CN117006310B - Switching valve switching compensation method and device for analysis equipment and analysis equipment - Google Patents
Switching valve switching compensation method and device for analysis equipment and analysis equipment Download PDFInfo
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- CN117006310B CN117006310B CN202311281775.6A CN202311281775A CN117006310B CN 117006310 B CN117006310 B CN 117006310B CN 202311281775 A CN202311281775 A CN 202311281775A CN 117006310 B CN117006310 B CN 117006310B
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- 238000000034 method Methods 0.000 title claims abstract description 57
- 230000008569 process Effects 0.000 claims description 19
- 238000004590 computer program Methods 0.000 claims description 18
- 230000003068 static effect Effects 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 2
- 238000012742 biochemical analysis Methods 0.000 abstract description 2
- 238000002347 injection Methods 0.000 description 14
- 239000007924 injection Substances 0.000 description 14
- 239000003550 marker Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 10
- 238000004891 communication Methods 0.000 description 9
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- 239000000243 solution Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
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- 238000005859 coupling reaction Methods 0.000 description 3
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- 239000012502 diagnostic product Substances 0.000 description 2
- 238000000338 in vitro Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/072—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
- F16K11/074—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with flat sealing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
- F16K31/042—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves with electric means, e.g. for controlling the motor or a clutch between the valve and the motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
Abstract
The application relates to a switching valve switching compensation method and device for analysis equipment and analysis equipment, and belongs to the technical field of biochemical analysis equipment; acquiring a switching compensation value of a switching valve, wherein the switching compensation value is determined based on a difference value between a pressure value in a channel of the switching valve and a preset standard value; and switching and compensating the switching valve based on the switching and compensating value. According to the switching valve switching compensation method and device for the analysis equipment and the analysis equipment, the preset standard value is set in advance, the switching compensation value is determined based on the difference value between the pressure value and the preset standard value, error compensation is carried out on the switching valve based on the switching compensation value, positioning accuracy when the switching valve switches channels is improved, and accuracy of the analysis equipment is improved.
Description
Technical Field
The present disclosure relates to biochemical analysis devices, and more particularly, to a switching compensation method and device for a switching valve of an analysis device, and an analysis device.
Background
The multi-channel switching valve has small size, fast switching, less residue and high pressure resistance, and is widely applied to numerous precise instruments and equipment including IVD (in vitro diagnostic products; in vitro diagnostic product) equipment. The switching valve belongs to rotary type runner switching, and the runner is switched by driving the connecting piece through motor rotation, and different channels are positioned to realize communication, which means that the rotation angle needs to be highly accurate so as to ensure the smoothness of the runner. The multi-channel switching valve needs to have extremely high positioning accuracy and control logic requirements, and particularly, the positioning accuracy is particularly important under the requirements of high liquid path accuracy and high liquid path pressure requirements. The problem of inaccurate positioning is very easy to generate when the switching valve switches the flow channel, and any slight inaccurate positioning can cause the increase of the system resistance of the analysis equipment, influence the system flow and further influence the accuracy of the analysis result; more severe positioning inaccuracies may also lead to switching valve cross-flow, cross-contamination, and spurious results.
Disclosure of Invention
Based on this, it is necessary to provide a switching valve switching compensation method and device for an analysis device and an analysis device, so as to solve the technical problem that the switching valve in the prior art is easy to be positioned inaccurately when switching the flow channel.
To this end, according to an aspect of the present application, there is provided a switching valve switching compensation method for an analysis apparatus, the switching valve switching compensation method for an analysis apparatus including:
the switching valve performs primary channel switching movement;
setting a preset standard value of the pressure in a channel of the switching valve;
acquiring a pressure value in a channel of a switching valve;
acquiring a switching compensation value of a switching valve, wherein the switching compensation value is determined based on a difference value between a pressure value in a channel of the switching valve and a preset standard value;
and switching and compensating the switching valve based on the switching and compensating value.
Optionally, the switching valve includes a rotor and a stator capable of rotating relatively, and when the pressure value is inconsistent with the preset standard value in the process of switching compensation of the switching valve based on the switching compensation value, the relative position state between the rotor and the stator includes a left-biased state or a right-biased state, and the compensation direction of switching compensation of the switching valve is determined based on the type of the relative position state.
Optionally, if the pressure value in the channel does not reach the preset standard value all the time in the changing process, the relative position state is in a left-biased state; if the pressure value in the channel reaches a preset standard value in the changing process, the relative position state is in a right-biased state.
Optionally, after performing switching compensation on the switching valve based on the switching compensation value, the method further includes the steps of:
and recording the number of the channel, setting the switching compensation value as a memory compensation value, uploading the memory compensation value to the system, and switching the switching valve to perform switching compensation according to the memory compensation value after switching to the channel with the number again.
Optionally, the switching valve includes a rotor and a stator capable of rotating relatively, and further includes the following steps after the switching valve performs a channel switching movement:
the switching valve enters an awakening mode after the standstill is overtime, and the switching valve in the awakening mode switches channels with a preset moment, wherein the preset moment is determined based on static friction force between the rotor and the stator.
Alternatively, the static friction force is determined based on the contact area between the rotor and the stator and the contact stress between the rotor and the stator.
According to another aspect of the present application, there is provided a switching valve switching compensation device for an analysis apparatus, the switching valve switching compensation device for an analysis apparatus including:
the driving control module is used for controlling the channel switching movement of the switching valve;
the pressure acquisition module is used for acquiring the pressure in the channel of the switching valve;
and the photoelectric switch trigger is used for detecting whether the switching valve is switched into position.
Optionally, the drive control module and the photoelectric switch trigger are mounted within the switching valve.
According to another aspect of the present application, there is provided an analysis device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing a switching valve switching compensation method for an analysis device as described above when executing the computer program.
According to another aspect of the present application, there is provided a computer readable storage medium storing a computer program which, when executed by a processor, implements a switching valve switching compensation method for an analysis device as described above.
Compared with the prior art, the beneficial effects that this application exists are: the method and the device have the advantages that the preset standard value is set in advance, the pressure value in the channel is compared with the preset standard value, the switching compensation value is determined based on the difference value between the pressure value and the preset standard value, error compensation is conducted on the switching valve based on the switching compensation value, the positioning precision of the switching valve is improved, the pressure in the channel tends to the standard value, the sampling precision and the pressure value of each channel of the switching valve are guaranteed to be in a reasonable range, and the accuracy of the analysis result of analysis equipment is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application 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 below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a switching compensation method of a switching valve for an analysis device according to an embodiment of the present application;
fig. 2 is a schematic diagram of a connection relationship between a switching valve switching compensation device and a switching valve for an analysis device according to an embodiment of the present disclosure;
fig. 3 is a schematic flow chart of steps S1 to S6 of a switching valve switching compensation method for an analysis device according to an embodiment of the present disclosure;
fig. 4 is a schematic flow chart of step S1 and step S7 of a switching valve switching compensation method for an analysis device according to an embodiment of the present application;
fig. 5 is a schematic diagram of a relationship between positioning accuracy and pressure value of a switching valve according to an embodiment of the present application.
Reference numerals illustrate:
10. a switching valve; 20. a drive control module; 30. a pressure acquisition module; 40. an optoelectronic switch trigger.
Detailed Description
In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Referring to fig. 1 and fig. 3 to 5 together, according to an aspect of the present application, an embodiment of the present application provides a switching valve switching compensation method for an analysis apparatus, the switching valve switching compensation method for an analysis apparatus includes the steps of:
step S1: the switching valve performs one channel switching movement.
Step S2: a preset standard value of the pressure in the channel of the switching valve is set.
Specifically, the preset standard value is a minimum pressure value in the channel in the whole switching process.
Further, the passages of the rotor and the passages of the stator may be slightly changed during a long time use, and thus there may be a case where the preset standard value is not the minimum pressure value, in order to ensure that the preset standard value is selected accurately, it is necessary to constantly monitor the pressure value change process of the passages throughout the switching process of the rotor and the stator, even if the actual minimum pressure value is set to the preset standard value.
Step S3: the pressure value in the passage of the switching valve is acquired.
Step S4: and acquiring a switching compensation value of the switching valve, wherein the switching compensation value is determined based on the difference value between the pressure value in the channel of the switching valve and a preset standard value.
Step S5: and switching and compensating the switching valve based on the switching and compensating value.
Step S6: and recording the number of the channel, setting the switching compensation value as a memory compensation value, uploading the memory compensation value to the system, and switching the switching valve to perform switching compensation according to the memory compensation value after switching to the channel with the number again.
Step S7: the switching valve enters an awakening mode after the standstill is overtime, and the switching valve in the awakening mode switches channels with a preset moment, wherein the preset moment is determined based on static friction force between the rotor and the stator.
In the embodiment of the application, the switching compensation method sets a preset standard value in advance, compares the pressure value in the channel with the preset standard value, determines the switching compensation value based on the difference value between the pressure value and the preset standard value, performs error compensation on the switching valve based on the switching compensation value, improves the positioning precision of the switching valve, leads the pressure in the channel to trend to the standard value, ensures that the sampling precision and the pressure value of each channel of the switching valve are in a reasonable range, and improves the accuracy of the analysis result of the analysis equipment. Only about 0.2 seconds is needed in the whole compensation process, and the use is not affected.
Meanwhile, the valve has a positioning compensation memory function, each channel only needs to carry out pressure feedback once, the control system can obtain compensation parameters and memorize the parameters, the compensation parameters can be referred to for each later switching, and frequent feedback calculation is not needed.
At the same time, the present application adds a unique wake-up function. After the switching valve does not act for a long time, the valve body part is in a static friction state, and when the switching valve is restarted, a larger moment is required to be output to overcome the static friction force. Therefore, the driving controller provided with the switching valve has a wake-up function, and when the switching valve is restarted, the control system outputs a variable current value to improve the moment, reduce the step loss risk, ensure that the switching valve can be smoothly switched to a designated channel, and improve the use reliability.
It should be noted that, when the difference between the pressure value in the channel of the switching valve and the preset standard value exceeds the preset difference, it is judged that the switching valve needs to perform switching compensation. When the difference between the pressure value in the passage and the preset standard value is smaller than the preset difference, even if there is a positional deviation between the rotor and the stator, the influence of the deviation on the switching valve may be regarded as negligible, and switching compensation may not be performed.
Referring to fig. 5, a simple description will be made of the principle of how to perform switching compensation on the switching valve based on the switching compensation value. For example, when the pressure value in the channel is 150, the positioning accuracy is 60%, the ratio of the positioning accuracy to the overlapping area of the channel of the rotor and the channel of the stator is 60%, and further the offset angle of the relative position between the rotor and the stator can be converted, and the switching valve can perform switching compensation according to the offset angle, so that the overlapping area of the channel of the rotor and the channel of the stator is improved.
Specifically, referring to fig. 3 and fig. 4 together, in step S1, the method specifically includes the following steps: the driving control system of the switching valve sends a channel switching instruction to the switching valve, and the control system also controls an external pressure source to start to convey pressure; the switching valve performs switching action after receiving the channel switching instruction; after the switching valve is switched into place, the switching action is stopped, whether the switching valve is switched into place or not is detected through the photoelectric switch trigger, and after the photoelectric switch trigger is triggered, the switching action is stopped by the switching valve.
It will be appreciated that the switching valve comprises a rotor and a stator which are capable of relative rotation, the stator being stationary, the stator being provided with a hole in the middle and a plurality of holes arranged circumferentially; the rotor can rotate, and a straight groove is arranged on the surface of the rotor facing the stator; the straight slot only communicates with the hole in the middle of the stator and any hole on the circumference after the rotor rotates and switches every time. The external pressure source may supply a pressure source to one or all of the passages of the stator, not only.
Here, fig. 4 is a schematic flow chart of step S1 and step S7, and does not involve pressure monitoring, so that in step S1 in fig. 4, the start of pressure delivery by the pressure source is not described, and it does not represent that the pressure source does not deliver pressure.
In one embodiment, the switching valve includes a rotor and a stator capable of rotating relatively, and when the pressure value does not coincide with a preset standard value in the switching compensation of the switching valve based on the switching compensation value, the relative position state between the rotor and the stator includes a left-hand state or a right-hand state, and the compensation direction of the switching valve for the switching compensation is determined based on the type of the relative position state.
Referring to fig. 5, in the process of relative rotation between the rotor and the stator, the communication area of the channels of the rotor and the channels of the stator gradually increases from 0 to the maximum value, and in the process of gradually increasing the communication area from 0 to the maximum value, the positioning accuracy of the rotor and the stator gradually increases from 0% to 100%, and the rotor and the stator within the range (excluding the maximum value) are in a left-biased state. The communication area of the channels of the rotor and the stator is gradually reduced from the maximum value to 0, in the process of gradually reducing the communication area from the maximum value to 0, the positioning accuracy of the rotor and the stator is gradually reduced from 100% to 0%, the rotor and the stator in the range (excluding the maximum value) are in a right-offset state, and in the process of gradually increasing the communication area from 0 to the maximum value, the positioning accuracy of the rotor and the stator is gradually increased from 0% to 100%.
Therefore, as can be seen from the table in fig. 5, different accuracy rates correspond to different pressure values, so that by detecting the pressure values in the channels, the positioning accuracy rate corresponding to the pressure values can be obtained from the relationship diagram in fig. 5, but the positioning accuracy rate of the same value corresponds to two conditions, and the rotor and the stator may be in a left-biased state or a right-biased state. The compensation direction of the switching compensation can be determined only by judging the relative position state between the rotor and the stator.
The embodiments of the present application provide various methods for determining a compensation direction of switching compensation:
the method comprises the following steps:
in one embodiment, referring to fig. 5, if the pressure value in the channel does not reach the preset standard value all the time in the changing process, the relative position state is in a left-biased state; if the pressure value in the channel reaches a preset standard value in the changing process, the relative position state is in a right-biased state.
In the method, the pressure value in the channel is monitored in real time, the pressure value in the channel is the maximum value before the channel of the rotor and the channel of the stator are not communicated, after the channel of the rotor and the channel of the stator are communicated, the pressure value in the channel is gradually reduced and approaches to a preset standard value (minimum pressure value), if the pressure value in the channel is not reduced to the preset standard value all the time in the changing process, the fact that the channel of the rotor and the channel of the stator are not fully connected is indicated, and then the relative position state of the rotor and the stator is judged to be in a left-biased state.
Similarly, it is easy to think that if the pressure value in the channel reaches the preset standard value in the changing process, it is indicated that the channel of the rotor and the channel of the stator are offset after being completely communicated, and then the relative position state of the rotor and the stator is judged to be in a right-offset state.
The method only needs to detect whether the pressure value of the channel reaches the preset standard value, and has simple principle and small calculation amount.
The second method is as follows:
and secondly, after the switching valve stops moving, performing pressure detection on the channel, and when the detected pressure value is inconsistent with a preset standard value, continuously moving the switching valve for a small distance according to the fixed parameter in the original moving direction, performing pressure detection on the channel again, comparing the two detected pressure values, and further judging the compensation direction. Specifically, if the second pressure value is smaller than the first pressure value, it is indicated that the two pressure values are both in the left half in fig. 5, and the relative position state of the rotor and the stator is determined to be in a left-biased state; if the second pressure value is greater than the first pressure value, it is determined that the relative position states of the rotor and the stator are in a right-biased state, indicating that both pressure values are in the right half of fig. 5.
It should be noted that, as described above, the switching valve is switched and compensated only when the difference between the pressure value in the passage of the switching valve and the preset standard value exceeds the preset difference. The fixed parameter for judging the compensation direction is set according to a preset difference, for example, the preset difference is a difference between a pressure value with the positioning accuracy of 90% and a preset standard value (with the positioning accuracy of 100%), and the fixed parameter for judging the compensation direction does not exceed the positioning accuracy of 10%.
Exemplary, the embodiment of the application is used for judging the positioning accuracy rate of the fixed parameter of the compensation direction to be 1% -5%.
In one embodiment, referring to fig. 1 and fig. 3 together, after performing switching compensation on the switching valve based on the switching compensation value, the method further includes the following steps:
step S6: and recording the number of the channel, setting the switching compensation value as a memory compensation value, uploading the memory compensation value to the system, and switching the switching valve to perform switching compensation according to the memory compensation value after switching to the channel with the number again.
It should be noted that the error generated in the above-mentioned channel is generally caused by a structural defect, so that when the switching valve is switched to the defective channel again, the channel still has the deviation of the last compensation value, and the present application can memorize the deviation value of the numbered channel, and can refer to the compensation parameter to perform switching compensation every time when the switching valve is switched to the numbered channel, without frequent feedback calculation.
In one embodiment, referring to fig. 1 and fig. 4 together, the switching valve includes a rotor and a stator capable of rotating relatively, and further includes the following steps after the switching valve performs a channel switching motion:
step S7: the switching valve enters an awakening mode after the standstill is overtime, and the switching valve in the awakening mode switches channels with a preset moment, wherein the preset moment is determined based on static friction force between the rotor and the stator.
After the switching valve does not act for a long time, the valve body part is in a static friction state, and when the switching valve is restarted, a larger moment is required to be output to overcome the static friction force. Therefore, the driving controller provided with the switching valve has a wake-up function, and when the switching valve is restarted, the control system outputs a variable current value to improve the moment, reduce the step loss risk, ensure that the switching valve can be smoothly switched to a designated channel, and improve the use reliability.
Further, the output current is controlled by the driving program of the switching valve, so that the magnitude of the rotating moment when the rotor rotates is changed. The larger the static friction, the larger the output current; when the switching valve is in a dynamic friction state after running, the dynamic friction force is smaller than the static friction force, so that the output current can be reduced, and the purposes of reducing the power consumption and the temperature are achieved.
In one embodiment, the static friction force is determined based on the contact area between the rotor and the stator and the contact stress between the rotor and the stator.
The larger the contact area between the rotor and the stator is, the larger the static friction force between the rotor and the stator is; the greater the contact stress between the rotor and stator, the greater the static friction between the two.
According to another aspect of the present application, an embodiment of the present application further provides a switching valve for an analysis apparatus, the switching valve including a stator and a rotor capable of rotating relative to the stator, a plurality of grooves being provided on an end surface of the rotor facing the stator, a plurality of through holes being provided on the stator corresponding to the plurality of grooves, the switching valve switching between a loading state, a sampling state, and an exhaust state according to a rotation position of the rotor; when the switching valve is in a loading state, the groove and the through hole are at least provided with a loading liquid path; when the switching valve is in a sample injection state, at least a sample injection liquid path is formed between the groove and the through hole; when the switching valve is in the exhaust state, the groove and the through hole are at least formed with an exhaust liquid path.
In this application embodiment, the diverter valve of this application need not external discharge valve, can realize loading, advance appearance and exhaust function through self, and the diverter valve can whether have the bubble to appear in the real-time supervision liquid way, can automatic switch to the exhaust state after the bubble appears and come the bubble discharge, has reduced the exhaust degree of difficulty of diverter valve.
Meanwhile, the analysis equipment of the application provides an automatic valve control system which is high in efficiency, reliable and stable and simple and convenient to operate, solves the problems of complex structure, complex exhaust operation and low analysis efficiency of the analysis equipment, and improves the working efficiency of the analysis equipment.
Meanwhile, compared with manual valve control operation of experimenters, the full-automatic valve control program is integrated in the control software of the original analysis equipment, so that the accuracy and reliability of the analysis equipment are obviously improved; and the integrated software is simple and convenient to operate, no extra hardware is needed, and the analysis equipment can work even if not on duty, so that the workload of experiment operators is greatly reduced.
Specifically, the switching valve further comprises a shell, a containing cavity with an opening at the top is formed in the shell, the rotor is connected with a rotating shaft of the rotating motor, and the rotating motor drives the rotor to rotate. The rotor and the rotating motor are installed in the accommodating cavity together, and the stator cover is arranged at the top opening of the shell and is fixed on the shell through screws.
In one embodiment, a first circular contour line is arranged on the end face of the rotor, facing the stator, the first circular contour line is provided with a first circle center, a first identification point, a second identification point, a third identification point, a fourth identification point, a fifth identification point and a sixth identification point which are used for equally dividing the first circular contour line into six parts are sequentially arranged on the first circular contour line, a linear groove, a first arc groove and a second arc groove are arranged on the rotor, two ends of the linear groove respectively correspond to the first circle center and the first identification point of the first circular contour line, two ends of the first arc groove respectively correspond to the second identification point and the third identification point, and two ends of the second arc groove respectively correspond to the fourth identification point and the fifth identification point.
Illustratively, the first, second, third, fourth, fifth, and sixth identified points are arranged in a clockwise direction on the first circular contour.
In a specific embodiment, a second circular contour line is arranged on the end face, facing the rotor, of the stator, corresponding to the first circular contour line, the second circular contour line is provided with a second circle center, a first mark point, a second mark point, a third mark point, a fourth mark point, a fifth mark point and a sixth mark point which are used for dividing the second circular contour line into six equal parts are sequentially arranged on the second circular contour line, and a first through hole pointing to the first mark point, a second through hole pointing to the second mark point, a third through hole pointing to the third mark point, a fourth through hole pointing to the fourth mark point, a fifth through hole pointing to the fifth mark point, a sixth through hole pointing to the sixth mark point and a seventh through hole pointing to the second circle center are arranged on the stator.
Specifically, disposing the second circular contour corresponding to the first circular contour herein means that the first circular contour and the second circular contour are disposed coaxially. More specifically, the axis of the first circular contour line and the axis of the second circular contour line coincide with the axis of the rotating shaft of the rotating electrical machine.
Illustratively, the first marker, the second marker, the third marker, the fourth marker, the fifth marker, and the sixth marker are arranged along the counterclockwise direction in the second circular outline such that the first marker corresponds to the first marker, the second marker corresponds to the second marker, and so on until the sixth marker corresponds to the sixth marker.
Further, when the switching valve is set to be in any one of a loading state, a sample injection state or an exhaust state, the first mark point is aligned with the first mark point, so that the control system can clearly and clearly determine which through holes on the stator each groove on the rotor is aligned with when the switching valve is in each state.
In one embodiment, the switching valve is externally connected with a sample injection ring, and two ends of the sample injection ring are respectively connected with the first through hole and the fourth through hole; the switching valve is externally connected with a pump body which is connected with the second through hole; the switching valve is externally connected with a column tube which is connected with the third through hole; the switching valve is externally connected with a sampling tube which is connected with the fifth through hole; the switching valve is externally connected with a discharge pipe which is connected with the seventh through hole.
Wherein, the sampling tube and the discharge tube are both in a low-pressure environment, and the pump body and the column tube are in a high-pressure environment.
In one embodiment, referring to the figure, when the switching valve is in the loading state, the linear groove communicates with the first through hole and the seventh through hole, the first arc groove communicates with the second through hole and the third through hole, and the second arc groove communicates with the fourth through hole and the fifth through hole.
Specifically, the sample is injected into the fifth through hole through the sample injection pipe, and the sample can further flow to the fourth through hole because the second arc-shaped groove is communicated with the fourth through hole and the fifth through hole; because the two ends of the sample injection ring are respectively connected with the first through hole and the fourth through hole, the sample can further circulate from the fourth through hole to the first through hole through the sample injection ring; since the linear groove communicates the first through hole and the seventh through hole, the sample may further circulate to the seventh through hole; since the drain pipe is connected to the seventh through hole, the sample is further discharged from the seventh through hole through the drain pipe. In summary, when the discharge tube is discharged with the sample, it is proved that the linear groove, the sample injection ring and the second arc groove are filled with the sample.
In one embodiment, when the switching valve is in the sample injection state, the linear groove is communicated with the sixth through hole and the seventh through hole, the first arc groove is communicated with the first through hole and the second through hole, and the second arc groove is communicated with the third through hole and the fourth through hole.
Illustratively, the rotor of the switching valve is rotated 60 ° clockwise, and the switching valve is switched from the loading state to the sampling state.
Specifically, the pump body conveys high-pressure liquid to the second through hole; because the first arc-shaped groove is communicated with the first through hole and the second through hole, two ends of the sample injection ring are respectively connected with the first through hole and the fourth through hole, and the second arc-shaped groove is communicated with the third through hole and the fourth through hole, a sample can circulate from the second through hole to the first through hole through the first arc-shaped groove, circulate from the first through hole to the fourth through hole through the sample injection ring, and circulate from the fourth through hole to the third through hole through the second arc-shaped groove; since the vial is connected to the third through-hole, the sample eventually enters the vial. In summary, after the switching valve is switched to the sample injection state, the pump body can convey the sample in the sample injection ring to the column tube for detection.
It should be noted that the volume of the sample loop is fixed, and the volume of the sample loop is determined according to the concentration and the response value of the sample, so as to ensure that the sampling and the sample feeding amount are consistent each time, and further improve the accuracy of sample detection.
In one embodiment, when the switching valve is in the exhaust state, the straight line groove communicates with the second through hole and the seventh through hole, the first arc groove communicates with the third through hole and the fourth through hole, and the second arc groove communicates with the fifth through hole and the sixth through hole.
Illustratively, the rotor of the switching valve is rotated counter-clockwise 60 ° such that the switching valve is switched from the loading state to the exhaust state.
When bubbles appear in the liquid path of the pump body, the switching valve is in a venting state so as to discharge the bubbles out of the switching valve. Specifically, since the linear groove communicates the second through hole and the seventh through hole, the pump body is connected to the second through hole, and the discharge pipe is connected to the seventh through hole, the bubble may reach the seventh through hole from the second through hole through the linear groove along with the liquid, and then be discharged out of the switching valve through the discharge pipe.
To sum up, the diverter valve of this application need not external discharge valve, can realize loading, advance appearance and exhaust function through self, after the bubble appears in the liquid way, rotate the rotor and can make pump body and exhaust pipe intercommunication get up, just can conveniently, swiftly discharge the bubble, reduce the exhaust degree of difficulty of diverter valve.
In accordance with another aspect of the present application, referring to fig. 2, an embodiment of the present application further provides a switching valve switching compensation device for an analysis apparatus, including:
a driving control module 20 for controlling the channel switching movement of the switching valve 10;
a pressure acquisition module 30 for acquiring the pressure in the passage of the switching valve 10;
a photoelectric switch trigger 40 for detecting whether the switching valve 10 is switched into position.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In one embodiment, the drive control module 20 and the opto-electronic switch trigger 40 are installed within the switching valve, increasing the integration of the device.
According to another aspect of the present application, an embodiment of the present application further provides an analysis apparatus, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor implements a switching valve switching compensation method for the analysis apparatus as described above when executing the computer program.
According to another aspect of the present application, there is provided a computer readable storage medium storing a computer program which, when executed by a processor, implements a switching valve switching compensation method for an analysis device as described above.
In the above embodiments of the present application, a preset standard value is set in advance, a pressure value in a channel is compared with the preset standard value, a switching compensation value is determined based on a difference value between the pressure value and the preset standard value, error compensation is performed on the switching valve based on the switching compensation value, positioning accuracy of the switching valve is improved, pressure in the channel tends to the standard value, sample adding accuracy and pressure value of each channel of the switching valve are guaranteed to be in a reasonable range, and accuracy of an analysis result of analysis equipment is improved. The switching valve can be applied to switching valves with different channel numbers, can compensate each channel independently, solves the influence caused by part machining errors and assembly errors to a greater extent, and has the characteristics of strong universality and strong popularization.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/terminal and method may be implemented in other manners. For example, the apparatus/terminal embodiments described above are merely illustrative, e.g., the division of the modules or units described above is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units described above, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the above computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each method embodiment described above. The computer program comprises computer program code, and the computer program code can be in a source code form, an object code form, an executable file or some intermediate form and the like. The computer readable medium may include: any entity or device capable of carrying the computer program code described above, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RandomAccess Memory, RAM), an electrical carrier wave signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the content of the computer readable medium described above can be appropriately increased or decreased according to the requirements of the jurisdiction's legislation and the patent practice, for example, in some jurisdictions, the computer readable medium does not include electrical carrier signals and telecommunication signals according to the legislation and the patent practice.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (7)
1. The switching compensation method of the switching valve for the analysis equipment is characterized by comprising the following steps of:
the switching valve performs primary channel switching movement;
setting a preset standard value of the pressure in a channel of the switching valve;
acquiring a pressure value in a channel of the switching valve;
acquiring a switching compensation value of the switching valve, wherein the switching compensation value is determined based on a difference value between a pressure value in a channel of the switching valve and a preset standard value, the switching valve comprises a rotor and a stator which can rotate relatively, the positioning accuracy between the rotor and the stator is determined based on a difference value between the pressure value in the channel of the switching valve and the preset standard value, the positioning accuracy is the proportion of the superposition area of the channel of the rotor and the channel of the stator, and the offset angle of the relative position between the rotor and the stator is calculated according to the proportion of the superposition area;
switching compensation is carried out on the switching valve based on the switching compensation value, the switching valve carries out switching compensation according to the offset angle, and the superposition area of the channel of the rotor and the channel of the stator is increased;
and recording the number of the channel, setting the switching compensation value as a memory compensation value, uploading the memory compensation value to a system, and performing switching compensation by the switching valve according to the memory compensation value after switching to the channel with the number again.
2. The switching compensation method of a switching valve for an analysis apparatus according to claim 1, wherein, in the process of switching compensation of the switching valve based on the switching compensation value, when the pressure value does not coincide with a preset standard value, the relative position state between the rotor and the stator includes a left-hand state or a right-hand state, and the compensation direction in which the switching valve performs switching compensation is determined based on the type of the relative position state.
3. The switching compensation method of a switching valve for an analytical device according to claim 2, wherein the relative position state is in the left-hand state if the pressure value in the passage does not reach the preset standard value all the time during the change; and if the pressure value in the channel reaches the preset standard value in the changing process, the relative position state is in the right deviation state.
4. A switching valve switching compensation method for an analytical device according to any one of claims 1-3, wherein the switching valve comprises a rotor and a stator which are rotatable relative to each other, and further comprising the steps of, after a passage switching movement of the switching valve:
and the switching valve enters an awakening mode after the standstill timeout, and the switching valve in the awakening mode switches channels with a preset moment, wherein the preset moment is determined based on static friction force between the rotor and the stator.
5. The switching valve switching compensation method for an analysis apparatus according to claim 4, wherein the static friction force is determined based on a contact area between the rotor and the stator and a contact stress between the rotor and the stator.
6. An analysis device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements a switching valve switching compensation method for an analysis device according to any one of claims 4-5 when executing the computer program.
7. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the switching valve switching compensation method for an analysis apparatus according to any one of claims 4 to 5.
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| CN202311281775.6A CN117006310B (en) | 2023-10-07 | 2023-10-07 | Switching valve switching compensation method and device for analysis equipment and analysis equipment |
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| CN202311281775.6A CN117006310B (en) | 2023-10-07 | 2023-10-07 | Switching valve switching compensation method and device for analysis equipment and analysis equipment |
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| CN117006310B true CN117006310B (en) | 2024-01-19 |
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