JPH0665847U - Sample collector for gas detection - Google Patents

Abstract

(57) [Summary] [Objective] Even if the sample collector falls in the reservoir and the sample inlet is submerged in the reservoir, it is possible to effectively collect only the gas without absorbing water. [Composition] A watertight / air-permeable property in which a pipe port for leading out the gas in the cylinder to the outside is formed at a central position of a side wall of the cylinder, and the gas is allowed to pass through both ends of the cylinder without passing water. A sample collector for gas detection that covers and attaches the sheet in a sealed state.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sample collector of a so-called gas collection type gas detection device in which a gas at a place to be detected is sucked into the device by a pump incorporated in the gas detection device.

[0002]

[Prior art]

 Conventionally, when entering a manhole or an underground cave, the presence or absence of gas, especially toxic gas, has been detected to ensure the safety of the human body. Since there is a risk of damaging the detection equipment by sucking the accumulated water together with the sample at the time of detection, as a method for preventing this, for example, Japanese Patent Application No. 51-252553 can be used. is there.

[Problems to be solved by the device]

 However, in the case of the conventional method, water absorption was inevitable when the sample collection port was put into the reservoir water under suction or the sample collection port was tumbled in the reservoir water. Therefore, the object of the present invention is to collect gas only without collecting water even if the sample collector falls over in the reservoir and the sample inlet is immersed in the reservoir. The present invention is to provide a sample collector.

[Means for Solving the Problems]

 That is, according to the present invention, a pipe port is formed at a central position of a side wall of a cylindrical tubular body to guide the gas inside the tubular body to the outside through a pipe, and the watertightness that allows gas to pass through at both ends of the tubular body. -It is in a gas detector sample collector with a breathable sheet covered and sealed.

[0003]

[Action]

 The sample detector for gas detection, which is formed of the cylindrical body and the watertight / air-permeable sheet as described above, can function as a hollow container for water and can be constructed so as not to be submerged unless external force is applied. Because both ends of the cylinder are breathable, part of the seat is always exposed to the atmosphere, even if it floats horizontally on the water surface or even if one end of the cylinder is completely submerged. The gas can be collected from there and sent to the gas detector. That is, in the state where the pipe port of the cylindrical gas sampler for gas detection is connected to the suction pump of the gas detector through the pipe, put it in the manhole of the underground cave where the sampler is installed, When there is accumulated water at the bottom of the manhole, the sample collector usually floats above the accumulated water with the pipe opening facing up and the cylinder lays sideways. Since most of the gas is exposed to the atmosphere, only the gas in the manhole is collected from the sheet part of the sample collector, and it is necessary to reliably detect the gas necessary for ensuring safety, especially the presence or absence of toxic gas. You can

[0004]

[Effect of device]

 As a result, the present invention effectively collects only gas without absorbing water even if the sample collector falls in the reservoir water and the sample inlet is immersed in the reservoir water. There is an effect that the safety can be surely maintained.

[0005]

【Example】

 Next, a configuration of an embodiment of the present invention will be described with reference to the drawings. At the center of the side wall of the cylindrical body 1 made of transparent plastic, a pipe port 3 is formed to guide the gas inside the body 1 to the outside through a pipe 2, and water is provided at both ends of the body 1. A watertight / breathable sheet 4 that allows gas to pass therethrough is hermetically attached to the end of the tubular body 1 via a cap 5 that can be tightly fitted, and the cap 5 has a watertight / breathable sheet 4 attached thereto. A large number of slit-shaped ventilation holes 6 are formed to allow ventilation between the atmosphere and the inside of the cylindrical body 1 via the.

Next, the operation of this embodiment will be described. Since the gas-detecting sample collector 7 configured as described above is basically formed of the tubular body 1 and the watertight / air-permeable sheet 4, it acts as a hollow container for water and applies an external force. Unless it is submerged unless it is submerged, and both ends of the cylinder 1 are breathable, even if it floats horizontally on the water surface, or if one end of the cylinder 1 is completely submerged. However, a part of the sheet 4 is always exposed to the atmosphere, from which the gas can be collected and sent to the gas detection device. That is, in a state in which the pipe port 3 of the gas sample collector 7 having a cylindrical shape is connected to the suction pump of the gas detector through the pipe, the sample sampler 7 is inserted into the manhole of the underground cavern where it is installed. When there is accumulated water at the bottom of the manhole, the sample collector 7 usually floats on the accumulated water with the pipe port 3 facing up and the cylinder 1 lying sideways. In that case, both ends of the cylinder 1 Since most of the watertight / breathable sheet 4 of is exposed to the atmosphere, the gas in the manhole is collected only from the slit-shaped vents 6 of the caps 5 at both ends of the sample collector 7 through the sheet 4 part. Therefore, it is possible to reliably detect the presence or absence of gas, especially toxic gas, necessary for ensuring the safety of workers entering the manhole or the like.

The watertight / breathable sheet 4 is attached to the tubular body 1 in a hermetically sealed state by using the cap 5 or by attaching the watertight / breathable sheet 4 into a cap shape with an adhesive, or However, it can be replaced with an optional string, a plastic band, or the like.

[Brief description of drawings]

FIG. 1 is a perspective view of a gas-detecting sample collector 7.

FIG. 2 is a front view of a gas-detecting sample collector 7.

FIG. 3 is a side view of a gas-detecting sample collector 7.

[Explanation of symbols]

 1 Cylindrical body 2 Tube 3 Piping port 4 Watertight / breathable sheet 5 Cap 6 Slit-shaped ventilation port 7 Gas sample collector

Claims (1)

[Scope of utility model registration request] 1. A pipe port for leading the gas in the cylinder to the outside through a pipe is formed at the center of the side wall of the cylinder.
A sample collector for gas detection, characterized in that a watertight / air-permeable sheet that allows gas to pass therethrough is sealed and attached to both ends of the cylindrical body in a sealed state.