CN205720166U - Liquid level volatilization gas detection device - Google Patents

Abstract

The utility model discloses liquid level volatilization gas detection device, wherein: include the gas collecting room of kickboard and lower openings, the cavity of up/down perforation it is provided with in kickboard, bottom, gas collecting room is inserted to seal with kickboard in cavity and is fixed, when kickboard is positioned on the water surface, gas collecting room lower edge is totally submerged and makes the lower openings of gas collecting room be closed by water body in water, top, gas collecting room offers aspirating hole and air equalizer opening, aspirating hole has been inserted into exhaust tube, exhaust tube connects gas componant detector, gas collecting room is connected by air equalizer opening with outside air, the air pressure making gas collecting indoor balances with ambient pressure.This utility model has simple in construction, gas collecting indoor and outdoor pressure equilibrium, advantage that accuracy of detection is high.

Description

Liquid surface volatile gas detection device

technical field

The utility model belongs to the technical field of gas sampling devices, in particular to a liquid surface volatile gas detection device.

Background technique

At present, the in-situ sampling method for volatile gases in sewage is mainly the closed air chamber method. That is, a closed container with a certain unit area is covered on the surface of the sewage to be tested to keep the water surface sealed, and the volatilization of the gas to be detected on the surface of the sewage in the closed container is measured within a unit of time. Due to the closed air chamber structure sampling, the gas in the airtight chamber needs to be pumped into the detection device for detection, resulting in a decrease in the air pressure in the airtight chamber, changing the surface environment of the water body to be tested, and affecting the accuracy of the detection results.

Utility model content

The technical problem to be solved by the utility model is to provide a liquid surface volatile gas detection device with simple structure, balanced pressure inside and outside the gas collection chamber and high detection accuracy for the above-mentioned deficiencies in the prior art.

For realizing above-mentioned technical purpose, the technical scheme that the utility model takes is:

Liquid surface volatile gas detection device, including: a floating plate and a gas collection chamber with a lower opening. The floating plate is provided with a through cavity that penetrates up and down. The lower part of the gas collection chamber is inserted into the through cavity and sealed with the floating plate. The floating plate is placed on the water surface When it is up, the lower edge of the gas collection chamber is completely submerged in water so that the lower opening of the gas collection chamber is closed by the water body. The upper part of the gas collection chamber is provided with a suction hole and a pressure balance hole. A suction pipe is inserted in the suction hole, and the suction pipe is connected to the gas component detection. The air pressure balance hole communicates the gas collection chamber with the outside air, so that the air pressure in the gas collection chamber is balanced with the outside air pressure.

In order to optimize the above technical solutions, the specific measures taken also include:

The lower part of the above-mentioned gas collection chamber is provided with several fixing plates, and the lower part of the floating plate is provided with a fixing groove matched with the fixing plate. The lower end of the gas collecting chamber is inserted into the lower part of the through cavity to fix the fixing plate in the fixing groove.

A sealing plug is arranged on the above-mentioned air extraction hole, and the sealing plug seals the gap between the air extraction pipe and the air extraction hole.

The gas collection chamber mentioned above is made of transparent material.

Above-mentioned floating board is foam board.

The above-mentioned sealing plug is a rubber plug.

The liquid surface volatile gas detection device of the utility model mainly has two structures of a floating plate and a gas collection chamber. The density of the floating plate is smaller than that of water, so that the gas detection device can float on the water surface. The gas collection chamber is a bottom opening. Cover body, when the device is floating on the water surface, the lower opening of the gas collection chamber is submerged in the water, the covered water surface volatilizes the gas into the gas collection chamber, and the exhaust pipe continuously extracts the gas in the gas collection chamber to the gas component detector to detect the The components of the gas to be measured in the pumped gas, according to the detected time and concentration of the gas to be measured, the rate of volatilization of the gas on the liquid surface can be obtained. Since the gas collection chamber of the utility model has an air pressure balance hole, the air pressure in the gas collection chamber is balanced with the external air pressure, and the air pressure in the gas collection chamber will not be affected when the gas is extracted, so that the liquid level environment will not be changed, and the detection accuracy is better than that of the existing one. The gas detection device is high. The utility model has the advantages of simple structure and convenient splicing, and is very suitable for field operation.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the schematic diagram of floating plate;

Fig. 3 is the schematic diagram of gas collection chamber;

Fig. 4 is the bottom view of floating plate;

Fig. 5 is the bottom view of Fig. 1;

FIG. 6 is a perspective view of FIG. 1 .

The reference signs are: floating plate 1, through cavity 11, fixed groove 12, gas collection chamber 2, air extraction hole 21, air pressure balance hole 22, fixed plate 23, sealing plug 24, air extraction pipe 3, gas component detector 4 .

detailed description

Below in conjunction with accompanying drawing, the specific embodiment of the utility model is further described:

The liquid level volatile gas detection device of the present utility model includes a floating plate 1 and a gas collection chamber 2 with a lower opening, the floating plate 1 is provided with a through cavity 11 that penetrates up and down, and the lower part of the gas collection chamber 2 is inserted into the through cavity 11 and The floating plate 1 is sealed and fixed. When the floating plate 1 is placed on the water surface, the lower edge of the gas collection chamber 2 is completely submerged in the water so that the lower opening of the gas collection chamber 2 is closed by the water body. The upper part of the gas collection chamber 2 is provided with a suction hole 21 and an air pressure balance. The hole 22 and the pumping hole 21 are inserted with a pumping tube 3, the pumping tube 3 is connected to the gas component detector 4, and the air pressure balance hole 22 communicates the gas collection chamber 2 with the outside air, so that the air pressure in the gas collection chamber 2 is balanced with the outside air pressure.

In the embodiment, the lower part of the gas collection chamber 2 is provided with several fixing plates 23, the lower part of the floating plate 1 is provided with a fixing groove 12 matching with the fixing plates 23, and the lower end of the gas collecting chamber 2 is inserted into the lower part of the through cavity 11, so that the fixing plate 23 is fixed in the fixing groove 12.

In the embodiment, a sealing plug 24 is arranged on the air extraction hole 21 , and the sealing plug 24 seals the gap between the air extraction pipe 3 and the air extraction hole 21 .

In the embodiment, the gas collection chamber 2 is made of transparent material.

In the embodiment, the floating board 1 is a foam board.

In an embodiment, the sealing plug 24 is a rubber plug.

When using the liquid surface volatile gas detection device of the present utility model, the gas collection chamber 2 is inserted into the through cavity 11 of the floating plate 1, and then the fixing plate 23 is fixed in the fixing groove 12, so that the gas collection chamber 2 and the floating plate 1 Then insert the exhaust pipe 3 into the exhaust hole 21. After the whole equipment is connected, put the liquid level volatile gas detection device in the water body to be tested to float, and then continue to pump at a low speed to detect the gas in the collection chamber 2 in real time. The concentration of the gas to be measured is obtained by changing the concentration to obtain the release rate of the gas to be measured in the water body per unit area.

The above are only preferred implementations of the utility model, and the scope of protection of the utility model is not limited to the above-mentioned embodiments, and all technical solutions under the thinking of the utility model all belong to the scope of protection of the utility model. It should be pointed out that for those of ordinary skill in the art, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

Claims (6)

1. The liquid surface volatile gas detection device is characterized in that: a gas collection chamber (2) comprising a floating plate (1) and a lower opening, the floating plate (1) is provided with a through cavity (11) that penetrates up and down, The lower part of the gas collection chamber (2) is inserted into the through cavity (11) and sealed and fixed with the floating plate (1). When the floating plate (1) is placed on the water surface, the lower part of the gas collection chamber (2) The edge is completely submerged in water so that the lower opening of the gas collection chamber (2) is closed by the water body, and the upper part of the gas collection chamber (2) is provided with an air extraction hole (21) and an air pressure balance hole (22), and the air extraction hole ( 21) An exhaust pipe (3) is inserted into the interior, the exhaust pipe (3) is connected to the gas component detector (4), and the air pressure balance hole (22) communicates the gas collection chamber (2) with the outside air, so that The air pressure in the gas collection chamber (2) is balanced with the outside air pressure. 2. The liquid surface volatile gas detection device according to claim 1, characterized in that: the lower part of the gas collection chamber (2) is provided with several fixed plates (23), and the lower part of the floating plate (1) A fixing groove (12) matching the fixing plate (23) is provided, the lower end of the gas collection chamber (2) is inserted into the lower part of the through cavity (11), so that the fixing plate (23) is fixed in the fixing groove (12) . 3. The liquid surface volatile gas detection device according to claim 2, characterized in that: said air extraction hole (21) is provided with a sealing plug (24), and said sealing plug (24) seals the air extraction pipe (3 ) and the gap between the air hole (21). 4. The liquid level volatile gas detection device according to claim 3, characterized in that: the gas collection chamber (2) is made of transparent material. 5. The liquid level volatile gas detection device according to claim 4, characterized in that: said floating plate (1) is a foam plate. 6. The liquid surface volatile gas detection device according to claim 5, characterized in that: the sealing plug (24) is a rubber plug.