CN217006561U

CN217006561U - Novel automatic sampling static case

Info

Publication number: CN217006561U
Application number: CN202220469507.1U
Authority: CN
Inventors: 白炜; 徐磊; 商光烈; 房佳辰; 曾红丽
Original assignee: Lanzhou Jiaotong University
Current assignee: Lanzhou Jiaotong University
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-07-19
Anticipated expiration: 2032-03-04

Abstract

The utility model discloses a novel automatic sampling static box which comprises a box body with an opening at the bottom, wherein a temperature and humidity sensor and a fan are arranged in the box body, and the temperature and the humidity in the box body are detected in real time through the temperature and humidity sensor; the gas collecting port is arranged on the box body, one port connected with the three-way valve can be disassembled through the hose on the gas collecting port, the other two ports of the three-way valve are respectively connected with the air bag and the gas collecting bag, the check valve is arranged on the connecting pipe between the three-way valve and the gas collecting bag, and gas in the gas collecting bag can not flow back through the check valve. The air bag type static box is simple in structure, the air collecting port, the air bag and the air collecting bag of the box body are connected through the three-way valve, and the static box is externally connected with the three-way valve and can be detached, so that the air bag type static box is convenient to carry; thereby realize the collection of static incasement gas through the switch of control three-way valve, convenient operation is swift, and the sampling process is accurate, high-efficient, and analysis result reliability improves.

Description

Novel automatic sampling static case

Technical Field

The utility model belongs to the technical field of gas sampling, and particularly relates to a novel automatic sampling static box.

Background

With the rapid development of industrial technology, the atmospheric environment is constantly changing. Greenhouse gas (CO) in the atmosphere₂、CH₄Predominantly) and the greenhouse effect thereby induced is continuing and increasing. In the process of studying greenhouse gas emission laws, gas collection is a critical step, and a static tank is one of the important tools. The static box method is simple and convenient to operate, simple in principle, high in sensitivity and low in cost, and therefore, the static box method is widely applied to in-situ experiments in related fields.

The static tank is a closed bottomless tank body made of chemically stable materials (such as stainless steel and organic glass) and covers the ground to collect gas. The box is generally regular in shape. Because the vegetation to be measured is different, the design of the height of the box body is also different. If the box body can not influence the rice character when the rice soil is measured, the design of the box body with higher height is adopted in order to cover the rice into the internal environment, and the height of the box body is reduced when the low vegetation is measured. In addition, in order to mix the gas in the box uniformly, a small fan is arranged in the box body, and the box body needs to be opened for a period of time before sampling. Since a large sample volume tends to cause a significant drop in internal pressure, foreign static tanks are usually equipped with a vent line to equalize the pressure inside and outside the tank.

At present, most static boxes are used for sampling by using an injector, the sampling steps are complex, the sampling process is difficult to be accurate and efficient, and the disturbance to the air pressure in the box body is large, so that the reliability of an analysis result is reduced; the capacity of the injector for sampling can not be matched with the capacity of the gas production bag usually, the gas production bag can be filled with the gas production bag after multiple times of sampling, and the gas production bag is easy to waste and wastes time and labor due to the lack of a check device between the gas production bag and the injector. The temperature and humidity in the existing static box cannot be monitored in real time, and the temperature and humidity information can be collected only after the box body needs to be moved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel automatic sampling static box, which aims to solve the problems in the prior art in the background technology.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a novel automatic static case of sampling, includes bottom open-ended box and sets up temperature and humidity sensor and the fan in the box, be equipped with the gas production mouth on the box, can dismantle an opening of connecting the three-way valve through the hose on the gas production mouth, gasbag and gas production bag are connected respectively to the other two openings of three-way valve, be equipped with the check valve on the connecting pipe between three-way valve and the gas production bag. The static box during sampling is sealed by the air bag, the static box, the air bag and the gas production bag are connected by the three-way valve, and gas in the static box is directly injected into the gas production bag by matching the air bag and the three-way valve.

Preferably, the outer wall of the box body is provided with a display screen, the display screen is electrically connected with the temperature and humidity sensor, and the screen displays the temperature and humidity of air in the box body in real time, so that the collection is convenient; the storage battery is arranged in the box body, and the display screen, the temperature and humidity sensor and the fan are powered through the storage battery.

Preferably, the bottom of the box body is provided with a hollow square-shaped base, and the bottom of the square-shaped base is vertically provided with an inserting plate. The plug board is embedded into the ground surface, and the base is attached to the ground surface, so that the measuring surface has a stable physical boundary.

Preferably, the insertion plate is arranged around the bottom of the base.

Preferably, the base outside level is equipped with the limiting plate, and supplementary base limits the depth that the picture peg inserted the earth's surface on the one hand, and on the other hand increases the stability of box.

Compared with the defects and shortcomings of the prior art, the utility model has the following beneficial effects:

(1) the three-way valve is adopted to connect the box body, the air bag and the gas production bag, and the box body is communicated with the air bag or the air bag is communicated with the gas production bag by controlling the switch of the three-way valve, so that the gas in the static box is collected, the operation is convenient and fast, and the defect of injector sampling is overcome.

(2) The static box is externally connected with the three-way valve and can be detached, so that the static box is convenient to carry; a temperature and humidity sensor is arranged in the box, and the temperature and the humidity in the box are detected in real time.

Drawings

Fig. 1 is a schematic structural diagram of a novel automatic sampling static box according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view at a-a in fig. 1.

Fig. 3 is a schematic bottom view of a novel automatic sampling static box according to an embodiment of the present invention.

Fig. 4 is a schematic view of the internal structure of the bottom of the case body with a limiting plate arranged outside the base.

FIG. 5 is a bottom view of the case with limiting plates on both sides of the base.

FIG. 6 is a bottom view of the case with a limiting plate around the base.

In the figure: 1-a box body; 2-a display screen; 3-a temperature and humidity sensor; 4-a fan; 5-gas extraction port; 6-a hose; 7-a three-way valve; 8-air bag; 9-air bag; 10-a check valve; 11-a base; 12-inserting plates; 13-limiting plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the utility model.

Referring to fig. 1-2, the novel automatic sampling static box comprises a display screen 2 arranged on the outer wall of a box body 1, a temperature and humidity sensor 3 and a fan 4 are arranged in the box body 1, the display screen 2 is electrically connected with the temperature and humidity sensor 3, and the screen displays the temperature and humidity in the box body 1 in real time, so that the collection is convenient; the fan 4 is arranged at the upper part in the box body 1 and used for mixing gas in the box body, and the storage battery arranged in the box body 1 supplies power to the display screen 2, the temperature and humidity sensor 3 and the fan 4. The top of box 1 is equipped with adopts gas port 5, can dismantle the one end of coupling hose 6 on adopting gas port 5, and a port of connecting three-way valve 7 can be dismantled to the other end of hose 6, and gasbag 8 and gas bag 9 are connected respectively to two other ports of three-way valve 7, seal when adopting gasbag 8 to sample static case, can dismantle between gas port 5 and the hose 6, can dismantle between hose 6 and the three-way valve 7, conveniently carry. A check valve 10 is arranged on a connecting pipe between the three-way valve 7 and the gas production bag 9, so that gas in the gas production bag 9 can not flow back.

Referring to fig. 1-3, the bottom of the box body 1 is open, a hollow square-shaped base 11 is arranged at the bottom of the box body 1, inserting plates 12 are vertically arranged at the bottom of the square-shaped base 11, and the inserting plates 12 can be arranged around the bottom of the base 11 and are in a square shape. The inserting plate 12 is embedded into the ground surface, and the base 11 is attached to the ground surface, so that the measuring surface has a stable physical boundary.

Referring to fig. 4-6, the outer side of the base 11 is horizontally provided with the limiting plates 13, the limiting plates 13 can be symmetrically arranged on two sides of the base 11, or can be arranged around the base 11, and through the limiting plates 13, on one hand, the auxiliary base 11 limits the depth of the inserting plate 12 inserted into the earth surface, and on the other hand, the stability of the box body 1 and the fitting property of the box body 1 and the earth surface are improved.

The using method comprises the following steps: embedding an inserting plate 12 at the bottom of the static box into the ground surface of vegetation to be measured, attaching a base 11 to the ground surface, adjusting the opening and closing of a three-way valve 7 to enable an air bag 8 to be communicated with a box body 1 during gas production, extruding the air bag 8 to enable gas in the box to enter the air bag 8, adjusting the three-way valve 7 to enable the air bag 8 to be communicated with a gas production bag 9, then extruding the gas in the air bag 8 into the gas production bag 9, and preventing the gas from flowing back through a check valve 10. The above steps are repeated until the gas collection bag 9 is full. And at the same time of sampling, collecting temperature and humidity information during sampling through the temperature and humidity sensor 3 in the box for subsequent gas flux calculation.

The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the utility model, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims

1. The utility model provides a novel automatic static case of sampling, includes bottom open-ended box and sets up temperature and humidity sensor and the fan in the box, its characterized in that, be equipped with the gas production mouth on the box, can dismantle an opening of connecting the three-way valve through the hose on the gas production mouth, gasbag and gas production bag are connected respectively to the other two openings of three-way valve, be equipped with the check valve on the connecting pipe between three-way valve and the gas production bag.

2. The novel automatic sampling static box of claim 1, wherein a display screen is arranged on the outer wall of the box body and is electrically connected with a temperature and humidity sensor; and a storage battery is arranged in the box body and is respectively and electrically connected with the display screen, the temperature and humidity sensor and the fan.

3. The novel automatic sampling static box as claimed in claim 1, wherein the bottom of the box body is provided with a hollow square-shaped base, and the bottom of the square-shaped base is vertically provided with an inserting plate.

4. A novel automatic sampling static box according to claim 3 wherein said insert is disposed about the bottom of the base.

5. The new automatic sampling static box of claim 3, characterized in that a limit plate is horizontally arranged outside the base.