Alarm probe and industrial alarm

Abstract

The utility model relates to the technical field of combustible gas detectors, and particularly discloses an alarm probe and an industrial alarm. The probe comprises a fixed module and a movable module, the fixing module comprises a probe shell provided with a first containing groove and a socket assembly fixedly installed in the first containing groove. The socket assembly comprises a socket body. The movable module comprises a probe cover and a plug assembly, the probe cover is provided with a probe cover and a second containing groove, the plug assembly is fixedly installed in the second containing groove, the upper end of the plug assembly is provided with a plug body, the plug body is connected with the socket body in a matched and inserted mode, and the probe cover is spliced with the probe shell in a matched mode; a sensor body is arranged at the lower end of the plug assembly, a waterproof breathable film and a sintering piece are stacked between the sensor body and the groove bottom of the second containing groove, the groove bottom of the second containing groove is communicated with the outside through a first communication hole, and the sintering piece shields the first communication hole. According to the probe, through structural improvement, the risk that water enters the probe is reduced, and the replacement operation of the sensor body can be rapidly completed.

Description

Technical Field

[0001] The utility model relates to the technical field of combustible gas detectors, in particular to an alarm probe and an industrial alarm. Background Art

[0002] In the industrial production process, alarm probes, as a combustible gas alarm, are increasingly used in industrial environments where combustible gases exist, to conduct real-time monitoring and alarm of combustible gas concentrations in the industrial environment.

[0003] However, the air inlet of the existing industrial alarm probe only has a metal powder sintered sheet and no waterproof structure, which cannot prevent the entry of water molecules. As a result, the alarm cannot meet the protection level requirements in harsh high-humidity environments, seriously affecting the normal operation of the alarm.

[0004] Moreover, when the life of the alarm sensor expires, the sensor needs to be replaced. At this time, the operator is often required to open the cover of the alarm at the site of use to perform zero adjustment and calibration. Considering that explosion-proof alarms are usually installed in dangerous explosion-proof areas, sparks generated in such areas can cause serious injuries.

[0005] At present, the existing industrial alarms often assemble the sensor circuit board and the probe housing together, which means that when replacing the sensor, the operator needs to open the cover of the alarm to interact with the sensor plug to complete the sensor replacement operation. When opening the cover on site for zeroing and calibration, the operator is prone to cause internal circuit short circuit due to misoperation, which in turn generates sparks, making the work extremely dangerous. Utility Model Content

[0006] The utility model aims to provide an alarm probe and an industrial alarm, so as to realize the protection of the probe part and reduce the risk of water molecules entering the inside of the probe; and the sensor body can be replaced quickly and independently without cutting off the power supply and opening the cover.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] The alarm probe comprises a fixed module and a movable module; the fixed module comprises a probe shell and a socket assembly, the probe shell is provided with a first accommodating groove opening downward, the socket assembly is fixedly installed in the first accommodating groove, and the socket assembly comprises a socket body; the movable module comprises a probe cover and a plug assembly, the probe cover is provided with a second accommodating groove opening upward, the plug assembly is fixedly installed in the second accommodating groove, the upper end of the plug assembly is provided with a plug body, the plug body is matched and plugged with the socket body, the probe cover is matched and spliced ​​with the probe shell, so that the first accommodating groove and the second accommodating groove form a protective cavity; the lower end of the plug assembly is provided with a sensor body, a waterproof and breathable membrane and a sintered sheet are stacked from top to bottom between the sensor body and the bottom of the second accommodating groove, the bottom of the second accommodating groove is connected with the outside through a first connecting hole, and the sintered sheet blocks the first connecting hole.

[0009] As an optional technical solution for the alarm probe, the movable module also includes a sintered sheet clamping ring, which is superimposed on the waterproof breathable membrane, the axis of the sintered sheet clamping ring coincides with the axis of the first connecting hole, and the opening of the sintered sheet clamping ring gradually expands from top to bottom.

[0010] As an optional technical solution for the alarm probe, the bottom end of the opening of the sintered sheet clamping ring has a chamfer.

[0011] As an optional technical solution for the alarm probe, the movable module also includes an EVA foam ring, the EVA foam ring is sleeved on the sensor body, and the EVA foam ring is clamped between the plug assembly and the sintered sheet clamping ring.

[0012] As an optional technical solution for the alarm probe, one of the socket assembly and the plug assembly is convexly provided with a plurality of positioning posts, and the other is concavely provided with positioning grooves, the number of the positioning grooves is the same as that of the positioning posts and they correspond one to one, and the positioning posts are matched and inserted into the positioning grooves.

[0013] As an optional technical solution for the alarm probe, the sintered sheet is a stainless steel metal powder sintered sheet, and the thickness of the sintered sheet is 20 microns.

[0014] As an optional technical solution for the alarm probe, the protection grade of the waterproof breathable membrane is IP67.

[0015] As an optional technical solution for the alarm probe, the bottom of the second accommodating groove is connected to the outside through a second connecting hole, and the second connecting hole is filled with epoxy resin glue.

[0016] As an optional technical solution for the alarm probe, the socket assembly also includes a socket fixing cover and a socket circuit board body, the socket circuit board body is fixedly connected to the socket fixing cover, the socket body is inserted into the socket fixing cover, and the socket body is electrically connected to the socket circuit board body; and / or the plug assembly also includes a sensor circuit board fixing cover, a sensor circuit board fixing shell and a sensor circuit board body, the sensor circuit board fixing cover and the sensor circuit board fixing shell are spliced ​​to form an installation cavity, the sensor circuit board body is arranged in the installation cavity, the plug body is inserted into the sensor circuit board fixing shell, and the plug body is electrically connected to the sensor circuit board body, the sensor body is inserted into the sensor circuit board fixing cover, and the sensor body is electrically connected to the sensor circuit board body.

[0017] An industrial alarm includes the above-mentioned alarm probe.

[0018] Beneficial effects of the utility model:

[0019] The alarm probe adopts the design of a protective cavity surrounded by the first accommodating groove and the second accommodating groove, which effectively protects the socket assembly and the plug assembly, and meets the explosion-proof requirements; after the monitoring gas enters the alarm probe from the first connecting hole, it needs to pass through the combined structure of the waterproof breathable membrane and the sintered sheet, which can not only buffer the airflow of the monitoring gas, but also block the external water molecules outside the probe, thereby ensuring the normal operation of the alarm probe and the accuracy of the monitoring data. The above structure not only meets the protection level requirements of the alarm probe in a high humidity environment, but also ensures the normal operation of the alarm probe, which helps to ensure that the alarm probe has good sensitivity in high-speed airflow testing, solves the pain point of airflow impacting the sensor during testing, and also significantly increases the response sensitivity and accuracy of the alarm probe to the monitoring gas. With the design of the plug body and the socket body being pluggable and connected inside the alarm probe, when the operator replaces the sensor body, he only needs to unplug the plug assembly and replace it with a new one, without opening the cover. The above improvements simplify the operation steps, reduce the workload of the operator, and enable the sensor body to be replaced quickly and independently without disconnecting the power supply to the alarm probe and opening the cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of the alarm probe provided by the embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a socket assembly provided by an embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of a plug assembly provided in an embodiment of the utility model.

[0023] In the figure:

[0024] 1. Probe shell; 2. Socket fixing cover; 201. Positioning groove; 3. Socket circuit board body; 4. Socket body; 5. Plug body; 6. Sensor circuit board fixing cover; 7. Sintered sheet clamp; 701. Chamfer; 8. Sintered sheet; 9. Sensor circuit board fixing shell; 901. Positioning column; 10. Sensor circuit board body; 11. EVA foam ring; 12. Waterproof breathable membrane; 13. Epoxy resin glue; 14. Probe cover; 141. First connecting hole; 15. Sensor body. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] like Figures 1 to 3 As shown, this embodiment provides an alarm probe, including a fixed module and a movable module; the fixed module includes a probe shell 1 and a socket assembly, the probe shell 1 is provided with a first accommodating groove opening downward, the socket assembly is fixedly installed in the first accommodating groove, and the socket assembly includes a socket body 4; the movable module includes a probe cover 14 and a plug assembly, the probe cover 14 is provided with a second accommodating groove opening upward, the plug assembly is fixedly installed in the second accommodating groove, the upper end of the plug assembly is provided with a plug body 5, the plug body 5 is matched and plugged with the socket body 4, the probe cover 14 is matched and spliced ​​with the probe shell 1, so that the first accommodating groove and the second accommodating groove form a protective cavity; the lower end of the plug assembly is provided with a sensor body 15, a waterproof and breathable membrane 12 and a sintered sheet 8 are stacked from top to bottom between the sensor body 15 and the bottom of the second accommodating groove, the bottom of the second accommodating groove is connected to the outside through a first connecting hole 141, and the sintered sheet 8 blocks the first connecting hole 141.

[0030] The alarm probe adopts the design of a protective cavity surrounded by the first accommodating groove and the second accommodating groove, which effectively protects the socket assembly and the plug assembly, and meets the requirements of explosion-proof; after the monitoring gas enters the alarm probe from the first connecting hole 141, it needs to pass through the combined structure of the waterproof breathable membrane 12 and the sintered sheet 8, which can buffer the airflow of the monitoring gas and block the external water molecules outside the probe, thereby ensuring the normal operation of the alarm probe and the accuracy of the monitoring data. The above structure not only meets the protection level requirements of the alarm probe in a high humidity environment, but also ensures the normal operation of the alarm probe, which helps to ensure that the alarm probe has good sensitivity in high-speed airflow testing, solves the pain point of airflow impacting the sensor during testing, and significantly increases the response sensitivity and accuracy of the alarm probe to the monitoring gas. With the design of the plug body 5 and the socket body 4 being pluggable and connected inside the alarm probe, the operator only needs to unplug the plug assembly and replace it with a new one when replacing the sensor body 15, without the need to open the cover. The above improvements simplify the operation steps, reduce the workload of the operator, and enable the replacement operation of the sensor body 15 to be completed quickly and independently without disconnecting the power supply to the alarm probe and opening the cover.

[0031] In this embodiment, the monitoring gas is methane. In other implementations of this embodiment, the monitoring gas is other gases, and the type of gas is determined according to the actual engineering of the specific working scene, and will not be elaborated here.

[0032] In this embodiment, the active module further includes a sintered sheet clamp ring 7, which is stacked on the waterproof breathable membrane 12, and the axis of the sintered sheet clamp ring 7 coincides with the axis of the first connecting hole 141, and the opening of the sintered sheet clamp ring 7 gradually expands from top to bottom. The sintered sheet clamp ring 7 is provided to help optimize the flow trajectory of the monitoring gas, and to facilitate guiding the monitoring gas to flow to the sensor body 15, thereby helping to improve the detection sensitivity of the alarm probe; and the design of the opening of the sintered sheet clamp ring 7 gradually expanding from top to bottom can speed up the rapid discharge of the monitoring gas, thereby speeding up the flow of the monitoring gas.

[0033] Furthermore, the bottom end of the opening of the sintered sheet clamp 7 has a chamfer 701. Specifically, the chamfer 701 is a C2.5 chamfer. The setting of the chamfer 701 can ensure that the monitoring gas can be discharged quickly, thereby speeding up the flow of the monitoring gas, which helps to further improve the detection sensitivity of the alarm probe.

[0034] Exemplarily, the active module also includes an EVA foam ring 11, which is sleeved on the sensor body 15, and the EVA foam ring 11 is clamped between the plug assembly and the sintered sheet clamp 7. The EVA foam ring 11 can ensure that the monitoring gas directly enters the sensor body 15, thereby ensuring that the sensor body 15 can respond quickly to the monitoring gas, which helps to further improve the detection sensitivity of the alarm probe. At the same time, the EVA foam ring 11 is clamped between the plug assembly and the sintered sheet clamp 7 to define the location of the EVA foam ring 11 in the protective cavity. The clamping and positioning matching method reduces the risk of relative displacement between the components due to accidents, and ensures the long-term stable operation of the alarm probe.

[0035] For example, the sintered sheet 8 is a stainless steel metal powder sintered sheet, and the thickness of the sintered sheet 8 is 20 microns; the protection level of the waterproof breathable membrane 12 is IP67. According to the above specific definitions, the working effect of the sintered sheet 8 and the waterproof breathable membrane 12 can be improved, and while ensuring the smooth buffering of the airflow of the monitored gas, the water molecules in the airflow are blocked outside the probe, thereby ensuring the normal operation of the alarm probe.

[0036] Exemplarily, the bottom of the second accommodating groove is connected to the outside through the second connecting hole, and the second connecting hole is filled with epoxy resin glue 13. Specifically, the epoxy resin glue 13 is formed by glue pouring. The design of sealing the second connecting hole with epoxy resin glue 13 can ensure the explosion-proof effect of the alarm probe.

[0037] In one implementation of the present embodiment, the socket assembly further includes a socket fixing cover 2 and a socket circuit board body 3, the socket circuit board body 3 is fixedly connected to the socket fixing cover 2, the socket body 4 is connected to the socket fixing cover 2, and the socket body 4 is electrically connected to the socket circuit board body 3; in another implementation of the present embodiment, the plug assembly further includes a sensor circuit board fixing cover 6, a sensor circuit board fixing shell 9 and a sensor circuit board body 10, the sensor circuit board fixing cover 6 and the sensor circuit board fixing shell 9 are spliced ​​to form an installation cavity, the sensor circuit board body 10 is arranged in the installation cavity, the plug body 5 is connected to the sensor circuit board fixing shell 9, and the plug body 5 is electrically connected to the sensor circuit board body 10, the sensor body 15 is connected to the sensor circuit board fixing cover 6, and the sensor body 15 is electrically connected to the sensor circuit board body 10. In another implementation of the present embodiment, the socket assembly further includes a socket fixing cover 2 and a socket circuit board body 3, and the plug assembly further includes a sensor circuit board fixing cover 6, a sensor circuit board fixing shell 9 and a sensor circuit board body 10. The above limitations meet the fixing requirements for the socket body 4 and the plug body 5, help to achieve accurate positioning of the socket assembly and the plug assembly during plugging and unplugging, help to ensure the structural stability of the socket assembly and the plug assembly, and ensure the long-term stable operation of the alarm probe.

[0038] In this embodiment, one of the socket assembly and the plug assembly is provided with a plurality of positioning posts 901, and the other is provided with a positioning groove 201, the number of the positioning grooves 201 and the positioning posts 901 are the same and correspond to each other, and the positioning posts 901 are matched and plugged into the positioning grooves 201. Specifically, the positioning posts 901 are provided on the sensor circuit board fixing shell 9, and the positioning grooves 201 are provided on the socket fixing cover 2.

[0039] With the help of the detachable plug-in cooperation between the positioning column 901 and the positioning groove 201, accurate plugging and unplugging between the plug assembly and the socket assembly can be achieved, thereby ensuring the smooth positioning between the fixed module and the movable module, improving the connection stability between the fixed module and the movable module, and reducing the difficulty of replacing the sensor body 15.

[0040] This embodiment also provides an industrial alarm, including the above-mentioned alarm probe. The industrial alarm with the above-mentioned alarm probe has good explosion-proof capability and ultra-high protection level. The industrial alarm can be used as a point-type combustible gas detector for industrial and commercial purposes, or a catalytic combustion industrial alarm for industrial and commercial purposes.

[0041] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Alarm probe, characterized in that, include: A fixed module, comprising a probe housing (1) and a socket assembly, wherein the probe housing (1) is provided with a first accommodating groove opening downward, the socket assembly is fixedly installed in the first accommodating groove, and the socket assembly comprises a socket body (4); The active module comprises a probe cover (14) and a plug assembly, wherein the probe cover (14) is provided with a second receiving groove opening upward, the plug assembly is fixedly installed in the second receiving groove, the upper end of the plug assembly is provided with a plug body (5), the plug body (5) is matched and plugged with the socket body (4), the probe cover (14) is matched and spliced ​​with the probe shell (1), so that the first receiving groove and the second receiving groove form a protective cavity; the lower end of the plug assembly is provided with a sensor body (15), a waterproof and breathable membrane (12) and a sintered sheet (8) are stacked from top to bottom between the sensor body (15) and the bottom of the second receiving groove, the bottom of the second receiving groove is connected to the outside through a first connecting hole (141), and the sintered sheet (8) blocks the first connecting hole (141).

2. The alarm probe according to claim 1, characterized in that: The movable module further comprises a sintered sheet clamping ring (7), the sintered sheet clamping ring (7) being stacked on the waterproof breathable membrane (12), the axis of the sintered sheet clamping ring (7) coinciding with the axis of the first connecting hole (141), and the opening of the sintered sheet clamping ring (7) gradually expanding from top to bottom.

3. The alarm probe according to claim 2, characterized in that: The bottom end of the opening of the sintered sheet clamping ring (7) has a chamfer (701).

4. The alarm probe according to claim 2, characterized in that: The movable module further comprises an EVA foam ring (11), the EVA foam ring (11) is sleeved on the sensor body (15), and the EVA foam ring (11) is clamped between the plug assembly and the sintered sheet clamping ring (7).

5. The alarm probe according to claim 1, characterized in that: One of the socket assembly and the plug assembly is provided with a plurality of locating posts (901) protrudingly, and the other is provided with a locating groove (201) concavely, the locating grooves (201) are the same in number as the locating posts (901) and correspond one to one, and the locating posts (901) are matched and plugged into the locating grooves (201).

6. The alarm probe according to claim 1, characterized in that: The sintered sheet (8) is a stainless steel metal powder sintered sheet, and the thickness of the sintered sheet (8) is 20 microns.

7. The alarm probe according to claim 1, characterized in that: The protection grade of the waterproof and breathable membrane (12) is IP67.

8. The alarm probe according to claim 1, characterized in that: The bottom of the second containing groove is connected to the outside through a second connecting hole, and the second connecting hole is filled with epoxy resin glue (13).

9. The alarm probe according to any one of claims 1 to 8, characterized in that: The socket assembly further comprises a socket fixing cover (2) and a socket circuit board body (3), wherein the socket circuit board body (3) is fixedly connected to the socket fixing cover (2), the socket body (4) is inserted into the socket fixing cover (2), and the socket body (4) is electrically connected to the socket circuit board body (3); and / or The plug assembly further comprises a sensor circuit board fixing cover (6), a sensor circuit board fixing shell (9) and a sensor circuit board body (10); the sensor circuit board fixing cover (6) and the sensor circuit board fixing shell (9) are spliced ​​to form an installation cavity; the sensor circuit board body (10) is arranged in the installation cavity; the plug body (5) is connected to the sensor circuit board fixing shell (9), and the plug body (5) is electrically connected to the sensor circuit board body (10); the sensor body (15) is connected to the sensor circuit board fixing cover (6), and the sensor body (15) is electrically connected to the sensor circuit board body (10).

10. Industrial alarm, characterized in that, It comprises the alarm probe as described in any one of claims 1 to 9.

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