Petroleum volatile organic compound detector

Abstract

The utility model discloses a petroleum volatile organic compound detector which comprises a detector shell, a gas collection hose, a gas collection head, a plurality of moving wheels and a collection head suspension bracket, the utility model relates to the technical field of organic compound detectors, and in the organic compound detector, gas volatilized at a petroleum sample is sucked into a combustion reaction chamber through a gas collection ignition analysis structure, and ignited waste gas is discharged to the outside after being detected and determined by a flame ionization detector. And the detector can be conveniently moved, and the adaptability to various scenes is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of organic compound detectors, in particular to a petroleum volatile organic compound detector. Background Art

[0002] Petroleum volatile organic compounds (VOCs) refer to chemical substances that are easily volatile at room temperature, mainly from petroleum and petroleum products. They are composed of carbon and hydrogen atoms and have low boiling points and vapor pressures; petroleum volatile organic compounds are widely used in many industrial processes, including oil refining, chemical production, solvent and paint manufacturing, etc. They can also be released into the atmosphere as volatile pollutants, affecting air quality and the environment. Common petroleum volatile organic compounds include benzene, toluene, ethylbenzene, xylene, alcohols, ketones, ethers, etc.; these compounds are potentially harmful to human health and the environment. Exposure to high concentrations of petroleum volatile organic compounds may cause irritation of the eyes, nose and throat, and long-term exposure may cause respiratory problems, nervous system damage and cancer risks. In addition, petroleum volatile organic compounds are also precursors to the formation of photochemical smog and ozone, which have a negative impact on the quality of the atmospheric environment; therefore, it is crucial to monitor and control the emission of petroleum volatile organic compounds. Relevant instruments and methods can be used to detect and quantify the concentration of VOCs in the air to ensure that industrial processes and environmental protection meet the prescribed standards and limits. These measures help reduce potential risks to human health and the environment and promote sustainable development. Conventional testing requires collecting volatile gases in the space first and then placing them in the testing equipment for testing. Therefore, the quality of the collected gases directly affects the accuracy of the test. Therefore, this case hopes to propose an organic compound detector that can directly collect and test. For the above problems, there may already be technical means to solve them in the existing technology, but this case wants to provide an alternative or replacement technical solution. Utility Model Content

[0003] To achieve the above purpose, the utility model is implemented through the following technical solutions: a petroleum volatile organic compound detector, comprising: an instrument housing, a gas collecting hose, a gas collecting head, a plurality of moving wheels and a collecting head hanging bracket, the gas collecting hose is installed on the instrument housing, the gas collecting head is connected to the gas collecting hose, the collecting head hanging bracket is installed on the instrument housing, a plurality of moving wheels are respectively installed at the bottom of the instrument housing, the gas collecting head is connected to the collecting head hanging bracket, and a gas collecting ignition analysis structure is installed in the instrument housing;

[0004] The gas collection ignition analysis structure includes: an analysis control panel, a negative pressure gas collection pump, a pair of air guide pipes, a filter safety compartment, a pair of closed solenoid valves, a combustion reaction chamber, an indoor igniter, a combustion gas extraction pipeline, a flame ionization detector and an exhaust joint;

[0005] The analysis control panel is installed on the instrument housing, the negative pressure air collecting pump is installed in the instrument housing through a bracket, and the negative pressure air collecting pump is connected to the air collecting hose, a pair of the air guide ducts are respectively installed on both sides of the filter safety compartment, and a pair of the air guide ducts are respectively connected to the negative pressure air collecting pump and the closed solenoid valve, a combustion reaction chamber is opened in the instrument housing, a pair of the closed solenoid valves are respectively installed on the combustion reaction chamber, the indoor igniter is installed in the combustion reaction chamber, the combustion gas extraction pipeline is installed on the instrument housing, and the combustion gas extraction pipeline is connected to the closed solenoid valve, the flame ionization detector is installed on the instrument housing, and the flame ionization detector is connected to the combustion gas extraction pipeline, the exhaust joint is installed on the combustion gas extraction pipeline, and a quick-release filter box replacement assembly is installed on the filter safety compartment.

[0006] It should be noted that, in the above, the detector is pushed to the detection position by the moving wheel, the gas collection head is removed from the collection head hanging bracket, and the negative pressure gas collection pump is started by analyzing the control panel, so that the air at the target is sucked into the air duct through the gas collection head and the gas collection hose, and then filtered by the filter safety warehouse and transported into the combustion reaction chamber. After reaching the set gas collection volume, a pair of closed solenoid valves are closed, and the measured gas in the combustion reaction chamber is ignited by the indoor igniter. After sufficient combustion, a pair of closed solenoid valves are opened, and the combustion gas extraction pipeline extracts the post-combustion gas to the flame ionization detector through the set exhaust gas extraction pump, and finally the measured exhaust gas is discharged to the outside through the exhaust joint. The flame ionization detector (VOCs in the sample to be tested will burn in the flame to produce ionized carbon and hydrogen atoms. These ions will be attracted to the electrode by the electric field to generate a current signal. According to the intensity of the current signal, the concentration of VOCs can be inferred) The multi-functional electronic device interface set in the flame ionization detector can be connected to electronic devices for debugging detection sensitivity and exporting data.

[0007] Preferably, the quick-release filter box replacement assembly comprises: a filter insurance module, an insurance compartment base, an L-shaped covering compartment plate, a coupling groove on the compartment body, and a compartment plate coupling key;

[0008] The safety compartment base is installed at the bottom of the inner side of the instrument housing, and the safety compartment base is connected to the filter safety compartment, the L-shaped cover compartment plate is installed on the filter safety compartment through a rotating shaft, the compartment plate coupling key is installed on the L-shaped cover compartment plate, the filter safety compartment is provided with the compartment body coupling groove, the compartment body coupling groove and the compartment plate coupling key are engaged with each other, and the filter safety module is installed in the filter safety compartment;

[0009] It should be noted that, in the above, the filter safety chamber on the safety chamber base can filter the passing air to prevent dust from mixing into the combustion reaction chamber, thereby making the measurement after combustion inaccurate, and the static dissipator arranged in the filter safety module can prevent static electricity from accumulating and generating sparks, thereby avoiding sparks igniting volatile gases when collecting gases, causing explosions and accidents. When the dust accumulates to a certain extent, the L-shaped covering chamber plate is lifted to separate the coupling groove on the chamber body from the chamber plate coupling key, and then the filter safety module is replaced, so that the detector can be easily cleaned and maintained, and the maintenance cost is greatly reduced.

[0010] Preferably, an opening and closing door is provided in the instrument housing;

[0011] Preferably, the flame ionization detector is provided with a multifunctional electronic device interface;

[0012] Preferably, the combustion gas extraction pipeline is provided with an exhaust gas extraction pump;

[0013] Preferably, a static dissipator is provided in the filtering insurance module. Beneficial Effects

[0014] The utility model provides a petroleum volatile organic compound detector. It has the following beneficial effects. Compared with the prior art, the petroleum volatile organic compound detector has the following beneficial effects: the organic compound detector absorbs the volatilized gas from the petroleum sample into the combustion reaction chamber through the gas collection ignition analysis structure, and the exhaust gas is discharged to the outside after being inspected and measured by the flame ionization detector after ignition. Because it is directly collected, there is no inaccurate collection during transfer, which makes the result inaccurate. The detector can be easily moved and has higher adaptability to various scenes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of the main cross-sectional structure of a petroleum volatile organic compound detector.

[0016] Figure 2 The utility model is a schematic diagram of the filter safety chamber structure of a petroleum volatile organic compound detector.

[0017] In the figure: 1. Instrument housing; 2. Gas collecting hose; 3. Gas collecting head; 4. Moving wheel; 5. Collection head hanging bracket; 6. Analysis control panel; 7. Negative pressure gas collecting pump; 8. Air guide duct; 9. Filter safety compartment; 10. Closed solenoid valve; 11. Combustion reaction chamber; 12. Indoor igniter; 13. Combustion gas extraction pipeline; 14. Flame ionization detector; 15. Exhaust connector; 16. Filter safety module; 17. Safety compartment base; 18. L-shaped covering compartment plate; 19. Coupling groove on the compartment body; 20. Compartment plate coupling key. DETAILED DESCRIPTION

[0018] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0019] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principles and processes, and no longer explains the electrical control. Example

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1-2As shown, a petroleum volatile organic compound detector includes: an instrument housing 1, a gas collecting hose 2, a gas collecting head 3, a plurality of moving wheels 4 and a collecting head hanging bracket 5, the gas collecting hose 2 is installed on the instrument housing 1, the gas collecting head 3 is connected to the gas collecting hose 2, the collecting head hanging bracket 5 is installed on the instrument housing 1, a plurality of moving wheels 4 are respectively installed at the bottom of the instrument housing 1, the gas collecting head 3 is connected to the collecting head hanging bracket 5, and a gas collecting ignition analysis structure is installed in the instrument housing 1; the gas collecting ignition analysis structure includes: an analysis control panel 6, a negative pressure gas collecting pump 7, A pair of air ducts 8, a filter safety compartment 9, a pair of closed solenoid valves 10, a combustion reaction chamber 11, an indoor igniter 12, a combustion gas extraction pipeline 13, a flame ionization detector 14 and an exhaust joint 15; the analysis control panel 6 is installed on the instrument housing 1, the negative pressure gas collecting pump 7 is installed in the instrument housing 1 through a bracket, and the negative pressure gas collecting pump 7 is connected to the gas collecting hose 2, a pair of the air ducts 8 are respectively installed on both sides of the filter safety compartment 9, and a pair of the air ducts 8 are respectively connected to the negative pressure gas collecting pump 7 and the closed solenoid valve 10, and the combustion reaction chamber 1 is opened in the instrument housing 1 1, a pair of closed solenoid valves 10 are respectively installed on the combustion reaction chamber 11, the indoor igniter 12 is installed in the combustion reaction chamber 11, the combustion gas extraction pipeline 13 is installed on the instrument housing 1, and the combustion gas extraction pipeline 13 is connected to the closed solenoid valve 10, the flame ionization detector 14 is installed on the instrument housing 1, and the flame ionization detector 14 is connected to the combustion gas extraction pipeline 13, the exhaust joint 15 is installed on the combustion gas extraction pipeline 13, and a quick-release filter box replacement component is installed on the filter safety compartment 9; the quick-release filter box replacement component includes : Filter insurance module 16, insurance bin base 17, L-shaped covering bin plate 18, bin body coupling groove 19 and bin plate coupling key 20; the insurance bin base 17 is installed at the inner bottom of the instrument housing 1, and the insurance bin base 17 is connected to the filter insurance bin 9, the L-shaped covering bin plate 18 is installed on the filter insurance bin 9 through a rotating shaft, the bin plate coupling key 20 is installed on the L-shaped covering bin plate 18, the filter insurance bin 9 is provided with the bin body coupling groove 19, the bin body coupling groove 19 and the bin plate coupling key 20 are engaged with each other, and the filter insurance module 16 is installed in the filter insurance bin 9.

[0021] According to the attached Figure 1-2It is concluded that the detector is pushed to the detection position by the moving wheel 4, the gas collection head 3 is removed from the collection head hanging bracket 5, and the negative pressure gas collection pump 7 is started by analyzing the control panel 6, so that the air at the target is sucked into the air guide duct 8 through the gas collection head 3 and the gas collection hose 2, and is filtered by the filter safety warehouse 9 and transported into the combustion reaction chamber 11. After reaching the set gas collection volume, a pair of closed solenoid valves 10 are closed, and the measured gas in the combustion reaction chamber 11 is ignited by the indoor igniter 12. After sufficient combustion, a pair of closed solenoid valves 10 are opened, and the combustion gas extraction pipeline 13 extracts the post-combustion gas to the flame ionization detector 14 through the set exhaust gas extraction pump, and finally the measured exhaust gas is discharged to the outside through the exhaust joint 15. The flame ionization detector 14 (VOCs in the sample to be tested will burn in the flame to produce ionized carbon and hydrogen atoms, which are ionized The electrons will be attracted to the electrodes by the electric field, generating a current signal. The concentration of VOCs can be inferred based on the strength of the current signal. The multifunctional electronic device interface provided on the flame ionization detector 14 can be connected to electronic devices for debugging the detection sensitivity and exporting data. The filter safety compartment 9 on the safety compartment base 17 can filter the passing air to prevent dust from mixing into the combustion reaction chamber 11, thereby making the measurement after combustion inaccurate. The static dissipator provided in the filter safety module can prevent static electricity from accumulating and generating sparks, and avoid sparks igniting volatile gases when collecting gas, causing explosions and accidents. When the dust accumulates to a certain extent, the L-shaped covering compartment plate 18 is opened to separate the coupling groove 19 on the compartment body from the compartment plate coupling key 20, and then the filter safety module 16 is replaced, so that the detector can be easily cleaned and maintained, and the maintenance cost is greatly reduced.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A petroleum volatile organic compound detector, comprising: An instrument housing (1), a gas collecting hose (2), a gas collecting head (3), a plurality of moving wheels (4) and a collecting head hanging bracket (5), characterized in that the gas collecting hose (2) is mounted on the instrument housing (1), the gas collecting head (3) is connected to the gas collecting hose (2), the collecting head hanging bracket (5) is mounted on the instrument housing (1), a plurality of moving wheels (4) are respectively mounted on the bottom of the instrument housing (1), the gas collecting head (3) is connected to the collecting head hanging bracket (5), and a gas collecting ignition analysis structure is installed in the instrument housing (1); The gas collection ignition analysis structure comprises: an analysis control panel (6), a negative pressure gas collection pump (7), a pair of air guide pipes (8), a filter safety compartment (9), a pair of closed solenoid valves (10), a combustion reaction chamber (11), an indoor igniter (12), a combustion gas extraction pipe (13), a flame ionization detector (14) and an exhaust joint (15); The analysis control panel (6) is mounted on the instrument housing (1), the negative pressure gas collecting pump (7) is mounted in the instrument housing (1) via a bracket, and the negative pressure gas collecting pump (7) is connected to the gas collecting hose (2), a pair of air guide ducts (8) are respectively mounted on both sides of the filter safety compartment (9), and a pair of air guide ducts (8) are respectively connected to the negative pressure gas collecting pump (7) and the closed solenoid valve (10), the instrument housing (1) is provided with the combustion reaction chamber (11), and the pair of closed solenoid valves (10) are respectively mounted in the combustion reaction chamber (11). ), the indoor igniter (12) is installed in the combustion reaction chamber (11), the combustion gas extraction pipeline (13) is installed on the instrument housing (1), and the combustion gas extraction pipeline (13) is connected to the closed solenoid valve (10), the flame ionization detector (14) is installed on the instrument housing (1), and the flame ionization detector (14) is connected to the combustion gas extraction pipeline (13), the exhaust joint (15) is installed on the combustion gas extraction pipeline (13), and a quick-release filter box replacement component is installed on the filter safety compartment (9).

2. A petroleum volatile organic compound detector according to claim 1, characterized in that: The quick-release filter box replacement assembly comprises: a filter safety module (16), a safety compartment base (17), an L-shaped covering compartment plate (18), a coupling groove on the compartment body (19), and a compartment plate coupling key (20); The safety compartment base (17) is mounted on the bottom inner side of the instrument housing (1), and the safety compartment base (17) is connected to the filter safety compartment (9); the L-shaped cover compartment plate (18) is mounted on the filter safety compartment (9) via a rotating shaft; the compartment plate coupling key (20) is mounted on the L-shaped cover compartment plate (18); the filter safety compartment (9) is provided with a compartment body coupling groove (19); the compartment body coupling groove (19) and the compartment plate coupling key (20) are engaged with each other; and the filter safety module (16) is mounted in the filter safety compartment (9).

3. A petroleum volatile organic compound detector according to claim 2, characterized in that: An opening and closing door is provided in the instrument housing (1).

4. A petroleum volatile organic compound detector according to claim 3, characterized in that: The flame ionization detector (14) is provided with a multifunctional electronic equipment interface.

5. A petroleum volatile organic compound detector according to claim 4, characterized in that: The combustion gas extraction pipeline (13) is provided with an exhaust gas extraction pump.

6. A petroleum volatile organic compound detector according to claim 5, characterized in that: A static dissipator is arranged in the filtering insurance module (16).

Images