CN111220412A - Petroleum liquid sampling device - Google Patents

Abstract

The invention provides a petroleum liquid sampling device, comprising: the oil container comprises a pumping device and an oil container, wherein the pumping device is communicated with the oil container, an oil port communicated with an inner cavity of the oil container is formed in the bottom of the oil container, and at least one oil inlet pipe communicated with the inner cavity of the oil container is arranged on the outer surface of the oil container; the pressure pumping device is used for pumping air into the oil container so as to enable the liquid to be extracted to enter the oil container from the oil port and/or the oil inlet pipe, and is used for pressurizing air into the oil container so as to enable the sample in the oil container to be discharged from the oil port. The extracting device in the petroleum liquid sampling device provided by the invention is connected with the oil container, and liquid samples with different depths are obtained by adjusting the height of the sampling device, so that the sampling precision of the sampling device is improved.

Description

Petroleum liquid sampling device

Technical Field

The invention relates to the field of petroleum devices, in particular to a petroleum liquid sampling device.

Background

The crude oil can be placed in the settling cask in the united station or the oil storage tank in the oil storage storehouse after being mined and is stored, in order to guarantee the quality of the crude oil during storage, the crude oil in the tank needs to be regularly sampled, the quality change condition of the crude oil in the inspection tank can not be found in time when the quality of the crude oil goes wrong, and further loss is caused.

At present, the sample of crude oil generally divide into two kinds of sampling modes of artifical sample and mechanical automatic sampling, and artifical sample is generally that the staff scrambles the sample connection to jar body top, then ties up the sampling bottle on the rope, and it is internal to suspend in midair the entering jar that uses the mode of lifting rope, treats that the sampling bottle is filled the back and then proposes the sampling bottle, and mechanical automatic sampling then is by sampling device regularly automatic to jar internal crude oil sample.

However, there are some drawbacks in artifical sample and mechanical automatic sampling, the body volume of storing crude oil is very big, the uncovered formula sampling mode of sampling bottle that adopts during artifical sample, but when the liquid sample to the different degree of depth, there is different degree of depth liquid mixing phenomenon, cause the sample precision low, there is different degree of depth liquid mixing phenomenon, and the sampling volume can't be controlled, cause the waste easily simultaneously, machinery automatic sampling has above-mentioned problem equally, can only take a sample to the liquid of a certain degree of depth of fixed point, can't take a sample respectively to the liquid of the different degree of depth.

Disclosure of Invention

The invention provides a petroleum liquid sampling device, which adopts a pumping device to be connected with an oil container to realize accurate sampling of samples at different depths and solves the technical problems that the sampling device in the prior art needs low sampling precision during sampling and the sampling quantity cannot be controlled.

The invention provides a petroleum liquid sampling device, comprising: the oil container comprises a pumping device and an oil container, wherein the pumping device is communicated with the oil container, an oil port communicated with an inner cavity of the oil container is formed in the bottom of the oil container, and at least one oil inlet pipe communicated with the inner cavity of the oil container is arranged on the outer surface of the oil container; the pressure pumping device is used for pumping air into the oil container so as to enable the liquid to be extracted to enter the oil container from the oil port and/or the oil inlet pipe, and is used for pressurizing air into the oil container so as to enable the sample in the oil container to be discharged from the oil port.

Furthermore, the oil container is an ellipsoid with a hollow inner part, the pressure pumping device is communicated with one end of the major axis of the ellipsoid, the oil port is formed in the other end of the major axis of the ellipsoid, and the oil inlet pipes are arranged on two sides of the minor axis of the ellipsoid.

Further, the top end of the oil container is provided with a connecting assembly, and the connecting assembly is used for communicating the pumping device with the oil container.

Further, the connection assembly includes: the oil container comprises a connecting pipe, an upper fixing disc and a lower fixing disc, wherein the upper fixing disc and the lower fixing disc are fixed by the connecting pipe, the lower fixing disc is located in the oil container, the upper fixing disc is located outside the oil container, the upper fixing disc and the lower fixing disc are connected through fastening bolts, one end of the connecting pipe penetrates through the upper fixing disc and the lower fixing disc and extends into an inner cavity of the oil container, and the other end of the connecting pipe is communicated with the pumping device.

Further, the connecting pipe comprises an air pipe and a pumping pipe which is inserted into the air pipe and connected with the air pipe, wherein the pumping pipe is fixed on the outer wall of the oil container through the upper fixing disc and the lower fixing disc, one end of the air pipe is communicated with the pumping device, and the other end of the air pipe is communicated with the oil container through the pumping pipe.

Further, still include: and the connecting cover is matched with the top end of the oil container in shape, is connected with the top end of the oil container through clamping, threads or a fastener, and is provided with a pipe penetrating hole through which the connecting pipe can penetrate.

Further, still include: and the other end of the hook rope is connected with a hanging buckle arranged on the connecting cover.

Further, the oil inlet pipe comprises a connecting end and an oil inlet end, wherein the connecting end is connected with the oil container, the oil inlet end is provided with an oil pipe cover capable of controlling the opening or closing of the oil inlet end, a fixing groove rotationally connected with the oil pipe cover is arranged on the periphery of the oil inlet end of the oil inlet pipe, a rotary groove is formed in the end surface of the oil inlet end, and an oil inlet through hole is formed in the bottom of the rotary groove; the oil pipe cover is provided with an inner folded edge matched with the fixing groove and an oil inlet butt joint capable of moving in the rotary groove, wherein when the oil pipe cover rotates, the oil inlet butt joint moves to the oil inlet through hole, the oil inlet through hole is opened, and when the oil inlet butt joint moves away from the oil inlet through hole, the oil inlet through hole is closed.

Further, the pressure pumping device comprises: change handle, threaded rod, inflator, change box, turn round, piston and head of bleeding, wherein, the one end of threaded rod with change the connection, the other end of threaded rod with the turn round is connected, the joint of turning round is in the turn box, change the box with the piston is connected, the threaded rod partly with turn round the box and the piston all is located one side in the inflator, the piston joint is in the inflator, the inflator with the position that the threaded rod is connected be equipped with the screw thread that the threaded rod matches, the threaded rod with inflator threaded connection, the one end of head of bleeding with the opposite side intercommunication of inflator, the other end of head of bleeding with the trachea is connected.

Furthermore, a falling block is arranged at the bottom end of the oil container, and the oil port is formed in the falling block.

The present embodiment provides a petroleum liquid sampling device by including: the oil pumping device can pump air into the oil container to enable liquid to be taken to enter the oil container, the oil pumping device can also inject air into the oil container to enable the liquid in the oil container to be discharged out of the oil container, the oil container can simultaneously enable the liquid to be taken to enter the oil container at different depths due to the arrangement of the oil ports and the oil inlet pipes which are different in position when sampling, the integral sampling in a local range is realized, the sampling precision is improved, the sampling device has a simple structure and is convenient to operate, the oil inlet pipes and the oil ports can simultaneously sample, the sampling speed and the sampling efficiency are also improved, and the problem that in the prior art, particularly during manual sampling, other samples at different depths are easily mixed in a sampling bottle in the lifting process after sampling is solved, the sampling precision is low, so that the analysis result of the obtained sample is not accurate enough.

Drawings

Fig. 1 is a schematic view of an overall structure of a petroleum liquid sampling device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a connection assembly of a petroleum liquid sampling device according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a connection cap of a petroleum liquid sampling device according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an oil inlet end of a petroleum liquid sampling device according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an oil pipe cap of an oil sampling device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a pumping device of a petroleum liquid sampling device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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 present embodiment provides a petroleum liquid sampling device 1, as shown in fig. 1, including: the oil container 10 comprises a pumping device 20 and an oil container 10, wherein the pumping device 20 is communicated with the oil container 10, an oil port 40 is formed at the bottom of the oil container 10, the oil port 40 is communicated with a cavity inside the oil container 10, at the same time, at least one oil inlet pipe 13 is further arranged on the outer surface of the oil container 10, the oil inlet pipe 13 is communicated with the cavity inside the oil container 10, the number of the oil inlet pipes 13 can be set according to actual conditions, the oil inlet pipe 13 and the oil port 40 are communicated with the cavity inside the oil container 10, therefore, when sampling is conducted, liquid to be sampled can enter the oil container 10 together through the oil inlet pipe 13 and the oil port 40, the sampling speed is increased, the pumping device 20 provides power for the sampling device 1, the pumping device 20 is divided into a pumping state and a pressing state, when sampling is conducted, the pumping device 20 pumps air into the oil container 10, the liquid to be sampled can enter the cavity inside the oil container 10 from the oil port 40 and the oil inlet pipe 13 or only one of the oil port 40 and the oil inlet pipe At this time, the pumping device 20 is still in the pumping state, and the inside of the oil container 10 is in the negative pressure state, and the oil container 10 is being lifted out. The sample in the oil container 10 will not leak out from the oil container 10 under the negative pressure state, even if there is liquid flowing out from the oil port 40 at the bottom of the oil container 10 due to the gravity, the sample liquid is crude oil, the crude oil itself is very viscous and not easy to flow out from the oil container 10, therefore, the liquid flowing out in the process of lifting the sampling device 1 is limited and can be ignored, after the sampling device 1 is lifted out of the oil storage tank body, the pressure pumping device 20 enters the pressure state, the sample liquid in the cavity of the oil container 10 is discharged from the oil port 40 formed at the bottom of the oil container 10 by injecting gas into the oil container 10, when the liquid is discharged, the sample liquid can be discharged from the oil inlet pipe 13 mainly depending on the oil port 40 at the bottom of the oil container 10, of course, but the oil inlet pipe 13 is located at the side of the oil container 10, and the oil port 40 at the bottom can not only discharge the sample liquid rapidly but also achieve complete discharge under the combined action of the gravity, residual liquid at the bottom of the oil container 10 is avoided.

It should be noted that, in this embodiment, the oil port 40 and the oil inlet pipe 13 on the oil container 10 are arranged, the number and the position of the oil inlet pipe 13 are not unique, and can be set according to the actual situation on site, during sampling, the oil port 40 at the bottom of the oil container 10 can be used for sampling singly, but this will result in the accuracy reduction of sampling, and only a sample with a single depth can be obtained, while the arrangement of the oil inlet pipe 13 can speed up the sampling speed during sampling, on the other hand, the heights and the positions of the oil inlet pipe 13 and the oil port 40 are different, during sampling, samples with different depths in a small range can be sucked into the oil container 10 together, at this time, the sample taken by the oil container 10 is a mixed sample, and the overall quality attribute of the crude oil sample in the oil storage tank can be mastered more comprehensively by analyzing and processing such sample, in the prior art, no matter manual sampling or mechanical automatic sampling can only be single to get the sample of same degree of depth, lead to the sampling precision lower, moreover, during manual sampling, in-process that the sample was lifted, mix into the sample of other depths easily, cause the result of sample analysis inaccurate.

The present embodiment provides a petroleum liquid sampling device 1 by including: the oil pumping device 20 and the oil container 10 are communicated, the oil pumping device 20 is communicated with the oil container 10, the bottom of the oil container 10 is provided with an oil port 40 communicated with the inner cavity of the oil container 10, the outer wall of the oil container 10 is also provided with an oil inlet pipe 13 communicated with the inner cavity of the oil container 10, the oil pumping device 20 pumps air into the oil container 10 to enable the liquid to be taken to enter the oil container 10, the oil pumping device 20 can also inject air into the oil container 10 to enable the liquid in the oil container 10 to be discharged out of the oil container 10, the oil container 10 can enable the liquid to be taken at different depths to simultaneously enter the oil container 10 due to the arrangement of the oil port 40 and the oil inlet pipe 13 which are different in position during sampling, the integral sampling in a local range is realized, the sampling precision of the sampling is improved, the sampling device 1 is simple in structure and convenient to operate, and the oil inlet pipes 13 and 40 can simultaneously sample the oil port and the efficiency of, the problem of among the prior art, especially during the manual sampling, the sampling bottle is got the sample and is mixed the sample of other different degree of depth easily at the in-process of lifting, causes the sampling precision low, causes the not accurate technique of analysis result of getting the sample.

Further, in this embodiment, the oil container 10 is an ellipsoid with a hollow interior, and is specifically a hollow container with a large middle and small two ends, wherein the smaller two ends of the oil container 10, i.e. the two ends of the major axis of the ellipsoid, one end of the major axis is communicated with the air extractor, the other end is communicated with the oil port 40, the upper and lower ends of the oil container 10 are respectively connected with the air extractor and the oil port 40, the oil inlet pipe 13 is disposed in the middle of the oil container 10, i.e. the minor axis of the ellipsoid, the oil inlet pipe 13 is generally at least provided with two sets, one set is the air extractor near the top end of the oil container 10, the other set is near the oil port 40 at the bottom end of the oil container 10, although more oil inlet pipes 13 may be provided according to the actual situation, preferably, at least two sets of the oil inlet pipes 13 are ensured to be respectively provided near the, meanwhile, the number of the oil inlets 40 in each group is not unique, and one or more oil inlets 40 may be provided, each group of the oil inlets 40 has the same height, and are arranged on the outer surface of the oil container 10 at equal intervals, for example, a circle of oil inlets 40 is provided on the outer side surface of the oil container 10 close to the top end, a circle of oil inlets 40 is provided on the outer side surface of the middle part of the oil container 10, and a circle of oil inlets 40 is provided on the outer side surface of the oil container 10 close to the bottom end, in the above case, multiple groups of the oil inlets 40 are provided to expand the sampling range and fully cover samples of various depths, but the specific arrangement is determined by the actual volume of the oil container 10, in this embodiment, the preferable oil container 10 is provided with two groups of the upper and lower oil inlet pipes 13, and the.

Further, in this embodiment, a connection assembly 11 is disposed at the top end of the oil container 10, the pumping device 20 and the oil container 10 are connected together through the connection assembly 11, the connection assembly 11 plays a role of connection, and on the other hand, the connection assembly 11 provides a certain sealing property to ensure the sealing connection between the oil container 10 and the pumping device 20, when the pumping device 20 pumps air into the oil container 10, a certain sealing property needs to be ensured, otherwise, in the process of lifting the sampling device 1, all liquid in the oil container 10 flows out.

Further, in the present embodiment, as shown in fig. 2, the connection assembly 11 includes: the oil container comprises a connecting pipe, an upper fixed disc 112 and a lower fixed disc 114, wherein the upper fixed disc 112 and the lower fixed disc 114 fix the connecting pipe in the middle, the lower fixed disc 114 is positioned in the oil container 10 and is tightly attached to the inner wall of the oil container 10, the upper fixed disc 112 is positioned outside the oil container 10, the upper fixed disc 112 and the lower fixed disc 114 are correspondingly arranged at intervals of the oil container 10, fastening bolts 113 connect the upper fixed disc 112 and the lower fixed disc 114 together, the upper fixed disc 112 and the lower fixed disc 114 are tightly fastened through the fastening bolts 113 so that the upper fixed disc 112 and the lower fixed disc 114 are tightly attached to the oil container 10, so as to ensure the sealing performance of an interface of the oil container 10, after a solution to be taken is sucked into the oil container 10 by a drawing device, the oil container 10 needs to be in an internal pressure state, and the liquid in the oil container 10 is prevented from directly leaking out in the process of lifting, therefore, the upper fixed disc 112 and the lower, the sealing performance is ensured, meanwhile, a connecting pipe penetrates through the upper fixing disc 112 and the lower fixing disc 114 and enters the oil container 10, one end of the connecting pipe extends into the inner cavity of the oil container 10, the other end of the connecting pipe is connected with the pressure pumping device 20, and the pressure pumping device 20 can directly pump air out of the oil container 10 or inject air into the oil container 10 through the connecting pipe.

Further, in the present embodiment, the connection pipe includes: the oil container comprises an air pipe 28 and a pumping pipe 111, wherein the pumping pipe 111 penetrates between an upper fixing disc 112 and a lower fixing disc 114 and extends into an inner cavity of the oil container 10, the pumping pipe 111 is a hard pipe and has certain strength, the air pipe 28 is a flexible pipe, the air pipe 28 is connected with the pumping pipe 111, specifically, the air pipe 28 is inserted into the pumping pipe 111, one end of the air pipe 28 is connected with the pumping device 20, the other end of the air pipe is inserted into the pumping pipe 111 and extends into the inner cavity of the oil container 10, the diameter of the pumping pipe 111 is slightly smaller than that of the air pipe 28, but the air pipe 28 is a flexible pipe and can still be inserted into the pumping pipe 111, so that tight connection and air tightness between the air pipe 28 and the pumping pipe 111 are ensured, and the sealing performance of the oil container 10 is prevented from being affected due to poor sealing between the air pipe 28 and the pumping.

Further, in this embodiment, as shown in fig. 3, the top end of the oil container 10 is further provided with a connecting cover 12, the shape of the connecting cover 12 matches with the shape of the top end of the oil container 10, the connecting cover is sleeved on the top end of the oil container 10 and covers a part of the top end of the oil container 10 inside the connecting cover, the covered part mainly comprises a pumping pipe 111 and an upper fixing disc 112, the connecting cover and the oil container 10 can be connected together through clamping, fastening and screwing, in this embodiment, a preferable screwing manner is used, that is, an external thread is opened on the outer wall of the top end of the oil container 10, an internal thread matching with the external thread is opened on the inner wall of the connecting cover, the connecting cover and the oil container 10 are connected together through screwing, meanwhile, the connecting part of the connecting cover 12 and the oil container 10 further comprises an upper fixing disc 112 and a pumping pipe 111, the upper fixing disc 112 and the pumping pipe 111 are located between the connecting cover and the oil, the connecting cover is covered and contacted with the inner wall of the connecting cover, the connecting cover is also provided with a through hole 121, the diameter of the through hole 121 is the same as that of the pressure suction pipe 111, meanwhile, the position of the through hole 121 is overlapped with that of the pressure suction pipe 111, and the air pipe 28 can enter the pressure suction pipe 111 through the through hole 121.

Further, in this embodiment, the oil container further includes a hook rope 30, the hook rope 30 is composed of a hook 31 and a pull rope 32, the pull rope 32 is a rope whose length can be freely adjusted, one end of the pull rope 32 is connected with the hook 31, the other end of the pull rope 32 is connected with a connecting cover, a hanging buckle 122 is arranged on the connecting cover 12, in order to ensure that the oil container 10 can keep a relatively stable state in the whole sampling process, the number of the hanging buckles 122 is at least two, that is, the number of the corresponding pull ropes 32 is consistent with that of the hanging buckles 122, when the oil container 10 is used for sampling, the height of the oil container 10 is adjusted through the hook rope 30, specifically, the hook 31 is hung on the outer wall of the oil storage tank, the oil container 10 is placed into the oil storage tank, the height of the oil container 10 is adjusted by using the pull rope 32, the oil container 10 is adjusted to the depth required to be sampled and then the pull rope 32 is fixed, after sampling is finished, the oil container 10, in the whole operation process, the oil container 10 itself needs to be in a relatively stable state to avoid unstable gravity center of the oil container 10, especially, in the lifting process, the inside of the oil container 10 is filled with liquid at this time, the unstable gravity center can make the oil container 10 shake continuously when lifting, which can cause the liquid inside the oil container 10 to leak out, and meanwhile, the burden of the pull rope 32 is increased, therefore, at least two pull ropes 32 are needed to be connected with the oil container 10 to ensure the stability of the oil container 10, certainly, more pull ropes 32 can be arranged according to actual conditions, in the embodiment, two pull ropes 32 are preferably arranged, one ends of the two pull ropes 32 are connected to the hook 31, and the other ends of the two pull ropes are connected to the hanging buckle 122.

Further, in this embodiment, as shown in fig. 4 and 5, the oil inlet pipe 13 includes a connection end and an oil inlet end, the connection end is connected to the oil container 10, an oil pipe cover 134 is disposed on the oil inlet end, the oil pipe cover 134 can control the opening and closing of the oil inlet end, specifically, a fixing groove 133 is disposed on the periphery of the oil inlet end, the fixing groove 133 is disposed on the outer wall of the oil inlet pipe 13, when the oil pipe cover 134 is connected to the oil inlet end, the oil pipe cover 134 can be clamped in the fixing groove 133, that is, the length of the oil pipe cover 134 can be just clamped to the position of the fixing groove 133 when the oil pipe cover 134 is covered on the oil inlet end, a rotary groove 131 is disposed on the end surface of the oil inlet end, the rotary groove 131 can freely rotate back and forth on the end surface of the oil inlet end, an oil inlet opening 132 is disposed on the bottom of the rotary groove 131, a gap is disposed on the rotary groove 131, the gap is larger than the oil inlet opening 132, when, when the position of the notch on the rotary groove 131 is overlapped with the position of the oil inlet port 132, the rotary groove 131 is communicated with the oil inlet port 132, at this time, the oil inlet end is communicated with the oil container 10, the liquid to be taken can enter the oil container 10, when the position of the notch on the rotary groove 131 is staggered with the position of the oil inlet port 132, the rotary groove 131 is closed with the oil inlet port 132, the liquid to be taken cannot enter the oil container 10, the rotary groove 131 plays a role of a cover on the end surface of the oil inlet end, the rotary groove 131 can control the opening and closing of the oil inlet port 132, the oil pipe cover 134 is sleeved on the end surface of the oil inlet end, namely, the rotary groove 131 is covered, the inner folded edge 135 is arranged on the oil pipe cover 134, the inner folded edge 135 is matched with the fixing groove 133 to enable the oil pipe cover 134 to be tightly connected with the oil inlet end, the oil pipe cover 134 is further provided with the oil inlet butt joint 136, the oil pipe butt, the outstanding oil pipe lid 134 of one end of oil pipe butt joint, the other end can contact with revolving groove 131, it is concrete, the oil pipe butt joint is inserted in the breach on revolving groove 131, when oil pipe lid 134 rotates, the oil pipe butt joint can rotate along with oil pipe lid 134 together, the one end of oil pipe butt joint is inserted in revolving groove 131, therefore, revolving groove 131 also can rotate, the rotation in-process, when the position of breach and the position of oil feed opening 132 overlap on the revolving groove 131, oil feed butt joint 136 and oil feed opening 132 are linked together, make and treat that liquid can get into in the oil container 10. During sampling, the oil pipe cover 134 is rotated to enable the oil inlet pipe 13 to be communicated with the outside, the oil container 10 is placed into the oil storage tank, and after sampling is finished, the oil pipe cover 134 is rotated to close the oil inlet pipe 13.

Further, in an embodiment, as shown in fig. 6, the pressure pumping device 20 includes: the air pump comprises a rotating handle 21, a threaded rod 22, an air cylinder 23, a rotating box 25, a rotating head 24, a piston 26 and an air suction head 27, wherein the rotating handle 21 is connected with the threaded rod 22, the rotating handle 21 is in a handle-shaped form, the threaded rod 22 can be driven to rotate together through the rotation of the rotating handle 21, one end of the threaded rod 22 is connected with the rotating handle 21, the other end of the threaded rod 22 is connected with the rotating head 24, the rotating head 24 is clamped in the rotating box 25, when the threaded rod 22 rotates, the rotating head 24 can rotate in the rotating box 25 together in the rotating box 25, but the rotating box 25 can not rotate together with the rotating head 24, the rotating box 25 is connected with the piston 26, when the handle is rotated, the threaded rod 22 and the rotating head 24 move together, the rotating head 24 drives the rotating box 25 and the piston 26 to move in the air cylinder 23, the piston 26 is clamped in the air cylinder 23, the piston 26 is in close contact with the inner wall around the air cylinder, the rotary head 24, the rotary box 25 and a part of the threaded rod 22 are all positioned at the upper half part of the piston 26, the other part of the threaded rod 22 is positioned outside the air cylinder 23, the part of the threaded rod 22 connected with the air cylinder 23 is in threaded connection, specifically, the part of the air cylinder 23 connected with the threaded rod 22 is provided with threads, the threaded rod 22 is self-threaded, when the threaded rod 22 is rotated, the threaded rod 22 moves up and down by virtue of the threads between the air cylinder 23 and the air cylinder 22, the piston 26 moves in the air cylinder 23 during the movement of the threaded rod 22, the other part of the air cylinder 23 is an air gathering area, the pressure pumping device 20 is also provided with an air pumping head 27, the air pumping head 27 is arranged at the air gathering area, the air gathering in the air cylinder 23 can enter and exit the air cylinder 23 through the air pumping head 27, when the pressure pumping device 20 pumps air, the air in the oil container 10 is pumped into, when air is injected into the oil container 10, the piston 26 pushes the air in the air cylinder 23 to enter the oil container 10 through the air pipe 28, and meanwhile, the outer wall of the air cylinder 23 is also provided with scales, so that the sampling amount can be accurately controlled according to the scales when sampling.

Further, in this embodiment, the oil container 10 is further provided with a falling block 50 inside, the falling block 50 is specifically arranged at the bottom of the oil container 10, the oil port 40 is formed in the middle of the falling block 50, the oil port 40 is connected with the inner cavity of the oil container 10, the falling block 50 can accelerate the falling speed of the oil container 10, the oil container 10 can reach a sampling point faster with the help of the falling block 50 during sampling, and when the liquid to be sampled is crude oil, the crude oil is too viscous, and the oil container 10 cannot reach a deeper liquid layer during falling, so that the oil container 10 can reach the liquid layer to be reached by additionally arranging the falling block 50.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A petroleum liquid sampling device, comprising:

the oil container comprises a pumping device and an oil container, wherein the pumping device is communicated with the oil container, an oil port communicated with an inner cavity of the oil container is formed in the bottom of the oil container, and at least one oil inlet pipe communicated with the inner cavity of the oil container is arranged on the outer surface of the oil container;

the pressure pumping device is used for pumping air into the oil container so as to enable the liquid to be extracted to enter the oil container from the oil port and/or the oil inlet pipe, and is used for pressurizing air into the oil container so as to enable the sample in the oil container to be discharged from the oil port.

2. The sampling device of claim 1, wherein the oil container is an ellipsoid with a hollow interior, the pumping device is communicated with one end of the major axis of the ellipsoid, the oil port is formed in the other end of the major axis of the ellipsoid, and the oil inlet pipes are arranged on two sides of the minor axis of the ellipsoid.

3. The sampling device of claim 2, wherein the top end of the oil container is provided with a connecting assembly for communicating the pumping device with the oil container.

4. A sampling device as claimed in claim 3, wherein the connection assembly comprises: the oil container comprises a connecting pipe, an upper fixing disc and a lower fixing disc, wherein the upper fixing disc and the lower fixing disc are fixed by the connecting pipe, the lower fixing disc is located in the oil container, the upper fixing disc is located outside the oil container, the upper fixing disc and the lower fixing disc are connected through fastening bolts, one end of the connecting pipe penetrates through the upper fixing disc and the lower fixing disc and extends into an inner cavity of the oil container, and the other end of the connecting pipe is communicated with the pumping device.

5. The sampling device according to claim 4, wherein the connecting pipe comprises an air pipe and a pumping pipe inserted into and connected with the air pipe, wherein the pumping pipe is fixed on the outer wall of the oil container through the upper fixed disk and the lower fixed disk, one end of the air pipe is communicated with the pumping device, and the other end of the air pipe is communicated with the oil container through the pumping pipe.

6. The sampling device of claim 5, further comprising: and the connecting cover is matched with the top end of the oil container in shape, is connected with the top end of the oil container through clamping, threads or a fastener, and is provided with a pipe penetrating hole through which the connecting pipe can penetrate.

7. The sampling device of claim 6, further comprising: and the other end of the hook rope is connected with a hanging buckle arranged on the connecting cover.

8. The sampling device according to any one of claims 1 to 6, wherein the oil inlet tube comprises a connection end and an oil inlet end, wherein the connection end is connected to the oil container, and the oil inlet end is provided with an oil tube cap capable of controlling the opening or closing of the oil inlet end, wherein,

a fixed groove which is rotatably connected with the oil pipe cover is arranged on the periphery of the oil inlet end of the oil inlet pipe, a rotary groove is formed in the end face of the oil inlet end, and an oil inlet port is formed in the bottom of the rotary groove;

the oil pipe cover is provided with an inner folded edge matched with the fixing groove and an oil inlet butt joint capable of moving in the rotary groove, wherein when the oil pipe cover rotates, the oil inlet butt joint moves to the oil inlet through hole, the oil inlet through hole is opened, and when the oil inlet butt joint moves away from the oil inlet through hole, the oil inlet through hole is closed.

9. A sampling device according to any one of claims 1 to 6 wherein the pumping means comprises: change handle, threaded rod, inflator, change box, turn round, piston and head of bleeding, wherein, the one end of threaded rod with change the connection, the other end of threaded rod with the turn round is connected, the joint of turning round is in the turn box, change the box with the piston is connected, the threaded rod partly with turn round the box and the piston all is located one side in the inflator, the piston joint is in the inflator, the inflator with the position that the threaded rod is connected be equipped with the screw thread that the threaded rod matches, the threaded rod with inflator threaded connection, the one end of head of bleeding with the opposite side intercommunication of inflator, the other end of head of bleeding with the trachea is connected.

10. The sampling device of any one of claims 1 to 6, wherein the bottom end of the oil container is provided with a drop block, and the oil port is opened on the drop block.

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