CN110686938A - A kind of hydrogen oil sampling device and sampling method - Google Patents

Abstract

The invention discloses a hydrogen oil sampling device, comprising a filter head, a steel ball, a spring, a sampling pipe, a valve, an air suction port, a suction ball, a waste liquid pipe, a three-way valve and a dust cover, and discloses a use The method of sampling hydrogen oil in this device uses the suction ball to form a negative pressure in the whole system. The hydrogen oil will enter through the sampling pipe, push the steel ball to compress the spring, and the hydrogen oil will continue to move forward. The whole system is cleaned first, and then the sampling operation is carried out. When sampling, it not only avoids the oil in the pipeline from entering the oil storage tank, effectively preventing the contamination of the body oil, but also uses the suction ball to form a negative pressure pumping oil, which is safer and simpler than the traditional oil pump or other methods. The device for sampling can ensure representative sampling, no cross-contamination, and has the characteristics of simple operation, accurate and efficient sampling.

Description

A kind of hydrogen oil sampling device and sampling method

technical field

The invention belongs to the field of experimental devices, in particular to a hydrogen oil sampling device and a sampling method.

Background technique

Hydrogen energy is considered to be one of the most promising energy sources in the future due to its abundant resources, high calorific value, and no pollution. Hydrogen not only has high heat release efficiency, but also produces only water as waste, which will not cause environmental pollution. clean fuel". Hydrogen oil hydrogen storage technology is to achieve hydrogenation and dehydrogenation by the reversible reaction of some olefins, alkynes or aromatic hydrocarbons and other hydrogen storage agents and hydrogen. The characteristics of long-distance transportation and the use of existing gasoline pipelines are widely used. However, due to the fact that hydrogen oil is a mixture, the current hydrogen oil storage often appears to be layered after being placed for a period of time. In order to investigate the storage of hydrogen oil , the quality of hydrogen storage during transportation and use, it is often necessary to sample and test to check whether the indicators of hydrogen oil are normal. During the sampling process, if foreign impurities enter the sampling bottle or the sampling is unrepresentative, cross-contamination will cause some errors, and even make the measurement data unavailable in severe cases. In order to avoid such a situation, an efficient, accurate, simple and representative sampling device and its use method are urgently needed.

SUMMARY OF THE INVENTION

The purpose of the present invention is to invent a kind of experimental equipment with simple operation, representative sampling, accurate and efficient sampling, and propose a hydrogen oil sampling device and sampling method.

The present invention adopts following technical scheme:

The key of a hydrogen oil sampling device is that it includes a sampling tube, the sampling tube extends in an arch shape, a filter head is connected to the inlet of the sampling tube, and an anti-suckback component is arranged in the sampling tube near the filter head, so The middle part of the sampling pipe is connected with a negative pressure suction component, and the outlet is connected with a dust cover. The effect of this solution is: the filter head can filter the hydrogen oil to be tested and prevent large particles from entering the sampling system; the negative pressure suction component can use the negative pressure to suck the hydrogen oil to be tested into the sampling pipe for sampling operation; the anti-sucking component component can Avoid the hydrogen oil entering the sampling tube from being sucked into the hydrogen oil to be tested, and avoid cross-contamination; the dust cover can effectively prevent the external dust from contaminating the hydrogen oil sampled.

As a preferred solution, the anti-suckback component includes a steel ball and a spring, both of which are arranged inside the sampling tube, the filter head is in the shape of a funnel, and the top of the filter head is provided with a restrictor port , the steel ball is located at the connection between the filter head and the sampling pipe, the steel ball blocks the restrictor, the spring is located above the steel ball, and the upper end of the spring abuts against the sampling pipe wall, the lower end abuts on the steel ball. The effect of this scheme is: the steel ball blocks the outlet of the filter head, which can prevent the residual hydrogen oil in the sampling tube from flowing back into the hydrogen oil system to be tested, and effectively avoid cross-contamination; the spring can prevent the steel ball from flowing with the hydrogen oil to the underpressure state. The rear end of the sampling tube loses its function of blocking the outlet of the filter head.

As a preferred solution, the negative pressure suction assembly includes a suction pipe and a suction ball, the inlet of the suction pipe is connected to the middle of the sampling pipe, the suction pipe is provided with a valve, and the outlet of the suction pipe is communicated with the outside world , the suction ball is adapted to the outlet of the suction pipe. The effect of this scheme is: through the cooperation of the suction ball and the valve, a negative pressure is formed inside the sampling tube, and the hydrogen oil to be tested is sucked into the sampling tube.

As a preferred solution, the sampling pipe is also connected with a waste liquid pipe, the waste liquid pipe is located between the air suction pipe and the dust cover, and the sampling pipe and the waste liquid pipe are controlled by a three-way valve. The effect of this scheme is that the three-way valve and the sampling tube cooperate to clean the inside of the sampling tube before the formal sampling, so as to prevent cross-infection from affecting the test results, and effectively ensure the representativeness and certainty of sampling.

A sampling method for the above-mentioned hydrogen oil sampling device, comprising the following steps:

The key is to include the following steps:

s1. Cleaning the pipeline: put the filter head into the hydrogen oil to be tested, then close the three-way valve, then open the suction port valve, and use the suction ball to extract the air in the sampling pipe, so that the inside of the sampling pipe is in a negative pressure state. The hydrogen oil will enter the filter head and push the steel ball to compress the spring, so that the hydrogen oil to be tested enters the top of the sampling pipe, then close the valve of the suction port, and finally rotate the three-way valve to the waste liquid pipe, so that the hydrogen oil to be tested flows out from the waste liquid pipe. , to achieve the purpose of cleaning the pipeline.

s2. Sampling: place the sampling bottle at the outlet of the sampling tube, cover it with a dust cover, then close the three-way valve, open the suction port valve again, and use the suction ball to extract the air in the sampling tube, so that the inside of the sampling tube is negative. After the hydrogen oil to be tested enters the top of the sampling pipe, the air outlet is closed, and finally the three-way valve is rotated to the outlet of the sampling pipe, and the hydrogen oil to be tested enters the sampling bottle under negative pressure conditions.

The effect of this scheme is: the hydrogen oil to be tested is sucked into the sampling tube for sampling operation through negative pressure, the steel ball and the spring cooperate to prevent the residual hydrogen oil in the sampling tube from flowing back into the hydrogen oil system to prevent cross-contamination, and the operation of cleaning first and then sampling The representativeness and accuracy of sampling can be guaranteed.

Beneficial effect: A hydrogen oil sampling device and sampling method of this scheme rely on the suction ball to form a negative pressure in the whole system, the hydrogen oil will enter through the sampling pipe, push the steel ball to compress the spring, the hydrogen oil will continue to move forward, and the first Rinse the entire system before entering the vial. When sampling, it not only avoids the oil in the pipeline from entering the oil storage tank, effectively preventing the contamination of the body oil, but also uses the suction ball to form a negative pressure pumping oil, which is safer and simpler than the traditional oil pump or other methods. The device for sampling can ensure the representative sampling, no cross-contamination, and has the characteristics of simple operation, accurate sampling and high efficiency. .

Description of drawings

Fig. 1 is the structural representation of the hydrogen oil sampling device of the present invention;

FIG. 2 is a schematic diagram of the assembly relationship between the steel ball 2 and the spring 3 .

Detailed ways

Below in conjunction with accompanying drawing, the present invention is described in further detail:

Example:

As shown in FIG. 1, a hydrogen oil sampling device includes a sampling tube 4, the sampling tube 4 extends in an arched shape, the inlet of the sampling tube 4 is connected with a filter head 1, and the sampling tube 4 is provided with an anti-suckback near the filter head 1 A negative pressure suction assembly is connected to the middle of the sampling pipe 4, and a dust cover 10 is connected to the outlet.

In specific implementation, the above-mentioned anti-suckback component includes a steel ball 2 and a spring 3. Both the steel ball 2 and the spring 3 are arranged inside the sampling tube 4. The filter head 1 is in the shape of a funnel, and the top of the filter head 1 is provided with a flow restrictor. The ball 2 is located at the connection between the filter head 1 and the sampling tube 4, the steel ball 2 blocks the flow restrictor, the spring 3 is located above the steel ball 2, the upper end of the spring 3 is against the wall of the sampling tube 4, and the lower end is against the steel ball 2. .

The above-mentioned negative pressure suction assembly includes a suction pipe 6 and a suction ball 7, the inlet of the suction pipe 6 is connected with the middle part of the sampling pipe 4, a valve 5 is provided on the suction pipe 6, the outlet of the suction pipe 6 is communicated with the outside world, and the suction ball 7 is connected with the outside. The outlet of the exhaust pipe 6 is suitable.

In addition, the sampling pipe 4 is also connected with a waste liquid pipe 8. The waste liquid pipe 8 is located between the suction pipe 6 and the dust cover 10. The sampling pipe 4 and the waste liquid pipe 8 are controlled by a three-way valve 9. The three-way valve 9 is mainly used for It is used to open/close the outlet of the sampling pipe and the waste liquid port 8; the dust cover 10 is mainly used to prevent the impurity particles in the air from falling into the oil sample, causing oil sample pollution. The cover 10, the waste liquid pipe 8, and the filter head 1 can all be made of transparent materials, such as polytetrafluoroethylene.

When the above-mentioned hydrogen oil sampling device performs the sampling operation, the following steps are included:

s1. Cleaning the pipeline: The specific operation is to put the filter head 1 into the hydrogen oil to be tested, then close the three-way valve 9, then open the valve 5 on the suction pipe 6, and use the suction ball 7 to extract the sampling pipe 4. The air inside makes the sampling pipe 4 in a negative pressure state, the hydrogen oil to be tested will enter the filter head 1 and push the steel ball 2 to compress the spring 3 upwards, wait for the hydrogen measuring oil to enter the horizontal section at the top of the sampling pipe 4, and then close the exhaust pipe 6, and finally rotate the three-way valve 9 to the waste liquid pipe, so that the hydrogen oil to be tested flows out from the waste liquid pipe 8 to achieve the purpose of cleaning the pipeline.

s2. Sampling: place the sampling bottle under the outlet of the sampling pipe 4 and cover it with a dust cover 10, then close the three-way valve 9, open the valve 5 on the suction pipe 6 again, and use the suction ball 7 to extract the inside of the sampling pipe 4. The air in the sampling pipe 4 is in a negative pressure state again. After the hydrogen oil to be tested enters the horizontal section at the top of the sampling pipe 4, the valve 5 is closed, and finally the three-way valve 9 is rotated to the outlet direction of the sampling pipe 4. The hydrogen oil to be tested is at Enter the sampling bottle under negative pressure to complete the sampling.

The above-mentioned hydrogen oil sampling device and its sampling method can carry out hydrogen oil sampling in a representative and non-polluting manner, and the device has a simple structure, can prevent sucking back, does not need to add other power, and can take into account the situation that hydrogen is easily explosive, and is safer, and The dust cover 10 can avoid the interference of external impurities, so that the sample is consistent with the body to the greatest extent, so the device also has a good application prospect and market environment.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those of ordinary skill in the art can make a variety of similar It is indicated that such transformations fall within the protection scope of the present invention.

Claims (5)

1. A hydrogen oil sampling device, characterized in that it comprises a sampling pipe (4), the sampling pipe (4) extends in an arched shape, the inlet of the sampling pipe (4) is connected with a filter head (1), and the sampling pipe (4) is connected with a filter head (1). (4) An anti-suckback component is provided inside near the filter head (1), a negative pressure suction component is connected to the middle of the sampling pipe (4), and a dust cover (10) is connected to the outlet. 2. A hydrogen oil sampling device according to claim 1, characterized in that: the anti-suckback component assembly comprises a steel ball (2) and a spring (3), the steel ball (2) and the spring (3) All are arranged inside the sampling tube (4), the filter head (1) is in the shape of a funnel, the top of the filter head (1) is provided with a restrictor, and the steel ball (2) is located in the filter head (1). 1) At the connection with the sampling tube (4), the steel ball (2) blocks the flow restrictor, the spring (3) is located above the steel ball (2), and the upper end of the spring (3) touches the It leans against the pipe wall of the sampling tube (4), and the lower end abuts on the steel ball (2). 3. A hydrogen oil sampling device according to claim 1 or 2, characterized in that: the negative pressure suction assembly comprises a suction pipe (6) and a suction ball (7), and the suction pipe (6) has an inlet Connected with the middle part of the sampling pipe (4), the suction pipe (6) is provided with a valve (5), the outlet of the suction pipe (6) is communicated with the outside world, and the suction ball (7) is connected to the The outlet of the suction pipe (6) is suitable. 4. A hydrogen oil sampling device according to claim 3, characterized in that: the sampling pipe (4) is also connected with a waste liquid pipe (8), and the waste liquid pipe (8) is located in the air extraction pipe ( 6) Between the dust cover (10), the sampling pipe (4) and the waste liquid pipe (8) are controlled by a three-way valve (9). 5. a sampling method utilizing a kind of hydrogen oil sampling device according to claim 1, is characterized in that, comprises the following steps: s1. Cleaning the pipeline: put the filter head into the hydrogen oil to be tested, then close the three-way valve, then open the suction port valve, and use the suction ball to extract the air in the sampling pipe, so that the inside of the sampling pipe is in a negative pressure state. The hydrogen oil will enter the filter head and push the steel ball to compress the spring, so that the hydrogen oil to be tested enters the top of the sampling pipe, then close the valve of the suction port, and finally rotate the three-way valve to the waste liquid pipe, so that the hydrogen oil to be tested flows out from the waste liquid pipe. , to achieve the purpose of cleaning the pipeline; s2. Sampling: place the sampling bottle at the outlet of the sampling tube, cover it with a dust cover, then close the three-way valve, open the suction port valve again, and use the suction ball to extract the air in the sampling tube, so that the inside of the sampling tube is negative. After the hydrogen oil to be tested enters the top of the sampling pipe, the air outlet is closed, and finally the three-way valve is rotated to the outlet of the sampling pipe, and the hydrogen oil to be tested enters the sampling bottle under negative pressure conditions.

Images