CN218917320U - Waterproof frock of sensor - Google Patents

Abstract

The utility model relates to the field of fuel cells, and particularly discloses a waterproof tool for a sensor, which comprises the following components: the device comprises an air inlet pipe, a pipe cavity, an air outlet pipe, a drain pipe and a sensor; the air inlet pipe, the pipe cavity and the air outlet pipe are sequentially connected, a drain pipe is connected below the pipe cavity, the sensor is arranged at the rear end of the air outlet pipe pipeline, and a sieve plate is arranged at the front end of the air outlet pipe pipeline. According to the waterproof tool, the steam-water mixture is separated through the drain pipe and the screen plate, liquid water is discharged through the drain pipe, inaccuracy in measured data and damage to the sensor caused by water encountered by the sensor are effectively avoided, the waterproof tool can be matched with sensors of different types, the manufacturing cost is low, and the waterproof tool can be widely used.

Description

Waterproof frock of sensor

Technical Field

The utility model relates to the field of fuel cells, in particular to a waterproof tool for a sensor.

Background

The hydrogen fuel cell is a power generation device using hydrogen as fuel, and is divided into a graphite plate pile and a metal plate pile according to bipolar plate materials. Fuel cells can be used for both power and backup power. In the development of fuel cell testing, a large number of sensors are required to be installed to accurately measure the performance of a hydrogen fuel cell system, and a large amount of water is generated in an air/hydrogen path in the fuel cell system, but the current sensors are short-circuited when encountering water, so that the sensors are damaged when the current sensors are continuously used, and the testing cost is increased. In addition, the drainage pipeline of the fuel cell test workshop is directly communicated with the sewer, so that the concentration of hydrogen in the sewer is high, and a certain potential safety hazard exists.

In the scheme of the prior art, the method mainly comprises three steps: 1. a sensor intermittent acquisition method, such as patent CN215005200U, adopts a mode of stage gas acquisition to detect the hydrogen concentration; 2. after separation by using a steam-water separator, measuring by using a sensor; 3. and a waterproof shell is additionally arranged on each sensor.

The prior art solutions have the following drawbacks:

1. most of the sensors only aim at optimizing the tail exhaust steam-water separation in terms of system and structure, the application range is narrow, and the structure is complex and cannot meet the application of other sensors;

2. the prior art does not meet the protection of a sensor during low-temperature test of a fuel cell system;

3. the prior art can not simultaneously solve the problem that the hydrogen concentration is larger because the hydrogen enters a sewer due to the too high hydrogen concentration in a drainage system of a test workshop.

Therefore, a tooling is urgently needed, the problems of water resistance of the sensor and larger concentration of hydrogen in a sewer are solved, and the tooling can adapt to different gas paths and different types of engines and can perform low-temperature protection.

Disclosure of Invention

In order to overcome the defects in the prior art, the technical problem to be solved by the utility model is to provide a special sensor waterproof tool for a fuel cell system, which can be applied to various sensors and effectively avoid the influence of liquid water on the sensors.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a waterproof frock of sensor for be connected with fuel cell engine, include: the device comprises an air inlet pipe, a pipe cavity, an air outlet pipe, a drain pipe and a sensor;

the air inlet pipe, the pipe cavity and the air outlet pipe are sequentially connected, a drain pipe is connected below the pipe cavity, and the sensor is arranged at the rear end of the air outlet pipe pipeline.

Preferably, the drain pipe is arranged as a trap;

preferably, the drain pipe is a U-shaped pipe;

the design of the bent drain pipe pipeline ensures that water forms a liquid seal and prevents gas from flowing out.

Furthermore, the front end of the air outlet pipe pipeline is also provided with a sieve plate, and water vapor can be condensed into liquid water through the sieve plate.

Further, the air inlet pipe is provided with a first spring plug piece, and the air outlet pipe is provided with a second spring plug piece, so that the pipeline interface can achieve the effects of convenience in plug and good sealing performance by using the springs.

Further, the drain pipe is provided with the anti-freezing sleeve outside, anti-freezing sleeve's hot water inlet sets up in the downside, anti-freezing sleeve's hot water outlet sets up the upside, and hot water heats the drain pipe through the direction of going into from top down.

Further, the air outlet pipe is arranged in an upward inclined mode.

The utility model has at least the following beneficial effects:

1. according to the waterproof tool for the sensor, provided by the utility model, the liquid water is discharged through the drain pipe and the sieve plate which are designed in a bending way, so that the sensor can be prevented from being contacted with the liquid water, and gas can be prevented from entering a sewer by utilizing the water seal of the drain pipe;

2. the waterproof tool for the sensor provided by the utility model has the advantages of flexible structure, simple and convenient manufacturing process, and can be applicable to different sensors and applied to high and cold environments;

3. according to the waterproof tool for the sensor, provided by the utility model, the simple and effective sealing of the pipeline is realized by using the spring plug-in component.

Drawings

Fig. 1 is a schematic structural diagram of a waterproof tool for a sensor.

Description of the reference numerals: 1. an air inlet pipe; 2. a lumen; 3. a sieve plate; 4. a sensor; 5. an air outlet pipe; 6. a first spring plug; 7. a second spring plug; 8. a drain pipe; 9. an antifreezing sleeve.

Detailed Description

In order to make the objects, technical solutions and advantageous effects of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model and the accompanying drawings, and it is obvious that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner" and "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model, unless otherwise indicated, in the description of the present utility model, "a plurality" means two or more.

As shown in fig. 1, the waterproof tooling for the sensor provided by the utility model is used for being connected with a fuel cell engine and additionally arranged on an air outlet side or an outlet side of a tail exhaust pipeline, and comprises the following components: the air inlet pipe 1, the pipe cavity 2, the sieve plate 3, the sensor 4 and the air outlet pipe 6 are sequentially connected;

wherein the air inlet pipe 1 is provided with a first spring plug-in component 6, and the air outlet pipe 5 is provided with a second spring plug-in component 7;

wherein, the pipe chamber 2 below is provided with drain pipe 8, and outlet duct 5 pipeline upward slope sets up, is convenient for flow of liquid water that forms through the condensation of sieve 3 to drain pipe 8.

Example 1

A waterproof frock of sensor is used for hydrogen concentration sensor's waterproof, and wherein the sensor sets up to hydrogen concentration sensor, and the drain pipe sets up to the trap.

When the device is specifically used, the water inlet pipe is connected with the tail outlet pipe through the spring plug-in component, the tail outlet product steam-water mixture enters the pipe cavity through the air inlet pipe, most liquid water can enter the water storage bay below the pipe cavity due to the action of gravity, and the small part of water vapor enters the air outlet pipe on the inclined upper side, so that the water vapor can be further condensed into liquid water when passing through the sieve plate, and flows back into the water storage trap. The hydrogen concentration of the gas passing through the sieve plate is measured by the installed hydrogen concentration sensor, so that the hydrogen concentration of the gas is measured by the hydrogen sensor without being influenced by liquid water;

meanwhile, as the water in the trap can form a liquid seal to prevent gas from flowing out, the hydrogen can be prevented from entering a sewer to cause the hydrogen concentration to be too high, and in addition, the redundant water can be discharged out of the trap along with the increase of the water quantity in the trap and the change of the pressure of the pipe cavity.

Example two

The same parts as those of the first embodiment of the waterproof tool for the sensor are not described here, and the difference is that:

an antifreezing sleeve 9 is arranged outside the drain pipe 8, a hot water inlet of the antifreezing sleeve 9 is arranged below, a hot water outlet is arranged above, and hot water penetrates through the antifreezing sleeve 9 in a mode of entering from bottom to top.

The waterproof tool with the anti-freezing sleeve can be used in a high-cold environment, and the specific using method is as follows:

when ambient temperature is lower, in order to prevent that the drain pipe from blocking the drain pipe pipeline because of inside ponding freezes, liquid water can't discharge and lead to waterproof frock to be unable to use, designs an antifreezing sleeve pipe in the drain pipe outside, and antifreezing sheathed tube hot water import sets up in the below, and hot water export sets up the top, and when the temperature was too low, from hot water import department lets in hot water, carries out heating treatment to the drain pipe for liquid water smoothly circulates.

Example III

The same parts as those of the first and second embodiments are not described here, and the difference is that:

the drain pipe is a U-shaped pipe, and the specific use method is the same as that of the embodiment.

Through the description of embodiment one, two, three, whole waterproof frock separates through trap and sieve effectively with the vapour-water mixture of mixing, avoids the sensor to cause the inaccurate even problem of damage of measurement because of the influence of water, and this waterproof frock suitability is strong, can match with different sensors, connects in different pipelines.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims (4)

1. A waterproof frock of sensor for be connected with fuel cell engine, its characterized in that includes: the device comprises an air inlet pipe, a pipe cavity, an air outlet pipe, a drain pipe and a sensor;

the air inlet pipe, the pipe cavity and the air outlet pipe are sequentially connected, a drain pipe is connected below the pipe cavity, and the sensor is arranged at the rear end of the air outlet pipe pipeline;

the drain pipe is arranged as a trap or a U-shaped pipe;

the front end of the pipeline of the air outlet pipe is also provided with a sieve plate.

2. The waterproof tool of the sensor according to claim 1, wherein the air inlet pipe is provided with a first spring plug, and the air outlet pipe is provided with a second spring plug.

3. The waterproof tool of the sensor according to claim 2, wherein an antifreezing sleeve is arranged outside the drain pipe, a hot water inlet of the antifreezing sleeve is arranged on the lower side, and a hot water outlet of the antifreezing sleeve is arranged on the upper side.

4. A waterproof sensor tool according to claim 3, wherein the outlet pipe is inclined upward.

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