JP2006030113A - Apparatus for sampling matter inside soil of oil service station - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem in conventional methods, wherein since a matter sampling apparatus uses electrical equipment, in order to sample and investigate gas or the like in soils inside a fire-ban area of an oil service station, it is necessary to isolate the apparatus from the fire-ban area by installing a temporary fire protection wall therearound or surrounding the apparatus by a fire-proofed sheet in a simple manner, and the installation of the temporary fire protection wall or the simple fire-proofed sheet has been troublesome and required time. <P>SOLUTION: The apparatus for sampling a matter in the soils of the oil service station comprises a sampling tube whose top is inserted into a sampling hole for sampling the matter in the soils of the oil service station; a flexible collection bag which is airtightly connected to the base section of the sampling tube; a decompression box into which the collection bag is inserted; and an non-electric decompression pump which is in communication with the decompression box. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an apparatus for collecting substances such as soil gas and ground water in a fuel handling station soil used in a fire-prohibited area such as a fuel handling station.

Conventionally, an apparatus that collects soil gas in a gas collection space that has been perforated and sealed in soil by natural diffusion and samples it with a syringe-type suction device that is detachably connected through a conduit is described in, for example, Patent Document 1 As known.
JP 2001-221724 (FIG. 1).

  However, the above-described conventional sampling apparatus is not only troublesome and time consuming, but also difficult to perform completely and has a problem in safety.

  In addition, with conventional material collection equipment that uses electrical equipment, the four sides of the equipment are temporarily fireproofed or simply prevented from being used for collecting and investigating the gas in the soil in a fire-use-prohibited area at the refueling station. Although it was necessary to enclose with a flame sheet and isolate it from the fire-prohibited area, there was a drawback that it took time and effort to install a temporary fire retardant or a simple flame proof sheet.

  The present invention eliminates the above-mentioned drawbacks.

  The material collecting device in the soil of the oil handling station of the present invention comprises a sampling tube having its tip inserted into a sampling hole for collecting the material in the oil handling site soil, and a flexible trap connected in an airtight manner to the base of the sampling tube. It is characterized by comprising a collection bag, a decompression box into which the collection bag is inserted, and a non-electric decompression pump communicated with the decompression box.

  The material collection device in the soil of the refueling station according to the present invention has a great advantage that gas can be collected very safely and easily and there is no risk of fire because no electric equipment is used.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows an apparatus for collecting substances such as soil gas and groundwater in the soil of the present invention, 1 for a sampling hole having a depth of 0.8 to 1 m, and 2 for preventing collapse of the sampling hole inserted in the sampling hole 1. The protective tube 3 is a rubber plug in which the head of the protective tube 2 is tightly sealed, 4 is a sampling tube inserted into the protective tube 2 through the rubber plug 3 at its tip, and 5 is the sampling tube 4 A collection bag for soil gas or the like made of a flexible synthetic resin film that is airtightly connected to the base of the above, 6 is a decompression box in which the collection bag 5 is inserted, and 7 is a non-electric manual decompression connected to the decompression box It is a pump.

  As shown in FIG. 2, for example, as shown in FIG. 2, a non-electric manual decompression pump 7 in the material collection device in the oil handling station soil of the present invention has a cylindrical piston cylinder 9 whose upper and lower ends are closed by lids 8a and 8b, and this piston. A piston 10 provided in the cylinder 9 so as to be movable up and down, a piston rod 11 connected to the piston 10 through the lid 8a and moved up and down, a handle 12 provided on the piston rod 11, and the piston 10 The upper chamber 13 and the lower chamber 14 of the partitioned piston cylinder 9 and the check valve 15 provided in the upper part of the upper chamber 13 and capable of discharging the air in the upper chamber 13 only to the outside and the upper chamber 13 A check valve 16 capable of sucking outside air only indoors, a check valve 17 provided below the lower chamber 14 and capable of discharging air inside the lower chamber 14 only outside and the lower 14 a check valve 18 capable of sucking outside air only indoors, and a conduit 19 having one end connected to the check valves 16 and 18 in an airtight manner and the other end connected to the decompression box 6 in an airtight manner. Become.

  Since the substance collection device in the oil handling station soil of the present invention is configured as described above, if the piston 10 is moved downward by pushing down the handle portion 12 of the manual decompression pump 7 manually, The check valve 15 in the upper chamber 13 is closed, the check valve 16 is opened, and the air in the decompression box 6 is sucked into the upper chamber 13 through the check valve 16. Further, the check valve 17 in the lower chamber 14 is opened, the check valve 18 is closed, and the air in the lower chamber 14 is discharged to the outside through the check valve 17. As a result, the inside of the decompression box 6 is decompressed.

  Further, when the handle portion 12 of the manual decompression pump 7 is pushed up by hand to move the piston 10 upward, the check valve 15 in the upper chamber 13 is opened, and the check valve 16 is closed. The air in the upper chamber 13 can be discharged to the outside via the check valve 15, and at this time, the check valve 17 in the lower chamber 14 is closed, the check valve 18 is opened, and the reverse valve is opened. The air in the decompression box 6 can be sucked into the lower chamber 14 through the stop valve 18 and the inside of the decompression box 6 can be decompressed.

  When the decompression box 6 is decompressed, the flexible collection bag 5 inserted into the decompression box 6 expands and the inside thereof becomes negative pressure. From the tip of the collection tube 4 connected to the collection bag 5, the flexible collection bag 5 Soil gas or the like in the collection hole 1 is sucked, and the soil gas or the like is collected in the collection bag 5.

  The collection bag 5 collecting the soil gas and the like is taken out by opening the lid of the decompression box 6.

  As described above, according to the material collection device in the soil of the oil handling station of the present invention, the gas is inhaled by utilizing the expansion and contraction of the flexible collection bag, so that it is extremely simple and safe, and the electric equipment is not used. First, the soil gas can be collected in the collection bag 5 by moving the handle portion 12 of the manual decompression pump 7 up and down by hand.

It is explanatory drawing of the substance extraction apparatus in the oil supply handling place soil of this invention. It is a vertical side view of the manual decompression pump of the substance extraction device in the oil supply station soil of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sampling hole 2 Protective tube 3 Rubber stopper 4 Sampling tube 5 Collection bag 6 Decompression box 7 Manual decompression pump 8a Lid 8b Lid 9 Piston cylinder 10 Piston 11 Piston rod 12 Handle part 13 Upper chamber 14 Lower chamber 15 Check valve 16 Reverse Check valve 17 Check valve 18 Check valve 19 Conduit

Claims (1)

  A sampling tube with its tip inserted into a sampling hole for collecting substances in the soil of the oil handling station, a flexible collection bag that is airtightly connected to the base of this collection tube, and a decompression box with this collection bag inserted An apparatus for collecting substances in soil of a fueling station, comprising a non-electric decompression pump communicating with the decompression box.

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