CN118088919B - Air storage tank replacement structure for oxygen generator without stopping machine - Google Patents
Air storage tank replacement structure for oxygen generator without stopping machine Download PDFInfo
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- CN118088919B CN118088919B CN202410487360.2A CN202410487360A CN118088919B CN 118088919 B CN118088919 B CN 118088919B CN 202410487360 A CN202410487360 A CN 202410487360A CN 118088919 B CN118088919 B CN 118088919B
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 239000001301 oxygen Substances 0.000 title claims abstract description 130
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 130
- 238000003860 storage Methods 0.000 title claims abstract description 71
- 239000007789 gas Substances 0.000 claims abstract description 197
- 238000000034 method Methods 0.000 claims abstract description 95
- 230000008569 process Effects 0.000 claims abstract description 91
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 230000033001 locomotion Effects 0.000 claims description 53
- 230000008859 change Effects 0.000 claims description 26
- 229920001971 elastomer Polymers 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 12
- 230000003068 static effect Effects 0.000 claims description 12
- 238000007405 data analysis Methods 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 7
- 230000010354 integration Effects 0.000 claims description 6
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 238000004148 unit process Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005457 optimization Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 abstract description 3
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 16
- 230000009471 action Effects 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 210000005077 saccule Anatomy 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
Abstract
The invention discloses a gas storage tank replacement structure for an oxygen generator without shutdown, which relates to the technical field of oxygen generation storage, is based on the operation process of the oxygen generator, adopts an active pressure imbalance control mode for realizing the purpose of replacing the gas storage tank without shutdown, and the active pressure imbalance process is mainly reflected in a middle rotary drum and is not directly acted on the working environment of the oxygen generator, in the process, two simple structures of a gas distribution impeller and a floating block are utilized, specifically, an active pressure imbalance state is born by the inside of the middle rotary drum, a control system is utilized for controlling the moving process of the floating block, and the active pressure imbalance state in the middle rotary drum is born by a lower gas bin, and the whole process aims to: the oxygen production working environment of the oxygenerator is kept stable under the running state that the oxygenerator is not stopped, and the stable control is carried out in a mode of stabilizing the pressure fluctuation degree.
Description
Technical Field
The invention relates to the technical field of oxygen production reserves, in particular to an air storage tank replacement structure for an oxygen generator without stopping.
Background
The oxygenerator mainly utilizes an air separation technology to complete the separation process of oxygen and nitrogen, and mainly utilizes structures such as an air storage tank to collect the oxygen therein, and the oxygen collection process mainly depends on the self pressure of the oxygenerator during operation, and the air storage tank needs to be replaced in time after the maximum loading capacity of the air storage tank is reached.
The conventional replacement mode utilizes structures such as a clamp and the like to temporarily seal an oxygen pipeline and then timely replace a new air storage tank, or adds a transfer structure as a transfer station in the oxygen conveying process so as to achieve the purpose of replacing without stopping, but in the process, the inside of the oxygenerator is still in a continuous operation process, and the oxygen conveying process is interrupted by utilizing the structures such as the clamp and the like, so that the condition of pressure unbalance of the increase of the operating pressure or the reduction of the operating pressure in the oxygenerator can be caused, the oxygen production efficiency is influenced under the condition of pressure unbalance, and the operating pressure environment is required to be ensured to be in a relatively stable state in the oxygen production process, so that after the replacement of the air storage tank is completed, the operation pressure environment in the oxygenerator is required to be waited for to be restored to the relatively stable state again, and otherwise, the problem of oxygen purity reduction occurs in the oxygen collection process.
The application provides a solution to the technical problem.
Disclosure of Invention
The invention aims to provide a gas storage tank replacement structure for an oxygen generator without stopping, which is used for solving the problem that the working efficiency in the oxygen production process and the purity in the oxygen collection process are directly influenced due to the unbalance state of the internal operation pressure environment of the oxygen production in the existing process of storing the gas storage tank in the oxygen.
The aim of the invention can be achieved by the following technical scheme: the utility model provides an oxygen generator is with gas holder replacement structure that need not to shut down, includes oxygen generator body and gas bomb, be provided with well rotary drum between oxygen generator body and the gas bomb, the interior slidable mounting of well rotary drum along vertical direction has the kicking block, and well rotary drum along the upside position and the downside position of kicking block set up respectively as last gas storehouse and lower gas storehouse, install the outlet duct corresponding with the gas bomb on the external position of going up the gas storehouse of well rotary drum, install the intake pipe on the end position of giving vent to anger of oxygen generator body;
The floating block is provided with a rubber balloon at a position corresponding to the lower air bin, the rubber balloon is communicated with the inside of the upper air bin, an electric push rod is arranged at the center point of the upper surface of the middle rotary drum, and a transmission shaft of the electric push rod penetrates downwards and is fixedly connected with the floating block;
The transfer cylinder is corresponding to the positions of the upper gas bin and the lower gas bin and is provided with pressure sensors, a controller is arranged outside the oxygenerator body, a control system related to the oxygenerator body and the electric push rod is arranged in the controller, and the control system is used for controlling the movement process of the electric push rod.
Further provided is that: the air inlet pipe is characterized in that a split sleeve is arranged at the tail end of the air inlet pipe, an air pipe corresponding to the upper air bin and the lower air bin is connected to the split sleeve, and a split impeller is rotatably arranged in the split sleeve.
Further provided is that: and a limit ring is arranged on the upper side of the inner wall of the transfer cylinder corresponding to the floating block.
Further provided is that: in the use process, according to the upper limit of gas storage of the gas storage bottle, the following movement process is set:
motion process one: when the gas storage bottle does not reach the upper limit of gas storage, oxygen generated in the oxygenerator body is synchronously conveyed to the upper gas bin and the lower gas bin, and the upper gas bin is used as a transfer area, and the oxygen enters the gas storage bottle through the upper gas bin-gas outlet pipe;
and a second movement process: when the gas storage bottle reaches the upper limit of gas storage, the gas outlet pipe is separated from the gas storage bottle, oxygen is reserved in the upper gas bin and the lower gas bin, and the electric push rod drives the floating block to move upwards so as to control the system to finish the pressure regulating balance process applied to the inside of the middle rotary drum.
Further provided is that: the control system comprises a data integration acquisition unit, a data analysis unit and a motion control unit, wherein the data integration acquisition unit is used for acquiring static parameters in the rotary drum, dynamic parameters of the electric push rod and detection data in the two pressure sensors and sending the static parameters, the dynamic parameters and the detection data to the data analysis unit;
in the data analysis unit, an environment model of a second related motion process is established by using detection data and static parameters, dynamic parameters are substituted into the environment model to obtain balance coefficients, and then the balance coefficients are sent to the motion control unit;
and (3) secondarily optimizing the balance coefficient in the motion control unit to obtain an intermediate threshold value, wherein the intermediate threshold value is used for representing the pressure fluctuation degree in the upper air bin and the lower air bin, and controlling the motion process of the electric push rod by the intermediate threshold value.
Further provided is that: the static parameters comprise volume parameters of an upper air bin, a lower air bin and a rubber balloon, the volume parameters are respectively set to be V 1、V2、V3,V1=V2 and equal to one half of the inner volume of the middle rotary drum, the dynamic parameters are used for representing unit processes in the process that the floating blocks move up and down through the electric push rod, the detection data are used for representing pressure values in the upper air bin and the lower air bin, and the pressure values are represented by P 1、P2.
Further provided is that: the balance coefficient is represented by M, m=p 2/P1, the middle threshold value in the balance coefficient is set to be 0.93, and the calculation process of the balance coefficient according to the motion process is optimized as follows:， Respectively used for representing the oxygen storage and the volume change in the lower gas bin, and setting the following stages:
Stage one: the floating block continuously moves upwards, the pressure in the upper air bin is maintained at a state of P 1, and the pressure in the lower air bin continuously rises and the pressure fluctuation degree is increased;
stage two: the pressure of the lower air bin keeps rising but the fluctuation degree of the pressure is reduced, and the pressure change in the upper air bin is increased on the basis of P 1;
Stage three: after the air outlet pipe is reconnected to a new air storage bottle, the floating block moves downwards to mark the oxygen stock and the volume change in the upper air storage bin and the lower air storage bin in the second stage respectively by Representing, re-optimizing the balance coefficient calculation process to be:， Is used for representing the oxygen supplementing quantity of the lower gas bin to the upper gas bin, Indicating the action time and the oxygen production amount in the unit time of the oxygenerator body, and setting 0.12 based on the pressure fluctuation degree and setting based on the action timeOr (b)Mode(s) of (a)
The invention has the following beneficial effects:
The integral structure is established on the basis of stable operation of the oxygenerator, and adopts an active pressure imbalance control mode for realizing the purpose of replacing the air storage tank without stopping, and the performance of the active pressure imbalance control mode is as follows: in the unable in-process of carrying to the gas holder of oxygen, through the removal process of kicking block in well rotary drum formation pressure unbalance's environment, its aim at: the problem that the oxygen generating effect is reduced due to the fact that the pressure unbalance occurs in the internal working environment of the oxygen generator is avoided, and the upper gas bin is used as a direct structure for communicating the oxygen generator with the gas storage tank, so that the lower gas bin corresponding to the upper gas bin is required to be actively subjected to the pressure unbalance on the basis of the pressure unbalance;
In combination with the above, the movement process of the floating block is stably controlled, which is represented as follows: the method is mainly used for controlling the volume change of the upper gas bin and the lower gas bin, and equivalent conversion is carried out to the pressure change generated by oxygen stock, the whole process is based on the pressure change, the balance coefficient between the upper gas bin and the lower gas bin is realized by controlling the unit process of the floating block, and the problem that oxygen in the middle rotary drum is reversely blown into the oxygenerator is avoided by limiting the middle threshold value in the balance coefficient and the corresponding pressure fluctuation degree and further limiting the pressure unbalance state under the condition of generating active pressure unbalance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a structure for replacing an air tank for an oxygen generator without stopping the machine;
FIG. 2 is a cross-sectional view of a rotor in a structure for replacing an air tank for an oxygenerator without stopping according to the present invention;
FIG. 3 is a cross-sectional view of a drum in a structure for replacing an air tank for an oxygenerator without stopping according to the present invention;
FIG. 4 is a schematic operation diagram of a replacement structure of an air tank for an oxygen generator without stopping the machine according to the present invention.
In the figure: 1. an oxygenerator body; 2. a controller; 3. a middle drum; 301. feeding an air bin; 302. discharging the gas from the gas bin; 4. a pressure sensor; 5. a gas cylinder; 6. an air outlet pipe; 7. an electric push rod; 8. a split sleeve; 9. an air inlet pipe; 10. a rubber balloon; 11. a floating block; 12. a limit ring; 13. an air separation impeller.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
For the oxygen storage process in the existing oxygen production process, the process of temporarily interrupting oxygen delivery or adopting a temporary oxygen storage mode can indirectly cause the condition of pressure unbalance of increasing or reducing the operating pressure in the oxygen generator, the oxygen production efficiency is affected under the condition of pressure unbalance, and the oxygen production process needs to ensure that the operating pressure environment is in a relatively stable state, so that after the replacement of the air storage tank is completed, the oxygen storage tank needs to wait for the operating pressure environment in the oxygen generator to be restored to the relatively stable state again, otherwise, the problem of reducing the oxygen purity occurs in the oxygen collection process, and the application provides a solution for the problem that:
Referring to fig. 1-3, an air storage tank replacement structure for an oxygen generator without shutdown in this embodiment includes an oxygen generator body 1 and an air storage bottle 5, a middle drum 3 is provided between the oxygen generator body 1 and the air storage bottle 5, a floating block 11 is slidingly installed in the middle drum 3 along a vertical direction, an upper side position and a lower side position of the middle drum 3 along the floating block 11 are respectively provided with an upper air bin 301 and a lower air bin 302, an air outlet pipe 6 corresponding to the air storage bottle 5 is installed at an outer position of the middle drum 3 corresponding to the upper air bin 301, and an air inlet pipe 9 is installed at an air outlet end position of the oxygen generator body 1;
The floating block 11 is provided with a rubber saccule 10 at a position corresponding to the lower air bin 302, the rubber saccule 10 is communicated with the inside of the upper air bin 301, the central point of the upper surface of the middle rotary drum 3 is provided with an electric push rod 7, and a transmission shaft of the electric push rod 7 penetrates downwards and is fixedly connected with the floating block 11;
the pressure sensor 4 is arranged at the position of the middle rotary drum 3 corresponding to the upper air bin 301 and the lower air bin 302, the controller 2 is arranged outside the oxygenerator body 1, a control system related to the oxygenerator body 1 and the electric push rod 7 is arranged in the controller 2, the control system is used for controlling the movement process of the electric push rod 7, the opening sleeve 8 is arranged at the tail end position of the air inlet pipe 9, the air pipes corresponding to the upper air bin 301 and the lower air bin 302 are connected to the opening sleeve 8, the opening sleeve 8 is rotatably provided with the air distributing impeller 13, and the limit ring 12 is arranged at the position of the upper side of the inner wall of the middle rotary drum 3 corresponding to the floating block 11.
According to the upper limit of the gas storage of the gas cylinder 5, the following movement process is set:
motion process one: when the gas storage bottle 5 does not reach the upper limit of gas storage, oxygen generated in the oxygenerator body 1 is synchronously conveyed to the upper gas bin 301 and the lower gas bin 302, and the upper gas bin 301 is used as a transfer area, and the oxygen enters the gas storage bottle 5 through the upper gas bin 301-the gas outlet pipe 6;
And a second movement process: when the gas storage bottle 5 reaches the upper limit of gas storage, the gas outlet pipe 6 is separated from the gas storage bottle 5, oxygen is reserved in the upper gas storage bin 301 and the lower gas storage bin 302, and the electric push rod 7 drives the floating block 11 to move upwards so as to control the system to finish the pressure regulating balance process applied in the inner part of the middle rotary drum 3;
Working principle: the whole device is established on the basis of the operation process of the oxygenerator body 1, the operation process of the oxygenerator body 1 is not described, the operation process of the oxygenerator body 1 is set to be in the optimal state, namely the oxygenerator body 1 continuously transmits equal amount of oxygen, and the oxygen is finally stored in the gas storage bottle 5 through the gas inlet pipe 9, the transfer cylinder 3 and the gas outlet pipe 6;
In the first movement process, although oxygen is injected into the upper air bin 301 and the lower air bin 302 synchronously, the oxygen mainly enters the air outlet pipe 6 through the upper air bin 301, the second movement process is mainly required to be described, when the air outlet pipe 6 is pulled out of the air storage bottle 5, the oxygen cannot be discharged through the upper air bin 301-the air outlet pipe 6, and mainly concentrated in the inner part of the transfer cylinder 3 and cannot be discharged, in the process, the floating block 11 needs to be driven by the electric push rod 7 to move up and down, the purpose of the method is mainly to actively force the inner part of the transfer cylinder 3 to be in a state of pressure imbalance, but not directly cause the working environment in the oxygen generator body 1 to be in a state of pressure imbalance, but the state of pressure imbalance in the inner part of the transfer cylinder 3 cannot be mainly used in the upper air bin 301, in the second movement process is also required to be matched with the up and down movement process of the floating block 11, the state of the inner part of the transfer cylinder 3 is mainly concentrated in the lower air outlet pipe 6, and the upper air bin 301 is slowly forced to be restored to the state of pressure imbalance, so that the oxygen generator body is not influenced, and the oxygen generator 1 is not influenced.
Embodiment two:
in order to implement the technical content of the first embodiment, the present embodiment proposes the following description about the control system:
The control system comprises a data integration acquisition unit, a data analysis unit and a motion control unit, wherein the data integration acquisition unit is used for acquiring static parameters in the rotary drum 3, dynamic parameters of the electric push rod 7 and detection data in the two pressure sensors 4 and sending the static parameters, the dynamic parameters and the detection data to the data analysis unit;
in the data analysis unit, an environment model of a second related motion process is established by using detection data and static parameters, dynamic parameters are substituted into the environment model to obtain balance coefficients, and then the balance coefficients are sent to the motion control unit;
The balance coefficient is secondarily optimized in the motion control unit to obtain an intermediate threshold value, wherein the intermediate threshold value is used for representing the pressure fluctuation degree in the upper air bin 301 and the lower air bin 302, and the motion process of the electric push rod 7 is controlled by the intermediate threshold value.
The scheme is as follows: as shown in the first embodiment, the overall device has a simpler structure, so that the overall device needs to be controlled one by one in cooperation with the control system in the implementation process, and the following needs to be described: the static parameters are the volume parameters of the upper air bin 301, the lower air bin 302 and the rubber balloon 10, and are respectively set as V 1、V2、V3, and the following should be further described: in the first movement process, V 1=V2 is just equal to one half of the internal volume of the middle rotary drum 3, and V 3 is also a relative constant value, but in the second movement process, V 1、V2 is subjected to equivalent and controllable change through the electric push rod 7, unequal change occurs in V 3, V 3 is not required to be directly calculated, the dynamic parameter of the electric push rod 7 only represents a unit process in the up-down movement process of the floating block 11, the process is directly related to equivalent and controllable change between V 1、V2, and the detection data are used for representing pressure values in the upper air bin 301 and the lower air bin 302 and are respectively represented by P 1、P2;
And what is described with respect to the environmental model is: the method specifically uses two numerical values of P 1、P2 to represent a balance coefficient, m=p 2/P1, and the calculation mode of the balance coefficient is combined to a movement process, in the first movement process, P 1=P2 needs to be theoretically ensured, namely m=1, but an error exists between P 1、P2, so that an optimized intermediate threshold value in a movement control unit is set to be 0.93, and the optimized intermediate threshold value is used for representing that the pressure in the upper gas chamber 301 is slightly smaller than the pressure in the lower gas chamber 302, specifically because oxygen in the upper gas chamber 301 is kept continuously conveyed to the gas storage bottle 5;
In the second movement process, the pressure imbalance state needs to be actively presented between the upper gas chamber 301 and the lower gas chamber 302, specifically, because the oxygen in the upper gas chamber 301 and the lower gas chamber 302 cannot be discharged, but the oxygenerator body 1 continuously transmits the oxygen into the transfer cylinder 3, and in combination with the first movement process, the upper gas chamber 301 and the lower gas chamber 302 keep the same volume of oxygen, but the following is also required to be expressed: the value of V 2 further includes the value of V 3, and in the first movement process, because of P 1=P2, V 3 is a fixed value, and in the first movement process and referring to fig. 3, the gas separation impeller 13 always keeps rotating clockwise, so that only a certain amount of oxygen remains in the lower gas chamber 302, but in the second movement process, because oxygen in the upper gas chamber 301 and the lower gas chamber 302 cannot flow, the gas separation impeller 13 is in a stopped rotating state, the oxygen in the oxygenerator body 1 cannot be discharged to directly affect the working environment of the oxygenerator body 1, in this way, the electric push rod 7 needs to actively drive the floating block 11 to move upwards, in this way, the volume of the upper gas chamber 301 is reduced, the volume of the lower gas chamber 302 is increased, the oxygen is "forced to be delivered to the lower gas chamber 302", the gas separation impeller 13 is in a counterclockwise rotation, and the pressure environment in the upper gas chamber 301 and the lower gas chamber 302 is changed, and the active pressure imbalance state is presented, which is the purpose: the following changes in volume and pressure within the gas box 302 "replace" the pressure imbalance conditions of the working environment within the oxygenerator body 1.
Embodiment III:
this embodiment is a further explanation of embodiment two:
In the process of upward movement of the floating block 11, the volume of the upper air chamber 301 is reduced, but the actual volume inside the middle drum 3 is not changed, specifically because a part of oxygen is extruded into the rubber balloon 10 and is transferred to the lower air chamber 302 while the volume of the upper air chamber 301 is reduced, but the oxygen in the rubber balloon 10 is not injected into the lower air chamber 302, and the volume of the lower air chamber 302 is further increased by the expansion of the rubber balloon 10 on the basis of continuous increase, which is that: in the first movement process, the pressure change amplitude of the upper gas chamber 301 is lower or even no change, but the pressure change amplitude of the lower gas chamber 302 is larger, and the volume parameters of the upper gas chamber 301, the lower gas chamber 302 and the rubber balloon 10 are converted into oxygen storage amount again, and the oxygen storage amount is used as a judgment basis of the pressure change of the upper gas chamber 301 and the lower gas chamber 302, according to the gas ideal equation: for pv=nrt, as the oxygen inventory increases, the lower gas chamber 302 pressure is assumed to continue to rise on the basis of the unchanged volume of the lower gas chamber 302; however, on the basis that the volume of the lower gas chamber 302 is also continuously increased, the pressure of the lower gas chamber 302 is also continuously increased, and the pressure fluctuation degree is only different in the two states;
substituting m=p 2/P1 into the course of motion two again leads to the re-optimization: therein, wherein Respectively used for representing the oxygen storage and the volume change in the lower gas bin 302, and is further optimized to obtain、Therein, whereinRespectively representing the action time, the oxygen production amount in the unit time of the oxygenerator body 1, the unit progress of the electric push rod 7 and the bottom area of the interior of the transfer cylinder 3Is a relative constant value, but in the second movement process, the following needs to be described: when the pressure in the lower air chamber 302 is larger, the rubber balloon 10 in the lower air chamber 302 is extruded, and the pressure in the upper air chamber 301 is increased based on P 1, so that the second stage of the whole movement process comprises the following steps:
Stage one: the floating block 11 continuously moves upwards, the pressure change in the upper gas bin 301 is maintained in the state of P 1, the pressure in the lower gas bin 302 continuously rises and the pressure fluctuation degree is larger, in this stage, the gas distribution impeller 13 needs to be ensured to rotate anticlockwise, and oxygen in the oxygenerator is supplemented into the lower gas bin 302 according to the rotation direction of the gas distribution impeller 13, and it can be understood that: oxygen generated in the oxygenerator is delivered to the upper gas tank 301 or the lower gas tank 302 in a natural state, but since the pressure in the lower gas tank 302 continuously rises and is greater than the pressure P 1 in the upper gas tank 301, the following pressure change in the lower gas tank 302 changes the flow manner of oxygen, which can be understood as follows: the pressure change in the lower air bin 302 drives the air separation impeller 13 to rotate anticlockwise, and specifically described is: because oxygen in the upper gas bin 301 cannot enter the gas storage tank continuously, oxygen can only enter the lower gas bin 302, so that the gas separation impeller 13 in the stage needs to be ensured to rotate anticlockwise;
Stage two: the pressure of the lower gas chamber 302 keeps rising but the fluctuation degree of the pressure is reduced, the pressure change in the upper gas chamber 301 rises slightly in the state of P 1, in the process, the gas separation impeller 13 still rotates anticlockwise through the pressure in the lower gas chamber 302, but the fluctuation of the pressure in the lower gas chamber 302 is reduced until the pressure in the lower gas chamber 302 can not 'force' the gas separation impeller 13 to rotate anticlockwise, then the gas separation impeller 13 is restored to rotate clockwise by utilizing the state of pressure unbalance, so that oxygen can not 'present' the trend of flowing into the lower gas chamber 302;
Stage three: after reconnecting the outlet pipe 6 to the new cylinder 5, the float 11 moves downwards and in the process it is necessary to mark a second stage in which the oxygen stock, the volume change in the upper gas chamber 301 is marked, in particular: and oxygen inventory, volume change in the lower gas cartridge 302, specifically: Then in stage three, the lower air chamber 302 is reduced in volume and the upper air chamber 301 is increased in volume until the first movement process is restored, which is still mainly dependent on the electric push rod 7, namely 、On the basis of the oxygen supplementation, the upper gas bin 301 continuously conveys oxygen to the gas storage bottle 5 along with the increase of the volume and the increase of the oxygen storage amount, and the upper gas bin 301 is supplemented with oxygen from the lower gas bin 302, specifically, a part of oxygen in the lower gas bin 302 enters the upper gas bin 301 along the air inlet pipe 9, and the gas separation impeller 13 maintains anticlockwise rotation in the process, so the balance coefficient in the third stage is calculated in the following manner: therein, wherein The oxygen supplementing amount of the lower air chamber 302 to the upper air chamber 301 is specifically indicated by the deformation resetting process of the rubber balloon 10 and the volume change generated when the floating block 11 moves downwards, and the oxygen supplementing amount can be specifically: Conversion is performed in such a process that, irrespective of the pressure of oxygen supplied to the gas cylinder 5, only the influence of the upper gas chamber 301 or the lower gas chamber 302 on the oxygenerator body 1 is considered, and here, referring to fig. 3, when the oxygenerator body 1 continues to supply oxygen to the upper gas chamber 301, the gas separation impeller 13 is rotated counterclockwise, and in such a process, the oxygen blown out in the gas chamber 302 also circulates into the upper gas chamber 301 in the rotation direction of the gas separation impeller 13, and explanation is made with respect to the rubber bladder 10: the rubber bladder 10 is only used as a temporary storage structure of oxygen in the upper air chamber 301, but the oxygen in the upper air chamber 301 does not enter the lower air chamber 302, and can be understood as follows: by the rubber balloon 10 "forcing" the lower gas chamber 302 to actively take over the pressure change inside the upper gas chamber 301, and eventually the oxygen in the rubber balloon 10 will "return" to the upper gas chamber 301, the overall illustration is: in the combination stage one to stage two, after reconnecting the gas storage bottle 5, oxygen in the upper gas chamber 301 can enter the gas storage bottle 5, but a part of oxygen is stored in the lower gas chamber 302 and the rubber balloon 10, so that the oxygen in the rubber balloon 10 is directly returned to the upper gas chamber 301, the oxygen in the lower gas chamber 302 is also supplemented into the upper gas chamber 301, but the oxygen in the lower gas chamber 302 is also supplemented into the upper gas chamber 301 through the gas inlet pipe 9, and the gas distributing impeller 13 continuously maintains anticlockwise rotation in the state;
On the contrary, after the oxygen in the lower gas bin 302 is completely supplemented into the upper gas bin 301, the pressure in the lower gas bin 302 is reduced, in the process, the gas separation impeller 13 is not influenced by the pressure in the lower gas bin 302 any more, and the oxygen can not enter the lower gas bin 302 any more, so that the gas separation impeller 13 is directly restored to rotate clockwise, and the oxygen directly enters the gas storage bottle 5 through the upper gas bin 301;
Similarly, when the gas cylinder 5 is temporarily replaced, oxygen produced by the oxygenerator needs to directly enter the lower gas chamber 302 because oxygen cannot be discharged through the upper gas chamber 301, and the volume in the lower gas chamber 302 needs to be increased by ensuring that the floating block 11 moves upwards, in this state, the gas distributing impeller 13 is in a counterclockwise rotating state, oxygen in the upper gas chamber 301 is in a "saturated" state, and oxygen enters the lower gas chamber 302 along the gas inlet pipe 9.
In combination with the above、In the calculation process obtained after the two optimization steps, because the oxygen production amount in unit time of the oxygenerator body 1 is a constant value, the direction and the distance in the whole scheme are mainly controlled by the electric push rod 7 to drive the floating block 11 to move, so that the lower gas bin 302 is used as a key structure for actively bearing pressure change;
further described are: for this calculation, it is first only necessary that the degree of pressure fluctuation in phase two of the movement process be maintained at a value of 0.12, for example the action time t, The pressure fluctuation degree is controlled by the progress of the electric push rod 7; on the contrary atIn this process, it is necessary to ensure that the upper and lower gas tanks 301 and 302 return to the first motion process, in which it is again necessary to ensure that the degree of pressure fluctuation is maintained at a value of 0.12, but with the difference that: Up to And returns to the intermediate threshold of 0.93.
To sum up: based on the oxygenerator operation process, the control mode of active pressure unbalance is adopted for realizing the purpose of replacing the air storage tank without stopping, and the active pressure unbalance process is mainly reflected in the middle rotary drum rather than directly acting on the working environment of the oxygenerator, and in the process, two simple structures of the air dividing impeller and the floating block are utilized, specifically, the active pressure unbalance state is borne by the inside of the middle rotary drum, and the control system is utilized for controlling the moving process of the floating block, so that the active pressure unbalance state in the inside of the middle rotary drum is borne by the lower air bin, and the whole process aims to: the oxygen production working environment of the oxygenerator is kept stable under the running state that the oxygenerator is not stopped, and the stable control is carried out in a mode of stabilizing the pressure fluctuation degree.
The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention as claimed, as it relates to various modifications, additions and substitutions for those skilled in the art, without departing from the inventive concept and without departing from the scope of the invention as defined in the accompanying claims.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (5)
1. The utility model provides an oxygen generator gas holder replacement structure that need not to shut down, includes oxygen generator body (1) and gas bomb (5), its characterized in that, be provided with well rotary drum (3) between oxygen generator body (1) and gas bomb (5), the inside slidable mounting of following of well rotary drum (3) has floating block (11), and well rotary drum (3) are set up respectively for gas-feeding bin (301) and lower gas-feeding bin (302) along the upside position and the downside position of floating block (11), install outlet duct (6) corresponding with gas bomb (5) on the outside position of well rotary drum (3) corresponding to gas-feeding bin (301), install intake pipe (9) on the end position of giving vent to anger of oxygen generator body (1);
The floating block (11) is provided with a rubber balloon (10) at a position corresponding to the lower air bin (302), the rubber balloon (10) is communicated with the inside of the upper air bin (301), the center point of the upper surface of the transfer cylinder (3) is provided with an electric push rod (7), and a transmission shaft of the electric push rod (7) penetrates downwards and is fixedly connected with the floating block (11);
The pressure sensors (4) are arranged at positions of the transfer cylinder (3) corresponding to the upper gas bin (301) and the lower gas bin (302), a controller (2) is arranged outside the oxygenerator body (1), and a control system related to the oxygenerator body (1) and the electric push rod (7) is arranged in the controller (2) and used for controlling the movement process of the electric push rod (7);
A split sleeve (8) is arranged at the tail end of the air inlet pipe (9), the split sleeve (8) is connected with air pipes corresponding to the upper air bin (301) and the lower air bin (302), and a split impeller (13) is rotatably arranged in the split sleeve (8);
in the use process, according to the upper limit of gas storage of the gas storage bottle (5), the following movement process is set:
Motion process one: when the gas storage bottle (5) does not reach the upper limit of gas storage, oxygen generated in the oxygenerator body (1) is synchronously conveyed to the upper gas bin (301) and the lower gas bin (302), the upper gas bin (301) is used as a transfer area, and the oxygen enters the gas storage bottle (5) through the upper gas bin (301) -the gas outlet pipe (6);
And a second movement process: when the gas storage bottle (5) reaches the upper limit of gas storage, the gas outlet pipe (6) is separated from the gas storage bottle (5), oxygen is reserved in the upper gas bin (301) and the lower gas bin (302), and the electric push rod (7) drives the floating block (11) to move upwards so as to control the system to finish the pressure regulating balance process applied to the inside of the middle rotary drum (3).
2. The structure for replacing the air storage tank for the oxygenerator without stopping according to claim 1, wherein a limit ring (12) is arranged on the upper side of the inner wall of the transfer cylinder (3) corresponding to the floating block (11).
3. The structure for replacing the air storage tank for the oxygenerator without stopping according to claim 1, wherein the control system comprises a data integration acquisition unit, a data analysis unit and a motion control unit, wherein the data integration acquisition unit is used for acquiring static parameters in the rotary drum (3), dynamic parameters of the electric push rod (7) and detection data in the two pressure sensors (4) and sending the static parameters, the dynamic parameters and the detection data to the data analysis unit;
in the data analysis unit, an environment model of a second related motion process is established by using detection data and static parameters, dynamic parameters are substituted into the environment model to obtain balance coefficients, and then the balance coefficients are sent to the motion control unit;
And (3) performing secondary optimization on the balance coefficient in the motion control unit to obtain an intermediate threshold value, wherein the intermediate threshold value is used for representing the pressure fluctuation degree in the upper air bin (301) and the lower air bin (302), and controlling the motion process of the electric push rod (7) by using the intermediate threshold value.
4. A structure for replacing an air tank for an oxygenerator without stopping according to claim 3, wherein the static parameters include the volume parameters of the upper air tank (301) and the lower air tank (302) and the rubber balloon (10), and are respectively set to V 1、V2、V3,V1=V2 and equal to half of the internal volume of the middle drum (3), the dynamic parameters are used for representing the unit process of the floating block (11) in the process of moving up and down by the electric push rod (7), and the detection data are used for representing the pressure values in the upper air tank (301) and the lower air tank (302), and are represented by P 1、P2.
5. The structure according to claim 4, wherein M represents a balance coefficient, m=p2/P1, and an intermediate threshold value of the balance coefficient is set to 0.93, and the calculation process of the balance coefficient according to the motion process of two pairs is optimized as follows:、 Are respectively used for representing oxygen storage and volume change in the lower gas bin (302), and are provided with the following stages:
Stage one: the floating block (11) continuously moves upwards, the pressure in the upper air bin (301) is maintained at the state of P 1, and the pressure in the lower air bin (302) continuously rises and the pressure fluctuation degree is increased;
Stage two: the pressure of the lower air bin (302) keeps rising but the fluctuation degree of the pressure is reduced, and the pressure change in the upper air bin (301) is increased on the basis of P 1;
stage three: after the air outlet pipe (6) is reconnected to the new air storage bottle (5), the floating block (11) moves downwards, and the oxygen storage and the volume change in the upper air bin (301) and the lower air bin (302) in the second marking stage are respectively as follows Representing, re-optimizing the balance coefficient calculation process to be:， Is used for representing the oxygen supplementing quantity of the lower gas bin (302) to the upper gas bin (301), Indicating the operation time and the oxygen production amount per unit time of the oxygenerator body (1), and setting 0.12 based on the pressure fluctuation degree and setting based on the operation timeOr (b)In the form of (a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410487360.2A CN118088919B (en) | 2024-04-23 | Air storage tank replacement structure for oxygen generator without stopping machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410487360.2A CN118088919B (en) | 2024-04-23 | Air storage tank replacement structure for oxygen generator without stopping machine |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206755736U (en) * | 2017-04-21 | 2017-12-15 | 开封黄河空分集团有限公司 | A kind of space division purging uses float-ball type partition apparatus |
| CN113464841A (en) * | 2021-07-24 | 2021-10-01 | 李文明 | Safe strorage device is retrieved in natural gas leakage |
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206755736U (en) * | 2017-04-21 | 2017-12-15 | 开封黄河空分集团有限公司 | A kind of space division purging uses float-ball type partition apparatus |
| CN113464841A (en) * | 2021-07-24 | 2021-10-01 | 李文明 | Safe strorage device is retrieved in natural gas leakage |
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