signal to control the liquid level meter; and / or

[0017] The liquid level meter also includes a reset component, which is electrically connected to the circuit board and is configured to reset the liquid level meter.

[0018] In some embodiments of the liquid level gauge, the housing assembly includes a transparent member, an upper cover, a bottom cover, and an annular wall located between the upper cover and the bottom cover, wherein the annular wall is detachably connected to at least one of the upper cover and the bottom cover and clamps a sealing member;

[0019] The upper cover, the bottom cover and the annular wall together enclose the installation space. The observation hole is arranged on the upper cover. The transparent member can cover the observation hole and is clamped between the upper cover and the display area.

[0020] To achieve the above objectives, the present application also provides a fire extinguishing device, including:

[0021] a liquid storage unit having a liquid storage cavity and a monitoring hole communicating with the liquid storage cavity; and

[0022] The liquid level meter as described above is arranged on the liquid storage unit.

[0023] Implementing the embodiments of the present application will have the following beneficial effects:

[0024] The liquid level meter of the above scheme is applied to the fire extinguishing equipment. In addition to making the fire extinguishing equipment have excellent liquid level monitoring efficiency, it can also improve the versatility of the liquid level meter. Specifically, the liquid level meter includes a shell assembly provided with an installation space and an observation hole, a connection assembly arranged on the shell assembly and partially exposed from the shell assembly, a sensor assembly, and a display assembly installed in the installation space. Among them, the sensor assembly is detachably connected to the connection assembly, and the sensor assembly is configured to be connected to the liquid storage unit and monitor the liquid level information of the liquid storage unit. In this way, it is convenient to replace the type of sensor assembly, so as to select a sensor assembly that is adapted to the installation position of the liquid level meter located on the liquid storage unit and the liquid storage depth and volume according to the model of the liquid storage unit, so as to facilitate the adaptation of different models of liquid storage units by replacing the type of sensor assembly. In addition, since other components of the liquid level meter except the sensor assembly do not need to be replaced according to the model of the liquid storage unit, the replacement cost is saved and the versatility of other components of the liquid level meter except the sensor assembly is improved.

[0025] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by implementing the present application. Other advantages of the present application can be realized and obtained by the schemes described in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide an understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0027] Figure 1 This is a schematic diagram of the connection between the liquid level meter and the liquid storage unit in one embodiment of the present application;

[0028] Figure 2 This is a front view of the liquid level meter in one embodiment of the present application without the sensor assembly;

[0029] Figure 3 for Figure 2 A top view of the level gauge shown;

[0030] Figure 4 This is a schematic diagram of an explosion structure in one embodiment of the present application;

[0031] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of the middle part A;

[0032] Figure 6 for Figure 4 Schematic diagram of the enlarged structure of part B in the middle.

[0033] Description of Figure Numbers:

[0034] 10. Liquid storage unit; 20. Liquid level gauge; 21. Shell assembly; 211. Transparent member; 212. Upper cover; 213. Bottom cover; 214. Annular wall; 22. Connecting assembly; 221. Connecting member; 2211. Circumferential wall; 222. Wire; 223. First gasket; 224. Locking member; 23. Sensor assembly; 231. First connector; 2311. Connecting part; 2312. Plug-in part; 2313. Driving part; 232. Liquid level rod; 24. Display assembly; 241. Display panel; 242. Circuit board; 243. Power supply unit; 25. Signal transceiver assembly; 251. Antenna; 252. Second connector; 253. Second gasket; 26. Reset assembly; 261. Button; 262. Fixing member; 100. Observation hole; 200. Mounting hole.

[0035] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] The present application describes multiple embodiments, but the description is exemplary rather than restrictive, and it is obvious to those skilled in the art that there may be more embodiments and implementations within the scope of the embodiments described in the present application. Although many possible feature combinations are shown in the drawings and discussed in the specific embodiments, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with any other feature or element in any other embodiment, or may replace any other feature or element in any other embodiment.

[0037] The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in the present application may also be combined with any conventional features or elements to form a unique invention scheme defined by the claims. Any features or elements of any embodiment may also be combined with features or elements from other invention schemes to form another unique invention scheme defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in the present application may be implemented individually or in any appropriate combination. Therefore, except for the limitations made according to the attached claims and their equivalents, the embodiments are not subject to other restrictions. In addition, various modifications and changes may be made within the scope of protection of the attached claims.

[0038] In addition, when describing representative embodiments, the specification may have presented the method and / or process as a specific sequence of steps. However, to the extent that the method or process does not rely on the specific order of steps described in the application, the method or process should not be limited to the steps of the specific order. As will be understood by those of ordinary skill in the art, other sequences of steps are also possible. Therefore, the specific sequence of the steps set forth in the specification should not be interpreted as a limitation to the claims. In addition, the claims for the method and / or process should not be limited to the steps of performing them in the order written, and those skilled in the art can easily understand that these sequences can change, and still remain within the spirit and scope of the embodiments of the application.

[0039] As a monitoring device, the liquid level meter can monitor the liquid level of the liquid storage unit in the fire extinguishing equipment in real time to ensure the normal operation of the fire extinguishing equipment. Due to the differences in the installation position of the liquid level meter and the liquid storage depth and volume of the liquid storage unit of different models, the liquid level meter of the same specification cannot be adapted to different models of liquid storage units. The versatility between the various components in the liquid level meter is poor. After changing the model of the liquid storage unit, the liquid level meter needs to be replaced as a whole, resulting in high replacement costs.

[0040] In order to solve the above technical problems, the embodiments of the present application provide a liquid level meter and a fire extinguishing device. The fire extinguishing device can be used in various occasions and environments such as companies, schools, homes, factories, etc. to extinguish the fire location, so as to improve the fire safety capabilities of various occasions and environments. The fire extinguishing device can be, but is not limited to, an external storage pressure heptafluoropropane fire extinguishing device or an external storage pressure perfluoropropane fire extinguishing device. In addition, in some exemplary embodiments, the liquid level meter can also be used for liquid level monitoring of cryogenic liquids such as liquid nitrogen, liquid oxygen, liquid argon, and liquefied natural gas.

[0041] Please combine Figures 1 to 4 , the fire extinguishing equipment provided in the embodiment of the present application is now described. The fire extinguishing equipment includes a liquid storage unit 10 and a liquid level meter 20. The liquid storage unit 10 has a liquid storage chamber and a monitoring hole connected to the liquid storage chamber. The liquid storage chamber is configured to store a fire extinguishing agent. The monitoring hole is configured to provide a space for installing the liquid level meter 20. The liquid storage unit 10 is also provided with a fire extinguishing agent inlet and outlet hole. The fire extinguishing agent is filled through the fire extinguishing agent inlet and outlet hole. In addition, the fire extinguishing agent can be sprayed from the fire extinguishing agent inlet and outlet hole to extinguish the fire location. The liquid level meter 20 is arranged on the liquid storage unit 10. In the embodiment of the present application, the fire extinguishing agent may be but is not limited to heptafluoropropane or perfluoropropane.

[0042] The liquid level meter 20 includes a housing assembly 21, a connecting assembly 22, a sensor assembly 23 and a display assembly 24. The housing assembly 21 is provided with an installation space. The housing assembly 21 is provided with an observation hole 100 which is in communication with the installation space. The connecting assembly 22 is provided on the housing assembly 21 and is partially exposed from the housing assembly 21. The sensor assembly 23 is detachably connected to the connecting assembly 22, and the sensor assembly 23 is configured to be connected to the liquid storage unit 10 and monitor the liquid level information of the liquid storage unit 10. The sensor assembly 23 may be, but is not limited to, a pressure type liquid level sensor assembly or a capacitive type liquid level sensor assembly. The sensor assembly 23 can be plugged into the monitoring hole to connect the liquid level meter 20 to the liquid storage unit 10. The sensor assembly 23 can extend below the liquid level of the fire extinguishing agent in the liquid storage chamber to monitor the liquid level information.

[0043] In the embodiment of the present application, the sensor assembly 23 is a capacitive liquid level sensor assembly. The capacitive liquid level sensor assembly measures the liquid level by measuring the change in capacitance. The capacitive liquid level sensor assembly is a metal rod inserted into the liquid storage cavity, the metal rod serves as one pole of the capacitor, and the outer shell of the liquid storage unit 10 serves as the other pole of the capacitor. The capacitive liquid level sensor assembly can measure the liquid level by the change in capacitance between the two electrodes to obtain liquid level information.

[0044] The display assembly 24 is installed in the installation space. The display assembly 24 has a display area arranged opposite to the observation hole 100. The display assembly 24 is electrically connected to the sensor assembly 23 through the connecting assembly 22. The display assembly 24 is configured to display the liquid level information in the display area. The liquid level information obtained by the sensor assembly 23 is transmitted to the display assembly 24 through the connecting assembly 22 and displayed in the display area. The liquid level information may be a capacitance value or a liquid level height value converted from the capacitance value. When the liquid level is lower than the warning value, the display area may also display an alarm message to prompt the replacement of the liquid storage unit 10 or the filling and replenishment of the liquid storage unit 10 to ensure that a sufficient amount of fire extinguishing agent is stored in the liquid storage unit 10 when a fire occurs. During the filling and replenishment process, the liquid level meter 20 can monitor the liquid level information in real time to prevent the fire extinguishing agent from being overcharged. The alarm information includes but is not limited to a change in the color of the display area or a flashing of the display area.

[0045] In summary, the implementation of the embodiment of the present application will have the following beneficial effects: the liquid level meter 20 of the above scheme is applied to the fire extinguishing equipment, which not only enables the fire extinguishing equipment to have excellent liquid level monitoring efficiency, but also can improve the versatility of the liquid level meter 20. Specifically, the liquid level meter 20 includes a housing assembly 21 provided with an installation space and an observation hole 100, a connection assembly 22 provided on the housing assembly 21 and partially exposed from the housing assembly 21, a sensor assembly 23, and a display assembly 24 installed in the installation space. Among them, the sensor assembly 23 is detachably connected to the connection assembly 22, and the sensor assembly 23 is configured to be connected to the liquid storage unit 10 and monitor the liquid level information of the liquid storage unit 10. In this way, the type of the sensor assembly 23 can be easily replaced, so that according to the model of the liquid storage unit 10, the sensor assembly 23 that is adapted to the installation position of the liquid level meter 20 located on the liquid storage unit 10 and the liquid storage depth and volume can be selected, so as to facilitate the adaptation of different models of liquid storage units 10 by replacing the type of the sensor assembly 23. Furthermore, since other components of the liquid level meter 20 except the sensor assembly 23 do not need to be replaced according to the model of the liquid storage unit 10, replacement costs are saved and the versatility of other components of the liquid level meter 20 except the sensor assembly 23 is improved.

[0046] In an exemplary embodiment, please combine Figure 4 and Figure 5 The sensor assembly 23 includes a first joint 231 and a liquid level rod 232, and the first joint 231 includes a connecting portion 2311 and a plug-in portion 2312. The connecting portion 2311 is detachably connected to the connecting assembly 22 to facilitate replacement of the type of the sensor assembly 23. The connecting portion 2311 is connected to the liquid level rod 232 through the plug-in portion 2312, and the plug-in portion 2312 can be connected to one end of the liquid level rod 232 or the plug-in portion 2312 can be at least partially sleeved on the liquid level rod 232.

[0047] The plug-in portion 2312 is configured to be plugged into the monitoring hole on the liquid storage unit 10, so that the liquid level meter 20 can be connected to the liquid storage unit 10, and the liquid level rod 232 can be extended below the liquid level of the fire extinguishing agent in the liquid storage chamber. The outer diameter of the plug-in portion 2312 decreases in a step-by-step manner from the connecting portion 2311 to the liquid level rod 232. Since the connection method between the liquid level meter 20 and the monitoring hole is generally plug-in, and the monitoring holes of different types of liquid storage units 10 have different diameters, the outer diameter of the plug-in portion 2312 is configured to decrease in a step-by-step manner from the connecting portion 2311 to the liquid level rod 232, so that the liquid level meter 20 can adapt to monitoring holes of different diameters when connected to the liquid storage unit 10, further improving the versatility of the liquid level meter 20, and can adapt to different types of liquid storage units 10 when the liquid storage depth requirements are the same. When the liquid storage depth requirements change, it is necessary to replace the liquid level rod 232 of different lengths according to the specific liquid storage depth requirements.

[0048] In addition, in some exemplary embodiments, the plug-in portion 2312 can be made of an elastic material, so that the plug-in portion 2312 can be interference-fitted with the liquid storage unit 10, thereby improving the connection stability between the liquid level meter 20 and the liquid storage unit 10. Moreover, the outer diameter of the plug-in portion 2312 can adapt to the diameter of the monitoring hole by elastic deformation while changing in a step-like manner, thereby further improving the ability of the liquid level meter 20 to adapt to monitoring holes of different diameters.

[0049] In the embodiment of the present application, the differences in the types of sensor components 23 include but are not limited to differences in any one of the shapes, sizes or materials of the first joint 231 and differences in any one of the shapes, sizes or materials of the liquid level rod 232 .

[0050] In an exemplary embodiment, please combine Figure 1 and Figure 5 , a driving portion 2313 is convexly provided on the outer wall of the plug-in portion 2312, and the driving portion 2313 is configured to drive the sensor assembly 23 to move under the action of an external force. In this way, by configuring the driving portion 2313, the sensor assembly 23 can be conveniently driven when the sensor assembly 23 is separated from the connecting assembly 22, so that the sensor assembly 23 can be fixed or separated from the liquid storage unit 10. The driving portion 2313 convexly provided on the plug-in portion 2312 can also prevent the sensor assembly 23 from falling into the liquid storage cavity through the monitoring hole. In the embodiment of the present application, the driving portion 2313 has a nut surface to facilitate the adaptation of existing nut tightening tools.

[0051] In an exemplary embodiment, please combine Figure 2 , Figure 3 and Figure 5 , the connection component 22 includes a connector 221 and a wire 222, and the wire 222 is electrically connected between the display component 24 and the connector 221 to ensure the stability of the electrical connection between the display component 24 and the connector 221. In addition, the shape of the wire 222 is variable and can adapt to different spacings between the display component 24 and the connector 221. The connector 221 is connected to the housing component 21 and has a mounting hole 200 exposed to the housing component 21, and the connecting portion 2311 is plugged into the mounting hole 200. In this way, the connection area between the connector 221 and the connecting portion 2311 can be increased by setting the mounting hole 200, thereby improving the connection stability and ensuring the stability of the electrical connection. In addition, in some exemplary embodiments, an insulating structure can be provided at the connection position between the connector 221 and the housing component 21 to prevent current from being transferred to the housing component 21.

[0052] In an exemplary embodiment, please combine Figure 1 and Figure 5The connecting member 221 is slidably connected to the housing assembly 21, and the connecting member 22 can slide relative to the housing assembly 21 to change the size of the connecting member 221 exposed from the housing assembly 21. In this way, the position of the housing assembly 21 relative to the liquid storage unit 10 can be adjusted through the above arrangement to facilitate the installation of the liquid level meter 20. A first gasket 223 is also arranged between the connecting member 221 and the housing assembly 21 to enhance the anti-vibration effect between the connecting member 221 and the housing assembly 21.

[0053] The connecting member 221 is rotatably connected to the housing assembly 21, so that after the liquid level meter 20 is connected to the liquid storage unit 10, the housing assembly 21 can rotate relative to the liquid storage unit 10 to facilitate the display area to be rotated to a position convenient for observation. The connecting member 221 and the housing assembly 21 may be interference fit to fix the position between the connecting member 221 and the housing assembly 21. In addition, in some exemplary embodiments, the position between the connecting member 221 and the housing assembly 21 can also be fixed by a locking structure after the position adjustment is completed.

[0054] In an exemplary embodiment, please combine Figure 2 , Figure 3 and Figure 5 The connecting member 221 has a circumferential wall 2211 that encloses the mounting hole 200. The connecting assembly 22 also includes a locking member 224. The locking member 224 is connected to the circumferential wall 2211 and can drive the circumferential wall 2211 to clamp the connecting portion 2311. This can further improve the connection stability between the connecting member 221 and the connecting portion 2311, and by driving the locking member 224, the connecting member 221 and the connecting portion 2311 can be quickly disassembled and assembled.

[0055] In an exemplary embodiment, please combine Figure 4 and Figure 6 The display component 24 includes a display panel 241, a circuit board 242 and a power supply unit 243. The display area is located on the display panel 241. The connection component 22, the display panel 241 and the power supply unit 243 are electrically connected through the circuit board 242. The power supply unit 243 is configured to supply power to the display panel 241 and the sensor component 23. Among them, the display panel 241 can be but is not limited to an LED display panel, an LCD display panel, an OLED display panel, a TN display panel, a VA display panel or an IPS display panel. The display panel 241 is arranged on the circuit board 242 and is connected to the housing component 21 through the circuit board 242. The power supply unit 243 is a primary battery or a rechargeable battery, so that the liquid level meter 20 can be used without an external power supply, which simplifies the installation process of the liquid level meter 20. The liquid level meter 20 does not require an external power supply, which improves the portability and flexibility of the liquid level meter 20.

[0056] In an exemplary embodiment, please combine Figure 4 and Figure 6 , the liquid level meter 20 also includes a signal transceiver component 25, which is electrically connected to the circuit board 242 and is configured to transmit the liquid level information to the outside and receive the control signal to control the liquid level meter 20. In this way, remote liquid level information display and control of the liquid level meter 20 can be achieved. In the embodiment of the present application, the signal transceiver component 25 includes an antenna 251 and a second connector 252, and the antenna 251 is electrically connected to the circuit board 242 and is arranged on the housing component 21 through the second connector 252. A second gasket 253 is also arranged between the second connector 252 and the housing component 21 to enhance the anti-vibration effect between the signal transceiver component 25 and the housing component 21. The signal transceiver component 25 can realize data exchange between the liquid level meter 20 and the outside world, complete the conversion of the data communication protocol, so as to ensure normal operation and be able to monitor the liquid level information of the liquid storage unit 10 in real time, and supervise and operate the liquid level information. The alarm information can also be converted into an electrical signal and transmitted to the outside world through the signal transceiver component 25. The liquid level meter 20 can collect and transmit liquid level information in real time, so that the liquid level display is accurate; there is no need for manual recording and calculation, which reduces the workload of staff and improves work efficiency. In addition, through the wireless network, information can be interconnected between different fire extinguishing agent filling equipment and the liquid level meter 20, which is convenient for centralized management and control. It can simplify the management and control work during the filling process, improve work efficiency, reduce labor costs, and ensure safety.

[0057] The liquid level meter 20 further includes a reset component 26, which is electrically connected to the circuit board 242 and is configured to reset the liquid level meter 20. The reset component 26 includes a button 261 and a fixing member 262, and the button 261 is connected to the housing component 21 through the fixing member 262. The liquid level meter 20 is reset by pressing the button 261. In addition, the reset of the liquid level meter 20 can also be achieved by receiving a control signal through the signal transceiver component 25.

[0058] In an exemplary embodiment, the liquid level meter 20 can perform local manual zero point calibration, and can also perform zero point calibration by receiving a zero point calibration signal through the signal transceiver component 25.

[0059] In an exemplary embodiment, the liquid level meter 20 can obtain the mass of the fire extinguishing agent in the liquid storage chamber by calculation. The calculation formula is as follows:

[0060] m=ρV, V=S×h, where m is the mass of the fire extinguishing agent; ρ is the density of the fire extinguishing agent; V is the volume of the fire extinguishing agent; S is the cross-sectional area of ​​the liquid storage chamber; and h is the liquid level height.

[0061] In an exemplary embodiment, please combine Figure 3 , Figure 4 and Figure 6The housing assembly 21 includes a transparent member 211, an upper cover 212, a bottom cover 213, and an annular wall 214 located between the upper cover 212 and the bottom cover 213. The annular wall 214 is detachably connected to at least one of the upper cover 212 and the bottom cover 213 and is clamped with a seal. The upper cover 212, the bottom cover 213, and the annular wall 214 enclose an installation space. In this way, the display assembly 24 can be conveniently installed by detachably connecting the annular wall 214 to at least one of the upper cover 212 and the bottom cover 213, and the sealing of the housing assembly 21 can be ensured by setting a seal. In the embodiment of the present application, the annular wall 214 is detachably connected to both the upper cover 212 and the bottom cover 213, and a seal is clamped between the annular wall 214 and the upper cover 212 and the bottom cover 213.

[0062] The observation hole 100 is set in the upper cover 212, and the transparent member 211 can cover the observation hole 100 and be clamped between the upper cover 212 and the display area. In this way, the transparent member 211 can ensure the sealing of the housing assembly 21, and at the same time facilitate observation of the display area. The transparent member 211 can be, but is not limited to, a glass plate or an acrylic plate. The material of the upper cover 212, the bottom cover 213 and the annular wall 214 can be stainless steel.

[0063] In the description of the present application, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "relative", "four corners", "periphery", "'mouth'-shaped structure" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0064] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "assembly" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", and "fixed connection" can be a direct connection, or an indirect connection through an intermediate medium, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0065] Although the embodiments disclosed in the present application are as above, the contents described are only embodiments adopted for facilitating the understanding of the present application, and are not intended to limit the present application. It should be noted that the above embodiments or embodiments are merely exemplary, and not restrictive. Therefore, the present disclosure is not limited to the contents specifically shown and described herein. Various modifications, substitutions or omissions may be made to the forms and details of implementation without departing from the scope of the present disclosure.

Claims

1. A liquid level meter, characterized in that: include: The housing assembly is provided with an installation space, and the housing assembly is provided with an observation hole communicating with the installation space; A connecting component, arranged on the housing component and partially exposed from the housing component; A sensor assembly is detachably connected to the connecting assembly, and the sensor assembly is configured to be connected to the liquid storage unit and monitor the liquid level information of the liquid storage unit; as well as A display component is installed in the installation space, wherein the display component has a display area arranged opposite to the observation hole, the display component is electrically connected to the sensor component through the connecting component, and the display component is configured to display the liquid level information in the display area.

2. The liquid level meter according to claim 1, characterized in that: The sensor assembly includes a first joint and a liquid level rod, the first joint includes a connecting part and a plug-in part, the connecting part is detachably connected to the connecting assembly, the connecting part is connected to the liquid level rod through the plug-in part, the plug-in part is configured to be pluggable with a monitoring hole located on the liquid storage unit, and the outer diameter of the plug-in part decreases in a step-like manner from the connecting part to the liquid level rod.

3. The liquid level meter according to claim 2, characterized in that: A driving portion is protrudingly provided on the outer wall of the plug-in portion, and the driving portion is configured to drive the sensor assembly to move under the action of an external force.

4. The liquid level meter according to claim 2, characterized in that: The connecting component includes a connecting member and a wire, the wire is electrically connected between the display component and the connecting member, the connecting member is connected to the shell component and has a mounting hole exposed to the shell component, and the connecting part is plugged into the mounting hole.

5. The liquid level meter according to claim 4, characterized in that: The connecting member is slidably connected to the housing assembly, and the connecting assembly can slide relative to the housing assembly to change the size of the connecting member exposed from the housing assembly; and / or The connecting member is rotatably connected to the housing assembly.

6. The liquid level meter according to claim 5, characterized in that: The connecting member has a circumferential wall surrounding the mounting hole, and the connecting assembly also includes a locking member, which is connected to the circumferential wall and can drive the circumferential wall to clamp the connecting portion.

7. The liquid level meter according to claim 1, characterized in that: The display component includes a display panel, a circuit board and a power supply unit. The display area is located on the display panel. The connection component, the display panel and the power supply unit are electrically connected through the circuit board. The power supply unit is configured to supply power to the display panel and the sensor component.

8. The liquid level meter according to claim 7, characterized in that: The liquid level meter further comprises a signal transceiver component, which is electrically connected to the circuit board and is configured to transmit the liquid level information to the outside and receive a control signal to control the liquid level meter; and / or The liquid level meter also includes a reset component, which is electrically connected to the circuit board and is configured to reset the liquid level meter.

9. The liquid level meter according to claim 7, characterized in that: The housing assembly comprises a transparent member, an upper cover, a bottom cover, and an annular wall located between the upper cover and the bottom cover, wherein the annular wall is detachably connected to at least one of the upper cover and the bottom cover and holds a sealing member; The upper cover, the bottom cover and the annular wall together enclose the installation space. The observation hole is arranged on the upper cover. The transparent member can cover the observation hole and is clamped between the upper cover and the display area.

10. A fire extinguishing device, characterized in that: include: A liquid storage unit, comprising a liquid storage cavity and a monitoring hole communicated with the liquid storage cavity; as well as The liquid level gauge according to any one of claims 1 to 9, wherein the liquid level gauge is arranged on the liquid storage unit.

Images