Exhaust gas detection gun

Abstract

The present invention discloses an exhaust gas detection gun, which belongs to the field of gas detection equipment. It provides an exhaust gas detection gun with a simple structure and convenient use, which can realize fast, convenient and repeated real-time detection of underground exhaust gas, including a gun body and a detection tube, the gun body includes an indicator device, an air suction pump, a power supply component, an indicator supply switch, an air suction switch, a mounting port and an injection pump, the mounting port is used to connect with one end of the detection tube, the indicator device can be connected to the detection tube installed to the mounting port through an indicator supply pipeline and can supply an indicator to the detection tube, the air suction pump can be connected to the detection tube installed to the mounting port through an air suction pipeline and perform an air suction operation. The present invention can realize fast, convenient and repeated detection of corresponding types of exhaust gas; it can meet the requirements of detection at any time, and has the advantages of simple equipment, easy to carry, and convenient operation.

Description

Technical Field

[0001] The invention relates to the field of gas detection equipment, and in particular to an exhaust gas detection gun for fuel equipment. Background Art

[0002] Diesel is mainly a mixture of alkanes, alkenes, cycloalkanes, and aromatic hydrocarbons. The decomposition and combustion products are harmful substances such as carbon monoxide, carbon dioxide, and nitrogen oxides, which can be absorbed through the skin and respiratory system, and have irritating and mild anesthetic effects on the skin and mucous membranes. Contact dermatitis, erythema, and blisters may occur after skin contact. Diesel vehicle exhaust forms photochemical smog, which is highly carcinogenic. At the same time, the waste gas discharged from the mine pollutes the environment. Nitrogen oxides are mainly NO and NO2, which are more toxic to human physiology than CO.

[0003] Therefore, in mines where diesel engines are used, the concentration of toxic and harmful gases in underground work sites should meet the following requirements: carbon monoxide should be less than 30 mg / m 3 ; Nitrogen dioxide less than 10mg / m 3 ; Formaldehyde less than 6mg / m 3 ; Acrolein less than 0.6mg / m 3 ; At the same time, the maximum allowable concentration of harmful substances at underground working sites is: carbon monoxide 30mg / m 3 ; Nitrogen oxides 5mg / m 3 ; Sulfur dioxide 15mg / m 3 ; Hydrogen sulfide 10mg / m 3 Therefore, when diesel engine equipment is used underground in mines, necessary air testing is required to ensure that the above-mentioned toxic and harmful gases do not exceed the prescribed concentration.

[0004] In addition, the construction specifications of the monitoring and surveillance system for metal and non-metal underground mines require: mining enterprises with conditions are encouraged to use sensors to conduct online monitoring of carbon monoxide or nitrogen dioxide in blasting smoke. The safety regulations for metal and non-metal mines require: monitoring of occupational hazards, the monitoring results should be filed, and reported to the relevant competent authorities in accordance with regulations: lead, benzene, mercury and other toxic substances should be measured every three months; the concentration of harmful gases should be measured once a month; underground air composition sampling and analysis should be conducted every six months; when chamber blasting or changing explosives, air composition should be measured before and after blasting. Therefore, there is currently a lack of timely monitoring of exhaust gas emitted by fuel equipment such as automobiles transported underground, exhaust gas generated by mechanical equipment, transformer oil-carrying equipment, and other equipment due to failures or other reasons. It is necessary to provide an exhaust gas detection device that can realize repeated detection of underground exhaust gas at any time.

[0005] In addition, since the ventilation system may be affected by factors such as wind flow energy, wind speed, local resistance, shaft resistance, fan operation, etc., the underground air quality cannot be guaranteed to be normal. Therefore, it is even more important to use detection equipment to provide detection data for mine industrial ventilation projects to ensure that ventilation meets the requirements. Summary of the invention

[0006] The technical problem solved by the present invention is to provide an exhaust gas detection gun with a simple structure and easy use, which can realize fast, convenient and repeated real-time detection of underground exhaust gas.

[0007] The technical solution adopted by the present invention to solve its technical problems is: an exhaust gas detection gun, including a gun body and a detection tube, the gun body including an indicator device, an air suction pump, a power supply assembly, an indicator supply switch, an air suction switch, an installation port and an injection pump, the installation port is used to connect with one end of the detection tube, the indicator device can be connected to the detection tube installed on the installation port through an indicator supply pipeline and can supply an indicator to the detection tube, the injection pump is connected to the indicator device to drive the indicator device to supply the indicator to the detection tube, the indicator supply switch is used to control the injection pump, the air suction pump can be connected to the detection tube installed on the installation port through an air suction pipeline and perform an air suction operation, and the air suction switch is used to control the air suction pump to perform air suction.

[0008] Furthermore, the detection tube is a transparent glass tube with scale marks.

[0009] Furthermore, the installation port is detachably connected to one end of the detection tube.

[0010] Furthermore, the detection tube is connected to the installation port by thread.

[0011] Furthermore, the power supply component is a rechargeable battery, and a charging port for charging the rechargeable battery is provided on the gun body.

[0012] Furthermore, the gun body is L-shaped, including a vertical section and a horizontal section, the vertical section correspondingly forms a hand-held portion, the indicator supply switch and the suction switch are both arranged on the side walls around the vertical section, and the installation port is arranged at the end of the free end of the horizontal section.

[0013] Furthermore, the indicator device, the air suction pump, the power supply assembly, the indicator supply pipeline and the air suction pipeline are all arranged inside the gun body.

[0014] The beneficial effect of the present invention is that by adopting the exhaust gas detection gun of the present invention and matching the corresponding detection tube, the corresponding type of exhaust gas can be detected quickly, conveniently and repeatedly. During repeated detection, there is no need to replace the detection tube, and the injection pump can be directly started to inject new indicators into the detection tube. The present invention can achieve the effect of anytime and rapid detection, and has the advantages of simple equipment, easy to carry, and convenient operation; it is particularly suitable for the needs of limited underground space and the need for air detection at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the exhaust gas detection gun of the present invention;

[0016] Marked in the figure are: gun body 1, detection tube 2, indicator device 3, suction pump 4, power supply component 5, indicator supply switch 6, suction switch 7, installation port 8, indicator supply pipeline 9, suction pipeline 10, vertical section 11, horizontal section 12, injection pump 13. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] like Figure 1 As shown, the exhaust gas detection gun of the present invention is characterized in that it includes a gun body 1 and a detection tube 2, the gun body 1 includes an indicator device 3, an air suction pump 4, a power supply component 5, an indicator supply switch 6, an air suction switch 7, an installation port 8 and an injection pump 13, the installation port 8 is used to connect with one end of the detection tube 2, the indicator device 3 can be connected with the detection tube 2 installed on the installation port 8 through the indicator supply pipeline 9 and can supply the indicator to the detection tube 2, the injection pump 13 is connected to the indicator device 3 to drive the indicator device 3 to supply the indicator to the detection tube 2, the indicator supply switch 6 is used to control the injection pump 13, the air suction pump 4 can be connected with the detection tube 2 installed on the installation port 8 through the air suction pipeline 10 and perform an air suction operation, and the air suction switch 7 is used to control the air suction pump 4 to suction.

[0019] Among them, the detection tube 2 is a detection product for detecting a certain or a class of specific gases in the air. The detection tube 2 in the present invention needs to be supplied with a corresponding indicator through the indicator device 3 when used for detection. The indicator is a kind of chemical reagent, which can change its color under certain medium conditions, such as turbidity or precipitation or fluorescence, and then the corresponding medium can be detected according to the display change of the indicator; general indicators can be divided into acid-base indicators, redox indicators, metal indicators, adsorption indicators and other types. The indicator used in the indicator device 3 in the present invention can be reasonably selected from conventional mature products on the market according to the type of gas to be detected. After the indicator is injected into the detection tube 2, the indicator will adhere to the inner wall of the detection tube 2 to form an indicator layer, and then the suction pump 4 is used to suck air from one end of the detection tube 2 for a certain period of time, and air enters from the other end of the detection tube. The specific gas in the air combines with the indicator layer on the inner wall of the detection tube 2 and then displays color. Then, the concentration of the corresponding gas in the air is judged according to the length of the indicator color change area in the axial direction of the detection tube 2.

[0020] In addition, the injection pump 13 is used to supply the indicator in the indicator device 3 to the installed detection tube 2, so that the indicator adheres to the inner wall of the detection tube 2 to form an indicator layer for subsequent detection. Specifically, the injection pump 13 can adopt various conventional supply mechanisms, such as a conventional electric supply pump, which is set in the indicator supply pipeline 9, and the electric supply pump extracts the indicator in the indicator device 3 and pumps it into the detection tube 2; in addition, a pressure pump can also be used to inject pressurized gas into the indicator device 3 through the pressure pump to squeeze the indicator into the detection tube 2. Of course, without loss of generality, when the pressure pump is used to inject pressurized gas into the indicator device 3, the gas should be a gas that cannot react with the indicator or a piston should be set between the injection cavity of the gas and the indicator to separate them. Of course, without loss of generality, the above-mentioned injection pumps 13 are all controlled by the indicator supply switch 6 to start and stop the indicator supply, and the power supply component 5 provides power to the injection pump 13.

[0021] More specifically, the detection tube 2 is usually a transparent glass tube with scale lines, and is usually set to a cylindrical tubular structure, that is, concentration scale lines set along the axial direction are printed on the tube wall of the detection tube 2; in this way, when the gas to be measured passes through the detection tube 2 and reacts with the indicator to develop a color, a corresponding color-changing column is formed, and then, by virtue of the length of the color-changing column being proportional to the concentration of the gas to be measured, the concentration data of the gas to be measured can be intuitively represented by the concentration scale data on the detection tube 2.

[0022] Without loss of generality, the detection tube 2 can be matched with different gases to be measured; the corresponding indicator in the indicator device 3 can also be replaced according to different gases to be measured. For example, detection tubes 2 of different specifications and corresponding indicator devices 3 can be set for the detection of different gases such as carbon monoxide, nitrogen oxides, sulfur dioxide and hydrogen sulfide.

[0023] More specifically, after each detection is completed, the exhaust gas detection gun described in the present invention does not need to replace the detection tube 2, but re-injects a new indicator into the detection tube 2. The newly injected indicator can squeeze out the used indicator from the detection tube 2, or manually clear the used indicator layer in the detection tube 2 before injecting the indicator, and then re-inject the new indicator, so that a new layer of indicator is re-attached to the inner wall of the detection tube 2; in this way, the next exhaust gas detection operation can be directly performed. Therefore, the exhaust gas detection gun described in the present invention can realize multiple repeated detection operations quickly, greatly improving the detection efficiency. Without loss of generality, when the same gas is repeatedly detected multiple times, there is no need to replace the indicator device 3; when the type of gas to be detected needs to be changed, it needs to be replaced with a targeted indicator device 3 to meet the requirements of the corresponding gas to be detected.

[0024] More specifically, the detection tube 2 in the present invention is preferably configured to be connected to the installation port 8 by using a detachable connection structure; for example, a threaded connection can be specifically adopted, that is, an external thread structure is provided at the corresponding end of the detection tube 2, and an internal thread structure matching the external thread structure is provided at the installation port 8. When disassembling and assembling the detection tube 2, it is only necessary to screw the detection tube 2.

[0025] In addition, in order to facilitate portability, the power supply component 5 in the present invention is preferably a rechargeable battery, and a charging port for charging the rechargeable battery is correspondingly provided on the gun body 1.

[0026] More specifically, in order to facilitate human hand holding and operation, refer to the attached Figure 1 As shown in the figure, the present invention further provides the gun body 1 with an L-shaped structure, which includes a vertical section 11 and a horizontal section 12, wherein the vertical section 11 corresponds to a hand-held portion, and can be ergonomically configured to be a structure that is convenient for human hand holding, so as to facilitate holding; accordingly, the indicator supply switch 6 and the suction switch 7 are both arranged on the surrounding side walls of the vertical section 11, so that the above switches are roughly in the corresponding area of ​​human fingers after being held by the hand, so as to facilitate key operation. Accordingly, the installation port 8 can be arranged at the end of the free end of the horizontal section 12, wherein the free end of the horizontal section 12 can be specifically referred to in the attached Figure 1 The position shown in .

[0027] In addition, the indicator device 3, the air pump 4, the power supply assembly 5, the indicator supply pipeline 9, the air suction pipeline 10 and the injection pump 13 in the present invention can be preferably arranged inside the gun body 1; in this way, the entire gun body 1 will be roughly an outer shell structure of a cavity. In addition, in order to facilitate the exhaust of the air pump 4 during the suction, when the air pump 4 is arranged inside the gun body 1, an exhaust hole structure can be further arranged on the shell of the gun body 1 corresponding to the exhaust position of the air pump 4 for exhaust.

[0028] In addition, in order to facilitate the replacement of the indicator device 3, the indicator device 3 in the present invention is preferably installed on the gun body 1 in a detachable manner, such as by threaded or clamped installation or other conventional detachable manners. In addition, when the indicator device 3 is arranged inside the gun body 1, a cover structure that can be opened and closed should be provided on the cavity shell corresponding to the gun body 1 to facilitate the replacement of the indicator device 3.

Claims

1. Exhaust gas detection gun, characterized by: The invention comprises a gun body (1) and a detection tube (2), wherein the gun body (1) comprises an indicator device (3), an air suction pump (4), a power supply component (5), an indicator supply switch (6), an air suction switch (7), a mounting port (8) and an injection pump (13), wherein the mounting port (8) is used to be connected to one end of the detection tube (2), the indicator device (3) can be communicated with the detection tube (2) mounted on the mounting port (8) through an indicator supply pipeline (9) and can supply an indicator to the detection tube (2), the injection pump (13) is connected to the indicator device (3) to drive the indicator device (3) to supply an indicator to the detection tube (2), the indicator supply switch (6) is used to control the injection pump (13), the air suction pump (4) can be communicated with the detection tube (2) mounted on the mounting port (8) through an air suction pipeline (10) and perform an air suction operation, and the air suction switch (7) is used to control the air suction pump (4) to perform air suction; The installation port (8) is detachably connected to one end of the detection tube (2); The injection pump is a pressure pump, through which pressurized gas is injected into the indicator device to squeeze the indicator into the detection tube.

2. The exhaust gas detection gun according to claim 1, characterized in that: The detection tube (2) is a transparent glass tube with scale lines.

3. The exhaust gas detection gun according to claim 2, characterized in that: The detection tube (2) is connected to the installation port (8) by threaded connection.

4. The exhaust gas detection gun according to claim 1, characterized in that: The power supply component (5) is a rechargeable battery, and a charging port for charging the rechargeable battery is provided on the gun body (1).

5. The exhaust gas detection gun according to any one of claims 1 to 4, characterized in that: The gun body (1) is of an L-shaped structure, comprising a vertical section (11) and a horizontal section (12), wherein the vertical section (11) forms a corresponding hand-held portion, the indicator supply switch (6) and the suction switch (7) are both arranged on the surrounding side walls of the vertical section (11), and the mounting port (8) is arranged at the end of the free end of the horizontal section (12).

6. The exhaust gas detection gun according to any one of claims 1 to 4, characterized in that: The indicator device (3), the air suction pump (4), the power supply component (5), the indicator supply pipeline (9) and the air suction pipeline (10) are all arranged inside the gun body (1).

7. The exhaust gas detection gun according to claim 5, characterized in that: The indicator device (3), the air suction pump (4), the power supply component (5), the indicator supply pipeline (9) and the air suction pipeline (10) are all arranged inside the gun body (1).

Images