Portable gas monitor

Abstract

The utility model discloses a portable gas monitor which comprises a shell and a handle arranged at the bottom of the shell, a gas monitoring module is arranged in the shell, and a power supply unit for supplying power to the gas monitoring module is arranged in the handle; a storage barrel and an exhaust port are arranged at the top of the shell; the exhaust port communicates with the gas inlet end of the gas monitoring module through an exhaust pipe, and a detachable first sealing cover is arranged at the end, away from the shell, of the exhaust port. An adapter pipe is arranged in the storage cylinder, one end of the adapter pipe is communicated with the gas outlet end of the gas monitoring module through a gas inlet pipe, and the other end of the adapter pipe is connected with a telescopic pipe; a detachable second sealing cover is arranged at the end, away from the shell, of the storage barrel, and the telescopic pipe shrunk in the storage barrel is stored in the storage barrel through the second sealing cover.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of gas monitoring, specifically relates to a portable gas monitor. BACKGROUND

[0002] Mainly utilize gas sensor to detect the gas species existing in the environment, and the gas sensor is the sensor for detecting the composition and content of the gas. Since most of the gases have characteristic absorption peaks in the mid-infrared region, the absorption of the characteristic absorption peak position can determine the concentration of a certain gas. Therefore, using infrared for gas analysis is a common gas monitoring technology at present, which is based on the different concentrations of the components to be analyzed, the different absorbed radiation energy. The remaining radiation energy makes the temperature in the detector rise differently, and the pressure on both sides of the moving film is different, thereby generating an electrical signal of the capacitance detector, which can indirectly measure the concentration of the component to be analyzed.

[0003] Patent CN221199612U discloses a kind of portable multi-gas detector, and specifically discloses including multi-gas detector body, the top of multi-gas detector body is equipped with gas port, gas port is communicated with installation hose, the end of hose is movably installed hollow telescopic pipe, the upper end of hollow telescopic pipe is equipped with external thread, the back of multi-gas detector body is fixedly installed fixed plate, fixed plate is fixedly connected with movable plate by torsion spring, movable plate is integrally connected with internal thread pipe.The patent adds hollow telescopic pipe, so that multi-gas detector body does not need to be equipped with outer tube to detect gas in dangerous places such as inspection well, high in use safety, hollow telescopic pipe is stably placed and forms a clip structure with multi-gas detector body, so that multi-gas detector body can be clamped and carried, increase the convenience and flexibility of carrying. However, the hose and hollow telescopic pipe in the patent are arranged outside the gas detector body, which is easy to be deformed or even damaged by external force, and the end of the hollow telescopic pipe in the patent is an open structure, impurities are easy to enter the pipeline and affect the air intake. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of portable gas monitor, to solve the problem that present gas monitor is arranged outside gas detector body and is easy to be influenced by external force and external impurities are easy to enter telescopic pipe.

[0005] To solve the above technical problems, the application provides a portable gas monitor, which comprises a shell, a handle arranged at the bottom of the shell, a gas monitoring module arranged in the shell, and a power supply unit arranged in the handle and used for supplying power to the gas monitoring module.

[0006] Further, the diameter of the adapter pipe is larger than that of the air inlet pipe, and the air inlet pipe extends into the receiving cylinder through a through hole on the shell and is in communication with the adapter pipe.

[0007] Further, the adapter pipe and the air inlet pipe are integrally formed.

[0008] Further, the adapter pipe is provided with a filter screen.

[0009] Further, the adapter pipe and the telescopic pipe are threadedly connected.

[0010] Further, the telescopic pipe is a corrugated pipe.

[0011] Further, the gas monitoring module comprises a gas cell, the air inlet pipe is in communication with an inlet of the gas cell, and the air outlet pipe is in communication with an outlet of the gas cell; one end of the gas cell is provided with a laser emitting unit, the other end of the gas cell is provided with a laser detecting unit, and the laser detecting unit is signal-connected with a single-chip microcomputer arranged in the shell.

[0012] Further, the power supply unit comprises a storage battery arranged in the handle, and the storage battery is connected with the laser emitting unit, the laser detecting unit and the single-chip microcomputer through a voltage stabilizing circuit.

[0013] Further, the shell is provided with a display screen and operation buttons which are signal-connected with the single-chip microcomputer.

[0014] Further, the surface of the handle is provided with an anti-skid pad.

[0015] The portable gas monitor has the advantages that: the telescopic pipe can be adjusted in length according to the monitoring scene, the telescopic pipe can be stored in the receiving cylinder, and the telescopic pipe is protected and external impurities are prevented from entering the telescopic pipe. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0017] Figure 1 The internal structure schematic view of one embodiment of the utility model.

[0018] Figure 2 The external structure schematic view of one embodiment of the utility model.

[0019] Figure 3 The air inlet pipe, adapter pipe and bellows connecting structure schematic view of one embodiment of the utility model.

[0020] Wherein: 1, the shell;11, handle;2, gas pool;21, laser emission unit;22, laser detection unit;3, air inlet pipe;31, exhaust port;32, first sealing cover;4, exhaust pipe;41, air pump;42, storage cylinder;43, second sealing cover;5, adapter pipe;51, bellows;52, filter screen;6, single-chip microcomputer;7, battery;71, voltage stabilizing circuit;8, non-slip mat;9, display screen;91, operation button. Specific implementation

[0021] As Figure 1 The portable gas monitor shown, including shell 1 and setting shell 1 bottom handle 11, shell 1 is equipped with gas monitoring module, handle 11 is equipped with the power supply unit for the power supply of gas monitoring module;The top of shell 1 is equipped with storage cylinder 42 and exhaust port 31;Exhaust port 31 is communicated with the air inlet end of gas monitoring module through exhaust pipe 4, and the end of exhaust port 31 away from shell 1 is equipped with detachable first sealing cover 32;Storage cylinder 42 is equipped with adapter pipe 5, one end of adapter pipe 5 is communicated with the air outlet end of gas monitoring module through air inlet pipe 3;The other end of adapter pipe 5 is connected with telescopic pipe, the end of storage cylinder 42 away from shell 1 is equipped with detachable second sealing cover 43, and the telescopic pipe retracted in storage cylinder 42 is stored in storage cylinder 42 through second sealing cover 43;Air pump 41 is arranged on air inlet pipe 3.

[0022] The utility model discloses a telescopic telescopic pipe can be adapted to a variety of monitoring scene, can adjust the length of telescopic pipe according to the need in the gas monitoring process;By setting storage cylinder 42, telescopic pipe can be retracted in storage cylinder 42, then telescopic pipe is stored in storage cylinder 42 using sealing cover, not only can telescopic pipe be stored, protect telescopic pipe, still can prevent the foreign matter of outside from entering telescopic pipe.

[0023] According to one embodiment of the present application, the diameter of the adapter pipe 5 is greater than the diameter of the air inlet pipe 3, and the air inlet pipe 3 extends through the through hole on the shell 1 which is matched with the air inlet pipe 3 into the receiving cylinder 42 and communicates with the adapter pipe 5. By using the adapter pipe 5 with a diameter greater than that of the air inlet pipe 3, the air tank can be prevented from being damaged by the pressure transmitted by the telescopic pipe through the air inlet pipe 3 when the telescopic pipe is received.

[0024] According to one embodiment of the present application, the adapter pipe 5 is integrally formed with the air inlet pipe 3; the connection strength of the adapter pipe 5 and the air inlet pipe 3 can be improved, and the sealing performance can be guaranteed.

[0025] According to one embodiment of the present application, a filter screen 52 is arranged in the adapter pipe 5, and the gas entering the air tank is pre-filtered through the filter screen 52 to avoid impurities (such as water vapor humidity) affecting the monitoring result.

[0026] According to one embodiment of the present application, the adapter pipe 5 is threadedly and sealingly connected with the telescopic pipe; by threadedly connecting the adapter pipe 5 with the telescopic pipe, the pipe can be easily disassembled and replaced; more importantly, the adapter pipe 5 and the telescopic pipe can be easily disassembled to clean or replace the filter screen 52 in the adapter pipe 5.

[0027] According to one embodiment of the present application, the telescopic pipe is a bellows pipe 51; the bellows pipe 51 is a flexible pipe made of elastic material, which has the characteristics of good telescopic property, strong plastic deformation ability, and can withstand large pressure, tension and torque.

[0028] According to one embodiment of the present application, the gas monitoring module comprises an air tank 2, the air inlet pipe 3 communicates with the inlet of the air tank 2, and the air outlet pipe 4 communicates with the outlet of the air tank 2; one end of the air tank 2 is provided with a laser emitting unit 21, and the other end of the air tank 2 is provided with a laser detecting unit 22, and the laser detecting unit 22 is signal-connected with a single-chip microcomputer 6 arranged in the shell 1. The laser emitting unit 21 is used for emitting near-infrared light to the laser detecting unit 22 through the air tank 2, when the gas to be measured enters the air tank 2, the absorption spectrum of the near-infrared light will change, and at the same time, the signal value received by the laser detecting unit 22 will also change with the concentration of the gas to be measured, thereby realizing the gas concentration monitoring.

[0029] According to one embodiment of the present application, the power supply unit comprises a storage battery 7 arranged in the handle 11, and the storage battery 7 is connected with the laser emitting unit 21, the laser detecting unit 22, the single-chip microcomputer 6 and the air pump 41 through a voltage stabilizing circuit 71. The voltage stabilizing circuit 71 converts the output voltage of the storage battery 7 into 12V voltage through a first voltage stabilizing chip to supply power to the laser emitting unit 21, the laser detecting unit 22 and the air pump 41, and converts the 12V voltage output by the first voltage stabilizing chip into 5V voltage through a second voltage stabilizing chip to supply power to the single-chip microcomputer 6; the first voltage stabilizing chip is adaptively selected according to the output voltage of the storage battery 7, and the first voltage stabilizing chip can use a 7805 chip.

[0030] According to one embodiment of the present application, the shell 1 is provided with a display screen and operation buttons 91 connected with the single-chip microcomputer 6 respectively.

[0031] According to one embodiment of the present application, the surface of the handle 11 is provided with a non-slip pad.

[0032] Finally, it is to be explained that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A portable gas monitor, characterized in that, The shell is internally provided with a gas monitoring module, and the handle is internally provided with a power supply unit for supplying power to the gas monitoring module; The top of the shell is provided with a receiving cylinder and an exhaust port; the exhaust port is communicated with the gas inlet end of the gas monitoring module through an exhaust pipe, and the exhaust port is provided with a detachable first sealing cover at the end away from the shell; the receiving cylinder is internally provided with an adapter pipe, one end of the adapter pipe is communicated with the gas outlet end of the gas monitoring module through a gas inlet pipe, and the other end of the adapter pipe is connected with a telescopic pipe; the end of the receiving cylinder away from the shell is provided with a detachable second sealing cover, and the telescopic pipe retracted in the receiving cylinder is stored in the receiving cylinder through the second sealing cover; the gas inlet pipe is provided with a gas pump.

2. The portable gas monitor of claim 1, wherein, The diameter of the adapter pipe is greater than that of the gas inlet pipe, and the gas inlet pipe extends into the receiving cylinder and communicates with the adapter pipe through a through hole on the shell which is matched with the gas inlet pipe.

3. The portable gas monitor of claim 1 or 2, wherein, The adapter pipe and the gas inlet pipe are integrally formed.

4. The portable gas monitor of claim 3, wherein, The adapter pipe is internally provided with a filter screen.

5. The portable gas monitor of claim 4, wherein, The adapter pipe and the telescopic pipe are threadedly and sealingly connected.

6. The portable gas monitor of claim 1, wherein, The telescopic pipe is a corrugated pipe.

7. The portable gas monitor of claim 1, wherein, The gas monitoring module comprises a gas tank, the gas inlet pipe is communicated with the inlet of the gas tank, and the exhaust pipe is communicated with the outlet of the gas tank; one end of the gas tank is provided with a laser emitting unit, and the other end of the gas tank is provided with a laser detecting unit; the laser detecting unit is signal connected with a single-chip microcomputer arranged in the shell.

8. The portable gas monitor of claim 7, wherein, The power supply unit comprises a storage battery arranged in the handle, and the storage battery is connected with the laser emitting unit, the laser detecting unit and the single-chip microcomputer through a voltage stabilizing circuit respectively.

9. The portable gas monitor of claim 7, wherein, The shell is provided with a display screen and operation buttons which are signal connected with the single-chip microcomputer respectively.

10. The portable gas monitor of claim 1, wherein, The surface of the handle is provided with an anti-skid pad.

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