CN218599478U - Sampling box and sampling device for gas reservoir exploration - Google Patents

Abstract

The utility model relates to a sampling equipment technical field, concretely relates to gas reservoir exploration is with sampling box and sampling device. Sampling device for gas exploration includes sampling assembly and installs the sampling box on sampling assembly, the sampling box includes the sampling barrel, sliding seal cooperation has the piston in the sampling barrel, the one end fixedly connected with piston rod of piston, the one end longitudinal extension of piston rod stretches out the sampling barrel and with the sampling barrel sliding seal cooperation, and be fixed with the handle that pushes away at the end that stretches out, the sampling barrel is equipped with the screw hole dorsad its one end with piston rod complex, spiral installation has the promotion lead screw in the screw hole, the one end that promotes the lead screw stretches into the sampling barrel and fixedly connected with promotes the piece, the other end stretches out the sampling barrel, when sample gas is sealed in the sealed sample chamber that piston and sampling barrel formed, it can drive the piece that promotes and support tightly on the terminal surface of piston orientation promotion piece to promote the lead screw, thereby avoid pushing away the handle and cause the piston to move and arouse the sample to leak when receiving mistake to bump or collide.

Description

Sampling box and sampling device for gas reservoir exploration

Technical Field

The utility model relates to a sampling equipment technical field, concretely relates to gas reservoir exploration is with sampling box and sampling device.

Background

The gas reservoir is a natural gas gathering unit with the same independent pressure system and a uniform gas-water interface in a single trap and is the most basic natural gas gathering unit in the earth's crust. In gas reservoir exploration, it is generally necessary to perform sampling analysis on the purity and the like of the gas reservoir by using a sampling device.

The sampling device comprises a sampling box for sampling, wherein the side surface of the sampling box is provided with an air inlet, and sample gas is injected into the sampling box through the air inlet. The piston is matched with the inner cavity of the sampling box in a sliding sealing mode, one end of the piston is fixedly connected with a push rod, the push rod extends along the length direction of the sampling box and extends out of the sampling box, the push rod is connected with a push handle at the extending end, and after sample gas is injected into the inner cavity of the sampling box, the push handle is moved to further drive the piston to seal the sample gas in a sampling cavity formed by the piston and the sampling box, so that sampling is completed.

However, after the sampling box of the sampling device in the prior art finishes sampling, the push handle is in a push-out state, and once the sampling box is collided and pushed by mistake, the piston can be directly driven to move, so that the sampling cavity is communicated with the air inlet, and sample gas can leak through the air inlet to cause sampling failure.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sampling box is used in gas reservoir exploration to solve the sampling box among the prior art the technical problem that the sample leaked easily after the sample was ended, the utility model discloses still lie in providing a sampling device is used in gas reservoir exploration to solve the technical problem that the sample leaked easily after the sample was ended to the sampling device among the prior art.

In order to achieve the above object, the utility model discloses a sampling box for gas reservoir exploration's technical scheme is: including the sampler barrel, offer the air inlet that is used for with the gas production pipe intercommunication on the lateral wall of sampler barrel, install in the sampler barrel rather than inner chamber sliding seal complex piston, the one end fixedly connected with piston rod of piston, the sampler barrel is provided with the piston rod and dodges the hole on the terminal surface of the one end that the piston is connected with the piston rod, the one end of piston rod is vertically extended to extend the piston rod and is dodged the hole and dodge hole sliding seal with the piston rod, the piston rod can drive the piston forward and move and cross the air inlet in order to form the sample chamber that is used for sealed sample gas in the sampler barrel, the sampler barrel is located and is equipped with the second air outlet valve on the outer terminal surface of sample chamber one side, the second air outlet valve is used for controlling the inner chamber of sampler barrel and the atmospheric break-make in the external world, still be provided with the limit structure who is used for limiting piston reverse movement after the sample finishes on the sampler barrel.

Has the advantages that: through the design, before sampling, the second gas outlet valve is opened, the piston rod is moved, the piston is further driven to move to the end face provided with the second gas outlet valve, gas in the inner cavity of the sampling cylinder can be discharged, the phenomenon that the purity of the sampled gas is influenced by the internal gas and further the test result is influenced is avoided, the second gas outlet valve is closed after the gas is exhausted, the piston rod is moved to drive the piston to move in the reverse direction until the piston passes through the gas inlet, at the moment, a negative pressure cavity is formed in the inner cavity of the sampling cylinder, and after the sampling box is communicated with the gas sampling pipe, the sample gas can be directly injected into the sampling cylinder through the gas inlet, so that sampling is facilitated; after sample gas is injected into the sampling box, the piston rod drives the piston to cross the gas inlet so as to seal the sample gas in a sealed sampling cavity formed by the piston and the sampling cylinder, sampling is completed, after sampling is finished, the movement of the piston can be limited by the limiting structure, even if the push rod is touched or collided by mistake from the outside, the push rod cannot drive the piston to move reversely under the action of the limiting structure so as to expose the gas inlet in the sampling cavity, and the sample is leaked from the gas inlet; to sum up, the utility model discloses a sampling box for gas reservoir exploration has solved the easy technical problem who leaks of sample after the sample is ended that sampling box among the prior art exists.

Furthermore, a top stop piece is arranged on the sampling cylinder, the top stop piece is positioned on one side of the piston back to the sampling cavity and used for tightly pushing the piston to limit the reverse movement of the piston after the piston seals the sample gas in the sampling cavity, and the top stop piece forms the limiting structure.

Has the advantages that: with stop gear design for the top stopping piece, after sample gas seal in the sample chamber, the top stopping piece directly pushes up tightly can make the tight effect in top more reliable on the piston, ensures that the push rod receives great impact piston also can not remove.

Further, piston rod fixed connection is in the one end of piston towards the sample chamber, and the piston rod dodges the hole sliding seal cooperation with the piston rod, and the piston rod is arranged with the top piece is coaxial.

Has the beneficial effects that: through above-mentioned design, on the one hand the piston rod is when receiving the collision, and the effort can directly transmit to the lead screw, and can not produce the moment that arouses the bending on the piston, and the piston atress is balanced, further protects the piston, can avoid the piston rod to take place bending deformation after the atress simultaneously and cause the device to use the trouble, and on the other hand the piston rod rather than dodging the gas tightness that the hole sliding seal cooperation can guarantee the sample chamber.

Furtherly, the sampling barrel dodges the one end in hole to the piston rod dorsad and offers threaded hole, and spiral mounting has the promotion lead screw in the threaded hole, and the one end that promotes the lead screw stretches into the sampling barrel and can the butt drive the piston on the terminal surface of piston dorsad piston rod and cross the air inlet and restrict the reverse motion of piston, and the other end that promotes the lead screw stretches out the sampling barrel and for revolving wrong end, promotes the lead screw and constitutes the top stops the piece.

Has the advantages that: through the design, with the design of top piece for promoting the lead screw, promote lead screw itself on the one hand and have self-locking function, can keep the piston position after the sample ends well, avoid the push rod to cause the piston to remove when receiving the collision, and simultaneously, promote the lead screw and have even feed when feeding, at the in-process that promotes the piston and remove, the piston can not receive abrupt impact, form the protection to the piston, furthermore, utilize to twist to hold and be convenient for twist the lead screw, the operation is simple and labor-saving, on the other hand, utilize the cooperation that promotes lead screw and screw hole, through the rotatory mode that advances, can promote the piston more easily and cross the air inlet and then seal the sample gas to the sample chamber, it is more convenient to operate.

Furthermore, one end of the pushing screw rod, which faces the piston, is fixedly connected with a pushing block, one end of the pushing screw rod, which faces away from the piston, is fixedly connected with a knob, and the knob forms the screwing end.

Has the beneficial effects that: through the design, the contact area between the push screw rod and the piston can be increased by utilizing the push block, the pressure of the push screw rod acting on the piston is reduced, the push screw rod is prevented from damaging the end face of the piston in the rotary advancing process, the knob is utilized as the screwing end, the structure is simple, and the operation is convenient

Further, the gas inlet is arranged near one end of the sampling tube and back to the sampling cavity.

Has the advantages that: through the design, on the one hand, the volume of the sampling cavity can be increased, meanwhile, the difficulty in moving the piston due to the fact that the internal pressure of the sampling cavity is too large due to the fact that the volume of compressed sample gas in the moving process of the piston can be avoided, on the other hand, the length of the piston rod extending out of the sampling cylinder after sampling can be reduced, the possibility that the piston rod is collided is reduced, sample gas leakage is further avoided, meanwhile, the overall length of the push screw rod can be reduced, and the overall structure is more compact.

Furthermore, the sampling tube is a square tube, and the piston is a square piston matched with the inner cavity of the sampling tube.

Has the advantages that: through the design, the air tightness of the piston and the inner cavity of the sampling cylinder can be reduced, so that the piston can be conveniently moved in the inner cavity of the sampling box under the condition that the test result cannot be influenced, and the difficulty in moving the piston caused by overlarge negative pressure in the sampling cavity in the moving process of the piston is avoided.

Furthermore, the sampling barrel is provided with the piston rod and dodges the one end in hole and install the second outlet duct that switches on with the sampling barrel inner chamber, the second air outlet valve is installed on the second outlet duct, installs first outlet duct in the one side of sampling barrel dorsad second outlet duct, installs the first air outlet valve that is used for controlling the break-make on the first outlet duct, and first outlet duct switches on with the inner chamber of sampling barrel and is used for the inside atmospheric pressure of balanced sampling barrel at the piston removal in-process.

Has the advantages that: through the design, before the sample, open first outlet valve and second outlet valve, the piston rod drives the piston and removes to accomplish first exhaust to the second outlet duct, close the second outlet valve, the push rod promotes the piston and removes to accomplish the secondary exhaust to first outlet duct, with this impurity gas in the sample barrel inner chamber of discharging before the sample, improve the purity of sample gas after the sample is ended, ensure follow-up test precision, and can form the negative pressure in the inner chamber of sample barrel after the exhaust, make the gas in the gas production pipe can directly pour into the sample barrel inner chamber into, convenient operation, and simultaneously, after sample gas pours into to the sample chamber into, open first outlet valve, make first outlet duct and sample intracavity chamber switch on, later in the in-process of removing the piston with sample gas seal in the sample chamber, first outlet duct switches on with the atmosphere all the time, can balance the inside atmospheric pressure of sample barrel, avoid one side of sample barrel dorsad to the sample chamber to cause the negative pressure to cause the piston to move the difficulty.

Furthermore, one end of the piston rod, which penetrates through the piston rod avoidance hole, is fixedly connected with a push handle.

Has the beneficial effects that: the push handle is utilized to drive the piston rod to move, so that the operation is convenient and the structure is simple.

In order to achieve the above object, the utility model discloses a sampling device for gas reservoir exploration's technical scheme is: including installing the sampling subassembly on the gas production pipe and installing the sampling box on the sampling subassembly, the sampling subassembly includes the sampler barrel, offer on the lateral wall of sampler barrel be used for with the air inlet of gas production pipe intercommunication, install in the sampler barrel rather than inner chamber sliding seal complex piston, the one end fixedly connected with piston rod of piston, the sampler barrel is provided with the piston rod on the terminal surface of the one end that the piston is connected with the piston rod and dodges the hole, the one end longitudinal extension of piston rod is passed the piston rod and is dodged the hole and dodge hole sliding seal with the piston rod, the piston rod can drive the piston forward and remove and cross the air inlet in order to form the sample chamber that is used for sealed sample gas in the sampler barrel, the sampler barrel is located and is equipped with the second air outlet valve on the outer terminal surface of sample chamber one side, the second air outlet valve is used for controlling the inner chamber and the external atmospheric break-make-and-break that still is provided with on the sampler barrel and is used for limiting structure who restricts piston reverse movement after the sample finishes.

Has the advantages that: through the design, before sampling, the second gas outlet valve is opened, the piston rod is moved, the piston is further driven to move to the end face provided with the second gas outlet valve, gas in the inner cavity of the sampling cylinder can be discharged, the phenomenon that the purity of the sampled gas is influenced by the internal gas and further the test result is influenced is avoided, the second gas outlet valve is closed after the gas is exhausted, the piston rod is moved to drive the piston to move in the reverse direction until the piston passes through the gas inlet, at the moment, a negative pressure cavity is formed in the inner cavity of the sampling cylinder, and after the sampling box is communicated with the gas sampling pipe, the sample gas can be directly injected into the sampling cylinder through the gas inlet, so that sampling is facilitated; after sample gas is injected into a sampling box of the sampling device, the piston rod drives the piston to cross the gas inlet so as to seal the sample gas in a sealed sampling cavity formed by the piston and the sampling cylinder, sampling is finished, after sampling is finished, the movement of the piston can be limited by the limiting structure, even if the push rod is touched or collided by mistake from the outside, the push rod cannot drive the piston to move reversely under the action of the limiting structure, so that the sampling cavity is exposed out of the gas inlet, and the sample is leaked from the gas inlet; to sum up, the utility model discloses a sampling device for gas reservoir exploration has solved the technical problem that the sample leaked easily after the sample that sampling device among the prior art exists.

Furthermore, a top stop piece is arranged on the sampling cylinder, the top stop piece is positioned on one side of the piston, which is back to the sampling cavity, and is used for tightly pushing the piston to limit the reverse movement of the piston after the piston seals the sample gas in the sampling cavity, and the top stop piece forms the limiting structure.

Has the advantages that: with stop gear design for the top piece, after sample gas seal in the sample chamber, the top piece directly pushes up tightly can make the tight effect in top more reliable on the piston, ensures that the push rod receives great impact piston also can not remove.

Further, piston rod fixed connection is in the one end of piston towards the sample chamber, and the piston rod dodges the hole sliding seal cooperation with the piston rod, and the piston rod is arranged with the top piece is coaxial.

Has the advantages that: through above-mentioned design, on the one hand the piston rod is when receiving the collision, and the effort can directly transmit to the lead screw, and can not produce the moment that arouses the bending on the piston, and the piston atress is balanced, further protects the piston, can avoid the piston rod to take place bending deformation after the atress simultaneously and cause device service failure, and on the other hand the piston rod rather than dodging the hole sliding seal cooperation and can guarantee the gas tightness in sample chamber.

Furthermore, threaded hole is seted up to the one end in sampler barrel piston rod dodge hole dorsad, and spiral mounting has the promotion lead screw in the threaded hole, and the one end that promotes the lead screw stretches into the sampler barrel and can the butt drive the piston cross the air inlet and restrict the reverse motion of piston on the terminal surface of piston rod dorsad, and the other end that promotes the lead screw stretches out the sampler barrel and for revolving twist the end, promotes the lead screw constitution top stop.

Has the beneficial effects that: through the design, with the design of top piece for promoting the lead screw, promote lead screw itself on the one hand and have self-locking function, can keep the piston position after the sample ends well, avoid the push rod to cause the piston to remove when receiving the collision, and simultaneously, promote the lead screw and have even feed when feeding, at the in-process that promotes the piston and remove, the piston can not receive abrupt impact, form the protection to the piston, furthermore, utilize to twist to hold and be convenient for twist the lead screw, the operation is simple and labor-saving, on the other hand, utilize the cooperation that promotes lead screw and screw hole, through the rotatory mode that advances, can promote the piston more easily and cross the air inlet and then seal the sample gas to the sample chamber, it is more convenient to operate.

Furthermore, one end of the pushing screw rod, which faces towards the piston, is fixedly connected with a pushing block, one end of the pushing screw rod, which faces away from the piston, is fixedly connected with a knob, and the knob forms the screwing end.

Has the advantages that: through the design, the contact area between the push screw rod and the piston can be increased by utilizing the push block, the pressure of the push screw rod acting on the piston is reduced, the push screw rod is prevented from damaging the end face of the piston in the rotary advancing process, the knob is utilized as the screwing end, the structure is simple, and the operation is convenient

Further, the gas inlet is arranged near one end of the sampling tube and facing away from the sampling cavity.

Has the advantages that: through the design, on the one hand, the volume of the sampling cavity can be increased, meanwhile, the difficulty in moving the piston due to the fact that the internal pressure of the sampling cavity is too large due to the fact that the volume of compressed sample gas in the moving process of the piston can be avoided, on the other hand, the length of the piston rod extending out of the sampling cylinder after sampling can be reduced, the possibility that the piston rod is collided is reduced, sample gas leakage is further avoided, meanwhile, the overall length of the push screw rod can be reduced, and the overall structure is more compact.

Furthermore, the sampling tube is a square tube, and the piston is a square piston matched with the inner cavity of the sampling tube.

Has the advantages that: through the design, the air tightness of the piston and the inner cavity of the sampling cylinder can be reduced, so that the piston can be conveniently moved in the inner cavity of the sampling box under the condition that the test result is not influenced, and the difficulty in moving the piston caused by overlarge negative pressure in the sampling cavity in the moving process of the piston is avoided.

Further, the sampling tube is provided with the piston rod and dodges the one end in hole and installs the second outlet duct that switches on with the sampling tube inner chamber, the second outlet valve is installed on the second outlet duct, installs first outlet duct in the sampling tube one side of second outlet duct dorsad, installs the first outlet valve that is used for controlling the break-make on the first outlet duct, and first outlet duct switches on with the inner chamber of sampling tube and is used for the inside atmospheric pressure of balanced sampling tube at the piston removal in-process.

Has the advantages that: through the design, before the sample, open first outlet valve and second outlet valve, the piston rod drives the piston and removes to accomplish the exhaust once to the second outlet duct, close the second outlet valve, the push rod promotes the piston and removes to accomplish the exhaust twice to first outlet duct, with this impurity gas in the discharge sampling barrel inner chamber before the sample, improve the gaseous purity of sample after the sample is ended, ensure follow-up experimental precision, and can form the negative pressure in the inner chamber of sampling barrel after the exhaust, make the gas in the gas production pipe can directly pour into the sampling barrel inner chamber into, convenient operation, and simultaneously, after sample gas pours into to the sample chamber into, open first outlet valve, make first outlet duct and sample intracavity chamber switch on, later at the in-process that the removal piston seals sample gas in the sample chamber, first outlet duct switches on with the atmosphere all the time, can balance the inside atmospheric pressure of sampling barrel, avoid one side of sampling barrel dorsad to the sample chamber to cause the negative pressure to cause the piston to move the difficulty.

Furthermore, one end of the piston rod, which penetrates out of the piston rod avoidance hole, is fixedly connected with a push handle.

Has the advantages that: the push handle is utilized to drive the piston rod to move, so that the operation is convenient and the structure is simple.

Drawings

Fig. 1 is a schematic view of an overall structure of a sampling device for gas reservoir exploration according to embodiment 1 of the present invention;

fig. 2 is a schematic overall structure diagram of a fixing assembly of a sampling device for gas reservoir exploration according to embodiment 1 of the present invention;

fig. 3 is a cross-sectional view of a fixing box of a fixing component of a sampling device for gas reservoir exploration according to embodiment 1 of the present invention;

fig. 4 is a schematic perspective view of an installation box and a sampling box of a sampling device for gas reservoir exploration according to embodiment 1 of the present invention;

fig. 5 is a half sectional view of an installation box and a sampling box of a sampling device for gas reservoir exploration according to embodiment 1 of the present invention;

fig. 6 is a schematic view of the overall structure of a sampling box of a sampling device for gas reservoir exploration according to embodiment 1 of the present invention;

fig. 7 is a cross-sectional view of a sampling box of a sampling device for gas reservoir exploration according to embodiment 1 of the present invention.

Description of reference numerals:

1. installing a box; 2. a fixing assembly; 201. a fixing box; 202. an end cap; 203. a bidirectional threaded lead screw; 204. a slider; 205. a turntable; 206. a connecting rod; 207. hooping; 3. a communicating box; 5. a communicating pipe; 6. a connector; 7. opening and closing a valve; 8. a baffle plate; 9. a sampling box; 901. a sampling tube; 902. a side plate; 903. an air inlet; 904. a piston; 905. a piston rod; 906. a push handle; 907. a first outlet pipe; 908. a first gas outlet valve; 909. a second air outlet pipe; 910. a second gas outlet valve; 911. pushing the screw rod; 912. a pushing block; 913. a knob; 10. and fastening the bolt.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

It is to be noted that, in the detailed description of the present invention, terms such as "first" and "second" may be used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that such actual relationship or order exists between such entities or operations. Also, terms such as "comprises," "comprising," or any other variation thereof, which may be present, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the possible occurrence of the phrases "comprising a limited element of '8230', \8230;" 8230; "etc. does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

In the description of the present invention, unless otherwise explicitly specified or limited, terms such as "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be connected internally or indirectly to each other. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "provided" as may appear is to be understood in a broad sense, e.g., the object of "provided" may be part of the main body, or may be arranged separately from the main body and connected to the main body, which may or may not be detachable. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

The present invention will be described in further detail with reference to examples.

The utility model discloses a sampling device for gas reservoir exploration's concrete embodiment 1, as shown in fig. 1, 4, 5, the length direction of definition install bin 1 is preceding, rear direction to install bin 1 is the place ahead towards the direction of sampling pipe. The sampling device comprises a sampling assembly and a sampling cartridge 9.

The sampling component comprises an installation box 1, the length of the installation box 1 extends along the front-back direction, a sampling pipeline is installed on the top surface of the installation box 1 and comprises a communication box 3 and a communication pipe 5, the communication pipe 5 is provided with an opening and closing valve 7 which is used for controlling the on-off state, wherein the communication box 3 is hermetically welded on the top surface of the installation box 1, through holes are formed in the bottom surface of the communication box 3 and the corresponding positions on the top surface of the installation box 1, and the through holes are used for conducting the inner cavity of the communication box 3 and the installation box 1.

Be provided with the through-hole on the terminal surface of intercommunication box 3 orientation gas production pipe, the one end fixed mounting of communicating pipe 5 is on this terminal surface and with the sealed switch on of through-hole, the other end of communicating pipe 5 extends forward and installs connector 6, connector 6 be used for with the interface intercommunication of gas production pipe to this realizes switching on of gas production pipe and sample pipeline and then realize switching on with install bin 1 inner chamber.

As shown in fig. 1, 2 and 3, a fixing assembly 2 is fixedly mounted on the bottom surface of the mounting box 1, the fixing assembly 2 includes a fixing box 201 and a clasping member, the clasping member includes two connecting rods 206 and two hoops 207, and the connecting rods 206 are fixedly connected with the hoops 207. Wherein, the length of the fixing box 201 extends along the left and right direction and the top surface of the fixing box 201 is fixedly installed on the bottom surface of the installation box 1, and the connecting rod 206 extends along the front and rear direction.

The inside of the fixed box 201 is provided with a bidirectional threaded screw rod 203 extending along the left and right directions, two ends of the bidirectional threaded screw rod 203 are respectively rotatably mounted on two opposite end covers 202 of the fixed box 201, the left end of the bidirectional threaded screw rod 203 extends out of the left end cover 202 of the fixed box 201 and is fixedly provided with a turntable 205, and the turntable 205 is used for driving the bidirectional threaded screw rod 203 to rotate.

The lengths of different thread sections of the two-way thread screw 203 are the same, the sliding blocks 204 are respectively in threaded connection with the different thread sections, the sliding blocks 204 are located inside the fixed box 201, the sliding blocks 204 are matched with the inner wall of the fixed box and can move in the fixed box 201 in a guiding mode, the sliding blocks 204 can be driven to slide in the fixed box 201 in the opposite direction and in the opposite direction through rotation of the two-way thread screw 203, and when the two sliding blocks 204 move to the limit position in the opposite direction, the two sliding blocks 204 can be combined together.

An avoidance elongated slot is formed in the front side surface of the fixed box 201, one end of each of the two connecting rods 206 extends into the avoidance elongated slot and is fixedly connected with the front side surface of one of the sliding blocks 204, so that the two connecting rods 206 can be driven to move in the opposite directions and in the opposite directions along with the sliding of the sliding block 204, and the two connecting rods 206 can slide in the avoidance elongated slot in a guiding manner.

The front ends of the two connecting rods 206 are respectively fixedly connected with an anchor ear 207, the anchor ear 207 is of a semicircular ring structure with the inner diameter matched with the outer diameter of the gas production pipe, and the front ends of the connecting rods 206 are fixedly connected with the rear ends of the anchor ears 207. The concave surfaces of the two hoops 207 are oppositely arranged, and when the two hoops 207 move towards each other and are combined together to form a circular ring, the two connecting rods 206 are combined together. The internal diameter of staple bolt 207 and gas production pipe's external diameter looks adaptation, with this can hold tightly on the gas production pipe when two staple bolts 207 are in the same place, avoid droing from the gas production pipe, staple bolt 207 has certain width in the upper and lower direction simultaneously, set up like this, after the gas production pipe is held tightly to staple bolt 207, under the action of gravity, the unbalance loading of install bin 1 can produce the moment of decurrent rotation in staple bolt 207 and gas production pipe's junction, even if do not hold tightly between staple bolt 207 and the gas production pipe with this moment, there is the clearance, staple bolt 207 also can the chucking on the gas production pipe, further strengthen the fixed reliability between staple bolt 207 and the gas production pipe, ensure that sampling device can be stable all the time, fix on the sampling tube reliably.

The inner peripheral surface at staple bolt 207 is provided with the anti-skidding arris that the direction extends from top to bottom, and when staple bolt 207 hugged closely on the gas production pipe, utilize anti-skidding arris can increase the frictional force between staple bolt 207 and the gas production pipe, avoid staple bolt 207 to drop from the gas production pipe.

When the hoop 207 embraces the gas production pipe tightly together, the self-locking function of the bidirectional threaded screw rod 203 can be utilized to keep the embracing state of the hoop 207, the reliability of fixation between the sampling device and the gas production pipe is further enhanced, and the sampling device is prevented from falling off from the gas production pipe to cause use faults.

As shown in fig. 4, 5, 6 and 7, the mounting box 1 has an inner cavity penetrating front and back, and the sampling box 9 includes a sampling tube 901, and the sampling tube 901 is inserted into the inner cavity of the mounting box 1. A baffle plate 8 is fixedly arranged at the side opening of the front side of the mounting box 1, and the baffle plate 8 is provided with an opening. The sampling tube 901 is inserted into the mounting case 1 from the rear side opening of the mounting case 1 and then stopped and positioned by the shutter 8. The fixing hole is formed in the upper end face of the installation box 1, the fixing hole is a through hole and is provided with an internal thread, the fastening bolt 10 is connected to the internal thread of the fixing hole in a threaded mode, and after the sampling cylinder 901 is located in the inner cavity of the installation box 1, the sampling cylinder 901 can be fixed in the inner cavity of the installation box 1 by screwing the fastening bolt 10. To position and secure the sampling cassette 9 to the sampling assembly.

The upper end surface of the sampling tube 901 is provided with an air inlet 903, in this embodiment, the air inlet 903 is arranged close to the front side of the sampling tube 901, and after the sampling tube 901 is positioned in the inner cavity of the installation box 1, the air inlet 903 of the sampling tube 901 is communicated with a through hole which is communicated with a sampling pipeline on the installation box 1 and is coaxially arranged, so that the sampling tube 901 is communicated with the sampling pipeline. Be provided with the sealing member on the last side of install bin 1 inner chamber, the sealing member is the sealing strip (not seen in the figure), and the width of sealing strip is not less than the through-hole on the install bin 1 and the maximum diameter of sampler barrel 901 air inlet 903, the through-hole has been seted up to the position department that corresponds air inlet 903 on the sealing strip, in order to guarantee to insert install bin 1 back when sampler barrel 901, utilize the sealing strip can make the air inlet 903 of sampler barrel 901 and the through-hole of install bin 1 sealed switch on, ensure the gas tightness, avoid the natural gas to leak in the sampling process, the corresponding position at the fixed orifices of install bin 1 on the sealing strip still is provided with dodges the hole, utilize and dodge the hole and dodge fastening bolt 10's motion.

In this embodiment, the sampling tube 901 is a square tube, a piston 904 slidably and sealingly engaged with the inner cavity of the sampling tube 901 is installed in the sampling tube 901, and the piston 904 is a square piston fitted with the inner cavity of the sampling tube 901. A piston rod 905 is fixedly mounted on the rear side surface of the piston 904, a piston rod avoiding hole is formed in the rear side plate 902 of the sampling tube 901, the piston rod 905 extends towards the rear side and extends out of the piston rod avoiding hole, and a push handle 906 is fixedly connected to the extending end. A sealing element is arranged between the piston rod 905 and the piston rod avoiding hole of the side plate 902, the sealing element is a sealing ring, the outer peripheral surface of the sealing ring is fixed on the inner peripheral surface of the avoiding hole, and the piston rod 905 is inserted from the inner peripheral surface of the sealing element, so that the piston rod 905 is always in sealing contact with the sampling cylinder 901 in the drawing process, the overall air tightness of the sampling box 9 for containing sample gas is ensured, and sample leakage is avoided.

In this embodiment, a second air outlet pipe 909 that is communicated with the inner cavity of the sampling cylinder 901 is installed on the side plate 902 of the sampling cylinder 901, a second air outlet valve 910 that is controlled to be opened and closed is installed on the second air outlet pipe 909, a first air outlet pipe 907 is installed on an end surface of the sampling cylinder 901 that faces away from the side plate 902, and a first air outlet valve 908 that is controlled to be opened and closed is installed on the first air outlet pipe 907. After the sampling cylinder 901 is inserted into the inner cavity of the installation box 1 and fixed, the first outlet pipe 907 and the first outlet valve 908 can extend out from the opening of the baffle plate 8. The first outlet pipe 907 and the connecting rod 206 of the fixing component 2 extend out towards the front side, an operation space for the first outlet pipe 907 and the first outlet valve 908 is reserved between the installation box 1 and the gas production pipe, and the length of the connecting rod 206 is larger than the front length and the rear length of the reserved space.

In this embodiment, a threaded hole is formed in the end face of the front side of the sampling cylinder 901, a push screw rod 911 is spirally installed in the threaded hole, preferably, one end of the push screw rod 911 extends into the sampling cylinder 901 and is fixedly connected with a push block, the push screw rod 911 can drive the push block 912 to abut against the end face of the piston 904, which faces away from the piston rod 905, and drive the piston 904 to cross the rear limit position of the air inlet 903, so as to form a sampling cavity for sealing sample gas in the sampling cylinder 901, and at the same time, the piston 904 can be limited to move forward, so that after sampling is completed, even if the push handle 906 is touched by mistake or collided, the front and rear positions of the push handle 906 cannot be changed under the action of the push screw rod 911, so as to avoid that the push screw rod 911 and the piston 904 are damaged by the end face in the rotary advancing process, and the contact area between the push screw rod 911 and the piston 904 can be increased by the push block 912.

Preferably, a knob 913 is fixedly connected to an end of the push screw 911 extending out of the sampling cylinder 901, and the push screw 911 is driven to move in the sampling cylinder 901 by rotating the knob 913. Preferably, the push screw rod 911 and the piston rod 905 are coaxially arranged, so that when the push handle 906 is collided, acting force can be directly transmitted to the push screw rod 911, bending moment caused by the piston 904 cannot be generated, the stress of the piston 904 is balanced, the piston 904 is further protected, and meanwhile, sample leakage and device use faults caused by bending deformation of the piston rod 905 after being stressed can be avoided.

In this embodiment, the air inlet 903 is disposed near the front side of the sampling cylinder 911, on one hand, the volume of a sampling cavity enclosed by the piston 904 and the sampling cylinder 901 can be increased, meanwhile, it can be avoided that the piston 904 is difficult to move due to the fact that the pressure inside the sampling cavity is too large because the volume of compressed sample gas is generated in the moving process of the piston 904, on the other hand, the length of the piston rod 905 extending out of the sampling cylinder 901 after sampling is reduced, the possibility that the piston rod 905 is collided is reduced, further, sample gas leakage is avoided, meanwhile, the overall length of the push screw rod 911 can be reduced, and the whole body is made to be more compact.

The utility model discloses a sampling device for gas reservoir exploration's working process does:

when the sampling device is used, the rotary disc 205 is rotated to enable the two hoops 207 which are combined together to move away from each other, the sampling device is moved to enable the two hoops 207 to be respectively arranged at two sides of the gas production pipe, then the rotary disc 205 is rotated to enable the two hoops 207 to be tightly held on the gas production pipe, and therefore the device is reliably fixed on the gas production pipe.

Furthermore, the connector 6 on the installation box 1 is communicated with the corresponding connector on the gas production pipe, so that the conduction of the inner cavity of the sampling box and the gas production pipe is realized, and the installation work of the sampling assembly is completed.

After the sampling device is installed, insert sampling box 9 into install bin 1 from the rear side opening of install bin 1, until sampling cylinder 901 butt of sampling box 9 is on the baffle 8 of install bin 1, first outlet duct 907 and first air outlet valve 908 stretch out towards the front side from the opening of baffle 8, accomplish the location of sampling box 9, the air inlet 903 of sampling cylinder 901 and the through-hole that install bin 1 switched on with the sampling pipeline utilize the sealing washer to seal and switch on this moment, later tighten fastening bolt 10 until fastening bolt 10 butt on sampling cylinder 901, make sampling box 9 fix in install bin 1, accomplish the installation of sampling device, in order to wait to sample.

Before sampling, the second air outlet valve 910 and the first air outlet valve 908 are firstly opened, the push handle 906 is pulled to drive the piston 904 to move towards the second air outlet pipe 909 until the piston 904 is in contact with the rear side plate 902 of the sampling cylinder 901, so that gas on the rear side of the piston 904 in the inner cavity of the sampling cylinder 901 is discharged, primary exhaust is completed, then the second air outlet valve 910 is closed, the push handle 906 is pushed to drive the piston 904 to move towards the first air outlet valve 908 until the piston 904 crosses the air inlet 903 and reaches the front side position of the air inlet 903, and the first air outlet valve 908 is closed, so that gas on the front side of the sampling cylinder 901 is discharged, secondary exhaust is completed, a negative pressure cavity is formed between the rear end face of the piston 904 and the sampling cylinder 901, meanwhile, the square piston 904 is a square piston matched with the inner cavity of the sampling cylinder 901, the airtightness between the piston 904 and the inner cavity of the sampling cylinder 901 can be properly reduced by the square piston, and a small amount of gas can enter the cavity during secondary exhaust, the thrust force which needs to be overcome on the negative pressure applied to the push handle 906 can be reduced, the negative pressure in the negative pressure cavity is prevented from being too large, and the piston 904 is difficult to move, and the sample cannot be generated in a subsequent test.

After the exhaust is completed, the opening and closing valve 7 is opened, and at the moment, the inside of the sampling cylinder 901 is negative pressure, so that sample gas in the gas sampling pipe can be directly injected into the inner cavity of the sampling cylinder 901 through a sampling pipeline, and meanwhile, after the opening and closing valve 7 is opened, the sample gas can supplement gas in the negative pressure cavity immediately, so that in the process, the action time of pushing force applied to the push handle 904 for overcoming the negative pressure of the negative pressure cavity is short, the actual operation can be carried out, and the operation difficulty cannot be caused.

After the injection of the sample gas is finished, the knob 913 is rotated to push the lead screw 911 to drive the pushing block 912 to abut on the piston 904 and drive the piston 904 to move backwards until the piston 904 crosses the gas inlet 903 to seal the sample gas in a sealed sampling cavity enclosed by the rear end surface of the piston 904 and the sampling cylinder 901, preferably, in the process, the first gas outlet valve 908 is opened, so that in the moving process of the piston 904, external gas can supplement gas in the sampling cylinder 901 on the front side of the piston 904, and the difficulty in moving the piston 904 due to a negative pressure cavity formed between the front end surface of the piston 904 and the sampling cylinder 901 is avoided. After the sampling work is finished, the pushing screw rod has a self-locking function, the position of the pushing handle 906 cannot be changed under the conditions of mistaken collision or collision and the like, the position of the piston 904 can be kept unchanged, and the situation that the pushing handle 906 is mistakenly collided or collided to cause sample gas leakage to cause sampling failure is avoided.

After sampling, close on-off valve 7 and first air outlet valve 908, take out sampling box 9 from the rear side opening of install bin 1, accomplish the single sample, when need carry out single batch multiple sampling, can insert other sampling box 9 in the install bin 1, repeat above-mentioned process, realize utilizing a sampling subassembly and a plurality of sampling box 9 to accomplish single batch multiple sampling, and only need take sampling box 9 out from the sampling subassembly after finishing at every turn and take away and can carry out tests such as follow-up detection.

The utility model discloses a sampling device for gas reservoir exploration's embodiment 2, this embodiment lies in with embodiment 1's difference, in embodiment 1, set up threaded hole on the front side end face of sampler barrel, threaded hole internal screw installs the promotion lead screw, the one end that promotes the lead screw stretches into the sampler barrel and can drives the piston and cross the air inlet, and then form the sample chamber that is used for sealed sample gas in the sampler barrel, simultaneously can restrict the piston towards the place ahead motion, in this embodiment, it has a dead lever to articulate on the trailing flank of sampler barrel, when taking a sample, push away handle pulling piston until the piston cross the air inlet with sample gas seal in the sealed sample chamber that the rear end face of piston and sampler barrel enclose, rotate the dead lever this moment and make the dead lever support tightly on the preceding terminal surface of push away the handle, with the removal of this restriction push away handle, and the length of fixed lever is not less than the piston and crosses the distance between the preceding terminal surface of air inlet rear piston to the sampler barrel inner chamber preceding terminal surface, utilize the dead lever to keep the position of push away the sample handle as limit structure to the sample handle, simultaneously because be close to the front side of air inlet, consequently, alright it can not need move the piston to cross the too big distance to drive the piston and can not cause the difficulty of the piston in the excessive removal of the sample chamber of the piston, the removal process also can cause the piston to further removal simultaneously, the big difficulty of the piston extrusion.

The utility model discloses a sampling device for gas reservoir exploration's embodiment 3, this embodiment lies in with embodiment 1's difference, in embodiment 1, the air inlet is close to the front side of sampler barrel and arranges, the closed chamber that the rear end face of sample chamber for the piston crossed the rear extreme spacing back of air inlet and the rear side of sampler barrel encloses, piston rod fixed connection is in the one end of piston towards sample chamber, in this embodiment, the air inlet is close to the rear side of sampler barrel and arranges, the closed chamber that the front end face of sample chamber for the piston crossed the front extreme spacing back of air inlet and the front side of sampler barrel encloses, piston rod fixed connection is in the one end of piston dorsad sample chamber, this moment offer the screw hole on the rear end face of seting up piston rod dodge hole at the sampler barrel, the screw hole is interior spiral shell to install the lead screw, the one end of lead screw stretches into the sampler barrel can the butt drive the piston forward movement on the rear end face of piston and restrict the reverse backward movement of piston until crossing the air inlet, the other end of lead screw stretches out the sampler barrel and closes the end for revolving, and it no longer need the sealing member to keep away between the hole this moment.

The utility model discloses a sampling device for gas reservoir exploration's embodiment 4, this embodiment lies in with embodiment 1's difference, in embodiment 1, the piston is the square piston with the inner chamber adaptation of sampler barrel, in this embodiment, the piston is the circular piston with sampler barrel inner chamber adaptation, it is used for making the air inlet of sampler barrel and the instruction line that the through-hole that the installation box communicates with the sampling pipe corresponds to mark on installation box and sampler barrel this moment, guarantee to insert the sampler barrel according to the instruction line behind the installation box through-hole that the installation box communicates with the sampling pipe can be aimed at to the air inlet, ensure follow-up sample work smoothly, and sealing member between air inlet and the through-hole is curved cambered surface structure for the outer peripheral face this moment, and the inner peripheral face shape adaptation of cambered surface and sampler barrel, the outer peripheral face of cambered surface and the inner peripheral face shape adaptation of installation box, can improve the gas tightness between piston and the sampler barrel like this, but will increase the power of exerting on the pushing handle when secondary exhaust, with this removal that drives the piston, after sample gas pours into in the sampler barrel, because it is changeing the screw hole, and then there is not to promote the piston removal, consequently, the circular difficult problem of this removal process.

The utility model discloses a sampling device for gas reservoir exploration's embodiment 5, this embodiment lie in with embodiment 1's difference, in embodiment 1, the air inlet is close to the front side of sampler barrel and arranges, and in this embodiment, the air inlet is arranged at the intermediate position that the sample was used, utilizes the rotatory degree of difficulty that can reduce the piston removal that gos forward of promotion lead screw, can not cause the piston to remove the difficulty, ensures that the piston can cross the air inlet of intermediate position and sampler barrel and encloses into the sample chamber that is used for sealed sample gas.

The utility model discloses a sampling device for gas reservoir exploration's embodiment 6, this embodiment lies in with embodiment 1's difference, in embodiment 1, first outlet duct is installed on the terminal surface of sampler barrel second outlet duct dorsad, in this embodiment, first outlet duct is located when the piston motion to the position after the secondary exhaust on the side of the space that encloses with the sampler barrel of second outlet duct dorsad, first outlet duct is installed in one side of sampler barrel second outlet duct dorsad promptly and can not produce the position department of interfering with the motion of piston.

The utility model discloses a sampling device for gas reservoir exploration's embodiment 7, this embodiment lies in with embodiment 1's difference, in embodiment 1, after sample gas pours into to the sampling tube, need open first air outlet valve then utilize the promotion lead screw to promote the piston and cross the air inlet, form the negative pressure chamber between the front end of avoiding the piston and the sampling tube, cause the piston to remove the difficulty, in this embodiment, after sample gas pours into to the sampling tube, promote the in-process that the piston removed at the promotion lead screw, first air outlet valve closes all the time, the piston is at the removal in-process this moment, can form the negative pressure chamber with the sampling tube front side at terminal surface before the piston, but can not arouse the piston to remove the difficulty owing to promote this rotatory characteristics of advancing of lead screw, and because the position of air inlet is close to first air outlet valve and the piston is square, until with gas seal before the sampling chamber at the piston motion, can not cause too big negative pressure at the place ahead of sampling tube to arouse the operation difficulty, can avoid external gas to get into the sampling chamber and cause sample gas to mix when the sample simultaneously like this and cause sample gas to reduce, and then improve the accuracy of experimental data.

The utility model discloses a sampling device for gas reservoir exploration's embodiment 8, this embodiment lies in with embodiment 1's difference, in embodiment 1, set up threaded hole on the preceding side end face of sampler barrel, spiral installation has the promotion lead screw in the screw hole, utilize the promotion lead screw to promote the piston and remove, and utilize the self-locking function who promotes lead screw itself to avoid the piston reverse motion to cause sample gas leakage after the piston crosses the air inlet, in this embodiment, the through-hole has been seted up and fixed mounting has the fixed block on the preceding side end face of sampler barrel at the preceding side end face of sampler barrel, around following on the fixed block, the cross through-hole has been seted up to left and right sides direction, and the through-hole diameter of fore-and-aft direction is the same with the through-hole diameter of sampler barrel preceding terminal surface and coaxial arrangement, wear to be equipped with the catch bar on the fixed block, the one end of catch bar stretches into the sampler barrel and is used for promoting the piston to remove, the other end is provided with left and right directions's through-hole, after the air inlet is crossed to the catch bar promotion piston, the through-hole of catch bar left and right directions is just in the same with the through-hole of fixed block, insert the through-hole with the fixed pin of left and right directions through-right sides direction adaptation this moment, with the removal of this moment, thereby restrict the removal of catch bar restriction catch bar, and cause sample leakage, and reverse movement, and leakage.

The utility model discloses a sampling box's for gas reservoir exploration concrete embodiment: the structure of the sampling box is the same as that of the sampling box of the sampling device in the above embodiments, and is not described herein again.

Finally, it should be noted that the above mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments may be modified without inventive effort, or some technical features may be substituted equally. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a sampling box for gas reservoir exploration, a serial communication port, including sampling tube (901), offer on the lateral wall of sampling tube (901) and be used for air inlet (903) with the gas production pipe intercommunication, install piston (904) rather than inner chamber sliding seal complex in sampling tube (901), one end fixedly connected with piston rod (905) of piston (904), be provided with the piston rod and dodge the hole towards the terminal surface of the one end that piston (904) and piston rod (905) are connected in sampling tube (901), the one end longitudinal extension of piston rod (905) is worn out the piston rod and is dodged the hole and dodge hole sliding fit with the piston rod, piston rod (905) can drive piston (904) forward movement and cross air inlet (903) in order to form the sample chamber that is used for sealed sample gas in sampling tube (901), sampling tube (901) are located and are equipped with second air outlet valve (910) on the outer terminal surface of sample chamber one side, second air outlet valve (910) are used for controlling the inner chamber and the external atmospheric limit structure that sampling tube (901) removed after the sample is ended still be provided with on break-make-and break tube (901).

2. A sampling box for gas reservoir exploration, as claimed in claim 1, wherein the sampling cylinder (901) is provided with a stop member, located on the side of the piston (904) facing away from the sampling chamber, for stopping the piston (904) against the piston (904) after the piston (904) has enclosed the sample gas in the sampling chamber, to limit the reverse movement of the piston (904), the stop member constituting said limit structure.

3. The sampling box for gas reservoir exploration, as claimed in claim 2, wherein the piston rod (905) is fixedly connected to an end of the piston (904) facing the sampling cavity, the piston rod (905) is in sliding sealing fit with the piston rod clearance hole, and the piston rod (905) and the stopper are coaxially arranged.

4. The sampling box for gas reservoir exploration according to claim 3, wherein a threaded hole is formed in one end, facing away from the piston rod avoidance hole, of the sampling cylinder (901), a push screw rod (911) is spirally installed in the threaded hole, one end of the push screw rod (911) extends into the sampling cylinder (901) and can abut against the end face, facing away from the piston rod (905), of the piston (904) to drive the piston (904) to cross the air inlet (903) and limit the reverse movement of the piston (904), the other end of the push screw rod (911) extends out of the sampling cylinder (901) to form a screwing end, and the push screw rod (911) forms the abutting piece.

5. The sampling box for gas reservoir exploration according to claim 4, characterized in that a pushing block (912) is fixedly connected to the end of the pushing screw (911) facing the piston (904), and a knob (913) is fixedly connected to the end of the pushing screw (911) facing away from the piston (904), the knob (913) constituting said screwing end.

6. A sampling box for gas reservoir exploration, as claimed in any one of claims 3 to 5, characterised in that the gas inlet (903) is located close to one end of the sampling tube (901) and facing away from the sampling cavity.

7. A sampling box (9) for gas reservoir exploration, as claimed in any of the claims 1 to 5, characterised in that the sampling cylinder (901) is a square cylinder and the plunger (904) is a square plunger fitted to the internal cavity of the sampling cylinder (901).

8. The sampling box for gas reservoir exploration according to any one of claims 1 to 5, wherein one end of the sampling cylinder (901) provided with the piston rod relief hole is provided with a second air outlet pipe (909) communicated with the inner cavity of the sampling cylinder (901), the second air outlet valve (910) is installed on the second air outlet pipe (909), one side of the sampling cylinder (901) facing away from the second air outlet pipe (909) is provided with a first air outlet pipe (907), the first air outlet pipe (907) is provided with a first air outlet valve (908) for controlling on-off, and the first air outlet pipe (907) is communicated with the inner cavity of the sampling cylinder (901) to balance the internal air pressure of the sampling cylinder (901) in the moving process of the piston (904).

9. The sampling box for gas reservoir exploration as claimed in any one of claims 1 to 5, wherein a push handle (906) is fixedly connected to one end of the piston rod (905) which penetrates through the piston rod avoiding hole.

10. A sampling device for gas reservoir exploration, comprising a sampling assembly mounted on a gas production pipe and a sampling box (9) mounted on the sampling assembly, the sampling assembly comprising a sampling pipe for communicating the gas production pipe with an air inlet (903) of the sampling box (9), the sampling box (9) being a sampling box (9) according to any one of claims 1 to 9.

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