Roots blower alarm system and method

Abstract

The invention discloses a Roots blower alarm system and method, and the system comprises a pressure measurement device, an alarm device, and a control host. The pressure measuring device is used for measuring pressure information of the Roots blower and sending the pressure information to the control host; the alarm device is used for giving an alarm when the pressure information is abnormal; the control host is used for receiving the pressure information, judging whether the pressure information is abnormal or not and controlling the alarm device to give an alarm when the pressure information is abnormal. According to the embodiment of the invention, the alarm device gives an alarm when the pressure in the Roots blower is abnormal, so that a worker can be timely notified that the Roots blower breaks down, and the Roots blower can be timely maintained, so that the aluminum electrolysis feeding system quickly recovers production, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of Roots blowers, and particularly to a Roots blower alarm system and method. Background Art

[0002] In the prior art, the normal operation of the Roots blower in the aluminum electrolysis feeding system plays an important role in the feeding system and the electrolytic cell. If the Roots blower fails during operation, such as overloading, air inlet blockage, or abnormal blower speed, etc., it will cause the internal pressure of the Roots blower to be too high or too low, that is, the internal pressure of the Roots blower is abnormal.

[0003] However, currently, when the internal pressure of the Roots blower is abnormal, it is unable to promptly alarm and notify the staff, often resulting in more serious failures of the Roots blower, thereby causing the aluminum electrolysis feeding system to be unable to quickly resume production, and further leading to a reduction in the production efficiency of the aluminum electrolysis feeding system. Summary of the Invention

[0004] Embodiments of the present invention provide a Roots blower alarm system and method, aiming to solve the problem that when the internal pressure of the existing Roots blower is abnormal, it is unable to promptly alarm and notify the staff.

[0005] To solve the above technical problems, in a first aspect, embodiments of the present invention provide a Roots blower alarm system, including: a pressure measuring device, an alarm device, and a control host; the pressure measuring device is used to measure the pressure information of the Roots blower and send the pressure information to the control host; the alarm device is used to give an alarm when the pressure information is abnormal; the control host is used to receive the pressure information, used to judge whether the pressure information is abnormal, and used to control the alarm device to give an alarm when the pressure information is abnormal.

[0006] Further, the control host includes a comparison unit and a first judgment unit. The comparison unit is used to compare the pressure information with a first preset pressure and a second preset pressure respectively; the first judgment unit is used to judge that the pressure information is abnormal when the pressure information is higher than the first preset pressure for a first preset duration or the pressure information is lower than the second preset pressure for a second preset duration; wherein, the first preset pressure is higher than the second preset pressure.

[0007] Further, the control host includes a slope calculation unit and a second judgment unit. The slope calculation unit is used to calculate the slope information between the pressure information at the current time and the pressure information before a predetermined time interval; the second judgment unit is used to judge that the pressure information is abnormal when the slope information is greater than the first slope threshold or the slope information is less than the second slope threshold; wherein, the first slope threshold is greater than the second slope threshold.

[0008] Further, the Roots blower includes an air inlet and an air outlet, and the pressure measuring device includes: a first pressure sensor and a second pressure sensor. The first pressure sensor is used to measure the pressure information of the air inlet, and the second pressure sensor is used to measure the pressure information of the air outlet.

[0009] Further, the alarm device includes a first audible and visual alarm and a second audible and visual alarm. The first audible and visual alarm is used to give an audible and visual alarm when the pressure information is higher than the first preset pressure for the first preset duration; the second audible and visual alarm is used to give an audible and visual alarm when the pressure information is lower than the second preset pressure for the second preset duration.

[0010] Further, the alarm device includes a third audible and visual alarm and a fourth audible and visual alarm. The third audible and visual alarm is used to give an audible and visual alarm when the slope information is greater than the first slope threshold; the fourth audible and visual alarm is used to give an audible and visual alarm when the slope information is less than the second slope threshold.

[0011] Further, the alarm device includes a fifth audible and visual alarm and a sixth audible and visual alarm. The fifth audible and visual alarm is used to give an audible and visual alarm when the pressure information of the air inlet is abnormal; the sixth audible and visual alarm is used to give an audible and visual alarm when the pressure information of the air outlet is abnormal.

[0012] In a second aspect, an embodiment of the present invention further provides a Roots blower alarm method, including:

[0013] Measuring the pressure information of the Roots blower by a pressure sensor and sending the pressure information to a control host;

[0014] Judging by the control host whether the pressure information is abnormal;

[0015] When the pressure information is abnormal, controlling the alarm device to give an alarm by the control host.

[0016] Further, the judging by the control host whether the pressure information is abnormal includes:

[0017] Comparing the pressure information with a first preset pressure and a second preset pressure respectively by a comparison unit;

[0018] Judging that the pressure information is abnormal by a first judgment unit when the pressure information is higher than the first preset pressure for the first preset duration or the pressure information is lower than the second preset pressure for the second preset duration.

[0019] Further, the judging by the control host whether the pressure information is abnormal includes:

[0020] The slope information between the pressure information at the current time and the pressure information before a predetermined time interval is calculated by a slope calculation unit;

[0021] When the slope information is greater than a first slope threshold or the slope information is less than a second slope threshold, the second determination unit determines that the pressure information is abnormal.

[0022] Based on a Roots blower alarm system and method according to an embodiment of the present invention, when the pressure inside the Roots blower is abnormal, an alarm is issued through an alarm device, which can timely notify the staff that the Roots blower has a fault, so that the Roots blower can be repaired in time, thereby enabling the aluminum electrolysis feeding system to quickly resume production and improving production efficiency. Brief Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic block diagram of a Roots blower alarm system provided by an embodiment of the present invention;

[0025] Figure 2 It is a schematic flowchart of a Roots blower alarm method provided by an embodiment of the present invention;

[0026] Figure 3 It is a schematic sub - flowchart of a Roots blower alarm method provided by an embodiment of the present invention;

[0027] Figure 4 It is another schematic sub - flowchart of a Roots blower alarm method provided by an embodiment of the present invention.

[0028] Description of the Reference Numerals:

[0029] 10, pressure measuring device;

[0030] 20, alarm device;

[0031] 30, control host;

[0032] 40, Roots blower. Detailed Embodiments

[0033] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] Due to the technical problem in the prior art that when the internal pressure of a Roots blower is abnormal, it is impossible to promptly give an alarm to notify the staff.

[0035] Please refer to Figure 1 , to solve the above technical problem, the present invention proposes a Roots blower alarm system, including: a pressure measuring device 10, an alarm device 20 and a control host 30; the pressure measuring device 10 is used to measure the pressure information inside the Roots blower 40 and send the pressure information to the control host 30; the alarm device 20 is used to give an alarm when the pressure information is abnormal; the control host 30 is used to receive the pressure information, judge whether the pressure information is abnormal, and control the alarm device 20 to give an alarm when the pressure information is abnormal.

[0036] In an embodiment of the present invention, when the Roots blower 40 fails during operation, such as overloading, air inlet blockage or abnormal blower speed, etc., it will cause the internal pressure of the Roots blower to be too high or too low. When the pressure inside the Roots blower 40 is abnormal, an alarm is given through the alarm device 20, which can promptly notify the staff that the Roots blower 40 has failed, so that the Roots blower 40 can be repaired in time, thereby enabling the aluminum electrolysis feeding system to quickly resume production and improving production efficiency.

[0037] In some embodiments, the control host 30 includes a comparison unit and a first judgment unit. The comparison unit is used to compare the pressure information with a first preset pressure and a second preset pressure respectively; the first judgment unit is used to determine that the pressure information is abnormal when the pressure information is higher than the first preset pressure for a first preset duration or the pressure information is lower than the second preset pressure for a second preset duration; wherein, the first preset pressure is higher than the second preset pressure.

[0038] In this embodiment, when there is an abnormal pressure inside the Roots blower 40, for example, if the Roots blower 40 is overloaded or the air outlet is blocked, it will cause the pressure inside the Roots blower 40 to be too high. If the Roots blower 40 leaks or the air inlet is blocked, it will cause the pressure of the Roots blower 40 to be too low. The comparison unit compares the pressure information with the first preset pressure and the second preset pressure respectively, and the first judgment unit judges the comparison result, so as to quickly judge whether there is an abnormality inside the Roots blower 40. Among them, the first preset pressure and the second preset pressure can be empirical values obtained through multiple tests. The first preset duration and the second preset duration are to prevent misjudging that the Roots blower fails when the pressure value of the Roots blower suddenly increases and exceeds the first preset pressure or decreases and is lower than the second preset pressure and then returns to normal in a certain moment. The first preset duration and the second preset duration can be empirical values obtained through multiple tests.

[0039] Specifically, the alarm device 20 includes a first audible and visual alarm and a second audible and visual alarm. The first audible and visual alarm is used to give an audible and visual alarm when the pressure information is higher than the first preset pressure and lasts for the first preset duration; the second audible and visual alarm is used to give an audible and visual alarm when the pressure information is lower than the second preset pressure and lasts for the first preset duration.

[0040] In this embodiment, the first audible and visual alarm and the second audible and visual alarm give audible and visual alarms respectively when the pressure inside the Roots blower 40 is too high for a period of time and too low for a period of time, which helps the staff to initially judge the cause of the failure of the Roots blower 40 according to high pressure or low pressure, and is convenient for subsequent repair of the Roots blower 40.

[0041] In some embodiments, the control host 30 includes a slope calculation unit and a second judgment unit. The slope calculation unit is used to calculate the slope information between the pressure information at the current time and the pressure information before a predetermined time interval; the second judgment unit is used to determine that the pressure information is abnormal when the slope information is greater than the first slope threshold or the slope information is less than the second slope threshold; among them, the first slope threshold is greater than the second slope threshold.

[0042] In this embodiment, the slope calculation unit is used to calculate the slope information between the pressure information at the current time and the pressure information before a predetermined time interval. Taking time as the X-axis and pressure information as the Y-axis, a coordinate system of pressure information and time is established. For example, the coordinate of the pressure information at the current time is (x 1 ,y 1 ), and the coordinate of the pressure information before a predetermined time interval is (x 2 ,y 2 ). The slope information between the pressure information at the current time and the pressure information before a predetermined time interval is (y 1 -y 2 ) / (x 1-x 2 ) where the first slope threshold is a positive number and the second slope threshold is a negative number. When the slope information is greater than the first slope threshold, it means that the increase in the internal pressure of the Roots blower 40 within a predetermined time interval exceeds the normal increase. When the slope information is less than the second slope threshold, it means that the decrease in the internal pressure of the Roots blower 40 within a predetermined time interval exceeds the normal decrease. Both reflect that there is an abnormality in the internal pressure of the Roots blower 40. For example, if the predetermined time interval is 5 seconds, then the pressure information at the current time is compared with the pressure information 5 seconds ago.

[0043] Specifically, the alarm device 20 includes a third audible and visual alarm and a fourth audible and visual alarm. The third audible and visual alarm is used to give an audible and visual alarm when the slope information is greater than the first slope threshold; the fourth audible and visual alarm is used to give an audible and visual alarm when the slope information is less than the second slope threshold.

[0044] In this embodiment, the third audible and visual alarm and the fourth audible and visual alarm give audible and visual alarms respectively when the slope information is greater than the first slope threshold and when the slope information is less than the second slope threshold, which helps the staff to preliminarily judge the cause of the failure of the Roots blower 40 according to high pressure or low pressure, and facilitates the subsequent repair of the Roots blower 40.

[0045] In some embodiments, the Roots blower 40 includes an air inlet and an air outlet. The pressure measuring device 10 includes: a first pressure sensor and a second pressure sensor. The first pressure sensor is used to measure the pressure information of the air inlet, and the second pressure sensor is used to measure the pressure information of the air outlet.

[0046] In this embodiment, the first pressure sensor and the second pressure sensor are respectively used to measure the pressure information of the air inlet and the air outlet, which is convenient for preliminarily judging whether the failure of the Roots blower 40 occurs at the air inlet or the air outlet, so as to quickly complete the repair work of the Roots blower 40.

[0047] Specifically, the alarm device 20 includes a fifth audible and visual alarm and a sixth audible and visual alarm. The fifth audible and visual alarm is used to give an audible and visual alarm when the pressure information of the air inlet is abnormal; the sixth audible and visual alarm is used to give an audible and visual alarm when the pressure information of the air outlet is abnormal.

[0048] In this embodiment, the fifth audible and visual alarm and the sixth audible and visual alarm give audible and visual alarms respectively when the pressure information of the air inlet is abnormal and when the pressure information of the air outlet is abnormal, which helps the staff to preliminarily judge the cause of the failure of the Roots blower 40 according to the air inlet or the air outlet, and facilitates the subsequent repair of the Roots blower 40.

[0049] In some embodiments, the Roots blower alarm system further includes: a remote monitor, which is used to remotely monitor the alarm device 20, enabling the monitoring of the Roots blower 40 without the need for staff to be near the Roots blower 40, improving the automation level of the Roots blower 40 and facilitating the protection of the safety of equipment and personnel when the Roots blower 40 malfunctions.

[0050] In some embodiments, the Roots blower alarm system further includes: a data recorder, which is used to record the pressure information when the alarm device 20 issues an alarm, helping the staff to master the pressure range when the Roots blower 40 malfunctions and facilitating summarizing experience to adjust the more accurate first preset pressure and second preset pressure.

[0051] In some embodiments, the Roots blower alarm system further includes: an emergency stop device, which is used to shut down the Roots blower 40 when the alarm device 20 issues an alarm, helping to prevent further damage to the Roots blower 40 and protecting the safety of the Roots blower 40.

[0052] Please refer to Figure 2 , the embodiment of the present invention also provides a Roots blower alarm method, including steps S100 to S300:

[0053] S100. Measure the pressure information of the Roots blower 40 through a pressure sensor and send the pressure information to the control host 30;

[0054] S200. Determine whether the pressure information is abnormal through the control host 30;

[0055] S300. When the pressure information is abnormal, control the alarm device 20 to issue an alarm through the control host 30.

[0056] In the embodiment of the present invention, when the pressure inside the Roots blower 40 is abnormal, an alarm is issued through the alarm device 20, which can timely notify the staff that the Roots blower 40 has malfunctioned, enabling the Roots blower 40 to be repaired in time, so that the aluminum electrolysis feeding system can quickly resume production and improve production efficiency.

[0057] Please refer to Figure 3 , in some embodiments, determining whether the pressure information is abnormal through the control host 30 includes steps S201 to S202:

[0058] S201. Compare the pressure information with the first preset pressure and the second preset pressure respectively through a comparison unit;

[0059] S202. Determine that the pressure information is abnormal through the first judgment unit when the pressure information is higher than the first preset pressure for a first preset duration or the pressure information is lower than the second preset pressure for a second preset duration.

[0060] In this embodiment, the pressure information is compared with the first preset pressure and the second preset pressure respectively by the comparison unit, and the comparison result is judged by the first judgment unit, so that it can be quickly judged whether there is an abnormality inside the Roots blower 40, and then an alarm is given in time through the alarm device 20.

[0061] Please refer to Figure 4 , in some embodiments, judging whether the pressure information is abnormal by the control host 30 includes steps S203 to S204:

[0062] S203. Calculate the slope information between the pressure information at the current time and the pressure information before a predetermined time interval by the slope calculation unit;

[0063] S204. Determine that the pressure information is abnormal when the slope information is greater than the first slope threshold or the slope information is less than the second slope threshold by the second judgment unit.

[0064] In this embodiment, when the slope information is greater than the first slope threshold, it means that the rising amplitude of the internal pressure of the Roots blower 40 exceeds the normal rising amplitude within a predetermined time interval. When the slope information is less than the second slope threshold, it means that the falling amplitude of the internal pressure of the Roots blower 40 exceeds the normal falling amplitude within a predetermined time interval. Both reflect that there is an abnormality in the internal pressure of the Roots blower 40, and then an alarm is given in time through the alarm device 20.

[0065] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0066] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A Roots blower alarm system, characterized in that: include: Pressure measuring device, alarm device and control host; The pressure measuring device is used to measure the pressure information of the Roots blower and send the pressure information to the control host; The alarm device is used to issue an alarm when there is an abnormality in the pressure information; The control host is used to receive the pressure information, to determine whether the pressure information is abnormal, and to control the alarm device to issue an alarm when the pressure information is abnormal.

2. The Roots blower alarm system according to claim 1, characterized in that: The control host includes a comparison unit and a first judgment unit. The comparison unit is used to compare the pressure information with the first preset pressure and the second preset pressure respectively; The first judgment unit is used to determine that the pressure information is abnormal when the pressure information is higher than the first preset pressure for a first predetermined time or the pressure information is lower than the second preset pressure for a second predetermined time; Wherein, the first preset pressure is higher than the second preset pressure.

3. The Roots blower alarm system according to claim 1, characterized in that: The control host includes a slope calculation unit and a second judgment unit, The slope calculation unit is used to calculate the slope information between the pressure information at the current time and the pressure information before the predetermined time interval; The second judgment unit is used for judging that the pressure information is abnormal when the slope information is greater than a first slope threshold or the slope information is less than a second slope threshold; The first slope threshold is greater than the second slope threshold.

4. The Roots blower alarm system according to claim 1, wherein the Roots blower comprises an air inlet and an air outlet, and is characterized in that: The pressure measuring device comprises: A first pressure sensor and a second pressure sensor, wherein the first pressure sensor is used to measure pressure information of the air inlet, and the second pressure sensor is used to measure pressure information of the air outlet.

5. The Roots blower alarm system according to claim 2, characterized in that: The alarm device comprises a first sound and light alarm and a second sound and light alarm. The first sound and light alarm is used to send out a sound and light alarm when the pressure information is higher than the first preset pressure for the first predetermined time period; The second sound and light alarm is used to issue a sound and light alarm when the pressure information is lower than the second preset pressure for the first predetermined time period.

6. The Roots blower alarm system according to claim 3, characterized in that: The alarm device includes a third sound and light alarm and a fourth sound and light alarm, The third sound and light alarm is used to issue a sound and light alarm when the slope information is greater than the first slope threshold; The fourth sound and light alarm is used to issue a sound and light alarm when the slope information is less than the second slope threshold.

7. The Roots blower alarm system according to claim 4, characterized in that: The alarm device includes a fifth sound and light alarm and a sixth sound and light alarm, The fifth sound and light alarm is used to send out a sound and light alarm when there is an abnormality in the pressure information of the air inlet; The sixth sound and light alarm is used to send out a sound and light alarm when there is an abnormality in the pressure information of the air outlet.

8. A Roots blower alarm method, characterized in that: include: The pressure sensor measures the pressure information of the Roots blower and sends the pressure information to the control host; Determining whether the pressure information is abnormal by the control host; When there is an abnormality in the pressure information, the control host controls the alarm device to sound an alarm.

9. The Roots blower alarm method according to claim 8, characterized in that: The determining, by the control host, whether the pressure information is abnormal includes: Comparing the pressure information with the first preset pressure and the second preset pressure respectively by a comparison unit; The pressure information is determined to be abnormal by the first judgment unit when the pressure information is higher than the first preset pressure for a first predetermined time or the pressure information is lower than the second preset pressure for a second predetermined time.

10. The Roots blower alarm method according to claim 8, characterized in that: The determining, by the control host, whether the pressure information is abnormal includes: Calculate the slope information between the pressure information at the current time and the pressure information before the predetermined time interval by the slope calculation unit; The pressure information is determined to be abnormal by the second judgment unit when the slope information is greater than a first slope threshold or the slope information is less than a second slope threshold.

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