Gas monitoring equipment for petroleum tank

Abstract

The utility model relates to the technical field of petroleum detection, and discloses gas monitoring equipment for a petroleum tank, which comprises a dilution bin, a collection space is arranged in the dilution bin, a gas inlet connected to an exhaust port of the petroleum tank is arranged on one side of the dilution bin, and a gas outlet is arranged at the top end of the dilution bin; an exhaust mechanism is arranged in the collection space and comprises a driving assembly and a movable plate, the movable plate is slidably connected with the inner wall of the dilution bin, and the driving end of the driving assembly is connected with the movable plate to drive the movable plate to slide up and down; the monitoring assembly comprises a detection probe used for detecting gas concentration, the detection probe penetrates through the dilution bin, and the bottom end of the detection probe is flush with the top wall of the dilution bin; the bottom end of the detection probe does not protrude out of the top wall of the dilution bin through ascending and descending of the movable plate in the exhaust assembly, so that the movable plate can drive exhaust by ascending and clinging to the top wall of the dilution bin, residual oil gas in the collection space is effectively exhausted through the gas outlet in the top, and the accuracy and reliability of each detection are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum detection, and more particularly to a gas monitoring device for an oil tank. Background Art

[0002] In the petrochemical industry, petroleum refers to a mixture of gaseous, liquid, and solid hydrocarbons with natural occurrence. Petroleum is generally stored and transported in a canned manner. When the oil tank is exposed to sunlight or during the oil tank heating operation, the temperature change causes the volume of the petroleum in the tank to expand, and the oil tank will discharge gas. The discharged gas is mixed with oil and gas, so it has the characteristics of being flammable and explosive. If a high-concentration oil and gas leak occurs, it will pose a great threat to people's lives and property safety. Therefore, it is necessary to detect the concentration of the discharged oil and gas.

[0003] The traditional detection method is to manually collect data by holding a detection device by hand. The detection efficiency is low and there are certain safety hazards. Therefore, recently, some gas detection devices that can automatically detect the oil and gas concentration at the exhaust port of the oil storage tank have emerged. Usually, a detection box is connected to the gas discharge port at the top of the oil tank to collect a certain amount of discharged oil and gas for detection. However, due to the relatively sealed internal space of the detection box, the collected oil and gas are not easily discharged, and the remaining oil and gas in the detection box will affect the next detection result.

[0004] Therefore, it is necessary to provide a gas monitoring device for an oil tank to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a gas monitoring device for an oil tank to solve the technical problems mentioned in the background art.

[0006] The utility model adopts the following technical solutions:

[0007] A gas monitoring device for an oil tank, comprising:

[0008] A dilution chamber, with a collection space arranged inside the dilution chamber. An air inlet connected to the exhaust port of the oil tank is arranged on one side of the dilution chamber, and an air outlet is arranged at the top of the dilution chamber;

[0009] An exhaust mechanism is arranged in the collection space. The exhaust mechanism includes a driving component and a movable plate. The movable plate is slidably connected to the inner wall of the dilution chamber, and the driving end of the driving component is connected to the movable plate to drive the movable plate to slide up and down;

[0010] A monitoring component, including a detection probe for detecting the gas concentration. The detection probe penetrates the dilution chamber, and the bottom end of the detection probe is flush with the top wall of the dilution chamber.

[0011] Further, the driving assembly includes a screw rod, the screw rod is rotatably connected to the top wall and the bottom wall of the dilution bin, and the screw rod penetrates the movable plate.

[0012] Furthermore, the drive assembly also includes a drive motor, which is arranged on the bottom wall of the dilution bin and below the movable plate. The output shaft of the drive motor is provided with a first bevel gear, and the bottom end of the screw rod is sleeved with a second bevel gear, and the first bevel gear is meshedly connected with the second bevel gear.

[0013] Furthermore, a ventilation opening is provided on one side of the dilution bin where the air inlet is provided, a fan is embedded in the ventilation opening, and a side of the fan facing the collection space is flush with a side wall of the dilution bin.

[0014] Furthermore, a metering pump is connected to a side of the air inlet facing away from the collecting space, and an outlet end and an inlet end of the metering pump are respectively connected to the air inlet and the exhaust port of the oil tank.

[0015] Furthermore, the inlet end of the metering pump is connected to a first solenoid valve, one end of the first solenoid valve away from the metering pump is fixedly connected to the exhaust port of the oil tank, and a filter cotton is provided at the connection between the first solenoid valve and the exhaust port of the oil tank;

[0016] A second solenoid valve is fixedly connected to a side of the gas outlet facing away from the collecting space.

[0017] Furthermore, the monitoring component also includes a detection host, which is arranged at the top of the dilution chamber, the bottom of the detection host is electrically connected to the detection probe, and the detection host has a built-in microprocessor to process and analyze the monitoring data of the detection probe.

[0018] Furthermore, an alarm is connected to one side of the detection host, a signal conversion line is provided on a side of the detection host away from the alarm, and the signal conversion line is connected to a gateway.

[0019] Furthermore, a main control board is disposed on one side of the dilution bin, the main control board is electrically connected to the monitoring component, and a display screen is disposed on one end surface of the main control board away from the dilution bin.

[0020] Furthermore, the bottom wall of the dilution bin is provided with a plurality of limit pads, and the top of the limit pads is higher than the top of the driving motor;

[0021] A serpentine heating tube is arranged around a plurality of the limit pads, a power plug is arranged at one end of the serpentine heating tube, and the power plug is electrically connected to the main control board.

[0022] Beneficial effects:

[0023] The utility model provides a gas monitoring device for an oil tank. The dilution chamber provides a collection space for detecting petroleum gas. The air inlet is arranged on the side wall, and the air outlet is arranged at the top of the dilution chamber. Through the lifting movement of the movable plate in the exhaust assembly, the space in the upper half of the collection space separated by the movable plate can be compressed. At the same time, the bottom end of the detection probe does not protrude from the top wall of the dilution chamber, so that the movable plate can drive the exhaust by rising and closely adhering to the top wall of the dilution chamber, effectively discharging the residual oil gas in the collection space through the air outlet at the top, ensuring the accuracy and reliability of each detection. Brief Description of the Drawings

[0024] Figure 1 It is a partial schematic diagram of a gas monitoring device for an oil tank according to the utility model;

[0025] Figure 2 It is a partial schematic diagram of a gas monitoring device for an oil tank according to the utility model in another direction;

[0026] Figure 3 It is a front view overall structural schematic diagram of a gas monitoring device for an oil tank according to the utility model;

[0027] Wherein: 1. Dilution chamber; 101. Collection space; 102. Air inlet; 103. Air outlet; 2. Exhaust mechanism; 21. Driving assembly; 211. Lead screw; 212. Driving motor; 213. First bevel gear; 214. Second bevel gear; 22. Movable plate; 3. Monitoring assembly; 31. Detection probe; 32. Detection host; 33. Alarm; 34. Signal conversion line; 35. Gateway; 4. Fan; 5. Metering pump; 6. First solenoid valve; 7. Filter cotton; 8. Second solenoid valve; 9. Main control board; 10. Limit pad; 11. Serpentine heating tube.

[0028] The realization, functional features and advantages of the purpose of the utility model will be further described with reference to the embodiments and the accompanying drawings. Specific Embodiments

[0029] It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically and clearly defined.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0033] Refer to Figures 1 to 3, the present utility model provides a gas monitoring device for an oil tank, comprising: a dilution chamber 1, within which a collection space 101 is provided. An air inlet 102 connected to the exhaust port of the oil tank is provided on one side of the dilution chamber 1, and an air outlet 103 is provided at the top of the dilution chamber 1; an exhaust mechanism 2 is arranged within the collection space 101, the exhaust mechanism 2 comprising a driving assembly 21 and a movable plate 22, the movable plate 22 being slidably connected to the inner wall of the dilution chamber 1, and the driving end of the driving assembly 21 being connected to the movable plate 22 to drive the movable plate 22 to slide up and down; a monitoring assembly 3, comprising a detection probe 31 for detecting the gas concentration, the detection probe 31 penetrating the dilution chamber 1, and the bottom end of the detection probe 31 being flush with the top wall of the dilution chamber 1.

[0034] In the above embodiment, within the dilution chamber 1, the oil and gas discharged from the oil tank can be collected and diluted with air to dilute the high-concentration oil and gas for further testing.

[0035] The movable plate 22 is slidably connected to the inner wall of the dilution chamber 1. The movable plate 22 acts as a piston, separating the collection space 101 into upper and lower parts. The upper part contains a mixed gas with oil and gas. The driving end of the driving assembly 21 is drivingly connected to the movable plate 22, and the driving assembly 21 can drive the movable plate 22 to slide up and down. Thus, after the detection is completed, the residual oil and gas within the collection space 101 can be effectively discharged to ensure the accuracy of the detection.

[0036] The bottom end of the detection probe 31 does not protrude beyond the top wall of the dilution chamber 1, enabling the movable plate 22 to drive the exhaust by rising and closely adhering to the top wall of the dilution chamber 1, effectively discharging the residual oil and gas within the collection space 101 through the air outlet 103 at the top, ensuring the accuracy and reliability of each detection.

[0037] In one embodiment, the driving assembly 21 comprises a lead screw 211, the lead screw 211 being rotatably connected to the top wall and the bottom wall of the dilution chamber 1, and the lead screw 211 penetrating the movable plate 22. The driving assembly 21 further comprises a driving motor 212, the driving motor 212 being arranged at the bottom wall of the dilution chamber 1 and below the movable plate 22. A first bevel gear 213 is provided on the output shaft of the driving motor 212, and a second bevel gear 214 is sleeved on the bottom end of the lead screw 211, and the first bevel gear 213 is meshed with the second bevel gear 214.

[0038] In the above embodiments, the driving motor 212 is disposed on the bottom wall of the dilution chamber 1. The first bevel gear 213 on its output shaft meshes with the second bevel gear 214 at the bottom end of the lead screw 211. When the driving motor 212 is started, the first bevel gear 213 rotates to drive the second bevel gear 214 to rotate synchronously, thereby causing the lead screw 211 to rotate. Since the lead screw 211 penetrates through the movable plate 22 and forms a threaded fit with the movable plate 22, the rotation of the lead screw 211 will drive the movable plate 22 to slide up and down inside the dilution chamber 1. The structure is simple and the operation is convenient. Moreover, through the threaded fit between the lead screw 211 and the movable plate 22, the stable lifting of the movable plate 22 can be achieved, thus ensuring the smooth progress of exhaust gas.

[0039] In addition, in order to ensure the stability of the rotation of the lead screw 211, bearing seats can also be embedded on the top wall and the bottom wall of the dilution chamber 1, and the two ends of the lead screw 211 are respectively rotatably connected to the bearing seats.

[0040] In one embodiment, a ventilation opening is provided on one side of the dilution chamber 1 where the air inlet 102 is provided, and a blower 4 is embedded in the ventilation opening. The side of the blower 4 facing the collection space 101 is flush with the side wall of the dilution chamber 1.

[0041] In the above embodiments, an air flow is formed inside the gas dilution chamber 1. When the gas to be measured enters the chamber, it can be mixed with the air brought in by the blower 4 to achieve the purpose of uniform dilution. The side of the blower 4 facing the collection space 101 is flush with the side wall of the dilution chamber 1, which can make the movable plate 22 closely fit with the inner peripheral wall of the dilution chamber 1 without forming a gap, ensuring the effective discharge of the residual oil and gas in the collection space 101.

[0042] In one embodiment, a metering pump 5 is connected to the side of the air inlet 102 facing away from the collection space 101. The outlet end and the inlet end of the metering pump 5 are respectively connected to the air inlet 102 and the oil tank exhaust port.

[0043] In the above embodiments, the metering pump 5 can accurately control the oil and gas flow rate entering the dilution chamber 1 from the oil tank exhaust port, and can also actively suck the gas discharged from the oil tank exhaust port into the dilution chamber 1. Furthermore, the mixing ratio of the oil and gas and the air can be adjusted according to actual needs, making the dilution process more precisely controllable. It is applicable to occasions where continuous testing or analysis of oil and gas with possible concentration changes is required, ensuring that accurate and repeatable results can be obtained for each detection.

[0044] In one embodiment, the inlet end of the metering pump 5 is connected to a first solenoid valve 6, the end of the first solenoid valve 6 facing away from the metering pump 5 is fixedly connected to the oil tank exhaust port, and a filter cotton 7 is provided at the connection between the first solenoid valve 6 and the oil tank exhaust port; the side of the air outlet 103 facing away from the collecting space 101 is fixedly connected to a second solenoid valve 8.

[0045] In the above embodiment, the setting of the first solenoid valve 6 can accurately control the timing and flow rate of oil and gas entering the dilution chamber 1 from the exhaust port of the oil tank, and the setting of the filter cotton 7 can effectively filter out impurities in the oil and gas, avoiding the damage of the impurities to the detection equipment or affecting the accuracy of the detection results. The setting of the second solenoid valve 8 can control whether the air outlet 103 of the dilution chamber 1 is open, further ensuring the controllability of the detection process. In addition, the opening and closing of the first solenoid valve 6 and the second solenoid valve 8 can be programmed and controlled according to actual detection requirements, realizing the automation and intelligence of the detection process, and improving the detection efficiency and accuracy.

[0046] In one embodiment, the monitoring component 3 further includes a detection host 32, which is disposed at the top of the dilution bin 1, and the bottom of the detection host 32 is electrically connected to the detection probe 31, and the detection host 32 has a built-in microprocessor to process and analyze the monitoring data of the detection probe 31. An alarm 33 is connected to one side of the detection host 32, and a signal conversion line 34 is disposed on the side of the detection host 32 away from the alarm 33, and the signal conversion line 34 is connected to a gateway 35.

[0047] In the above embodiment, the detection host 32 exchanges data with the detection probe 31 through electrical connection, receives the gas concentration data detected by the detection probe 31 in real time, and processes and analyzes these data with a built-in microprocessor to accurately judge the concentration of oil and gas in the oil tank. Once the detected gas concentration exceeds the preset safety threshold, the detection host 32 will immediately start the alarm 33, send out an alarm signal, and remind the staff to deal with it in time. At the same time, the detection host 32 is also connected to the gateway 35 through the signal conversion line 34, and can transmit the detection data to the remote control center in real time, realize remote monitoring, centralized data management and data analysis, and further improve the intelligence and automation level of oil tank gas detection.

[0048] In one embodiment, a main control board 9 is disposed on one side of the dilution chamber 1 , the main control board 9 is electrically connected to the monitoring component 3 , and a display screen is disposed on one end surface of the main control board 9 facing away from the dilution chamber 1 .

[0049] In the above embodiment, the main control board 9 serves as the core control unit of the entire detection system and is responsible for coordinating the working states of each component. Through electrical connection, the main control board 9 can receive the data feedback from the monitoring component 3 in real time, and can also control the actuators such as the driving motor 212, the blower 4, the metering pump 5, the first solenoid valve 6 and the second solenoid valve 8 according to the preset programs and parameters, so as to realize the automation and intelligence of the processes such as the dilution, collection, detection and discharge of oil and gas, and display them through the display screen. In addition, the main control board 9 also has a fault self-diagnosis function. Once a fault or abnormal condition occurs inside the system is detected, corresponding emergency measures will be immediately started to ensure the stable operation and safety of the detection system.

[0050] In one embodiment, a plurality of limit pads 10 are provided on the bottom wall of the dilution chamber 1, and the top ends of the limit pads 10 are higher than the top end of the driving motor 212; a serpentine heating pipe 11 is disposed around between the plurality of limit pads 10, and one end of the serpentine heating pipe 11 is provided with a power plug, and the power plug is electrically connected to the main control board 9.

[0051] In the above embodiment, a plurality of limit pads 10 are provided on the bottom wall of the dilution chamber 1, and the top ends thereof are also higher than the top end of the driving motor 212. The main function is to play a role in limiting and supporting the movable plate 22, preventing the movable plate 22 from sliding down excessively. In order to keep the temperature in the dilution chamber 1 constant, prevent errors caused by temperature changes of the oil and gas, and ensure the stability of detection, a serpentine heating pipe 11 is disposed around between the plurality of limit pads 10. One end of the serpentine heating pipe 11 is provided with a power plug, which is electrically connected to the main control board 9, so that the working state of the heating pipe can be accurately controlled according to actual needs, and the automatic regulation and maintenance of the temperature are realized.

[0052] The detection process of the equipment is as follows: the serpentine heating pipe 11 is powered on for preheating for five minutes, and the preheating state is indicated by the flashing of the indicator light. After the preheating is completed, the indicator light is turned off, and the equipment enters the normal working state. The metering pump 5 aspirates gas for three minutes (the specific time can be further adjusted). At this time, the first solenoid valve 6 and the second solenoid valve 8 are in the open state. After the metering pump 5 finishes aspirating, both the first solenoid valve 6 and the second solenoid valve 8 are closed, and the blower 4 is started. After the blower 4 works for one minute (the specific time can be further adjusted), the detection host 32 detects the gas data through the detection probe 31 and reads and analyzes it, and uploads it to the remote background through the gateway 35. If the detection host 32 detects that the gas concentration reaches the set threshold, the alarm 33 emits sound and light.

[0053] After the detection is completed, the second solenoid valve 8 is opened, the motor is started to drive the movable plate 22 to rise and closely adhere to the top wall of the dilution chamber 1, driving the residual oil and gas to be discharged from the second solenoid valve 8 through the top air outlet 103, and then driving the movable plate 22 to return to its original position.

[0054] After the device completes the above operation once, repeat the steps like this to achieve continuous detection.

[0055] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A gas monitoring device for a petroleum tank, characterized in that: include: A dilution bin, wherein a collecting space is provided inside the dilution bin, an air inlet connected to the exhaust port of the oil tank is provided on one side of the dilution bin, and an air outlet is provided at the top of the dilution bin; An exhaust mechanism is provided in the collection space, and the exhaust mechanism includes a driving assembly and a movable plate, the movable plate is slidably connected to the inner wall of the dilution bin, and the driving end of the driving assembly is connected to the movable plate to drive the movable plate to slide up and down; The monitoring component comprises a detection probe for detecting gas concentration, wherein the detection probe penetrates the dilution bin, and the bottom end of the detection probe is flush with the top wall of the dilution bin.

2. A gas monitoring device for a petroleum tank according to claim 1, characterized in that: The driving assembly comprises a screw rod, the screw rod is rotatably connected to the top wall and the bottom wall of the dilution bin, and the screw rod penetrates the movable plate.

3. A gas monitoring device for a petroleum tank according to claim 2, characterized in that: The driving assembly also includes a driving motor, which is arranged on the bottom wall of the dilution bin and below the movable plate. The output shaft of the driving motor is provided with a first bevel gear, and the bottom end of the screw rod is sleeved with a second bevel gear, and the first bevel gear is meshedly connected with the second bevel gear.

4. The gas monitoring device for petroleum tanks according to claim 1, characterized in that: A ventilation opening is provided on one side of the dilution bin where the air inlet is provided, and a fan is embedded in the ventilation opening. The side of the fan facing the collection space is flush with the side wall of the dilution bin.

5. The gas monitoring device for petroleum tanks according to claim 1, characterized in that: A metering pump is connected to the side of the air inlet facing away from the collecting space, and the outlet end and the inlet end of the metering pump are respectively connected to the air inlet and the exhaust port of the oil tank.

6. A gas monitoring device for a petroleum tank according to claim 5, characterized in that: The inlet end of the metering pump is connected to a first solenoid valve, one end of the first solenoid valve away from the metering pump is fixedly connected to the exhaust port of the oil tank, and a filter cotton is arranged at the connection between the first solenoid valve and the exhaust port of the oil tank; A second solenoid valve is fixedly connected to a side of the gas outlet facing away from the collecting space.

7. The gas monitoring device for petroleum tanks according to claim 1, characterized in that: The monitoring component also includes a detection host, which is arranged at the top of the dilution chamber. The bottom of the detection host is electrically connected to the detection probe, and the detection host has a built-in microprocessor to process and analyze the monitoring data of the detection probe.

8. A gas monitoring device for a petroleum tank according to claim 7, characterized in that: An alarm is connected to one side of the detection host, a signal conversion line is arranged on a side of the detection host away from the alarm, and the signal conversion line is connected to a gateway.

9. The gas monitoring device for petroleum tanks according to claim 3, characterized in that: A main control board is arranged on one side of the dilution bin, the main control board is electrically connected to the monitoring component, and a display screen is arranged on one end surface of the main control board away from the dilution bin.

10. A gas monitoring device for a petroleum tank according to claim 9, characterized in that: The bottom wall of the dilution bin is provided with a plurality of limit pads, and the top of the limit pads is higher than the top of the driving motor; A serpentine heating tube is arranged around a plurality of the limit pads, a power plug is arranged at one end of the serpentine heating tube, and the power plug is electrically connected to the main control board.

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