CN112432055A - Black powder sampling and real-time monitoring device for natural gas conveying pipe network and using method thereof - Google Patents
Black powder sampling and real-time monitoring device for natural gas conveying pipe network and using method thereof Download PDFInfo
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- CN112432055A CN112432055A CN202011459887.2A CN202011459887A CN112432055A CN 112432055 A CN112432055 A CN 112432055A CN 202011459887 A CN202011459887 A CN 202011459887A CN 112432055 A CN112432055 A CN 112432055A
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- 239000000843 powder Substances 0.000 title claims abstract description 142
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 136
- 239000003345 natural gas Substances 0.000 title claims abstract description 68
- 238000005070 sampling Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012806 monitoring device Methods 0.000 title claims abstract description 16
- 239000006096 absorbing agent Substances 0.000 claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 35
- 239000007789 gas Substances 0.000 claims description 30
- 230000005540 biological transmission Effects 0.000 claims description 24
- 238000012544 monitoring process Methods 0.000 claims description 21
- 229910052742 iron Inorganic materials 0.000 claims description 17
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- 230000000977 initiatory effect Effects 0.000 claims 1
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- 238000004458 analytical method Methods 0.000 abstract description 2
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- 230000013011 mating Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 101150114468 TUB1 gene Proteins 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
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- 238000009700 powder processing Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- RAQDACVRFCEPDA-UHFFFAOYSA-L ferrous carbonate Chemical compound [Fe+2].[O-]C([O-])=O RAQDACVRFCEPDA-UHFFFAOYSA-L 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
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- 239000011593 sulfur Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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Abstract
The invention discloses a black powder sampling and real-time monitoring device for a natural gas conveying pipe network and a using method thereof, wherein the device comprises a container barrel, a black powder absorber, an air inlet pipeline and an air outlet pipeline, wherein the top end of the container barrel is provided with an end cover; the bottom of the container barrel is provided with a discharge pipe, and the discharge pipe is provided with a valve. The invention discloses a black powder sampling and real-time monitoring device for a natural gas conveying pipe network, which traps black powder by adopting a method of combining a permanent magnet rod and a permanent magnet conical spiral coil, has the advantages of high separation efficiency and strong filtering effect, and overcomes the defects of the conventional black powder treatment method; meanwhile, a relational expression of the total black powder amount in the whole pipeline and the pressure value in the pipeline can be established, and the method has important significance for judging the black powder composition of the pipeline, cause analysis and the like.
Description
Technical Field
The invention relates to the technical field of energy transportation, in particular to a black powder sampling and real-time monitoring device for a natural gas conveying pipe network and a using method thereof.
Background
The black powder is a common pollutant in natural gas long-distance pipelines and pipe networks and consists of iron sulfide, iron carbonate, iron oxide, sulfur, sand grains and the like. The black powder can cause a series of problems of reduction of pipeline transportation volume, blockage of instruments and valves, reduction of compressor compression efficiency and the like, and the normal transportation of natural gas and the normal use of downstream users are seriously influenced. The problem of black powder contamination of the transmission pipeline occurs at the earliest in countries where natural gas pipelines are constructed earlier, such as the united states, canada, and the like. In recent years, with the large-scale construction and successive investment of gas transmission pipelines in China, black powder gradually appears in the gas transmission pipeline network.
The problem of black powder generated when sea gas of the Chinese sea oil lands in an external pipeline is particularly common, the corrosion growth of the inner wall of the pipeline is accelerated, and important valves and metering pressure regulating equipment are polluted, however, the problem of black powder of a natural gas pipeline is not sufficiently considered at home. Because the dust content of the gas transported by the pipeline at the inlet of the compressor of the long-distance pipeline network is required to be micron-sized, in some regions, after a natural gas source, a Liquefied Natural Gas (LNG) source and a gas source of an external enterprise are mixed and transported, the accumulated efficiency is often reduced by a cyclone separator and a horizontal filter of a branch transportation station or a last station which rely on accumulated dust removal due to poor selectivity of the filtration efficiency on the size of particulate matters, the actual effect cannot reach the design performance, and the problem is often more troublesome.
The literature research and the practical situation in the industry, such as the distribution rule and the clearing measure of black powder in the natural gas external transportation pipeline (see No. 6 of volume 47 of the chemical industry of petroleum and natural gas), the shallow analysis of black powder accumulation reasons of the natural gas pipeline (see journal paper of 2018, month 5 in chemical management), and the like, show that the current methods for treating the black powder in the natural gas pipeline mainly comprise the following methods: one is the filter treatment by relying on the traditional natural gas station, but the filter element needs to be replaced regularly and the practical operation difficulty is large; the other method is to clean the conveying pipeline regularly, but the method is labor-consuming and time-consuming, has large workload, and can cause the problems of pipeline blockage and serious blockage of instrument valves of the natural gas station due to the predicted insufficient black powder amount.
In addition, the current black powder processing method in the natural gas pipeline mainly depends on a cyclone separator and a horizontal filter of a branch transmission station or a gas transmission end station to process the mixture of black powder, other impurities, free water and the like, the cyclone separator and the horizontal filter are not only easy to be blocked by the free water to cause great reduction of separation efficiency, but also have poor filtering effect on iron-based black powder because the filtering precision of the cyclone separator and the horizontal filter is micron-sized and is close to the submicron-sized particle size of the iron-based black powder, and the filter used in the natural gas station is generally fixed in the station and cannot be moved and is not suitable for monitoring and evaluating the black powder distribution condition in any section of the natural gas pipeline in real time.
Disclosure of Invention
The invention aims to provide a black powder sampling and real-time monitoring device for a natural gas conveying pipe network and a using method thereof, which are used for solving the problems that the existing black powder processing method is low in separation efficiency, poor in filtering effect and not suitable for real-time monitoring and evaluation of black powder distribution conditions in any section of natural gas pipeline and the like.
The invention provides a sampling and real-time monitoring device for black powder of a natural gas conveying pipe network, which comprises a container barrel, a black powder absorber, an air inlet pipeline and an air outlet pipeline, wherein an end cover is arranged at the top end of the container barrel; the bottom of container bucket is provided with the delivery pipe, be provided with the valve on the delivery pipe.
Preferably, the black powder adsorber is detachably arranged in the upper part of the container barrel; the black powder adsorber comprises a top plate, a plurality of permanent magnet rods and a permanent magnet conical spiral coil, wherein the top plate cover is arranged at the top of the container barrel, the permanent magnet rods are perpendicular to the lower surface of the top plate, the starting end of the permanent magnet conical spiral coil is fixed to the lower surface of the top plate, the permanent magnet conical spiral coil is spirally and downwards wound on the outer side of the permanent magnet rods to form the spiral coil of the multiple ramps, and the adjacent ramps of the spiral coil are tightly arranged.
Preferably, the end cover is a quick-opening end cover, and a handle ring is arranged on the end cover.
Preferably, be provided with the manometer on the admission line, the admission line with be provided with the flowmeter of admitting air and the flowmeter of giving vent to anger on the pipeline of giving vent to anger respectively, wherein, the ball valve of admitting air the manometer the flowmeter of admitting air from the natural gas advance the pipe direction to go out the pipe direction set gradually in on the admission line, the flowmeter of giving vent to anger with the ball valve of giving vent to anger from the natural gas advance the pipe direction to go out the pipe direction set gradually in on the pipeline of giving vent to anger.
Preferably, the lower part of the container barrel is provided with an air inlet pipeline butt joint, and the air inlet pipeline is in sealed connection with the air inlet pipeline butt joint through a flange; the upper portion of container bucket is provided with the pipeline butt joint of giving vent to anger, give vent to anger the pipeline with give vent to anger between the pipeline butt joint and pass through flange sealing connection.
Preferably, the air inlet pipe and the air outlet pipe are respectively disposed at both sides of the container barrel.
Preferably, the bottom of the container barrel is provided with a plurality of support legs.
Preferably, the lower part of the container barrel is provided with a black powder accumulation part for loading black powder particles falling from the black powder adsorber.
Preferably, the bottom of the container barrel is provided with a discharge pipe, the discharge pipe is provided with a discharge gate valve and a discharge ball valve, the discharge ball valve is close to the air outlet end of the discharge pipe, and the discharge gate valve is close to the air inlet end of the discharge pipe.
The invention also relates to a using method of the sampling and real-time monitoring device for the black powder of the natural gas conveying pipe network, which comprises the following steps:
step S1: the natural gas mixed with the black powder enters from an air inlet pipeline positioned at the lower part of the container barrel, sequentially passes through an air inlet ball valve, a pressure gauge and an air inlet flow meter, enters into the container barrel, sequentially passes through a black powder adsorber from bottom to top, a plurality of permanent magnet iron rods and permanent magnet conical spiral coils in the black powder adsorber are rapidly contacted with the natural gas mixed with the black powder, iron-based black powder and non-iron-based black powder in the black powder are adsorbed, the natural gas moves to the upper part of the container barrel and flows into an air outlet pipeline, and the natural gas sequentially passes through the air outlet flow meter and the air outlet ball valve and flows out from an outlet of the air;
step S2: for a period of time;
step S3: closing the air inlet ball valve and the air outlet ball valve, and isolating black powder in the container barrel;
step S4: opening a discharge pipe at the bottom of the container barrel, collecting black powder discharged from an outlet of the discharge pipe, and continuously monitoring the pressure change of a pressure gauge until the normal pressure condition is recovered;
step S5: sampling and weighing black powder in the black powder adsorber:
step S6: and according to the real-time monitoring time of the black powder adsorber, the flow changes of the air inlet flowmeter and the air outlet flowmeter, the pressure value P of the pressure gauge and the black powder mass change in the black powder adsorber, further establishing a relational expression between the total black powder amount W in the whole pipeline and the pressure value P in the pipeline.
The invention has the beneficial effects that:
the invention provides a sampling and real-time monitoring device for black powder of a natural gas conveying pipe network, wherein the black powder is adsorbed mainly by a black powder adsorber, based on the principle that a permanent magnet adsorbs iron-based black powder and wraps and clamps non-iron-based black powder, the black powder is trapped by adopting a method of combining a permanent magnet rod and a permanent magnet conical spiral ring, the sampling and real-time monitoring device has the advantages of high separation efficiency and strong filtering effect, and the defects of the conventional black powder treatment method are overcome; through the sampling and real-time monitoring device, the real-time monitoring time and the natural gas flow flowing through the black powder adsorber are calculated, a relational expression of the total black powder amount in the whole pipeline and the pressure value in the pipeline is established, and the sampling and real-time monitoring device has important significance for judging the black powder composition of the pipeline, analyzing the cause, positioning the pipeline section with larger black powder amount in the pipeline, adjusting the replacement period of a filter element of a station filter, replacing the precision of the filter element of the filter, sampling the black powder in the pipeline in real time to solve trade disputes and the like.
Drawings
Fig. 1 is a schematic structural diagram of a device for monitoring and sampling black powder in a natural gas transportation pipeline in real time according to embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of a black powder adsorber provided in embodiment 1 of the present invention;
fig. 3 is a top view of a connection portion between a top plate and a permanent magnet bar of the black powder adsorber provided in embodiment 1 of the present invention.
Detailed Description
Example 1
Embodiment 1 provides a sampling and real-time monitoring device of natural gas transmission pipe network black powder, and its structure is described in detail below.
Referring to fig. 1, the sampling and real-time monitoring device for black powder in a natural gas conveying pipe network comprises a container barrel 1, an end cover 11 is arranged at the top end of the container barrel 1, and the end cover 11 is connected with the container barrel 1 in an airtight manner.
The container barrel 1 is internally provided with a black powder adsorber 2, the lower part and the upper part of the container barrel 1 are respectively communicated with an air inlet pipeline 3 and an air outlet pipeline 4, wherein the air inlet pipeline 3 is communicated with a natural gas pipeline of an upstream gas transmission station, and the air outlet pipeline 4 is communicated with a natural gas pipeline of a downstream gas transmission station. Preferably, the inlet pipeline 3 is connected with a natural gas pipeline of an upstream gas transmission station by a flange, and the outlet pipeline 4 is connected with a natural gas pipeline of a downstream gas transmission station by a flange.
Specifically, the black powder adsorber 2 includes a top plate 20, a plurality of permanent magnet bars 21, and a permanent magnet conical coil 22. Referring to fig. 2, a top plate 20 is covered on the top of the container barrel 1, a plurality of permanent magnet iron bars 21 are vertically fixed on the lower surface of the top plate 20, the starting end of a permanent magnet conical spiral coil 22 is fixed in the middle of the lower surface of the top plate 20, the permanent magnet conical spiral coil 22 is sequentially spirally wound on the permanent magnet iron bars 21 on the outer side from top to bottom to form a spiral coil with multiple turns, and adjacent turns of the spiral coil are tightly arranged.
Specifically, referring to fig. 3, the center point "X" of the lower surface of the top plate 20 is a connection point of the permanent magnet tapered coil 22, and the remaining positions are connection points of the permanent magnet bar 21.
In order to facilitate the integral moving and moving of the black powder absorber 2, the black powder absorber 2 is detachably arranged in the upper part of the container barrel 1.
In order to enhance the black powder adsorption capacity of the black powder adsorber 2, the outer surfaces of the permanent magnet bar 21 and the permanent magnet conical spiral coil 22 are provided with spiral grooves to increase the adsorption surface area.
Specifically, the end cover 11 is a quick-opening end cover, specifically, the end cover 11 is provided with a handle ring 110, the handle ring 110 is a semicircular or semi-elliptical pipe ring or an iron ring, and two ends of the handle ring 110 are vertically arranged on the upper surface of the end cover 11.
In order to control whether natural gas flows in the gas inlet pipeline 3 and the gas outlet pipeline 4 conveniently, a gas inlet ball valve 31 is arranged in the gas inlet pipeline 3, a gas outlet ball valve 41 is arranged in the gas outlet pipeline 4, and preferably, the gas inlet ball valve 31 and the gas outlet ball valve 41 are both manual ball valves.
In order to measure the pressure change when the natural gas enters and after the black powder is adsorbed, a pressure gauge 30 is arranged on the gas inlet pipeline 3.
In order to measure the flow rate change of the natural gas in the inlet pipe 3 and the outlet pipe 4, an inlet flow meter 32 is provided on the inlet pipe 3, and an outlet flow meter 42 is provided on the outlet pipe 4.
Specifically, the air inlet ball valve 31, the pressure gauge 30 and the air inlet flow meter 32 are sequentially arranged on the air inlet pipeline 3 from the natural gas inlet pipeline direction to the natural gas outlet pipeline direction.
Further, the lower part of the container barrel 1 is provided with an air inlet pipeline butt joint, the air inlet pipeline 3 is in sealing connection with the air inlet pipeline butt joint through flanges, namely, the air inlet pipeline mating flanges 33 are arranged at the joint of the air inlet pipeline 3 and the air inlet pipeline butt joint in pairs, each air inlet pipeline mating flange 33 comprises two flanges respectively arranged on the air inlet pipeline 3 and the air inlet pipeline butt joint, the two flanges are mating flanges, and the standards, the materials, the calibers and the pressure grades of the two flanges of the mating flanges are the same, so that the mating flanges are called as.
Specifically, the outlet flow meter 42 and the outlet ball valve 41 are sequentially disposed on the outlet pipeline 4 from the inlet direction to the outlet direction of the natural gas.
Further, an air outlet pipeline butt joint is arranged at the upper part of the container barrel 1, the air outlet pipeline 4 and the air outlet pipeline butt joint are hermetically connected through a flange, namely an air outlet pipeline butt joint flange 43 is arranged at the joint of the air outlet pipeline 4 and the air inlet pipeline butt joint, and the specific connection method of the air outlet pipeline butt joint flange 43 is referred to the connection method of the air inlet pipeline mating flange 33.
As a preferred embodiment, the air inlet duct 3 and the air outlet duct 4 are respectively provided at both sides of the container tub 1.
In order to facilitate the accumulation of the black powder deposits in the container barrel 1, the lower portion of the container barrel 1 is provided with a black powder accumulation portion 10, and the black powder accumulation portion 10 is used for loading the black powder particles falling from the black powder absorber 2.
In order to improve the stability of the container barrel 1, the bottom of the container barrel 1 is provided with a plurality of supporting legs 5, the supporting legs 5 are parallel to each other, and the top ends of the supporting legs are fixed at the bottom of the container barrel 1 and the bottom ends of the supporting legs are located on the same plane.
In order to facilitate the discharge of the black powder deposit from the black powder accumulation part 10, the bottom of the container barrel 1 is provided with a discharge pipe 6, and in order to control the discharge of the black powder deposit from the discharge pipe 6, a discharge gate valve 61 and a discharge ball valve 62 are arranged on the discharge pipe 6, and the discharge ball valve 62 is a manual ball valve and is arranged near the air outlet end of the discharge pipe 6, and the discharge gate valve 61 is a manual gate valve and is arranged near the air inlet end of the discharge pipe 6.
Example 2
Embodiment 2 provides a method for using a device for sampling and monitoring black powder in a natural gas conveying pipe network in real time, and the method for using the device for sampling and monitoring black powder in a natural gas conveying pipe network provided in embodiment 1 includes the following steps:
step S1: the natural gas mixed with the black powder enters from an air inlet pipeline 3 positioned at the lower part of a container barrel 1, sequentially passes through an air inlet ball valve 31, a pressure gauge 30 and an air inlet flow meter 32, enters into the container barrel 1, sequentially passes through a black powder adsorber 2 from bottom to top, a plurality of permanent magnet iron rods 21 and permanent magnet conical spiral coils 22 in the black powder adsorber 2 are in rapid contact with the natural gas mixed with the black powder, iron-based black powder and non-iron-based black powder in the black powder are adsorbed, the natural gas moves to the upper part of the container barrel 1 and flows into an air outlet pipeline 4, sequentially passes through an air outlet flow meter 42 and an air outlet ball valve 41 and flows out from an outlet of the air outlet pipeline 4;
step S2: for hours or days;
step S3: closing the air inlet ball valve 31 and the air outlet ball valve 41, disconnecting the flange connection of the air inlet pipeline 3 and the natural gas transmission pipeline and the flange connection of the air outlet pipeline 4 and the natural gas transmission pipeline, and isolating black powder in the container barrel 1;
step S4: opening the discharge pipe 6 at the bottom of the container barrel 1, simultaneously collecting black powder discharged from the outlet of the discharge pipe 6, and continuously monitoring the pressure value change of the pressure gauge 30 until the normal pressure condition is recovered;
step S5: sampling and weighing the black powder in the black powder adsorber 2:
step S6: and establishing a relation between the total black powder amount W in the whole pipeline and the pressure value P according to the real-time monitoring time of the black powder adsorber 2, the flow changes of the air inlet flow meter 32 and the air outlet flow meter 42, the pressure value P of the pressure gauge 30 and the black powder mass change in the black powder adsorber 2.
Specifically, opening the discharge pipe 6 at the bottom of the container tub 1 comprises the steps of:
first, the drain ball valve 62 is kept closed;
opening the discharge gate valve 61;
the vent ball valve 62 is then slowly opened again for pressure relief and gas venting.
Specifically, step S5 includes the steps of:
after pressure release and gas emptying are carried out in the black powder absorber 2 to atmospheric pressure, the end cover 11 is opened;
the top plate 20, the permanent magnet rod 21 and the permanent magnet conical spiral coil 22 are connected together and directly and vertically taken out from the right upper part of the container barrel 1, iron-based black powder and non-iron-based black powder adsorbed on the permanent magnet rod 21 and the permanent magnet conical spiral coil 22 are peeled off, all the black powder are put together and weighed, and the total weight w is obtained.
Specifically, the establishment of the relation between the total black powder amount W in the whole pipeline and the pressure value P comprises the following steps:
assuming that the total black powder amount between adjacent gas transmission station yards is W, the total distance between an adjacent upstream gas transmission station yard and an adjacent downstream gas transmission station yard is L, the gas transmission flow rate is Q, the pressure value on the pressure gauge 30 is P, and the natural gas flow rate flowing through the black powder absorber 2 is Q, the calculation expression of the total black powder amount W is:
WL，P＝w/q*Q
the change of the total black powder amount W trapped by the black powder adsorber 2 is obtained by monitoring the pressure value P of the pressure gauge 30 in the air inlet pipeline 3, and the functional relation between the total black powder amount W in the whole pipeline and the pressure value P in the pipeline can be obtained.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A sampling and real-time monitoring device for black powder of a natural gas conveying pipe network is characterized by comprising a container barrel (1), a black powder adsorber (2), an air inlet pipeline (3) and an air outlet pipeline (4), wherein an end cover (11) is arranged at the top end of the container barrel (1),
the black powder adsorber (2) is arranged in the upper part of the container barrel (1), the air inlet pipeline (3) and the air outlet pipeline (4) are respectively communicated with the lower part and the upper part of the container barrel (1), and an air inlet ball valve (31) and an air outlet ball valve (41) are respectively arranged in the air inlet pipeline (3) and the air outlet pipeline (4);
the bottom of container bucket (1) is provided with delivery pipe (6), be provided with the valve on delivery pipe (6).
2. The device for sampling and monitoring black powder in a natural gas transmission pipe network in real time according to claim 1,
the black powder absorber (2) is detachably arranged in the upper part of the container barrel (1);
black powder adsorber (2) include roof (20), a plurality of permanent magnet stick (21) and permanent magnet toper helicoidal (22), roof (20) lid is located the top of container bucket (1), a plurality of permanent magnet stick (21) are perpendicular the lower surface of roof (20), the initiating terminal of permanent magnet toper helicoidal (22) is fixed in roof (20) lower surface, permanent magnet toper helicoidal (22) spiral twine downwards in the outside permanent magnet stick (21) form the helicoidal of many rings of roads, and closely set up between the adjacent ring of helicoidal.
3. The device for sampling and monitoring black powder in a natural gas conveying pipe network in real time as claimed in claim 1, wherein the end cover (11) is a quick-opening end cover, and a handle ring (110) is arranged on the end cover (11).
4. The sampling and real-time monitoring device for black powder of natural gas transmission pipe network according to claim 1, wherein the gas inlet pipe (3) is provided with a pressure gauge (30),
the air inlet pipeline (3) and the air outlet pipeline (4) are respectively provided with an air inlet flowmeter (32) and an air outlet flowmeter (42),
wherein the air inlet ball valve (31), the pressure gauge (30) and the air inlet flow meter (32) are sequentially arranged on the air inlet pipeline (3) from the natural gas inlet pipe direction to the natural gas outlet pipe direction,
the gas outlet flow meter (42) and the gas outlet ball valve (41) are sequentially arranged on the gas outlet pipeline (4) from the natural gas inlet pipeline direction to the gas outlet pipeline direction.
5. The device for sampling and monitoring black powder in a natural gas transmission pipe network in real time according to claim 4,
the lower part of the container barrel (1) is provided with an air inlet pipeline butt joint, and the air inlet pipeline (3) is hermetically connected with the air inlet pipeline butt joint through a flange;
the upper portion of container bucket (1) is provided with the pipeline butt joint of giving vent to anger, give vent to anger pipeline (4) with through flange sealing connection between the pipeline butt joint of giving vent to anger.
6. The device for sampling and monitoring black powder in a natural gas transmission pipeline network according to any one of claims 1 to 5,
the air inlet pipeline (3) and the air outlet pipeline (4) are respectively arranged on two sides of the container barrel (1).
7. The device for sampling and monitoring black powder in a natural gas transmission pipe network in real time according to claim 1,
the bottom of the container barrel (1) is provided with a plurality of supporting legs (5).
8. The device for sampling and monitoring black powder in a natural gas transmission pipe network in real time according to claim 1,
the lower part of the container barrel (1) is provided with a black powder accumulation part (10), and the black powder accumulation part (10) is used for loading black powder particles falling from the black powder absorber (2).
9. The device for sampling and monitoring black powder in a natural gas transmission pipe network in real time according to claim 4,
the bottom of the container barrel (1) is provided with a discharge pipe (6),
be provided with on discharge pipe (6) and discharge gate valve (61) and discharge ball valve (62), discharge ball valve (62) are close to the end setting of giving vent to anger of discharge pipe (6), discharge gate valve (61) are close to the inlet end setting of discharge pipe (6).
10. A method for using the device for sampling and monitoring black powder in real time for natural gas transmission pipe network according to claim 9, the method comprising the following steps:
step S1: the natural gas mixed with the black powder enters from an air inlet pipeline (3) positioned at the lower part of a container barrel (1), sequentially passes through an air inlet ball valve (31), a pressure gauge (30) and an air inlet flow meter (32), enters the container barrel (1), sequentially passes through a black powder adsorber (2) from bottom to top, a plurality of permanent magnet iron rods (21) and permanent magnet conical spiral coils (22) in the black powder adsorber (2) are in rapid contact with the natural gas mixed with the black powder, iron-based black powder and non-iron-based black powder in the black powder are adsorbed, the natural gas moves to the upper part of the container barrel (1) and flows into an air outlet pipeline (4), sequentially passes through an air outlet flow meter (42) and an air outlet ball valve (41), and flows out from an outlet of the air outlet pipeline (4);
step S2: for a period of time;
step S3: closing the air inlet ball valve (31) and the air outlet ball valve (41) and isolating black powder in the container barrel (1);
step S4: opening a discharge pipe (6) at the bottom of the container barrel (1), simultaneously collecting black powder discharged from an outlet of the discharge pipe (6), and continuously monitoring the pressure value change of a pressure gauge (30) until the normal pressure condition is recovered;
step S5: sampling and weighing the black powder in the black powder adsorber (2):
step S6: according to the real-time monitoring time of the black powder absorber (2), the flow changes of the air inlet flow meter (32) and the air outlet flow meter (42), the pressure value P of the pressure gauge (30) and the black powder mass change in the black powder absorber (2), the relational expression of the total black powder amount W in the whole pipeline and the pressure value P in the pipeline is further established.
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