Hydraulic sand-containing oil and gas mixed transportation pressure increasing device

Abstract

The present application relates to oil and gas mixed transportation technical field, specifically relates to a kind of hydraulic sand-containing oil and gas mixed transportation pressure increasing device. Including mounting frame, the hydraulic system, liquid inlet pipeline, liquid outlet pipeline and pressure booster are installed on the mounting frame, the pressure booster is fixedly connected and is communicated with the multiple groups of connecting shell distributed at intervals, the fixed shell is fixedly connected in the connecting shell, the sliding member is slidably connected in the fixed shell, and reset tension spring is installed between the two, the axis of the connecting shell is vertical state, the sliding member is rotatably connected with the obturator on the side away from the fixed shell, and the obturator is fixedly connected with obturator portion. When the sealing between the obturator portion and the connecting shell is released, the present application actively controls the rotation of the obturator, so that the obturator portion is rotated to a position that is not easily impacted by the sand and gravel in the exploitation liquid, thereby reducing the probability of the obturator portion being impacted and worn by the sand-containing exploitation liquid, greatly extending the service life of the obturator portion, thereby increasing the reliability of the device in harsh environments.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil and gas mixed transportation, in particular to a hydraulic sand-containing oil and gas mixed transportation pressurizing device. BACKGROUND

[0002] In the middle and later stages of oilfield development, the distance between oil well arrangement and the joint station is getting farther and farther, and the gathering radius is getting larger and larger, so it is necessary to use the existing wellhead pressurizing device to pressurize the crude oil collected from different wellheads and then transport it to a unified location for oil and gas separation treatment and storage. Because the content of sewage, natural gas, carbon dioxide and sand in the mining liquid changes constantly during the mining process, the quality requirements for the existing wellhead pressurizing device are gradually increasing, and the commonly used pressurizing devices such as screw pumps, compressors and centrifugal pumps are increasingly unable to meet the current production needs. Therefore, a hydraulic sand-containing oil and gas mixed transportation pressurizing device driven by hydraulic pressure is developed. The device moves back and forth through the hydraulic drive double-end push rod, and cooperates with the internal one-way valve group to continuously draw and high-pressure discharge of the oil and gas sand mixed mining liquid. The device has the characteristics of high wear resistance, high output pressure, large volume and suitability for transporting high gas and sand-containing oil and water. However, the important one-way valve group on the device is prone to being impacted and worn by the sand-containing mining liquid, which is the weakest link of the device. Once the sealing performance of the one-way valve group on the device is reduced due to wear, the working performance of the hydraulic sand-containing oil and gas mixed transportation pressurizing device will be greatly reduced, the output pressure will be reduced, and the mining efficiency of the oil well will be seriously affected. SUMMARY

[0003] In order to overcome the shortcomings of the existing hydraulic sand-containing oil and gas mixed transportation pressurizing device that the one-way valve is easily impacted by sand-containing oil and gas and causes wear and sealing performance reduction, the present application provides a hydraulic sand-containing oil and gas mixed transportation pressurizing device.

[0004] The technical scheme is: a hydraulic sand-containing oil and gas mixed transportation pressurizing device, comprising a mounting frame, a hydraulic system, a liquid inlet pipeline, a liquid outlet pipeline and a pressurizer are installed on the mounting frame, a sliding plug is slidably connected in the pressurizer, the hydraulic system is in communication with the pressurizer, a plurality of groups of connecting shells are spaced apart and connected to the pressurizer, each group of connecting shells is two, the two connecting shells in the same group are in communication with the liquid inlet pipeline and the liquid outlet pipeline respectively, a fixed shell is fixedly connected in the connecting shell, a sliding member is sealingly and slidably connected to the fixed shell, and a return tension spring is installed therebetween, the axis of the connecting shell is in a vertical state, a blocking member is rotatably connected to the side of the sliding member away from the fixed shell, the blocking member has a spherical surface, a blocking portion is provided on the blocking member, the blocking portion is in extrusion sealing with the connecting shell, and a rotating mechanism is provided on the connecting shell for driving the blocking member to rotate, so that the blocking portion avoids the impact of sand.

[0005] Further, the rotating mechanism comprises a hydraulic push rod, the hydraulic push rod is fixed to the connecting shell, the telescopic end of the hydraulic push rod is hinged with a connecting rod, the connecting rod is hinged with the blocking piece, and the connecting rod is located on the side of the telescopic end of the hydraulic push rod away from the fixed part of the hydraulic push rod.

[0006] Further, the blocking piece is provided with a liquid guiding slope, and the liquid guiding slope is located on the side of the blocking piece close to the connecting rod.

[0007] Further, the middle part of the liquid guiding slope is provided with a protection groove, and the hinged part of the connecting rod and the blocking piece is located in the protection groove.

[0008] Further, the side of the connecting shell close to the hydraulic push rod is fixed with a flow limiting piece, and the flow limiting piece is located above the hydraulic push rod.

[0009] Further, the side of the blocking part away from the blocking piece is a spherical surface, the radius of the sphere on which the spherical surface of the blocking part is located is greater than the radius of the sphere on which the spherical surface of the blocking piece is located, and the spherical surfaces of the two are connected to each other.

[0010] Further, the connecting shell is slidingly connected with a sliding ring above the extrusion sealing part of the connecting shell and the blocking part, the maximum diameter of the sliding ring is greater than the minimum diameter of the extrusion sealing part of the connecting shell and the blocking part, the lower side of the sliding ring is fixed with a guide filter screen, the cross section of the guide filter screen is circular, the maximum diameter of the guide filter screen is less than the minimum diameter of the extrusion sealing part of the connecting shell and the blocking part, and when the blocking part and the connecting shell are extruded and sealed, the guide filter screen is in contact with the blocking part.

[0011] Further, the center of the circle in which the cross section of the guide filter screen is located gradually inclines away from the hydraulic push rod from top to bottom.

[0012] Further, the fixed shell and the sliding piece jointly form a cleaning cavity, the lower side of the sliding piece is fixed with a first filter screen, a one-way valve is installed in the sliding piece located in the fixed shell, the cleaning cavity is in communication with the connecting shell through the first filter screen and the one-way valve, the fixed block symmetrically distributed on the sliding piece is fixed with a guide filter screen, the fixed block and the sliding piece are jointly provided with a drainage channel, the drainage channel is in communication with the cleaning cavity and the connecting shell at the same time, the outlet of the drainage channel on the fixed block is located on the upper side of the blocking piece, the outlet position of the drainage channel on the fixed block is slidingly connected with a blocking block for blocking itself, and an elastic piece is arranged between the two.

[0013] Further, the contact position of the blocking block and the adjacent drainage channel is a circular truncated cone, the blocking block is fixed with a second filter screen, and the second filter screen is located on the outside of the drainage channel.

[0014] The beneficial effects of the present application have at least the following points compared with the prior art: 1. The present application actively controls the rotation of the blocking part when the sealing between the blocking part and the connecting shell is released, so that the blocking part is rotated to a position that is not easily impacted by the sand in the mining liquid, thereby reducing the probability of the blocking part being impacted and worn by the sand-containing mining liquid, greatly prolonging the service life of the blocking part, and thereby increasing the reliability of the device in harsh environments.

[0015] 2. The present application limits the shape of the blocking part, and cooperates with the flow limiting part to limit the flow direction of the mining liquid in the connecting shell, thereby reducing the probability of the sand in the mining liquid wearing the blocking part.

[0016] 3. The present application inserts a guide screen into the extrusion sealing place of the connecting shell and the blocking part, intercepts and guides the sand in the mining liquid, which can not only reduce the probability of sand wearing the extrusion sealing place of the connecting shell and the blocking part, but also reduce the probability of sand flowing between the blocking part and the flow limiting part to wear the blocking part.

[0017] 4. The present application collects and cleans the mining liquid by using the movement of the sliding part when the sliding part, the blocking part and the blocking part are opened and closed, and uses the backflow of the clean mining liquid to flush the extrusion sealing place of the connecting shell and the blocking part, thereby reducing the probability of the sand being clamped by the connecting shell and the blocking part, and maintaining the use performance of the device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0019] Figure 2 is a sectional view of the booster of the present application;

[0020] Figure 3 is a schematic diagram of the three-dimensional structure of the booster and the connecting shell of the present application;

[0021] Figure 4 is a sectional view of the connecting shell of the present application;

[0022] Figure 5 is a sectional view of the connecting shell and the fixed shell of the present application;

[0023] Figure 6 is a sectional view of the blocking part and the blocking part of the present application;

[0024] Figure 7 is a schematic diagram of the rotating open state of the blocking part of the present application;

[0025] Figure 8 is a schematic diagram of the three-dimensional structure of the sliding part and the drainage channel of the present application;

[0026] Figure 9 is a sectional view of the blocking block and the second screen of the present application.

[0027] Fig. 1: mounting frame, 101: hydraulic system, 102: liquid inlet pipeline, 103: liquid outlet pipeline, 2: booster, 201: left one cavity, 202: left two cavities, 203: right one cavity, 204: right two cavities, 205: left hydraulic cavity, 206: right hydraulic cavity, 3: sliding plug, 4: connecting shell, 5: fixed shell, 6: sliding part, 601: liquid discharge channel, 61: reset tension spring, 62: first filter screen, 63: one-way valve, 7: plugging part, 71: plugging part, 72: liquid guiding slope, 73: protection groove, 74: flow limiting part, 8: hydraulic push rod, 9: connecting rod, 10: sliding ring, 11: guide filter screen, 12: fixed block, 13: plugging block, 14: second filter screen. DETAILED DESCRIPTION

[0028] The present application will now be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred embodiments of the application are shown. The application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and fully convey the scope of the application to the skilled person.

[0029] Example 1: This embodiment discloses a hydraulic sand-containing oil and gas mixed transportation booster device, which is used to overcome the shortcomings of the existing hydraulic oil and gas mixed transportation booster device, i.e., the one-way valve is easily impacted by sand-containing oil and gas, causing wear and leading to a decline in sealing performance.

[0030] Reference Figures 1-7 A hydraulic sand-containing oil and gas mixed transportation booster device, comprising a mounting frame 1, a hydraulic system 101, a liquid inlet pipeline 102, a liquid outlet pipeline 103, a control terminal and a plurality of boosters 2 distributed at intervals are installed on the mounting frame 1, a sliding plug 3 is slidingly connected in the booster 2, the sliding plug 3 separates the booster 2 into at least six cavities, i.e., a left one cavity 201, a left two cavities 202, a right one cavity 203, a right two cavities 204, a left hydraulic cavity 205 and a right hydraulic cavity 206 (refer to Figure 2As shown in the figure), wherein the left chamber 201, left two chambers 202, right one chamber 203 and right two chambers 204 are oil and gas pressurized working cavity, left hydraulic chamber 205 and right hydraulic chamber 206 are hydraulic drive cavity, by injecting hydraulic oil in left hydraulic chamber 205 and right hydraulic chamber 206 in turn, control sliding plug 3 in the booster 2 left and right reciprocating sliding, left hydraulic chamber 205 and right hydraulic chamber 206 are communicated with hydraulic system 101, booster 2 is fixed and communicated with the four groups of connecting shell 4 (the number of connecting shell 4 group changes with the number of working cavity), each group of connecting shell 4 is upper and lower, four groups of connecting shell 4 are corresponding to left one chamber 201, left two chambers 202, right one chamber 203 and right two chambers 204 respectively, each group of connecting shell 4 in the upper side of connecting shell 4 is communicated with liquid inlet pipeline 102, each group of connecting shell 4 in the lower side of connecting shell 4 is communicated with liquid outlet pipeline 103, connecting shell 4 is fixedly connected with fixed shell 5, fixed shell 5 is sealingly connected with sliding member 6, and reset tension spring 61 is installed between them, the axis of connecting shell 4 is in vertical state, the upper side of sliding member 6 is rotatably connected with blocking member 7, blocking member 7 has a spherical surface, the upper side of blocking member 7 is provided with blocking part 71, blocking part 71 is extruded and sealed with connecting shell 4, the side away from blocking member 7 of blocking part 71 is spherical, the radius of the sphere where the upper spherical surface of blocking part 71 is located is greater than the radius of the sphere where the upper spherical surface of blocking member 7 is located, and the spherical surfaces of the two are connected with each other, so when blocking part 71 is extruded and contacted with connecting shell 4, even if blocking part 71 has not been rotated to the uppermost side of blocking member 7, blocking part 71 will rotate to the uppermost side of blocking member 7 under the influence of extrusion force, rotating mechanism is arranged on connecting shell 4 for driving blocking member 7 to rotate, so that blocking part 71 avoids the impact of sand and gravel, hydraulic system 101 and rotating mechanism are electrically connected with control terminal.

[0031] In the above scheme, the hydraulic system 101, the liquid inlet pipeline 102 and the liquid outlet pipeline 103 are all provided with a plurality of valves, which can be separately disconnected from any one booster 2, so when a single booster 2 fails, only the hydraulic system 101, the liquid inlet pipeline 102 and the liquid outlet pipeline 103 connected with the booster 2 need to be closed by the valve, and the single booster 2 needs to be repaired, which will not affect other boosters 2. Because the reset tension spring 61 is located on the lower side of the fixed shell 5, the fixed shell 5 can effectively protect the reset tension spring 61, so that the reset tension spring 61 is not affected by the impact of sand and gravel in the mining liquid.

[0032] Further, referring to Figures 4-7 , the rotating mechanism comprises a hydraulic push rod 8, the hydraulic push rod 8 is fixedly connected to the lower part of the connecting shell 4, the extension end of the hydraulic push rod 8 is located in the connecting shell 4, and the extension end is hingedly connected with a connecting rod 9, the connecting rod 9 is hingedly connected with the blocking member 7, the connecting rod 9 is located on the right side of the adjacent hydraulic push rod 8, the blocking member 7 is provided with a liquid guiding slope 72, the liquid guiding slope 72 is located on the side of the blocking member 7 close to the connecting rod 9, referring to Figure 7When the blocking piece 7 rotates, the liquid guiding slope 72 is located at the left side of the blocking piece 7, and the blocking piece 7 gradually inclines to the right from top to bottom, the middle of the liquid guiding slope 72 is provided with a protection groove 73, the hinged position of the connecting rod 9 and the blocking piece 7 is located in the protection groove 73, which is used to reduce the probability of the connecting rod 9 and the hinged position of the blocking piece 7 being impacted by sand, the side of the connecting shell 4 close to the hydraulic push rod 8 is fixedly connected with a flow limiting piece 74, the flow limiting piece 74 is located above the hydraulic push rod 8, which is used to reduce the liquid flow area of the blocking part 71 after the blocking piece 7 rotates, and the hydraulic push rod 8 is in communication with the hydraulic system 101.

[0033] In the above scheme, when the blocking piece 7 rotates, the liquid guiding slope 72 is located at the left side of the blocking piece 7, and the blocking piece 7 gradually inclines to the right from top to bottom, the middle of the liquid guiding slope 72 is provided with a protection groove 73, the hinged position of the connecting rod 9 and the blocking piece 7 is located in the protection groove 73, which is used to reduce the probability of the connecting rod 9 and the hinged position of the blocking piece 7 being impacted by sand, the side of the connecting shell 4 close to the hydraulic push rod 8 is fixedly connected with a flow limiting piece 74, the flow limiting piece 74 is located above the hydraulic push rod 8, which is used to reduce the liquid flow area of the blocking part 71 after the blocking piece 7 rotates, and the hydraulic push rod 8 is in communication with the hydraulic system 101. Figure 7 , the hydraulic push rod 8 and the blocking part 71 are located at the right side of the liquid guiding slope 72, most of the exploitation liquid flows to the left side of the blocking piece 7 under the action of the flow limiting piece 74 and the liquid guiding slope 72, so that the blocking piece 7 can effectively protect the hydraulic push rod 8 and the blocking part 71, reduce the probability of the hydraulic push rod 8 and the blocking part 71 being impacted by sand in the exploitation liquid, and further reduce the wear of the hydraulic push rod 8 and the blocking part 71, and reduce the probability of the device affecting the performance of the device due to wear.

[0034] The working principle of the above scheme is as follows:

[0035] After the staff installs the device at the well mouth, the hydraulic system 101 is started by the control terminal, the hydraulic system 101 injects hydraulic oil into the left and right hydraulic chambers 205 and 206 through reciprocation, so that the sliding plug 3 moves left and right reciprocally, so that the left one chamber 201, the left two chambers 202, the right one chamber 203 and the right two chambers 204 work continuously, the exploitation liquid in the well is drawn through the liquid inlet pipeline 102, and the exploitation liquid is discharged to the liquid outlet pipeline 103 in a high pressure state, for the convenience of description, the following is an example that the hydraulic system 101 injects hydraulic oil into the left hydraulic chamber 205, so that the sliding plug 3 moves to the right, at this time, the hydraulic oil in the right hydraulic chamber 206 is naturally discharged back into the hydraulic system 101, the left one chamber 201 and the right one chamber 203 draw the exploitation liquid in the well through the liquid inlet pipeline 102, the exploitation liquid in the left two chambers 202 and the right two chambers 204 flows to the liquid outlet pipeline 103 under the extrusion of the sliding plug 3, at this time, the sliding member 6 and the blocking piece 7 in the upper connecting shell 4 of the left one chamber 201 and the right one chamber 203 move downward under the action of the exploitation liquid pressure to open, the sliding member 6 and the blocking piece 7 in the lower connecting shell 4 of the left two chambers 202 and the right two chambers 204 move downward under the action of the exploitation liquid pressure to open, the adjacent reset tension spring 61 is stretched to store energy, the sliding member 6 and the blocking piece 7 in other connecting shells 4 are in a closed state under the action of the exploitation liquid pressure, that is, the blocking part 71 at other positions is tightly attached to the adjacent connecting shell 4, and the following is an example of the sliding member 6 and the blocking piece 7 in the upper connecting shell 4 of the left one chamber 201:

[0036] When the sliding member 6 and the blocking member 7 in the connecting shell 4 start to slide downward, that is, the hydraulic system 101 injects hydraulic oil into the left hydraulic cavity 205, the hydraulic system 101 synchronously injects hydraulic oil into the hydraulic push rod 8, so that the telescopic end of the hydraulic push rod 8 extends to the left, the telescopic end of the hydraulic push rod 8 drives the connecting rod 9 to move to the left, the connecting rod 9 drives the blocking member 7 and the blocking part 71 to rotate clockwise (from the front to the rear perspective), the blocking part 71 rotates to the right side of the blocking member 7, and the liquid guiding inclined surface 72 rotates to the left side of the blocking member 7. During the most of the mining process in the connecting shell 4, the liquid flows downward through the left side of the blocking member 7, thereby reducing the probability of the telescopic end of the hydraulic push rod 8 and the blocking part 71 being impacted by sand and gravel in the mining liquid.

[0037] After the sliding plug 3 moves to the rightmost side of the stroke, the control terminal controls the hydraulic system 101 to inject hydraulic oil into the right hydraulic cavity 206, so that the sliding plug 3 starts to move to the left, the hydraulic oil in the left hydraulic cavity 205 naturally flows back into the hydraulic system 101. At this time, the sliding member 6 and the blocking member 7 in the lower side of the connecting shell 4 of the left cavity 201 and the right cavity 203 are affected by the mining liquid pressure, and the sliding member 6 and the blocking member 7 in the upper side of the connecting shell 4 of the left cavity 202 and the right cavity 204 are affected by the mining liquid pressure, which move downward according to the above working principle to open, and the control terminal synchronously controls the hydraulic system 101 to withdraw the hydraulic oil in the hydraulic push rod 8 in the upper side of the connecting shell 4 of the left cavity 201 and the right cavity 203 and the hydraulic push rod 8 in the upper side of the connecting shell 4 of the left cavity 202 and the right cavity 204, so that the telescopic end in the hydraulic push rod 8 drives the adjacent connecting rod 9 and the blocking member 7 to reset, so that the blocking part 71 rotates to the upper side of the blocking member 7 again, and the blocking member 7 and the blocking part 71 move upward to reset under the action of the reset spring 61 and the mining liquid pressure. The blocking part 71 reseals the adjacent connecting shell 4, the hydraulic system 101 injects hydraulic oil into the left hydraulic cavity 205 and the right hydraulic cavity 206 through reciprocation, so that the device continuously collects the mining liquid in the well, and the mining liquid is transported to the designated place through the liquid outlet pipeline 103.

[0038] In example 2, on the basis of example 1, the device further has the function of reducing the wear degree of the sealing position of the connecting shell 4 and the blocking part 71 by sand and gravel in the mining liquid.

[0039] Further, with reference to Figures 4-7The sliding ring 10 is connected with the connecting shell 4 above the extrusion sealing position of the connecting shell 4 and the blocking part 71, and the maximum diameter of the sliding ring 10 is greater than the minimum diameter of the extrusion sealing position of the connecting shell 4 and the blocking part 71, so that the sliding ring 10 is limited by the connecting shell 4 and cannot move to the lower side of the extrusion sealing position of the connecting shell 4 and the blocking part 71. The lower side of the sliding ring 10 is fixedly connected with the guide screen 11, the cross section of the guide screen 11 is circular, the maximum diameter of the guide screen 11 is less than the minimum diameter of the extrusion sealing position of the connecting shell 4 and the blocking part 71, so that the guide screen 11 can extend into the extrusion sealing position of the connecting shell 4 and the blocking part 71. When the blocking part 71 is extruded and sealed with the connecting shell 4, the guide screen 11 is extruded and moved to the upper side of the extrusion sealing position of the connecting shell 4 and the blocking part 71 by the blocking part 71. The center of the circle in which the cross section of the guide screen 11 is located is gradually inclined from top to bottom to be away from the hydraulic push rod 8. The guide screen 11 actively guides the sand and gravel in the exploitation liquid to the left side of the adjacent blocking part 7, further reducing the probability of the sand and gravel flowing to the right side of the blocking part 7 along a small amount of exploitation liquid.

[0040] In the above scheme, with reference to Figure 7 The height of the guide screen 11 in the vertical direction is not less than the height of the contact position of the connecting shell 4 and the blocking part 71 in the vertical direction, so that when the blocking part 7 moves downward to open, the guide screen 11 actively intercepts and guides the sand and gravel in the exploitation liquid, reducing the possibility of sand and gravel abrasion at the contact position of the connecting shell 4 and the blocking part 71.

[0041] The working principle of the above scheme is as follows:

[0042] Taking the connecting shell 4 and the adjacent parts in Figure 7 When the blocking part 7 moves downward to open under the action of the exploitation liquid pressure, the exploitation liquid flows downward through the connecting shell 4, and the sliding ring 10 and the guide screen 11 move downward under the action of the exploitation liquid. The guide screen 11 is inserted into the extrusion sealing position of the connecting shell 4 and the blocking part 71, at this time, the exploitation liquid has little influence on the downward flow, and the sand and gravel mixed in the exploitation liquid directly flows downward through the extrusion sealing position of the connecting shell 4 and the blocking part 71 under the guidance of the guide screen 11, and gradually enters the liquid flow flowing to the left side of the blocking part 7 under the guidance of the guide screen 11, thereby reducing the probability of the sand and gravel entering the right side of the blocking part 7. When the blocking part 7 moves upward to reset under the action of the exploitation liquid pressure, the sliding ring 10 and the guide screen 11 move upward to reset under the extrusion of the blocking part 71.

[0043] In example 3, on the basis of example 2, the device further has the functions of collecting clean exploitation liquid (i.e. exploitation liquid with small sand content and without obvious large particle sand and gravel), and back flushing the extrusion sealing position of the connecting shell 4 and the blocking part 71 through the clean exploitation liquid, thereby reducing the probability of the sand and gravel being clamped by the connecting shell 4 and the blocking part 71, and reducing the possibility of the sealing performance of the extrusion sealing position of the connecting shell 4 and the blocking part 71 being reduced due to the clamping of the sand and gravel.

[0044] Further, referring to Figure 6 , Figure 8 and Figure 9 , the fixed shell 5 and the sliding member 6 together constitute a cleaning cavity, the lower side of the sliding member 6 is fixedly connected with a first filter screen 62, the first filter screen 62 is used to prevent the sand and gravel in the mining liquid in the connecting shell 4 from entering the cleaning cavity, the sliding member 6 is provided with a one-way valve 63 in the fixed shell 5, the cleaning cavity is communicated with the connecting shell 4 through the first filter screen 62 and the one-way valve 63, the one-way valve 63 is used to suck the mining liquid in the connecting shell 4 from bottom to top through the first filter screen 62 when the volume of the cleaning cavity is expanded, and when the volume of the cleaning cavity is reduced, the one-way valve 63 is closed to prevent the mining liquid from flowing out downward through the first filter screen 62, the sliding member 6 is fixedly connected with symmetrically distributed fixed blocks 12, the fixed blocks 12 and the sliding member 6 are provided with a drainage passage 601, the lower side of the drainage passage 601 is communicated with the cleaning cavity, the upper side of the drainage passage 601 is communicated with the connecting shell 4, the outlet of the drainage passage 601 on the fixed block 12 is located at the upper side of the plugging member 7, the outlet of the drainage passage 601 on the fixed block 12 is slidingly connected with a plugging block 13 for plugging itself, and an elastic member is arranged between the two, the elastic member is a tension spring, the contact position of the plugging block 13 with the adjacent drainage passage 601 is a circular truncated cone surface, which is used to diffuse the clean mining liquid discharged from the drainage passage 601 to the surrounding, thereby increasing the impact range of the clean mining liquid, the plugging block 13 is fixedly connected with a second filter screen 14 at the largest diameter position, the second filter screen 14 is located outside the drainage passage 601, and the second filter screen 14 is used to prevent the sand and gravel in the surrounding mining liquid from flowing into the drainage passage 601 when the plugging block 13 does not plug the adjacent drainage passage 601.

[0045] In the above scheme, the opening direction of the fixed shell 5 is downward, so when the cleaning cavity sucks the mining liquid, the sand and gravel in the mining liquid are not easily attracted by the cleaning cavity due to inertia, further reducing the difficulty of sucking the clean mining liquid.

[0046] The working principle of the above scheme is as follows:

[0047] In the above scheme, the opening direction of the fixed shell 5 is downward, so when the cleaning cavity sucks the mining liquid, the sand and gravel in the mining liquid are not easily attracted by the cleaning cavity due to inertia, further reducing the difficulty of sucking the clean mining liquid. Figure 7For example, when the sliding member 6 and the blocking member 7 move downward under the action of the mining liquid pressure to open, the sliding member 6 moves downward relative to the fixed shell 5, the cleaning cavity volume becomes larger, the one-way valve 63 is opened under the action of negative pressure, the cleaning cavity sucks the mining liquid in the connecting shell 4 from bottom to top through the first filter screen 62 and the one-way valve 63, the first filter screen 62 intercepts the sand in the mining liquid, so that the solution in the cleaning cavity is clean mining liquid, when the sliding member 6 and the blocking member 7 move upward under the action of the mining liquid pressure to reset, the cleaning cavity volume becomes smaller, the one-way valve 63 is closed under the action of pressure, at this time, the clean mining liquid can only be discharged outward through the liquid discharge channel 601, the blocking block 13 and the second filter screen 14 are opened under the impact of the clean mining liquid, the elastic member on the blocking block 13 is stretched to store force, the clean mining liquid is sprayed along the gradually expanding annular path to the connection shell 4 and the sealing part of the blocking part 71 under the guidance of the blocking block 13, the clean mining liquid is sprayed to the connection shell 4 and the sealing part of the blocking part 71, at the same time, the possibility of the sand-containing mining liquid in the connection shell 4 flowing back upward under the action of liquid pressure during the incomplete reset of the blocking part 71 is reduced, so that the probability of the sand entering the connection shell 4 and being clamped between the connection shell 4 and the blocking part 71 is reduced, when the sliding member 6 is completely reset, the clean mining liquid in the cleaning cavity is no longer discharged outward, the blocking block 13 and the second filter screen 14 are reset under the action of the elastic force of the elastic member on the blocking block 13, and the second filter screen 14 blocks the sand-containing mining liquid around from entering the liquid discharge channel 601.

[0048] The above embodiments are provided for those skilled in the art to implement or use the present application, those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive idea of the present application, therefore, the protection scope of the present application should not be limited by the above embodiments, but should be the maximum scope meeting the innovative features mentioned in the present application.

Claims

1. A hydraulic sand-laden oil and gas multiphase flow booster device, characterized in that, The mounting frame (1) is provided with a hydraulic system (101), an inlet pipeline (102), an outlet pipeline (103) and a booster (2), the booster (2) is slidably connected with a sliding plug (3), the hydraulic system (101) is communicated with the booster (2), the booster (2) is fixedly connected with and communicated with a plurality of groups of connecting shells (4) which are spaced apart, each group of the connecting shells (4) is two, the two connecting shells (4) in the same group are communicated with the inlet pipeline (102) and the outlet pipeline (103) respectively, the connecting shell (4) is fixedly connected with a fixed shell (5), the fixed shell (5) is sealingly and slidably connected with a sliding piece (6), and a reset tension spring (61) is arranged between the fixed shell (5) and the sliding piece (6), the axis of the connecting shell (4) is in a vertical state, the sliding piece (6) is rotatably connected with a blocking piece (7) on the side away from the fixed shell (5), the blocking piece (7) has a spherical surface, the blocking piece (7) is provided with a blocking part (71), the blocking part (71) is extruded and sealed with the connecting shell (4), and a rotating mechanism is arranged on the connecting shell (4) to drive the blocking piece (7) to rotate, so that the blocking part (71) avoids the impact of sand and gravel. The fixed shell (5) and the sliding piece (6) jointly form a cleaning cavity, the lower side of the sliding piece (6) is fixedly connected with a first filter screen (62), the sliding piece (6) is provided in the fixed shell (5) with a one-way valve (63), the cleaning cavity is communicated with the connecting shell (4) through the first filter screen (62) and the one-way valve (63), the sliding piece (6) is fixedly connected with symmetrically distributed fixed blocks (12), the fixed blocks (12) and the sliding piece (6) are provided with a drainage channel (601) in common, the drainage channel (601) is communicated with the cleaning cavity and the connecting shell (4) at the same time, the outlet of the drainage channel (601) on the fixed block (12) is located on the upper side of the blocking piece (7), and the outlet position of the drainage channel (601) on the fixed block (12) is slidably connected with a blocking block (13) for blocking itself, and an elastic member is arranged between the blocking block (13) and the outlet position of the drainage channel (601).

2. A hydraulic sand-laden oil and gas mixed transportation pressurizing device according to claim 1, characterized in that, The rotating mechanism comprises a hydraulic push rod (8), the hydraulic push rod (8) is fixedly connected to the connecting shell (4), and the telescopic end of the hydraulic push rod (8) is hingedly connected with a connecting rod (9), the connecting rod (9) is hingedly connected with the blocking piece (7), and the connecting rod (9) is located on the side away from the fixed part of the hydraulic push rod (8).

3. A hydraulic sand-laden oil and gas mixed transportation pressurizing device according to claim 2, characterized in that, The blocking piece (7) is provided with a liquid guiding slope (72), and the liquid guiding slope (72) is located on the side of the blocking piece (7) close to the connecting rod (9).

4. A hydraulic sand-laden oil and gas mixed transportation pressurizing device according to claim 3, characterized in that, The middle part of the liquid guiding slope (72) is provided with a protection groove (73), and the hinge connection between the connecting rod (9) and the blocking piece (7) is located in the protection groove (73).

5. A hydraulic sand-laden oil and gas mixed transportation pressurizing device according to claim 4, characterized in that, The side of the connecting shell (4) close to the hydraulic push rod (8) is fixedly connected with a flow limiting piece (74), and the flow limiting piece (74) is located above the hydraulic push rod (8).

6. A hydraulic sand-laden oil and gas mixed transportation pressurizing device according to claim 5, characterized in that, The blocking part (71) is spherical on the side away from the blocking member (7), the radius of the sphere on which the spherical surface of the blocking part (71) is located is greater than the radius of the sphere on which the spherical surface of the blocking member (7) is located, and the spherical surfaces of the two are connected to each other.

7. A hydraulic sand-laden oil and gas mixed transportation pressurizing device according to claim 6, characterized in that, The connecting shell (4) is slidingly connected with a sliding ring (10) above the extrusion sealing position of the connecting shell (4) and the blocking part (71), the maximum diameter of the sliding ring (10) is greater than the minimum diameter of the extrusion sealing position of the connecting shell (4) and the blocking part (71), the lower side of the sliding ring (10) is fixedly connected with a guide screen (11), the cross section of the guide screen (11) is circular, the maximum diameter of the guide screen (11) is less than the minimum diameter of the extrusion sealing position of the connecting shell (4) and the blocking part (71), and the guide screen (11) is in contact with the blocking part (71) when the blocking part (71) and the connecting shell (4) are extrusion sealed.

8. A hydraulic sand-laden oil and gas mixed transportation pressurizing device according to claim 7, characterized in that, The center of the circle on which the cross section of the guide screen (11) is located gradually inclines from top to bottom to the direction away from the hydraulic push rod (8).

9. A hydraulic sand-laden oil and gas mixed transport pressurizing device according to claim 8, characterized in that, The contact position of the blocking block (13) and the adjacent liquid drainage channel (601) is a circular table surface, the blocking block (13) is fixedly connected with a second screen (14), and the second screen (14) is located outside the liquid drainage channel (601).

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