CN108168642A - A kind of aperture measurement of gas flow device and its measuring method - Google Patents
A kind of aperture measurement of gas flow device and its measuring method Download PDFInfo
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- CN108168642A CN108168642A CN201810095804.2A CN201810095804A CN108168642A CN 108168642 A CN108168642 A CN 108168642A CN 201810095804 A CN201810095804 A CN 201810095804A CN 108168642 A CN108168642 A CN 108168642A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/08—Air or gas separators in combination with liquid meters; Liquid separators in combination with gas-meters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/07—Integration to give total flow, e.g. using mechanically-operated integrating mechanism
Abstract
The invention discloses a kind of aperture measurement of gas flow device and its measuring method, device includes gas-liquid-solid three-phase separator, gas measurement device and pressure-regulating device and is connected to underground gasification outlet drilling orifice in turn；The gas-liquid-solid three-phase separator reduces its influence to gas measurement, the condensate liquid for being collected simultaneously generation is focused on for the impurity composition contained in coal gas to be removed from gas phase；The gas measurement device is used to acquire the temperature of dry gas, pressure and the flow signal discharged after the separation of gas-liquid-solid three-phase separator, so as to obtain the instantaneous flow of dry gas and integrated flow；The pressure-regulating device stablizes the pressure of gas measurement device, ensures the stabilization of measurement process for controlling gas speed.Advantageous effect is：The condensate liquid in the coal gas of aperture can be effectively removed, and effectively controls aperture gas speed, so as to effectively carry out aperture measurement of gas flow.
Description
Technical field
The invention belongs to coal and Coal-seam Gas Recovery Technologies fields, and in particular to one kind goes out for measuring underground coal gasification(UCG)
The aperture measurement of gas flow device and its measuring method of gas drilling hole aperture gas flow.
Background technology
Coal of the preservation in underground can be converted into coal by coal underground gasification technology by heat effect and chemical reaction
Gas or synthesis gas, and go out gas drilling hole discharge from underground gasification furnace.The coal gas composition that underground gasification goes out gas drilling hole discharge is complicated (also referred to as
For raw gas or raw coke oven gas or wet gas), except containing major gaseous component hydrogen, carbon monoxide, methane, carbon dioxide, nitrogen
Outside, according to the difference of kinds of coals for gasification, generally also containing a large amount of water vapour, tar, solid particulate matter (lime-ash, cinder, rock
Grain object etc.), drop (coal gas water entrainment, oil droplet) etc. and a small amount of or micro hydrogen sulfide, hydrogen chloride, hydrogen cyanide, ammonia, phenol
Wait impurity.From the high temperature raw coke oven gas for going out gas drilling hole discharge, in surface duct in transmission process, because of cooling down, it is depressured and slows down,
Sedimentation easily occurs for water vapour, tar, solid particulate matter, drop for containing in raw coke oven gas etc., condensation forms condensate liquid, and with waste coal
Gas componant is conveyed together in biphase gas and liquid flow in gas.This leads to raw coke oven gas in transmission process, on the one hand because of condensate liquid
It can be deposited on the inner wall of pipeline, gas measurement device or even block metering device, so as to seriously affect the meter to raw coke oven gas
Amount causes gas measurement inaccurate or unfounded or even can not directly measure, and also can not just carry out the automatic of rate of discharge or pressure
Control, this constrains the automation control to Underground Coal Gasification Process to a certain extent.Due to impurity convection current in raw coke oven gas
The influence of measurement, traditionally it is general do not measure directly it is each go out gas drilling hole gas flow, but by it is each go out gas drilling hole receive
The raw coke oven gas of collection is sent into gas main road, then concentration purified treatment is carried out to the coal gas in gas main road, removes in raw coke oven gas
The impurity such as water vapour, tar, solid particulate matter (lime-ash, cinder, rock particles object etc.), drop (coal gas water entrainment, oil droplet),
Then purified gas total flow is measured, but this mode still can not obtain it is each go out gas drilling hole flow, it is thus real
In the operating process of border, the adjusting of throughput is generally carried out out by rule of thumb.On the other hand because a large amount of condensate liquid gathers in pipeline,
Often there is Korrosionsmedium (such as hydrogen sulfide, hydrogen chloride, hydrogen cyanide, ammonia, phenol) to generate corrosion, shadow to pipeline in condensate liquid
The long-term safety operation in speaking pipe road；Furthermore, it is necessary to additionally set blowdown pipeline on gas main road, condensate liquid is periodically discharged,
It is potential pollution sources to contain a large amount of pollutant in condensate liquid, influences to carry out production strictly in line with rules and regulations.
In order to solve this problem, Publication No. 102032930A proposes a kind of shunting type coal gas flow measurement device,
Part flow arrangement is set in metering device, and when raw coke oven gas flows through part flow arrangement, raw coke oven gas inner condensat liquid can sink to duct bottom
It accumulates and excludes；Dry gas can then be assembled to conduit upper, be measured after further purifying, so as to measure aperture Gas Flow
Amount.It is found in the actual use of scene, the part flow arrangement efficiency in metering device is too low, while aperture gas speed is very fast, causes
Condensate liquid can not be effectively removed, so as to be difficult to realize the purpose of measuring shunt.
Invention content
The technical problems to be solved by the invention are to provide a kind of condensate liquid that can be effectively removed in the coal gas of aperture, and have
Effect control aperture gas speed, so as to effectively carry out the aperture measurement of gas flow device of aperture measurement of gas flow and its survey
Amount method.
To solve the above problems, the present invention adopts the following technical scheme that：
A kind of aperture measurement of gas flow device, including gas-liquid-solid three-phase separator, gas measurement device and pressure tune
Regulating device, the gas-liquid-solid three-phase separator, gas measurement device and pressure-regulating device are connected to underground gasification in turn and go out
Gas drilling hole aperture；The gas-liquid-solid three-phase separator reduces for the impurity composition contained in coal gas to be removed from gas phase
Its influence to gas measurement, the condensate liquid for being collected simultaneously generation are focused on；The gas measurement device is used to acquire
The temperature of dry gas, pressure and the flow signal discharged after the separation of gas-liquid-solid three-phase separator, so as to obtain the wink of dry gas
Shi Liuliang and integrated flow；The pressure-regulating device is stablized the pressure of gas measurement device, is ensured for controlling gas speed
The stabilization of measurement process.
Preferably, the gas-liquid-solid three-phase separator includes separator and knockout drum, and the separator is gas-liquid-solid
Three phase separator is simultaneously equipped with gas entry, gaseous phase outlet and liquid-phase outlet, and wherein gas entry connects with the outlet drilling orifice
Logical, gaseous phase outlet is connected with gas measurement device；The knockout drum is located at below separator and goes out equipped with liquid phase entrance and water phase
Mouthful, wherein liquid phase entrance is connected with the liquid-phase outlet of separator, and water phase outlet is connected with water pump and passes through water pump will be in knockout drum
Condensate liquid drain into sewage conduct.
Preferably, bypass line is equipped between the gas entry of separator and gaseous phase outlet and is set on bypass line
There are two bypath valves and a sample tap, which is located on the bypass line between two bypath valves, divides for working as
During from device blocking or daily maintenance, open bypass line and ensure the lasting outlet of gas drilling hole and to tar, solid particulate matter
It is analyzed etc. being sampled.
Preferably, condensation flow meters are equipped in exit of pump, are recorded for the condensate liquid to discharge.
Preferably, fluid level control valve is equipped on the pipeline between condensation flow meters and sewage conduct, in knockout drum
Liquid level gauge is equipped with, the signal output end of liquid level gauge and the signal input part of fluid level control valve connect, for automatically controlling condensation
The discharge of liquid.
Preferably, it is additionally provided on the pipeline between condensation flow meters and sewage conduct and passes to the outlet drilling hole
The condensed water delivery pipe of mouth, for the partial condensation liquid in the knockout drum to be delivered to outlet drilling orifice with coolant outlet coal
Gas；Flow control valve, the signal output end and flow control valve of the condensation flow meters are equipped in the condensed water delivery pipe
Signal input part connects, for automatically controlling the uninterrupted of condensate liquid.
Preferably, oil phase outlet is additionally provided on the knockout drum, oil phase outlet is connected by oil pump with tar tank, in oil
Tar flowmeter is additionally provided on pipeline between pump and tar tank, for discharging tar.
Preferably, the gas measurement device includes the coal gas for connecting the gaseous phase outlet and pressure-regulating device entrance
Pipeline and the gas flowmeter being located on gas piping, temperature sensor and pressure sensor, the entrance of the gas piping with
The gaseous phase outlet connection of three-phase separating device, is respectively equipped with upstream block valve close to both ends on gas piping and downstream is blocked
Valve, in order to the daily maintenance of the gas measurement device.
Preferably, the connection gaseous phase outlet and pressure-regulating device entrance are additionally provided in gas measurement device
Bypass branch, on bypass branch be equipped with bypass block valve, for maintaining out the lasting outlet of gas drilling hole during failure.
Preferably, the pressure-regulating device includes regulating valve and block valve, regulating valve and block valve by pipeline simultaneously
It is associated between the entrance and exit of pressure-regulating device, upstream block valve and downstream is respectively equipped on the pipeline of regulating valve both sides
Block valve, to facilitate the lasting outlet that gas drilling hole is able to maintain that out when the daily maintenance of gas measurement device, failure.
A kind of measuring method of aperture measurement of gas flow device is as follows comprising step：
A) raw coke oven gas detaches：The raw coke oven gas for going out gas drilling hole discharge is sent into gas-liquid-solid three-phase separator, in gas-liquid-solid three
The water vapour that contains in raw coke oven gas in the separator of phase-separating device, tar, solid particulate matter, drop are in gravity, centrifugation masterpiece
It is settled with lower, is condensed into condensate liquid and is detached from gas phase, condensate liquid accumulates in the bottom of the separator, and passes through it
Liquid-phase outlet is expelled to the knockout drum of gas-liquid-solid three-phase separator, and removes the dry gas of condensate liquid from the gas of the separator
Mutually outlet enters gas measurement device；
B) coal gas, condensate liquid metering：Condensate liquid in the knockout drum is pumped to sewage conduct after metering；It will enter
The dry gas of gas measurement device obtains the flow value under operating mode by gas flowmeter, passes through temperature sensor, pressure sensing
Device obtains temperature under operating mode, pressure value and is sent into gas flowmeter, by the flow integrator of gas flowmeter according to acquisition
Temperature signal, pressure signal and flow signal, obtain the instantaneous flow of dry gas under the status of criterion and accumulative stream through conversion
Amount；
C) system pressure is adjusted：Dry gas after metering is sent into pressure-regulating device, utilizes pressure-regulating device
Regulating valve control gas speed, stablize the pressure of gas measurement device, ensure the stabilization of measurement process.
Preferably, it is while the condensate liquid in the knockout drum being pumped to sewage conduct after metering, part is cold
Lime set is pumped to out gas drilling hole, for cooling down coal gas of high temperature.
The beneficial effects of the invention are as follows：
Since the device includes gas-liquid-solid three-phase separator, gas measurement device and pressure-regulating device and is sequentially connected
In underground gasification outlet drilling orifice；It can be by the impurity composition contained in coal gas from gas phase by the three-phase separating device
Removing, reduces its influence to gas measurement, the condensate liquid for being collected simultaneously generation is focused on；The gas measurement device
The temperature of dry gas, pressure and the flow signal discharged after the separation of gas-liquid-solid three-phase separator can be acquired, so as to be done
The instantaneous flow and integrated flow of coal gas；The pressure-regulating device can control gas speed, stablize gas measurement device
Pressure ensures the stabilization of measurement process；Therefore the device can effectively remove condensate liquid in outlet drilling orifice coal gas, and have
The control aperture gas speed of effect, so as to effectively carry out aperture measurement of gas flow；Condensate liquid carries out concentration receipts in aperture
Collection, can be as the refrigerant for adjusting out gas drilling hole gas temperature after simple process.Meanwhile it is easy to carry out automation control and behaviour
Make.
Description of the drawings
Fig. 1 is the structure diagram of the embodiment of the present invention 1.
Fig. 2 is the structure diagram of the embodiment of the present invention 2.
In figure：Go out gas drilling hole 1, gas-liquid-solid three-phase separator 2, gas measurement device 3, pressure-regulating device 4, separator
5, gas entry 5a, gaseous phase outlet 5b, liquid-phase outlet 5c, knockout drum 6, liquid phase entrance 6a, water phase outlet 6b, oil phase outlet 6c,
Water pump 7 condenses flow meters 8, bypass line 9, bypath valve 10, sample tap 11, gas piping 12, upstream block valve 13, pressure
Force snesor 14, gas flowmeter 15, temperature sensor 16, downstream block valve 17 bypass block valve 18, and bypass branch 19 is adjusted
Save valve 20, upstream block valve 21, downstream block valve 22, block valve 23, fluid level control valve 24, flow control valve 25, tar flow
Meter 26, passes through oil pump 27.
Specific embodiment
Embodiment 1
As shown in Figure 1, a kind of aperture measurement of gas flow device that the present embodiment is related to, detaches including gas-liquid-solid three-phase and fills
Put 2, gas measurement device 3 and pressure-regulating device 4, the gas-liquid-solid three-phase separator 2, gas measurement device 3 and pressure
Regulating device 4 is connected to underground gasification in turn and goes out 1 aperture of gas drilling hole.The gas-liquid-solid three-phase separator is used in coal gas to contain
Some impurity compositions are removed from gas phase, reduce its influence to gas measurement, and the condensate liquid for being collected simultaneously generation is concentrated
Processing；The gas measurement device is used to acquire the temperature of dry gas, the pressure discharged after the separation of gas-liquid-solid three-phase separator
And flow signal, so as to obtain the instantaneous flow of dry gas and integrated flow；The pressure-regulating device is used to control Gas Flow
Speed stablizes the pressure of gas measurement device, ensures the stabilization of measurement process.
The gas-liquid-solid three-phase separator includes separator 5 and knockout drum 6, and the separator 5 is gas-liquid-solid three-phase point
From device and equipped with gas entry 5a, gaseous phase outlet 5b and liquid-phase outlet 5c, wherein gas entry 5a, gaseous phase outlet 5b are located at respectively
5 both sides of separator, liquid-phase outlet 5c are located at 5 bottom of separator.The gas entry 5a passes through pipe with the outlet drilling orifice
Road connects, and gaseous phase outlet 5b passes through pipeline connection with gas measurement device.The knockout drum 6 is located at 5 lower section of separator and is equipped with
By pipeline connection, water phase goes out by liquid phase entrance 6a and the liquid-phase outlet 5c of water phase outlet 6b, wherein liquid phase entrance 6a and separator 5
Mouth 6b is connected with water pump 7 and passes through water pump 7 and pipeline drains into sewage conduct by the condensate liquid in knockout drum 6.It is exported in water pump 7
Condensation flow meters 8 on pipeline are installed, are recorded for the condensate liquid to discharge.
Bypass line 9 is connected between the gas entry 5a of separator 5 and gaseous phase outlet 5b and is pacified on bypass line 9
Equipped with two bypath valves 10 and a sample tap 11, which is located on the bypass line 9 between two bypath valves 10,
For blocking or during daily maintenance when separator 5, open bypass line ensure the lasting outlet of gas drilling hole and to tar,
Solid particulate matter etc. is sampled analysis.
The gas measurement device includes the gas piping 12 for connecting the gaseous phase outlet 5b and pressure-regulating device entrance
And gas flowmeter 15, temperature sensor 16 and pressure sensor 14 on gas piping 12, the gas piping
Entrance is connected with the gaseous phase outlet 5b.The pressure sensor and temperature sensor are located at the both sides of gas flowmeter respectively,
It may be alternatively located at the same side of gas flowmeter.On gas piping upstream block valve 13 and downstream are separately installed with close to both ends
Block valve 17, in order to the daily maintenance of the gas measurement device.
The side of the connection gaseous phase outlet 5b and pressure-regulating device entrance is additionally provided in the gas measurement device
Logical branch 19, bypass branch 19 and the main body of gas piping are arranged in parallel, and bypass block valve 18 is equipped on bypass branch 19,
For maintaining out the lasting outlet of gas drilling hole during failure.
The pressure-regulating device includes regulating valve 20 and bypass block valve 23, and regulating valve 20 and block valve 23 pass through pipeline
It is connected in parallel between the entrance and exit of pressure-regulating device, upstream block valve is separately installed on the pipeline of 20 both sides of regulating valve
21 and downstream block valve 22, persistently going out for gas drilling hole is able to maintain that out when the daily maintenance of gas measurement device, failure to facilitate
Gas.The regulating valve 20 is automatic counterbalance valve, for automatically adjusting aperture, to maintain default back pressure value.
The measuring method of a kind of aperture measurement of gas flow device that the present embodiment is related to is as follows comprising step：
A) raw coke oven gas detaches：The raw coke oven gas for going out gas drilling hole discharge is sent into gas-liquid-solid three-phase separator 2 by pipeline,
Water vapour, tar, solid particulate matter, drop contained in raw coke oven gas in the separator 5 of gas-liquid-solid three-phase separator etc. is in weight
It is settled under the effects that power, centrifugal force, is condensed into condensate liquid and is detached from gas phase, condensate liquid accumulates in the separator 5
Bottom, and the liquid-phase outlet 5c for passing through separator 5 is expelled to the knockout drum 6 of gas-liquid-solid three-phase separator, and removes condensation
The gaseous phase outlet 5b of the dry gas of liquid from the separator 5 enters gas measurement device 3；
B) coal gas, condensate liquid metering：By the condensate liquid in the knockout drum 6 by water phase outlet 6b discharges, condensed liquid stream
Sewage conduct is pumped to by water pump 7 after the metering of gauge 8；The dry gas for entering gas measurement device 3 is passed through into gas flowmeter
The flow value under operating mode is obtained, the temperature under operating mode, pressure value are obtained by temperature sensor 16, pressure sensor 14 and is sent into
Gas flowmeter 15 is believed by the flow integrator of gas flowmeter 15 according to the temperature signal, pressure signal and flow of acquisition
Number, obtain the instantaneous flow and integrated flow of the dry gas under the status of criterion through converting；
C) system pressure is adjusted：Dry gas after metering is sent into pressure-regulating device 4, utilizes pressure-regulating device
4 regulating valve control gas speed, while gasification furnace furnace pressure is controlled, stablize the pressure of gas measurement device, ensure to measure
The stabilization of process.
Embodiment 2
As shown in Fig. 2, a kind of aperture measurement of gas flow device that the present embodiment is related to, basic structure with embodiment 1,
The present embodiment repeats no more, difference lies in：Liquid level control is installed on pipeline between condensation flow meters 8 and sewage conduct
Valve 24 processed, liquid level gauge is equipped on knockout drum 6, the signal output end of the liquid level gauge and the signal input part of fluid level control valve 24
Connection, for automatically controlling the discharge of condensate liquid；
Be also associated with passing on pipeline between condensation flow meters 8 and sewage conduct it is described go out 1 aperture of gas drilling hole
Condensed water delivery pipe, for the partial condensation liquid discharged in the knockout drum 6 to be delivered to out gas drilling hole 1 with coolant outlet coal
Gas；Flow control valve 25, the signal output end and flow of the condensation flow meters 8 are installed in the condensed water delivery pipe
The signal input part connection of control valve 25, for automatically controlling the uninterrupted of condensate liquid.6 bottom of knockout drum is additionally provided with oil
Mutually outlet 6c, oil phase outlet 6c is connected by oil pump 27 and pipeline with tar tank, on the pipeline between oil pump 27 and tar tank
Tar flowmeter 26 is additionally provided with, for discharging tar.
The measuring method of a kind of aperture measurement of gas flow device that the present embodiment is related to is as follows comprising step：
A) raw coke oven gas detaches：The raw coke oven gas for going out gas drilling hole discharge is sent into gas-liquid-solid three-phase separator 2 by pipeline,
Water vapour, tar, solid particulate matter, drop contained in raw coke oven gas in the separator 5 of gas-liquid-solid three-phase separator etc. is in weight
It is settled under the effects that power, centrifugal force, is condensed into condensate liquid and is detached from gas phase, condensate liquid accumulates in the separator 5
Bottom, and the liquid-phase outlet 5c for passing through separator 5 is expelled to the knockout drum 6 of gas-liquid-solid three-phase separator, and removes condensation
The gaseous phase outlet 5b of the dry gas of liquid from the separator 5 enters gas measurement device 3；
B) coal gas, condensate liquid metering：The condensate liquid being sent into knockout drum 6 is divided into water phase and oil phase, passes through condensate liquid respectively
After flowmeter 8 and tar flowmeter 26 measure, it is pumped to sewage conduct and tar tank respectively；By the condensation in the knockout drum 6
While liquid is pumped to sewage conduct, partial condensation liquid is pumped to out gas drilling hole 1 by condensed water delivery pipe, for cooling down height
Warm coal gas.The flow value that will be obtained into the dry gas of gas measurement device by gas flowmeter 15 under operating mode, passes through temperature
Sensor 16, the temperature under the acquisition operating mode of pressure sensor 14, pressure value are simultaneously sent into gas flowmeter 15, pass through gas flowmeter
15 flow integrator obtains dry under the status of criterion according to the temperature signal, pressure signal and flow signal of acquisition through conversion
The instantaneous flow and integrated flow of coal gas；
C) system pressure is adjusted：Dry gas after metering is sent into pressure-regulating device 4, utilizes pressure-regulating device
Regulating valve 20 control gas speed, while control gasification furnace furnace pressure, stablize the pressure of gas measurement device, ensure to measure
The stabilization of process.
Although the embodiments of the present invention have been disclosed as above, but its be not restricted in specification and embodiment it is listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, it is of the invention and unlimited
In specific details and legend shown and described herein.
Claims (12)
1. a kind of aperture measurement of gas flow device, it is characterized in that：It includes gas-liquid-solid three-phase separator, gas measurement device
And pressure-regulating device, the gas-liquid-solid three-phase separator, gas measurement device and pressure-regulating device are connected to ground in turn
Lower gasification outlet drilling orifice；The impurity composition that the gas-liquid-solid three-phase separator is used in coal gas to contain takes off from gas phase
It removes, reduces its influence to gas measurement, the condensate liquid for being collected simultaneously generation is focused on；The gas measurement device is used
The temperature of dry gas, pressure and the flow signal discharged after acquisition gas-liquid-solid three-phase separator separation, so as to obtain dry coal
The instantaneous flow and integrated flow of gas；The pressure-regulating device stablizes the pressure of gas measurement device for controlling gas speed
Power ensures the stabilization of measurement process.
2. measurement of gas flow device in aperture according to claim 1, it is characterized in that：The gas-liquid-solid three-phase separator
Including separator and knockout drum, the separator is for gas-liquid-solid three-phase separator and equipped with gas entry, gaseous phase outlet and liquid phase
Outlet, wherein gas entry is connected with the outlet drilling orifice, and gaseous phase outlet is connected with gas measurement device；The knockout drum
It is exported below separator and equipped with liquid phase entrance and water phase, wherein liquid phase entrance is connected with the liquid-phase outlet of separator, water
Mutually outlet is connected with water pump and passes through water pump drains into sewage conduct by the condensate liquid in knockout drum.
3. measurement of gas flow device in aperture according to claim 2, it is characterized in that：In the gas entry and gas of separator
Bypass line is equipped between mutually exporting and is located on bypass line equipped with two bypath valves and a sample tap, the sample tap
On bypass line between two bypath valves, for blocking or during daily maintenance when separator, open bypass line and ensure
The lasting outlet of gas drilling hole and analysis is sampled to tar, solid particulate matter etc..
4. measurement of gas flow device in aperture according to claim 2, it is characterized in that：Condensation liquid stream is equipped in exit of pump
Gauge records for the condensate liquid to discharge.
5. measurement of gas flow device in aperture according to claim 4, it is characterized in that：In condensation flow meters and sewage pipe
Pipeline between road is equipped with fluid level control valve, and liquid level gauge, signal output end and the liquid level control of liquid level gauge are equipped on knockout drum
The signal input part connection of valve processed, for automatically controlling the discharge of condensate liquid.
6. measurement of gas flow device in aperture according to claim 4 or 5, it is characterized in that：In condensation flow meters and dirt
The condensed water delivery pipe for passing to the outlet drilling orifice is additionally provided on pipeline between waterpipe, for will be in the knockout drum
Partial condensation liquid be delivered to outlet drilling orifice with coolant outlet coal gas；Flow control valve is equipped in condensed water delivery pipe,
The signal output end of the condensation flow meters and the signal input part of flow control valve connect, for automatically controlling condensate liquid
Uninterrupted.
7. measurement of gas flow device in aperture according to claim 6, it is characterized in that：Oil phase is additionally provided on the knockout drum
Outlet, oil phase outlet are connected by oil pump with tar tank, and tar flowmeter is additionally provided on the pipeline between oil pump and tar tank,
For discharging tar.
8. the aperture measurement of gas flow device according to claim 1 or 7, it is characterized in that：The gas measurement device packet
Include the gas flowmeter for connecting the gas piping of the gaseous phase outlet and pressure-regulating device entrance and being located on gas piping, temperature
Sensor and pressure sensor are spent, the entrance of the gas piping is connected with the gaseous phase outlet of three-phase separating device, in gas pipe
Upstream block valve and downstream block valve are respectively equipped with close to both ends on road, in order to the daily maintenance of the gas measurement device.
9. measurement of gas flow device in aperture according to claim 8, it is characterized in that：It is additionally provided in gas measurement device
The bypass branch of piece connection gaseous phase outlet and pressure-regulating device entrance, is equipped with bypass block valve on bypass branch,
For maintaining out the lasting outlet of gas drilling hole during failure.
10. the aperture measurement of gas flow device according to claim 1 or 9, it is characterized in that：The pressure-regulating device packet
Include regulating valve and block valve, between regulating valve and block valve are connected in parallel on the entrance and exit of pressure-regulating device by pipeline,
Upstream block valve and downstream block valve are respectively equipped on the pipeline of regulating valve both sides, to facilitate the daily dimension of gas measurement device
The lasting outlet of gas drilling hole is able to maintain that out when shield, failure.
11. a kind of measuring method of measurement of gas flow device in aperture as described in claim 1, it is characterized in that comprising step such as
Under：
A) raw coke oven gas detaches：The raw coke oven gas for going out gas drilling hole discharge is sent into gas-liquid-solid three-phase separator, in gas-liquid-solid three-phase point
From contain in raw coke oven gas in the separator of device water vapour, tar, solid particulate matter, drop gravity, centrifugal force effect under
It settles, is condensed into condensate liquid and is detached from gas phase, condensate liquid accumulates in the bottom of the separator, and passes through its liquid phase
Outlet is expelled to the knockout drum of gas-liquid-solid three-phase separator, and the gas phase for removing dry gas from the separator of condensate liquid goes out
Mouth enters gas measurement device；
B) coal gas, condensate liquid metering：Condensate liquid in the knockout drum is pumped to sewage conduct after metering；Coal gas will be entered
The dry gas of metering device obtains the flow value under operating mode by gas flowmeter, is obtained by temperature sensor, pressure sensor
Temperature under operating mode, pressure value and be sent into gas flowmeter, by the flow integrator of gas flowmeter according to the temperature of acquisition
Signal, pressure signal and flow signal are spent, the instantaneous flow and integrated flow of the dry gas under the status of criterion are obtained through conversion；
C) system pressure is adjusted：Dry gas after metering is sent into pressure-regulating device, utilizes the tune of pressure-regulating device
Valve control gas speed is saved, stablizes the pressure of gas measurement device, ensures the stabilization of measurement process.
12. a kind of measuring method of aperture measurement of gas flow device according to claim 11, it is characterized in that：By described in
While condensate liquid in knockout drum is pumped to sewage conduct after metering, partial condensation liquid is pumped to out gas drilling hole, is used for
Cool down coal gas of high temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810095804.2A CN108168642A (en) | 2018-01-31 | 2018-01-31 | A kind of aperture measurement of gas flow device and its measuring method |
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| CN201810095804.2A CN108168642A (en) | 2018-01-31 | 2018-01-31 | A kind of aperture measurement of gas flow device and its measuring method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521225A (en) * | 2020-03-20 | 2020-08-11 | 北京国利衡清洁能源科技(集团)有限公司 | Orifice gas flow measuring device and measuring method thereof |
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