CN213838603U

CN213838603U - Sand washing and discharging device of horizontal three-phase separator

Info

Publication number: CN213838603U
Application number: CN202022615469.XU
Authority: CN
Inventors: 鲁礼民; 唐鹏; 叶东妮; 孔庆伟
Original assignee: Xi'an Hengxu Technology Co ltd
Current assignee: Xi'an Hengxu Equipment Manufacturing Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-07-30
Anticipated expiration: 2030-11-12

Abstract

The utility model discloses a sand washing and discharging device of horizontal three-phase separator, include: the sand-limiting plate, the sand washing assembly and the sand discharging box; the sand limiting plate is fixedly arranged at the tail end of the pre-separation section in the tank body of the three-phase separator, two ends and the bottom end of the sand limiting plate are respectively and fixedly connected with the inner wall and the bottom of the tank body, and a spacing distance is reserved between the top end of the sand limiting plate and the top of the tank body; the sand washing component penetrates into the tank body, and the part in the tank body is positioned in the pre-separation section and used for introducing liquid outside the tank body into the pre-separation section in the tank body; and the sand discharging box is positioned outside the tank body, is positioned below the sand washing assembly, is connected with the bottom of the tank body and is communicated with the inside of the tank body. The utility model discloses carry out sand removal, arrange the sand processing at the pre-separation section, the sedimentary separation section and the long-pending sand volume of stable section (middle and back section) of three-phase separator are very little, avoid disturbing the internal flow field that has tended to stable originally of jar, consequently, can not influence final water oil separating effect.

Description

Sand washing and discharging device of horizontal three-phase separator

Technical Field

The utility model belongs to the technical field of the oil field crude oil dehydration, concretely relates to sand washing and discharging device of horizontal three-phase separator.

Background

The three-phase separator is a device for thermochemical settling separation of crude oil by means of density difference of three-phase media of oil, gas and water. In the process of oil field production and development, the three-phase separator is used as one of the most important core devices in the ground engineering construction of oil and gas fields, and is applied in the production construction of the oil fields on a large scale. The water-containing crude oil is provided with a large amount of silt from the bottom of the well and is pushed to a separation settling section and a stable section by the turbulence of a pre-separation section of a three-phase separator, the flow velocity of the separation settling section and the stable section is extremely low, a large amount of silt is deposited in the separation settling section and the stable section, and after a certain amount of silt is accumulated, the silt can be hardened and accumulated at the bottom of a tank body, so that the oil-water separation effect is directly influenced. In order to ensure the treatment index, the three-phase separator needs to stop producing and cleaning sand after operating for a period of time, which seriously affects the production and management of the oil field. In order to avoid production stop and sand removal, a back washing pump is adopted to carry out on-line back washing and sand removal operation on the equipment, and most accumulated sand is deposited in a separation settling section and a stable section of the equipment, so that the back washing disturbs an originally stable flow field, and the oil-water separation effect is seriously not up to the standard.

At present, the sand removing mode of the three-phase separator is not limited to two modes of production stop sand removing and on-line sand removing. In order not to affect the production schedule, online sand removal is generally preferred. However, online sand removal has the disadvantages of destroying the stability of a flow field and influencing the oil-water separation effect, so that the oil-water index does not reach the standard.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems existing in the prior art, the utility model provides a sand washing and discharging device of a horizontal three-phase separator. The to-be-solved technical problem of the utility model is realized through following technical scheme:

a sand washing and discharging device of a horizontal three-phase separator comprises: the sand-limiting plate, the sand washing assembly and the sand discharging box;

the sand limiting plate is fixedly arranged at the tail end of the pre-separation section in the tank body of the three-phase separator, two ends and the bottom end of the sand limiting plate are respectively and fixedly connected with the inner wall and the bottom of the tank body, and a spacing distance is reserved between the top end of the sand limiting plate and the top of the tank body;

the sand washing component penetrates into the tank body, and the part in the tank body is positioned in the pre-separation section and used for introducing liquid outside the tank body into the pre-separation section in the tank body;

the sand discharging box is positioned outside the tank body, is positioned below the sand washing assembly, is connected with the bottom of the tank body, and is communicated with the inside of the tank body.

In an embodiment of the present invention, the sand washing assembly includes: a water conduit, a distribution pipe and a plurality of nozzles;

one end of the water conduit is positioned outside the tank body, and the other end of the water conduit penetrates through the tank body and is communicated with one end of the distribution pipe;

the distribution pipe is positioned in the tank body, and the other end of the distribution pipe is closed;

one end of the nozzle is communicated with the distribution pipe, and the other end of the nozzle is communicated with the inside of the tank body; the plurality of nozzles are arranged at intervals.

In an embodiment of the present invention, the distribution pipe includes: two distribution sub-pipes;

the distribution sub-pipe is of an arc bent pipe structure and protrudes towards the side wall of the tank body.

In an embodiment of the present invention, the sand discharging box includes: a box body and an electric valve;

the box body is positioned outside the tank body, is positioned below the sand washing assembly, is connected with the bottom of the tank body and is communicated with the inside of the tank body;

and the electric valve is arranged at the bottom of the box body.

In one embodiment of the utility model, the device also comprises a circulating water pump and a PLC controller;

the water outlet end of the circulating water pump is connected with one end of the water diversion pipe;

and the PLC is electrically connected with the circulating water pump and the electric valve.

In an embodiment of the present invention, the water inlet end of the water circulating pump is connected to the water outlet of the tank body.

In one embodiment of the present invention, the plurality of nozzles are arranged such that the other end of one of the nozzles faces the inner wall of the tank body and the other end of the other nozzle faces a direction close to the flask.

In an embodiment of the present invention, the two distribution sub-pipes are disposed axially symmetrically with respect to the axial direction of the water conduit.

The utility model has the advantages that:

1. the utility model discloses a sand limiting plate is the grit interception at the preseparation section also be the anterior segment of the jar body, erode the grit of preseparation section through the sand washing subassembly, then through the external portion of the sand discharging box jar, owing to clear sand, arrange the sand processing at the preseparation section, the sedimentary separation section and the long-pending sand volume of stable section (middle and back section) of three-phase separator are very little, avoid disturbing the internal stable flow field that has tended to of jar originally, consequently, can not influence ultimate water oil separating effect. Meanwhile, the three-phase separator does not need to be shut down specially for sand cleaning and sand discharging, and only needs to be cleaned by the way during overhauling and maintenance.

2. The utility model discloses further reduce because the corruption that the long-pending sand in jar body bottom arouses, prolonged the life of equipment.

3. The utility model discloses a PLC controller control motorised valve and circulating water pump need not manual operation, have simplified the operation, and degree of automation is higher.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural diagram of a sand washing and discharging device of a horizontal three-phase separator according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a sand washing and discharging device of a horizontal three-phase separator according to an embodiment of the present invention;

FIG. 3 is a view from A-A of FIG. 2;

fig. 4 is a block diagram of a sand washing and discharging device of a horizontal three-phase separator according to an embodiment of the present invention.

Description of reference numerals:

10-sand limiting plate; 20-a sand washing assembly; 21-a water conduit; 22-a distribution pipe; 23-a nozzle; 24-a distributor sub-tube; 30-sand discharging box; 31-a box body; 32-electric valve; 40-a three-phase separator; 41-tank body; 42-a liquid inlet pipe; 50-a circulating water pump; 60-a PLC controller; and 70-a sewage tank.

Detailed Description

The present invention will be described in further detail with reference to specific examples, but the present invention is not limited thereto.

Example one

Referring to fig. 1, a sand washing and discharging device of a horizontal three-phase separator includes: a sand limiting plate 10, a sand washing assembly 20 and a sand discharge box 30. In this embodiment, the tank 41 of the horizontal three-phase separator 40 can be sequentially divided into three sections, namely a pre-separation section, a separation settling section and a stabilization section, for performing three-phase separation on crude oil. The sand limiting plate 10 is fixedly arranged at the tail end of a pre-separation section in a tank 41 of the three-phase separator 40, two ends of the sand limiting plate 10 are fixedly connected with the inner wall of the tank 41, the bottom end of the sand limiting plate 10 is fixedly connected with the bottom of the tank 41, and a certain spacing distance is reserved between the top end of the sand limiting plate 10 and the top of the tank 41. The sand limiting plate 10 is positioned between the pre-separation section and the separation settling section, the liquid inlet pipe 42 of the three-phase separator 40 conveys crude oil to the pre-separation section in the tank body 41 for pre-separation treatment, and when the liquid level of the crude oil is higher than the height of the sand limiting plate 10, the crude oil can overflow the sand limiting plate 10 and continuously flow into the separation settling section and the stabilization section in the tank body 41.

In this embodiment, the sand washing assembly 20 penetrates the tank 41, the part of the sand washing assembly 20 located inside the tank 41 is located in the pre-separation section, and the sand washing assembly 20 is used for introducing the liquid outside the tank 41 into the pre-separation section inside the tank 41. The sand washing assembly 20 penetrates the interior of the tank 41 from the exterior of the tank 41 to wash the pre-separated section of the tank 41. The sand discharge box 30 is positioned outside the tank body 41, the sand discharge box 30 is positioned below the sand washing assembly 20, the sand discharge box 30 is connected with the bottom of the tank body 41, and the sand discharge box 30 is communicated with the inside of the tank body 41. In this embodiment, the sand discharging box 30 is used to collect the gravel washed down by the sand washing assembly 20, and the sand discharging port of the sand discharging box 30 is opened to discharge the gravel to the sewage tank 70 outside the tank 41.

In this embodiment, when the sand is to be cleaned, the sand washing assembly 20 starts to work to wash away the accumulated sand in the tank 41, and the gravel moves and accumulates in the sand discharge box 30.

Example two

As shown in fig. 2, the present embodiment further defines, on the basis of the first embodiment, that the sand washing assembly 20 includes: a water conduit 21, a distribution pipe 22 and a plurality of nozzles 23. One end of the water conduit 21 is positioned outside the tank body 41, and the other end of the water conduit 21 passes through the tank body 41 to communicate with one end of the distribution pipe 22. One end of the water conduit 21 is connected with an external water source to introduce the sand washing water into the tank 41. The distribution pipe 22 is located in a pre-separation section inside the tank 41, and the other end of the distribution pipe 22 is closed. One end of the nozzle 23 communicates with the distribution pipe 22, and the other end of the nozzle 23 faces the inner wall of the can 41 or the bottom of the can 41. The nozzles 23 are arranged at intervals, sand washing water enters the water conduit 21 and then enters the distribution pipe 22, then the sand washing water is sprayed out from the nozzles 23 to wash the gravel accumulated in the pre-separation section, the washed gravel moves and accumulates in the sand discharge box 30, and the sand discharge port of the sand discharge box 30 is opened to discharge the gravel to the sewage pool 70 outside the tank body 41.

Further, as shown in fig. 3, the distribution pipe 22 includes: two distribution sub-tubes 24. The distributing sub-pipe 24 is of an arc-shaped bent pipe structure, and the distributing sub-pipe 24 is protruded towards the side wall of the tank body 41. In this embodiment, the two distribution sub-pipes 24 can introduce water into two sides in the tank 41, the nozzles 23 can wash and sand-remove sand from two sides in the tank 41, and wash inner walls at two ends of the tank 41 and inner walls at side surfaces, so that the sand-removing water introduced by the distribution sub-pipes 24 can wash and remove sand corners in the tank 41 more comprehensively, and the sand-removing effect is better.

In one possible implementation, the distribution sub-pipe 24 is a part of an oval shape so that the distribution sub-pipe 24 can be close to the inner walls of both ends and the inner walls of both sides of the tank 41.

Further, as shown in fig. 3, two distribution sub-pipes 24 are disposed to be axisymmetrical with respect to the axial direction of the water conduit 21. In this embodiment, the two distributing sub-pipes 24 are axisymmetric, and can uniformly introduce water in the water conduit 21 for sand washing.

Further, as shown in fig. 2 and 3, the other end of at least one of the plurality of nozzles 23 faces the inner wall of the pot 41, and the other end of the remaining at least one of the nozzles 23 faces in a direction close to the drag flask 30. The plurality of nozzles 23 spray water toward the inner wall of the tank 41 and the sand discharge box 30, respectively, so that a part of the nozzles 23 wash the gravel near the inner wall of the tank 41, the gravel can move toward the bottom of the tank 41, and at the same time, another part of the nozzles 23 wash the gravel from the bottom of the sand discharge box 30 toward the sand discharge box 30, and the gravel washed from the inner wall of the tank 41 and the gravel at the bottom can be together washed into the sand discharge box 30 and collected for subsequent discharge. In this embodiment, the nozzles 23 can further wash all the corners of accumulated sand in the tank 41, so that the sand washing and cleaning effects are better.

Further, as shown in fig. 2, the sand discharge box 30 includes: a tank 31 and an electric valve 32. The box 31 is positioned outside the tank 41, the box 31 is positioned below the sand washing assembly 20, the box 31 is connected with the bottom of the tank 41, and the box 31 is communicated with the inside of the tank 41. Grit flushed by the nozzle 23 can enter the tank 31 from the bottom of the tank 41, and the electric valve 32 is arranged at the bottom of the tank 31. When the sand needs to be discharged, the electric valve 32 is controlled to be opened, and the gravel is discharged into the sewage tank 70.

Further, as shown in fig. 1 and 4, the sand washing and discharging device of the horizontal three-phase separator further includes a circulating water pump 50 and a PLC controller 60. The water outlet end of the circulating water pump 50 is connected with one end of the water conduit 21. In this embodiment, the circulating water pump 50 delivers the sand wash water into the penstock 21. The PLC controller 60 is electrically connected to the circulating water pump 50 and the electric valve 32. In this embodiment, the opening and closing of the circulating water pump 50 and the opening and closing of the electric valve 32 can be periodically and periodically controlled by a PLC Controller 60(Programmable Logic Controller). The PLC 60 realizes the automatic control of the electric valve 32 and the circulating water pump 50 to start and stop periodically, realizes the automatic sand cleaning and discharging work and improves the working efficiency.

Further, the water inlet end of the circulating water pump 50 is connected with the water outlet of the tank 41. After the crude oil in the tank body 41 is subjected to oil-water-gas three-phase separation, the separated water is discharged out of the tank body 41, and at the moment, the separated water can be introduced into the circulating water pump 50 to perform sand washing and discharging work, so that the water resource is recycled, and the water resource is saved.

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

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

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

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a sand washing and discharging device of horizontal three-phase separator which characterized in that includes: the sand-limiting plate (10), the sand washing component (20) and the sand discharging box (30);

the sand limiting plate (10) is fixedly arranged at the tail end of a pre-separation section in a tank body (41) of the three-phase separator (40), two ends and the bottom end of the sand limiting plate are fixedly connected with the inner wall and the bottom of the tank body (41) respectively, and a spacing distance is reserved between the top end of the sand limiting plate and the top of the tank body (41);

the sand washing assembly (20) penetrates into the tank body (41), and the part of the sand washing assembly positioned in the tank body (41) is positioned in the pre-separation section and used for introducing liquid outside the tank body (41) into the pre-separation section inside the tank body (41);

the sand discharging box (30) is positioned outside the tank body (41), is positioned below the sand washing assembly (20), is connected with the bottom of the tank body (41), and is communicated with the inside of the tank body (41).

2. A sand washing and discharge arrangement of a horizontal three-phase separator according to claim 1, characterized in that the sand washing assembly (20) comprises: a water conduit (21), a distribution pipe (22) and a plurality of nozzles (23);

one end of the water conduit (21) is positioned outside the tank body (41), and the other end of the water conduit penetrates through the tank body (41) and is communicated with one end of the distribution pipe (22);

the distribution pipe (22) is positioned in the tank body (41), and the other end of the distribution pipe is closed;

one end of the nozzle (23) is communicated with the distribution pipe (22), and the other end of the nozzle is communicated with the inside of the tank body (41); the plurality of nozzles (23) are arranged at intervals.

3. A sand washing and discharging device of a horizontal three-phase separator according to claim 2, characterized in that said distributing pipe (22) comprises: two distribution sub-pipes (24);

the distribution sub-pipe (24) is of an arc-shaped bent pipe structure and is protruded towards the side wall of the tank body (41).

4. A sand washing and discharging device of a horizontal three-phase separator according to claim 3, wherein the sand discharging box (30) comprises: a box body (31) and an electric valve (32);

the box body (31) is positioned outside the tank body (41), is positioned below the sand washing assembly (20), is connected with the bottom of the tank body (41), and is communicated with the inside of the tank body (41);

the electric valve (32) is arranged at the bottom of the box body (31).

5. The sand washing and discharging device of the horizontal three-phase separator as claimed in claim 4, further comprising a circulating water pump (50) and a PLC (60);

the water outlet end of the circulating water pump (50) is connected with one end of the water conduit (21);

the PLC controller (60) is electrically connected with the circulating water pump (50) and the electric valve (32).

6. The sand washing and discharging device of the horizontal three-phase separator as claimed in claim 5, wherein the water inlet end of the circulating water pump (50) is connected with the water outlet of the tank body (41).

7. A sand washing and discharging device of a horizontal three-phase separator according to claim 3, wherein the other end of one part of the plurality of nozzles (23) faces the inner wall of the tank (41), and the other end of the other part of the plurality of nozzles (23) faces a direction approaching the sand discharging box (30).

8. A sand washing and discharging device of a horizontal three-phase separator according to claim 3, characterized in that the two distribution sub-pipes (24) are arranged axisymmetrically with respect to the axial direction of the water conduit (21).