阅读说明：本技术 一种叉车燃料电池系统管路检测方法 (Pipeline detection method for forklift fuel cell system ) 是由 王文清 周庆锋 于 2021-09-14 设计创作，主要内容包括：本发明创造提供了一种叉车燃料电池系统管路检测方法,S1：通过调整减压阀分别向阳极管道、阴极管道和冷却路管道通入目标量值的惰性气体；S2：打开第二管路上的电磁阀,通过压力表和压力传感器同步确认；S3：打开加热器为惰性气体加热,通过温度传感器确认加热温度达到T；S4：通过第二管路上的流量计观察第二管路和管道待压力平衡后,关闭减压阀和电磁阀,在保压条件下静置8分钟-10分钟S5：红外热成像摄像设备采集第二管路和叉车燃料电池系统的管道的成像数据,拔掉每个第二管路与对应的燃料电池系统管道之间的快速接头完成管路泄压,结束测试。实现燃料电池系统中气路、冷却路单条或者多条管道快速准确的检测是否有泄露,泄露位置以及泄露量。(The invention provides a pipeline detection method of a forklift fuel cell system, which comprises the following steps of S1: respectively introducing inert gases with target quantity values into the anode pipeline, the cathode pipeline and the cooling pipeline by adjusting the pressure reducing valve; s2: opening an electromagnetic valve on the second pipeline, and synchronously confirming through a pressure gauge and a pressure sensor; s3: turning on a heater to heat the inert gas, and confirming that the heating temperature reaches T through a temperature sensor; s4: and (3) after the pressure balance between the second pipeline and the pipeline is observed through a flow meter on the second pipeline, closing the pressure reducing valve and the electromagnetic valve, and standing for 8-10 minutes under the pressure-keeping condition S5: the infrared thermal imaging camera equipment collects imaging data of the second pipelines and the pipelines of the forklift fuel cell system, the quick joint between each second pipeline and the corresponding pipeline of the fuel cell system is pulled out to complete pipeline pressure relief, and the test is finished. The method and the device can be used for rapidly and accurately detecting whether leakage, leakage position and leakage amount exist in a single or a plurality of pipelines of the air path and the cooling path in the fuel cell system.)

1. A forklift fuel cell system pipeline detection device is characterized by comprising: the infrared thermal imaging camera comprises a first pipeline, a second pipeline, infrared thermal imaging camera equipment and at least one gas cylinder filled with inert gas, wherein the first pipeline integrates a plurality of gas cylinders to form a gas supply source, the gas supply source is provided with a gas outlet, the gas outlet is connected with the second pipeline, the second pipeline is additionally provided with a pressure reducing valve, a pressure gauge and an electromagnetic valve, a digital display flowmeter and a heater are installed at the rear end of the electromagnetic valve along the gas flow direction, and a pressure sensor and a temperature sensor are installed at the rear end of the heater;

the second pipeline passes through quick-operation joint access fork truck fuel cell system's pipeline, infrared thermal imaging camera equipment gathers the second pipeline with the image of fork truck fuel cell system's pipeline is judged and is revealed the position.

2. The forklift fuel cell system pipeline detection device of claim 1, wherein the pipelines of the fuel cell system are divided into an anode pipeline, a cathode pipeline and a cooling pipeline, and the three second pipelines are respectively connected with the anode pipeline, the cathode pipeline and the cooling pipeline.

3. The forklift fuel cell system pipeline inspection device of claim 1, wherein the gas cylinder is a nitrogen cylinder or an ammonia cylinder.

4. The forklift fuel cell system in-line detection device of claim 1, wherein the pressure of the gas cylinder is 20 MPA.

5. The forklift fuel cell system pipeline inspection device of claim 1, wherein the quick connector is a stainless steel quick connector.

6. The forklift fuel cell system pipeline inspection device of claim 1, wherein the infrared thermal imaging camera device is a full thermal imager.

7. The forklift fuel cell system pipeline inspection device of claim 1, a main ball valve being mounted between the gas outlet and the second pipeline.

8. A forklift fuel cell system pipeline detection method is characterized by comprising the following steps:

s1: the pressure range of the gas cylinder filled with inert gas is 16-20 MPA, the pressure of the inert gas entering the second pipeline is 20MPA after the main ball valve is opened, and the inert gas with a target value is respectively introduced into the anode pipeline, the cathode pipeline and the cooling pipeline by adjusting the pressure reducing valve according to the pressure requirement of each second pipeline;

s2: opening an electromagnetic valve on the second pipeline, and synchronously confirming the air pressure value in the second pipeline and the corresponding fuel cell system pipeline through a pressure gauge and a pressure sensor;

s3: when the air pressure value in the second pipeline reaches a target value, a heater is turned on to heat the inert gas, and the heating temperature is confirmed to reach T through a temperature sensor;

s4: after the pressure balance between the second pipeline and the pipeline is observed through a flowmeter on the second pipeline, the pressure reducing valve and the electromagnetic valve are closed, the second pipeline and the pipeline are kept stand for 8 to 10 minutes under the pressure keeping condition, and the change of the flowmeter is observed so as to preliminarily judge the leakage condition;

s5: the infrared thermal imaging camera equipment acquires imaging data of the second pipeline and the pipeline of the forklift fuel cell system;

s6: the computer equipment is in communication connection with the temperature sensor and the pressure sensor on the second pipeline and collects data, the leakage position is determined through imaging data of the infrared thermal imaging camera equipment, and the leakage amount is calculated through the flowmeter;

s7: and (4) pulling out the quick joint between each second pipeline and the corresponding fuel cell system pipeline to complete pipeline pressure relief, and ending the test.

9. The forklift fuel cell system pipeline inspection method according to claim 8, wherein the infrared thermal imaging camera device employs a full thermal imager, the full thermal imager collects imaging data within 10m from the pipeline and stores the imaging data, the position of the leak is determined by a red image in the imaging, and the amount of the leak is determined by the shape of the red image.

10. The forklift fuel cell system plumbing detection method of claim 8, wherein T is 38 °.

Technical Field

The invention relates to the technical field of forklift fuel cell safety, in particular to a forklift fuel cell system pipeline detection method.

Background

Based on the regulated development of society, the demand for clean energy and renewable energy is imminent, many countries around the world propose to stop the production and use of fuel vehicles, hydrogen energy is called the ultimate energy of social development, hydrogen energy economy and hydrogen energy society are the inevitable of future development, fuel cell engine technology has been developed and researched for many years, and hydrogen energy development is in the preliminary marketization stage at present.

The development of hydrogen fuel cell engines inevitably promotes the management and application of hydrogen, because hydrogen is a dangerous gas of the class A, the safety of the hydrogen fuel cell engine system is very important, at the present stage, the hydrogen pipeline of the fuel cell engine system is also temporarily connected with each running component through a rubber pipeline, the industrial integration mode of pipeline integration components is not reached, and the tightness of the hydrogen pipeline must be improved in view of safety and efficiency.

Summary of the invention

The invention aims to provide a pipeline detection device of a forklift fuel cell system, which aims to solve the technical problems that in the prior art, the tightness of a hydrogen pipeline is not good enough, and once leakage occurs, the leakage position and the leakage amount of the hydrogen fuel cell system pipeline are difficult to detect safely and accurately. The technical effects generated by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.

In order to achieve the purpose, the invention provides the following technical scheme:

a forklift fuel cell system pipeline detection device comprises: the infrared thermal imaging camera comprises a first pipeline, a second pipeline, infrared thermal imaging camera equipment and at least one gas cylinder filled with inert gas, wherein the first pipeline integrates a plurality of gas cylinders to form a gas supply source, the gas supply source is provided with a gas outlet, the gas outlet is connected with the second pipeline, the second pipeline is additionally provided with a pressure reducing valve, a pressure gauge and an electromagnetic valve, a digital display flowmeter and a heater are installed at the rear end of the electromagnetic valve along the gas flow direction, and a pressure sensor and a temperature sensor are installed at the rear end of the heater;

the second pipeline passes through quick-operation joint access fork truck fuel cell system's pipeline, infrared thermal imaging camera equipment gathers the second pipeline with the image of fork truck fuel cell system's pipeline is judged and is revealed the position.

Preferably, the pipes of the fuel cell system are divided into an anode pipe, a cathode pipe and a cooling pipe, and the three second pipes are respectively connected with the anode pipe, the cathode pipe and the cooling pipe.

Preferably, the gas cylinder is a nitrogen gas cylinder or an ammonia gas cylinder.

Preferably, the cylinder has a pressure of 20 MPA.

Preferably, the quick connector is a stainless steel quick connector.

Preferably, the infrared thermal imaging apparatus is a full thermal imager.

Preferably, a main ball valve is installed between the gas outlet and the second pipeline.

A forklift fuel cell system pipeline detection method comprises the following steps:

s1: the pressure range of the gas cylinder filled with inert gas is 16-20 MPA, the pressure of the inert gas entering the second pipeline is 20MPA after the main ball valve is opened, and the inert gas with a target value is respectively introduced into the anode pipeline, the cathode pipeline and the cooling pipeline by adjusting the pressure reducing valve according to the pressure requirement of each second pipeline;

s2: opening an electromagnetic valve on the second pipeline, and synchronously confirming the air pressure value in the second pipeline and the corresponding fuel cell system pipeline through a pressure gauge and a pressure sensor;

s3: when the air pressure value in the second pipeline reaches a target value, a heater is turned on to heat the inert gas, and the heating temperature is confirmed to reach T through a temperature sensor;

s4: after the pressure balance between the second pipeline and the pipeline is observed through a flowmeter on the second pipeline, the pressure reducing valve and the electromagnetic valve are closed, the second pipeline and the pipeline are kept stand for 8 to 10 minutes under the pressure keeping condition, and the change of the flowmeter is observed so as to preliminarily judge the leakage condition;

s5: the infrared thermal imaging camera equipment acquires imaging data of the second pipeline and the pipeline of the forklift fuel cell system;

s6: the computer equipment is in communication connection with the temperature sensor and the pressure sensor on the second pipeline and collects data, the leakage position is determined through imaging data of the infrared thermal imaging camera equipment, and the leakage amount is calculated through the flowmeter;

s7: and (4) pulling out the quick joint between each second pipeline and the corresponding fuel cell system pipeline to complete pipeline pressure relief, and ending the test.

Preferably, the infrared thermal imaging camera device adopts a FULK thermal imager, the FULK thermal imager collects imaging data within 10m from the pipeline and stores the imaging data, the leakage position is judged through a red image in imaging, and the leakage amount is judged through the shape of the red image.

Preferably, T is 38 °.

The invention provides a forklift fuel cell system pipeline detection method, which integrates a first pipeline and a plurality of inert gas cylinders into a gas supply source, the gas supply source is respectively connected with an anode, a cathode and a cooling circuit interface of a fuel cell system through three second pipelines, a pressure reducing valve, a pressure gauge, an electromagnetic valve, a digital display flow meter, a heater and a temperature and pressure sensor are additionally arranged on the second pipelines, and a FULK thermal imager is combined to utilize thermal imaging, so that whether leakage exists in a gas path and a cooling circuit or a plurality of pipelines in the fuel cell system or not, the leakage position and the leakage amount are quickly and accurately detected, the pipelines are conveniently and quickly and efficiently repaired, and the safety of the fuel cell system pipelines and the working efficiency of the forklift fuel cell system are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a pipeline detection device of a fuel cell system of a forklift truck according to the invention;

fig. 2 is a diagram showing the effect of detecting the position of a fuel cell system pipeline leak using the full thermal imager.

In the figure: 1. a gas cylinder; 2. a first pipeline; 3. a main ball valve; 4. a second pipeline; 5. a pressure reducing valve; 6. an electromagnetic valve; 7. a digital display flowmeter; 8. a heater; 9. temperature and pressure sensors; 10. a fuel cell system.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is obvious that the described embodiments are only a few embodiments of the invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive work based on the examples of the present invention are within the scope of the present invention.

The following detailed description of embodiments of the invention refers to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding features. The figures are only schematic and are not necessarily drawn to scale.

A forklift fuel cell system pipeline detection device, as shown in fig. 1, comprising: the infrared thermal imaging camera comprises a first pipeline 2, a second pipeline 4, infrared thermal imaging camera equipment and at least one gas cylinder 1 filled with inert gas, wherein the first pipeline 2 integrates a plurality of gas cylinders 1 to form a gas supply source, the gas supply source is provided with a gas outlet, the gas outlet is connected with the second pipeline 4, a pressure reducing valve 5, a pressure gauge and an electromagnetic valve 6 are additionally arranged on the second pipeline 4, a digital display flowmeter 7 and a heater 8 are arranged at the rear end of the electromagnetic valve 6 along the gas flow direction, and a pressure sensor and a temperature sensor 9 are arranged at the rear end of the heater 8;

the second pipeline 4 is connected into the pipeline of the forklift fuel cell system 10 through a quick connector, as shown in fig. 2, the infrared thermal imaging camera device collects images of the second pipeline 4 and the pipeline of the forklift fuel cell system 10 to determine the leakage position.

Preferably, the pipeline of the fuel cell system is divided into an anode pipeline, a cathode pipeline and a cooling circuit pipeline, the three second pipelines are respectively connected with the anode pipeline, the cathode pipeline and the cooling circuit pipeline, the pipeline air path and the water path of the fuel cell system can be independently measured, and the three pipelines of the anode pipeline, the cathode pipeline and the cooling circuit pipeline of the fuel cell system can also be simultaneously detected according to the requirement.

Preferably, the gas cylinder is a nitrogen gas cylinder or an ammonia gas cylinder.

Preferably, the pressure of the cylinder is 20 MPA.

Preferably, quick-operation joint inserts for the stainless steel is fast convenient, and the leakproofness is good, reduces the measuring error that the volume of revealing of vent line and pipeline itself brought.

Preferably, the infrared thermal imaging apparatus is a full thermal imager, which has been internationally realized to detect a leak position at a position 7m from the pipe, and calculate a leak amount from an imaging shape.

Preferably, a main ball valve 3 is installed between the gas outlet and the second pipe.

A forklift fuel cell system pipeline detection method comprises the following steps:

s1: the pressure range of the gas cylinder filled with inert gas is 16-20 MPA, the pressure of the inert gas entering the second pipeline is 20MPA after the main ball valve is opened, and the inert gas with a target value is respectively introduced into the anode pipeline, the cathode pipeline and the cooling pipeline by adjusting the pressure reducing valve according to the pressure requirement of each second pipeline;

s2: opening an electromagnetic valve on the second pipeline, and synchronously confirming the air pressure value in the second pipeline and the corresponding fuel cell system pipeline through a pressure gauge and a pressure sensor;

s3: when the air pressure value in the second pipeline reaches a target value, a heater is turned on to heat the inert gas, and the heating temperature is confirmed to reach T through a temperature sensor;

s4: after the pressure balance between the second pipeline and the pipeline is observed through a flowmeter on the second pipeline, the pressure reducing valve and the electromagnetic valve are closed, the second pipeline and the pipeline are kept stand for 8 to 10 minutes under the pressure keeping condition, and the change of the flowmeter is observed so as to preliminarily judge the leakage condition;

s5: the infrared thermal imaging camera equipment acquires imaging data of the second pipeline and the pipeline of the forklift fuel cell system;

s6: the computer equipment is in communication connection with the temperature sensor and the pressure sensor on the second pipeline and collects data, the leakage position is determined through imaging data of the infrared thermal imaging camera equipment, and the leakage amount is calculated through the flowmeter;

s7: and (4) pulling out the quick joint between each second pipeline and the corresponding fuel cell system pipeline to complete pipeline pressure relief, and ending the test.

Preferably, the infrared thermal imaging camera device adopts a FULK thermal imager, the FULK thermal imager collects imaging data within 10m from the pipeline and stores the imaging data, the leakage position is judged through a red image in imaging, and the leakage amount is judged through the shape of the red image.

Preferably, T is 38 °.

The invention provides a forklift fuel cell system pipeline detection method, which integrates a first pipeline and a plurality of inert gas cylinders into a gas supply source, the gas supply source is respectively connected with an anode, a cathode and a cooling circuit interface of a fuel cell system through three second pipelines, a pressure reducing valve, a pressure gauge, an electromagnetic valve, a digital display flow meter, a heater and a temperature and pressure sensor are additionally arranged on the second pipelines, and a FULK thermal imager is combined to utilize thermal imaging, so that whether leakage exists in a gas path and a cooling circuit or a plurality of pipelines in the fuel cell system or not, the leakage position and the leakage amount are quickly and accurately detected, the pipelines are conveniently and quickly and efficiently repaired, and the safety of the fuel cell system pipelines and the working efficiency of the forklift fuel cell system are improved.

Example 1:

as shown in fig. 1, two nitrogen gas cylinders are integrated into a gas supply source through a first pipeline, the gas supply source is provided with a gas outlet, the gas outlet is respectively connected with three second pipelines through tee pipe fittings, each second pipeline is additionally provided with a pressure reducing valve, a pressure gauge and an electromagnetic valve, a digital display flowmeter and a heater are installed at the rear end of the electromagnetic valve along the gas flow direction, and a pressure sensor and a temperature sensor are installed at the rear end of the heater;

the three second pipelines are respectively assembled and connected with an anode pipeline, a cathode pipeline and a cooling pipeline of the forklift fuel cell system through stainless steel quick insertion, the pressure of inert gas entering the second pipelines is 20MPA after a main ball valve is opened, and 100KPA inert gas is respectively introduced into the anode pipeline, the cathode pipeline and the cooling pipeline through adjusting pressure reducing valves according to the pressure requirements of the anode pipeline, the cathode pipeline and the cooling pipeline;

opening an electromagnetic valve on the second pipeline, synchronously confirming the air pressure value in the second pipeline and the corresponding fuel cell system pipeline through a pressure gauge and a pressure sensor, and in the process, communicating and connecting the computer equipment with a temperature sensor and the pressure sensor on the second pipeline and acquiring data;

when the pressure in the pipeline of the fuel cell system reaches 100KPA, turning on a heater to heat the inert gas, and confirming that the heating temperature reaches 38 degrees through a temperature sensor;

after pressure balance between the second pipeline and the corresponding pipeline is observed through a flow meter on the second pipeline, the pressure reducing valve and the electromagnetic valve are closed so as to avoid influencing the air pressure value in the pipeline of the fuel cell system, standing is carried out for 8-10 minutes under the pressure maintaining condition, and the change of the flow meter is observed so as to preliminarily judge the leakage condition;

as shown in fig. 2, the full thermal imager collects imaging data of the second pipeline and the pipes of the forklift fuel cell system; the computer equipment is in communication connection with the temperature sensor and the pressure sensor on the second pipeline and collects data, the leakage position is determined through imaging data of the infrared thermal imaging camera equipment, and the leakage amount is calculated through the flowmeter; and (4) pulling out the quick joint between each second pipeline and the corresponding fuel cell system pipeline to complete pipeline pressure relief, and ending the test.

Example 2:

as shown in fig. 1, two nitrogen gas cylinders are integrated into a gas supply source through a first pipeline, the gas supply source is provided with a gas outlet, the gas outlet is connected with two second pipelines through a two-way pipe fitting, each second pipeline is additionally provided with a pressure reducing valve, a pressure gauge and an electromagnetic valve, a digital display flowmeter and a heater are installed at the rear end of the electromagnetic valve along the gas flow direction, and a pressure sensor and a temperature sensor are installed at the rear end of the heater;

the two second pipelines are respectively assembled and connected with an anode pipeline and a cathode pipeline of the forklift fuel cell system through stainless steel quick insertion, the pressure of inert gas entering the second pipelines is 20MPA after the main ball valve is opened, and 100KPA inert gas is respectively introduced into the anode pipeline and the cathode pipeline through adjusting pressure reducing valves according to the pressure requirements of the anode pipeline and the cathode pipeline;

opening an electromagnetic valve on the second pipeline, synchronously confirming the air pressure value in the second pipeline and the corresponding fuel cell system pipeline through a pressure gauge and a pressure sensor, and in the process, communicating and connecting the computer equipment with a temperature sensor and the pressure sensor on the second pipeline and acquiring data;

when the pressure in the pipeline of the fuel cell system reaches 100KPA, turning on a heater to heat the inert gas, and confirming that the heating temperature reaches 38 degrees through a temperature sensor;

after pressure balance between the second pipeline and the corresponding pipeline is observed through a flow meter on the second pipeline, the pressure reducing valve and the electromagnetic valve are closed so as to avoid influencing the air pressure value in the pipeline of the fuel cell system, standing is carried out for 8-10 minutes under the pressure maintaining condition, and the change of the flow meter is observed so as to preliminarily judge the leakage condition;

the FULK thermal imager acquires imaging data of a second pipeline and a pipeline of the forklift fuel cell system; the computer equipment is in communication connection with the temperature sensor and the pressure sensor on the second pipeline and collects data, the leakage position is determined through imaging data of the infrared thermal imaging camera equipment, and the leakage amount is calculated through the flowmeter; and (4) pulling out the quick joint between each second pipeline and the corresponding fuel cell system pipeline to complete pipeline pressure relief, and ending the test.

Example 3:

as shown in fig. 1, two nitrogen gas cylinders are integrated into a gas supply source through a first pipeline, the gas supply source is provided with a gas outlet, the gas outlet is connected with second pipelines, each second pipeline is additionally provided with a pressure reducing valve, a pressure gauge and an electromagnetic valve, a digital display flowmeter and a heater are installed at the rear end of the electromagnetic valve along the gas flow direction, and a pressure sensor and a temperature sensor are installed at the rear end of the heater;

the second pipeline is connected with a cooling circuit interface of a forklift fuel cell system through a stainless steel quick plug, the pressure of inert gas entering the second pipeline is 20MPA after a main ball valve is opened, and 80KPA inert gas is introduced into the cooling circuit through adjusting a pressure reducing valve according to the pressure requirements of an anode pipeline and a cathode pipeline;

opening an electromagnetic valve on the second pipeline, synchronously confirming the air pressure value in the second pipeline and the corresponding fuel cell system pipeline through a pressure gauge and a pressure sensor, and in the process, communicating and connecting the computer equipment with a temperature sensor and the pressure sensor on the second pipeline and acquiring data;

when the temperature in the pipeline of the fuel cell system reaches 80KPA, turning on a heater to heat the inert gas, and confirming that the heating temperature reaches 38 degrees through a temperature sensor;

after pressure balance between the second pipeline and the corresponding pipeline is observed through a flow meter on the second pipeline, the pressure reducing valve and the electromagnetic valve are closed so as to avoid influencing the air pressure value in the pipeline of the fuel cell system, standing is carried out for 8-10 minutes under the pressure maintaining condition, and the change of the flow meter is observed so as to preliminarily judge the leakage condition;

the FULK thermal imager acquires imaging data of a second pipeline and a pipeline of the forklift fuel cell system; the computer equipment is in communication connection with the temperature sensor and the pressure sensor on the second pipeline and collects data, the leakage position is determined through imaging data of the infrared thermal imaging camera equipment, and the leakage amount is calculated through the flowmeter; according to the latest FULK thermal imager, the model is a Fluke ii910 ultrasonic partial discharge imager, the corresponding leakage amount can be calculated through the image shape and the protocol of the Fluke ii910 ultrasonic partial discharge imager, the calculated leakage amount value is compared with the leakage amount calculated by the digital display flowmeter, and preparation work is made for directly determining the leakage position and the leakage amount by using the FULK thermal imager in a quicker and more accurate manner in the near future.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and all such changes or substitutions are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.