CN210135454U - Natural gas pipeline methanol filling device - Google Patents

Natural gas pipeline methanol filling device Download PDF

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Publication number
CN210135454U
CN210135454U CN201920566144.1U CN201920566144U CN210135454U CN 210135454 U CN210135454 U CN 210135454U CN 201920566144 U CN201920566144 U CN 201920566144U CN 210135454 U CN210135454 U CN 210135454U
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China
Prior art keywords
methanol
natural gas
liquid supply
jet pump
pipeline
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CN201920566144.1U
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Chinese (zh)
Inventor
马威
王心亮
孙晓辉
马洪伟
李涛
张宁
荚雅棋
官春艳
乔文序
黄璐
卞家忠
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Petrochina Co Ltd
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Petrochina Co Ltd
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Abstract

The utility model provides a natural gas line filling methyl alcohol device, include: the device comprises a jet pump, a first liquid supply pipeline, a methanol evaporation cylinder, a second liquid supply pipeline and a methanol storage barrel, wherein the jet pump is communicated with a natural gas pipeline; one end of the first liquid supply pipeline is communicated with the jet pump, and the other end of the first liquid supply pipeline is communicated with the upper part of the methanol evaporation cylinder; one end of the second liquid supply pipeline is communicated with the lower part of the methanol evaporation cylinder, and the other end of the second liquid supply pipeline is communicated with the lower part of the methanol storage barrel. The utility model discloses can realize methyl alcohol and annotate in succession, prevent effectively that the natural gas line from taking place to freeze stifled.

Description

Natural gas pipeline methanol filling device
Technical Field
The utility model relates to a field is failed in natural gas exploitation and collection especially relates to a natural gas line filling methyl alcohol device.
Background
When the natural gas is produced in the oil-gas well in winter, because the temperature is low and the produced gas contains water, the problem of freezing and blocking of a natural gas pipeline easily occurs in the process of gathering and transporting the natural gas, and the normal production and the system safety are influenced. According to the problem of freezing and blocking of the natural gas pipeline under the low-temperature working condition, in addition to pipeline heat tracing measures, methanol is periodically or irregularly filled into a part of pipeline sections on site, the freezing point of water is reduced, and water in the natural gas is prevented from freezing, but the periodically filled methanol can flow forwards along the pipeline mainly in the form of methanol slugs under the action of natural gas flow, the natural gas in the subsequent pipeline cannot effectively contact with a methanol solution, and the freezing and blocking problems are still easy to occur, so the periodically or irregularly filled methanol is generally used for unblocking the pipeline which is slightly frozen and blocked, and the effect on preventing the freezing and blocking of the natural gas pipeline is not obvious because the periodically or irregularly filled methanol cannot be continuously mixed with the natural gas.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a natural gas line filling methyl alcohol device can realize methyl alcohol and annotate in succession, prevents effectively that natural gas line from taking place to freeze stifled, and the device includes: a jet pump, a first liquid supply pipeline, a methanol evaporation cylinder, a second liquid supply pipeline and a methanol storage barrel, wherein,
the jet pump is communicated with a natural gas pipeline;
one end of the first liquid supply pipeline is communicated with the jet pump, and the other end of the first liquid supply pipeline is communicated with the upper part of the methanol evaporation cylinder;
one end of the second liquid supply pipeline is communicated with the lower part of the methanol evaporation cylinder, and the other end of the second liquid supply pipeline is communicated with the lower part of the methanol storage barrel.
The embodiment of the utility model provides an in, jet pump and natural gas line intercommunication, inflow and outflow that can be used to the natural gas, the one end intercommunication jet pump of first liquid supply line, the upper portion of other end intercommunication methyl alcohol evaporation section of thick bamboo, the one end intercommunication methyl alcohol evaporation section of thick bamboo lower part of second liquid supply line, the lower part of bucket is stored to other end intercommunication methyl alcohol, therefore, methyl alcohol accessible methyl alcohol evaporation section of thick bamboo in the methyl alcohol storage bucket gets into the jet pump, mix with the natural gas in the jet pump, when depositing methyl alcohol in the methyl alcohol storage bucket always, the sustainable natural gas that flows in jet pump and jet pump of methyl alcohol mixes, thereby effectively prevent that natural gas line from taking place to freeze stifled.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts. In the drawings:
fig. 1 is a schematic structural diagram of a device for filling methanol into a natural gas pipeline according to the present invention;
fig. 2 is a schematic structural diagram of a jet pump according to an embodiment of the present invention;
FIG. 3 shows a process for achieving continuous methanol injection using the above-described natural gas line methanol injection apparatus.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
Regularly or irregularly annotate methyl alcohol among the prior art in the natural gas pipeline to prevent that the natural gas pipeline from freezing the effect in the aspect of stifled not obvious, the utility model discloses the people think if can provide one kind to the device of continuously annotating methyl alcohol in the natural gas pipeline, then can effectively prevent that the natural gas pipeline from freezing stifled.
Fig. 1 is the utility model provides a natural gas line annotates structure schematic diagram of methyl alcohol device, as shown in fig. 1, the device includes: a jet pump 1, a first liquid supply pipeline 2, a methanol evaporation cylinder 3, a second liquid supply pipeline 4 and a methanol storage barrel 5, wherein,
the jet pump 1 is communicated with a natural gas pipeline;
one end of the first liquid supply pipeline 2 is communicated with the jet pump 1, and the other end is communicated with the upper part of the methanol evaporation cylinder 3;
one end of the second liquid supply pipeline 4 is communicated with the lower part of the methanol evaporation cylinder 3, and the other end is communicated with the lower part of the methanol storage barrel 5.
The embodiment of the utility model provides an in, jet pump and natural gas line intercommunication, inflow and outflow that can be used to the natural gas, the one end intercommunication jet pump of first liquid supply line, the upper portion of other end intercommunication methyl alcohol evaporation section of thick bamboo, the one end intercommunication methyl alcohol evaporation section of thick bamboo lower part of second liquid supply line, the lower part of bucket is stored to other end intercommunication methyl alcohol, therefore, methyl alcohol accessible methyl alcohol evaporation section of thick bamboo in the methyl alcohol storage bucket gets into the jet pump, mix with the natural gas in the jet pump, when depositing methyl alcohol in the methyl alcohol storage bucket always, the sustainable natural gas that flows in jet pump and jet pump of methyl alcohol mixes, thereby effectively prevent that natural gas line from taking place to freeze stifled.
In order to make the mixing effect of methanol and natural gas better, the methanol is preferably in a gaseous state, and in order to achieve the gaseous effect of methanol, the structure of the methanol evaporation barrel 3 can comprise various structures, and one of the following embodiments is given.
In one embodiment, the methanol evaporation cartridge 3 includes: a cylinder 31; a cylinder cover 32 connected to the cylinder 31;
a bracket 33 fixedly arranged at the middle part of the lower end surface of the cylinder cover 32;
a perforated tray 34 connected to the lower end of the support 33;
a filter element 35 sleeved on the bracket 33 and arranged on the porous tray 34.
In the above embodiment, the cover 32 is used to prevent methanol from evaporating, and the holder 33 and the porous tray 34 are used to support the filter element 35 such that the filter element 35 is spaced a set distance from the bottom of the cylinder 31, and the lower portion of the cylinder 31 is used to store methanol flowing from the methanol storage tub 5. Porous tray 34 makes methyl alcohol upwards permeate through the siphon effect, and its shape suits with the shape of methyl alcohol evaporation cylinder 3, and filter core 35 makes upwards methyl alcohol through the siphon effect become gaseous state by liquid, avoids a large amount of liquid methyl alcohol to be inhaled the jet pump, can make methyl alcohol and natural gas mixture more even at last.
In one embodiment, the methanol evaporation cartridge 3 further includes: a stop 36 adjustably positioned on the support 33 and above the filter cartridge, for lowering the top of the filter cartridge 35 below the first liquid supply line 2.
In the above embodiment, the stop 36 is provided to keep the top of the filter element 35 lower than the first liquid supply line 2, so as to allow the methanol to flow smoothly into the first liquid supply line, without responding to the mixing of the methanol with the natural gas.
In order to make the methanol output upwards from the filter element 35 gaseous, it is also necessary to satisfy some conditions, and examples in which this effect is achieved are given below.
In one embodiment, the top of the methanol storage barrel 5 is lower than the top of the filter element in the methanol evaporation cylinder 3.
In the above embodiment, a part of the filter element 35 is immersed in the methanol solution, and another part is exposed, so as to prevent the methanol solution in the methanol evaporation cylinder 3 from failing to filter the filter element 35 and affecting the mixing effect of natural gas and methanol.
In one embodiment, the device for filling methanol into a natural gas pipeline further comprises a first regulating valve 21 disposed on the first liquid supply pipeline 2, a second regulating valve 41 disposed on the second liquid supply pipeline 4, wherein,
the first regulating valve 21 is used for regulating the speed of the methanol in the methanol evaporation cylinder 3 flowing into the jet pump 1;
the second regulating valve 41 is used to regulate the flow rate of methanol in the methanol storage barrel 5 into the methanol evaporation cylinder 3.
In the above embodiment, by adjusting the speed at which methanol finally flows into the jet pump 1, the mixing ratio and speed of methanol and natural gas can be controlled, so that the mixing process is more flexible and easier to be applied practically.
In specific implementation, the jet pump 1 may have various structures, the jet pump 1 is used for being connected to a natural gas pipeline, and is used for mixing the inflowing natural gas with methanol and then flowing back to the natural gas pipeline, and one of the structures of the jet pump 1 is given below.
Fig. 2 is a schematic structural view of a jet pump in an embodiment of the present invention, and in an embodiment, the jet pump 1 includes a suction port 12, a nozzle 11, a mixing section 13, and a diffuser section 14, which are sequentially disposed along a pump body of the jet pump 1, wherein,
the suction inlet 12 is arranged near the nozzle 11 and is used for communicating the jet pump 1 with the first liquid supply pipeline 2;
the nozzle 11 is used for inflow of natural gas;
the mixing section 13 is used for mixing natural gas and methanol;
the diffuser section 14 is used for mixed natural gas and methanol outflow into the natural gas pipeline.
In the above embodiment, the natural gas flows in from the nozzle 11 and then enters the mixing section 13, the suction port is filled with methanol gas, and then enters the mixing section 13, the natural gas and methanol in the mixing section 13 are fully mixed, and the mixed gas flows in the diffuser section 14 until flowing out to the natural gas pipeline. The nozzle 11, mixing section 13 and diffuser section 14 may be threaded.
In specific implementation, the methanol storage barrel 5 is used for storing methanol, and the structure of the methanol storage barrel 5 can be various, and one of the structures is given below.
In one embodiment, the methanol storage tub 5 includes a dosing hole 51 for injecting methanol into the methanol storage tub 5.
In one embodiment, the methanol storage barrel 5 comprises an exhaust hole 52 for exhausting air, and when methanol is injected into the methanol storage barrel 5, the exhaust hole 52 is opened to maintain normal pressure in the methanol storage barrel 5, so as to ensure the safety of the device for injecting methanol into a natural gas pipeline.
In one embodiment, the methanol storage tank 5 further comprises a pressure gauge 53 for:
the pressure in the methanol storage barrel 5 was monitored.
In the above embodiment, when the pressure in the methanol storage tank 5 monitored by the pressure gauge 53 exceeds the set value, the first regulating valve 21 and/or the second regulating valve 41 are/is closed, so as to maintain the normal pressure in the methanol storage tank 5 and ensure the safety of the device for filling the natural gas pipeline with methanol.
In one embodiment, the filter element 35 is a porous filter element, so that the methanol liquid can be changed into methanol gas through the filter element 35 better, and the methanol and the natural gas can be mixed more uniformly.
Fig. 3 is a process for implementing continuous methanol injection by using the above-mentioned natural gas line methanol injection device, as shown in fig. 3, the process includes:
step 301, opening the first regulating valve 21 and the second regulating valve 42;
step 302, keeping the top of the methanol storage barrel 5 lower than the top of the filter element in the methanol evaporation barrel 3, and soaking the lower half part of the filter element 35 in the methanol evaporation barrel 3 in a methanol solution;
step 303, a methanol gaseous flow jet pump 1;
when natural gas flows through the nozzle 11 of the jet pump 1, negative pressure is formed near the rear end of the nozzle 11 of the jet pump 1 and near the suction inlet 12, so that methanol in the methanol evaporation cylinder 3 is adsorbed, the filter element 35 adsorbs the methanol upwards through a siphon effect, the methanol becomes gaseous methanol after passing through the filter element 35, and the gaseous methanol continuously flows into the jet pump 1 through the first liquid supply pipeline 2;
step 304, mixing natural gas with methanol gas;
the methanol gas flowing into the jet pump 1 through the suction inlet 12 is mixed with the natural gas flowing through the mixing section 12 of the jet pump 1, and the mixed gas is more uniformly mixed in the diffusion section, so that the continuous mixing of the natural gas and the methanol is realized, the mixed gas flows into a natural gas pipeline, and the freezing and blocking of the natural gas pipeline can be avoided.
The embodiment of the utility model provides an in, jet pump and natural gas line intercommunication, inflow and outflow that can be used to the natural gas, the one end intercommunication jet pump of first liquid supply line, the upper portion of other end intercommunication methyl alcohol evaporation section of thick bamboo, the one end intercommunication methyl alcohol evaporation section of thick bamboo lower part of second liquid supply line, the lower part of bucket is stored to other end intercommunication methyl alcohol, therefore, methyl alcohol accessible methyl alcohol evaporation section of thick bamboo in the methyl alcohol storage bucket gets into the jet pump, mix with the natural gas in the jet pump, when depositing methyl alcohol in the methyl alcohol storage bucket always, the sustainable natural gas that flows in jet pump and jet pump of methyl alcohol mixes, thereby effectively prevent that natural gas line from taking place to freeze stifled.
In addition, the filter element in the methanol evaporation barrel enables upward methanol to be changed into a gaseous state from a liquid state through a siphon effect, a large amount of liquid methanol is prevented from being sucked into the jet pump, and finally the methanol and the natural gas can be mixed more uniformly. By adjusting the speed of the methanol which finally flows into the jet pump 1, the mixing proportion and speed of the methanol and the natural gas can be controlled, so that the mixing process is more flexible and is easier for practical application. When the pressure in the methanol storage barrel 5 monitored by the pressure gauge 53 exceeds a set value, the first regulating valve 21 and/or the second regulating valve 41 are/is closed, the pressure in the methanol storage barrel 5 is maintained to be normal, and the safety of the device for filling the natural gas pipeline with the methanol is ensured.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A natural gas pipeline methanol filling device is characterized by comprising: a jet pump (1), a first liquid supply pipeline (2), a methanol evaporation cylinder (3), a second liquid supply pipeline (4) and a methanol storage barrel (5), wherein,
the jet pump (1) is communicated with a natural gas pipeline;
one end of the first liquid supply pipeline (2) is communicated with the jet pump (1), and the other end is communicated with the upper part of the methanol evaporation cylinder (3);
one end of the second liquid supply pipeline (4) is communicated with the lower part of the methanol evaporation cylinder (3), and the other end is communicated with the lower part of the methanol storage barrel (5).
2. A natural gas line methanol filling apparatus as claimed in claim 1, wherein the methanol evaporation cartridge (3) comprises: a cylinder (31); a cylinder cover (32) connected to the cylinder (31);
a bracket (33) fixedly arranged in the middle of the lower end surface of the cylinder cover (32);
a perforated tray (34) connected to the lower end of the support (33);
a filter element (35) sleeved on the bracket (33) and arranged on the porous tray (34).
3. The natural gas line methanol filling apparatus according to claim 2, wherein the methanol evaporation cylinder (3) further comprises: a stop (36) adjustably arranged on the support (33) and above the filter cartridge, for making the top of the filter cartridge (35) lower than the first liquid supply line (2).
4. The natural gas line methanol filling device according to claim 2, wherein the top of the methanol storage barrel (5) is lower than the top of the filter element in the methanol evaporation barrel (3).
5. The natural gas line methanol filling apparatus according to claim 1, further comprising a first regulating valve (21) provided on the first liquid supply line (2), and a second regulating valve (41) provided on the second liquid supply line (4), wherein,
the first regulating valve (21) is used for regulating the speed of methanol in the methanol evaporation cylinder (3) flowing into the jet pump (1);
the second regulating valve (41) is used for regulating the speed of the methanol in the methanol storage barrel (5) flowing into the methanol evaporation barrel (3).
6. The natural gas pipeline methanol filling device according to claim 1, wherein the jet pump (1) comprises a suction inlet (12), a nozzle (11), a mixing section (13) and a diffuser section (14) which are arranged in sequence along a pump body of the jet pump (1), wherein,
the suction inlet (12) is arranged near the nozzle (11) and is used for communicating the jet pump (1) and the first liquid supply pipeline (2);
the nozzle (11) is used for inflow of natural gas;
the mixing section (13) is used for mixing natural gas and methanol;
the diffuser section (14) is used for mixed natural gas and methanol outflow to a natural gas pipeline.
7. A natural gas line methanol filling apparatus as claimed in claim 1, wherein the methanol storage barrel (5) comprises a dosing hole (51).
8. The natural gas line methanol filling apparatus according to claim 1, wherein the methanol storage barrel (5) further comprises an exhaust hole (52).
9. The natural gas line methanol filling apparatus according to claim 1, wherein the methanol storage tank (5) further comprises a pressure gauge (53) for:
the pressure in the methanol storage tank (5) is monitored.
10. A natural gas line methanol filling apparatus as claimed in claim 2, wherein the filter element (35) is a porous filter element.
CN201920566144.1U 2019-04-24 2019-04-24 Natural gas pipeline methanol filling device Active CN210135454U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920566144.1U CN210135454U (en) 2019-04-24 2019-04-24 Natural gas pipeline methanol filling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920566144.1U CN210135454U (en) 2019-04-24 2019-04-24 Natural gas pipeline methanol filling device

Publications (1)

Publication Number Publication Date
CN210135454U true CN210135454U (en) 2020-03-10

Family

ID=69703722

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920566144.1U Active CN210135454U (en) 2019-04-24 2019-04-24 Natural gas pipeline methanol filling device

Country Status (1)

Country Link
CN (1) CN210135454U (en)

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