Search

CN-122016414-A - Portable ground gas separation entrapment device

CN122016414ACN 122016414 ACN122016414 ACN 122016414ACN-122016414-A

Abstract

The invention relates to the technical field of ground gas collection and separation, and discloses a portable ground gas separation and collection device which comprises a hammering pile provided with a cavity, wherein a sampling pipe is inserted into the hammering pile, the hammering pile sequentially comprises an upper pile body, a sampling pile and a lower pile body from top to bottom, the upper end of the sampling pile is in sliding connection with the lower end of the upper pile body along the vertical direction, the bottom end of the sampling pile is in plug-in fit with the lower pile body, the upper pile body is fixedly connected with the lower pile body through a connecting rod, lifting equipment is arranged at the top end of the upper pile body and used for adjusting the height of the sampling pipe, and a separation layer is fixed on the lower side wall of the sampling pipe. According to the invention, the operation of drilling with a steel drill and connecting with a sampler is not needed, the hammering pile can be directly hammered into the soil layer to complete layout, the steel drill pulling step is omitted, the hole collapse problem during steel drill pulling and the condition that the atmosphere is mixed into holes are effectively avoided, the collected ground gas is not interfered by external air, and the accuracy and the reliability of a sampling result are obviously improved.

Inventors

  • WANG FENGJIAO
  • HAN WEI
  • ZHANG LIFANG
  • TIAN HAIXIA
  • Qu Eryue
  • Liu Duojian
  • Xu Mijuan
  • SHI JIA
  • JIA YU

Assignees

  • 中国石油集团石油职业卫生技术服务中心

Dates

Publication Date
20260512
Application Date
20260205

Claims (10)

  1. 1. A portable ground gas separation capturing device comprises a hammering pile (1) provided with a cavity and is characterized in that a sampling tube (2) is inserted into the hammering pile (1), the hammering pile (1) sequentially comprises an upper pile body (101), a sampling pile (102) and a lower pile body (103) from top to bottom, the upper end of the sampling pile (102) is in sliding connection with the lower end of the upper pile body (101) along the vertical direction, the bottom end of the sampling pile (102) is in insertion connection with the lower pile body (103), the upper pile body (101) is fixedly connected with the lower pile body (103) through a connecting rod, lifting equipment is arranged at the top end of the upper pile body (101) and used for adjusting the height of the sampling tube (2), a separation layer (3) is fixed on the lower side wall of the sampling tube (2), the separation layer (3) is fixedly connected with the sampling pile (102), and a filtering hole (105) is formed in the lower side wall of the sampling pile (102).
  2. 2. The portable ground gas separation and collection device according to claim 1, wherein the sampling tube (2) comprises a tube body (201), an air inlet tube (202) and a telescopic air outlet tube (203) are fixedly arranged in the tube body (201) in a penetrating mode, a cavity (106) is formed in the lower pile body (103), a flow hole is formed in the side wall of the cavity (106), and an opening fixedly connected with the bottom end of the air outlet tube (203) is formed in the top end of the cavity (106).
  3. 3. The portable ground gas separation and collection device according to claim 2, wherein a first sealing ring (107) is slidably arranged on the outer side wall of the cavity (106), an elastic piece (108) is fixedly arranged at the bottom end of the first sealing ring (107) and the inner bottom wall of the lower pile body (103), and an extension ring is fixedly arranged at the top end of the first sealing ring (107).
  4. 4. The portable ground gas separation and collection device according to claim 2, wherein a separation cylinder (110) is fixedly arranged on the inner top wall of the cavity (106), a first check valve (111) is arranged at the bottom end opening of the separation cylinder (110), a liquid inlet channel communicated with the lower pile body (103) is formed between the separation cylinder (110), a filter plate (112) is fixedly arranged in the liquid inlet channel, a liquid suction pipe (113) is fixedly arranged at the bottom end of the opening, and a second sealing ring (114) is fixedly connected with the outer wall of the valve plate of the first check valve (111) through a rod piece.
  5. 5. The portable geothermal separating and capturing device according to claim 4, wherein a liquid level sensor (115) fixedly connected with the inner top wall of the cavity (106) is arranged in the partition tube (110), and a liquid draining device is arranged on the liquid extracting tube (113).
  6. 6. The portable earth-gas separation trapping device of claim 5, wherein the liquid draining equipment comprises an electric pushing cylinder (116) fixedly arranged in the lower pile body (103), the electric pushing cylinder (116) is positioned below the liquid suction pipe (113) and fixedly provided with a sealing plug (117) at the driving end, a one-way valve II (118) is fixedly arranged in the liquid suction pipe (113), an air ventilation cavity (119) is formed in the outer concave portion of the upper side wall of the liquid suction pipe (113), a sealing block (120) is arranged in the air ventilation cavity (119), and an elastic telescopic rod (121) is fixedly arranged between the sealing block (120) and the air ventilation cavity (119).
  7. 7. The portable earth-gas separation and collection device of claim 2, wherein the sampling pile (102) comprises an upper layer (1021), a sampling layer (1022) and a lower layer (1023) which are sequentially connected in a rotating mode, blades (1024) are fixedly arranged on the inner side wall of the sampling layer (1022), a guide pipe (109) is fixedly arranged at the top end of the cavity (106), and a guide end is arranged on the side wall of the guide pipe (109) facing the sampling layer (1022).
  8. 8. The portable earth-gas separation and collection device according to claim 4, wherein the bottom end of the upper pile body (101) is fixedly connected with a blocking ring (122) through a connecting rod penetrating through the lower pile body (103), and the blocking ring (122) is sleeved outside the lower pile body (103).
  9. 9. The portable ground-gas separation and collection device according to claim 1, wherein the upper pile body (101) comprises an outer cylinder (1011) and an inner cylinder (1012) which are connected in a sliding mode, a sealing cover (1018) is arranged on the outer side of the outer cylinder (1011) in a sliding mode, an installation cavity is formed in the sealing cover (1018), a limiting rod (1014) is inserted into the installation cavity, and a plurality of through holes (1015) are formed in the side wall of the outer cylinder (1011) from top to bottom.
  10. 10. The portable ground-gas separation and collection device according to claim 9, wherein the upper side wall of the inner barrel (1012) is provided with a limiting hole (1016) corresponding to the limiting rod (1014), and an elastic piece II (1017) is sleeved on the outer side of the limiting rod (1014).

Description

Portable ground gas separation entrapment device Technical Field The invention relates to the technical field of ground gas collection and separation, in particular to a portable ground gas separation and collection device. Background The main mechanism of the geogas measurement method is that when the earth crust upward gas flow moves vertically through the ore-bearing geologic body, the active (submicron to nanometer) part of the ultra-fine particles of the ore-forming element or the accompanying element is brought to the surface, one part of the ultra-fine particles remains in the gas, the other part of the ultra-fine particles are converted into various active states and exist in the surface loose medium, and the object of the geogas measurement is to capture and measure the part of substances in the surface soil gas, which can reflect the deep ore-bearing information. The prior method for detecting the earth gas in the soil comprises the steps of firstly punching a detection hole in the soil by using a special steel drill for a test point, then pulling out the steel drill to put a special sampler into the detection hole, and pumping air by using a sampling pump, wherein the whole sampling process can generate the problems that firstly, the steel drill is difficult to pull out because no force point is used in the pulling-out process of the steel drill, particularly in a denser soil layer, secondly, the steel drill is easy to cause hole collapse in the pulling-out process if surface soil is loose, so that the sampling work cannot be continuously carried out, thirdly, the steel drill is difficult to mix with the air into a formed hole after being pulled out, so that the air inlet hole at the bottom of the sampler is easy to be blocked or blocked by soil particles during the insertion, and the surrounding loose soil particles are adsorbed to be blocked when the air pumping of the sampling pump generates negative pressure, so that the air cannot normally enter the collection system, and the problem of high quality or the soil content is particularly high due to the fact that the air cannot be normally absorbed into the collection system, and the air is difficult to be forced to be broken. Disclosure of Invention In order to overcome the defects in the prior art and solve the technical problems, the invention provides a portable ground gas separation and collection device. The portable ground gas separation and collection device comprises a hammering pile with a cavity, wherein a sampling pipe is inserted into the hammering pile, the hammering pile sequentially comprises an upper pile body, a sampling pile and a lower pile body from top to bottom, the upper end of the sampling pile is in sliding connection with the lower end of the upper pile body along the vertical direction, the bottom end of the sampling pile is in plug-in fit with the lower pile body, the upper pile body is fixedly connected with the lower pile body through a connecting rod, lifting equipment is arranged at the top end of the upper pile body and used for adjusting the height of the sampling pipe, a separation layer is fixed on the lower side wall of the sampling pipe, the separation layer is fixedly connected with the sampling pile, and a filtering hole is formed in the lower side wall of the sampling pile. By adopting the scheme, the hammering piles can be directly hammered into the soil layer to finish layout without additional operation of drilling by virtue of the steel drills and connecting the sampler, so that the steel drills are omitted from being pulled out, the difficult problem of pulling out caused by no acting points when the steel drills are pulled out is avoided, the conditions of loose soil holes collapse on the surface layer, mixing of the atmosphere into holes and the like are effectively prevented, the collected ground gas is ensured not to be interfered by external air, and the accuracy and the reliability of a sampling result are obviously improved. Preferably, the sampling tube comprises a tube body, an air inlet pipe and a telescopic air outlet pipe are fixedly penetrated in the tube body, a cavity is formed in the lower pile body, a flow hole is formed in the side wall of the cavity, and an opening fixedly connected with the bottom end of the air outlet pipe is formed in the top end of the cavity. Preferably, the outer side wall of the cavity is slidably provided with a first sealing ring, the bottom end of the first sealing ring and the inner bottom wall of the lower pile body are fixedly provided with a first elastic piece, and the top end of the first sealing ring is fixedly provided with an extension ring. Preferably, the inner top wall of the cavity is fixedly provided with a separation cylinder, the bottom end of the separation cylinder is provided with a first check valve, a liquid inlet channel communicated with the lower pile body is formed between the separation cylinder and the lower pile body, a filte