CN219039026U

CN219039026U - Gas detector with sensor over-concentration protection

Info

Publication number: CN219039026U
Application number: CN202221707775.9U
Authority: CN
Inventors: 郭亮; 孟维琦; 王俊花; 宋立景
Original assignee: Shandong Qianneng Technology Innovation Co ltd
Current assignee: Shandong Qianneng Technology Innovation Co ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2023-05-16
Anticipated expiration: 2032-07-04

Abstract

The utility model discloses a gas detector with a sensor over-concentration protection, which relates to the technical field of flammable gas detection and comprises a mounting frame and a gas detector body, wherein the gas detector body comprises a detector display end and a detector sensing end, the gas detector body is mounted on the mounting frame, a controller and a timer are mounted on one side of the mounting frame, the timer is electrically connected with the controller, a first contact switch is mounted on the top of the mounting frame, the first contact switch is electrically connected with the gas detector body, and an over-concentration protection mechanism for protecting the gas detector body is arranged on the mounting frame. According to the utility model, the power-off protection and the plugging protection can be performed when the gas concentration value is detected to be too high through the over-concentration protection mechanism, so that the damage of the gas detector is avoided, and the service life of the gas detector is prolonged.

Description

Gas detector with sensor over-concentration protection

Technical Field

The utility model relates to the technical field of combustible gas detection, in particular to a gas detector with a sensor over-concentration protection function.

Background

The combustible gas is widely applied to daily life and industrial production of residents, provides convenience for people, and also brings with a plurality of potential safety hazards. Therefore, the detection of the combustible gas is a necessary premise for reasonably utilizing the combustible gas, and has important significance.

However, the sensors of existing gas detectors are fixed to the detector, and the sensors have a strong sensitivity only to the gas in which they are located, and the sensitivity of the gas in positions other than the prescribed positions is low, which leads to inaccuracy in the detection result. This characteristic of the sensor also places a limitation on the installation process: because the sensor needs to be facing the air supply when installed.

The prior patent (bulletin number: CN 209606409U) proposes a flammable gas detector comprising a base and a turntable connected to the base by a connector; the base is provided with a micro motor which drives the turntable to rotate; a sensor is arranged on the outer side surface of the turntable; the rotary table is characterized in that a shell is arranged above the rotary table, an alarm indicator lamp is arranged on the shell, a circuit main board is arranged in the shell, and the circuit main board is electrically connected with the sensor and the alarm indicator lamp respectively. The micro motor drives the turntable, so that the sensor is driven to rotate, the sensor is guaranteed to detect gas within a 360-degree range, and the problems of reduced accuracy of detection results and inconvenient installation caused by lower sensitivity of the gas at positions outside the prescribed position of the sensor due to strong sensitivity of the sensor to the gas at the positions of the sensor only.

The gas detector has the following disadvantages when in use: the gas detector with the high concentration can damage the gas detector in the range and even lead the detector to malfunction when a large amount of combustible gas leaks, thereby forming a great threat to surrounding personnel and equipment.

Disclosure of Invention

The utility model provides a gas detector with a sensor over-concentration protection, which solves the technical problems that when a large amount of combustible gas leaks, the gas detector with high concentration can be damaged or even the detector fails in the range, so that the gas detector forms a great threat to surrounding personnel and equipment.

In order to solve the technical problems, the gas detector with the sensor over-concentration protection comprises a mounting frame and a gas detector body, wherein the gas detector body comprises a detector display end and a detector sensing end, the gas detector body is mounted on the mounting frame, a controller and a timer are mounted on one side of the mounting frame, the timer is electrically connected with the controller, a first contact switch is mounted on the top of the mounting frame, the first contact switch is electrically connected with the gas detector body, and an over-concentration protection mechanism for protecting the gas detector body is arranged on the mounting frame.

Preferably, the over-concentration protection mechanism comprises a mounting shell, a driving motor, a threaded rod and a movable block, wherein the mounting shell is arranged at the top of the mounting frame, the driving motor is arranged inside the mounting shell, the threaded rod is rotatably arranged inside the mounting shell and fixedly connected with the driving end of the driving motor, the movable block is in threaded connection with the threaded rod, the bottom end of the threaded rod is in contact with the first contact switch, the driving motor is electrically connected with the controller, the gas detector body can be controlled to be closed when the gas exceeds a concentration value, and the gas detector body is prevented from being damaged by high-concentration gas.

Preferably, the over-concentration protection mechanism further comprises a second contact switch, a protective sleeve, an electric telescopic rod and a plugging plate, wherein the second contact switch is arranged at the top of the installation frame, the protective sleeve is arranged below the installation frame, the display end of the detector penetrates through the bottom wall of the installation frame and then is inserted into the inner cavity of the protective sleeve, the electric telescopic rod is arranged on the bottom surface of the installation frame, the plugging plate is arranged at the telescopic end of the electric telescopic rod, and the electric telescopic rod is electrically connected with the second contact switch to achieve the effect of sealing protection.

Preferably, the guide block is installed to the top surface of movable block, the guide slot has been seted up to the interior roof of installation shell, guide block sliding connection is in the inside of guide slot, leads the removal of movable block.

Preferably, the sliding port is formed in the plugging plate, a limiting rod is connected to the sliding port in a sliding mode, the top end of the limiting rod is fixedly connected with the bottom surface of the mounting frame, and the limiting plate is fixedly mounted at the bottom end of the limiting rod to limit movement of the plugging plate.

Preferably, the diapire of installing the frame runs through and has offered the trompil that supplies the detector sensing end to pass, the sealing washer is installed to the inner wall of trompil, plays sealed effect.

Preferably, a buzzer is mounted on the left side of the mounting frame, and the buzzer is electrically connected with the second contact switch, so that an alarm can be sent out to prompt surrounding personnel when the gas is too thick.

Preferably, one end of the threaded rod, which is far away from the driving motor, is provided with a bearing, and the threaded rod is rotatably connected with the inner wall of the mounting shell through the bearing, so that the threaded rod is more stable when rotating.

Compared with the related art, the gas detector with the sensor over-concentration protection has the following beneficial effects:

1. in the utility model, when the concentration value of the combustible gas detected by the detector sensing end exceeds a preset threshold, the controller controls the timer and the driving motor to start, the driving motor drives the threaded rod to rotate, the threaded rod drives the movable block to move rightwards to the upper part of the second contact switch, the movable block is separated from the first contact switch and is contacted with the second contact switch in the moving process, the gas detector body is in a closed state when the movable block is separated from the first contact switch, the gas is not detected any more, and the effect of power-off protection is achieved, so that the gas detector body is protected from being damaged in the high concentration.

2. According to the utility model, when the movable block is contacted with the second contact switch, the electric telescopic rod pulls the plugging plate to move upwards to plug the bottom end of the protective sleeve, so that the sensing end of the detector is in a relatively airtight environment, the external gas is not contacted with the sensing end of the detector any more, the blocking protection effect is achieved, and the gas detector body is protected from being damaged in high concentration.

Drawings

FIG. 1 is a schematic diagram of a gas detector with sensor over-concentration protection;

FIG. 2 is a schematic cross-sectional view of a gas detector with sensor over-concentration protection;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

fig. 4 is an enlarged view of the structure at B in fig. 2.

Reference numerals in the drawings: 1. a mounting frame; 2. a detector display end; 3. a detector sensing end; 4. a controller; 5. a timer; 6. a buzzer; 7. a mounting shell; 8. a driving motor; 9. a threaded rod; 10. a movable block; 11. a guide block; 12. a guide groove; 13. a first contact switch; 14. a second contact switch; 15. a protective sleeve; 16. an electric telescopic rod; 17. a plugging plate; 18. a limit rod; 19. a limiting plate; 20. and (3) sealing rings.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated azimuth or positional relationship is based on the azimuth or positional relationship shown in the drawings, it is merely for convenience of description and simplification of the description, and does not indicate or imply that the indicated apparatus or element must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

An embodiment I is given by fig. 1-4, a gas detector with sensor over-concentration protection comprises a mounting frame 1 and a gas detector body, wherein the gas detector body comprises a detector display end 2 and a detector sensing end 3, the gas detector body is mounted on the mounting frame 1, a controller 4 and a timer 5 are mounted on one side of the mounting frame 1, the timer 5 is electrically connected with the controller 4, a first contact switch 13 is mounted on the top of the mounting frame 1, the first contact switch 13 is electrically connected with the gas detector body, and an over-concentration protection mechanism for protecting the gas detector body is arranged on the mounting frame 1.

The gas detector body has functions of detecting gas concentration and displaying gas concentration, is a conventionally known product, and is not repeated here in detail, the controller 4 is usually a programmable controller, the opening and closing of the timer 5 can be controlled according to programming, and the first contact switch 13 is usually a power supply for controlling the opening and closing of the gas detector body.

Embodiment two, on the basis of embodiment one, the over-concentration protection mechanism includes installation shell 7, driving motor 8, threaded rod 9 and movable block 10, the top at installation frame 1 is installed to installation shell 7, driving motor 8 installs in the inside of installation shell 7, threaded rod 9 rotates the inside of installing shell 7 and with driving motor 8's drive end fixed connection, movable block 10 threaded connection is on threaded rod 9, the bottom of threaded rod 9 is contradicted with first contact switch 13, driving motor 8 and controller 4 electric connection, can control the gas detector body and close when gas exceeds the concentration value, prevent high concentration gas damage gas detector body.

For the drive motor 8, which is usually a motor capable of rotating in the forward and reverse directions, for the mounting shell 7, which is usually fixedly mounted on the top of the mounting frame 1, for the threaded rod 9, which is usually connected with the drive end of the motor through a coupling, the movable block 10 is in threaded connection with the threaded rod 9, and when the threaded rod 9 rotates, the movable block 10 can move inside the mounting shell 7.

The third embodiment is based on the first embodiment, the over-concentration protection mechanism further comprises a second contact switch 14, a protective sleeve 15, an electric telescopic rod 16 and a plugging plate 17, the second contact switch 14 is installed at the top of the installation frame 1, the protective sleeve 15 is installed below the installation frame 1, the display end 2 of the detector penetrates through the bottom wall of the installation frame 1 and then is inserted into the inner cavity of the protective sleeve 15, the electric telescopic rod 16 is installed at the bottom surface of the installation frame 1, the plugging plate 17 is installed at the telescopic end of the electric telescopic rod 16, the electric telescopic rod 16 is electrically connected with the second contact switch 14, and the electric telescopic rod 16 can be controlled to stretch out and draw back through the second contact switch 14, so that the sealing protection effect is achieved.

When the movable block 10 is in contact with the second contact switch 14, the control electric telescopic rod 16 pulls the plugging plate 17 to plug the bottom end of the protective sleeve 15, so that the sensor end 3 of the detector can be plugged, and the over-concentrated gas is prevented from being in continuous contact with the sensor end 3 of the detector.

In the fourth embodiment, on the basis of the first embodiment, in order to prevent the movable block 10 from synchronously rotating along with the threaded rod 9, a guide block 11 is mounted on the top surface of the movable block 10, a guide groove 12 is formed in the inner top wall of the mounting shell 7, and the guide block 11 is slidably connected in the guide groove 12 to guide the movement of the movable block 10;

in order to prevent the plugging plate 17 from shifting in position when moving up and down, a sliding port is formed in the plugging plate 17, a limiting rod 18 is connected in the sliding port in a sliding manner, the top end of the limiting rod 18 is fixedly connected with the bottom surface of the mounting frame 1, and a limiting plate 19 is fixedly arranged at the bottom end of the limiting rod 18 to limit the movement of the plugging plate 17;

in order to prevent the over-concentrated gas from entering the interior of the protective sleeve 15 from the opening, the bottom wall of the mounting frame 1 is provided with an opening for the sensing end 3 of the detector to pass through, and the inner wall of the opening is provided with a sealing ring 20 for sealing;

in order to timely inform surrounding personnel when the gas is too thick, the buzzer 6 is arranged on the left side of the mounting frame 1, and the buzzer 6 is electrically connected with the second contact switch 14 and can give an alarm to prompt the surrounding personnel when the gas is too thick;

in order to prevent the threaded rod 9 from shaking in the rotating process, a bearing is arranged at one end, far away from the driving motor 8, of the threaded rod 9, and the threaded rod 9 is in rotating connection with the inner wall of the mounting shell 7 through the bearing, so that the threaded rod 9 is more stable in rotating.

Working principle: the combustible gas is detected through the detector sensing end 3 in the using process, the concentration value of the gas is displayed through the detector display end 2, when the detector sensing end 3 detects that the concentration value of the combustible gas does not exceed a preset threshold value, a normal detection processing program is executed, when the detector sensing end 3 detects that the concentration value of the combustible gas exceeds the preset threshold value, the controller 4 controls the timer 5 and the driving motor 8 to start, the driving motor 8 drives the threaded rod 9 to rotate, the threaded rod 9 drives the movable block 10 to move rightwards to be above the second contact switch 14, the movable block 10 is separated from the first contact switch 13 and is contacted with the second contact switch 14 in the moving process, the gas detector body is in a closed state when the movable block 10 is separated from the first contact switch 13, the gas is not detected any more, the power-off protection effect is achieved, when the movable block 10 contacts with the second contact switch 14, the electric telescopic rod 16 pulls the blocking plate 17 to move upwards to block the bottom end of the protective sleeve 15, so that the sensor end 3 of the detector is in a relatively airtight environment, the external gas is no longer in contact with the sensor end 3 of the detector, the blocking protection effect is achieved, the reverse rotation of the driving motor 8 is started regularly through the timer 5, after the timer 5 reaches the set time, the driving end of the driving motor 8 is controlled to rotate reversely, the driving motor 8 drives the threaded rod 9 to rotate, the threaded rod 9 drives the movable block 10 to move leftwards to the position above the first contact switch 13, the movable block 10 is separated from the second contact switch 14 in the moving process and is contacted with the first contact switch 13, the electric telescopic rod 16 pushes the blocking plate 17 to move downwards when the movable block 10 is separated from the second contact switch 14, so that the gas can enter the inside the protective sleeve 15 to be contacted with the sensor end 3 of the detector, when the movable block 10 is in contact with the first contact switch 13, the gas detector body is in an on state, the gas concentration can be detected, when the gas concentration is detected to be recovered to be within a set range value, the gas detector body automatically enters a normal detection state, so that the gas detector body is protected from being damaged in high concentration, and when the gas concentration is detected to be not recovered to be within the set range value, the gas detector body is subjected to power-off protection and plugging protection again.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a take gas detector of too much concentration protection of sensor, includes installing frame (1) and gas detector body, its characterized in that, the gas detector body includes detector display end (2) and detector sensing end (3), the gas detector body is installed on installing frame (1), controller (4) and timer (5) are installed to one side of installing frame (1), timer (5) link to each other with controller (4) electrical property, first contact switch (13) are installed at the top of installing frame (1), first contact switch (13) and gas detector body electric connection, be equipped with the too much concentration protection mechanism who is used for protecting the gas detector body on installing frame (1).

2. The gas detector with sensor over-concentration protection according to claim 1, wherein the over-concentration protection mechanism comprises a mounting shell (7), a driving motor (8), a threaded rod (9) and a movable block (10), the mounting shell (7) is mounted at the top of the mounting frame (1), the driving motor (8) is mounted in the mounting shell (7), the threaded rod (9) is rotatably mounted in the mounting shell (7) and fixedly connected with the driving end of the driving motor (8), the movable block (10) is in threaded connection with the threaded rod (9), the bottom end of the threaded rod (9) is in interference with the first contact switch (13), and the driving motor (8) is electrically connected with the controller (4).

3. The gas detector with sensor over-concentration protection according to claim 2, wherein the over-concentration protection mechanism further comprises a second contact switch (14), a protective sleeve (15), an electric telescopic rod (16) and a blocking plate (17), the second contact switch (14) is installed at the top of the installation frame (1), the protective sleeve (15) is installed below the installation frame (1), the display end (2) of the detector penetrates through the bottom wall of the installation frame (1) and then is inserted into the inner cavity of the protective sleeve (15), the electric telescopic rod (16) is installed on the bottom surface of the installation frame (1), and the blocking plate (17) is installed at the telescopic end of the electric telescopic rod (16), and the electric telescopic rod (16) is electrically connected with the second contact switch (14).

4. The gas detector with the sensor over-concentration protection according to claim 2, wherein a guide block (11) is installed on the top surface of the movable block (10), a guide groove (12) is formed in the inner top wall of the installation shell (7), and the guide block (11) is slidably connected in the guide groove (12).

5. A gas detector with sensor over-concentration protection according to claim 3, characterized in that a sliding port is formed in the plugging plate (17), a limiting rod (18) is slidably connected in the sliding port, the top end of the limiting rod (18) is fixedly connected with the bottom surface of the mounting frame (1), and a limiting plate (19) is fixedly mounted at the bottom end of the limiting rod (18).

6. The gas detector with the sensor over-concentration protection according to claim 1, wherein an opening for the sensor end (3) of the detector to pass through is formed in the bottom wall of the mounting frame (1), and a sealing ring (20) is mounted on the inner wall of the opening.

7. The gas detector with the sensor over-concentration protection according to claim 1, wherein a buzzer (6) is installed on the left side of the installation frame (1), and the buzzer (6) is electrically connected with the second contact switch (14).

8. A gas detector with sensor over-concentration protection according to claim 2, characterized in that the end of the threaded rod (9) remote from the drive motor (8) is provided with a bearing, and the threaded rod (9) is rotatably connected with the inner wall of the mounting shell (7) through the bearing.