CN112916544A - Blockage removing device and blockage removing method for condensate cylinder - Google Patents
Blockage removing device and blockage removing method for condensate cylinder Download PDFInfo
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- CN112916544A CN112916544A CN201911241227.4A CN201911241227A CN112916544A CN 112916544 A CN112916544 A CN 112916544A CN 201911241227 A CN201911241227 A CN 201911241227A CN 112916544 A CN112916544 A CN 112916544A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
- B08B9/0933—Removing sludge or the like from tank bottoms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/46—Inspecting cleaned containers for cleanliness
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Abstract
The invention discloses a blockage removing device and a blockage removing method for a condensate cylinder, and belongs to the technical field of coal bed methane development. The method comprises the following steps: a purge component and a drain component. The purging assembly comprises a gas cylinder and a gas inlet valve, a gas outlet of the gas cylinder is communicated with an inlet of the gas inlet valve, and an outlet of the gas inlet valve is communicated with an outlet of a liquid discharge pipe of the condensate cylinder. The drain assembly comprises a blow-down valve, and an inlet of the blow-down valve is communicated with an outlet of a drain pipe of the condensate tank. This congeal liquid jar unblock device dredges the impurity of jam in congealing liquid jar bottom through the high-pressure gas in the gas cylinder to discharge the bottom surface through the hydrops that the blowoff valve will contain impurity, realize congealing stifled of liquid jar, need not to dismantle the change to the congeal liquid jar that blocks up, easy operation reduces and knows the cost that congeals liquid jar and block up.
Description
Technical Field
The disclosure relates to the technical field of coal bed methane development, in particular to a blockage removing device and a blockage removing method for a condensate cylinder.
Background
In the development process of coal bed gas or natural gas, gas is conveyed to a gas collecting station from a wellhead by a gas conveying pipeline. Gas is because topography, temperature, pressure etc. change at the in-process of conveying gas, and partial gas can condense into liquid, for prevent to condense into liquid gas gathering in gas transmission pipeline and cause the jam or freeze and damage gas transmission pipeline, gas transmission pipeline can set up the congeals the liquid jar at every section distance and collects gas hydrops and discharges the hydrops to subaerial through the fluid-discharge tube. And coal bed gas can carry impurity such as partial buggy, fracturing sand at the in-process that produces, and coal bed gas is after the liquefaction, and these impurity also can be along with liquid coal bed gas gets into congeals the hydraulic cylinder and deposit gradually in the bottom, and impurity can submerge the fluid-discharge tube that stretches into in congealing the hydraulic cylinder after deposiing to a certain degree, causes the fluid-discharge tube to block up, and the hydrops in congealing the hydraulic cylinder can't pass through the fluid-discharge tube and discharge, finally causes the jam of gas transmission pipeline.
In the related art, the way to solve the blockage of the condensate cylinder in the gas transmission pipeline is usually to replace the new condensate cylinder. By closing the inlet valve of the gas line communicating with the cylinder, the operator goes to the site to dig out the blocked cylinder from the ground and replace it with a new one.
In order to collect the hydrops in can effectually with the gas transmission pipeline to the lime set jar, the lime set jar sets up the region that low height above sea level and topography suddenly reduced in the mountain area usually, and the construction operation degree of difficulty is high. Meanwhile, the gas transmission pipeline connected with the cylinder needs to be closed when the cylinder is replaced, normal production of the coal bed well is affected, and the pressure fluctuation caused by closing a valve in the gas transmission pipeline can also damage the coal bed reservoir, so that the yield loss of the coal bed well is caused.
Disclosure of Invention
The embodiment of the disclosure provides a blockage removing device and a blockage removing method for a condensate cylinder, the condensate cylinder does not need to be replaced, the blockage of the condensate cylinder is directly removed on the ground, the operation is simple, and the cost is reduced. The technical scheme is as follows:
in a first aspect, an embodiment of the present disclosure provides a cylinder block removing device, including: a purging component and a discharging component, wherein the purging component is arranged on the lower part of the exhaust pipe,
the purging component comprises a gas cylinder and an air inlet valve, the gas outlet of the gas cylinder is communicated with the inlet of the air inlet valve, the outlet of the air inlet valve is used for being communicated with the outlet of a liquid discharge pipe of the condensate cylinder,
the drain assembly includes a blow-down valve having an inlet for communication with an outlet of a drain of the condensate tank.
Optionally, the blockage removing device for the cylinder further comprises a pressure regulating valve, and the gas outlet of the gas cylinder is communicated with the inlet of the gas inlet valve through the pressure regulating valve.
Optionally, the cylinder block removing device further comprises at least one of a first pressure gauge and a second pressure gauge, the first pressure gauge is connected between the gas outlet of the gas cylinder and the inlet of the gas inlet valve, and the second pressure gauge is connected between the gas inlet valve and the drain pipe of the cylinder block.
Optionally, the congealing jar unblocking apparatus further comprises a tee joint, the tee joint comprises a first interface, a second interface and a third interface, the first interface is communicated with the outlet of the air inlet valve, the second interface is communicated with the inlet of the blowoff valve, and the third interface is used for being communicated with a drain pipe of the congealing jar.
Optionally, the cylinder block removing device further comprises a drain pipe, and the drain pipe is communicated with the outlet of the drain valve.
In a second aspect, an embodiment of the present disclosure provides a blockage removing method for a cylinder block, where the blockage removing method is implemented by using the blockage removing device for a cylinder block provided in the first aspect, and includes:
injecting high-pressure gas into a liquid discharge pipe of the condensate cylinder through a purging assembly so as to dredge the liquid discharge pipe;
and stopping inputting the high-pressure gas so as to discharge the impurities and the accumulated liquid in the condensate cylinder from the discharge assembly through the liquid discharge pipe.
Optionally, the cylinder unblocking apparatus further comprises a second pressure gauge, the second pressure gauge is used for being connected between the air inlet valve and a liquid discharge pipe of the cylinder,
the injecting of high pressure gas into the drain pipe of the condensate cylinder through the purge assembly comprises:
injecting the high-pressure gas in the gas cylinder into the liquid condensation cylinder through a liquid discharge pipe of the liquid condensation cylinder, and observing the reading change of the second pressure gauge after injecting for a period of time;
if the reading descending amplitude of the second pressure gauge reaches a first threshold value, the drain pipe is determined to be dredged;
alternatively, the first and second electrodes may be,
and if the descending amplitude of the reading of the second pressure gauge is smaller than the first threshold value, injecting high-pressure gas with higher pressure into the condensation cylinder, and observing the change of the reading of the second pressure gauge again after injecting the high-pressure gas for a period of time until the descending amplitude of the reading of the second pressure gauge reaches the first threshold value.
Optionally, the cylinder unblocking method further comprises:
after the high-pressure gas is stopped being input, if the discharging assembly does not discharge impurities and accumulated liquid, the high-pressure gas is injected into the condensate cylinder through the purging assembly again, and after the high-pressure gas is injected for a period of time, the discharging condition of the impurities and the accumulated liquid in the blowoff valve is observed again until the discharging assembly discharges the impurities and the accumulated liquid;
alternatively, the first and second electrodes may be,
after stopping inputting high-pressure gas, if the emission subassembly has the hydrops is discharged just the quality of water of hydrops is more clear, then to pour into pressure higher in the congealing jar high-pressure gas pours into a period of time into, observes again in the blowoff valve the discharge condition of impurity and hydrops, until there is a large amount of in the blowoff valve impurity the hydrops is discharged.
Optionally, the cylinder unblocking method further comprises:
when the accumulated liquid discharged by the discharge assembly is changed from the accumulated liquid containing a large amount of impurities into the accumulated liquid with cleaner water quality, injecting the high-pressure gas in the gas cylinder into the condensate cylinder again through a liquid discharge pipe of the condensate cylinder;
and after the high-pressure gas is injected for a period of time, stopping injecting the high-pressure gas, so that the residual impurities and accumulated liquid in the condensed liquid cylinder are discharged by the discharge assembly.
Optionally, the cylinder unblocking apparatus further comprises a first pressure gauge connected between the gas outlet of the gas cylinder and the inlet of the gas inlet valve,
the blockage removing method for the condensate cylinder further comprises the following steps:
before purging and dredging impurities and accumulated liquid in the condensate cylinder, injecting the high-pressure gas in the gas cylinder into a pipeline between a gas outlet of the gas cylinder and an inlet of a liquid discharge valve on the liquid discharge pipe;
stopping injecting the high-pressure gas when the reading of the first pressure gauge reaches a second threshold value;
observing the change of the reading of the first pressure gauge;
if the reading of the first pressure gauge is unchanged, determining that the purging assembly has no leak point;
alternatively, the first and second electrodes may be,
and if the reading of the first pressure gauge is reduced, determining that a leak point exists in the purging assembly, and checking and reassembling the purging assembly.
The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:
this congeal liquid jar unblock device sweeps the mediation to the impurity of blockking up in congeal liquid jar bottom through the high-pressure gas in the gas cylinder to discharge the bottom surface through the hydrops that the blowoff valve will contain impurity, realize the unblock to congeal the liquid jar, need not to dismantle the change to the congeal liquid jar that blocks up, easy operation reduces and knows the cost that congeals liquid jar and block up.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural view of a related art cylinder;
fig. 2 is a schematic structural diagram of a cylinder block removing device provided by the embodiment of the disclosure;
fig. 3 is a flowchart of a deblocking method provided by an embodiment of the present disclosure;
FIG. 4 is a flowchart illustrating the operational steps of a gas leak test of a purge module according to an embodiment of the present disclosure;
FIG. 5 is a flow chart illustrating the steps of a drain unclogging operation provided by an embodiment of the present disclosure;
fig. 6 is a flowchart illustrating the operation steps of discharging impurities and liquid loading according to an embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a related art cylinder. As shown in fig. 1, in the related art, a cylinder a is usually buried in the ground at a depth of 2-2.5m, and opposite side walls of the cylinder a are respectively provided with an air inlet b1 and an air outlet b2 which are communicated with a gas transmission pipeline b of coal bed gas. The distance from the cylinder bottom of the condensate cylinder a to the ground m is larger than the distance from the air inlet b1 and the air outlet b2 to the ground m, so that the coalbed methane accumulated liquid in the gas transmission pipeline b conveniently enters the condensate cylinder a and then is gathered at the cylinder bottom of the condensate cylinder a. The cylinder has a drain pipe a1 connected to the ground m and a balance pipe a2, and the drain pipe a1 has a first end a11 located above the ground m and a second end a12 located at the bottom of the cylinder a, wherein the first end a11 is connected with a drain valve c at the end. And balance tube a2 has a first end a21 located above ground level m and a second end a22 located in the cylinder of vat a, wherein the first end a21 of balance tube a2 communicates with the first end a11 of drain tube a1 through valve d, and the second end a22 of balance tube a2 is at a distance from ground level m smaller than the distances from air inlet b1 and air outlet b 2. The staff regularly opens the flowing back valve c that is located first end a11 of flowing back a1, because the atmospheric pressure in gas transmission pipeline b and the cylinder a that congeals is higher than standard atmospheric pressure, the coalbed methane hydrops that gathers in cylinder a bottom of congealing the cylinder a passes through flowing back a1 under the atmospheric pressure effect in the cylinder a that congeals and discharges to ground m, realizes the discharge of coalbed methane hydrops.
And because coal bed gas can carry some coal dust, fracturing sand and other impurities in the process of production, after the coal bed gas is liquefied, these impurities can also enter the condensate cylinder a along with the liquid coal bed gas and deposit gradually at the cylinder bottom, impurity can submerge the fluid-discharge tube a1 that stretches into in the condensate cylinder a after depositing to a certain degree, cause the jam after the impurity of deposit submerges first end a11, the hydrops in the condensate cylinder a can't be discharged through the fluid-discharge tube, finally deposited impurity and hydrops will submerge air inlet b1 and gas outlet b2, cause the jam of gas transmission pipeline b.
The staff can judge whether congeal liquid jar a blocks up through opening flowing back valve c and observing the condition of the hydrops and the gas that flowing back valve c discharged. After the drain valve c is opened, if accumulated liquid in the drain valve c is discharged, the condensate cylinder a is determined to work normally and is not blocked; if the liquid accumulation and the gas are discharged from the liquid discharge valve c at the same time, determining that the liquid condensation cylinder a works normally and the liquid accumulation in the liquid condensation cylinder a is less; if only gas is discharged from the liquid discharge valve c, the condensate cylinder a is determined to work normally, and little liquid is accumulated in the condensate cylinder; if neither liquid nor gas is discharged from the drain valve c, the first end a11 of the drain pipe a1 of the valve d is separated, the valve d is opened, and if gas is discharged from the valve d at the first end a21 of the balance pipe a2, it is determined that the coagulation cylinder a is blocked.
Fig. 2 is a schematic structural diagram of a cylinder plugging removal device provided by the embodiment of the disclosure. With reference to fig. 1 and 2, the cylinder unblocking apparatus includes a purge assembly 1 and a drain assembly 2. The purging assembly 1 comprises a gas cylinder 11 and an air inlet valve 12, wherein a gas outlet of the gas cylinder 11 is communicated with an inlet of the air inlet valve 12, and an outlet of the air inlet valve 12 is communicated with an outlet of a liquid discharge pipe of a condensate cylinder. The drain assembly 2 comprises a blow-down valve 21, the inlet of which blow-down valve 21 communicates with the outlet of the drain of the condensate tank.
According to the blockage removing device for the condensate cylinder provided by the embodiment of the disclosure, firstly, the drain pipes of the condensate cylinders of the purging assembly 1 and the discharging assembly 2 are communicated, namely, the outlet of the air inlet valve 12 is communicated with the outlet of the drain valve c at the tail end of the drain pipe a1 of the drain cylinder a, and the blockage removing device for the condensate cylinder is connected with the condensate cylinder a. When not in use, the gas cylinder 11, the gas inlet valve 12, the blow-off valve 21 and the drain valve c on the drain pipe a1 are all closed. High-pressure gas in the gas cylinder 11 enters the condensation cylinder from the liquid discharge pipe a1 by opening the gas cylinder 11, the gas inlet valve 21 and the liquid discharge valve c on the liquid discharge pipe a1, impurities and liquid accumulation blocked at the bottom of the condensation cylinder a and the second end a12 of the liquid discharge pipe a1 are dispersed by the pressure of the high-pressure gas to realize dredging, and the dispersed impurities and the liquid accumulation are stirred and mixed under the action of the high-pressure gas. After that, the air intake valve 12 is closed, the blow-off valve 21 is opened, and since there is no high-pressure gas entering the condensate tank a, and the condensate tank a communicates with the outside through the drain pipe a1 and the blow-off valve 21, the agitated and mixed impurities and accumulated liquid enter the drain pipe a1 from the second end a12 of the drain pipe a1 under the pressure higher than the standard atmospheric pressure in the condensate tank a, and are finally discharged to the ground through the drain pipe a1 and the blow-off valve 21.
This congeal liquid jar unblock device sweeps the mediation to the impurity of blockking up in congeal liquid jar bottom through the high-pressure gas in the gas cylinder to discharge the bottom surface through the hydrops that the blowoff valve will contain impurity, realize the unblock to congeal the liquid jar, need not to dismantle the change to the congeal liquid jar that blocks up, easy operation reduces and knows the cost that congeals liquid jar and block up.
Optionally, the cylinder unblocking apparatus further comprises a pressure regulating valve 3, and the outlet of the gas cylinder 11 is communicated with the inlet of the gas inlet valve 12 through the pressure regulating valve 3. By arranging the pressure regulating valve 3 between the gas outlet of the gas cylinder 11 and the inlet of the gas inlet valve 12, when high-pressure gas is injected into the liquid discharge pipe of the cylinder through the purging assembly 1, namely after the gas outlet valve of the gas cylinder 11 and the gas inlet valve 12 are opened, the pressure of the high-pressure gas passing through the gas inlet valve 12 can be gently increased by slowly regulating the pressure regulating valve 3, and the phenomenon that the pressure of the high-pressure gas injected into the liquid discharge pipe of the cylinder at one time is too high to generate pressure fluctuation to damage the liquid discharge pipe is avoided.
Optionally, the cylinder unblocking apparatus further comprises at least one of a first pressure gauge 4 and a second pressure gauge 5, the first pressure gauge 4 is connected between the gas outlet of the gas cylinder 11 and the inlet of the gas inlet valve 12, and the second pressure gauge 5 is used for being connected between the gas inlet valve 12 and the drain pipe of the cylinder. A first pressure gauge 4 may be used to indicate the gas pressure between the outlet of the gas cylinder 11 and the inlet of the gas inlet valve 12 and a second pressure gauge 5 may be used to indicate the gas pressure in the outlet of the gas inlet valve 12 and the drain of the cylinder. The pressure change in the condensate cylinder unblocking device pipeline can be directly observed through first manometer 4 and second manometer 5 to the staff, controls air-vent valve 3 as required and adjusts the high-pressure gas pressure that gets into in the condensate cylinder.
It should be noted that the first pressure gauge 4 and the second pressure gauge 5 used in the embodiments of the present disclosure are conventional pressure gauges, and in order to ensure observation of the gas pressure in the pipeline of the cylinder block removing device, the range of the first pressure gauge 4 and the second pressure gauge 5 is usually 5-7Mpa higher than the maximum pressure of the high-pressure gas in the gas cylinder 11.
Optionally, the cylinder block removing device further comprises a tee joint 6, the tee joint 6 comprises a first connector 61, a second connector 62 and a third connector 63, the first connector 61 is communicated with an outlet of the air inlet valve 12, the second connector 62 is communicated with an inlet of the blow-down valve 21, and the third connector 63 is used for being communicated with a drain pipe of the cylinder block. The purging component 1 and the discharging component 2 which are arranged in the blocking-removing mode of the condensate cylinder are communicated with a liquid discharge pipe of the condensate cylinder through the tee joint 6, and when impurities and accumulated liquid in the condensate cylinder are purged and dredged only by using the purging component 1, the blowoff valve 21 is closed and the air inlet valve 12 is opened. And when the discharging assembly 2 is only needed to discharge the impurities and the accumulated liquid in the condensate tank, the air inlet valve 12 is closed and the drain valve 21 is opened. Need not to use many pipelines will sweep subassembly 1 and discharge subassembly 2 and respectively with the fluid-discharge tube intercommunication of lime set jar, simple structure, convenient operation has reduced the manufacturing cost of lime set jar unblock device simultaneously.
Exemplarily, in the embodiment of the present disclosure, the first port 61 of the tee joint 6 is connected to the intake valve 12, the second port 62 and the blowoff valve 21 through external screw joints, and the external screw joints are fastened to the valve through threads, so that the structure is simple and the disassembly and replacement are convenient.
Optionally, the cylinder block removing device further comprises a drain pipe 7, and the drain pipe 7 is communicated with the outlet of the drain valve 21. The accumulated liquid of the coal bed gas containing impurities discharged from the condensate tank is directly discharged to the ground through the drain valve 21, so that the environment of the section above the condensate tank is polluted. Through connecting blowdown pipe 7 on blowoff valve 21, utilize blowoff pipe 7 to lead the hydrops that contains impurity to the hydrops treatment tank that sets up specially or other less places to district's environmental pollution, be favorable to the protection to the environment, avoid simultaneously that the hydrops that contains impurity directly discharges through blowoff valve 21, cause the corruption to blowoff valve 21, improved the service life that the congeals jar unblock device.
Illustratively, in the disclosed embodiment, the intake valve 12 and the blowoff valve 21 are both ball valves. The ball valve is a valve whose opening and closing piece is driven by valve rod and can make rotary motion around the axis of ball valve, and can be used for cutting off, distributing and changing flow direction of accumulated liquid, and it only has need of 90 deg. rotation operation and small turning moment to implement tight closing. The ball valve has the advantages of simple and compact structure, reliable sealing, convenient maintenance, difficult erosion by accumulated liquid when the sealing surface and the spherical surface are in a closed state, and easy operation and maintenance. And the fluid resistance of the ball valve is small, so that the sewage draining effect can be effectively improved when the ball valve is used as a sewage draining valve.
Illustratively, the gas cylinder 11 is an inert gas cylinder. The inert gas with stable chemical properties is used as the high-pressure gas to sweep impurities and accumulated liquid in the condensate cylinder a, so that the high-pressure gas and the coal bed gas in the condensate cylinder can be prevented from generating chemical reaction to cause combustion or explosion, and the method is safe and reliable. For example, in the disclosed embodiment, the gas cylinder 11 is a nitrogen gas cylinder.
Exemplarily, in the disclosed embodiment, the high pressure gas pressure inside the gas cylinder 11 is 10 Mpa. The high-pressure gas pressure in the gas cylinder is higher, the dredging effect of the impurities blocked at the bottom of the liquid condensing cylinder can be improved, the impurities and the coalbed methane accumulated liquid at the bottom of the liquid condensing cylinder are fully stirred and mixed, and the blockage removal is realized by the discharge of a liquid discharge pipe conveniently. And the high-pressure gas with the pressure of 10Mpa can blow and dredge most of impurities and effusion blocked at the bottom of the condensate cylinder. According to the specific situation, high-pressure gas with higher pressure can be adopted to improve the dredging effect, and the disclosure is not limited herein.
Illustratively, in the embodiment of the disclosure, the gas cylinder 11, the gas inlet valve 12 and the drain of the condensate cylinder in the purging assembly 1 are connected by high-pressure pipelines. The high-pressure pipeline can be made of plastic or metal materials, and the pressure-bearing strength can be up to 15MPa, which is not limited by the disclosure.
It should be noted that, in order to ensure the maximum pressure that can be borne by the high-pressure pipeline, the pipe diameter of the high-pressure pipeline is generally large, and there may be a pipe diameter mismatch at the connection with the conventional intake valve 12. In the embodiment of the present disclosure, a reducer union is used to connect the inlet of the intake valve 12 to the high-pressure pipeline, so as to solve the problem that the pipe diameter of the high-pressure pipeline is not matched with the inlet size of the intake valve 12.
Fig. 3 is a flowchart of a method for unblocking a cylinder according to an embodiment of the present disclosure. The device is realized based on the cylinder plugging removal device shown in figure 2. FIG. 4 is a flowchart illustrating the operation steps of a gas leak test of a purge module according to an embodiment of the present disclosure. As shown in fig. 3 and 4, an embodiment of the present disclosure further provides a cylinder de-plugging method, which is applied to the cylinder de-plugging apparatus shown in fig. 2, and the cylinder de-plugging method includes:
and step S31, performing a leakage test on the purging assembly.
Before dredging the impurity of blockking up in congealing liquid cylinder a bottom through fluid-discharge tube a1, need earlier to the congeal liquid cylinder deblocking device's of installing sweep subassembly 11 and carry out gas leakage test, avoid the gas cylinder 11, first manometer 4, the connection between the admission valve 12 inseparable high-pressure gas's that leads to revealing, cause high-pressure gas's waste, high-pressure gas's the gas pressure that can lead to pouring into in congealing liquid cylinder a simultaneously declines, the influence unblocks the effect.
The step S31 may include:
and S311, connecting the blockage removing device of the condensate cylinder with a liquid discharge pipe of the condensate cylinder.
I.e. the first end a11 of the drain a1 of the vat, located on the ground m, communicates with the outlet of the air inlet valve 12 and the outlet of the blow-down valve 21, respectively.
S312, the drain valve c on the drain pipe a1 is closed to isolate the purging assembly 1 of the cylinder unblocking apparatus from the cylinder a. And opening an air outlet valve of the air bottle 11, opening an air inlet valve 12, injecting high-pressure air in the air bottle 11 into a pipeline between an air outlet of the air bottle 11 and an inlet of a liquid discharge valve c on a liquid discharge pipe a1, and closing the air inlet valve 12 when the reading of the first pressure gauge 4 reaches 10 Mpa. Wherein, 10Mpa is the pressure threshold value, which can be set according to the actual requirement.
And S313, observing the change of the reading of the first pressure gauge 4. If the reading of the first pressure gauge 4 is unchanged, determining that the purging assembly 1 has no leakage point, and passing and completing a leakage test; if the reading of the first pressure gauge 4 is reduced, it is determined that a leak point exists in the connection of the purging assembly 1, the air outlet valve and the air inlet valve 12 of the air bottle 11 are closed, and the connections of the purging assembly 1 are inspected and reassembled until the leak test is passed and completed.
And step S32, injecting high-pressure gas into the drain pipe of the condensate cylinder through the purging assembly to dredge the drain pipe.
FIG. 5 is a flow chart illustrating the steps of dredging a drain according to an embodiment of the present disclosure. As shown in fig. 5, the step S32 may include:
s321, the high-pressure gas in the gas cylinder 11 is injected into the cylinder a through the liquid discharge pipe a1 of the cylinder a.
S322, observing the reading change of the second pressure gauge 5 after injecting for a period of time;
if the reading of the second pressure gauge 5 drops by a first threshold value, it indicates that the cylinder a is unblocked.
Or if the reading descending amplitude of the second pressure gauge 5 is smaller than the first threshold value, injecting high-pressure gas with higher pressure into the condensation cylinder a, and observing the reading change of the second pressure gauge 5 again after injecting for a period of time until the reading descending amplitude of the second pressure gauge 5 reaches the first threshold value.
In step S321, the outlet valve of the gas cylinder 11 is opened, the gas inlet valve 12 and the drain valve c on the drain pipe a1 are opened, the blow-off valve 21 is closed, the high-pressure gas before the drain valve c is injected into the cylinder a through the drain pipe a1, and the high-pressure gas impacts the impurities and the accumulated liquid blocking the bottom of the cylinder a and the second end a12 of the drain pipe a1, so that the drain pipe a1 is dredged. After 1-2 minutes of high pressure gas injection, the inlet valve 12 is closed.
In step S322, observing the reading change of the second pressure gauge 5, and if the pressure of the second pressure gauge 5 decreases to reach the first threshold value, that is, the pressure decreases to be the same as the working pressure of the gas transmission pipeline b communicated with the cylinder a, determining that the liquid discharge pipe a1 is dredged, and passing and completing the dredging process; if the reading of the second pressure gauge 5 is decreased by less than the first threshold value, that is, the reading cannot be decreased to the same working pressure as the gas pipeline b communicated with the cylinder a, it is determined that the liquid discharge pipe a1 is still blocked. At this time, the pressure regulating valve 2 is adjusted, the air inlet valve 12 is opened, high-pressure gas with higher pressure is injected into the cylinder a, after 1-2 minutes of injection, the air inlet valve 12 is closed, and the change of the reading of the second pressure gauge 5 is observed again to judge whether the drain pipe a1 is dredged. If not, the above steps are repeated until the reading of the second pressure gauge 5 is reduced to the same working pressure of the gas transmission pipeline b communicated with the condensation cylinder a.
It should be noted that, in the embodiment of the present disclosure, the working pressure in the gas transmission pipeline b, i.e., the pressure of the coal bed gas entering the liquid condensation cylinder a from the gas inlet b1, may be 0.05 Mpa.
And step S33, stopping inputting the high-pressure gas, so that the impurities and the accumulated liquid in the condensate cylinder are discharged from the discharge assembly through the liquid discharge pipe.
Fig. 6 is a flowchart illustrating the operation steps of discharging impurities and liquid loading according to an embodiment of the present disclosure. As shown in fig. 6, the step S33 may include:
s331, the air intake valve 12 is closed and the blow-down valve 21 is opened, so that the foreign substances and the accumulated liquid in the condensate tank can be discharged from the discharge assembly 2 through the discharge pipe a 1.
And step S34, judging the dredging condition of the drain pipe according to the discharge condition of the discharge assembly.
After the input of the high-pressure gas is stopped, if impurities and accumulated liquid are not discharged from the drain valve 21, the high-pressure gas is injected into the condensate cylinder through the purging assembly 1 again;
after injecting for a period of time, observing the discharge condition of impurities and accumulated liquid of the blowoff valve 21 (namely the discharge condition of the discharge assembly) again until the impurities and the accumulated liquid in the discharge assembly 2 are discharged;
alternatively, the first and second electrodes may be,
after the input of high-pressure gas is stopped, if effusion is discharged from the discharge assembly 2 and the quality of the effusion is relatively clear, the pressure regulating valve 3 is adjusted to inject high-pressure gas with higher pressure into the cylinder a1, and after a period of injection, the discharge conditions of impurities and effusion in the blow-down valve 21 are observed again until effusion containing a large amount of impurities is discharged from the blow-down valve.
The step S34 includes:
and S341, observing the pollution discharge condition of impurities and accumulated liquid in the pollution discharge valve 21.
S342, if the impurities and the accumulated liquid are not discharged from the blowoff valve 21, the impurities blocked at the bottom of the condensate cylinder a and the second end a12 of the discharge pipe a1 are not completely dredged and are not enough to discharge the accumulated liquid containing the impurities. At the moment, the blow-down valve 21 is closed, the air inlet valve 12 is opened, high-pressure gas is injected into the condensate cylinder a again through the purging assembly 1 to dredge the drain pipe a1, after the high-pressure gas is injected for 1 to 2 minutes, the air inlet valve 12 is closed, and the blow-down valve 21 is opened until impurities and accumulated liquid are discharged from the blow-down valve 21;
s343: if the quality of the accumulated liquid discharged from the waste water discharge valve 21 is relatively clean, it is indicated that the impurities blocked at the bottom of the condensate tank a and the second end a12 of the liquid discharge pipe a1 are not completely mixed with the accumulated liquid although they are dredged. At this time, the blowoff valve 21 is closed, the pressure regulating valve is adjusted, the air inlet valve 12 is opened, the high-pressure gas with higher pressure is injected into the condensate cylinder a, so that the dredged impurities and the accumulated liquid are fully mixed under the stirring of the high-pressure gas, after the mixture is injected for 1 to 2 minutes, the air inlet valve 12 is closed, the blowoff valve 21 is opened, and the accumulated liquid containing a large amount of impurities is discharged from the blowoff valve 21.
For example, in this step, when injecting the high-pressure gas into the cylinder a, a pulse injection manner may be adopted, that is, the air inlet valve 12 is intermittently opened and closed, so that the high-pressure gas is intermittently injected into the cylinder a, and the impurities blocking the bottom of the cylinder a are repeatedly purged, thereby stirring the impurities and the accumulated liquid more sufficiently and improving the dredging effect.
And step S35, when the accumulated liquid discharged by the discharging assembly is changed from accumulated liquid containing a large amount of impurities into accumulated liquid with clear water quality, injecting high-pressure gas into the condensing cylinder through the liquid discharge pipe of the condensing cylinder through the purging assembly again, and stopping injecting the high-pressure gas after injecting for a period of time, so that the residual impurities and the accumulated liquid in the condensing cylinder are discharged by the discharging assembly.
The step S35 may include:
s351, when the accumulated liquid discharged by the drain valve 21 is changed from accumulated liquid containing a large amount of impurities into accumulated liquid with cleaner water quality, determining that most of the impurities in the condensate tank a are discharged to the outside along with the accumulated liquid. And closing the blowoff valve 21, opening the air inlet valve 12, injecting high-pressure gas into the condensate cylinder a again, closing the air inlet valve 12 after injecting for a period of time, opening the blowoff valve 21, discharging accumulated liquid containing residual impurities in the condensate cylinder a from the blowoff valve 21, and completing the blockage removal of the condensate cylinder a.
The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.
Claims (10)
1. A cylinder unblocking apparatus, comprising: a purging component (1) and a discharging component (2),
the purging component (1) comprises a gas cylinder (11) and a gas inlet valve (12), the gas outlet of the gas cylinder (11) is communicated with the inlet of the gas inlet valve (12), the outlet of the gas inlet valve (12) is communicated with the outlet of a liquid discharge pipe of a condensate cylinder,
the drain assembly (2) comprises a blow-down valve (21), an inlet of the blow-down valve (21) being adapted to communicate with an outlet of a drain of the condensate tank.
2. The cylinder unblocking apparatus according to claim 1, further comprising a pressure regulating valve (3), wherein an outlet of the gas cylinder (11) is communicated with an inlet of the gas inlet valve (12) through the pressure regulating valve (3).
3. The cylinder de-plugging device according to claim 2, further comprising at least one of a first pressure gauge (4) and a second pressure gauge (5), wherein said first pressure gauge (4) is connected between the gas outlet of said gas cylinder (11) and the inlet of said gas inlet valve (12), and said second pressure gauge (5) is used for being connected between said gas inlet valve (12) and the drain of said cylinder.
4. The condensate cylinder unblocking apparatus according to any one of claims 1 to 3, further comprising a tee (6), wherein the tee (6) comprises a first port (61), a second port (62) and a third port (63), the first port (61) is communicated with the outlet of the air intake valve (12), the second port (62) is communicated with the inlet of the blow-off valve (21), and the third port (63) is used for being communicated with the drain pipe of the condensate cylinder.
5. A condensate cylinder unblocking apparatus according to any one of the claims 1 to 3, further comprising a drain pipe (7), wherein the drain pipe (7) is in communication with the outlet of the drain valve (21).
6. A cylinder plugging removal method, which is implemented by using the cylinder plugging removal device as claimed in claim 1, and comprises the following steps:
injecting high-pressure gas into a liquid discharge pipe of the condensate cylinder through a purging assembly (1) so as to dredge the liquid discharge pipe;
stopping the input of the high-pressure gas so that the impurities and the accumulated liquid in the condensate cylinder are discharged from the discharge assembly (2) through the discharge pipe.
7. The cylinder de-plugging method according to claim 6, wherein said cylinder de-plugging device further comprises a second pressure gauge (5), said second pressure gauge (5) being adapted to be connected between said air intake valve (12) and a drain of said cylinder,
the injecting of high pressure gas into the drain pipe of the condensate cylinder through the purge assembly comprises:
injecting the high-pressure gas in the gas cylinder (11) into the liquid condensation cylinder through a liquid discharge pipe of the liquid condensation cylinder, and observing the reading change of the second pressure gauge (5) after injecting for a period of time;
if the reading descending amplitude of the second pressure gauge (5) reaches a first threshold value, the drain pipe is determined to be dredged;
alternatively, the first and second electrodes may be,
and if the descending amplitude of the reading of the second pressure gauge is smaller than the first threshold value, injecting high-pressure gas with higher pressure into the condensation cylinder, and observing the change of the reading of the second pressure gauge (5) again after injecting the high-pressure gas for a period of time until the descending amplitude of the reading of the second pressure gauge (5) reaches the first threshold value.
8. The cylinder de-plugging method of claim 6, further comprising:
after the high-pressure gas is stopped being input, if the discharging assembly (2) does not discharge impurities and accumulated liquid, the high-pressure gas is injected into the condensate cylinder through the purging assembly (1) again, and after the high-pressure gas is injected for a period of time, the discharging condition of the impurities and the accumulated liquid in the blow-down valve (21) is observed again until the impurities and the accumulated liquid are discharged from the discharging assembly (2);
alternatively, the first and second electrodes may be,
after stopping inputting high-pressure gas, if emission subassembly (2) have the hydrops is discharged just the quality of water of hydrops is more clear, then to pour into pressure higher in the lime set jar high-pressure gas pours into a period of time back, observes once more discharge in blowoff valve (21) the discharge condition of impurity and hydrops, until there is a large amount of in the blowoff valve impurity the hydrops is discharged.
9. The cylinder de-plugging method of claim 8, further comprising:
when the accumulated liquid discharged by the discharge assembly (2) is changed from the accumulated liquid containing a large amount of impurities to the accumulated liquid with cleaner water quality, high-pressure gas in the gas cylinder (11) is injected into the condensate cylinder through a liquid discharge pipe of the condensate cylinder again;
after a period of injection, stopping the injection of the high-pressure gas, so that the residual impurities and accumulated liquid in the condensate cylinder are discharged from the discharge assembly (2).
10. The cylinder unblocking method according to any one of claims 6 to 9, wherein said cylinder unblocking apparatus further comprises a first pressure gauge (4), said first pressure gauge (4) being connected between an outlet of said gas cylinder (11) and an inlet of said gas inlet valve (12),
the blockage removing method for the condensate cylinder further comprises the following steps:
before purging and dredging impurities and accumulated liquid in the condensate cylinder, injecting the high-pressure gas in the gas cylinder (11) into a pipeline between a gas outlet of the gas cylinder (11) and an inlet of a liquid discharge valve on the liquid discharge pipe;
stopping injecting the high-pressure gas when the reading of the first pressure gauge (4) reaches a second threshold value;
observing the change of the reading of the first pressure gauge (4);
if the reading of the first pressure gauge (4) is unchanged, determining that the purging assembly (1) has no leak point;
alternatively, the first and second electrodes may be,
if the reading of the first pressure gauge (4) is reduced, determining that a leak point exists in the purging assembly (1), and checking and reassembling the purging assembly (1).
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