CN210289675U - A multi-functional vertical double-deck defoaming sand removal device for natural gas production technology - Google Patents
A multi-functional vertical double-deck defoaming sand removal device for natural gas production technology Download PDFInfo
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- CN210289675U CN210289675U CN201920963650.4U CN201920963650U CN210289675U CN 210289675 U CN210289675 U CN 210289675U CN 201920963650 U CN201920963650 U CN 201920963650U CN 210289675 U CN210289675 U CN 210289675U
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Abstract
The utility model discloses a multifunctional vertical double-layer defoaming and desanding device for natural gas production process, which is provided with an outer shell and an inner separation shell, wherein a tangential air inlet pipe is arranged at the upper end, a built-in defoaming vertical pipe is utilized to realize defoaming function, a horizontal drain valve at the lower end realizes liquid drainage function, a mixture entering tangentially is subjected to rotary separation, and gravel is discharged through a funnel and a sand discharge pipe at the bottom of the inner separation shell; therefore, the device can effectively remove the redundant liquid containing the foaming agent outside the equipment, reduce the using amount of the defoaming agent and realize stable and thorough defoaming; gravel and liquid settled at the bottom of the equipment are prevented from being solidified at low temperature through the self-heat-preservation heating effect of natural gas; when the sand is needed to be removed, after the pressure is released, the gravel automatically flows out of the equipment under the action of gravity, and the sand removing operation is completed.
Description
Technical Field
The utility model relates to a defoaming and desanding technology of natural gas production technology, in particular to a vertical double-layer natural gas defoaming and desanding device capable of realizing self-heating separation, liquid discharge, defoaming and desanding.
Background
At present, in the production of natural gas, due to process requirements, a sand removing device and a defoaming device are required to be respectively installed on a ground pipeline for carrying out sand removing and defoaming processes.
The sand removal process is characterized in that the gas well needs to be fractured before production, a large amount of fracturing sand needs to be injected into the underground during the fracturing process, and after the natural gas well is put into operation, the fracturing sand enters a ground gathering and transportation pipeline along with natural gas from the underground and flows at a high speed in the pipeline to wash the pipeline wall and an elbow part at a high speed, so that the pipeline wall is thinned and then is punctured, and the potential safety hazard of leakage and even combustion and explosion is caused. In view of the technical defects of the sand removal, a new sand removal device appears later, for example, a chinese utility model patent document with publication number CN207420558U, entitled "vertical double-layer natural gas self-insulation sand removal device" and publication number of 2018, 5 and 29, and the technical scheme recorded in the document can better solve the sand removal problem.
The defoaming process is that as the pressure of the gas well decreases, the produced liquid increases, and in order to carry the liquid in the gas well out of the gas well by low-flow gas, a foaming agent is generally required to be injected into the bottom of the gas well so as to change the surface tension of the liquid, generate foam, and carry the liquid out of the bottom of the gas well in the form of foam more easily; however, the foam is not easily separated in the separator, and the foam can cause the failure of subsequent equipment after entering a subsequent pipeline. Therefore, defoaming of the foam in the pipeline is required so that the subsequent separator can separate the liquid completely, which requires defoaming equipment. The conventional defoaming devices are classified into solid defoaming devices and liquid defoaming devices according to the phase state of the defoaming agent. Two kinds of ordinary chemistry fire fighting equipment are because there is not autosegregation drain, and the liquid volume of coming that contains the foaming agent liquid is inhomogeneous, can cause the defoaming agent to consume too fast when the liquid that contains a large amount of foaming agents comes, and the defoaming is incomplete, and the solid defoaming agent is regularly placed and gets into in the device, and inhomogeneous liquid that comes can lead to solid defoaming agent consumption speed not clear so that it is unclear as to have or not the defoaming agent, also can not in time supply the defoaming agent. Therefore, the excessive defoaming agent-containing liquid needs to be discharged out of the equipment, so that the flow rate of the gas-carried foam is stable, the consumption of the defoaming agent is stable, the defoaming is thorough, and the consumption of the defoaming agent is reduced.
At present, however, two sets of equipment, namely a sand removing device and a defoaming device, are connected in series on a pipeline to perform production operation, and the operation site has the disadvantages of complex process installation, large occupied space and high cost.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model provides a vertical double-layer natural gas device integrating the separation, liquid discharge, defoaming and desanding processes into a whole, which can settle the liquid containing the foaming agent and the sand in the pipeline, automatically discharge the liquid containing the foaming agent out of the device body, reduce the foaming liquid and only allow the natural gas containing the foam to uniformly and stably flow through the defoaming device, thereby uniformly, stably and thoroughly defoaming and reducing the using amount of the defoaming agent; the settled solid gravel and liquid are retained, so that the low-temperature solidification caused by heat preservation without external heat tracing can not be caused, and the liquid discharge and sand removal are not influenced.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a multi-functional vertical double-deck defoaming sand removal device for natural gas production technology which characterized in that: the inner separation shell sequentially comprises an inner shell sealing head, a middle straight tube section, a funnel and a sand discharge tube from top to bottom, an air inlet pipe close to the top sealing head is arranged along the tangential direction of the edge of the vertical shell of the outer shell, the air inlet pipe penetrates through a cavity between the outer shell and the inner separation shell, and the tangential line is welded on the middle straight tube section of the inner separation shell; a vertical defoaming vertical pipe penetrating through the top end socket of the outer shell and the end socket of the inner shell is arranged in the inner separation shell, and a defoaming assembly of a solid agent is arranged in the defoaming vertical pipe; a drain valve for draining liquid is arranged at the lower end of the inner separation shell.
And a quick-opening blind plate with an upward opening and vertically welded is arranged on the top end socket, and a defoaming liquid pipe standby interface blocked by a plug is welded on the side surface of the quick-opening blind plate through a perforation.
And the side surface of the bottom header is horizontally welded with a separated gas outlet in a penetrating manner.
In the interior separation casing, the air inlet department that corresponds the intake pipe is equipped with an scour prevention boundary belt, when avoiding the mist to get into interior separation casing in, produces the effort of excessive scour.
In the inner separation shell, the bottom of the defoaming vertical pipe is fixed with a defoaming vertical pipe grid which is horizontally arranged.
The sand discharge pipe penetrates through a flat head of a manifold at the bottom of the outer shell to be welded, and the flat head of the manifold at the bottom and the sand discharge pipe are communicated with a sand discharge valve.
The inner separation shell is fixedly connected with the inner wall of the outer shell through an inner separation shell support arranged on the outer wall of the inner separation shell.
The vertical double-layer natural gas defoaming and desanding device is integrally installed and supported through a support at the bottom.
Further, the outer shell is further provided with:
and the outer shell is also provided with a vent, a pressure gauge interface and a safety valve interface, wherein the safety valve interface is higher than the vent and the pressure gauge interface, and the vent and the pressure gauge interface are close to the bottom of the defoaming vertical pipe.
The working process of the multifunctional vertical natural gas double-layer defoaming and desanding device is as follows:
after a mixture of liquid and foam of gravel and foaming agent enters an inner separation cavity (namely the inner separation shell) through an air inlet pipe, the mixture rotates and decelerates around a space between a defoaming vertical pipe and the inner separation shell to perform gravity separation and spiral separation downwards, the separated gravel and free liquid settle in a funnel with the bottom used for settling sand, the gravel settles to the bottommost part to be settled, and the liquid is arranged at the upper part of the funnel; when the liquid exceeds the threshold liquid level of the drain valve, the drain valve is opened, and the redundant liquid containing the foaming agent is discharged outside the equipment in diameter; the foam that does not subside and contain the defoaming agent upwards gets into the defoaming riser along with the natural gas in defoaming riser grid department, and the foam flows in the middle of built-in solid agent defoaming subassembly and defoaming after the defoaming with defoaming subassembly collision reaction, and the defoaming finishes so far, and the liquid after gas and the defoaming assembles the bottom collection pipe through the clearance between shell body and interior separation shell body, reentrant separation gas outlet pipe, gets into pipeline of subordinate. In the process, the process that natural gas with a certain temperature continuously flows into the gap between the two shells is the process of heating the bottom of the inner funnel, so that the sand gravel and liquid in the sand setting funnel can not be frozen and blocked, and the drain valve can continuously and normally work. The sand discharge valve is connected outside the sand discharge pipe cavity at the bottom of the funnel, so that after pressure relief, the valve is opened, and sand gravel and partial liquid can automatically flow out of the device under the action of gravity to complete sand removing operation.
The utility model has the advantages as follows:
the device can effectively remove the redundant liquid containing the foaming agent outside the equipment, reduce the using amount of the defoaming agent and realize stable and thorough defoaming; gravel and liquid settled at the bottom of the equipment are prevented from being solidified at low temperature through the self-heat-preservation heating effect of natural gas; when the sand is needed to be removed, after the pressure is released, the gravel automatically flows out of the equipment under the action of gravity, and the sand removing operation is completed.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
Fig. 1 is a front view of the present invention.
Fig. 2 is a plan view of the present invention.
Fig. 3 is an upright sectional view of the present invention.
Fig. 4 is a horizontal sectional top view of the present invention.
In the figures, the reference numbers are: 1 quick-opening blind plate, 2 air inlet pipes, 3 separated gas outlets, 4 safety valve interfaces, 5 pressure gauge interfaces, 6 drain valves, 7 drain valve liquid discharge pipes, 8 liquid discharge valves, 9 sand discharge valves, 10 supports, 11 outer shells, 12 inner separation shells, 13 inner separation shell supports, 14 defoaming stand pipes, 15 defoaming stand pipe supports, 16 defoaming stand pipe grids, 17 anti-scouring protective belts, 18 defoaming component supports, 19 defoaming components, 20 drain valve spools, 21 horizontal lever floating balls, 22 funnels, 23 sand discharge pipes, 24 bottom headers, 25 defoaming liquid pipe spare interfaces and 26 emptying ports.
Detailed Description
As shown in fig. 1-4, a multifunctional vertical double-layer defoaming and desanding device for natural gas production process comprises an outer shell 11 and an inner separation shell 12, wherein a heat-insulating pressure-bearing cavity is arranged between the outer shell 11 and the inner separation shell 12, and an inner separation cavity is arranged in the inner separation shell 12.
The outer shell 11 sequentially comprises a top end socket, a vertical shell, a bottom end socket and a bottom collecting pipe 24 from top to bottom, the inner separation shell 12 sequentially comprises an inner shell end socket, a middle straight pipe section, a funnel 22 and a sand discharge pipe 23 from top to bottom, an air inlet pipe 2 close to the top end socket is arranged along the tangential direction of the edge of the vertical shell of the outer shell 11, the air inlet pipe 2 penetrates through a cavity between the outer shell 11 and the inner separation shell 12, and the tangential line is welded on the middle straight pipe section of the inner separation shell 12; the top end socket is provided with a quick-opening blind plate 1 with an upward opening and vertically welded, and a defoaming liquid pipe spare interface 25 blocked by a plug is welded on the side surface of the quick-opening blind plate 1 through a perforation; the side surface of the bottom header 24 is horizontally welded with the separated gas outlet 3.
The top of the inner shell sealing head is provided with a large hole, a vertical defoaming vertical pipe 14 is inserted into and welded in the inner circle of the sealing head opening, the defoaming vertical pipe 14 penetrates through the top sealing head of the outer shell 11 and the inner shell sealing head, the defoaming vertical pipe 14 is welded and fixed with the inner wall of the inner separation shell 12 through a defoaming vertical pipe bracket 15 arranged on the outer wall of the pipe, a defoaming assembly 19 of a solid agent is arranged in the defoaming vertical pipe 14, the defoaming assembly 19 is fixed in the defoaming vertical pipe 14 through a defoaming assembly bracket 18, and a defoaming vertical pipe grid 16 which is horizontally arranged is fixed at; a drain valve 6 for draining liquid is horizontally arranged at the lower end of the vertical shell of the outer shell 11.
In this embodiment, the drain valve 6 for draining liquid comprises at least one horizontal drain valve with a sealing head, the horizontal drain valve penetrates through the outer shell 11 and is connected to the inner separation shell 12 in a penetrating manner, a drain valve core 20 is vertically welded at the bottom of the blind plate end of the horizontal drain valve in a penetrating manner, a drain pipe 7 of the drain valve is welded at the outlet end of the drain valve core 20, a horizontal lever floating ball 21 is welded at the welding top of the drain valve core 20, and a drain valve 6 is arranged at the bottom of the drain pipe 7 of the drain valve; the horizontal trap is just above the funnel 22.
In interior separation casing 12, the air inlet department that corresponds intake pipe 2 is equipped with an anti-scour protection area 17, and this anti-scour protection area 17 has certain thickness, when can avoiding the mist to get into interior separation casing 12 in, produces the effort of excessive scour.
The sand discharge pipe 23 penetrates through a flat head of a bottom header 24 of the outer shell 11 to be welded, and the flat head of the bottom header 24 and the sand discharge pipe 23 are communicated with the sand discharge valve 9.
The inner separation shell 12 is fixedly connected with the inner wall of the outer shell 11 through an inner separation shell bracket 13 arranged on the outer wall of the inner separation shell 12.
The vertical double-layer natural gas defoaming and desanding device is integrally installed and supported through a support 10 at the bottom.
Further, the outer housing 11 is further configured with:
and the outer shell 11 is also provided with a vent 26, a pressure gauge interface 5 and a safety valve interface 4, wherein the safety valve interface 4 is higher than the vent 26 and the pressure gauge interface 5, and the vent 26 and the pressure gauge interface 5 are close to the bottom of the defoaming vertical pipe 14.
The working process of the multifunctional vertical natural gas double-layer defoaming and desanding device is as follows:
after the mixture of liquid and foam with gravel and foaming agent enters the inner separation cavity (namely the inner separation shell 12) through the air inlet pipe 2, the mixture rotates and decelerates around the space between the defoaming vertical pipe 14 and the inner separation shell 12 to perform gravity separation and spiral separation downwards, the separated gravel and free liquid settle in a funnel 22 with the bottom used for settling sand, the gravel settles to the bottommost part and the liquid is deposited on the upper part of the funnel 22; when the liquid exceeds the horizontal liquid level of the horizontal lever floating ball 21, the horizontal drain valve 6 is opened to discharge the redundant liquid diameter containing the foaming agent out of the equipment; foam containing defoaming agent that does not subside upwards gets into defoaming riser 14 along with the natural gas in defoaming riser grid 16 department, and the foam flows in the gap between built-in solid defoaming stick and defoaming after the collision reaction with the defoaming stick, and the defoaming finishes so far, and gaseous and liquid after the defoaming assemble to bottom collection pipe 24 through the clearance between shell body 11 and interior separation shell body 12, reentrant separation gas outlet pipe, get into the pipeline of subordinate. In the process, the process that natural gas with certain temperature continuously flows into the gap between the two shells is the process of heating the bottom of the inner funnel, so that the gravel and liquid in the funnel 22 are prevented from being frozen and blocked, and the drain valve 6 can continuously and normally work. The sand discharge valve 9 is connected outside the sand discharge pipe 23 cavity at the bottom of the funnel 22, so after pressure relief, the valve is opened, and sand gravel and partial liquid can flow out of the equipment by itself under the action of gravity, and the sand removing operation is completed.
Claims (9)
1. The utility model provides a multi-functional vertical double-deck defoaming sand removal device for natural gas production technology which characterized in that: the sand-removing device comprises an outer shell (11) and an inner separation shell (12), wherein the outer shell (11) sequentially comprises a top end socket, a vertical shell, a bottom end socket and a bottom header (24) from top to bottom, the inner separation shell (12) sequentially comprises an inner shell end socket, a middle straight pipe section, a funnel (22) and a sand discharge pipe (23) from top to bottom, an air inlet pipe (2) close to the top end socket is arranged in the tangential direction of the edge of the vertical shell of the outer shell (11), the air inlet pipe (2) penetrates through a cavity between the outer shell (11) and the inner separation shell (12) and is welded on the middle straight pipe section of the inner separation shell (12) in a tangential; a vertical defoaming vertical pipe (14) penetrating through the top end socket of the outer shell (11) and the end socket of the inner shell is arranged in the inner separation shell (12), and a defoaming assembly (19) of a solid agent is arranged in the defoaming vertical pipe (14); a drain valve (6) for draining liquid is arranged at the lower end of the inner separation shell (12).
2. The multifunctional vertical double-layer defoaming and desanding device for the natural gas production process according to claim 1, characterized in that: the top end socket is provided with a quick-opening blind plate (1) with an upward vertical opening, and the side surface of the quick-opening blind plate (1) is perforated and welded with a defoaming liquid pipe standby interface (25) blocked by a plug.
3. The multifunctional vertical double-layer defoaming and desanding device for the natural gas production process according to claim 1, characterized in that: the side surface of the bottom header (24) horizontally penetrates through and is welded with the separated gas outlet (3).
4. The multifunctional vertical double-layer defoaming and desanding device for the natural gas production process according to claim 1, characterized in that: an anti-scouring protective belt (17) is arranged in the inner separating shell (12) corresponding to the air inlet of the air inlet pipe (2).
5. The multifunctional vertical double-layer defoaming and desanding device for the natural gas production process according to claim 1, characterized in that: in the inner separation shell (12), a defoaming vertical pipe grid (16) which is horizontally arranged is fixed at the bottom of the defoaming vertical pipe (14).
6. The multifunctional vertical double-layer defoaming and desanding device for the natural gas production process according to claim 1, characterized in that: the sand discharge pipe (23) penetrates through a flat head of a bottom header (24) of the outer shell (11) to be welded, and the flat head of the bottom header (24) and the sand discharge pipe (23) are communicated with the sand discharge valve (9).
7. The multifunctional vertical double-layer defoaming and desanding device for the natural gas production process according to claim 1, characterized in that: the inner separation shell (12) is fixedly connected with the inner wall of the outer shell (11) through an inner separation shell bracket (13) arranged on the outer wall of the inner separation shell (12).
8. The multifunctional vertical double-layer defoaming and desanding device for the natural gas production process according to claim 1, characterized in that: the vertical double-layer natural gas defoaming and desanding device is integrally installed and supported through a support (10) at the bottom.
9. The multifunctional vertical double-layer defoaming and desanding device for the natural gas production process according to claim 1, characterized in that: the outer shell (11) is further provided with a vent hole (26), a pressure gauge interface (5) and a safety valve interface (4), wherein the safety valve interface (4) is higher than the vent hole (26) and the pressure gauge interface (5), and the vent hole (26) and the pressure gauge interface (5) are close to the bottom of the defoaming vertical pipe (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920963650.4U CN210289675U (en) | 2019-06-25 | 2019-06-25 | A multi-functional vertical double-deck defoaming sand removal device for natural gas production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920963650.4U CN210289675U (en) | 2019-06-25 | 2019-06-25 | A multi-functional vertical double-deck defoaming sand removal device for natural gas production technology |
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| CN210289675U true CN210289675U (en) | 2020-04-10 |
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| CN201920963650.4U Active CN210289675U (en) | 2019-06-25 | 2019-06-25 | A multi-functional vertical double-deck defoaming sand removal device for natural gas production technology |
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| CN (1) | CN210289675U (en) |
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- 2019-06-25 CN CN201920963650.4U patent/CN210289675U/en active Active
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