Gas detector

Abstract

The utility model discloses a fuel gas detector, which comprises a shell, a detector body, a detection tube and a detection probe, and is characterized in that an accommodating cavity is formed in the shell; the detector body is mounted in the accommodating cavity, and a concentration threshold value of methane is preset in the detector body; the detection tube is arranged outside the shell, and one end of the detection tube extends into the accommodating cavity; the detection probes are arranged at one end, far away from the shell, of the detection pipe, and the multiple detection probes are arranged at intervals and are used for independently detecting the to-be-detected gas. The utility model provides a fuel gas detector which solves the problem that the detection result of an existing detector is not accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection, in particular to a gas detector. Background Art

[0002] With the continuous development of science and technology, existing households generally use natural gas as the main fuel for gas stoves and water heaters. During use, safety performance is the main consideration. The function of general gas alarms is mostly to use gas sensors to detect gas and feed back abnormal data to the sound and light alarm device and the gas solenoid valve.

[0003] However, existing detectors usually only have one detection probe for detecting indoor natural gas, and the detection value is also unique, which can easily lead to inaccurate or erroneous detection results, thereby causing the gas detector to erroneously transmit warning information. Utility Model Content

[0004] The main purpose of the utility model is to provide a gas detector, aiming to solve the problem of inaccurate detection results of existing detectors.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a gas detector, which comprises:

[0006] A housing having an accommodating cavity formed therein;

[0007] A detector body is installed in the accommodating cavity, and the detector body is preset with a methane concentration threshold;

[0008] A detection tube is disposed outside the housing, and one end of the detection tube extends into the accommodating cavity; and

[0009] The detection probe is arranged at one end of the detection tube away from the shell. A plurality of the detection probes are arranged at intervals, and the plurality of detection probes are used to detect the gas to be detected independently of each other.

[0010] Optionally, in an embodiment of the present utility model, the gas detector further includes a detection seat, and the detection seat is used to fix the detection tube and the detection probe.

[0011] Optionally, in an embodiment of the present invention, a plurality of the detection probes are detachably spaced apart and arranged at an end of the detection base away from the shell.

[0012] Optionally, in an embodiment of the present utility model, the detection probe includes an extension portion and a detection portion, the extension portion is snap-connected with the detection seat, and the detection portion is fixedly arranged on a side of the extension portion away from the detection seat.

[0013] Optionally, in an embodiment of the present invention, the extension portion is an elastic tube to adjust the distance between the detection portion and the detection seat.

[0014] Optionally, in an embodiment of the present invention, the detection unit is a gas detection sensor.

[0015] Optionally, in an embodiment of the present utility model, the detector body comprises:

[0016] a detection module, disposed in the accommodating cavity and communicatively connected with the detection probe; and

[0017] A data processing module is disposed in the accommodating cavity and is in communication connection with the detection module. The data processing module is provided with the concentration threshold.

[0018] Optionally, in an embodiment of the utility model, the gas detector further includes an alarm device, which is disposed on the housing and is communicatively connected to the data processing module.

[0019] Optionally, in an embodiment of the utility model, a mute switch is further provided on the shell, and the data processing module has a mute key, and when the mute switch is pressed, the mute key is pressed so that the data processing module controls the alarm device to be turned off.

[0020] Optionally, in an embodiment of the present utility model, a display screen is further provided on the outer surface of the shell, and the display screen is electrically connected to the data processing module.

[0021] Optionally, in an embodiment of the present invention, a charging interface is further provided on the shell, and the charging interface is communicatively connected to the detector body.

[0022] Compared with the prior art, the utility model provides a technical solution in which the gas detector includes a shell, a detector body, a detection tube and a detection probe, wherein the detector body is installed in a receiving cavity inside the shell, one end of the detection tube extends to the inside of the receiving cavity and is connected to the detector body, and the other end is arranged outside the shell and is connected to the detection probe. In order to improve the accuracy of gas detection, the detection probes in this solution are arranged at intervals, and the multiple detection probes are used to detect the concentration of indoor natural gas independently of each other. Each detection probe can convert the detected natural gas concentration into a data signal, and the detection probe is connected to the detector body for communication. The detector body can analyze and process the data signal, thereby calculating the concentration value of methane in the measured natural gas. When the concentration value of methane in the natural gas exceeds the concentration threshold, the detector body can determine whether the natural gas is leaking, and output an abnormal signal when confirming the natural gas leak. In this solution, as long as one of the detection probes detects that the concentration of methane in the natural gas exceeds the concentration threshold, the detector body will output an abnormal signal to prompt the user to close the gas valve in time, thereby improving the accuracy and sensitivity of the gas detector detection, ensuring that the dangerous information of the gas leak is notified to the user in time, and corresponding processing is carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of a gas detector of the utility model;

[0025] Figure 2 This is a partial structural diagram of another embodiment of the gas detector of the utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the shell of another embodiment of the gas detector of the utility model.

[0027] Description of Figure Numbers:

[0028] Label name Label name 100 case 400 Detection probe 110 Silencer switch 410 Testing Department 120 Display 420 Extension 130 Charging port 500 Detection seat 200 Detector body 600 Alarm device 300 Detection tube

[0029] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0034] Existing detectors usually only have one detection probe for detecting indoor natural gas, and the detection value is also unique, which can easily lead to inaccurate or erroneous detection results, and then cause the gas detector to erroneously transmit warning information.

[0035] Based on this, the utility model proposes a gas detector. In this scheme, multiple detection probes are arranged at intervals. The multiple detection probes can be used to detect the concentration of indoor natural gas independently of each other. As long as one of the detection probes detects that the concentration of methane in the natural gas exceeds the concentration threshold, the detector body will send out an abnormal signal, which is beneficial to improve the sensitivity of the gas detector and ensure that the dangerous information of gas leakage is notified to the user in time for corresponding processing.

[0036] like Figure 1 - Figure 3 As shown, the gas detector includes:

[0037] The housing 100 has a receiving cavity formed therein;

[0038] The detector body 200 is installed in the accommodating cavity, and the detector body 200 is preset with a methane concentration threshold;

[0039] The detection tube 300 is disposed outside the housing 100, and one end of the detection tube 300 extends into the accommodating cavity; and

[0040] The detection probe 400 is disposed at one end of the detection tube 300 away from the housing 100 . A plurality of detection probes 400 are disposed at intervals. The plurality of detection probes 400 are used to detect the gas to be detected independently of each other.

[0041] In the technical solution adopted in this embodiment, the gas detector includes a housing 100, a detector body 200, a detection tube 300 and a detection probe 400, wherein the detector body 200 is installed in a receiving cavity inside the housing 100, one end of the detection tube 300 extends to the inside of the receiving cavity and is connected to the detector body 200, and the other end is arranged outside the housing 100 and is connected to the detection probe 400. In order to improve the accuracy of gas detection, a plurality of detection probes 400 in this solution are arranged at intervals, and the plurality of detection probes 400 are used to detect the concentration of indoor natural gas independently of each other. Each detection probe 400 can convert the detected natural gas concentration into a data signal, and the detection probe 400 is connected to the detector body 200 for communication. The detector body 200 can analyze and process the data signal, thereby calculating the concentration value of methane in the measured natural gas. When the concentration value of methane in the natural gas exceeds the concentration threshold, the detector body 200 can determine whether the natural gas is leaking, and output an abnormal signal when confirming the natural gas leak. In this solution, as long as one of the detection probes 400 detects that the concentration of methane in the natural gas exceeds the concentration threshold, the detector body 200 will output an abnormal signal to prompt the user to close the gas valve in time, thereby improving the accuracy of gas detector detection.

[0042] Specifically, there is no specific limitation on the number of detection probes 400, which can be set according to actual needs. Preferably, multiple detection probes 400 are evenly spaced at a specific interval, as long as it is ensured that the gases at the detection positions of the multiple detection probes 400 do not interfere with each other; further preferably, multiple detection probes 400 are provided in a honeycomb shape. There is no specific limitation on the type of the detector body 200, for example, it can be a TO-type laser, a catalytic combustible gas detector, a semiconductor combustible gas detector, and a natural diffusion type combustible gas detector, etc. Specifically, as long as the detection probe 400 can transmit the detected data signal to the microcontroller of the PCB board in the detector body 200, the microcontroller processes and converts it into the concentration of methane.

[0043] Alternatively, if Figure 1 and Figure 2 As shown, in one embodiment of the utility model, in order to further improve the practicality of the detector, the gas detector also includes a detection seat 500, which is located at one end of the detection tube 300 away from the shell 100, and plays an important role in connecting the detection tube 300 and the detection probe 400. It is worth mentioning that the detection seat 500 is cleverly provided with a plurality of detection probes 400 on the side away from the detection tube 300. Such a design not only increases the number of detection probes 400, but also maintains a certain distance between each detection probe 400 and the shell 100. Increasing the number of detection probes 400 means that the detector can cover a wider detection range, thereby increasing the probability of detecting gas leaks. Secondly, since there is a certain distance between the detection probe 400 and the shell 100, the user can more conveniently operate at a position away from the detector without worrying about accidentally touching or interfering with the normal operation of the detector.

[0044] Alternatively, if Figure 2 As shown, in one embodiment of the utility model, multiple detection probes 400 are detachably arranged at intervals at one end of the detection seat 500 away from the housing 100. In this embodiment, there is no specific limitation on the detachable manner of the detection probe 400, for example, it can be a snap-on or threaded connection. Since the detection probe 400 is detachable, it can be flexibly replaced and adjusted according to different detection requirements, further improving the flexibility and efficiency of detection. In addition, when one of the detection probes 400 is damaged and needs to be replaced or repaired, it only needs to be removed from the detection seat 500, without having to replace the entire gas detector, which effectively improves its service life and reduces costs.

[0045] Alternatively, if Figure 2As shown, in one embodiment of the utility model, in order to enable multiple detection probes 400 to detect indoor gas at different positions respectively, the detection probe 400 includes an extension part 420 and a detection part 410, wherein the extension part 420 is firmly clamped together with the detection seat 500 to ensure the stability and reliability of the probe during operation, and the detection part 410 is fixedly arranged on the other side of the extension part 420, and closely cooperates with the extension part 420 to jointly complete the task of indoor gas detection. For example, the extension part 420 can be an extension tube, and the detection part 410 is a gas detection sensor, etc. The extension tube can flexibly adjust the length and angle to adapt to different detection requirements, not only can the detection part 410 be guided to the position to be detected, but also can effectively protect the detection part 410 from interference from the external environment. In addition, in one embodiment of the utility model, the extension part 420 is an elastic tube for adjusting the distance between the detection part 410 and the detection seat 500. In practical applications, a plurality of such detection probes 400 can be deployed at different locations indoors to form a comprehensive gas detection network for real-time detection of indoor air and improving the accuracy of detection results.

[0046] Optionally, in an embodiment of the present utility model, the detector body 200 includes:

[0047] A detection module, disposed in the accommodating cavity and in communication with the detection probe 400; and

[0048] The data processing module is arranged in the accommodating cavity and is in communication connection with the detection module. The data processing module is provided with a concentration threshold.

[0049] Specifically, during the detection process, the detection module can convert the natural gas concentration detected by the detection probe 400 into a data signal and transmit it to the data processing module. For example, the detection probe 400 may include a laser emitting element and a photosensitive element, the laser emitting element and the photosensitive element are arranged oppositely and at intervals, and the laser is arranged in the accommodating cavity. During the detection process, the laser emitting element can emit a fixed wavelength optical signal toward the photosensitive element. When the natural gas enters the detection probe 400, the natural gas can absorb the optical signal, the laser light intensity becomes weaker, and the photosensitive element senses the weakening of the laser light intensity. It can also be understood that when the laser emitting element emits a laser toward the photosensitive element at a certain frequency, the natural gas can absorb light, resulting in a weakening of the laser light intensity. The frequency of the light intensity received by the photosensitive element is different from the frequency of the light intensity emitted by the laser emitting element. The detection module in the laser can convert the frequency difference between the frequency of the optical signal received by the photosensitive element and the frequency of the optical signal emitted by the laser emitting element into a data signal, and can transmit the data signal to the data processing module. The data processing module can analyze and process the data signal, thereby calculating the concentration value of methane in the natural gas at this time, and comparing it with the preset methane concentration threshold.

[0050] Alternatively, if Figure 1 As shown, in one embodiment of the utility model, in order to timely transmit the signal of natural gas leakage to the user, the gas detector also includes an alarm device 600, which is arranged in the housing 100 and is connected to the data processing module. When the data processing module determines that the natural gas is leaking, the data processing module transmits an alarm signal to the alarm device 600 and controls the alarm device 600 to alarm. The alarm device 600 in this embodiment can be a sound alarm module, specifically, the sound alarm module can be a sound alarm. When the alarm device 600 receives the alarm signal of the data processing module, the sound alarm module is controlled to be turned on so that the sound alarm module emits an alarm sound, thereby achieving the effect of the gas detector alerting the user of the natural gas leakage. Preferably, in order to prevent the alarm sound from causing noise to the user, a mute switch 110 can also be provided on the housing 100, and accordingly, the data processing module has a mute key, and when the mute switch 110 is pressed, the mute key is pressed so that the data processing module controls the alarm device 600 to be turned off. The alarm device 600 in this embodiment can also be a light alarm module, which can be an LED light. The LED light can have three different colors, for example, the three different colors can be green, red and yellow, and different colors can represent different states of the gas detector. When the gas detector detects that there is no natural gas leakage, the LED light can emit a flashing green light, and when the gas detector detects that there is a natural gas leakage, the LED light can emit a flashing red light.

[0051] Alternatively, if Figure 1 As shown, in one embodiment of the utility model, in order to timely display the concentration of the gas to be measured, the outer surface of the shell 100 is also provided with a display screen 120, and the display screen 120 is electrically connected to the data processing module for displaying the concentration value of methane in the measured gas in real time to serve as a warning to the user.

[0052] Alternatively, if Figure 1 As shown, in one embodiment of the utility model, in order to charge the detector body 200 in the housing 100, a charging interface 130 is also provided on the housing 100, and the charging interface 130 is communicated and connected with the detector body 200 to ensure its normal operation. It should be pointed out that in order to save energy, a solar panel can also be provided on the housing 100, and the electric energy generated by solar energy can be used to charge the detector body 200, so that resources are effectively utilized.

[0053] The above description is only an optional embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A gas detector, characterized in that: The gas detector comprises: A housing having an accommodating cavity formed therein; A detector body is installed in the accommodating cavity, and the detector body is preset with a methane concentration threshold; A detection tube is disposed outside the housing, and one end of the detection tube extends into the accommodating cavity; and The detection probe is arranged at one end of the detection tube away from the shell. A plurality of the detection probes are arranged at intervals, and the plurality of detection probes are used to detect the gas to be detected independently of each other.

2. The gas detector according to claim 1, characterized in that: The gas detector also includes a detection seat, which is used to fix the detection tube and the detection probe.

3. The gas detector according to claim 2, characterized in that: A plurality of the detection probes are detachably arranged at intervals at one end of the detection seat away from the shell.

4. The gas detector according to claim 3, characterized in that: The detection probe comprises an extension portion and a detection portion, the extension portion is clamped with the detection seat, and the detection portion is fixedly arranged on a side of the extension portion away from the detection seat.

5. The gas detector according to claim 4, characterized in that: The extending portion is an elastic tube to adjust the distance between the detecting portion and the detecting seat; and / or the detecting portion is a gas detecting sensor.

6. The gas detector according to claim 1, characterized in that: The detector body comprises: a detection module, disposed in the accommodating cavity and communicatively connected with the detection probe; and A data processing module is disposed in the accommodating cavity and is in communication connection with the detection module. The data processing module is provided with the concentration threshold.

7. The gas detector according to claim 6, characterized in that: The gas detector further comprises an alarm device, which is arranged on the housing and is communicatively connected with the data processing module.

8. The gas detector according to claim 7, characterized in that: The shell is also provided with a mute switch, and the data processing module has a mute key, and when the mute switch is pressed, the mute key is pressed, so that the data processing module controls the alarm device to be turned off.

9. The gas detector according to any one of claims 6 to 8, characterized in that: The outer surface of the shell is also provided with a display screen, and the display screen is electrically connected to the data processing module.

10. The gas detector according to any one of claims 1 to 8, characterized in that: The shell is also provided with a charging interface, and the charging interface is communicatively connected with the detector body.

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