CN112283574B - Inflating device of isolating bag, inflating bottle and inflating method - Google Patents

Inflating device of isolating bag, inflating bottle and inflating method Download PDF

Info

Publication number
CN112283574B
CN112283574B CN201910662733.4A CN201910662733A CN112283574B CN 112283574 B CN112283574 B CN 112283574B CN 201910662733 A CN201910662733 A CN 201910662733A CN 112283574 B CN112283574 B CN 112283574B
Authority
CN
China
Prior art keywords
pressure detection
pressure
flow regulator
isolation
transmission speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910662733.4A
Other languages
Chinese (zh)
Other versions
CN112283574A (en
Inventor
苏灵波
李猛
贾永海
汪嘉伟
杨帆
朱志博
杨利岗
申坤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Petrochina Co Ltd
Original Assignee
Petrochina Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Petrochina Co Ltd filed Critical Petrochina Co Ltd
Priority to CN201910662733.4A priority Critical patent/CN112283574B/en
Publication of CN112283574A publication Critical patent/CN112283574A/en
Application granted granted Critical
Publication of CN112283574B publication Critical patent/CN112283574B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pipe Accessories (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention discloses an inflating device of an isolation bag, the isolation bag, an inflating bottle and an inflating method. The inflator includes: a first electrically controlled valve having an air inlet and an air outlet; the air charging bottle is connected with a pipeline, and one end of the air charging bottle is connected with the air inlet; the isolating bag is connected with the pipeline, and one end of the isolating bag is connected with the air outlet; the pressure detection device is arranged on the connecting pipeline of the isolation bag; the flow regulator is arranged on a connecting pipeline of the inflation bottle and is connected with the pressure detection device in series; the controller is configured to continuously acquire a pressure value detected by the pressure detection device after the pressure in the isolation bag reaches a set value, control the first electrically controlled valve and the flow regulator to be opened when the pressure value detected by the pressure detection device is smaller than the set value, and adjust the valve opening of the flow regulator according to the pressure value detected by the pressure detection device. The invention can avoid the problems of potential safety hazard caused by oil-gas isolation failure due to insufficient pressure of the isolation bag to block the pipeline because of puncture and air leakage of the isolation bag.

Description

Inflating device of isolating bag, inflating bottle and inflating method
Technical Field
The invention relates to the field of oil and gas pipelines, in particular to an inflating device of an isolation bag, the isolation bag, an inflating bottle and an inflating method.
Background
When the oil-gas pipeline is subjected to fire operation (such as welding and cutting operations which possibly generate flame and spark on the oil-gas pipeline), the oil-gas pipeline needs to be plugged, so that oil-gas isolation in the pipeline is realized, and the safety problem caused by the fact that oil gas enters a fire operation area during the fire operation is prevented.
At present, adopt to keep apart the bag and carry out oil gas isolation to the pipeline, during the use, will keep apart in the bag puts into the pipeline, use the nitrogen cylinder to keep apart the bag and carry out nitrogen gas and fill the dress, during filling dress, can make to keep apart the bag and fill required pressure through adjusting the outlet pressure that is located the nitrogen gas relief pressure valve on the pipeline with keeping apart the bag intercommunication to satisfy the oil gas isolation needs in the pipeline.
However, the existing isolation bag adopts nylon cloth as a framework, the wall of the isolation bag is thin, the isolation bag is easily worn by hard objects to cause air leakage when in use, the air leakage is not easy to be found, the pressure of the isolation bag is insufficient to block a pipeline due to the air leakage of the isolation bag after the air inflation is finished, and the oil-gas isolation fails to cause potential safety hazards.
Disclosure of Invention
The embodiment of the invention provides an inflating device, an isolating bag, an inflating bottle and an inflating method for the isolating bag, which can avoid the problem of potential safety hazard caused by failure of oil-gas isolation due to insufficient pressure of the isolating bag to block a pipeline because the isolating bag is punctured and leaks. The technical scheme is as follows:
in a first aspect, an embodiment of the present invention provides an inflator for an isolation bladder, the inflator including: a first electrically controlled valve having an air inlet and an air outlet; one end of the inflation bottle connecting pipeline is connected with the air inlet; the isolating bag is connected with a pipeline, and one end of the isolating bag is connected with the air outlet; the pressure detection device is arranged on the isolation bag connecting pipeline; the flow regulator is arranged on the inflation bottle connecting pipeline and is connected with the pressure detection device in series; and the controller is respectively electrically connected with the first electric control valve, the pressure detection device and the flow regulator, and is configured to continuously acquire the pressure value detected by the pressure detection device after the pressure in the isolation bag reaches a set value, control the first electric control valve and the flow regulator to be opened when the pressure value detected by the pressure detection device is smaller than the set value, and adjust the valve opening of the flow regulator according to the pressure value detected by the pressure detection device.
In an implementation manner of the embodiment of the present invention, the inflator further includes a second electrically controlled valve, the second electrically controlled valve is installed on the connection pipeline of the inflator bottle, and the second electrically controlled valve is electrically connected to the controller.
In another implementation manner of the embodiment of the present invention, the second electrically controlled valve is an electronic stop valve.
In another implementation manner of the embodiment of the present invention, the inflator further includes a pressure relief valve, and the pressure relief valve is installed on the isolation bag connection pipeline.
In another implementation manner of the embodiment of the invention, the inflator further comprises an alarm, and the alarm is electrically connected with the controller.
In another implementation manner of the embodiment of the invention, the pressure detection device is a pressure transmitter.
In a second aspect, embodiments of the present invention provide an isolation bladder comprising an inflation device as described above.
In a third aspect, embodiments of the present invention provide an inflator comprising an inflator device as described above.
In a fourth aspect, embodiments of the present invention provide a method for inflating an isolation bladder, where the method includes: continuously acquiring a pressure detection value in the isolation bag detected by a pressure detection device after the pressure in the isolation bag reaches a set value; when the pressure detection value is smaller than the set value, controlling a flow regulator to inflate the isolation bag at a certain flow transmission speed; and adjusting the flow transmission speed of the flow regulator according to the pressure detection value detected by the pressure detection device.
Optionally, the adjusting the flow transmission speed of the flow regulator according to the pressure detection value detected by the pressure detection device includes: when the pressure detection value is larger than a set value, controlling the current flow transmission speed of a flow regulator to reduce a first regulating quantity, wherein the first regulating quantity is an equal division value of the maximum flow transmission speed of the flow regulator; and when the pressure detection value is smaller than the set value, controlling the current flow transmission speed of the flow regulator to increase a second regulating quantity, wherein the second regulating quantity is an equal division value of the maximum flow transmission speed of the flow regulator.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the inflating device of the isolating bag in the embodiment of the invention comprises a first electric control valve, wherein an air inlet is communicated with an inflating bottle connecting pipeline, an air outlet is communicated with an isolating bag connecting pipeline, a pressure detection device is arranged on the isolating bag connecting pipeline, so that the pressure detection device can detect the pressure in the isolating bag, a controller is also arranged, the controller is electrically connected with the first electric control valve, the pressure detection device and a flow regulator, the controller can acquire the pressure in the isolating bag detected by the pressure detection device, is used for continuously acquiring the pressure value detected by the pressure detection device after the pressure in the isolating bag reaches a set value, controls the first electric control valve and the flow regulator to be opened when the pressure value detected by the pressure detection device is smaller than the set value, and adjusts the valve opening of the flow regulator according to the pressure value detected by the pressure detection device, the purpose of adjusting the inflation speed is achieved by adjusting the flow transmission speed of the flow regulator, namely, the opening of a valve in the flow regulator is adjusted to a proper value in a feedback adjustment mode, so that the inflation speed is balanced with the air leakage speed of the isolation bag, namely, the inflation flow is equivalent to the air leakage flow, and the pressure of the isolation bag can be kept at a set value even under the condition that the isolation bag leaks air. The problem of the isolation bag because of pricking out the gas leakage, make the pressure of isolation bag be not enough shutoff pipeline, and lead to the oil gas isolation to lose efficacy, cause the potential safety hazard is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of an inflator for an isolation bladder according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for inflating an isolation bladder in accordance with an embodiment of the present invention.
The symbols in the drawings represent the following meanings:
1-a first electric control valve, 1 a-an inflation bottle connecting pipeline, 1 b-an isolation bag connecting pipeline, 11-an air inlet, 12-an air outlet, 2-a pressure detection device, 3-a controller, 4-an inflation bottle, 5-an isolation bag, 6-a flow regulator, 7-a second electric control valve, 8-a pressure release valve and 9-an alarm.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In the correlation technique, keep apart the bag and adopt nylon cloth to make the skeleton, use the laminating of multilayer rubber to form to realize shutoff water, oil and gaseous purpose, however keep apart the bag wall thin, easily be pricked by hard thing when using, and difficult discovery after pricking, keep apart the bag gas leakage and can make the pressure of keeping apart the bag be not enough shutoff pipeline after aerifing the completion, lead to the oil gas to keep apart the inefficacy, cause the potential safety hazard.
Therefore, the embodiment of the invention provides an inflating device of an isolation bag. FIG. 1 is a schematic structural diagram of an inflator for an isolation bag according to an embodiment of the present invention. As shown in fig. 1, the inflator includes: the device comprises a first electric control valve 1, an inflation bottle connecting pipeline 1a, an isolation bag connecting pipeline 1b, a pressure detection device 2, a flow regulator 6 and a controller 3. The first electric control valve 1 is provided with an air inlet 11 and an air outlet 12, one end of an inflation bottle connecting pipeline 1a is connected with the air inlet 11, and one end of an isolation bag connecting pipeline 1b is connected with the air outlet 12. The pressure detecting device 2 is mounted on the isolation capsule connection line 1 b. The flow regulator 6 is arranged on the inflation bottle connecting pipeline 1a, and the flow regulator 6 is connected with the pressure detection device 2 in series. The controller 3 is respectively electrically connected with the first electric control valve 1, the pressure detection device 2 and the flow regulator 6, and the controller 3 is configured to continuously acquire a pressure value detected by the pressure detection device 2 after the pressure in the isolation capsule reaches a set value, and when the pressure value detected by the pressure detection device 2 is smaller than the set value, control the first electric control valve 1 and the flow regulator 6 to be opened, and adjust the valve opening of the flow regulator 6 according to the pressure value detected by the pressure detection device 2.
Wherein the set value is a pressure value required to be reached in the isolation bag according to the design requirement.
The inflating device of the isolating bag in the embodiment of the invention comprises a first electric control valve, wherein an air inlet is communicated with an inflating bottle connecting pipeline, an air outlet is communicated with an isolating bag connecting pipeline, a pressure detection device is arranged on the isolating bag connecting pipeline, so that the pressure detection device can detect the pressure in the isolating bag, a controller is also arranged, the controller is electrically connected with the first electric control valve, the pressure detection device and a flow regulator, the controller can acquire the pressure in the isolating bag detected by the pressure detection device, is used for continuously acquiring the pressure value detected by the pressure detection device after the pressure in the isolating bag reaches a set value, controls the first electric control valve and the flow regulator to be opened when the pressure value detected by the pressure detection device is not more than the set value, and adjusts the valve opening of the flow regulator according to the pressure value detected by the pressure detection device, the purpose of adjusting the inflation speed is achieved by adjusting the flow transmission speed of the flow regulator, namely, the opening of a valve in the flow regulator is adjusted to a proper value in a feedback adjustment mode, so that the inflation speed is balanced with the air leakage speed of the isolation bag, namely, the inflation flow is equivalent to the air leakage flow, and the pressure of the isolation bag can be kept at a set value even under the condition that the isolation bag leaks air. The problem of the isolation bag because of pricking out the gas leakage, make the pressure of isolation bag be not enough shutoff pipeline, and lead to the oil gas isolation to lose efficacy, cause the potential safety hazard is avoided.
In this embodiment, the flow regulator 6 includes a valve therein, a valve core of the valve is adjustable, and the size of an opening of the valve can be changed by adjusting the valve core, so as to change the speed of nitrogen passing, that is, the flow transmission speed of nitrogen. The flow regulator 6 is particularly suitable for use in the case where the isolation bag 5 is broken and leaks gas after the isolation bag 5 is completely inflated. After the isolation bag 5 is inflated, when the controller 3 determines that the pressure value detected by the pressure detection device 2 is lower than the set value, the controller 3 controls the first electric control valve 1 to be opened and controls the flow regulator 6 to regulate the valve core of the valve so as to regulate the opening size of the valve in the flow regulator 6, thereby controlling a certain flow rate to inflate the isolation bag 5, and enabling the pressure in the isolation bag 5 to reach the set value again. After the pressure value reaches the set value, the controller 3 acquires the pressure value detected by the pressure detection device 2 in real time, and if the detected pressure value exceeds the set value, the valve core of the valve is adjusted to reduce the size of the opening of the valve in the flow regulator 6 and reduce the flow transmission speed so as to reduce the pressure in the isolation bag 5 to the set value; if the detected pressure value is lower than the set value all the time, the valve core of the valve is adjusted to increase the opening size of the valve in the flow regulator 6, and the flow transmission speed is increased, so that the pressure in the isolation bag 5 is increased to the set value. I.e. by means of feedback regulation, so that the opening of the valve in the flow regulator 6 is adjusted to a suitable value, so that the inflation speed is balanced with the deflation speed of the isolation bladder 5, i.e. the inflation flow is comparable to the deflation flow, so that the pressure of the isolation bladder 5 is maintained at the set value even in the event of a deflation of the isolation bladder 5. The problem of the isolation bag 5 because of pricking out the gas leakage, make the pressure of isolation bag 5 be not enough shutoff pipeline, and lead to the oil gas to keep apart the inefficacy, cause the potential safety hazard is avoided.
In other embodiments of the present invention, when the pressure value detected by the pressure detecting device 2 is not greater than the set value, the controller 3 may also directly control the first electronic control valve 1 to open, so that the isolation bag 5 is inflated by the inflator bottle, and when the pressure value detected by the pressure detecting device 2 is greater than the set value, the controller 3 may control the first electronic control valve 1 to close, so that the isolation bag 5 is stopped being inflated by the inflator bottle, thereby maintaining the pressure value inside the isolation bag at the set value. Because the first electric control valve has the working logic that: when the pressure in the isolating bag is lower than a set value, the first electric control valve is opened to inflate the isolating bag, and when the pressure in the isolating bag is higher than the set value, the first electric control valve is closed to stop inflating the isolating bag. Therefore, the pressure in the isolation bag is liable to be unstable and not always set at the desired value. And after the isolation bag leaks, the air leakage of the isolation bag is continuously carried out, and the electromagnetic valve and the controller can work repeatedly due to the adjustment mode of the first electric control valve. The working principle of the flow regulator is to control the gas to be transmitted at a certain flow transmission speed, so that the flow transmission speed is kept the same as the flow transmission speed of the air leakage of the isolation bag, namely compared with the mode of controlling the flow regulator, the mode of controlling the flow regulator is more convenient to use in the morning.
In the embodiment of the present invention, the Controller may be a Programmable Logic Controller (PLC for short). The programmable logic controller is a programmable memory, in which instructions for executing operations such as logic operation, sequence control, timing, counting, and arithmetic operation are stored, and controls the operation of the machine through digital or analog input/output.
Wherein, the first electrically controlled valve 1 can be a solenoid valve, and the pressure detecting device 2 can be a pressure transmitter. The pressure transmitter can convert the detected pressure signal into an electric signal for transmission, the PLC obtains the electric signal transmitted by the pressure transmitter, and the pressure value in the isolation bag 5 can be obtained through conversion, so that the subsequent opening or closing action of the electromagnetic valve can be controlled.
Illustratively, the set point (the filling of the isolation capsule is completed and the pressure value required in the isolation capsule is reached) may be stored in the PLC. When the PLC acquires the pressure detected by the pressure detection device 2, the PLC can execute a judgment instruction and determine the size relation between the detected pressure value and the set value, when the pressure value detected by the pressure transmitter is not less than the set value, the PLC is controlled to output an instruction to control the closing of the electromagnetic valve, and when the pressure value detected by the pressure transmitter is less than the set value, the PLC is controlled to output an instruction to control the opening of the electromagnetic valve.
Optionally, as shown in fig. 1, the inflator may further include a second electrically controlled valve 7, the second electrically controlled valve 7 is installed on the inflator bottle connection line 1a, and the second electrically controlled valve 7 is electrically connected to the controller 3. The second electrically controlled valve 7 may be, for example, an electronic shut-off valve. In this embodiment, when the pressure transmitter detects that the pressure in the isolation bag 5 suddenly changes and the sudden change value exceeds 10% of the set value, the PLC directly outputs an instruction to control the electronic stop valve to close, so as to cut off the gas, stop the inflation, and prevent the isolation bag 5 from exploding due to the excessive pressure.
As shown in fig. 1, the inflator may further include a relief valve 8, and the relief valve 8 is installed on the isolation bag connection line 1 b. In this embodiment, two valve ports of the pressure release valve 8 are all connected to the isolation capsule connecting pipeline 1b, and the air release port of the pressure release valve 8 is communicated with the external environment, and when the pressure at two valve ports of the pressure release valve 8 exceeds a certain value (like 105% of a set value), the air release port of the pressure release valve 8 is communicated to release the pressure. The redundant pressure in the isolation bag 5 can be discharged through the pressure release valve 8, and the safety and reliability of the inflating device are improved.
As shown in fig. 1, the inflator may further include an alarm 9, and the alarm 9 is electrically connected to the controller 3. When the pressure in the isolation capsule 5 exceeds 110% of the set value, the PLC can also control the alarm 9 to work and send out an alarm so as to remind an operator of online processing and improve the safety.
When the inflating device for the isolating bag provided by the embodiment of the invention is used, firstly, the inflating device is assembled, and the filling device is connected to the inflating bottle 4 and the isolating bag 5, at this time, the first electrically controlled valve 1 and the second electrically controlled valve 7 are closed, and the flow regulator 6 does not work. And then, inflating the isolation bag, detecting the pressure in the isolation bag 5 through the pressure detection device 2, and when the pressure is lower than a set value, controlling the first electric control valve 1 and the second electric control valve 7 to be opened by the controller 3, and controlling the valve of the flow regulator 6 to be opened, so as to realize gas filling of the isolation bag 5 until the pressure in the isolation bag 5 reaches the set value, ending inflation, and closing the first electric control valve 1.
In order to prevent the isolation bag from air leakage, after the inflation is finished, the pressure detection device 2 can continuously detect the pressure in the isolation bag 5, and the controller 3 acquires the pressure value detected by the pressure detection device 2 in real time. And when the detected pressure value is smaller than the set value, the first electric control valve 1 and the flow regulator 6 are opened, and at the moment, the flow regulator 6 inflates the isolation bag at a certain flow transmission speed. The controller 3 continuously obtains the pressure value detected by the pressure detection device 2, and if the detected pressure value exceeds a set value, the opening of the valve in the flow regulator 6 is controlled to be reduced, and the flow transmission speed is reduced, so that the pressure in the isolation bag 5 is reduced to the set value; if the detected pressure value is lower than the set value all the time, the opening of the valve in the flow regulator 6 is controlled to be increased, the flow transmission speed is increased, so that the pressure in the isolation bag 5 is increased to the set value, namely the opening of the valve in the flow regulator 6 is adjusted to an appropriate value in a feedback adjustment mode, so that the inflation speed is balanced with the air leakage speed of the isolation bag 5, and the isolation bag 5 is inflated automatically.
Embodiments of the present invention provide an isolation bag comprising an inflation device as described hereinbefore.
Embodiments of the present invention provide an inflatable bottle comprising a restart device as described hereinbefore.
Wherein, the gas outlet that supplies nitrogen to come in and go out in the gas charging bottle can adopt quick-operation joint to satisfy the quick installation of gas charging bottle and pipeline, conveniently aerify the isolation bag.
FIG. 2 is a flow chart of a method for inflating an isolation bladder in accordance with an embodiment of the present invention. As shown in fig. 2, the method for inflating the isolation bladder comprises the following steps:
step 101: and continuously acquiring the pressure detection value in the isolation bag detected by the pressure detection device after the pressure in the isolation bag reaches a set value.
The inflation method prior to step 101 may include: and controlling the valves of the first electric control valve, the second electric control valve and the flow regulator to be opened so as to inflate the isolation bag.
In order to detect whether the isolation bag leaks in real time, in this embodiment, after the isolation bag is completely inflated (i.e., the internal pressure of the isolation bag reaches a set value after the isolation bag is inflated), the controller may continuously obtain a pressure detection value in the isolation bag detected by the pressure detection device.
The acquired pressure detection value may include the following conditions:
first, the pressure measurement is equal to the set point, indicating that no air leakage exists in the isolation bladder.
And secondly, if the pressure detection value is smaller than the set value, the isolation bag needs to be inflated again under the condition of air leakage.
Thirdly, if the pressure detection value is larger than the set value, the isolating bag is still inflated, and at the moment, whether the flow regulator, the first electric control valve and the second electric control valve are completely closed or not can be checked.
Step 102: when the pressure detection value is smaller than the set value, the flow regulator is controlled to inflate the isolation bag at a certain flow transmission speed.
The flow transmission speed of the flow regulator is related to the size of the valve opening of the flow regulator, and the larger the valve opening of the flow regulator is, the larger the flow transmission speed of the flow regulator is.
Thus, in step 102, the flow regulator is controlled to inflate the isolation bladder at a flow transmission rate, which may be achieved by controlling a valve of the flow regulator to open a degree of opening.
For example, the valve of the flow regulator may be controlled to be fully open, i.e., the isolation bladder is inflated at the maximum flow delivery rate of the flow regulator.
It should be noted that the certain flow transmission speed is not limited to a certain fixed speed or a speed within a certain range, and the certain flow transmission speed may be any value within a flow transmission speed range adjustable by the flow regulator, which is not limited in this embodiment.
Step 103: the flow rate transmission speed of the flow rate regulator is adjusted based on the pressure detection value detected by the pressure detection device.
Since the flow regulator is controlled to inflate the isolation bladder at a certain flow transmission rate in step 102, the flow transmission rate at this time cannot be guaranteed to be the same as the air leakage rate of the isolation bladder, and therefore, the pressure detection value detected by the pressure detection device does not necessarily remain at the set value. That is, step 103 may include the following cases:
first, when the pressure detection value is greater than the set value, the current flow rate transmission speed of the flow regulator is controlled to be reduced by a first regulation amount.
Wherein the first adjustment quantity is an equal division value of the maximum flow transmission speed of the flow regulator. The maximum flow transmission speed of the flow regulator is the corresponding flow transmission speed when the valve opening of the flow regulator is maximum.
Alternatively, the first adjustment amount may be determined by: the maximum traffic transmission speed V is equally divided into N parts, and the first adjustment amount may be taken from one of the N equal parts of the maximum traffic transmission speed, i.e., V/N.
It should be noted that, because the first adjustment amount is determined according to the divided equal number N, it cannot be guaranteed that the current flow transmission speed of the flow regulator is reduced by the first adjustment amount after being adjusted by the flow regulator, and the flow transmission speed after being adjusted by the flow regulator can be smaller than or equal to the air leakage speed of the isolation bladder.
Secondly, when the pressure detection value is smaller than the set value, the current flow transmission speed of the flow regulator is controlled to be increased by a second regulating quantity, and the second regulating quantity is an equal division value of the maximum flow transmission speed of the flow regulator.
Wherein the second adjustment amount is an equal division of the maximum flow transmission speed of the flow regulator. The maximum flow transmission speed of the flow regulator is the corresponding flow transmission speed when the valve opening of the flow regulator is maximum.
Alternatively, the second adjustment amount may be determined by: the maximum traffic transmission speed V is equally divided into N parts and the second adjustment amount may be taken from one of the N equal parts of the maximum traffic transmission speed, i.e., V/N.
In this embodiment, the first adjustment amount may be the same as or different from the second adjustment amount. When the first regulating quantity is different from the second regulating quantity, when the flow regulator is controlled to regulate the current flow transmission speed, the current flow transmission speed can be regulated towards the direction approaching to the direction offsetting the air leakage speed of the isolation bag, and the regulation efficiency is improved. When the first regulating quantity is the same as the second regulating quantity, when the flow regulator is controlled to regulate the current flow transmission speed, the current flow transmission speed may change back and forth between certain two speeds, namely, a dynamic feedback regulation mode is presented, and the pressure of the isolation bag can be effectively ensured to be maintained near a set value.
It should be noted that, because the second adjustment amount is determined according to the divided equal number N, it cannot be guaranteed that the flow transmission speed adjusted by the flow regulator is greater than or equal to the air leakage speed of the isolation bladder by controlling the current flow transmission speed of the flow regulator to increase by one second adjustment amount, that is, when the current flow transmission speed of the flow regulator is adjusted, the current flow transmission speed may be continuously increased by the second adjustment amount until the pressure detection value is not less than the set value.
Third, when the pressure detection value is equal to the set value, the current flow rate transmission speed of the flow regulator is not adjusted.
At this time, the current flow transmission rate of the flow regulator is balanced with the air leakage rate of the isolation bladder, so that the flow regulator does not need to be adjusted.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. An inflator for an isolation bladder, the inflator comprising:
a first electrically controlled valve (1) having an inlet (11) and an outlet (12);
one end of the inflation bottle connecting pipeline (1 a) is connected with the air inlet (11);
one end of the isolating bag connecting pipeline (1 b) is connected with the air outlet (12);
the pressure detection device (2) is arranged on the isolation bag connecting pipeline (1 b);
the flow regulator (6) is arranged on the inflation bottle connecting pipeline (1 a), and the flow regulator (6) is connected with the pressure detection device (2) in series; and
the controller (3) is respectively and electrically connected with the first electric control valve (1), the pressure detection device (2) and the flow regulator (6);
the controller (3) is configured to continuously acquire a pressure detection value detected by the pressure detection device (2) after the pressure in the isolation capsule reaches a set value, and control the first electrically controlled valve (1) and the flow regulator (6) to be opened when the pressure detection value detected by the pressure detection device (2) is smaller than the set value, and adjust the flow transmission speed of the flow regulator (6) according to the pressure detection value detected by the pressure detection device (2),
when the pressure detection value is larger than a set value, controlling the current flow transmission speed of a flow regulator to reduce a first regulating quantity, wherein the first regulating quantity is an equal division value of the maximum flow transmission speed of the flow regulator;
and when the pressure detection value is smaller than the set value, controlling the current flow transmission speed of the flow regulator to increase a second regulating quantity, wherein the second regulating quantity is an equal division value of the maximum flow transmission speed of the flow regulator, and the first regulating quantity and the second regulating quantity are the same or different.
2. The inflator according to claim 1, further comprising a second electrically controlled valve (7), the second electrically controlled valve (7) being mounted on the inflator bottle connection line (1 a), the second electrically controlled valve (7) being electrically connected to the controller (3).
3. An inflator according to claim 2 wherein the second electrically controlled valve (7) is an electronic shut-off valve.
4. The inflator according to claim 1, further comprising a relief valve (8), wherein the relief valve (8) is installed on the isolation bag connection line (1 b).
5. The inflator according to any one of claims 1 to 4, further comprising an alarm (9), wherein the alarm (9) is electrically connected to the controller (3).
6. An inflator according to any one of claims 1 to 4 wherein the pressure sensing device (2) is a pressure transducer.
7. An insulating bladder, characterized in that it comprises an inflation device according to any one of claims 1 to 6.
8. An inflatable bottle, characterized in that it comprises an inflation device according to any one of claims 1 to 6.
9. A method of inflating an isolation bladder, the method comprising:
continuously acquiring a pressure detection value in the isolation bag detected by a pressure detection device after the pressure in the isolation bag reaches a set value;
when the pressure detection value is smaller than the set value, controlling a flow regulator to inflate the isolation bag at a certain flow transmission speed;
adjusting the flow rate transmission speed of the flow regulator according to the pressure detection value detected by the pressure detection device, wherein adjusting the flow rate transmission speed of the flow regulator according to the pressure detection value detected by the pressure detection device comprises:
when the pressure detection value is larger than a set value, controlling the current flow transmission speed of a flow regulator to reduce a first regulating quantity, wherein the first regulating quantity is an equal division value of the maximum flow transmission speed of the flow regulator;
and when the pressure detection value is smaller than the set value, controlling the current flow transmission speed of the flow regulator to increase a second regulating quantity, wherein the second regulating quantity is an equal division value of the maximum flow transmission speed of the flow regulator, and the first regulating quantity and the second regulating quantity are the same or different.
CN201910662733.4A 2019-07-22 2019-07-22 Inflating device of isolating bag, inflating bottle and inflating method Active CN112283574B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910662733.4A CN112283574B (en) 2019-07-22 2019-07-22 Inflating device of isolating bag, inflating bottle and inflating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910662733.4A CN112283574B (en) 2019-07-22 2019-07-22 Inflating device of isolating bag, inflating bottle and inflating method

Publications (2)

Publication Number Publication Date
CN112283574A CN112283574A (en) 2021-01-29
CN112283574B true CN112283574B (en) 2022-06-03

Family

ID=74418686

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910662733.4A Active CN112283574B (en) 2019-07-22 2019-07-22 Inflating device of isolating bag, inflating bottle and inflating method

Country Status (1)

Country Link
CN (1) CN112283574B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113915175A (en) * 2021-08-26 2022-01-11 北京宇航系统工程研究所 Automatic inflation system of low-temperature pressure accumulator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204678059U (en) * 2015-04-15 2015-09-30 中冶南方工程技术有限公司 For the gas control equipment of blowing slag-removing
CN106523903A (en) * 2016-10-14 2017-03-22 中国科学院合肥物质科学研究院 High-pressure gas automatic supply and gas quantity measuring system special for plasma disruption protection
CN206458953U (en) * 2016-12-26 2017-09-01 中国石油天然气集团公司 Duct closing type device
CN207455169U (en) * 2017-08-30 2018-06-05 国网福建省电力有限公司 A kind of movable type SF6 air charging systems
KR102080975B1 (en) * 2017-09-06 2020-02-24 이동준 Charging Device for Respiratory Air Reservoir and Charging Method using the Same
CN208566174U (en) * 2018-05-30 2019-03-01 惠州凯美特气体有限公司 A kind of liquid carbon dioxide fills the charging device of gas cylinder
CN109027664B (en) * 2018-07-13 2020-09-04 国网安徽省电力有限公司检修分公司 Online air supplementing method for SF6 electrical equipment

Also Published As

Publication number Publication date
CN112283574A (en) 2021-01-29

Similar Documents

Publication Publication Date Title
US20200094976A1 (en) Inflation control system
CN112283574B (en) Inflating device of isolating bag, inflating bottle and inflating method
NO872338L (en) HYDRAULIC OR PNEUMATIC PRESSURE CONTROL DEVICE AND ITS USE IN EQUIPMENT FOR REGULATING TIRE PRESSURE ON VEHICLES DURING OPERATION.
CN106104403B (en) The device and method divided equally for flow
JP2007092927A (en) Gas feeder
KR20120084082A (en) Slam shut-off system for gas pressure regulating device
CN209542794U (en) A kind of pressure switch detection device
CN210461025U (en) Start-stop control device of hydrogen diaphragm compressor
CN201035419Y (en) Inflator pressure automatic control device
JP2017172409A (en) Variable capacity type compressor
CN205207143U (en) Air compressor's testing equipment
CN206159574U (en) Pressure signal teletransmission formula relief valve
CN215065156U (en) Pressure self-adaptive adjusting device for flexible inflation wind tunnel test model
JP6196659B2 (en) Hydrogen gas filling system and hydrogen gas filling method
CN203448058U (en) Automatic pressure control reaction kettle
CN104245375A (en) Method for preventing and recognising coolant discharges from complex hydraulic systems
JP6805786B2 (en) Fuel storage system and its diagnostic method
CN107102258A (en) Density monitor capacity checking device
CN112525446A (en) Automatic pressure testing system for hydrogenation station equipment
CN110838693A (en) Dynamic adjustment method, device and system for inflatable cabinet
CN113653473A (en) Water injection system and water injection method
CN218671617U (en) Pneumatic smoke exhaust window failure prevention protection system
CN205666170U (en) Be used for gas filled equipment of SF6 circuit breaker
CN213874941U (en) Online calibration equipment of guide's formula relief valve
CN207935133U (en) Pneumatic equipment air supply system in mine

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant