Hydrogen dispenser hydrogen flow regulation detection device

Abstract

The application relates to a hydrogenation flow adjusting and detecting device of a hydrogenation machine, which is applied to the technical field of hydrogenation equipment and comprises a detecting pipeline connected to a gas outlet of the hydrogenation machine, wherein a detecting assembly is arranged in the detecting pipeline, the detecting assembly comprises a plurality of connecting pieces fixed to the inner wall of the detecting pipeline, the connecting pieces are uniformly distributed along the circumference of the detecting pipeline, a strain piece is arranged on the connecting piece, a wind ball is arranged on the end of the connecting piece away from the inner wall of the detecting pipeline, an adjusting valve is arranged between the detecting pipeline and the hydrogenation machine, the adjusting valve is signal-connected with the strain piece, and hydrogen gas in the detecting pipeline flows from the end close to the adjusting valve to the end away from the adjusting valve. The application has the effect that when the hydrogenation machine works, hydrogen gas rushes into the detecting pipeline, the wind ball is impacted by airflow and moves, the connecting piece and the strain piece are deformed, the current air pressure is measured, and then the hydrogen gas flow rate is measured. The area of the windward surface is constant during measurement, the backflow phenomenon is not prone to occurring, and the accuracy of the detection of the detecting device is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of hydrogenation equipment, and in particular to a hydrogenation flow regulation detection device of a hydrogenation machine. BACKGROUND

[0002] The hydrogenation machine is a special device for providing compressed hydrogen fuel or natural gas mixed hydrogen fuel filling service for automobiles, and is also provided with functions of metering and pricing. In the process of hydrogenation of the hydrogenation machine, a detection device is usually arranged on the hydrogenation machine, so that an operator can detect the hydrogen flow rate output by the hydrogenation machine, thereby controlling the hydrogenation amount and realizing the metering function.

[0003] A hydrogenation flow detection device is provided in the related art. For example, a flowmeter is disclosed in Chinese Patent No. CN115962808A, which comprises a pipe body, a support platform, a flange and a throttling element. The pipe body comprises a pipe main body and a pressure taking portion. A first channel is formed in the pipe main body in the axial direction. The outer peripheral wall of the pipe main body is provided with the pressure taking portion, which extends away from the pipe main body along the radial direction of the pipe body. Two second channels are formed in the pressure taking portion along the radial direction of the pipe main body. The two second channels are arranged in the axial direction of the pipe main body, and one end of the second channel is communicated with the first channel. The flange is installed at the axial ends of the pipe body. The throttling element is arranged in the first channel of the pipe main body, and is located between the two second channels in the axial direction of the first channel.

[0004] However, when the flowmeter in the related art works, hydrogen gas passes through the inside of the flowmeter, and the hydrogen gas collides with the throttling element in the flowmeter, thereby causing backflow. The backflow hydrogen gas collides with the forward flowing hydrogen gas, which affects the flow rate of the forward flowing hydrogen gas, and causes errors in the hydrogen flow rate detected by the flowmeter. SUMMARY

[0005] In order to improve the problem that the flowmeter in the related art is prone to hydrogen backflow when detecting the flow rate of hydrogen, which collides with the forward flowing hydrogen gas and affects the accuracy of the flow detection of the hydrogen output by the hydrogenation machine, the application provides a hydrogenation flow regulation detection device of a hydrogenation machine.

[0006] The hydrogenation flow regulation detection device of the hydrogenation machine provided by the application adopts the following technical scheme:

[0007] A hydrogenation flow regulation detection device of a hydrogenation machine is used for flow detection of the hydrogenation machine, which comprises a detection pipeline connected to the gas outlet of the hydrogenation machine. A detection assembly is arranged in the detection pipeline. The detection assembly comprises a plurality of connecting pieces fixed to the inner wall of the detection pipeline, and the connecting pieces are uniformly distributed in the circumferential direction of the detection pipeline.

[0008] The connecting piece is provided with a strain gauge, and the end of the connecting piece away from the inner wall of the detection pipeline is provided with a wind ball;

[0009] The detection pipeline is provided with an adjusting valve between the detection pipeline and the hydrogen filling machine, the adjusting valve is connected with the strain gauge, and the hydrogen in the detection pipeline flows from the end close to the adjusting valve to the end away from the adjusting valve.

[0010] By adopting the above technical scheme, the hydrogen flow generated in the hydrogen filling process of the hydrogen filling machine impacts on the wind ball, the wind ball moves towards the direction away from the airflow under the impact force, and the connecting piece is fixed on the inner wall of the detection pipeline, so that the connecting piece is bent when the wind ball moves under the force, the strain gauge is bent, and the wind pressure at the current position is calculated.

[0011] In the calculation process, the wind ball adopts a spherical structure, so that the area of the windward surface does not change no matter how the wind ball deflects and moves, and the backflow phenomenon is not easy to occur, thereby effectively improving the accuracy of the flow detection of the flow adjusting and detecting device.

[0012] Optionally, the wind ball and the connecting piece are connected through a connecting assembly, the connecting assembly comprises a connecting rod fixed at the end of the connecting piece away from the inner wall of the detection pipeline, the end of the connecting rod away from the connecting piece is inserted into the wind ball along the radial direction of the wind ball, and the connecting rod is fixed with the wind ball.

[0013] By adopting the above technical scheme, the connecting rod connects the wind ball with the connecting piece, so that the connecting piece can move with the wind ball, and the connecting piece is deformed mechanically.

[0014] Optionally, the surface of the wind ball is provided with a plurality of grooves.

[0015] By adopting the above technical scheme, the surface of the wind ball is densely provided with grooves, the windward area of the wind ball is increased without increasing the volume of the wind ball, so that the wind ball can be impacted more when the hydrogen flows, and the deformation degree of the connecting piece is enlarged, the detection precision is improved, and the detection range is expanded.

[0016] Optionally, the detection pipeline is provided with a verification mechanism, the verification mechanism is installed on the side of the detection assembly away from the adjusting valve, the verification mechanism comprises a middle verification assembly and a terminal verification assembly, and the middle verification assembly and the terminal verification assembly are arranged in sequence along the flow direction of the hydrogen.

[0017] By adopting the technical scheme, the verification mechanism is arranged in the detection pipeline, the middle verification mechanism and the end verification mechanism are arranged along the flow direction of the hydrogen, so that the flow rate of the hydrogen is detected again and finally verified, the final hydrogen flow rate is calculated according to the three verification results, and the accuracy of the detection result is improved.

[0018] Optionally, the middle verification assembly comprises a fixing ring fixed on the inner wall of the detection pipeline, a plurality of embedding holes are arranged on the fixing ring in a penetrating manner, and the embedding holes are arranged along the circumference of the fixing ring in sequence.

[0019] A thermistor head is embedded in the embedding hole, the thermistor head has a cavity inside, an electric heating wire is arranged in the cavity, a thermosensitive sensor for detecting the temperature of the electric heating wire is arranged on the fixing ring, and the thermosensitive sensor is connected with the electric heating wire.

[0020] By adopting the technical scheme, a constant current is supplied to the electric heating wire during the detection process, the resistance of the electric heating wire is constant, and the temperature of the electric heating wire is also constant. When the hydrogen flows through the detection pipeline, a certain amount of heat is taken away, and the heat loss amount is related to the flow rate of the hydrogen. In this way, the flow rate of the hydrogen can be calculated.

[0021] Optionally, a plurality of flow grooves are arranged on the fixing ring in a penetrating manner, and the flow grooves are distributed at intervals.

[0022] By adopting the technical scheme, the flow grooves are arranged on the fixing ring in a penetrating manner, the area of the fixing ring is reduced, and the situation that the hydrogen is backflowed due to the impact of the hydrogen on the surface of the fixing ring during the flow process is reduced.

[0023] Optionally, the end verification assembly comprises a support frame, the support frame is fixed on the inner wall of the detection pipeline, a flow rate fan and a rotating speed sensor are arranged on the support frame, and the rotating speed sensor is used for measuring the rotating speed of the flow rate fan.

[0024] By adopting the technical scheme, the flow rate fan is rotatably arranged on the support frame, the flow rate fan rotates along with the flow of the hydrogen, the rotating speed sensor monitors the rotating speed of the flow rate fan, the flow rate of the hydrogen at the current position is calculated, and the flow rate of the hydrogen at the current position is compared with the flow rate of the hydrogen detected by the detection assembly.

[0025] Optionally, the support frame comprises a support rod, the support rod is arranged along the radial direction of the cross section of the detection pipeline and is fixed on the inner wall of the detection pipeline, an extension rod is arranged on the surface of the support frame facing the detection assembly, the extension rod is located at the central position of the support rod and is arranged perpendicularly to the support rod, and the flow rate fan is rotatably arranged on the extension rod through a bearing assembly.

[0026] By adopting the technical scheme, the supporting rod is installed on the inner wall of the pipeline, and the flow speed fan is installed on the extension rod through the bearing assembly, so that a gap is left between the flow speed fan and the supporting rod, and the influence of the supporting rod on the rotation of the flow speed fan is reduced.

[0027] Optionally, the flow speed fan comprises a fan shaft, a bearing is sleeved on the extension rod, and the fan shaft is sleeved on the bearing.

[0028] The bearing assembly comprises a pair of end plates, and the pair of end plates are both sleeved on the extension rod, one of the end plates is located on the side of the fan shaft facing the detection assembly, the other end plate is located on the side of the fan shaft away from the detection assembly, a limiting ring is arranged on the surface of the end plate close to the fan shaft along the circumference, a gap is left between the limiting ring and the end surface of the fan shaft, the limiting ring, the end plate and the end surface of the fan shaft form an installation space, and a plurality of balls are arranged in the installation space, and the side wall of the ball abuts against the end surface of the fan shaft.

[0029] By adopting the technical scheme, the bearing is arranged between the fan shaft and the extension rod, the frictional resistance of the fan shaft in the rotation process is reduced, and the rotation process of the fan shaft is more flexible.

[0030] In addition, the balls are arranged in the installation space formed by the limiting ring, the end plate and the end surface of the fan shaft, the balls abut against the end surface of the fan shaft, the position of the flow speed fan is limited, the limiting effect is achieved, and the balls also

[0031] Optionally, the connecting piece, the connecting rod and the strain piece are covered with rubber sleeves.

[0032] By adopting the technical scheme, the connecting piece, the connecting rod and the strain piece are immersed in hydrogen for a long time, are affected by hydrogen and are prone to hydrogen embrittlement, and the service life of the detection assembly is shortened, therefore, the rubber sleeves are arranged to protect the connecting piece, the connecting rod and the strain piece, the connecting piece, the connecting rod and the strain piece are isolated from hydrogen, and the possibility of hydrogen embrittlement is reduced.

[0033] In summary, the present application has at least one of the following beneficial technical effects:

[0034] 1. During the hydrogenation process of the hydrogenation machine, the hydrogen flow generated by the hydrogenation process impacts on the windward ball, the windward ball moves towards the direction away from the flow under the impact force, and the connecting piece is fixed on the inner wall of the detection pipeline, so that the connecting piece is bent when the windward ball moves under the force, the strain piece is bent, and the wind pressure at the current position is calculated.

[0035] In the calculation process, the wind ball adopts a spherical structure, so the area of the windward surface does not change regardless of how the wind ball moves, and backflow phenomenon is not easy to occur, effectively improving the accuracy of the flow detection of the flow regulating and detecting device;

[0036] 2、In the detection process, a constant current is passed to the heating wire, the resistance of the heating wire is constant, and the temperature of the heating wire will also remain constant. In the detection pipeline, hydrogen will carry away a certain amount of heat when flowing, and the amount of heat loss is related to the flow rate of hydrogen. Therefore, the flow rate of hydrogen can be calculated;

[0037] 3、The connecting piece, connecting rod and strain gauge are immersed in hydrogen for a long time, and are easily affected by hydrogen to cause hydrogen embrittlement phenomenon, which shortens the service life of the detection assembly. Therefore, the rubber sleeve is arranged to protect the connecting piece, connecting rod and strain gauge, and isolate the connecting piece, connecting rod and strain gauge from hydrogen, thereby reducing the possibility of hydrogen embrittlement phenomenon, and prolonging the service life of the connecting piece, connecting rod and strain gauge. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is a schematic diagram of the hydrogenation machine hydrogenation flow regulating and detecting device in the embodiment of the present application.

[0039] Figure 2 is a sectional view of the hydrogenation machine hydrogenation flow regulating and detecting device in the embodiment of the present application.

[0040] Figure 3 is Figure 2 is an enlarged view of part A in FIG. 8.

[0041] Figure 4 is a partial sectional view of the detection assembly in the embodiment of the present application.

[0042] Figure 5 is a sectional view of the middle verification assembly in the embodiment of the present application.

[0043] Figure 6 is Figure 2 is an enlarged view of part B in FIG. 8.

[0044] Mark No. : 1, detection pipeline; 2, regulating valve; 3, detection assembly; 31, connecting sheet; 32, strain gauge; 33, windward ball; 331, recess; 4, connecting assembly; 41, connecting rod; 411, connecting part; 412, penetrating part; 5, verification mechanism; 51, middle verification assembly; 511, fixed ring; 5111, embedded hole; 5112, overflow groove; 512, thermal head; 5121, cavity; 513, electric heating wire; 514, thermal sensor; 52, end verification assembly; 521, support frame; 5211, supporting rod; 5212, extension rod; 522, flow rate fan; 5221, fan shaft; 5222, fan blade; 523, rotating speed sensor; 6, bearing assembly; 61, end plate; 62, limiting ring; 63, ball bearing; 7, bearing; 8, installation space; 9, rubber sleeve. DETAILED DESCRIPTION

[0045] The following will be described in detail with reference to the accompanying drawings. Figures 1-6 The application will be further described in detail.

[0046] The application discloses a hydrogenation machine hydrogenation flow regulation detection device.

[0047] Reference Figure 1 A hydrogenation machine flow regulation detection device, comprising a detection pipeline 1 connected to the gas outlet of the hydrogenation machine, a regulating valve 2 is installed at the connection between the detection pipeline 1 and the hydrogenation machine, which is used for detecting the hydrogen output by the hydrogenation machine. The regulating valve 2 in the application is a common flow regulating valve 2.

[0048] Reference Figure 2 In addition, the detection pipeline 1 is provided with a data processing module, a detection assembly 3 and a verification mechanism 5, the verification mechanism 5 comprises a middle verification mechanism 51 and an end verification assembly 52, the detection assembly 3, the middle verification assembly 51 and the end verification assembly 52 are arranged in sequence along the flow direction of hydrogen, the detection assembly 3, the middle verification assembly 51 and the end verification assembly 52 are signal connected with the data processing module, and the data processing module is signal connected with the flow regulating valve 2.

[0049] In actual detection, the detection assembly 3 preliminarily detects the hydrogen flow rate, the middle verification assembly 51 and the end verification assembly 52 re-detect and finally detect the hydrogen flow rate, and finally the data processing module comprehensively calculates the actual hydrogenation flow of the hydrogenation machine according to the detection results, thereby improving the accuracy of the detection result.

[0050] Meanwhile, the flow regulating valve 2 is signal connected with the data processing module, and the flow inside the detection pipeline 1 can be adjusted according to the flow signal received by the signal processing module, so that the hydrogen flow inside the detection pipeline 1 meets the use requirement. The data processing module in the application is a common single-chip microcomputer.

[0051] ReferenceFigure 2 In theory, since the detection assembly 3, the middle verification assembly 51 and the terminal verification assembly 52 are arranged along the flow direction of the hydrogen in the detection channel, and the detection assembly 3 is located upstream of the middle verification assembly 51 and the terminal verification assembly 52, the hydrogen flow rate detected by the detection assembly 3 should be greater than the hydrogen flow rate detected by the middle verification assembly 51, and the hydrogen flow rate detected by the middle verification assembly 51 should be greater than the hydrogen flow rate detected by the terminal verification assembly.

[0052] In actual detection, if the hydrogen flow rates detected by the detection assembly 3, the middle verification assembly 51 and the terminal verification assembly 52 are not sequentially decreased, it indicates that there is an error in the detection result, and the detection assembly 3, the middle verification assembly 51 and the terminal verification assembly 52 need to be repaired immediately.

[0053] With reference to Figure 2 and Figure 3 Specifically, the detection assembly 3 includes a plurality of connecting pieces 31, the connecting pieces 31 are elastic metal sheets, and the connecting pieces 31 are arranged perpendicularly to the detection pipeline 1 and are welded to the inner wall of the detection pipeline 1. A strain piece 32 is adhered to the connecting piece 31 by structural adhesive, so that the strain piece 32 can change shape and deform with the bending of the connecting piece 31, the wind pressure at the position is measured, and the hydrogen flow rate is calculated according to the calculation formula of the wind pressure and the wind speed.

[0054] With reference to Figure 3 and Figure 4 In addition, in order to increase the windward area, the detection assembly 3 in the embodiment of the application further includes a windward ball 33 installed on the connecting piece 31 through a connecting assembly 4, and the windward ball 33 is a foam ball. The connecting assembly 4 includes a connecting rod 41, one end of the connecting rod 41 is integrally formed on one end of the connecting piece 31 away from the inner wall of the detection pipeline 1, and the other end is inserted into the windward ball 33 along the radial direction of the windward ball 33 and is adhered and fixed to the windward ball 33.

[0055] Specifically, the connecting rod 41 includes a penetrating portion 412 and a connecting portion 411, the penetrating portion 412 adopts a cylindrical structure and penetrates into the center of the windward ball 33, and the penetrating portion 412 and the windward ball 33 are adhered and fixed by structural adhesive.

[0056] The connecting portion 411 is located between the penetrating portion 412 and the connecting piece 31, one end of the connecting portion 411 is cylindrical and is fixed coaxially with the penetrating portion 412, and the other end is flat and is connected smoothly to the connecting piece 31, and the connecting piece 31, the connecting portion 411 and the penetrating portion 412 are integrally formed, which improves the integrity of the connection between the connecting rod 41 and the connecting piece 31 and prolongs the service life of the connecting rod 41.

[0057] With reference to Figure 3 and Figure 4In order to further prolong the service life of the detection assembly 3 and the connecting assembly 4, the connecting piece 31, the connecting rod 41 and the strain gauge 32 are all coated with rubber sleeves 9 in the embodiment.

[0058] The rubber sleeves 9 isolate the hydrogen in the detection pipeline 1, so that the connecting piece 31, the connecting rod 41 and the strain gauge 32 are not easily eroded by hydrogen to cause hydrogen embrittlement, thereby prolonging the service life of the detection assembly 3 and the connecting assembly 4.

[0059] Referring to Figure 2 and Figure 3 , in actual detection, the adjusting valve 2 is adjusted to change the amount of hydrogen output by the hydrogenation machine per unit time, thereby changing the hydrogen flow rate in the detection pipeline 1, the wind ball 33 is displaced by the impact of hydrogen, driving the connecting piece 31 and the strain gauge 32 to deform, thereby measuring the current wind pressure.

[0060] Referring to Figure 2 and Figure 4 , further, in order to increase the wind area without increasing the volume of the wind ball 33, so that the strain gauge 32 accurately measures the current wind pressure according to the deformation amount of the connecting piece 31, the wind ball 33 is densely covered with grooves 331 on the surface in the embodiment.

[0061] When hydrogen flows, it impacts on the surface of the wind ball 33, and the densely covered grooves 331 on the surface of the wind ball 33 increase the wind area of the wind ball 33, so that the impact force on the wind ball 33 is enhanced, thereby amplifying the deformation degree of the connecting piece 31 and expanding the detection range of the detection assembly 3, so that the hydrogen flow rate in the detection pipeline 1 can also be detected when it is low.

[0062] Referring to Figure 2 and Figure 5 , the middle verification assembly 51 includes a fixed ring 511, and the outer ring of the fixed ring 511 is welded to the inner wall of the detection pipeline 1. A plurality of embedded holes 5111 are provided through the fixed ring 511, and a thermal head 512 is embedded in the embedded hole 5111. The fixed ring 511 and the thermal head 512 in the embodiment are both made of stainless steel, so they are not easy to cause hydrogen embrittlement even in a hydrogen-filled environment for a long time.

[0063] Referring to Figure 5 , specifically, the thermal head 512 has a cavity 5121 therein, and an electric heating wire 513 is arranged in the cavity 5121 and attached to the inner wall of the cavity 5121. The fixed ring 511 is provided with a thermal sensor 514, and the thermal sensor 514 is connected with the electric heating wire 513 by wires. In the actual detection process, a constant current is connected to the electric heating wire 513, and the electric heating wire 513 generates heat and transmits heat to the thermal head 512.

[0064] In the embodiment of the present application, since the resistance of the heating wire 513 is constant, the heat generated by the heating wire 513 is also constant. When the hydrogen flows, the airflow generated by the hydrogen blows over the surface of the thermal head 512, taking away part of the heat on the thermal head 512, so that the surface temperature of the thermal head 512 decreases, and the thermal sensor 514 monitors the temperature of the thermal head 512 in real time.

[0065] Specifically, in the embodiment of the present application, when the hydrogen in the pipeline 1 is in a static state, that is, not flowing, the temperature of the heating wire 513 is constant at 100°C. When the hydrogen flow rate increases to 1 m / s, the temperature of the heating wire 513 decreases to 98°C. With the increase of the hydrogen flow rate, the temperature of the heating wire 513 decreases accordingly, so that the data processing module can detect and calculate the hydrogen flow rate at this position according to the temperature detected by the thermal sensor 514.

[0066] The data processing module can verify the hydrogen flow rate detected by the detection assembly 3 by comparing the hydrogen flow rate at this position with the hydrogen flow rate detected by the detection assembly 3.

[0067] Referring to Figure 5 In addition, in order to reduce the backflow phenomenon caused by the hydrogen flow being hindered by the fixing ring 511, a plurality of flow grooves 5112 are provided through the fixing ring 511 in the embodiment of the present application. The flow grooves 5112 are arranged at intervals with the embedding holes 5111, which reduces the windward area of the fixing ring 511 and reduces the influence of the fixing ring 511 on the hydrogen flow.

[0068] Referring to Figure 2 and Figure 6 The end verification assembly 52 includes a flow rate fan 522, and a support frame 521 is arranged in the detection pipeline 1. The flow rate fan 522 is installed in the detection pipeline 1 through the bearing assembly 6, and a rotating speed sensor 523 for measuring the rotating speed of the flow rate fan 522 is installed on the support frame 521.

[0069] When the hydrogen flows, the flow rate fan 522 rotates, and the rotating speed sensor 523 detects the rotating speed of the flow rate fan 522 in real time, so as to calculate the hydrogen flow rate at the current position. Finally, the hydrogen flow rate at the current position is compared with the hydrogen flow rates measured at the previous two times, so as to calculate the average value of the hydrogen flow rate in the detection pipeline 1, so as to improve the accuracy of the detection of the detection device.

[0070] Referring to Figure 2 and Figure 6 Specifically, the support frame 521 includes a support rod 5211 and an extension rod 5212. The support rod 5211 is arranged along the radial direction of the detection pipeline 1 and is fixed on the inner wall of the detection pipeline 1. The extension rod 5212 is arranged along the axial direction of the detection pipeline 1 and is perpendicular to the support rod 5211 and is welded on the support rod 5211. The support rod 5211 and the extension rod 5212 are arranged in a T shape.

[0071] With reference to Figure 6 The flow rate fan 522 comprises a fan shaft 5221 sleeved on the extension rod 5212, and a plurality of fan blades 5222 are uniformly distributed on the fan shaft 5221 in the circumferential direction, and the fan blades 5222 are driven to rotate when the hydrogen flows. In order to reduce the resistance of the flow rate fan 522 during rotation, a bearing 7 is arranged between the fan shaft 5221 and the extension rod 5212 in the embodiment of the application, so that the rotation process of the flow rate fan 522 is more smooth, and the possibility of jamming of the flow rate fan 522 after long time use, so as to damage the detection accuracy, is reduced.

[0072] With reference to Figure 6 The transmission assembly 6 comprises a pair of end plates 61 sleeved on the extension rod 5212, and the pair of end plates 61 are respectively arranged at two ends of the fan shaft 5221, and the position of the fan shaft 5221 in the axial direction is limited.

[0073] The end plate 61 is integrally formed with a limiting ring 62 on the surface facing the fan shaft 5221, the limiting ring 62 is arranged along the circumferential edge of the end plate 61, a mounting space 8 is formed between the limiting ring 62, the end plate 61 and the end surface of the fan shaft 5221, and a plurality of ball bearings 63 are rotatably mounted in the mounting space 8, the side wall of the ball bearing 63 abuts against the end surface of the fan shaft 5221, so that a gap is left between the limiting ring 62 and the end surface of the fan shaft 5221, so as to facilitate the rotation of the fan shaft 5221.

[0074] The implementation principle of the hydrogenation machine hydrogenation flow regulation detection device in the embodiment of the application is as follows: during the hydrogenation process of the hydrogenation machine, the hydrogen flow impacts on the windward ball 33, the windward ball 33 moves towards the backflow direction under the impact force, and the connecting piece 31 is fixed on the inner wall of the detection pipeline 1, so that the windward ball 33 moves under the force and drives the connecting piece 31 to bend, so that the strain gauge 32 is bent to measure the wind pressure at the current position.

[0075] During the measurement, since the windward ball 33 adopts a spherical structure, the area of the windward surface will not change no matter how the windward ball 33 deflects and moves under the impact of the hydrogen flow. In addition, the hydrogen flow is not prone to backflow, which effectively improves the accuracy of the flow regulation detection device.

[0076] The above are preferred embodiments of the application, which do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application shall be covered within the protection scope of the application.

Claims

1. A hydrogenation machine hydrogenation flow adjustment detection device for flow detection of a hydrogenation machine, characterized in that: The application relates to a hydrogen detection device for hydrogen filling machines, which comprises a detection pipeline (1) connected to the gas outlet of the hydrogen filling machine, wherein a detection assembly (3) is arranged in the detection pipeline (1), the detection assembly (3) comprises a plurality of connecting pieces (31) fixed to the inner wall of the detection pipeline (1), and the connecting pieces (31) are uniformly distributed along the circumference of the detection pipeline (1). Strain gauges (32) are arranged on the connecting pieces (31), and wind balls (33) are arranged on the ends of the connecting pieces (31) away from the inner wall of the detection pipeline (1). An adjusting valve (2) is arranged between the detection pipeline (1) and the hydrogen filling machine, the adjusting valve (2) is signal-connected with the strain gauges (32), and hydrogen in the detection pipeline (1) flows from the end close to the adjusting valve (2) to the end away from the adjusting valve (2). The wind balls (33) are connected with the connecting pieces (31) through connecting assemblies (4), the connecting assemblies (4) comprise connecting rods (41) fixed to the ends of the connecting pieces (31) away from the inner wall of the detection pipeline (1), the ends of the connecting rods (41) away from the connecting pieces (31) are inserted into the wind balls (33) along the radial direction of the wind balls (33), and the connecting rods (41) are fixed with the wind balls (33). The surfaces of the wind balls (33) are provided with a plurality of grooves (331). A verification mechanism (5) is arranged in the detection pipeline (1), the verification mechanism (5) is arranged on the side of the detection assembly (3) away from the adjusting valve (2), the verification mechanism (5) comprises a middle verification assembly (51) and a terminal verification assembly (52), and the middle verification assembly (51) and the terminal verification assembly (52) are arranged in sequence along the flow direction of hydrogen.

2. The hydrogenation flow regulating and detecting device of claim 1, wherein: The middle verification assembly (51) comprises a fixed ring (511) fixed to the inner wall of the detection pipeline (1), a plurality of embedded holes (5111) are arranged on the fixed ring (511) in sequence along the circumference of the fixed ring (511). A heat-sensitive head (512) is embedded in the embedded hole (5111), the heat-sensitive head (512) has a cavity (5121) in the inside, an electric heating wire (513) is arranged in the cavity (5121), a heat-sensitive sensor (514) for detecting the temperature of the electric heating wire (513) is arranged on the fixed ring (511), and the heat-sensitive sensor (514) is connected with the electric heating wire (513).

3. The hydrogen refueling dispenser flow regulation and detection apparatus of claim 2, wherein: A plurality of flow grooves (5112) are arranged on the fixed ring (511) in sequence, and the flow grooves (5112) are distributed at intervals.

4. The hydrogen refueling dispenser flow regulation and detection apparatus of claim 1, wherein: The terminal verification assembly (52) comprises a supporting frame (521), the supporting frame (521) is fixed to the inner wall of the detection pipeline (1), a flow speed fan (522) and a rotating speed sensor (523) are arranged on the supporting frame (521), and the rotating speed sensor (523) is used for measuring the rotating speed of the flow speed fan (522).

5. The hydrogen refueling dispenser flow regulation and detection apparatus of claim 4, wherein: The support frame (521) comprises a support rod (5211) arranged along the radial direction of the section of the detection pipeline (1) and fixed on the inner wall of the detection pipeline (1), and an extension rod (5212) is arranged on the surface of the support rod (5211) facing the detection assembly (3), the extension rod (5212) is located at the central position of the support rod (5211) and is arranged perpendicularly to the support rod (5211), and the flow rate fan (522) is installed on the extension rod (5212) through a transmission assembly (6).

6. The hydrogen refueling dispenser flow regulation and detection apparatus of claim 5, wherein: The flow rate fan (522) comprises a fan shaft (5221), a bearing (7) is sleeved on the extension rod (5212), and the fan shaft (5221) is sleeved on the bearing (7), and a plurality of fan blades (5222) are uniformly distributed in the circumferential direction of the fan shaft (5221); The transmission assembly (6) comprises a pair of end plates (61), and the pair of end plates (61) are sleeved on the extension rod (5212), one of the end plates (61) is located on the side of the fan shaft (5221) facing the detection assembly (3), the other end plate (61) is located on the side of the fan shaft (5221) away from the detection assembly (3), a limiting ring (62) is arranged on the surface of the end plate (61) close to the fan shaft (5221) and in the circumferal direction, a gap is left between the limiting ring (62) and the end surface of the fan shaft (5221), the limiting ring (62), the end plate (61) and the end surface of the fan shaft (5221) form an installation space (8), a plurality of rolling balls (63) are arranged in the installation space (8), and the side wall of the rolling ball (63) abuts against the end surface of the fan shaft (5221).

7. The hydrogen refueling dispenser flow regulation and detection apparatus of claim 1, wherein: The connecting sheet (31), the connecting rod (41) and the strain sheet (32) are all coated with rubber sleeves (9).

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