Shock-resistant vortex street gas flow sensor for gas station

Abstract

The utility model discloses an anti-shock vortex street gas flow sensor for a gas station, which comprises a shell, a gas guide assembly is arranged in an inner cavity of the shell and comprises a gas guide column installed in the shell, the center of the gas guide column is through and is provided with a first through cavity, a transmission column is installed above the gas guide column, and the transmission column is provided with a second through cavity. The transmission column is provided with a second through cavity matched with the first through cavity of the gas guide column, a flow sensor is arranged at an upper end opening of the transmission column, through the gas guide assembly in the shell, by means of cooperation and rotary adjustment of the gas guide column and the through cavity of the transmission column, the gas flow path is precisely planned, complex flow state impact is avoided, and the measurement error is greatly reduced; and the transmission column and the flow sensor as well as the air guide column and the shell are spirally mounted, so that all parts can be easily disassembled and replaced through rotation during maintenance, the maintenance cost and time are reduced, and the maintainability of equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas flow measurement technical field especially relates to be used for gas station's anti shock formula vortex gas flow sensor. BACKGROUND

[0002] In the oil gas recovery system of gas station, accurate measurement of gas flow is very important for normal operation of the system and environmental protection.

[0003] At present, the traditional flow sensor is directly exposed to the gas flow, and the gas contacts the sensor without fine guidance, which leads to many problems in the complex environment of gas station, that is, due to the complex gas flow in the gas station, there are turbulent flow, vortex and other unstable flow states, and the gas without effective guidance directly impacts the sensor, which is easy to cause measurement error, when the airflow interference of other equipment operation, the directly exposed sensor is difficult to accurately distinguish the effective measurement of gas flow, leading to large fluctuation of measurement data, and the real gas flow in the oil gas recovery system cannot be accurately reflected.

[0004] Therefore, we provide an anti-vibration vortex gas flow sensor for gas stations. UTILITY MODEL CONTENT

[0005] The utility model aims at the above-mentioned technical problem, provides anti-vibration vortex gas flow sensor for gas station, reaches the effect of through type core pulling, integral molding.

[0006] Therefore, the utility model provides an anti-vibration vortex gas flow sensor for gas stations, which comprises a shell, a gas guiding assembly is arranged in the inner cavity of the shell, the gas guiding assembly comprises a gas guiding column mounted in the shell, the gas guiding column is centrally penetrated and provided with a first through cavity, a transmission column is mounted above the gas guiding column, the transmission column is provided with a second through cavity matched with the first through cavity of the gas guiding column, and a flow sensor is arranged at the upper end of the transmission column.

[0007] Preferably, the transmission column is rotated clockwise for three turns, so that the stud at the bottom of the transmission column can move downward in the inner cavity of the gas guiding column, until the second through cavity at one end of the transmission column is coincided with the first through cavity of the gas guiding column, so as to guide the gas to move upward from the second through cavity of the transmission column to the flow sensor.

[0008] Preferably, the first through cavity of the gas guiding column is arranged at the center of the air inlet and the air outlet on the left and right sides of the shell.

[0009] Preferably, the outer wall of the upper end of the transmission column is provided with external threads, the flow sensor is spirally mounted on the upper end of the transmission column, the inner cavity of the shell is provided with a screw cavity, and the gas guiding column is spirally mounted on the shell.

[0010] Preferably, the shell is adapted to be provided with a cover plate side wall provided with an airflow guide mark.

[0011] Preferably, the flow sensor is made of PPS polyphenylisocyanate, the O-ring is made of fluorine rubber, the temperature range is -30℃~+60℃, and the maximum pressure is 2bar.

[0012] Preferably, the flow sensor has an IP68 protection level and can be washed with water to prevent dust and water from entering.

[0013] Compared with the prior art, the anti-seismic vortex gas flow sensor for gas stations has the following beneficial effects:

[0014] The utility model discloses a gas guiding assembly in the shell, and the transmission column and the guide air column are matched with the cavity and are adjusted by rotation, the airflow path is accurately planned, the complex flow state impact is avoided, the measurement error is greatly reduced, and the data accurately reflects the real flow.

[0015] The utility model discloses that the transmission column and the flow sensor, the guide air column and the shell are all spiral installations, and when maintaining, each component can be easily disassembled and replaced by rotation, maintenance cost and time are reduced, and equipment maintainability is improved.

[0016] The utility model discloses that the flow sensor adopts PPS polyphenylisocyanate material, the temperature application range is wide, the pressure-bearing capacity is strong, and has IP68 protection level and can be washed, can be stably and reliably operated in the harsh environment of gas station.

[0017] The parts not involved in the device are the same as or can be realized by the prior art, the utility model has the advantages of simple structure and convenient operation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall view of the utility model;

[0019] Figure 2 It is the flow sensor installation structure schematic view of the utility model;

[0020] Figure 3 It is the gas guiding assembly installation structure schematic view of the utility model;

[0021] Figure 4 It is the shell internal structure schematic view of the utility model.

[0022] In the drawing: 1, shell;11, air inlet;12, air outlet;13, screw cavity;2, cover plate;21, airflow guide mark;3, gas guiding assembly;31, transmission column;311, second cavity;312, external thread;313, stud;32, guide air column;321, first cavity;4, flow sensor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Example 1: An anti-vibration vortex gas flow sensor for gas stations, such as... Figures 1-4 As shown, the device includes a housing 1, and a gas guiding assembly 3 is provided in the inner cavity of the housing 1. The gas guiding assembly 3 includes a gas guiding column 32 installed in the housing 1. The gas guiding column 32 has a first through cavity 321 through its center. A transmission column 31 is installed above the gas guiding column 32. The transmission column 31 has a second through cavity 311 that is adapted to the first through cavity 321 of the gas guiding column 32. A flow sensor 4 is provided at the upper port of the transmission column 31.

[0026] In use, first, the air guide column 32 is screwed through its outer wall with the screw cavity 13 of the inner cavity of the shell, installed inside the shell 1, to ensure that the first through cavity 321 of the air guide column 32 is accurately located at the center of the left and right sides of the shell 1 air inlet 11 and air outlet 12, to lay the foundation for the smooth guidance of the subsequent gas, the flow sensor 4 is screwed through the outer thread 312 of the outer wall of the upper end of the transmission column 31 to the upper end of the transmission column 31, the assembly of the flow sensor 4 and the transmission column 31 is completed, the assembled transmission column 31 is installed above the air guide column 32, the threaded column 313 at the bottom of the transmission column 31 is located in the inner cavity of the air guide column 32, and the installation structure of the gas guiding assembly 3 in the inner cavity of the shell 1 is preliminarily built, the cover plate 2 with the airflow guide mark 21 is fitted and installed on the shell 1, the installation of the entire sensor is completed, according to the actual gas flow situation and measurement requirements of the gas station site, the rotation adjustment amount of the transmission column 31 is determined, for example, when the gas flow is expected to be large, the transmission column 31 can be rotated clockwise for three turns first, so that the threaded column 313 at the bottom of the transmission column 31 moves downward in the inner cavity of the air guide column 32, the second through cavity 311 at one end of the transmission column 31 coincides with the first through cavity 321 of the air guide column 32, thereby preliminarily setting the path and flow adjustment state of the gas entering the flow sensor 4, when the gas station oil vapor recovery system is running, the gas enters from the air inlet 11 on one side of the shell 1, the entering gas passes through the first through cavity 321 of the air guide column 32, and since the second through cavity 311 of the transmission column 31 coincides with the first through cavity 321 of the air guide column 32 at this time, the gas moves upward from the second through cavity 311 of the transmission column 31 to the flow sensor 4, the flow sensor 4 measures the flow of the passing gas based on the vortex effect, generates a corresponding electrical signal, the electrical signal is processed and converted, and gas flow data is output for monitoring and control of the gas station oil vapor recovery system.

[0027] At the same time, a rubber buffer ring is added at the threaded connection between the outer wall of the air guide column 32 and the screw cavity 13 of the inner cavity of the shell, the thickness of the ring can be about 2-3 mm, when the device is shaken, the rubber buffer ring can effectively absorb the vibration energy, reduce the relative displacement and friction between the air guide column 32 and the shell 1 due to vibration, avoid loosening of the air guide column 32 due to vibration, and ensure that the first through cavity 321 opening is always accurately located at the center of the air inlet 11 and the air outlet 12, maintaining smooth guidance of the gas and improving the shock resistance of the device.

[0028] As shown in Figures 1-4 , the transmission column 31 is rotated clockwise for three turns, so that the threaded column 313 at the bottom of the transmission column 31 can move downward in the inner cavity of the air guide column 32, until the second through cavity 311 at one end of the transmission column 31 coincides with the first through cavity 321 of the air guide column 32, to guide the gas to move upward from the second through cavity 311 of the transmission column 31 to the flow sensor 4.

[0029] When facing the variable gas flow rate and pressure in the oil station gas recovery system, the rotating transmission column 31 adjusts the degree of coincidence of the cavity opening, which can control the amount and speed of gas entering the flow sensor 4. When the gas flow rate is too fast, the coincidence area is appropriately reduced to slow down the gas entering speed, preventing the flow sensor 4 from being damaged or measuring inaccurately due to excessive gas impact; when the gas flow rate is too slow, the coincidence area is increased to ensure that enough gas enters for accurate measurement, improving the adaptability and stability of the flow sensor 4 under different working conditions.

[0030] As shown in Figures 1-4 , the first through cavity 321 opening of the gas guide column 32 is located at the center of the left and right sides of the housing 1.

[0031] As shown in Figures 1-4 , the outer wall of the upper end of the transmission column 31 is provided with external threads 312, the flow sensor 4 is screw mounted on the upper end of the transmission column 31, and the inner cavity of the housing 1 is provided with a screw cavity 13. The gas guide column 32 is screw mounted on the housing 1, and the connection of each part is tight and can be disassembled through the screw mounting method. When installing, you only need to screw the flow sensor 4 to the upper end of the transmission column 31, and screw the gas guide column 32 into the screw cavity 13 of the housing 1. When the equipment is maintained or overhauled, they can also be easily disassembled, which is convenient for replacing, repairing or calibrating individual components. Without complex tools and operation procedures, it effectively reduces the maintenance cost and time cost.

[0032] As shown in Figures 1-4 , the side wall of the cover plate 2 adapted with the housing 1 is provided with an airflow guide mark 21. When in use, the airflow guide mark 21 can provide an intuitive airflow direction indication for the workers, which is convenient for them to quickly understand the general flow direction of the airflow during daily inspection and maintenance, and timely discover abnormal airflow conditions.

[0033] Example two: an anti-seismic vortex gas flow sensor for gas stations, as shown in Figures 1-4 , the material of the flow sensor 4 is PPS polyphenyl compound, which has strong corrosion and oxidation resistance, and the applicable temperature range is -30℃~+60℃, and the maximum pressure is 2bar.

[0034] The flow sensor 4 has an IP68 protection level and can be washed to prevent dust and water from entering.

[0035] In use, due to the large change in the ambient temperature of the gas station, it can experience low temperature in winter and high temperature in summer, through the applicable temperature range of -30℃~+ 60℃, the flow sensor 4 can be ensured to work normally under different seasons and climate conditions, and the performance will not be affected due to too high or too low temperature, the measurement error caused by the change in the ambient temperature is reduced, and meanwhile, since it is IP68 protection level waterproof, it means that the flow sensor 4 is completely prevented from foreign matter invasion, and dust can be completely prevented from entering, even in the case of a certain depth or long time soaking under water, normal operation can also be ensured. This makes the flow sensor 4 be able to adapt to various complex working environments of the gas station.

[0036] The above merely describes a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, should be covered within the protection scope of the present application.

Claims

1. A shock resistant vortex gas flow sensor for use in a fuel dispensing station characterized by: The shell (1) is internally provided with a gas guiding assembly (3), the gas guiding assembly (3) comprises a gas guiding column (32) mounted in the shell (1), the gas guiding column (32) is centrally provided with a first through cavity (321), a transmission column (31) is mounted above the gas guiding column (32), the transmission column (31) is provided with a second through cavity (311) matched with the first through cavity (321) of the gas guiding column (32), and a flow sensor (4) is arranged at the upper end of the transmission column (31).

2. The shock-proof vortex gas flow sensor for a gas station according to claim 1, wherein The transmission column (31) is rotated clockwise for three turns, so that the stud (313) at the bottom of the transmission column (31) can move downward in the inner cavity of the gas guiding column (32), until the second through cavity (311) at one end of the transmission column (31) coincides with the first through cavity (321) of the gas guiding column (32), so as to guide the gas to move upward from the second through cavity (311) of the transmission column (31) to the flow sensor (4).

3. The shock-proof vortex gas flow sensor for gas stations according to claim 1, characterized in that, The first through cavity (321) of the gas guiding column (32) is centrally arranged at the air inlet (11) and the air outlet (12) of the shell (1).

4. The shock-proof vortex gas flow sensor for gas stations according to claim 1, characterized in that, The outer wall of the upper end of the transmission column (31) is provided with external threads (312), the flow sensor (4) is screw-mounted on the upper end of the transmission column (31), the inner cavity of the shell (1) is provided with a screw cavity (13), and the gas guiding column (32) is screw-mounted on the shell (1).

5. The shock-proof vortex gas flow sensor for gas stations according to claim 1, characterized in that, The side wall of the cover plate (2) matched with the shell (1) is provided with an airflow guide mark (21).

6. The shock-proof vortex gas flow sensor for gas stations according to claim 4, characterized in that, The flow sensor (4) is made of PPS polyphenylsiloxane, has a temperature range of -30℃ to +60℃, and a maximum pressure of 2bar.

7. The shock-proof vortex gas flow sensor for gas stations according to claim 6, characterized in that, The flow sensor (4) has an IP68 protection level, can be washed with water, and is used for preventing dust and water from entering.

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