CN216978535U - Static case is used in soil gas collection - Google Patents

Abstract

The utility model discloses a static box for collecting soil gas, which comprises: the ground box, the middle box and the top box are sequentially abutted, and one end of the middle box is fixedly provided with a first insertion pipe; the inside of the top box is divided into an installation cavity and a gas collection cavity, and one end of the top box is fixed with a second insertion pipe; the sealing element comprises an annular groove body filled with sealing liquid, the annular groove body is respectively fixed with the ground box and the middle box, and the first insertion pipe and the second insertion pipe can be inserted into the annular groove body; the balloon is limited in the gas collection cavity, the air pump is communicated with the balloon, and the air outlet pipe is communicated with the gas collection cavity. According to the utility model, the annular groove body, the first insertion pipe and the second insertion pipe are arranged, the annular groove body is filled with the sealing liquid, and the arrangement enables the ground box and the middle box, and the middle box and the top box to be reliably sealed; through setting up air pump, balloon and check valve, operating personnel is when carrying out gaseous collection to static case, and outside air can not get into static incasement, can not dilute the static incasement and wait to detect the gas.

Description

Static case is used in soil gas collection

Technical Field

The utility model relates to the field of greenhouse gas detection, in particular to a static box for collecting soil gas.

Background

The static case that has now on the market adopts water to seal, because static case needs for a long time static in the open air, the water of sealed usefulness evaporates easily, and then causes the leakproofness of static case to reduce, even became invalid.

The experimenter is gathering when gaseous to static case, generally adopts air pump or syringe to extract static incasement portion's gas, because the mode of the extraction of adoption, when extracting gas to static case, static incasement portion can produce the negative pressure, and the outside air can enter into to static incasement along static case and the gap of waiting to detect between the ground, can dilute static incasement original test gas like this, causes the experimental result distortion.

Therefore, how to provide a static box for collecting soil gas, which can overcome the above problems, is a problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a static bin for soil gas collection.

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

a static case for soil gas collection comprising:

the ground box is provided with openings at two ends, and one end of the ground box can be hermetically buckled on the ground to be detected;

the opening of one end of the middle section box is closed, the other end of the middle section box is closed, the closed end of the middle section box can be tightly abutted against one end, away from the ground to be detected, of the ground box, and the closed end of the middle section box is provided with a hole and is fixedly provided with a first insertion pipe communicated with the inside of the middle section box;

the two ends of the top box are closed, a partition plate is fixed in the top box, the top box is divided into an installation cavity and a gas collection cavity by the partition plate, a hole is formed in one closed end of the top box, a second insertion pipe communicated with the gas collection cavity is fixed on the closed end of the top box, and one end, fixed with the second insertion pipe, of the top box can be tightly abutted to the open end of the middle box;

the sealing element comprises an annular groove body with a door-shaped cross section, sealing liquid is filled in the annular groove body, the annular groove body is provided with two annular groove bodies which are respectively fixed with the inner wall of the ground box and the inner wall of the middle box, the first insertion pipe can be inserted into the annular groove body fixed with the ground box and immersed in the sealing liquid, and the second insertion pipe can be inserted into the annular groove body fixed with the middle box and immersed in the sealing liquid;

the subassembly of bleeding, the subassembly of bleeding includes the balloon, the air pump, gas flowmeter, outlet duct and check valve, the balloon is spacing in the gas collection intracavity, air pump and gas flowmeter are all installed in the installation intracavity, the end of giving vent to anger of air pump passes through the pipeline intercommunication with the balloon and has concatenated gas flowmeter between the two, outlet duct one end and gas collection chamber intercommunication, the other end is arranged outside the top case, the check valve concatenates on the outlet duct and its spacing in the installation intracavity, set up the atmospheric pressure balancing hole with the installation chamber intercommunication on the top case.

According to the technical scheme, compared with the prior art, the static box for collecting the soil gas is provided, the annular groove body, the first insertion pipe and the second insertion pipe are arranged, the annular groove body is filled with the sealing liquid, the ground box and the middle box and the top box can be reliably sealed through the arrangement, the annular groove body is limited in the ground box and the middle box, the sealing liquid is prevented from being exposed outside the static box, the sealing liquid is prevented from being rapidly evaporated, and the sealing effect is ensured; through setting up air pump, balloon and check valve, operating personnel is when carrying out gaseous collection to static case, through the inflation effect of balloon for static incasement is in the state of a malleation, and the gas of static incasement portion can "be extruded", and gas is collected to the gas collection bag in through the outlet duct, should set up and ensure operating personnel when carrying out gaseous collection to static case, and outside air can not get into static incasement, can not dilute the gas that the static incasement was waited to detect.

Preferably, an annular baffle I is fixed on the inner wall of the ground box, and the bottom wall of an annular groove body is fixed with the plate surface of the annular baffle I; and a second annular baffle is fixed on the inner wall of the middle box, and the bottom wall of the other annular groove body is fixed with the surface of the second annular baffle. This setting ensures that the annular groove body can be fixed with ground case and middle section case reliably.

Preferably, the sealing member still includes annular arc separation blade, is fixed with an arc separation blade on the both ends wall of the notch department of annular groove body separately, and two arc separation blades are spacing between the arc center of the two, and two arc separation blades are all spacing at the annular groove internally, and the inside and outside wall of intubate one can be separately with the inseparable butt of the extrados of two arc separation blades, the inside and outside wall of intubate two can separately with the inseparable butt of extrados of two arc separation blades. The outer arc face of the arc-shaped separation blade can be tightly abutted to the inner wall and the outer wall of the first insertion pipe and the inner wall and the outer wall of the second insertion pipe, when the first insertion pipe and the second insertion pipe are inserted into the annular groove body respectively, the arc-shaped separation blade can seal the notch of the annular groove body, evaporation loss of sealing liquid is further prevented, and the sealing effect is ensured.

Preferably, the temperature measuring device further comprises a temperature measuring assembly and a storage battery, wherein the temperature measuring assembly comprises a temperature measuring meter, an in-box temperature detecting probe, an out-box surface temperature detecting probe, an out-box soil temperature detecting probe and an out-box air temperature detecting probe, the temperature measuring meter and the storage battery are both arranged in the installation cavity, a display screen of the temperature measuring meter and a display screen of the gas flowmeter are both fixed at one end of the top box, which is far away from the second insertion tube, the temperature measuring meter, the gas pump and the gas flowmeter are all electrically connected with the storage battery, and the temperature measuring meter is respectively in signal communication with the in-box temperature detecting probe, the out-box surface temperature detecting probe, the out-box soil temperature detecting probe and the out-box air temperature detecting probe; the in-box temperature detection probe is fixed with the baffle and is spacing in the gas collection intracavity, and the out-of-box earth temperature detection probe can arrange outside the ground case wait to detect on the earth's surface, and the out-of-box soil temperature detection probe can insert and establish to the out-of-box earth's surface of waiting to detect in, and the out-of-box air temperature detection probe can arrange outside ground case, middle section case and top case. The temperature measurement table can show that when collecting the gas of static incasement portion, the temperature of static incasement external environment helps follow-up gas to collecting to carry out the analysis, guarantees the accuracy of experimental result.

Preferably, the gas collection device further comprises a stirring fan, the stirring fan is limited in the gas collection cavity and fixed with the partition plate, and the stirring fan is electrically connected with the storage battery. This arrangement ensures that the gas inside the static tank can enter the gas collecting bag uniformly.

Preferably, the handle is further included, and the handle is fixed with one end, far away from the second insertion tube, of the top box. This setting can be convenient for carry the operation to the top case.

Preferably, still include buckle and fastener, buckle and fastener adaptation all are fixed with a plurality of buckles on the outer wall of top case and middle section case, all are fixed with a plurality of fasteners on the outer wall of middle section case and ground case, can buckle separately with a plurality of buckles that top case is fixed and establish to with a plurality of fasteners of middle section case fixed on, can buckle separately with a plurality of buckles of middle section case fixed and establish to with a plurality of fasteners of ground case fixed on. This setting ensures that ground case, middle section case and top case can reliably be connected.

Preferably, still include the gear shaping, the gear shaping is fixed with the end wall that the ground case is kept away from the middle section case, and the gear shaping can be inserted and establish to waiting to detect in the ground. This arrangement ensures that the ground box can be reliably inserted into the ground to be detected.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is an isometric view of a static box for soil gas collection;

FIG. 2 is a top view of a static box for soil gas collection;

FIG. 3 is a sectional view in the direction of FIG. 2A-A;

FIG. 4 is a partial enlarged view of FIG. 3B;

FIG. 5 is a partial isometric view of a static box for soil gas collection;

FIG. 6 is a partial isometric view of a static box for soil gas collection;

FIG. 7 is a partial isometric view of a static box for soil gas collection;

FIG. 8 is a partial isometric view of a static box for soil gas collection.

In the figure:

the device comprises a ground box 1, a middle box 2, an insertion tube I3, a top box 4, an air pressure balance hole 40, a partition plate 5, an insertion tube II 6, an annular groove 7, an arc-shaped baffle plate 8, a sealing liquid 9, a balloon 10, an air pump 11, a gas flowmeter 12, an air outlet pipe 13, a check valve 14, an annular baffle I15, an annular baffle II 16, a temperature measuring meter 17, an in-box temperature detecting probe 18, an out-box soil temperature detecting probe 19, an out-box soil temperature detecting probe 20 and an out-box air temperature detecting probe 21.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model discloses a static box for collecting soil gas, which is characterized in that an annular groove body 7, an arc-shaped baffle plate 8 fixed with the annular groove body 7, a first insertion pipe 3 and a second insertion pipe 6 are arranged, sealing liquid 9 is filled in the annular groove body 7, the arrangement ensures that a ground box 1 and a middle box 2 as well as a middle box 2 and a top box 4 can be reliably sealed, the annular groove body 7 is limited in the ground box 1 and the middle box 2, the sealing liquid 9 is prevented from being exposed outside the static box, the rapid evaporation of the sealing liquid 9 is prevented, the outer arc surface of the arc-shaped baffle plate 8 can be tightly abutted against the inner and outer walls of the first insertion pipe 3 and the second insertion pipe 6, when the first insertion pipe 3 and the second insertion pipe 6 are respectively inserted into the annular groove body 7, the arc-shaped baffle plate 8 can seal the notch of the annular groove body 7, the evaporation loss of the sealing liquid 9 is further prevented, and the sealing effect is ensured; by arranging the air pump 11, the balloon 10 and the one-way valve 14, when an operator collects gas in the static box, the static box is in a positive pressure state through the expansion effect of the balloon 10, the gas in the static box can be extruded out, and the gas is collected into the gas collecting bag through the gas outlet pipe 13, so that the arrangement ensures that when the operator collects gas in the static box, external air cannot enter the static box and cannot dilute the gas to be detected in the static box; by providing the stirrer fan 23, this arrangement ensures that the gas inside the static tank can uniformly enter the gas collecting bag; by arranging the temperature measuring assembly, the temperature measuring meter 17 can display the temperature of the internal and external environments of the static box when the gas in the static box is collected, so that the collected gas can be analyzed subsequently, and the accuracy of an experimental result is ensured; by providing the pinch plate 25 and the fastener 26, this arrangement ensures that the floor box 1, the middle box 2 and the top box 4 can be reliably connected.

Examples

Referring to the attached drawings 1-8, which are schematic structural drawings of a whole body and a part of an embodiment of the utility model, the utility model specifically discloses a static box for soil gas collection, which comprises:

the section of the ground box 1 is circular, the two ends of the ground box 1 are opened, the end wall of one opened end of the ground box 1 is edged, the edged end of the ground box 1 can be hermetically buckled on the ground to be detected (not shown in the figure), and the end wall is edged, so that the edged end of the ground box 1 can be inserted into the ground to be detected by a certain depth to ensure the sealing property between the ground box 1 and the ground to be detected;

the section shape of the middle section box 2 is the same as that of the ground box 1, one end of the middle section box 2 is open, the other end of the middle section box 2 is closed, the middle section box 2 and the ground box 1 can be coaxially arranged, the closed end of the middle section box 2 can be tightly abutted to one end, away from the ground to be detected, of the ground box 1, and a cylindrical insertion tube I3 communicated with the inside of the middle section box 2 is coaxially fixed in the closed end of the middle section box 2 in an opening mode;

the top box 4 is provided with a cross section which is the same as that of the ground box 1, two ends of the top box 4 are closed, a partition plate 5 is fixed in the top box 4 in a welding and sealing mode, the plate surface of the partition plate 5 is perpendicular to the axial lead of the top box 4, the top box 4 is divided into an installation cavity and a gas collection cavity by the partition plate 5, a hole is formed in one closed end of the top box 4, a cylindrical insertion tube II 6 communicated with the gas collection cavity is coaxially fixed on the closed end of the top box 4, the top box 4 and the middle box 2 can be coaxially arranged, and one end, fixed with the insertion tube II 6, of the top box 4 can be tightly abutted to the open end of the middle box 2;

the ground box 1, the middle box 2 and the top box 4 are all made of stainless steel.

The sealing element comprises an annular groove body 7 with a door-shaped section, the annular groove body 7 is made of elastic materials, sealing liquid 9 is filled in the annular groove body 7, the sealing liquid 9 is water or oily liquid, the sealing liquid 9 in the embodiment is oily liquid, and the oily liquid can slow down the evaporation speed and ensure the air tightness; the annular groove bodies 7 are arranged and are respectively fixed with the inner wall of the ground box 1 and the inner wall of the middle-section box 2, the first insertion pipe 3 can be inserted into the annular groove body 7 fixed with the ground box 1 and immersed in the sealing liquid 9, and the second insertion pipe 6 can be inserted into the annular groove body 7 fixed with the middle-section box 2 and immersed in the sealing liquid 9;

an air pumping component, the air pumping component comprises a balloon 10, an air pump 11, a gas flowmeter 12, an air outlet pipe 13 and a one-way valve 14, the balloon 10 is limited in an air collecting cavity, the air pump 11 and the gas flowmeter 12 are both limited in an installation cavity and fixed with a partition plate 5, the air outlet end of the air pump 11 is communicated with the balloon 10 through a pipeline, the gas flowmeter 12 is connected in series between the air outlet end and the balloon 10, the gas flowmeter 12 can detect the inflation quantity of the balloon 10, one end of the air outlet pipe 13 is communicated with the air collecting cavity, the other end of the air outlet pipe 13 is arranged outside the top box 4, one end of the air outlet pipe 13 arranged outside the top box 4 can be communicated with an air collecting bag (not shown in the figure), the one-way valve 14 is connected in series on the air outlet pipe 13 and limited in the installation cavity, the one-way valve 14 ensures that the gas inside the top box 4 can only be discharged outwards through the air outlet pipe 13, the external air cannot enter the top box 4 from the air outlet pipe 13, the top box 4 is provided with an air pressure balancing hole 40 communicated with the installation cavity, the purpose of the air pressure equalizing hole 40 is to: when the air pump 11 is used for inflating the balloon 10, the air pump 11 can smoothly intake air, the installation cavity cannot be fully closed, and the air pump 11 can normally work.

More specifically, an annular baffle plate I15 is fixedly welded on the inner wall of the ground box 1, the bottom wall of a groove of an annular groove body 7 is fixedly bonded with the plate surface of the annular baffle plate I15, and the outer groove wall of the annular groove body is fixedly bonded with the inner wall of the ground box 1; and a second annular baffle 16 is fixed on the inner wall of the middle section box 2 by welding, the bottom wall of the other annular groove body 7 is fixed with the plate surface of the second annular baffle 16 by bonding, and the outer groove wall of the other annular groove body is also fixed with the inner wall of the middle section box 2 by bonding.

More specifically, the sealing element also comprises an annular arc-shaped baffle 8, the two end walls at the notch of the annular groove body 7 are respectively and integrally formed with one arc-shaped baffle 8, the two arc-shaped baffles 8 are limited between the arc centers of the two arc-shaped baffles, the two arc-shaped baffles 8 are both limited in the annular groove body 7,

when the first insertion pipe 3 or the second insertion pipe 6 is not inserted into the annular groove body 7, the outer arc surfaces of the two arc-shaped retaining pieces 8 positioned in the same annular groove body 7 can be mutually abutted,

when the first insertion pipe 3 or the second insertion pipe 6 is inserted into the annular groove body 7, the inner wall and the outer wall of the first insertion pipe 3 can be respectively tightly abutted to the outer arc surfaces of the two arc-shaped retaining pieces 8, and the inner wall and the outer wall of the second insertion pipe 6 can be respectively tightly abutted to the outer arc surfaces of the two arc-shaped retaining pieces 8.

Further concretely, the temperature measuring device comprises a temperature measuring component and a storage battery 22, wherein the temperature measuring component comprises a temperature measuring meter 17, an in-box temperature detecting probe 18, an out-box surface temperature detecting probe 19, an out-box soil temperature detecting probe 20 and an out-box air temperature detecting probe 21,

the temperature measuring meter 17 and the storage battery 22 are both arranged in the installation cavity and fixed with the partition plate 5, preferably, the temperature measuring meter 17 in the application is JM624, a display screen of the temperature measuring meter 17 and a display screen of the gas flowmeter 12 are both fixed at one end of the top box 4 far away from the second insertion tube 6, so that an operator can observe the temperature measuring meter 17, the gas pump 11 and the gas flowmeter 12 conveniently, and are all electrically connected with the storage battery 22,

the temperature measuring meter 17 is respectively communicated with an in-box temperature detecting probe 18, an out-box surface temperature detecting probe 19, an out-box soil temperature detecting probe 20 and an out-box air temperature detecting probe 21 through signal wires;

the temperature detecting probe 18 in the box is fixed with the clapboard 5 and limited in the gas collection cavity,

the off-box surface temperature detection probe 19 needs to be arranged on the surface of the ground to be detected outside the ground box 1 when in use,

when in use, the soil temperature detection probe 20 outside the box needs to be inserted into the ground surface to be detected outside the ground box 1,

the out-of-box air temperature detection probe 21 needs to be arranged outside the ground box 1, the middle box 2 and the top box 4 when in use, and the out-of-box air temperature detection probe 21 can be placed at the top of the top box 4 and can also be detachably fixed on an article outside the static box.

More specifically, the gas collection device further comprises a stirring fan 23, wherein the stirring fan 23 is limited in the gas collection cavity and is fixed with the partition plate 5, and the stirring fan 23 is electrically connected with the storage battery 22.

More specifically, the handle 24 is further included, and the handle 24 is fixed to an end of the top case 4 far away from the second insertion tube 6.

Further specificly, still include buckle 25 and fastener 26, buckle 25 and fastener 26 adaptation, can realize buckle 25 and fastener 26's separation through pressing buckle 25, all be fixed with two buckle 25 on the outer wall of top case 4 and middle section case 2, all be fixed with two fasteners 26 on the outer wall of middle section case 2 and ground case 1, can detain to establish to two fasteners 26 fixed with middle section case 2 with top case 4 fixed two buckles 25 joint separately, can detain separately to establish to two fasteners 26 fixed with ground case 1 with middle section case 2 fixed two buckles 25, can detain to establish separately to two fasteners 26 fixed with ground case 1 with middle section case 2 fixed two buckles 25.

Further specifically, still include a plurality of gear shaping 27, gear shaping 27 is fixed with the end wall that middle section case 2 was kept away from to ground case 1, and a plurality of gear shaping 27 evenly arrange along the circumferential direction of ground case 1, and gear shaping 27 is kept away from the one end of ground case 1 and is carried out the edging and handle, and gear shaping 27 can insert establish to waiting to examine the ground in to this improves ground case 1's stability in placing.

The use method of the static box comprises the following steps:

firstly, inserting a ground box 1 into a ground to be detected, then filling sealing liquid 9 into an annular groove body 7 fixed with the ground box 1, after the sealing liquid 9 is filled, fastening a middle section box 2 on the ground box 1, inserting an insertion pipe I3 into the annular groove body 7 fixed with the ground box 1 and immersing the insertion pipe I in the sealing liquid 9, and ensuring that two buckling plates 25 fixed with the middle section box 2 are respectively buckled and buckled on two fasteners 26 fixed with the ground box 1;

secondly, filling sealing liquid 9 into an annular groove body 7 fixed with the middle section box 2, after the sealing liquid 9 is filled, fastening the top box 4 on the middle section box 2, inserting a second insertion pipe 6 into the annular groove body 7 fixed with the middle section box 2 and immersing the second insertion pipe in the sealing liquid 9, and ensuring that two buckle plates 25 fixed with the top box 4 are respectively fastened and fastened on two fasteners 26 fixed with the middle section box 2;

thirdly, arranging a surface temperature detection probe 19 outside the box, a soil temperature detection probe 20 outside the box and an air temperature detection probe 21 outside the box in place respectively;

fourthly, arranging an air outlet pipe 13 at one end outside the top box 4 to be communicated with an injector (not shown in the figure) or a tool (not shown in the figure) capable of extracting air outside the top box, then performing air extraction treatment, extracting the original air in the static box, stopping air extraction after a period of time, and simultaneously opening a temperature measuring meter 17;

after static case stood for a period of time, when its inside gas need be extracted, it is continuous with air-collecting bag and outlet duct 13, open air pump 11 and stirrer fan 23, air pump 11 is aerifyd in to balloon 10, balloon 10 volume increase, static incasement portion volume diminishes, the original gas in static incasement portion can discharge to the gas-collecting bag in through outlet duct 13, and then accomplish gaseous collection, because the increase in volume of balloon 10, therefore, the gas in static incasement portion can only be outside emission, there is not the condition that outside air got into static incasement portion.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. A static case is used in soil gas collection, its characterized in that includes:

the ground box (1), both ends of the ground box (1) are open, and one end of the ground box (1) can be buckled on the ground to be detected in a sealing manner;

the device comprises a middle-section box (2), wherein one end of the middle-section box (2) is opened, the other end of the middle-section box (2) is closed, the closed end of the middle-section box (2) can be tightly abutted against one end, away from the ground to be detected, of a ground box (1), and the closed end of the middle-section box (2) is provided with a hole and is fixedly provided with a first insertion pipe (3) communicated with the inside of the middle-section box;

the top box (4), both ends of the top box (4) are closed, a partition plate (5) is fixed in the top box (4), the top box (4) is divided into an installation cavity and a gas collection cavity by the partition plate (5), one closed end of the top box (4) is provided with a hole and is fixed with a second insertion tube (6) communicated with the gas collection cavity, and one end of the top box (4) fixed with the second insertion tube (6) can be tightly abutted against the open end of the middle box (2);

the sealing element comprises an annular groove body (7) with a door-shaped cross section, sealing liquid (9) is filled in the annular groove body (7), the annular groove body (7) is provided with two parts which are respectively fixed with the inner wall of the ground box (1) and the inner wall of the middle box (2), the first insertion pipe (3) can be inserted into the annular groove body (7) fixed with the ground box (1) and immersed in the sealing liquid (9), and the second insertion pipe (6) can be inserted into the annular groove body (7) fixed with the middle box (2) and immersed in the sealing liquid (9);

air exhaust assembly, air exhaust assembly includes balloon (10), air pump (11), gas flowmeter (12), outlet duct (13) and check valve (14), balloon (10) are spacing in the gas collecting cavity, air pump (11) and gas flowmeter (12) are all installed in the installation cavity, the end of giving vent to anger of air pump (11) just has concatenated gas flowmeter (12) between the two through the pipeline intercommunication with balloon (10), outlet duct (13) one end and gas collecting cavity intercommunication, the other end is arranged outside top case (4), check valve (14) concatenate on outlet duct (13) and it is spacing in the installation cavity, set up atmospheric pressure balance hole (40) with the installation cavity intercommunication on top case (4).

2. The static case for soil gas collection of claim 1, wherein: a first annular baffle (15) is fixed on the inner wall of the ground box (1), and the bottom wall of an annular groove body (7) is fixed with the plate surface of the first annular baffle (15); and a second annular baffle (16) is fixed on the inner wall of the middle section box (2), and the bottom wall of the other annular groove body (7) is fixed with the plate surface of the second annular baffle (16).

3. The static case for soil gas collection of claim 1, wherein: the sealing member still includes annular arc separation blade (8), be fixed with one arc separation blade (8) on the both ends wall of the notch department of annular groove body (7) separately, two arc separation blade (8) are spacing between the arc heart of the two, two arc separation blade (8) are all spacing in annular groove body (7), the interior outer wall of intubate one (3) can be separately with the inseparable butt of extrados of two arc separation blade (8), the interior outer wall of intubate two (6) can be separately with the inseparable butt of extrados of two arc separation blade (8).

4. The static case for soil gas collection according to claim 1, wherein: the temperature measurement device is characterized by further comprising a temperature measurement assembly and a storage battery (22), wherein the temperature measurement assembly comprises a temperature measurement meter (17), an in-box temperature detection probe (18), an out-box temperature detection probe (19), an out-box soil temperature detection probe (20) and an out-box air temperature detection probe (21), the temperature measurement meter (17) and the storage battery (22) are both installed in the installation cavity, a display screen of the temperature measurement meter (17) and a display screen of the gas flowmeter (12) are both fixed at one end, far away from the second insertion pipe (6), of the top box (4), the temperature measurement meter (17), the gas pump (11) and the gas flowmeter (12) are both electrically connected with the storage battery (22), and the temperature measurement meter (17) is in signal communication with the in-box temperature detection probe (18), the out-box temperature detection probe (19), the out-box soil temperature detection probe (20) and the out-box air temperature detection probe (21) respectively; the in-box temperature detection probe (18) is fixed with the partition plate (5) and is limited in the gas collection cavity, the out-box surface temperature detection probe (19) can be arranged on the ground surface to be detected outside the ground box (1), the out-box soil temperature detection probe (20) can be inserted into the ground surface to be detected outside the ground box (1), and the out-box air temperature detection probe (21) can be arranged outside the ground box (1), the middle section box (2) and the top box (4).

5. The static case for soil gas collection according to claim 4, wherein: the gas collection device is characterized by further comprising a stirring fan (23), wherein the stirring fan (23) is limited in the gas collection cavity and is fixed with the partition plate (5), and the stirring fan (23) is electrically connected with the storage battery (22).

6. The static case for soil gas collection of claim 1, wherein: the handle (24) is fixed with one end of the top box (4) far away from the second insertion tube (6).

7. The static case for soil gas collection of claim 1, wherein: still include buckle (25) and fastener (26), buckle (25) and fastener (26) adaptation, all be fixed with a plurality of buckle (25) on the outer wall of top case (4) and middle section case (2), all be fixed with a plurality of fasteners (26) on the outer wall of middle section case (2) and ground case (1), can joint knot separately with a plurality of buckle (25) of top case (4) fixed establish to with middle section case (2) on a plurality of fasteners (26) fixed, can joint knot separately with a plurality of buckle (25) of middle section case (2) fixed establish to with ground case (1) on a plurality of fasteners (26) fixed.

8. The static case for soil gas collection of claim 1, wherein: still including gear shaping (27), gear shaping (27) are kept away from the end wall of middle section case (2) with ground case (1) and are fixed, and gear shaping (27) can be inserted and establish to waiting to examine in the ground.

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