CN114624061A

CN114624061A - Oil field is with crude oil sampler that has accurate collection function of batch

Info

Publication number: CN114624061A
Application number: CN202210221249.XA
Authority: CN
Inventors: 桑军兰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-06-14

Abstract

The invention relates to the field of sampling equipment for oil fields, in particular to a crude oil sampler with a batch accurate acquisition function for oil fields. The technical problem of the invention is that: the process of manual sampling can not guarantee that the sampling amount is the same every time, and can not guarantee accurate and uniform sampling time, and the sampling process in low-temperature areas is difficult. A crude oil sampler with batch accurate acquisition function for oil fields comprises a pressure oil inlet part, an oil storage transfer part, a limiting component and the like; the left part of the oil storage transfer component is positioned in the pressure oil inlet component and is connected with the pressure oil inlet component through a bolt, and the limiting component is arranged in the oil storage transfer component in a sliding mode. The oil storage transfer component is matched with the oil storage transfer component to control the oil inlet speed of the oil storage transfer component, and the movement of the oil storage transfer component is limited through the limiting component.

Description

Oil field is with crude oil sampler that has accurate collection function of batch

Technical Field

The invention relates to the field of sampling equipment for oil fields, in particular to a crude oil sampler with a batch accurate acquisition function for oil fields.

Background

Crude oil is taken as an important chemical material and strategic reserve material, the related field of the crude oil is always treated by all countries in the world, and China needs many oilfield exploitation auxiliary equipment in the exploitation of various oilfields in all regions, wherein the detection of the water content, the silt content and other components of the crude oil needs to be carried out frequently, so that the crude oil which is just exploited needs to be sampled and detected at an oil exploitation well opening of the crude oil.

Present crude oil exploitation well head sample is many to go on through the manual work, and operating personnel is through handheld sampling tube after preparing earlier stage, 1/3 to 2/3 department at the beam-pumping unit upward movement process, open the sample valve of well head department and take a sample, and this process of repetition is taken a sample many times, then send the sample crude oil of mixing to examine, and its shortcoming is: the volume that at first the manual sampling's process can't guarantee to take a sample at every turn is the same, and can't guarantee accurate unified sampling time, so can lead to mixing the not complete even of sample, secondly take a sample in low temperature area, its sample valve is frozen easily, and the sampling process is difficult.

In order to solve the technical problems, a piston type crude oil sampler with a batch accurate collection function for an oil field is developed.

Disclosure of Invention

In order to overcome the defects that the manual sampling process can not ensure the same sampling amount every time and can not ensure accurate and uniform sampling time, and the sampling process is difficult because a sampling valve is frozen when sampling in a low-temperature area, the technical problem of the invention is as follows: provides a piston type crude oil sampler with batch accurate acquisition function for oil fields.

A crude oil sampler with batch accurate acquisition function for oil fields comprises a protective shell, a display control platform, a control module, a servo motor, a worm, an oil sealing cylinder, a limiting cylinder, a pressure oil inlet part, an oil storage transfer part, a limiting component, a worm wheel, an oil outlet, a fixed seat and a sample storage bottle, wherein the protective shell is fixedly connected with a wellhead oil conveying pipe, the lower surface of the protective shell is provided with a mounting port, the display control platform is arranged at the upper part of the protective shell, the control module is fixedly connected with the inner lower surface of the protective shell, the control module is electrically connected with the display control platform, the servo motor is arranged at the lower surface in the protective shell, the servo motor is positioned at the right side of the control module, the servo motor is electrically connected with the control module, the output shaft end of the servo motor is fixedly connected with the worm, the oil sealing cylinder penetrates through the protective shell and is fixedly connected with the wellhead oil conveying pipe, the lower surface of the oil sealing cylinder is provided with a mounting hole, the limiting cylinder penetrates through and is fixedly connected with the rear part of the right side surface of the protective shell, the oil sealing cylinder is internally and slidably provided with a pressure oil inlet component, the pressure oil inlet component is electrically connected with the control module, the limiting cylinder is internally and slidably provided with an oil storage transfer component, the left part of the oil storage transfer component is positioned in the pressure oil inlet component and is connected with the pressure oil inlet component through a bolt, the pressure oil inlet component is used for sensing the pressure of a wellhead oil conveying pipe and controlling crude oil in the wellhead oil conveying pipe to enter the oil storage transfer component, a limiting component is slidably arranged in the oil storage transfer component and is fixedly connected with the limiting cylinder, the limiting component is electrically connected with the control module and is used for limiting sliding of the pressure oil inlet component, a worm wheel is rotatably arranged at the left end of the limiting cylinder, a worm wheel is sleeved outside the pressure oil inlet component, the inner surface of the worm wheel is provided with internal threads, the worm wheel is meshed with a worm, and an oil outlet is fixedly connected in a rotation hole of the oil sealing cylinder, oil-out material is oleophobic material, and fixing base fixed connection is in the internal lower surface of protective housing, and the fixing base is located the top of protection casing installing port, and sample storage bottle upper portion is through the installing port and the threaded connection of protection casing in the fixing base, sample storage bottle and oil-out intercommunication.

Further explain, pressure oil feed part is including an oil feed section of thick bamboo, the piece of sealing oil, first U-shaped sealing ring and pressure shutoff subassembly, an oil feed section of thick bamboo sliding connection is in a section of thick bamboo of sealing oil, the first oil through hole of a plurality of has evenly been seted up in an oil feed section of thick bamboo left part, the first oil through hole of a plurality of divides three circles to distribute, an oil block has been cup jointed to an oil feed section of thick bamboo left end rigid coupling, the chamfer has been seted up to an oil block left part right side, oil block left part closely cooperates with the inner wall of well head defeated oil pipe, it is provided with pressure shutoff subassembly to slide in the oil block, it has first U-shaped sealing ring to inlay on the oil block right flank.

Further, the pressure plugging component comprises a pressure sensing slide block, connecting rods, a first spring, an oil blocking block, a first pressure sensor and a second spring, the pressure sensing slide block is arranged in the oil sealing block in a sliding mode, the four connecting rods are respectively fixedly connected with the right side face of the pressure sensing slide block, the four connecting rods respectively penetrate through the oil sealing block, the first spring is sleeved on the connecting rods, two ends of the first spring are fixedly connected with the oil sealing block and the pressure sensing slide block respectively, the right end of each of the four connecting rods is fixedly connected with the oil blocking block, a plurality of through holes are formed in the left side face and the right side face of the oil blocking block in a penetrating mode, the first pressure sensor is embedded in the right side face of the oil sealing block and is electrically connected with the control module, and the second spring is fixedly connected between the pressure sensing slide block and the first pressure sensor.

It is further explained that the oil storage shifts the part including the oil storage section of thick bamboo, the second U-shaped sealing ring, the subassembly is got to third spring and slip, oil storage section of thick bamboo left part passes through bolt and oil feed section of thick bamboo rigid coupling, oil storage section of thick bamboo right part is provided with the external screw thread, oil storage section of thick bamboo right part slides and sets up in spacing drum, the external screw thread of oil storage section of thick bamboo and the interior screw-thread fit of worm wheel, a plurality of second oil through hole has been seted up to oil storage section of thick bamboo left part, a plurality of second oil through hole divides the three rings to distribute, the inside protrusion in oil storage section of thick bamboo middle part is provided with the spacing ring, the spacing ring left surface of oil storage section of thick bamboo has inlayed the second U-shaped sealing ring, oil storage section of thick bamboo left part slides and is provided with the subassembly of getting of slip, right part and spacing subassembly sliding connection in the oil storage section of thick bamboo, the rigid coupling has the third spring between subassembly of getting in the slip.

Further, the first oil through hole and the second oil through hole are obliquely arranged from right to left, and the three circles of the first oil through holes are correspondingly communicated with the three circles of the second oil through holes respectively.

Further explaining, the sliding oil taking assembly comprises an oil pushing piston, a metal sealing ring and an anticorrosive rubber sealing ring, the oil pushing piston is connected to the left part of the oil storage cylinder in a sliding mode, the outer peripheral face of the oil pushing piston is tightly attached to the inner side wall of the oil storage cylinder, two sealing grooves are formed in the outer peripheral face of the oil pushing piston, the metal sealing ring is sleeved in one sealing groove of the oil pushing piston, the anticorrosive rubber sealing ring is sleeved in the other sealing groove of the oil pushing piston, the right side face of the oil pushing piston is fixedly connected with a third spring, and a plurality of pressure balance through holes are formed in the outer side-in circumferential direction of the left part of the oil pushing piston.

Further, the right side face of the oil blocking block is arranged in a right arc-shaped protruding mode, the left side face of the oil pushing piston is arranged in a right arc-shaped recessed mode, the radian of the right side face of the oil blocking block is identical to that of the left side face of the oil pushing piston, and the oil blocking block is in close fit with the oil pushing piston when in contact.

Further, the metal sealing ring is sleeved in the sealing groove on the left side of the oil pushing piston, and the anticorrosive rubber sealing ring is sleeved in the sealing groove on the right side of the oil pushing piston.

Further, the limiting assembly comprises a stepped limiting cylinder, a limiting sliding cylinder, a limiting push rod, limiting slide blocks and a second pressure sensor, the outer surface of the right part of the stepped limiting cylinder is fixedly connected with the right part of the limiting cylinder, the part with the small diameter of the stepped limiting cylinder protrudes outwards and is provided with a plurality of limiting blocks, the right side surface of the stepped limiting cylinder is provided with an annular T-shaped chute, the left part in the stepped limiting cylinder is fixedly connected with the limiting sliding cylinder, the inner side surface of the limiting sliding cylinder is vertically and symmetrically provided with the limiting chutes, the limiting slide cylinder is internally and internally provided with the limiting push rods in a sliding manner, the right part of the limiting push rods is provided with external threads, the left ends of the limiting push rods are fixedly connected with a third spring, the limiting slide blocks are vertically and symmetrically provided with two limiting slide blocks, the two limiting slide blocks are respectively and fixedly connected with the upper side and the lower side of the middle part of the limiting push rods, and the two limiting slide blocks are respectively and slidably connected in the two limiting chutes of the limiting sliding cylinder, the second pressure sensor is embedded on the left side face of the part with the large diameter of the stepped limiting cylinder and is electrically connected with the control module.

Further explain, still including spacing piece of revolving, twist grip and T shape slider, spacing piece of revolving rotates to be connected at the spacing section of thick bamboo right part of stairstepping, spacing piece axial of revolving has seted up the blind hole from left to right, spacing blind hole inside wall of revolving has seted up the internal thread, spacing internal thread and the external screw thread fit of spacing push rod of revolving, spacing piece right-hand member rigid coupling of revolving has twist grip, rotatory handle left surface circumference rigid coupling has a plurality of T shape slider, a plurality of T shape slider respectively with the T shape spout sliding connection of the spacing section of thick bamboo of stairstepping.

The beneficial effects are that: the device automatically collects crude oil by matching the display control platform and the control module, the pressure oil inlet component senses the pressure of the crude oil in the oil delivery pipe of the wellhead, the control module controls the time point when the device enters and exits the oil delivery pipe of the wellhead, so that the crude oil in the oil pumping middle section of the oil pumping unit is sampled, the pressure oil inlet component is matched with the oil storage transfer component to control the oil inlet speed of the oil storage transfer component, the limiting component limits the movement of the oil storage transfer component, and the limiting rotary block is matched with the rotary handle to adjust the limiting component, so that the auxiliary discharge of the crude oil in a low-temperature state or high-concentration state is realized.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a cross-sectional view of a three-dimensional structure of the present invention.

Fig. 3 is a sectional view showing a part of the enlarged perspective structure of the present invention.

Fig. 4 is a cross-sectional view of a first three-dimensional structure of the present invention.

Fig. 5 is a cross-sectional view of a second three-dimensional structure of the present invention.

Fig. 6 is a cross-sectional view of a third three-dimensional structure according to the present invention.

Fig. 7 is a sectional view of a three-dimensional structure of the oil pressure inlet part of the invention.

Fig. 8 is a partial perspective view of the oil reservoir transfer unit of the present invention.

Fig. 9 is a schematic partial perspective view of the spacing assembly of the present invention.

In the above drawings: 1-a protective shell, 101-a wellhead oil conveying pipe, 2-a display control platform, 3-a control module, 4-a servo motor, 5-a worm, 6-an oil cylinder, 7-a limiting cylinder, 8-a pressure oil inlet component, 801-an oil inlet cylinder, 801a first oil through hole, 802-an oil sealing block, 803-a pressure sensing sliding block, 804-a connecting rod, 805-a first spring, 806-an oil blocking block, 807-a first pressure sensor, 808-a second spring, 809-a first U-shaped sealing ring, 9-an oil storage transfer component, 901-an oil cylinder, 901a second oil through hole, 902-a second U-shaped sealing ring, 903-an oil pushing piston, 904-a third spring, 905-a metal sealing ring and 906-an anti-corrosion rubber sealing ring, 907-pressure balance through hole, 10-limit component, 1001-stepped limit cylinder, 1002-limit sliding cylinder, 1003-limit push rod, 1004-limit sliding block, 1005-second pressure sensor, 11-worm wheel, 12-oil outlet, 13-fixing seat, 14-sample storage bottle, 15-limit rotary block, 16-rotary handle and 17-T-shaped sliding block.

Detailed Description

The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Example 1

A crude oil sampler with batch accurate collection function for oil fields is disclosed, as shown in figures 1-4, and comprises a protective shell 1, a display control platform 2, a control module 3, a servo motor 4, a worm 5, an oil sealing cylinder 6, a limiting cylinder 7, a pressure oil inlet part 8, an oil storage transfer part 9, a limiting component 10, a worm wheel 11, an oil outlet 12, a fixed seat 13 and a sample storage bottle 14, wherein the protective shell 1 is fixedly connected to a wellhead oil pipeline 101, the lower surface of the protective shell 1 is provided with a mounting port, the display control platform 2 is arranged on the upper part of the protective shell 1, the display control platform 2 is used for displaying and setting sampling times and opening and closing of the device, the control module 3 is fixedly connected to the inner lower surface of the protective shell 1, the control module 3 is connected with an electric appliance of the display control platform 2, the servo motor 4 is arranged on the inner lower surface of the protective shell 1, the servo motor 4 is positioned on the right side of the control module 3, a servo motor 4 is electrically connected with a control module 3, an output shaft end of the servo motor 4 is fixedly connected with a worm 5, an oil sealing cylinder 6 penetrates through a protective shell 1 and is welded on a wellhead oil conveying pipe 101, the lower surface of the oil sealing cylinder 6 is provided with a mounting hole, the oil sealing cylinder 6 is used for being matched with the plugging of a pressure oil inlet component 8 in the moving process, a limiting cylinder 7 penetrates and is fixedly connected with the rear part of the right side surface of the protective shell 1, the pressure oil inlet component 8 is arranged in the oil sealing cylinder 6 in a sliding mode, the pressure oil inlet component 8 is electrically connected with the control module 3, an oil storage transfer component 9 is arranged in the limiting cylinder 7 in a sliding mode, the left part of the oil storage transfer component 9 is positioned in the pressure oil inlet component 8 and is connected with the pressure oil inlet component through a bolt, the pressure oil inlet component 8 is used for sensing the pressure of the wellhead oil conveying pipe 101 and controlling the crude oil in the wellhead oil conveying pipe 101 to enter the oil storage transfer component 9, and the limiting component 10 is arranged in the oil storage transfer component 9 in a sliding mode,

spacing subassembly

10 and 7 rigid couplings of spacing drum, spacing subassembly 10 is connected with 3 electrical apparatus of control module, spacing subassembly 10 is used for the spacing slip of pressure oil feed part 8, worm wheel 11 rotates and sets up in 7 left ends of spacing drum, the worm wheel 11 cover is established in the 8 outsides of pressure oil feed part, the internal thread has been seted up to 11 internal surfaces of worm wheel, worm wheel 11 meshes with worm 5 mutually, the downthehole rigid coupling of ann commentaries on classics of sealing oil cylinder 6 has oil-out 12, oil-out 12 material is oleophobic material, fixing base 13 fixed connection is lower surface in protection casing 1, fixing base 13 is located the top of protection casing 1 installing port, 14 upper portions of sample storage bottle are through the installing port and the threaded connection of protection casing 1 in fixing base 13, sample storage bottle 14 and oil-out 12 intercommunication.

When an operator uses the device to sample crude oil from the oil outlet 12 of the oil well, firstly, a clean sample storage bottle 14 is installed in the fixing seat 13 by screwing, at the moment, the upper end of the sample storage bottle 14 is tightly attached to the oil outlet 12, then, the operator controls the display control platform 2 to ensure that the device samples crude oil which is just pumped out from the wellhead oil pipeline 101 when the oil pumping unit upwards pumps crude oil, the sampling process of the device samples 1/3 in the middle of the upward movement total stroke of the oil pumping unit, the pressure in the wellhead oil pipeline 101 can be increased when the oil pumping unit upwards pumps oil, firstly, the operator starts the device through the display control platform 2, when the pressure oil inlet part 8 senses the pressure change in the wellhead oil pipeline 101, the pressure oil inlet part 8 transmits a pressure signal to the control module 3, and the control module 3 controls the servo motor 4 to rotate forwards, the servo motor 4 drives a worm wheel 11 to rotate through a worm 5, the worm wheel 11 drives an oil storage transfer part 9 to rotate, a pressure oil inlet part 8 and the oil storage transfer part 9 are inserted into a wellhead oil pipeline 101 under the limit of a limit component 10, the servo motor 4 rotates forwards for a certain time, a control module 3 controls the oil storage transfer part to be closed, the pressure oil inlet part 8 is matched with and controls the speed of crude oil entering the oil storage transfer part 9, after the oil storage transfer part 9 finishes sampling, the pressure in the pressure oil inlet part 8 is balanced, the control module 3 of the pressure oil inlet part 8 transmits a pressure signal to the control module 3, the control module 3 controls the servo motor 4 to rotate backwards, the servo motor 4 drives the pressure oil inlet part 8 and the oil storage transfer part 9 to reset through the worm 5 and the worm wheel 11, the oil storage transfer part 9 is matched with an oil outlet 12 in the resetting process, and the crude oil in the oil storage transfer part 9 starts to enter a sample storage bottle 14, when oil storage transfer unit 9 removed to the right-hand member, spacing subassembly 10 response and to control module 3 transmission pressure signal, control module 3 control servo motor 4 stops the reversal, oil storage transfer unit 9 is inside resets gradually, make during the whole sample crude oil flows into sample storage bottle 14, with this realization single crude oil sample, operating personnel sets for the sample number of times through control display control platform 2, through the control of control module 3 above-mentioned single sample process of repetition, realize carrying out the many batches of samples in the middle section of pumping to the crude oil of well head oil pipeline 101, after many batches of samples are accomplished, operating personnel takes off storage bottle 14 and inspects.

Example 2

On the basis of embodiment 1, as shown in fig. 2, 5 and 6, the pressure oil inlet part 8 includes an oil inlet cylinder 801, an oil sealing block 802, a first U-shaped sealing ring 809 and a pressure sealing assembly, the oil inlet cylinder 801 is slidably connected in the oil sealing cylinder 6, a plurality of first oil through holes 801a are uniformly formed in the left portion of the oil inlet cylinder 801, the plurality of first oil through holes 801a are distributed in three circles, the oil sealing block 802 is fixedly connected to the left end of the oil inlet cylinder 801, a right chamfer is formed in the left portion of the oil sealing block 802, the left portion of the oil sealing block 802 is tightly matched with the inner wall of the wellhead oil pipeline 101, the pressure sealing assembly is slidably arranged in the oil sealing block 802, and the first U-shaped sealing ring 809 is embedded on the right side surface of the oil sealing block 802.

As shown in fig. 2 and fig. 5-7, the pressure-sensitive sealing assembly includes a pressure-sensitive slider 803, a connecting rod 804, a first spring 805, an oil-blocking block 806, a first pressure sensor 807 and a second spring 808, the pressure-sensitive slider 803 is slidably disposed in the oil-blocking block 802, four connecting rods 804 are disposed, four connecting rods 804 are respectively and fixedly connected to the right side of the pressure-sensitive slider 803, the right ends of the four connecting rods 804 respectively penetrate through the oil-blocking block 802, the connecting rod 804 is sleeved with the first spring 805, two ends of the first spring 805 are respectively and fixedly connected to the oil-blocking block 802 and the pressure-sensitive slider 803, the right ends of the four connecting rods 804 are fixedly connected to the oil-blocking block 806, the right side of the oil-blocking block 806 is in a right-arc-shaped protruding arrangement, a plurality of through holes are formed in the oil-blocking block 806 in a left and right direction, the through holes of the oil-blocking block 806 are used for pressure balancing, the first pressure sensor 807 is embedded in the right side of the oil-blocking block 802, the first pressure sensor 807 is electrically connected to the control module 3, the first pressure sensor 807 is used for sensing pressure change in the wellhead oil pipeline 101, and a second spring 808 is fixedly connected between the pressure sensing sliding block 803 and the first pressure sensor 807.

As shown in fig. 4-6 and 8, the oil storage transfer component 9 includes an oil storage cylinder 901, a second U-shaped sealing ring 902, a third spring 904 and a sliding oil-taking assembly, the left portion of the oil storage cylinder 901 is fixedly connected with the oil inlet cylinder 801 through a bolt, in the long-term use of the device, when the oil storage cylinder 901 needs to be maintained and replaced, the bolt connection is more convenient, the right portion of the oil storage cylinder 901 is provided with an external thread, the right portion of the oil storage cylinder 901 is slidably arranged in the limiting cylinder 7, the external thread of the oil storage cylinder 901 is matched with the internal thread of the worm wheel 11, the left portion of the oil storage cylinder 901 is provided with a plurality of second oil through holes 901a, the plurality of second oil through holes 901a are distributed in three circles, the first oil through holes 801a and the second oil through holes 901a are obliquely arranged from right to left, the three circles of first oil through holes 801a are respectively correspondingly communicated with the three circles of second oil through holes 901a, the middle portion of the oil storage cylinder 901 protrudes inwards to be provided with a limiting ring, the second U-shaped sealing ring 902 is embedded in the left side face of the limiting ring of the oil storage cylinder 901, the sliding oil taking assembly is arranged on the left portion of the oil storage cylinder 901 in a sliding mode, the right portion in the oil storage cylinder 901 is connected with the limiting assembly 10 in a sliding mode, a third spring 904 is fixedly connected between the sliding oil taking assembly and the limiting assembly 10, and the first U-shaped sealing ring 809 is used for sealing between the oil inlet cylinder 801 and the oil storage cylinder 901.

As shown in fig. 7 and 8, the sliding oil taking assembly includes an oil pushing piston 903, a metal sealing ring 905 and an anti-corrosion rubber sealing ring 906, the oil pushing piston 903 is slidably connected to the left portion of the oil storage cylinder 901, the outer peripheral surface of the oil pushing piston 903 is tightly attached to the inner side wall of the oil storage cylinder 901, the left side surface of the oil pushing piston 903 is in a rightward arc-shaped concave configuration, the right side surface of the oil blocking block 806 is in the same radian as the left side surface of the oil pushing piston 903, two sealing grooves are formed in the outer peripheral surface of the oil pushing piston 903, the metal sealing ring 905 is sleeved in the sealing groove on the left side of the oil pushing piston 903, the anti-corrosion rubber sealing ring 906 is sleeved in the sealing groove on the right side of the oil pushing piston 903, the oil blocking block 806 is tightly fitted with the oil pushing piston 903 when contacting with the oil pushing piston 903, the two are tightly attached to prevent crude oil from being left, the pressure of the crude oil is dispersed around by the concave oil pushing piston 903, so that the outer peripheral wall of the oil pushing piston 903 is closer to the inner wall 901 of the oil storage cylinder, the right side surface of the oil pushing piston 903 is fixedly connected with a third spring 904, the left part of the oil pushing piston 903 is provided with a plurality of pressure balance through holes 907 from outside to inside in the circumferential direction, the oil blocking block 806 and the oil pushing piston 903 are arranged in a protruding mode and matched with each other, the pressure contact area of the crude oil and the oil pushing piston 903 is increased, the pressure balance through holes 907 on the oil pushing piston 903 are matched with the oil blocking block 806, the contact area of the crude oil pressure and the oil blocking block 806 is increased, the crude oil pressure and the oil blocking block 806 are conveniently separated through the pressure of the crude oil, the outer peripheral wall of the left part of the oil pushing piston 903 is in an outward expansion state under the pushing of the crude oil pressure, the metal sealing ring 905 on the left side is closer to a depression, the metal sealing ring is more tightly attached between the oil pushing piston 903 and an oil storage cylinder 901, the sealing effect is improved, the oil pushing piston 903 is kept to move smoothly in the oil storage cylinder, the right side rubber sealing ring 901 is used for matching with the metal anti-corrosion sealing ring 905, the effect of preventing the flow of the crude oil to the right on the oil pushing piston 903 is further enhanced.

As shown in fig. 5, 6 and 9, the limiting component 10 includes a stepped limiting cylinder 1001, a limiting sliding cylinder 1002, a limiting push rod 1003, a limiting slide block 1004 and a second pressure sensor 1005, the outer surface of the right portion of the stepped limiting cylinder 1001 is fixedly connected to the right portion of the limiting cylinder 7, a plurality of limiting blocks are arranged on the thin portion of the stepped limiting cylinder 1001 in an outward protruding manner, the stepped limiting cylinder 1001 is used for limiting the oil storage cylinder 901, an annular T-shaped chute is arranged on the right side surface of the stepped limiting cylinder 1001, the limiting sliding cylinder 1001 is fixedly connected to the left portion of the stepped limiting cylinder 1001, the limiting sliding cylinder 1002 is vertically symmetrically arranged on the inner side surface of the limiting sliding cylinder 1002, the limiting push rod 1003 is slidably arranged in the limiting sliding cylinder 1002, an external thread is arranged on the right portion of the limiting push rod 1003, the limiting sliding cylinder 1002 is used for limiting the sliding of the limiting push rod 1003, the left end of the limiting push rod 1003 is fixedly connected to a third spring 904, two limiting slide blocks 1004 are vertically symmetrically arranged, two limiting slide blocks 1004 are fixedly connected with the upper side and the lower side of the middle part of the limiting push rod 1003 respectively, the two limiting slide blocks 1004 are slidably connected in two limiting slide grooves of the limiting slide cylinder 1002 respectively, a second pressure sensor 1005 is embedded on the left side surface of the part with the large diameter of the stepped limiting cylinder 1001, and the second pressure sensor 1005 is electrically connected with the control module 3.

The pressure oil inlet part 8 senses the crude oil pressure of the wellhead oil pipeline 101, transmits a pressure signal to the control module 3, controls the time point when the device enters and exits the wellhead oil pipeline 101, so as to realize sampling of crude oil in the middle pumping section of the pumping unit, and the pressure oil inlet part 8 is matched with the oil storage transfer part 9, so as to realize control of the oil inlet speed of the oil storage transfer part 9, before the crude oil begins to sample, when the pressure in the wellhead oil pipeline 101 increases, the left part of the oil sealing block 802 is tightly matched with the wellhead oil pipeline 101, the pressure sensing slide block 803 moves rightwards under the pressure of the crude oil, the second spring 808 is compressed, the pressure sensed by the first pressure sensor 807 changes, the first pressure sensor 807 sends a pressure electric signal to the control module 3, so as to realize control of the time point when the device enters the wellhead oil pipeline 101, the pressure sensing slide block 803 moves rightwards while driving the oil blocking block 806 to move rightwards through the connecting rod 804, when the first spring 805 is compressed and the oil blocking block 806 moves rightward, the outer peripheral surface thereof is gradually fitted with three circles of the second oil passing holes 901a to be blocked, when the pressure inside the wellhead oil delivery pipe 101 is high, the oil passing area of the second oil passing hole 901a communicating with the oil storage cylinder 901 is smaller, when the pressure inside the wellhead oil pipeline 101 is small, the oil passing area of the second oil passing hole 901a communicating with the oil storage cylinder 901 is larger, because the flow rate of crude oil entering the oil storage cylinder 901 is increased when the pressure is high, the oil inlet amount in the oil storage cylinder 901 is adjusted and controlled by adjusting the oil passing area, the first oil passing hole 801a and the second oil passing hole 901a which are obliquely arranged, the auxiliary crude oil enters the oil storage cylinder 901 after contacting with the crude oil, the crude oil is prevented from directly flowing out from one side after entering the oil storage cylinder 901 from the first oil through hole 801a and the second oil through hole 901a on the other side, and the second oil passing hole 901a arranged obliquely leaves a fitting distance for the oil blocking block 806 at the left end of the oil storage cylinder 901.

The servo motor 4 stops after rotating forward for a certain time, under the driving of the worm wheel 11, the worm wheel 11 pushes the oil storage cylinder 901 to be inserted into the wellhead oil pipeline 101, the pressure oil inlet component 8, the oil pushing piston 903 and parts thereon move together with the oil storage cylinder 901, the third spring 904 gradually extends from an initial compression state to a stretching state, the oil inlet cylinder 801 and the oil storage cylinder 901 are inserted into the wellhead oil pipeline 101 to be contacted with crude oil, the crude oil enters the oil storage cylinder 901 through the first oil through hole 801a and the second oil through hole 901a, part of the second oil through hole 901a is blocked by the oil blocking block 806 and can not be fed, because the oil blocking area of the oil blocking block 806 is fixed, part of the second oil through hole 901a on the left side is not blocked, the crude oil entering between the oil blocking block 806 and the oil sealing block 802 from the part of the second oil through hole 901a passes through the through hole of the oil blocking block 806 and enters the oil storage cylinder 901, and the through hole of the oil blocking block 806 is used for balancing pressure, when the oil blocking block 806 is attached to the oil pushing piston 903, the oil blocking block 806 is separated from the oil pushing piston 903 by the pressure of crude oil, meanwhile, the pressure balance through hole 907 is communicated with the second oil through hole 901a which is not blocked at the right side, when the crude oil just starts to enter the oil storage cylinder 901 through the second oil through hole 901a which is not blocked, the crude oil firstly separates the oil blocking block 806 from the oil pushing piston 903 through the pressure balance through hole 907, then the oil pushing piston 903 is pushed to move rightwards by the crude oil, the third spring 904 moves in a stretching state in the front half stroke of the oil pushing piston 903 and plays a role in tension, the third spring 904 is gradually compressed in the back half stroke of the oil pushing piston 903 and plays a role in buffering, the crude oil is stored between the left oil blocking block 806 and the oil pushing piston 903 in the oil storage cylinder 901, when the oil pushing piston 903 moves rightwards to be contacted with a limit ring of the oil storage cylinder, the right side surface of the oil pushing piston 903 is tightly contacted with the second U-shaped seal ring 902, so as to prevent the crude oil from entering the right part of the oil storage cylinder 901, so far, the oil inlet cylinder 801 and the oil storage cylinder 901 are inserted into the wellhead oil pipeline 101, and sampling is completed.

After the crude oil sampling process of the oil storage cylinder 901 is completed, the internal pressure of the oil storage cylinder 901 is the same as the pressure in the wellhead oil pipeline 101, at this time, the pressure sensing slide block 803 is pushed by the first spring 805 to move leftwards, the pressure sensing slide block 803 drives the oil blocking block 806 to move leftwards through the connecting rod 804 to be attached to the oil sealing block 802, the oil storage amount in the oil storage cylinder 901 reaches the maximum, so that the sampling amount of the oil storage cylinder 901 in each sampling process is fixed, after the elastic force change of the second spring 808 is sensed by the first pressure sensor 807, the first pressure sensor 807 sends a pressure electric signal to the control module 3, the control module 3 controls the servo motor 4 to rotate backwards, the worm wheel 11 controls the oil storage cylinder 901 to drive the pressure oil inlet component 8 and parts inside to reset rightwards, the right end of the oil storage cylinder 901 is contacted with the second pressure sensor 1005, and the second pressure sensor 1005 sends a pressure electric signal to the control module 3, the control module 3 controls the servo motor 4 to stop rotating, the stepped limiting cylinder 1001 always limits the oil storage cylinder 901 in the process of moving the oil storage cylinder 901 left and right, so that the oil storage cylinder 901 is prevented from rotating, the oil sealing block 802 is prevented from being tightly matched with the wellhead oil pipeline 101, the left end of the limiting push rod 1003 limits the third spring 904, the compression and stretching state of the third spring 904 is matched with the movement of the oil pushing piston 903, the oil inlet process of the oil storage cylinder 901 is assisted, the third spring 904 is always compressed in the rightward resetting process of the oil storage cylinder 901, after the rightmost second oil through hole 901a is matched with the oil outlet 12, under the pushing of the third spring 904, the crude oil in the oil storage cylinder 901 flows into the sample storage bottle 14 from the lower second oil through hole 901a, the third spring 904 accelerates the process of the crude oil entering the sample storage bottle 14, under the limiting of the limiting slide block 1004, relative rotation can not be produced between spacing push rod 1003 and the spacing sliding barrel 1002, and then make through third spring 904 push away oily piston 903 avoid because of taking place the crude oil that the rotation leads to reveal at the in-process that removes, push away oily piston 903 move left under the promotion of third spring 904 to with hinder oily piece 806 and closely laminate, make all crude oils of sampling in the oil storage barrel 901 all get into sample storage bottle 14.

Example 3

On embodiment 2's basis, as shown in fig. 6, still including spacing piece 15 of revolving, twist grip 16 and T shape slider 17, spacing piece 15 of revolving rotates to be connected at the spacing section of thick bamboo 1001 right part of stairstepping, spacing 15 axial of revolving has seted up the blind hole from left to right, spacing blind hole inside wall of revolving piece 15 is seted up there is the internal thread, spacing internal thread and the external screw thread cooperation of spacing push rod 1003 of revolving piece 15, spacing 15 right-hand member welding of revolving piece has twist grip 16, the welding of twist grip 16 left surface circumference has a plurality of T shape slider 17, a plurality of T shape slider 17 respectively with the T shape spout sliding connection of stairstepping spacing section of thick bamboo 1001.

When thick crude oil is sampled or the sampling device works in severe cold at low temperature, due to poor flowability of the crude oil, the elasticity of the third spring 904 is not enough to support the moving process of all the oil pushing pistons 903, in order to avoid the crude oil from being retained in the oil storage cylinder 901 after sampling, the rotating handle 16 which is manually operated is arranged, at the moment, when the wellhead oil conveying pipe 101 is sampled, an operator operates the display control platform 2 to perform single sampling operation, after each single sampling is completed, the operator rotates the rotating handle 16 through positive rotation, the rotating handle 16 drives the limiting rotary block 15 to rotate positively under the limiting of the T-shaped slide block 17, the limiting rotary block 15 drives the limiting push rod 1003 to move leftwards under the limiting of the limiting slide block 1004, the limiting push rod 1003 moves leftwards to compress the third spring 904, the third spring 904 pushes the oil pushing piston 903 to contact with the oil blocking block 806 leftwards, so as to empty all the crude oil in the oil storage cylinder 901, in crude oil sampling and the supplementary crude oil exhaust in-process twist grip 16 whole journey can not contact with crude oil, consequently can not appear because of the twist grip 16 that the low temperature leads to from the inside unable pivoted condition of freeze, after oil storage section of thick bamboo 901 evacuation crude oil, operating personnel reversal twist grip 16 resets spacing push rod 1003, then controls display control platform 2 and carries out the sampling operation next time.

It should be understood that the above description is for exemplary purposes only and is not meant to limit the present invention. Those skilled in the art will appreciate that variations of the present invention are intended to be included within the scope of the claims herein.

Claims

1. The utility model provides an oil field is with crude oil sampler that has accurate collection function of batch, including protection casing (1), display control platform (2), control module (3), servo motor (4), worm (5) and worm wheel (11), characterized by: the oil-sealed oil-well device is characterized by further comprising an oil sealing cylinder (6), a limiting cylinder (7), a pressure oil inlet part (8), an oil storage transfer part (9), a limiting assembly (10), an oil outlet (12), a fixing seat (13) and a sample storage bottle (14), wherein the protective shell (1) is fixedly connected to the oil-well pipe (101), the lower surface of the protective shell (1) is provided with a mounting port, a display control platform (2) is arranged at the upper part of the protective shell (1), a control module (3) is fixedly connected to the inner lower surface of the protective shell (1), the control module (3) is electrically connected with the display control platform (2), a servo motor (4) is arranged on the inner lower surface of the protective shell (1), the servo motor (4) is positioned at the right side of the control module (3), the servo motor (4) is electrically connected with the control module (3), the output shaft end of the servo motor (4) is fixedly connected with a worm (5), the oil sealing cylinder (6) penetrates through the protective shell (1) and is fixedly connected to the oil-well oil pipe (101), the lower surface of an oil sealing cylinder (6) is provided with a mounting hole, a limiting cylinder (7) penetrates through and is fixedly connected with the rear part of the right side surface of a protective shell (1), a pressure oil inlet part (8) is arranged in the oil sealing cylinder (6) in a sliding manner, the pressure oil inlet part (8) is electrically connected with a control module (3), an oil storage transfer part (9) is arranged in the limiting cylinder (7) in a sliding manner, the left part of the oil storage transfer part (9) is positioned in the pressure oil inlet part (8) and is connected with the pressure oil inlet part through a bolt, the pressure oil inlet part (8) is used for sensing the pressure of a wellhead oil conveying pipe (101) and controlling the crude oil in the wellhead oil conveying pipe (101) to enter the oil storage transfer part (9), a limiting component (10) is arranged in the oil storage transfer part (9) in a sliding manner, the limiting component (10) is fixedly connected with the limiting cylinder (7), the limiting component (10) is electrically connected with the control module (3), and the limiting component (10) is used for limiting sliding of the pressure oil inlet part (8), worm wheel (11) rotate to set up in spacing drum (7) left end, worm wheel (11) cover is established in pressure oil feed part (8) outside, the internal thread has been seted up to worm wheel (11) internal surface, worm wheel (11) mesh mutually with worm (5), the downthehole rigid coupling of ann commentaries on classics of sealing oil cylinder (6) has oil-out (12), oil-out (12) material is oleophobic material, fixing base (13) fixed connection is in protection casing (1) lower surface, fixing base (13) are located the top of protection casing (1) installing port, installing port and threaded connection in fixing base (13) of protection casing (1) are passed through on sample storage bottle (14) upper portion, sample storage bottle (14) and oil-out (12) intercommunication.

2. The crude oil sampler with the batch accurate collection function for the oilfield according to claim 1, which is characterized in that: pressure oil feed part (8) is including oil inlet cylinder (801), oil seal piece (802), first U-shaped sealing ring (809) and pressure shutoff subassembly, oil inlet cylinder (801) sliding connection is in oil seal cylinder (6), oil inlet cylinder (801) left part has evenly seted up the first oil through hole of a plurality of (801 a), the first oil through hole of a plurality of (801 a) divides the three-ring to distribute, oil inlet cylinder (801) left end rigid coupling has oil seal piece (802), the chamfer has been seted up to oil seal piece (802) left part right, oil seal piece (802) left part closely cooperates with the inner wall of well head defeated oil pipe (101), it is provided with pressure shutoff subassembly to slide in oil seal piece (802), it has first U-shaped sealing ring (809) to inlay on oil seal piece (802) right flank.

3. The crude oil sampler with the batch accurate collection function for the oilfield according to claim 2, which is characterized in that: the pressure plugging component comprises a pressure sensing sliding block (803), connecting rods (804), first springs (805), oil blocking blocks (806), first pressure sensors (807) and second springs (808), wherein the pressure sensing sliding block (803) is arranged in the oil blocking block (802) in a sliding mode, four connecting rods (804) are arranged, the four connecting rods (804) are fixedly connected with the right side face of the pressure sensing sliding block (803) respectively, the four connecting rods (804) penetrate through the oil blocking block (802) respectively, the first springs (805) are sleeved on the connecting rods (804), two ends of each first spring (805) are fixedly connected with the oil blocking block (802) and the pressure sensing sliding block (803) respectively, the oil blocking blocks (806) are fixedly connected to the right ends of the four connecting rods (804), a plurality of through holes are formed in the left and right of the oil blocking blocks (806) in a penetrating mode, the first pressure sensors (807) are embedded in the right side face of the oil blocking blocks (802), and the first pressure sensors (807) are electrically connected with a control module (3), a second spring (808) is fixedly connected between the pressure sensing slide block (803) and the first pressure sensor (807).

4. The crude oil sampler with the batch accurate collection function for the oilfield according to claim 1, which is characterized in that: the oil storage transfer component (9) comprises an oil storage cylinder (901) and a second U-shaped sealing ring (902), third spring (904) and the subassembly of getting oil that slides, oil storage section of thick bamboo (901) left part is through bolt and oil inlet section of thick bamboo (801) rigid coupling, oil storage section of thick bamboo (901) right part is provided with the external screw thread, oil storage section of thick bamboo (901) right part slides and sets up in spacing drum (7), the external screw thread of oil storage section of thick bamboo (901) and the interior screw-thread fit of worm wheel (11), a plurality of second oil through hole (901 a) have been seted up to oil storage section of thick bamboo (901) left part, a plurality of second oil through hole (901 a) divide the three rings to distribute, the inside protrusion in oil storage section of thick bamboo (901) middle part is provided with the spacing ring, second U-shaped sealing ring (902) have been inlayed to the spacing ring left surface of oil storage section of thick bamboo (901), oil storage section of thick bamboo (901) left part slides and is provided with the subassembly of getting oil, right part and spacing subassembly (10) sliding connection in oil storage section of thick bamboo (901), the rigid coupling has third spring (904) between the subassembly of getting oil sliding and spacing subassembly (10).

5. The crude oil sampler with the batch accurate collection function for the oilfield according to claim 4, which is characterized in that: the first oil through hole (801 a) and the second oil through hole (901 a) are arranged in a right-to-left inclined mode, and three circles of the first oil through holes (801 a) are correspondingly communicated with three circles of the second oil through holes (901 a) respectively.

6. The crude oil sampler with the batch accurate collection function for the oilfield according to claim 4, which is characterized in that: the oil subassembly is got including pushing away oil piston (903) in the slip, metal seal ring (905) and anticorrosive rubber seal (906), push away oil piston (903) sliding connection in oil storage section of thick bamboo (901) left part, push away oil piston (903) outer peripheral face and the inseparable laminating of oil storage section of thick bamboo (901) inside wall, push away and seted up two seal grooves on oil piston (903) outer peripheral face, it is equipped with metal seal ring (905) to push away a seal groove endotheca of oil piston (903), it is equipped with anticorrosive rubber seal (906) to push away another seal groove endotheca of oil piston (903), push away oil piston (903) right flank and third spring (904) rigid coupling, push away the outside-in circumference of oil piston (903) left part and seted up a plurality of pressure balance through-hole (907).

7. The crude oil sampler with the batch accurate collection function for the oilfield according to claim 3 or 6, which is characterized in that: the right flank that hinders oil piece (806) sets up for right arc protrusion, pushes away the left surface of oil piston (903) and sets up for right arc is sunken, and the right flank that hinders oil piece (806) is the same with the left surface radian that pushes away oil piston (903), hinders oil piece (806) and pushes away oil piston (903) contact time in close fit.

8. The crude oil sampler with the batch accurate collection function for the oilfield according to claim 6, which is characterized in that: the metal sealing ring (905) is sleeved in a sealing groove on the left side of the oil pushing piston (903), and the anticorrosive rubber sealing ring (906) is sleeved in a sealing groove on the right side of the oil pushing piston (903).

9. The crude oil sampler with the batch accurate collection function for the oilfield according to claim 1, which is characterized in that: the limiting assembly (10) comprises a stepped limiting cylinder (1001), a limiting sliding cylinder (1002), limiting push rods (1003), limiting slide blocks (1004) and a second pressure sensor (1005), the outer surface of the right part of the stepped limiting cylinder (1001) is fixedly connected to the right part of the limiting cylinder (7), a plurality of limiting blocks are arranged on the thin part of the stepped limiting cylinder (1001) in an outward protruding mode, an annular T-shaped sliding groove is formed in the right side face of the stepped limiting cylinder (1001), the limiting sliding cylinder (1002) is fixedly connected to the left part of the stepped limiting cylinder (1001), the limiting sliding grooves are symmetrically formed in the upper and lower side face of the inner side face of the limiting sliding cylinder (1002), the limiting push rods (1003) are arranged in the limiting sliding mode in the limiting sliding cylinder (1002), external threads are arranged on the right part of the limiting push rods (1003), the left ends of the limiting push rods (1003) are fixedly connected with a third spring (904), two limiting slide blocks (1004) are symmetrically arranged in the upper and lower direction, two limiting sliding blocks (1004) are fixedly connected with the upper side and the lower side of the middle part of a limiting push rod (1003) respectively, the two limiting sliding blocks (1004) are connected in two limiting sliding grooves of a limiting sliding barrel (1002) in a sliding mode respectively, a second pressure sensor (1005) is embedded on the left side face of the part with the large diameter of the stepped limiting barrel (1001), and the second pressure sensor (1005) is electrically connected with a control module (3).

10. The crude oil sampler with batch accurate collection function for oil field according to claim 1 or 9, characterized in that: still including spacing piece (15) of revolving, twist grip (16) and T shape slider (17), spacing piece (15) of revolving is rotated and is connected at the spacing section of thick bamboo (1001) right part of stairstepping, spacing piece (15) axial is revolved by the left side to the right side and has been seted up the blind hole, spacing blind hole inside wall of revolving piece (15) is seted up there is the internal thread, spacing internal thread and the external screw thread fit of spacing push rod (1003) of revolving piece (15), spacing piece (15) right-hand member rigid coupling of revolving has twist grip (16), twist grip (16) left surface circumference rigid coupling has a plurality of T shape slider (17), a plurality of T shape slider (17) respectively with the T shape spout sliding connection of the spacing section of thick bamboo (1001) of stairstepping.