CN107507733B - Liquid level alarm switch detection method based on dynamic liquid level and calibration method of alarm line thereof - Google Patents
Liquid level alarm switch detection method based on dynamic liquid level and calibration method of alarm line thereof Download PDFInfo
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- CN107507733B CN107507733B CN201710847231.XA CN201710847231A CN107507733B CN 107507733 B CN107507733 B CN 107507733B CN 201710847231 A CN201710847231 A CN 201710847231A CN 107507733 B CN107507733 B CN 107507733B
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- 239000007788 liquid Substances 0.000 title claims abstract description 553
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 238000011895 specific detection Methods 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000009434 installation Methods 0.000 description 6
- 230000001174 ascending effect Effects 0.000 description 3
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- 238000002347 injection Methods 0.000 description 2
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/18—Switches operated by change of liquid level or of liquid density, e.g. float switch
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/0007—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm for discrete indicating and measuring
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Abstract
The invention discloses a liquid level alarm switch detection method based on dynamic liquid level and a calibration method of an alarm line thereof.A bracket is provided with a liquid level alarm switch to be detected, and a floater of the liquid level alarm switch to be detected is positioned in a liquid storage container, so that the floater of the liquid level alarm switch to be detected floats in liquid, the liquid level in the liquid storage container is controlled to rise or fall, the floater of the liquid level alarm switch is driven to rise or fall, the liquid level change is automatically or manually controlled to stop when the position of the liquid level alarm switch alarm line, namely the switching state of the opening and closing state of the liquid level alarm switch, is reached, and then a distance measuring device is adopted to measure the calibration parameters of the liquid level alarm switch alarm line. The liquid level alarm switch can detect whether the liquid level alarm switch can work normally or not visually, can calibrate the position of an alarm wire of the liquid level alarm switch accurately, and is high in precision and convenient and rapid to operate.
Description
Technical Field
The invention relates to the field of liquid measurement, in particular to a liquid level alarm switch detection method based on dynamic liquid level and a calibration method of an alarm line of the liquid level alarm switch detection method.
Background
The detection method of the liquid level alarm switch in the prior art is mainly characterized in that a floater of the liquid level alarm switch is manually moved to serve as a detection standard, a liquid level line is drawn on the floater according to the sinking degree of the floater by firstly putting the floater of the liquid level alarm switch into liquid, then the floater of the liquid level alarm switch is manually moved to a position which is just alarmed, and a distance measuring device (generally a straight ruler) is used for measuring the distance between the liquid level line of the floater and a calibration reference surface to serve as a calibration parameter of the liquid level alarm switch alarm line.
The condition that the floater floats on the liquid level cannot be intuitively reflected by adopting a detection method for manually moving the floater of the liquid level alarm switch as the liquid level alarm switch and a calibration method for an alarm line of the liquid level alarm switch; and through the calibration mode of firstly drawing the liquid level line and then measuring the alarm line, on one hand, the calibration intermediate process is increased, the measurement result is unreliable, on the other hand, when the floater is manually moved, the stability in the moving process is poor, the floater is easy to deflect or unbalance, on the other hand, due to the individual difference of the liquid level alarm switch, the sinking and floating degrees of the floater in the liquid are not uniform, and the error value of the measurement result is very large due to various reasons.
Disclosure of Invention
The invention aims to provide a liquid level alarm switch detection method based on dynamic liquid level and a calibration method of an alarm line thereof, aiming at the corresponding defects of the prior art, which can intuitively detect whether the liquid level alarm switch can normally work, can accurately calibrate the position of the alarm line of the liquid level alarm switch only by adjusting the change of the liquid level, have high precision and convenient and quick operation, and greatly improve the detection and calibration efficiency.
The purpose of the invention is realized by adopting the following scheme: the liquid level alarm switch detection device comprises a support and a liquid storage container, the support is used for mounting a liquid level alarm switch to be detected, the liquid storage container is used for storing liquid, the support is located above the liquid storage container, a floater of the liquid level alarm switch to be detected, which is mounted on the support, is located in the liquid storage container, the liquid level alarm switch to be detected is connected with the alarm device, and the alarm device is automatically controlled to give an alarm prompt when the opening and closing states of the liquid level alarm switch are switched in the liquid level lifting process of the liquid storage container (when the normally-open liquid level alarm switch is closed or when the normally-closed liquid level alarm switch is opened in the liquid level alarm switch lifting process). The liquid level alarm switch to be detected can directly control the alarm device to give an alarm, and can also control the alarm device to give an alarm through a relay and the like. Certainly, the liquid level alarm switch to be detected can be connected with a control unit (such as a single chip microcomputer, a PLC and the like), and an alarm device is controlled by the control unit to give an alarm prompt;
the specific detection steps are as follows: the liquid level alarm switch to be detected is arranged on the support, the floater of the liquid level alarm switch to be detected is located in the liquid storage container, the floater of the mounted liquid level alarm switch to be detected floats in liquid, the liquid level in the liquid storage container is controlled to rise or fall, so that the floater of the liquid level alarm switch is driven to rise or fall, whether the liquid level alarm switch can normally work is detected, if the alarm device does not give an alarm in the whole lifting process of the floater (including the process from the liquid completely submerging the floater to the liquid completely separating the floater and the process from the liquid completely separating the liquid and the floater to the liquid completely submerging the floater), the liquid level alarm switch is judged to be faulty or damaged.
The liquid storage container is provided with a liquid inlet or/and a liquid outlet, a liquid inlet control valve for controlling the on-off of a liquid inlet pipeline is arranged on a liquid inlet pipe communicated with the liquid inlet, and a liquid outlet control valve for controlling the on-off of a liquid outlet pipeline is arranged on a liquid outlet pipe communicated with the liquid outlet.
The calibration device comprises a support used for mounting the liquid level alarm switch to be detected, a liquid storage container used for storing liquid, and a distance measuring device used for measuring calibration parameters of the liquid level alarm switch alarm line, wherein the support is positioned above the liquid storage container, so that a floater of the liquid level alarm switch to be detected, which is mounted on the support, is positioned in the liquid storage container. The liquid storage container storing liquid provides a liquid level source for the liquid level alarm switch and provides a reference of the water level. The liquid storage container is provided with a liquid inlet or/and a liquid outlet, a liquid inlet pipe communicated with the liquid inlet is provided with a liquid inlet control valve for controlling the on-off of a liquid inlet pipeline, a liquid outlet control valve for controlling the on-off of the liquid outlet pipeline is arranged on the liquid outlet pipe communicated with the liquid outlet, the liquid level alarm switch to be detected is connected with any one or more of an alarm device, a liquid inlet control valve and a liquid outlet control valve, when the opening and closing states of the liquid level alarm switch are switched in the liquid level lifting process of the liquid storage container, the liquid level alarm switch is used for controlling the liquid inlet control valve and the liquid outlet control valve to stop working and controlling the liquid level of the liquid storage container to stop lifting, when the opening and closing states of the liquid level alarm switch are switched in the liquid level lifting process of the liquid storage container, the liquid level alarm switch is used for controlling the alarm device to give an alarm prompt, the liquid level alarm switch is used for prompting the state of the liquid level alarm switch and reminding an operator to manually control the liquid inlet control valve or the liquid outlet control valve to stop working. The liquid level alarm switch can trigger the liquid inlet control valve and the liquid outlet control valve to automatically control to stop working through the liquid level alarm switch to be detected in the lifting process of the liquid level alarm switch, and can also manually control the liquid inlet control valve and the liquid outlet control valve to stop working under the prompt of the alarm device. The liquid level alarm switch to be detected can directly control the liquid inlet control valve and the liquid outlet control valve to stop working, and can also control the liquid inlet control valve and the liquid outlet control valve to stop working through a relay and the like. Of course, the liquid level alarm switch to be detected can be connected with a control unit (such as a single chip microcomputer, a PLC and the like), and the control unit controls the liquid inlet control valve and the liquid outlet control valve to stop working.
The invention can be provided with one or two of the liquid inlet control valve and the liquid outlet control valve according to the requirement. When the liquid level alarm switch to be detected is connected with the liquid inlet control valve or the liquid outlet control valve, the liquid inlet control valve or the liquid outlet control valve is automatically controlled to stop liquid inlet or liquid outlet by the liquid level alarm switch to be detected while the opening and closing states of the liquid level alarm switch to be detected are switched, so that the liquid level change is automatically controlled to stop. Certainly, the liquid level alarm switch to be detected of the invention can also be disconnected with the liquid inlet control valve or the liquid outlet control valve, at the moment, the alarm device alarms when the opening and closing states of the liquid level alarm switch to be detected are switched, and an operator immediately and manually controls the liquid inlet control valve or the liquid outlet control valve to cut off a pipeline to stop liquid inlet or liquid outlet, thereby controlling and stopping the change of the liquid level.
The specific calibration steps are as follows: the liquid level alarm switch is characterized in that a liquid level alarm switch to be detected is arranged on the support, the floater of the liquid level alarm switch to be detected is located in the liquid storage container, the installed floater of the liquid level alarm switch to be detected floats in liquid, the liquid level in the liquid storage container is controlled to rise or fall, the floater of the liquid level alarm switch is driven to rise or fall, when the position of a liquid level alarm switch alarm line, namely the switching state of the liquid level alarm switch, is reached, the liquid level change is stopped under automatic or manual control, then a distance measuring device is used for measuring calibration parameters of the liquid level alarm switch alarm line, and whether the calibration parameters meet the standard is judged. And measuring the distance between the liquid level and a set calibration reference surface by using a distance measuring device, namely the distance is a calibration parameter of an alarm line of the liquid level alarm switch, wherein the calibration reference surface is parallel to the liquid level. The calibration reference surface is specified by taking the liquid level alarm switch as a reference. The calibration reference surface can be the upper end surface of a mounting frame for mounting the liquid level alarm switch, the lower end surface of the mounting frame and the like.
The distance measuring device adopts a standard measuring instrument as a standard for calibrating an alarm line of the liquid level alarm switch, and adopts a length measuring tool which is suitable for measuring the distance between the liquid level and a calibration reference surface, such as a straight ruler, a vernier caliper or a laser length measuring instrument. When the distance measuring device adopts a vernier caliper, a small hole which can enable a depth gauge of the vernier caliper to penetrate through the liquid level of the transparent container below can be arranged on the mounting frame. When the distance measuring device adopts a laser length measuring instrument, a layer of reflective paper floats on the liquid level of the container. The mounting frame is used for mounting the liquid level alarm switch, and the mounting surface of the mounting frame is parallel to the liquid level.
The distance measuring device is used for automatically measuring the calibration parameters of the alarm line of the liquid level alarm switch, comparing the measured calibration parameters of the alarm line of the liquid level alarm switch with standard values, outputting a detection result to the alarm device, and prompting through the alarm device. The distance measuring device can also store the calibration parameters of the alarm line of the liquid level alarm switch which are automatically measured.
The liquid storage container is a transparent container.
The liquid in the liquid storage container is not limited to water, oil, and the like, and it contains a liquid whose viscosity is not so large as to affect the measurement accuracy.
The liquid storage container and the support used for installing the liquid level alarm switch to be detected are both installed on the base, the support comprises a stand column and a mounting frame used for installing the liquid level alarm switch to be detected, the lower end of the stand column is fixed on the base, the upper end of the stand column is fixedly connected with the mounting frame used for installing the liquid level alarm switch to be detected, the liquid storage container is located below the mounting frame and provides a liquid level source for the liquid level alarm switch, and a reference of a water level is provided. The base provides a platform for testing the components of the device. The mounting bracket is installed on the stand column, and a liquid level alarm switch and a distance measuring device (length measuring tool) to be measured are installed.
The liquid inlet control valve or the liquid outlet control valve adopts an electric control valve or a manual valve.
The alarm device adopts sound, light, electricity and other alarm modes. The alarm device of the embodiment adopts a buzzer or a voice player.
The invention has the advantages that: the liquid level alarm switch provided by the invention has the advantages that the floater or the floating ball of the liquid level alarm switch arranged on the rack floats in liquid, the floater or the floating ball of the liquid level alarm switch is driven to lift by controlling the water level in the container, so that whether the liquid level alarm switch can work normally is detected, the control of the water level is stopped when the liquid level alarm switch gives an alarm, and the distance between the liquid level and the installation surface of the alarm switch is measured by adopting the distance measuring device, namely the position of an alarm line of the liquid level alarm switch. The device provided by the invention is matched with the method provided by the invention, so that whether the liquid level alarm switch can normally work can be visually detected, namely, the liquid level alarm switch is subjected to fault detection, the liquid level alarm switch can be calibrated only by adjusting the change of the liquid level, the position of an alarm line of the liquid level alarm switch is accurately calibrated, the condition that the floater floats on the liquid level can be visually reflected, the precision of a measurement result is high, the operation is convenient and fast, and the detection and calibration efficiency is greatly improved.
Drawings
FIG. 1 is a diagram showing a manner in which a vernier caliper is used in a distance measuring apparatus according to example 1 to measure an alarm line of a liquid level alarm switch;
FIG. 2 is a view showing one mode of measuring an alarm line of a liquid level alarm switch by a straight ruler in the distance measuring apparatus according to embodiment 2;
fig. 3 is a diagram showing a manner in which the distance measuring apparatus in embodiment 3 measures an alarm line of the liquid level alarm switch using a laser length measuring instrument.
In the attached drawing, 1 is a base, 2 is a column, 3 is an installation frame, 4 is a liquid storage container, 51 is a vernier caliper, 52 is a ruler, 53 is a laser length measuring instrument, 6 is a liquid outlet control valve, and 7 is reflective paper.
Detailed Description
Referring to fig. 1, the liquid level alarm switch detection device based on dynamic liquid level comprises a support for mounting a liquid level alarm switch to be detected and a liquid storage container 4 for storing liquid, wherein the support is positioned above the liquid storage container, so that a floater of the liquid level alarm switch to be detected mounted on the support is positioned in the liquid storage container. This embodiment stock solution container all installs on base 1 with the support that is used for the installation to wait to detect liquid level alarm switch, the support includes stand 2 and is used for the installation to wait to detect liquid level alarm switch's mounting bracket 3, the lower extreme of stand is fixed on the base, the upper end of stand with be used for the installation to wait to detect liquid level alarm switch's mounting bracket fixed connection, stock solution container is located the mounting bracket below. The liquid storage container is a transparent container. The liquid in the liquid storage container is not limited to water, oil, and the like, and it contains a liquid whose viscosity is not so large as to affect the measurement accuracy. The liquid level alarm switch to be detected is connected with the alarm device, and when the opening and closing states of the liquid level alarm switch are switched in the liquid level lifting process of the liquid storage container (when the normally-open liquid level alarm switch is closed or the normally-closed liquid level alarm switch is disconnected in the liquid level lifting process of the liquid storage container), the alarm device is automatically controlled to give an alarm prompt. The liquid level alarm switch to be detected can directly control the alarm device to give an alarm, and can also control the alarm device to give an alarm through a relay and the like. Of course, the liquid level alarm switch to be detected can be connected with a control unit (such as a single chip microcomputer, a PLC and the like), and an alarm device is controlled by the control unit to give an alarm. The alarm device adopts sound, light, electricity and other alarm modes. The alarm device of the embodiment adopts a buzzer or a voice player.
The liquid storage container is provided with a liquid inlet or/and a liquid outlet, a liquid inlet control valve for controlling the on-off of a liquid inlet pipeline is arranged on a liquid inlet pipe communicated with the liquid inlet, and a liquid outlet control valve 6 for controlling the on-off of a liquid outlet pipeline is arranged on a liquid outlet pipe communicated with the liquid outlet. The liquid level in the liquid storage container is controlled by the liquid inlet control valve and the liquid outlet control valve. The liquid inlet control valve or the liquid outlet control valve adopts an electric control valve or a manual valve.
Referring to fig. 1, a liquid level alarm switch detection method based on dynamic liquid level adopts the liquid level alarm switch detection device, the bracket is provided with a liquid level alarm switch to be detected, and a floater of the liquid level alarm switch to be detected is positioned in a liquid storage container, and the method specifically comprises the following steps: the float of the mounted liquid level alarm switch to be detected floats in liquid, the liquid level in the liquid storage container is controlled, so that the float of the liquid level alarm switch is driven to ascend or descend, whether the liquid level alarm switch can work normally is detected, and if the alarm device does not give an alarm in the whole ascending and descending process of the float (including the process from the liquid submerging the float to the complete separation of the liquid and the float and the process from the liquid and the complete separation of the float to the complete submerging of the liquid), the alarm device judges that the liquid level alarm switch is faulty or damaged.
A calibration device for a liquid level alarm switch alarm line based on dynamic liquid level comprises a support for mounting a liquid level alarm switch to be detected, a liquid storage container for storing liquid, and a distance measurement device for measuring calibration parameters of the liquid level alarm switch alarm line. The liquid storage container is a transparent container. The liquid in the liquid storage container is not limited to water, oil, and the like, and it contains a liquid whose viscosity is not so large as to affect the measurement accuracy. The liquid storage container storing liquid provides a liquid level source for the liquid level alarm switch and provides a reference of the water level. The bracket is positioned above the liquid storage container, so that the floater of the liquid level alarm switch to be detected, which is arranged on the bracket, is positioned in the liquid storage container. The liquid storage container storing liquid provides a liquid level source for the liquid level alarm switch and provides a reference of the water level. The liquid storage container is provided with a liquid inlet or/and a liquid outlet, a liquid inlet pipe communicated with the liquid inlet is provided with a liquid inlet control valve for controlling the on-off of a liquid inlet pipeline, a liquid outlet control valve for controlling the on-off of the liquid outlet pipeline is arranged on the liquid outlet pipe communicated with the liquid outlet, the liquid level alarm switch to be detected is connected with any one or more of an alarm device, a liquid inlet control valve and a liquid outlet control valve, when the opening and closing states of the liquid level alarm switch are switched in the liquid level lifting process of the liquid storage container, the liquid level alarm switch is used for controlling the liquid inlet control valve and the liquid outlet control valve to stop working and controlling the liquid level of the liquid storage container to stop lifting, when the opening and closing states of the liquid level alarm switch are switched in the liquid level lifting process of the liquid storage container, the liquid level alarm switch is used for controlling the alarm device to give an alarm prompt, the liquid level alarm switch is used for prompting the state of the liquid level alarm switch and reminding an operator to manually control the liquid inlet control valve or the liquid outlet control valve to stop working. The liquid level alarm switch can trigger or control the liquid inlet control valve and the liquid outlet control valve to stop working through the liquid level alarm switch to be detected in the lifting process of the liquid level alarm switch, and can also manually control the liquid inlet control valve and the liquid outlet control valve to stop working under the prompt of the alarm device. The liquid level alarm switch to be detected can directly control the liquid inlet control valve and the liquid outlet control valve to stop working, and can also control the liquid inlet control valve and the liquid outlet control valve to stop working through a relay and the like. Of course, the liquid level alarm switch to be detected can be connected with a control unit (such as a single chip microcomputer, a PLC and the like), and the control unit controls the liquid inlet control valve and the liquid outlet control valve to stop working. The liquid inlet control valve or the liquid outlet control valve adopts an electric control valve or a manual valve.
The invention can be provided with one or two of the liquid inlet control valve and the liquid outlet control valve according to the requirement. When the liquid level alarm switch to be detected is connected with the liquid inlet control valve or the liquid outlet control valve, the liquid inlet control valve or the liquid outlet control valve is automatically controlled to stop liquid inlet or liquid outlet by the liquid level alarm switch to be detected while the opening and closing states of the liquid level alarm switch to be detected are switched, so that the liquid level change is automatically controlled to stop. Certainly, the liquid level alarm switch to be detected of the invention can also be disconnected with the liquid inlet control valve or the liquid outlet control valve, at the moment, the alarm device alarms when the opening and closing states of the liquid level alarm switch to be detected are switched, and an operator immediately and manually controls the liquid inlet control valve or the liquid outlet control valve to cut off a pipeline to stop liquid inlet or liquid outlet, thereby controlling and stopping the change of the liquid level.
The liquid storage container of this embodiment is provided with a liquid outlet, and a liquid outlet control valve for controlling the on-off of the liquid outlet pipeline is arranged on a liquid outlet pipe communicated with the liquid outlet. The liquid outlet control valve adopts an electromagnetic valve. The liquid storage container is filled with quantitative liquid, the float of the mounted liquid level alarm switch to be detected floats in the liquid, the liquid is slowly discharged by opening the liquid outlet control valve, the float of the liquid level alarm switch slowly descends, when the position of the liquid level alarm switch alarm line, namely the switching state of the liquid level alarm switch, is reached, the liquid level alarm switch controls the liquid outlet control valve to be automatically closed, the liquid is stopped to be discharged, the liquid level in the liquid storage container stops descending, at the moment, the distance between the liquid level and a calibration reference plane is measured by adopting a distance measuring device, and the distance is the calibration parameter of the liquid level alarm switch alarm line.
The distance measuring device adopts a standard measuring instrument as a standard for calibrating an alarm line of the liquid level alarm switch, and adopts a length measuring tool which is suitable for measuring the distance between the liquid level and a calibration reference surface, such as a straight ruler, a vernier caliper or a laser length measuring instrument. When the distance measuring device adopts the vernier caliper 51, a small hole which can enable the depth gauge of the vernier caliper to penetrate through the liquid level of the transparent container below can be arranged on the mounting frame.
The mounting frame is used for mounting the liquid level alarm switch, and the mounting surface (upper end surface) of the mounting frame, namely the calibration reference surface, is parallel to the liquid level.
The distance measuring device is used for automatically measuring the calibration parameters of the alarm line of the liquid level alarm switch, comparing the measured calibration parameters of the alarm line of the liquid level alarm switch with standard values, outputting a detection result to the alarm device, and prompting through the alarm device.
The liquid storage container and the support used for installing the liquid level alarm switch to be detected are both installed on the base, the support comprises a stand column and a mounting frame used for installing the liquid level alarm switch to be detected, the lower end of the stand column is fixed on the base, the upper end of the stand column is fixedly connected with the mounting frame used for installing the liquid level alarm switch to be detected, and the liquid storage container is located below the mounting frame.
The alarm device adopts sound, light, electricity and other alarm modes. The alarm device of the embodiment adopts a buzzer or a voice player.
Referring to fig. 1, a method for calibrating an alarm line of a liquid level alarm switch based on dynamic liquid level, which adopts the above-mentioned calibration device, wherein the bracket is provided with the liquid level alarm switch to be detected, and a floater of the liquid level alarm switch to be detected is positioned in a liquid storage container, and the method comprises the following specific steps: the float of the mounted liquid level alarm switch to be detected floats in liquid, and then the liquid level in the liquid storage container is controlled (if liquid with proper liquid level is injected into the liquid storage container, a liquid outlet control valve is opened, the slow descending of the liquid level is controlled, or a liquid inlet control valve is opened to inject liquid into the liquid storage container, the slow ascending of the liquid level is controlled), so that the float of the liquid level alarm switch is driven to ascend or descend, when the position of a liquid level alarm switch alarm line, namely the switching state of the opening and closing state of the liquid level alarm switch, the liquid level change is stopped by automatic or manual control, the distance between the liquid level and a calibration reference surface is measured by a distance measuring device, namely the calibration parameter of the liquid level alarm switch alarm line is obtained.
Example 2
Referring to fig. 2, the distance measuring device of the present embodiment employs a straight edge 52. When the distance measuring device adopts a vernier caliper, the mounting frame can be provided with a small hole which can enable the ruler to penetrate through the liquid level of the transparent container below. Other technical features of the present embodiment are the same as those of embodiment 1.
Example 3
Referring to fig. 3, the distance measuring device according to the present embodiment employs a laser length measuring instrument 53. When the distance measuring device adopts a laser length measuring instrument, a layer of reflective paper 7 floats on the liquid level of the container. Other technical features of the present embodiment are the same as those of embodiment 1. When the position of the liquid level alarm switch alarm line, namely the switching state of the liquid level alarm switch, is reached, the distance measuring device is used for automatically measuring the calibration parameters of the liquid level alarm switch alarm line, comparing the measured calibration parameters of the liquid level alarm switch alarm line with the standard values, outputting the detection result to the alarm device, and prompting through the alarm device. The distance measuring device is mounted on the mounting frame.
The specific measurement steps are as follows: firstly, a liquid level alarm switch to be measured is installed on an installation frame, appropriate liquid is injected into a transparent container, after the liquid level is calm, a liquid outlet control valve is opened to control the slow descending of the liquid level of the liquid or the slow injection of the liquid, the slow ascending of the liquid level of the liquid and the change of the liquid level are controlled, if the liquid completely submerges a floater or is completely separated from the floater, an alarm device does not give an alarm, and the liquid level alarm switch is judged to be faulty or damaged; when the liquid level alarm switch is closed or the alarm device gives an alarm, the liquid outlet control valve is immediately closed or the liquid injection is stopped, the depth scale of the vernier caliper penetrates through the small hole in the rack, one end of the depth scale is just in contact with the liquid level, and the reading of the vernier caliper at the moment is the position of the alarm line of the liquid level alarm switch.
The above is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is apparent that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A liquid level alarm switch detection method based on dynamic liquid level is characterized in that a liquid level alarm switch detection device is adopted, the liquid level alarm switch detection device comprises a support and a liquid storage container, the support is used for installing a liquid level alarm switch to be detected, the liquid storage container is used for storing liquid, the support is located above the liquid storage container, a floater of the liquid level alarm switch to be detected, which is installed on the support, is located in the liquid storage container, the liquid level alarm switch to be detected is connected with an alarm device, and the alarm device is automatically controlled to give an alarm prompt when the opening and closing states of the liquid level alarm switch are switched in the liquid level lifting process of the liquid storage container;
the specific detection steps are as follows: the liquid level alarm switch to be detected is arranged on the support, the floater of the liquid level alarm switch to be detected is positioned in the liquid storage container, the floater of the mounted liquid level alarm switch to be detected floats in liquid, the liquid level in the liquid storage container is controlled to rise or fall, so that the floater of the liquid level alarm switch is driven to rise or fall, whether the liquid level alarm switch can normally work is detected, and if the alarm device does not give an alarm in the whole rising and falling process of the floater, the liquid level alarm switch is judged to be out of order or damaged;
the liquid storage container is provided with a liquid inlet or/and a liquid outlet, a liquid inlet control valve used for controlling the on-off of a liquid inlet pipeline is arranged on a liquid inlet pipe communicated with the liquid inlet, a liquid outlet control valve used for controlling the on-off of a liquid outlet pipeline is arranged on a liquid outlet pipe communicated with the liquid outlet, and the liquid level of the liquid storage container is adjusted through the liquid inlet control valve and the liquid outlet control valve.
2. A method for calibrating a liquid level alarm switch alarm line based on dynamic liquid level is characterized in that a calibration device of the liquid level alarm switch alarm line is adopted, the calibration device of the liquid level alarm switch alarm line comprises a support used for installing a liquid level alarm switch to be detected, a liquid storage container used for storing liquid and a distance measuring device used for measuring calibration parameters of the liquid level alarm switch alarm line, the support is positioned above the liquid storage container, a floater of the liquid level alarm switch to be detected, which is installed on the support, is positioned in the liquid storage container, the liquid storage container is provided with a liquid inlet or/and a liquid outlet, a liquid inlet control valve used for controlling the on-off of a liquid inlet pipeline is arranged on a liquid inlet pipe communicated with the liquid inlet, a liquid outlet control valve used for controlling the on-off of a liquid outlet pipeline is arranged on a liquid outlet pipe communicated with the liquid outlet, and the liquid level alarm switch to be detected and the alarm device, The liquid level alarm switch is used for controlling the liquid inlet control valve and the liquid outlet control valve to stop working and controlling the liquid level of the liquid storage container to stop lifting when the opening and closing states of the liquid level alarm switch are switched in the liquid level lifting process of the liquid storage container;
the specific calibration steps are as follows: the liquid level alarm switch is characterized in that a liquid level alarm switch to be detected is arranged on the support, the floater of the liquid level alarm switch to be detected is located in the liquid storage container, the installed floater of the liquid level alarm switch to be detected floats in liquid, the liquid level in the liquid storage container is controlled to rise or fall, the floater of the liquid level alarm switch is driven to rise or fall, when the position of a liquid level alarm switch alarm line, namely the switching state of the opening and closing state of the liquid level alarm switch, is reached, the liquid level change is stopped under automatic or manual control, and then a distance measuring device is used for measuring calibration parameters of the liquid level alarm switch alarm line.
3. The method of claim 2, wherein: the distance measuring device adopts a standard measuring instrument as a standard for calibrating an alarm line of the liquid level alarm switch.
4. A method according to claim 2 or 3, characterized in that: the distance measuring device adopts a ruler, a vernier caliper or a laser length measuring instrument.
5. The method of claim 2, wherein: the distance measuring device is used for automatically measuring the calibration parameters of the alarm line of the liquid level alarm switch, comparing the measured calibration parameters of the alarm line of the liquid level alarm switch with standard values, outputting a detection result to the alarm device, and prompting through the alarm device.
6. The method of claim 2, wherein: and measuring the distance between the liquid level and a set calibration reference surface by using a distance measuring device, namely the distance is a calibration parameter of an alarm line of the liquid level alarm switch, wherein the calibration reference surface is parallel to the liquid level.
7. The method according to claim 1 or 2, characterized in that: the liquid storage container is a transparent container.
8. The method according to claim 1 or 2, characterized in that: the liquid storage container and the support used for installing the liquid level alarm switch to be detected are both installed on the base, the support comprises a stand column and a mounting frame used for installing the liquid level alarm switch to be detected, the lower end of the stand column is fixed on the base, the upper end of the stand column is fixedly connected with the mounting frame used for installing the liquid level alarm switch to be detected, and the liquid storage container is located below the mounting frame.
9. The method according to claim 1 or 2, characterized in that: the liquid inlet control valve and the liquid outlet control valve adopt electric control valves or manual valves.
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| CN108133866B (en) * | 2018-01-31 | 2020-02-18 | 苏州优德通力科技有限公司 | Float switch with active alarm |
| CN109297559A (en) * | 2018-11-12 | 2019-02-01 | 浙江得诺流体设备有限公司 | A kind of anti-overflow functional test desk |
| CN111157082B (en) * | 2019-12-18 | 2021-04-27 | 深圳市中科华工科技有限公司 | Water level switch calibration detector |
| CN111422932A (en) * | 2020-04-27 | 2020-07-17 | 岳阳佰胜智慧环保科技有限公司 | Operation control method of grating dirt separator |
| CN113175976B (en) * | 2021-05-20 | 2023-11-21 | 扬州大学 | A low water level measuring device for model testing |
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