CN114578091B - Hydrogenation flow regulation detection device - Google Patents
Hydrogenation flow regulation detection device Download PDFInfo
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- CN114578091B CN114578091B CN202210486171.4A CN202210486171A CN114578091B CN 114578091 B CN114578091 B CN 114578091B CN 202210486171 A CN202210486171 A CN 202210486171A CN 114578091 B CN114578091 B CN 114578091B
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- flow rate
- spoiler
- detection
- way valve
- hydrogen
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- 238000001514 detection method Methods 0.000 title claims abstract description 97
- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 34
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000001257 hydrogen Substances 0.000 claims abstract description 43
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 43
- 238000013016 damping Methods 0.000 claims abstract description 11
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 13
- 230000000903 blocking effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention provides a hydrogenation flow regulation and detection device, which comprises a detection pipeline, a microprocessor, a control valve, a primary flow velocity detection component, a one-way valve and a secondary flow velocity detection component, wherein the control valve, the primary flow velocity detection component, the one-way valve and the secondary flow velocity detection component are sequentially arranged along the direction of air flow in the detection pipeline; the primary flow rate detection component comprises a fan and a rotating speed sensor; the secondary flow velocity detection component comprises a spoiler, a damping rod and a pressure sensor, wherein the spoiler is arranged opposite to the outlet end of the one-way valve so as to be impacted by the outflow air of the one-way valve; the microprocessor is used for acquiring the rotating speed of the fan to calculate a first hydrogen flow rate, acquiring the pressure borne by the spoiler to calculate a second hydrogen flow rate, and controlling the control valve to close when the second hydrogen flow rate is greater than the first hydrogen flow rate. The invention has the beneficial effects that: the detection result of the first hydrogen flow rate is verified and fed back through the second hydrogen flow rate, so that the accuracy of the detection data of the hydrogen flow rate is ensured; the detected air flow is quickly recovered to flow uniformly, and the influence of flow speed detection on the stable flow of the hydrogen is reduced.
Description
Technical Field
The invention relates to the technical field of hydrogenation equipment, in particular to a hydrogenation flow regulation and detection device.
Background
The hydrogen refueling station is an important infrastructure for industrialization and commercialization of the hydrogen fuel cell, and generally, a hydrogen refueling machine is used for refueling a hydrogen fuel cell automobile with hydrogen. In the hydrogenation process of the hydrogenation machine, a hydrogenation regulation detection device is required to be used for detecting and controlling the hydrogen flow rate output by the hydrogenation machine so as to control the hydrogenation amount. The existing hydrogenation adjusting and detecting device has the advantages that gas passes through the inside of the device when in work, the gas collides with a shielding object in the front end direction to cause gas backflow, so that the backflow gas influences the gas flowing in the forward direction to cause interference, the device detects the gas flow velocity by mistake, and the device hydrogenation machine detects the flow of the filled hydrogen by mistake.
Disclosure of Invention
In view of this, in order to solve the problem that the flow rate detection of the hydrogen filling gas by the hydrogenation machine is affected due to gas backflow when the flow rate of the hydrogen gas is detected by the conventional hydrogenation adjustment detection device, an embodiment of the present invention provides a hydrogenation flow rate adjustment detection device.
The embodiment of the invention provides a hydrogenation flow regulation and detection device, which comprises a detection pipeline, a microprocessor, a control valve, a primary flow velocity detection component, a one-way valve and a secondary flow velocity detection component, wherein the control valve, the primary flow velocity detection component, the one-way valve and the secondary flow velocity detection component are sequentially arranged along the direction of air flow in the detection pipeline;
wherein the primary flow rate detection means includes a fan and a rotational speed sensor that measures a rotational speed of the fan;
the secondary flow velocity detection component comprises a spoiler, a damping rod and a pressure sensor, the spoiler is arranged opposite to the outlet end of the one-way valve so as to be impacted by the outflow airflow of the one-way valve, and the pressure sensor is connected with the spoiler through the damping rod so as to measure the pressure applied on the spoiler;
the microprocessor is used for acquiring the fan rotating speed, calculating a first hydrogen flow rate according to the fan rotating speed, acquiring the pressure borne by the spoiler, calculating a second hydrogen flow rate according to the pressure borne by the spoiler, and controlling the control valve to be closed when the second hydrogen flow rate is greater than the first hydrogen flow rate.
Further, the distance from the spoiler to the outlet end of the one-way valve is not more than a set distance, so that the spoiler can block the outflow airflow of the one-way valve from being dispersed to the inner wall of the detection pipeline along the back of the outlet end of the one-way valve to flow.
Further, the spoiler is a circular canvas board, and the diameter of the spoiler is larger than 2 times of the diameter of the outlet end of the one-way valve and smaller than 2/3 of the diameter of the detection pipeline.
Further, the damping rod comprises a base, a guide rod and a spring, wherein one end of the guide rod is connected with the base in a sliding mode, the other end of the guide rod is connected with the spoiler, and the spring is sleeved on the guide rod.
Further, the inner wall of the detection pipeline is provided with a support rod extending axially, and the pressure sensor is installed at the end part of the support rod and connected with the base.
Further, the primary flow velocity detection component further comprises a mounting bracket, the fan is located on the axis of the detection pipeline and arranged on the mounting bracket, and the rotating speed sensor is arranged on the mounting bracket and connected with a rotating shaft of the fan.
Furthermore, the device also comprises two outer joints respectively connected with the two ends of the detection pipeline, and inner threads are arranged on the inner walls of the outer joints.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
1. according to the device for adjusting and detecting the hydrogenation flow, the primary flow velocity detection part is arranged at the upstream of the one-way valve, the first hydrogen flow velocity is detected through the rotating speed of the fan, and the phenomenon that the hydrogen detection result is interfered by backflow during hydrogen detection is avoided; and a secondary flow rate detection part is arranged at the downstream of the one-way valve, the second hydrogen flow rate is detected through air pressure, and the detection result of the first hydrogen flow rate is verified and fed back through the second hydrogen flow rate, so that the accuracy of the detection data of the hydrogen flow rates is ensured.
2. According to the device for adjusting and detecting the hydrogenation flow, the flow blocking plate of the secondary flow velocity detection part is matched with the outlet end of the one-way valve to guide the hydrogen gas flow besides detecting the hydrogen gas flow velocity, so that the hydrogen gas flow rapidly disperses to flow to the inner wall of the detection pipeline, the detected gas flow rapidly recovers to flow uniformly, the influence of flow velocity detection on the stable flow of the hydrogen gas flow is reduced, and the device is suitable for the condition that the detection pipeline of a hydrogenation machine is short in length.
Drawings
FIG. 1 is a schematic view of a hydrogenation flow regulation detection device according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a partially enlarged view at B in fig. 1.
In the figure: 1-detection pipeline, 2-external joint, 3-one-way valve, 4-control valve, 5-fan, 6-spoiler, 7-damping rod, 701-base, 702-guide rod, 703-spring, 8-mounting bracket, 9-support rod, 10-internal thread, 11-box body, 12-pressure sensor and 13-rotation speed sensor.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings. The following presents a simplified summary of the invention in order to provide a basic understanding of the invention and to provide a basic understanding of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be construed broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Referring to fig. 1, an embodiment of the present invention provides a hydrogenation flow regulation and detection device (hereinafter, referred to as the device for short) suitable for detecting and regulating a flow rate of hydrogen gas injected into a hydrogenation gun of a hydrogenation station, the device mainly includes a detection pipeline 1, two external connectors 2, a microprocessor, and a control valve 4, a primary flow rate detection component, a one-way valve 3, and a secondary flow rate detection component, which are sequentially arranged along an airflow direction inside the detection pipeline 1.
Specifically, the two outer joints 2 are respectively connected with two ends of the detection pipeline 1, and each end of the outer joint 2 is provided with an internal thread 10, and the inner thread 10 is connected to a gas transmission pipeline of the hydrogenation gun. When the hydrogenation gun hydrogenates, hydrogen flows into the detection pipeline 1 from one external joint 2 and flows out of the detection pipeline 1 from the other external joint 2. The control valve 4 is specifically an electromagnetic valve, and is arranged at the right end of the detection pipeline 1 and close to the outer joint 2 on the right side. The one-way valve 3 is arranged inside the detection pipeline 1, so that air flow flows in a one-way mode. Hydrogen gas flows from the right to the left through the detection pipe 1 as in the present embodiment.
Next, as shown in fig. 1 and 2, the primary flow rate detection means includes a fan 5, a mounting bracket 8, and a rotation speed sensor 13 that measures the rotation speed of the fan 5. The fan 5 is located on the axis of the detection pipeline 1, the mounting bracket 8 is fixedly arranged inside the detection pipeline 1, the fan 5 and the rotation speed sensor 13 are respectively arranged on the mounting bracket 8, wherein the fan 5 is located on the right side of the mounting bracket 8, the rotation speed sensor 13 is located on the left side of the mounting bracket 8, and the rotation speed sensor 13 is connected with the rotation shaft of the fan 5.
As further shown in fig. 3, the secondary flow rate detection means includes a spoiler 6, a damper lever 7, and a pressure sensor 12. The spoiler 6 is arranged opposite to the outlet end of the one-way valve 3, so that the spoiler 6 can be impacted by the outflow of the one-way valve 3. The pressure sensor 12 is connected to the spoiler 6 through the damping rod 7, and when the spoiler 6 is impacted by the airflow, the pressure sensor 12 can detect the pressure applied to the spoiler 6, that is, the airflow pressure.
Specifically, the damping rod 7 includes a base 701, a guiding rod 702 and a spring 703, wherein one end of the guiding rod 702 is slidably connected to the base 701, the other end of the guiding rod 702 is connected to the spoiler 6, and the spring 703 is sleeved on the guiding rod 702. The inner wall of the detection pipeline 1 is provided with a support rod 9 extending axially, the number of the support rods 9 is two, and each support rod 9 is perpendicularly connected with one of the two support rods 7 and two of the guide rods 702 of the two support rods 7 are simultaneously connected with the spoiler 6. The pressure sensor 12 is mounted at the end of the support rod 9 and connected to the base 701. When the spoiler 6 is impacted by the hydrogen gas flow, the spoiler retreats, and the pressure sensor 12 bears the pressure transmitted by the damping rod 7, namely the pressure of the hydrogen gas flow.
The microprocessor is a programmable logic controller and is arranged in a box body 11 on the outer wall of the detection pipeline 1, and the microprocessor is electrically connected with the rotating speed sensor 13, the pressure sensor 12 and the control valve 4. The microprocessor obtains the rotation speed of the fan 5, and the rotation speed of the fan 5 is in direct proportion to the flow rate of the hydrogen gas, so that the first hydrogen gas flow rate can be calculated according to the rotation speed of the fan 5. The microprocessor obtains the pressure applied on the flow blocking plate 6, namely the hydrogen pressure, and then the second hydrogen flow rate can be calculated according to the calculation formula of the gas pressure and flow rate.
And the detection result of the first hydrogen flow rate is verified and fed back through the second hydrogen flow rate, so that the accuracy of the detection data of the hydrogen flow rate is ensured. Theoretically, since the primary flow rate detection section is located upstream of the hydrogen gas flow and the secondary flow rate detection section is located downstream of the hydrogen gas flow, the first hydrogen gas flow rate should be measured to be slightly greater than the second hydrogen gas flow rate. If the second hydrogen flow rate is greater than the first hydrogen flow rate, a malfunction is indicated, and therefore, the microprocessor compares the first hydrogen flow rate with the second hydrogen flow rate, and controls the control valve 4 to close when the second hydrogen flow rate is greater than the first hydrogen flow rate, so that the hydrogenation gun stops hydrogenating.
In addition, the spoiler 6 is matched with the back of the outlet end of the one-way valve 3, so that the detected gas is rapidly and uniformly dispersed into the detection pipeline 1. Specifically, the distance from the spoiler 6 to the outlet end of the one-way valve 3 is not greater than a set distance, so that the spoiler 6 can block the outflow airflow of the one-way valve 3 from being dispersed to the inner wall of the detection conduit 1 along the back of the outlet end of the one-way valve 3. In this embodiment, the spoiler 6 is a circular canvas plate, the diameter of the spoiler 6 is greater than 2 times the diameter of the outlet end of the one-way valve 3 and smaller than 2/3 times the diameter of the detection conduit 1, and the distance from the spoiler 6 to the outlet end of the one-way valve 3 is approximately 2 times the diameter of the outlet end of the one-way valve 3.
As shown in fig. 1, the hydrogen gas flow flowing out from the outlet end of the one-way valve 3 collides with the spoiler 6 to scatter, then flows along the back of the outlet end of the one-way valve 3 to turn back, and flows in a manner of being attached to the inner wall of the detection pipeline 1, so that the hydrogen gas flow is guided, the hydrogen gas flow is rapidly dispersed and flows into the detection pipeline 1, the detected gas flow is rapidly restored to uniformly flow, and the influence of flow speed detection on the stable flow of the hydrogen gas flow is reduced. Meanwhile, the detected hydrogen gas flow can be rapidly recovered to stably flow, so that the length of the detection pipeline 1 can be shortened, and the detection pipeline is matched with the size of a hydrogenation machine.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that they are relative concepts that may be modified in various manners of use and placement and that the use of directional terms should not be taken to limit the scope of what is claimed.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A hydrogenation flow regulation detection device is characterized in that: the device comprises a detection pipeline, a microprocessor, a control valve, a primary flow velocity detection component, a one-way valve and a secondary flow velocity detection component, wherein the control valve, the primary flow velocity detection component, the one-way valve and the secondary flow velocity detection component are sequentially arranged along the direction of air flow in the detection pipeline;
wherein the primary flow rate detection means includes a fan and a rotational speed sensor that measures a rotational speed of the fan;
the secondary flow velocity detection component comprises a spoiler, a damping rod and a pressure sensor, the spoiler is arranged opposite to the outlet end of the one-way valve so as to be impacted by the outflow airflow of the one-way valve, and the pressure sensor is connected with the spoiler through the damping rod so as to measure the pressure applied on the spoiler;
the microprocessor is used for acquiring the fan rotating speed, calculating a first hydrogen flow rate according to the fan rotating speed, acquiring the pressure borne by the spoiler, calculating a second hydrogen flow rate according to the pressure borne by the spoiler, and controlling the control valve to be closed when the second hydrogen flow rate is greater than the first hydrogen flow rate.
2. The hydrogenation flow rate regulation and detection device according to claim 1, wherein: the distance from the spoiler to the outlet end of the one-way valve is not more than a set distance, so that the spoiler can block the outflow airflow of the one-way valve to be dispersed to the inner wall of the detection pipeline to flow along the back of the outlet end of the one-way valve.
3. The hydrogenation flow rate regulation detection device according to claim 2, wherein: the spoiler is a circular canvas board, and the diameter of the spoiler is 2 times larger than that of the outlet end of the one-way valve and smaller than 2/3 of the diameter of the detection pipeline.
4. The hydrogenation flow rate regulation and detection device according to claim 1, wherein: the damping rod comprises a base, a guide rod and a spring, wherein one end of the guide rod is connected with the base in a sliding mode, the other end of the guide rod is connected with the spoiler, and the spring is sleeved on the guide rod.
5. The hydrogenation flow rate regulation detection device according to claim 4, wherein: the inner wall of the detection pipeline is provided with a support rod extending axially, and the pressure sensor is installed at the end part of the support rod and connected with the base.
6. The hydrogenation flow rate regulation and detection device according to claim 1, wherein: the primary flow velocity detection component further comprises a mounting support, the fan is located on the axis of the detection pipeline and arranged on the mounting support, and the rotating speed sensor is arranged on the mounting support and connected with a rotating shaft of the fan.
7. The hydrogenation flow rate regulation and detection device according to claim 1, wherein: the detection pipeline is characterized by further comprising two outer joints respectively connected with the two ends of the detection pipeline, and inner threads are arranged on the inner walls of the outer joints.
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| CN115523971B (en) * | 2022-11-04 | 2023-02-28 | 四川瑞吉绿能科技有限公司 | Pivot device for measuring flow of carbon-containing gas and flow measuring device |
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| CN114578091A (en) | 2022-06-03 |
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