CN105973784A - Solid particle protective clothing detection experiment chamber - Google Patents

Abstract

The invention relates to an experimental cabin for solid particle protective clothing detection, which includes a testing cabin, a purge cabin, an exhaust pipe and an exhaust device. The purge cabin is arranged on one side bulkhead of the testing cabin, and the side cabin of the testing cabin The wall is provided with a first hatch connected to the purge cabin, and the bulkhead of the purge cabin is provided with a second hatch connected to the outside world. The exhaust device communicates with the side of the test cabin away from the purge cabin. The test cabin The bulkhead of the tank is provided with the connection port of the aerosol generation channel, the connection port of the air supply pipe, the connection port of the sampling pipe, the connection port of the test pipe, the pressure transmitter and the pressure gauge, and the exhaust pipe is arranged along the circumference of the bottom wall of the test cabin. The side of the pipe close to the exhaust device communicates with the exhaust device through a connecting pipe. The technical scheme of the invention provides a convenient and effective experimental cabin for the detection test of the inward leakage rate of the chemical protective clothing for solid particles, and is beneficial for testing whether the chemical protective clothing for solid particles meets the national technical standards.

Description

An experimental cabin for solid particle protective clothing testing

technical field

The invention relates to the field of detection of inward leakage rate of solid particle chemical protective clothing, in particular to an experimental chamber for detecting solid particle protective clothing.

Background technique

In an environment with particulate chemical pollution, workers must wear protective clothing that protects the human body.

According to GB/T 29511-2013 "Protective Clothing Solid Particulate Chemical Protective Clothing", it is required to test the inward leakage rate of protective clothing to judge whether the protective clothing meets the technical requirements for use.

At present, there are no finalized products for testing the inward leakage rate of solid particle chemical protective clothing at home and abroad, and many difficulties will be encountered when testing the inward leakage rate of protective clothing.

The definition of the inward leakage rate of protective clothing: the ratio of the concentration of pollutants leaking into the clothing from various parts of the protective clothing, including fabrics and connections, to the concentration of pollutants in the environment.

Contents of the invention

The technical problem to be solved by the present invention is to provide a convenient and effective experimental cabin for measuring the inward leakage rate of solid particle chemical protective clothing.

The technical scheme that the present invention solves the problems of the technologies described above is as follows:

A solid particle protective clothing detection experiment cabin, which includes a test cabin, a purge cabin, an exhaust pipe and an exhaust device, the purge cabin is arranged on a side bulkhead of the test cabin, and the test cabin The side bulkhead is provided with a first hatch communicated with the purge cabin, the bulkhead of the purge cabin is provided with a second hatch communicated with the outside world, the exhaust device is connected with the test cabin The side away from the purging cabin is connected, and the bulkhead of the test cabin is provided with an aerosol generation channel connection port, an air supply pipe connection port, a sampling pipe connection port, a test pipe connection port, a pressure transmitter and a pressure gauge , the exhaust pipe is arranged circumferentially along the bottom wall of the test chamber, and the side of the exhaust pipe close to the exhaust device communicates with the exhaust device through a connecting pipe.

Compared with prior art, the beneficial effect of the present invention is:

The product of the present invention provides a convenient and effective experimental cabin for the inward leakage rate experiment of solid particle chemical protective clothing, which meets the detection requirements of article 3.2 inward leakage rate of GB/T 29511-2013 "Protective clothing solid particle chemical protective clothing" , can test whether the solid particle chemical protective clothing meets the national technical standards.

On the basis of above-mentioned technical scheme, the present invention can also be improved as follows:

As a preferred embodiment of the present invention, one side of the first cabin door is hinged to the bulkhead of the testing cabin, and the other side is magnetically connected to the bulkhead of the testing cabin.

The beneficial effect of adopting the above further solution is: the first cabin door is magnetically connected to the side wall of the test cabin, the structural connection is simple, and it is convenient for the measured object to open or close the first cabin door to enter and exit the test cabin from the purging cabin.

As a preferred embodiment of the present invention, the shape of the first cabin door is a rectangular plate, one side of which is hinged to the bulkhead of the test cabin, and the upper and lower corners of the other side are respectively provided with magnets, The bulkhead of the test cabin is provided with an absorbing piece that is mutually attracted to the magnet at the position where the magnet is located relative to the first cabin door.

The beneficial effect of adopting the above further scheme is that the magnet on the first cabin door and the adsorption piece on the bulkhead of the test cabin can generate mutual attraction, thereby opening or closing the first cabin door, and the operation is simple and convenient.

As a preferred embodiment of the present invention, one side of the second hatch is hinged to the bulkhead of the purge chamber, and the other side is magnetically connected to the bulkhead of the purge chamber.

The beneficial effect of adopting the above further solution is: the second cabin door is magnetically connected to the side wall of the purge cabin, the structural connection is simple, and it is convenient for the measured object to open or close the second cabin door to enter and exit the purge cabin from the outside.

As a preferred embodiment of the present invention, the shape of the second cabin door is a rectangular plate, one side of which is hinged to the bulkhead of the purge cabin, and the upper and lower corners of the other side are respectively provided with magnets , the bulkhead of the purging cabin is opposite to the position where the magnet is installed on the second cabin door, and an adsorption piece that attracts the magnet is installed.

The beneficial effect of adopting the above further scheme is that the magnet on the second cabin door and the adsorption piece on the bulkhead of the purge cabin can generate mutual attraction, thereby opening or closing the second cabin door, and the operation is simple and convenient.

As another preferred embodiment of the present invention, the aerosol inlet of the test chamber is in the shape of a circular hole, and is connected to an external aerosol generator through a pipe.

The beneficial effect of adopting the above further scheme is that it is convenient to connect the aerosol connecting pipe with the test chamber, so that the aerosol particles produced by the aerosol generator can effectively enter the test chamber for test experiments.

As another preferred embodiment of the present invention, a metal plate with a hole is also arranged in the cabin of the test cabin, and the metal plate with a hole is fixedly connected with the bulkhead of the test cabin to make the test cabin The gas inside is mixed evenly and can place the gas supply tube, sampling tube and test tube.

The beneficial effect of adopting the above-mentioned further scheme is: the evenly distributed small holes on the perforated metal plate can make the solid particles entering the cabin mix evenly with the gas in the cabin, because the bulkhead of the test cabin is smooth and cannot be fixedly placed. For the connecting pipe, a metal plate with holes is arranged in the cabin of the test cabin, so that all kinds of connecting pipes pass through the holes of the metal plate with holes for fixed placement.

As another preferred embodiment of the present invention, the exhaust pipe is a four-section pipeline connected end to end, the side of the exhaust pipe close to the exhaust device is the first exhaust pipe, and the exhaust pipe The side away from the exhaust device and close to the first hatch is a second exhaust pipe, and a third exhaust pipe and a first exhaust pipe are connected between the first exhaust pipe and the second exhaust pipe. Four exhaust pipes.

The beneficial effect of adopting the above-mentioned further scheme is: the exhaust pipe is arranged circumferentially along the bottom wall of the test chamber in four sections of pipes connected end to end, so that the gas in the test chamber has a uniform exhaust volume when it is discharged from the exhaust pipe, and this The setting method is simple and easy to operate.

As another preferred embodiment of the present invention, the upper surface of the exhaust pipe is equidistantly arranged with exhaust holes, and the diameter of the exhaust holes on the upper surface of the first exhaust pipe is 5mm. The apertures of the exhaust holes on the upper surface of the second exhaust pipe are all 10mm, and the apertures of the exhaust holes on the third exhaust pipe and the fourth exhaust pipe are along the exhaust device to the first exhaust pipe. The direction of the hatch is set in order from small to large.

The beneficial effect of adopting the above-mentioned further scheme is: the gas in the test chamber enters the exhaust pipe through the exhaust hole, which is conducive to the circulation of the gas, and the closer to the exhaust pipe of the exhaust device, the greater the exhaust wind speed and pressure. Therefore, this The size setting method of the exhaust hole effectively makes the wind speed uniform and stable when the gas in the test chamber is discharged through the exhaust pipe, so as not to affect the quality of the test experiment.

As another preferred embodiment of the present invention, a fan is also provided on the top inner bulkhead of the test cabin.

The beneficial effect of adopting the above further solution is that: by setting a fan on the top inner bulkhead of the test cabin, the air in the test cabin can be circulated.

Description of drawings

Fig. 1 is the overall structure schematic diagram of a preferred embodiment of the experimental cabin of the present invention;

Fig. 2 is a schematic structural view of a preferred embodiment of the first cabin door of the present invention;

FIG. 3 is a top view of FIG. 1 .

In the accompanying drawings, the list of parts represented by each label is as follows:

1. Test cabin, 2. Purge cabin, 3. Exhaust pipe, 4. Exhaust device, 51. First cabin door, 52. Second cabin door, 6. Connection port for aerosol generation channel, 7. Air supply pipe Connection port, 8. Sampling tube connection port, 9. Test tube connection port, 10. Pressure transmitter, 11. Pressure gauge, 12. Connecting pipe, 13. Magnet, 14. Metal plate with holes, 15. The first row Air duct, 16, the second exhaust duct, 17, the third exhaust duct, 18, the fourth exhaust duct, 19, the fan.

detailed description

The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

As shown in Figure 1, a kind of solid particle protective clothing detection experiment cabin, it comprises test cabin 1, purge cabin 2, exhaust pipe 3 and exhaust device 4, and described purge cabin 2 is arranged in described test cabin 1 On one side of the bulkhead, the side bulkhead of the test chamber 1 is provided with a first hatch 51 communicating with the purge chamber 2, and the bulkhead of the purge chamber 2 is provided with a door that communicates with the outside world. The second cabin door 52, the exhaust device 4 communicates with the side of the test cabin 1 away from the purge cabin 2, and the bulkhead of the test cabin 1 is provided with an aerosol generation channel connection port 6, Air supply pipe connection port 7, sampling pipe connection port 8, test pipe connection port 9, pressure transmitter 10 and pressure gauge 11, the exhaust pipe 3 is arranged circumferentially along the bottom wall of the test chamber 1, and the exhaust pipe The side of the pipe 3 close to the exhaust device 4 communicates with the exhaust device 4 through a connecting pipe 12 .

During the test, the subject to be tested enters the test chamber 1 wearing the protective clothing to be tested, and the external aerosol generator communicates with the aerosol generation channel connection port 6 in the test chamber 1 through the aerosol connecting pipe, so that the aerosol generation The aerosol particles generated by the detector enter the test chamber 1. There are four sampling tube connection ports 8 in the test cabin 1, all of which are used to connect with the sampling tubes. One of the sampling tubes is used to sample the aerosol particles in the test cabin, and the other three sampling tubes should be close to The aerosol particles on the back chest, back waist and side of the knees of the subject are sampled. There are three test tube connection ports 9 in the test chamber 1, all of which are used to connect with the test tubes, and the three test tubes perform aerosol particle test on the test parts in the protective clothing of the tested object. The test chamber 1 is provided with three air supply pipe connection ports 7, all of which are used to connect with the air supply pipe. The three air supply pipes supply air to the test chamber 1 to stabilize the air pressure in the test chamber 1. A pressure transmitter 10 and a pressure gauge 11 are also provided in the test chamber 1 for monitoring the air pressure in the test chamber 1 so as to make appropriate adjustments to the test. In order to circulate the gas in the test chamber 1 , an exhaust pipe 3 is provided at the bottom of the test chamber 1 , the gas flows through the exhaust pipe 3 to the exhaust device 4 , and is discharged from the test chamber 1 from the exhaust device 4 . After the test object finishes the test experiment in the test cabin 1, the first cabin door 51 is opened to enter the purge cabin 2. sweep.

Preferably, the aerosol inlet 6 of the test chamber is in the shape of a circular hole, and is connected to an external aerosol generator through a pipe. Due to the large molecular mass of the aerosol particles, the test cabin aerosol inlet 6 is preferably arranged at the upper middle position of the bulkhead in the test cabin 1, so that the aerosol particles can pass through the test cabin aerosol inlet 6 When entering the test chamber 1, it mixes evenly with the gas in the test chamber 1.

Preferably, a perforated metal plate 14 is also provided in the cabin of the test cabin 1, and the perforated metal plate 14 is fixedly connected with the bulkhead of the test cabin 1, and can be used to place an air supply pipe, a sampling pipe and a test pipe . The height of the perforated metal plate 14 is set according to the convenience when the measured object enters the test chamber 1 for testing.

As shown in Figure 2, in a preferred embodiment of the present invention, the shape of the first hatch 51 is a rectangular plate, one side of which is hinged with the bulkhead of the test cabin 1, and the other side is The upper corner and the lower corner are respectively provided with magnets 13, and the bulkhead of the test cabin 1 is provided with the position where the magnet 13 is provided with respect to the first cabin door 51. Adsorbents that attract each other with the magnet 13 are installed. A hatch 51 is magnetically connected to the bulkhead of the test chamber 1 . It should be noted that the adsorption part on the bulkhead of the test chamber 1 may specifically be a metal part that can attract each other with the magnet 13 . The first cabin door 51 can also be connected with the bulkhead of the test cabin 1 by locking, buckling, etc., as long as it is convenient for the object under test to open or close the first cabin door 51 to enter or exit the test cabin 1. Any connection structure can be used, which is not limited here.

In a preferred embodiment of the present invention, the shape of the second hatch 52 is a rectangular plate, one side of which is hinged to the bulkhead of the purge cabin 2, and the upper and lower corners of the other side are respectively A magnet 13 is provided, and the position where the magnet 13 is provided on the bulkhead of the purging cabin 2 relative to the second cabin door 52 is equipped with an adsorbing piece that attracts each other with the magnet 13, and the second cabin door 52 It is magnetically connected with the bulkhead of the purge chamber 2. It should be noted that the adsorption piece on the bulkhead of the purge chamber 2 may specifically be a metal piece that can attract each other with the magnet 13 . The second cabin door 52 can also be connected with the bulkhead of the purge cabin 2 by other methods such as locking and buckling, as long as it is convenient for the object to be measured to open or close the second cabin door 52 to enter or exit from the outside. The connection structure of the purge cabin 2 is acceptable, and is not limited here.

As shown in Fig. 3, in another preferred embodiment of the present invention, the exhaust pipe 3 is a four-section pipeline connected end to end, and the side of the exhaust pipe 3 close to the exhaust device 4 is the first Exhaust pipe 15, the side of the exhaust pipe 3 away from the exhaust device 4 and close to the first hatch 51 is a second exhaust pipe 16, the first exhaust pipe 15 is connected to the first exhaust pipe 15 A third exhaust pipe 17 and a fourth exhaust pipe 18 are connected between the two exhaust pipes 16 .

Further, the upper surface of the exhaust pipe 3 is equidistantly arranged with exhaust holes, the diameter of the exhaust holes on the upper surface of the first exhaust pipe 15 is 5mm, and the second exhaust pipe 16 The apertures of the exhaust holes on the upper surface are all 10mm, and the apertures of the exhaust holes on the third exhaust pipe (17) and the fourth exhaust pipe 18 are along the exhaust device 4 to the first exhaust pipe. The direction of the cabin door 51 is set from small to large in turn.

It should be noted that the measured object can use an anemometer to measure the exhaust holes of the exhaust pipe 3, try to make the wind speeds of each exhaust hole consistent, and choose whether to block some of the exhaust holes at intervals according to the wind speed measurement results.

In another preferred embodiment of the present invention, a fan 19 may also be provided on the top inner bulkhead of the test chamber 1 to circulate the air in the test chamber 1 . Preferably, four fans 19 are distributed at the four corners of the top inner bulkhead of the test chamber 1 .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (10)

1. a solid particle protective clothing detection experiment cabin, is characterized in that, comprises test cabin (1), purge cabin (2), exhaust pipe (3) and exhaust device (4), described purge cabin ( 2) It is arranged on a side bulkhead of the test cabin (1), and a first cabin door (51) communicating with the purge cabin (2) is arranged on the side bulkhead of the test cabin (1). ), the bulkhead of the purging cabin (2) is provided with a second cabin door (52) communicating with the outside world, and the exhaust device (4) and the test cabin (1) are away from the purging cabin One side of (2) is connected, and the bulkhead of the test cabin (1) is provided with an aerosol generation channel connection port (6), an air supply pipe connection port (7), a sampling pipe connection port (8), a test tube connection port port (9), pressure transmitter (10) and pressure gauge (11), the exhaust pipe (3) is circumferentially arranged along the bottom wall of the test chamber (1), and the exhaust pipe (3) is close to One side of the exhaust device (4) communicates with the exhaust device (4) through a connecting pipe (12). 2. The solid particle protective clothing detection experimental cabin according to claim 1, wherein one side of the first hatch (51) is hinged with the bulkhead of the test cabin (1), and the other side is hinged with the bulkhead of the test cabin (1). The bulkheads of the test chamber (1) are magnetically connected. 3. The solid particle protective clothing detection experimental cabin according to claim 2, characterized in that, the shape of the first cabin door (51) is a rectangular plate shape, and one side of it is connected to that of the testing cabin (1). The bulkhead is hinged, and the upper and lower corners of the other side are respectively provided with magnets (13), and the bulkhead of the test cabin (1) is provided with the position of the magnet (13) relative to the first hatch door (51). An absorbing piece that is mutually attracted to the magnet (13) is installed. 4. solid particle protective clothing detection experiment cabin according to claim 1, is characterized in that, one side of described second cabin door (52) is hinged with the bulkhead of described purge cabin (2), and the other side Magnetically connected to the bulkhead of the purge chamber (2). 5. solid particle protective clothing detection experiment cabin according to claim 4, is characterized in that, the shape of described second cabin door (52) is rectangular plate shape, and its one side and described purge cabin (2) The bulkhead of the purge cabin (2) is hinged, and the upper and lower corners of the other side are respectively provided with magnets (13), and the bulkhead of the purging cabin (2) is provided with the magnet (13) relative to the second cabin door (52). The position is installed with the adsorption piece that attracts each other with the magnet (13). 6. The solid particle protective clothing detection experimental cabin according to claim 1, characterized in that, the shape of the test cabin aerosol air inlet (6) is a circular hole, and is connected with an external aerosol generator through a pipeline. 7. solid particle protective clothing detection experiment cabin according to claim 1, is characterized in that, in the cabin of described test cabin (1), also be provided with perforated metal plate (14), described perforated metal plate (14) ) is fixedly connected with the bulkhead of the test cabin (1), and is used to make the gas in the test cabin (1) mix evenly and can place an air supply pipe, a sampling pipe and a test pipe. 8. The solid particle protective clothing detection experimental cabin according to claim 1, characterized in that, the exhaust pipe (3) is a four-section pipeline connected from end to end, and the exhaust pipe (3) is close to the exhaust pipe. One side of the device (4) is the first exhaust pipe (15), and the side of the exhaust pipe (3) away from the exhaust device (4) and close to the first hatch (51) is the second Two exhaust ducts (16), a third exhaust duct (17) and a fourth exhaust duct (18) are connected between the first exhaust duct (15) and the second exhaust duct (16) . 9. solid particle protective clothing detection experiment cabin according to claim 8, is characterized in that, the arrangement of equidistant intervals on the upper surface of the exhaust pipe (3) is provided with exhaust holes, and the first exhaust duct ( 15) The apertures of the exhaust holes on the upper surface are all 5mm, and the apertures of the exhaust holes on the upper surface of the second exhaust pipe (16) are all 10mm, and the third exhaust pipe (17) and the first exhaust pipe (17) The diameters of the exhaust holes on the four exhaust pipes (18) are set from small to large along the direction from the exhaust device (4) to the first cabin door (51). 10. The solid particle protective clothing detection experimental cabin according to any one of claims 1-9, characterized in that a fan (19) is also provided on the top inner bulkhead of the testing cabin (1).