CN211784130U - Air pressure monitoring system - Google Patents

Abstract

The utility model discloses an air pressure monitoring system, including setting up the first atmospheric pressure detection device in the gas supply line in the workshop, controlling means and alarm device, first atmospheric pressure detection device is used for detecting the atmospheric pressure in the gas supply line in the workshop in order to obtain workshop pipeline atmospheric pressure value, first atmospheric pressure detection device sends workshop pipeline atmospheric pressure value to controlling means, controlling means generates alarm signal when workshop pipeline atmospheric pressure value is less than predetermineeing the lower limit value or is higher than predetermineeing the upper limit value, and report to the police according to alarm signal control alarm device, can realize that workshop pipeline atmospheric pressure value is less than predetermineeing the standard or is higher than predetermineeing the standard and carry out exception handling fast, the mode of having avoided looking over workshop pipeline atmospheric pressure value through the manual work causes the problem that atmospheric pressure delays the notice easily.

Description

Air pressure monitoring system

Technical Field

The utility model relates to an air pressure monitoring technical field especially relates to a can be according to workshop pipeline atmospheric pressure value automatic alarm's atmospheric pressure monitored control system.

Background

Some manufacturing and coating production lines need to supply air and the air supply pressure can only be normally operated when being maintained within a certain air pressure range, and in order to ensure the normal operation of the equipment to ensure the production quality of the production line, the air pressure in an air supply pipeline of a workshop needs to be monitored.

At present, the pressure value of an air supply pipeline in a workshop is checked by a worker at a set time, and an alarm device is started to give an alarm when the pressure value exceeds a standard; moreover, when the air pressure of the air supply pipeline in the workshop is abnormal, whether the air supply pipeline on the floor has an air leakage point is judged according to whether the air supply pipeline on the floor has air leakage sound or not by a worker from each floor after air supply is stopped, and the problems of high labor consumption, easiness in omission, easiness in delay in a manual notification mode when the air pressure is abnormal and the like exist; in addition, the method cannot track and manage the pressure information of the gas supply pipeline in the workshop and the pressure information of the gas supply pipeline between the corridors, cannot inquire the historical record of the pressure information in the later period, and cannot maintain and manage the gas supply pipeline according to the historical record of the pressure information.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a atmospheric pressure monitored control system that can be in the air supply line in the workshop when atmospheric pressure value is not in predetermined standard range automatic start was reported to police.

In order to realize the above-mentioned purpose, the utility model discloses an air pressure monitoring system, including setting up the first atmospheric pressure detection device in the gas supply line in the workshop, with first atmospheric pressure detection device communication connection's controlling means and with controlling means communication connection's alarm device, first atmospheric pressure detection device is used for detecting the atmospheric pressure in the gas supply line in the workshop in order to obtain workshop pipeline atmospheric pressure value, first atmospheric pressure detection device sends workshop pipeline atmospheric pressure value to controlling means, controlling means generates alarm signal when workshop pipeline atmospheric pressure value is less than predetermineeing the lower limit value or is higher than predetermineeing the upper limit value, and report to the police according to alarm signal control alarm device.

The utility model discloses an atmospheric pressure in the gas supply line in the first air pressure detection device detection workshop obtains workshop pipeline atmospheric pressure value, controlling means generates alarm signal when workshop pipeline atmospheric pressure value is less than predetermineeing the lower limit value or is higher than predetermineeing the upper limit value, so that alarm device reports to the police and notifies the staff in the workshop, thereby be less than predetermined standard or be higher than predetermineeing the standard and carry out exception handling fast at workshop pipeline atmospheric pressure value, the problem of causing atmospheric pressure report to delay easily through the artifical mode of looking over workshop pipeline atmospheric pressure value has been avoided.

Preferably, the air pressure monitoring system further comprises a second air pressure detecting device arranged in the air supply pipeline of each floor, and the second air pressure detecting device is used for detecting the air pressure in the air supply pipeline of each floor to obtain the air pressure value of the floor pipeline. Borrow this, can judge the floor that probably has the gas leakage point to inform the staff to inspect and maintain to the floor of probably leaking gas, avoided the mode that traditional technique relies on the manual work to listen pipeline sound to look for the gas leakage floor to miss easily appearing and consume the big problem of manpower.

More preferably, the control device calculates a time period that elapses when the floor pipe air pressure value falls to a preset air pressure value to obtain the pressure maintaining time period.

Preferably, the control device determines a floor whose pressure maintaining time period is less than a preset time period as a floor with a possibility of air leakage.

Preferably, the control device further compares the pressure maintaining time lengths of the floors, and determines that the floor is the floor with the possibility of air leakage when the pressure maintaining time length corresponding to one floor is lower than the preset difference value of the pressure maintaining time lengths of other floors.

Preferably, the air pressure monitoring system further comprises a main valve installed on the air supply pipeline, the main valve controls the on-off of air in the air supply pipeline, and the control device calculates the time length of the floor pipeline when the air pressure value is reduced to the preset air pressure value when the main valve is closed so as to obtain the pressure maintaining time length.

Preferably, the control device is further in communication connection with an external terminal, and the control device sends warning information to the external terminal every preset time when the pressure value of the workshop pipeline is continuously higher than a preset upper limit value or continuously lower than a preset lower limit value.

Preferably, the control device further transmits the workshop duct air pressure value and the floor duct air pressure value to the database to store the workshop duct air pressure value and the floor duct air pressure value.

Preferably, the database comprises a statistical module, the statistical module obtains the air pressure stability according to the difference of the air pressure values of the workshop pipeline received at the previous and subsequent moments in each time period, and generates a curve graph of the air pressure values of the workshop pipeline according to the difference.

Preferably, the first air pressure detection device is also electrically connected to a first air pressure display screen arranged outside an air supply pipeline in the workshop, and the first air pressure display screen displays the air pressure value of the workshop pipeline; the second air pressure detection device is also electrically connected to a second air pressure display screen arranged outside the air supply pipeline of the floor, and the second air pressure display screen displays the air pressure value of the floor pipeline.

Drawings

Fig. 1 is a block diagram of an embodiment of the present invention.

Fig. 2 is a block diagram of a pneumatic monitoring system according to another embodiment of the present invention.

Fig. 3 is a block diagram of a control device according to an embodiment of the present invention.

Fig. 4 is a block diagram of a control device according to another embodiment of the present invention.

Fig. 5 is a block diagram of a control device according to still another embodiment of the present invention.

Fig. 6 is a block diagram of a control device according to still another embodiment of the present invention.

Detailed Description

In order to explain technical contents, structural features, and effects achieved by the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

Referring to fig. 1, the utility model discloses an air pressure monitoring system 100 for air pressure in the air supply line in the control workshop when normal air feed and air pressure in the air supply line of each floor of control after stopping the air feed to start the warning when air pressure in the air supply line is not in predetermined standard range in order to remind workshop staff, and learn the floor that probably has the gas leakage point according to the air pressure in the air supply line of each floor, carry out the air supply line to this floor and overhaul with the notice staff. Specifically, the utility model discloses an air pressure monitoring system 100 is including setting up the first atmospheric pressure detection device 1 in the gas supply line in the workshop, set up the second atmospheric pressure detection device 2 in the gas supply line of each floor, with the control device 3 of first atmospheric pressure detection device 1 and second atmospheric pressure detection device 2 communication connection and the alarm device 4 of control device 3 communication connection, the atmospheric pressure in the gas supply line in the workshop is detected in first atmospheric pressure detection device 1 when normal air feed in order to obtain workshop pipeline atmospheric pressure value, first atmospheric pressure detection device 1 sends workshop pipeline atmospheric pressure value to control device 3, control device 3 generates low pressure alarm signal when workshop pipeline atmospheric pressure value is less than preset lower limit value and makes alarm device 4 report to the police, thereby make the staff in the workshop learn that current atmospheric pressure is less than standard atmospheric pressure; the second air pressure detection device 2 detects air pressure in the air supply pipeline of the floor after air supply is stopped to obtain a floor pipeline air pressure value, the second air pressure detection device 2 sends the floor pipeline air pressure value to the control device 3, and the control device 3 calculates the time length of the floor pipeline air pressure value when the floor pipeline air pressure value is reduced to a preset air pressure value (such as atmospheric pressure) to obtain the pressure maintaining time length, so that the floor with the air leakage point can be judged according to the pressure maintaining time length.

The preset lower limit value is a value set according to an air pressure value range in which equipment in a workshop can normally work in actual production, and when the air pressure value is lower than the preset lower limit value, the equipment can not normally work; the control device 3 may be any device capable of implementing data processing, such as a PC or the like. The first air pressure detection device 1 and the second air pressure detection device 2 can be in communication connection with the control device 3 in a wired or wireless mode so as to send the air pressure value of the workshop pipeline and the air pressure value of the floor pipeline to the control device 3. When the first air pressure detection device 1 is a plurality of air pressure meters, the air pressure value of the workshop pipeline can be obtained by averaging the air pressures measured by the air pressure meters; similarly, the second air pressure detecting device 2 may be a plurality of air pressure gauges, or may be one air pressure gauge, and when the second air pressure detecting device 2 is a plurality of air pressure gauges, the floor pipe air pressure value may be obtained by averaging the air pressures measured by the air pressure gauges.

The following describes the air pressure monitoring system 100 in detail with reference to fig. 1 to 6.

Referring to fig. 1, in an embodiment, the control device 3 generates a high-pressure alarm signal when the pressure value of the pipeline in the workshop is higher than a preset upper limit value, and controls the alarm device 4 to alarm according to the high-pressure alarm signal, so that the staff in the workshop can know that the current pressure is higher than the standard pressure to perform pressure anomaly processing. The preset upper limit value is a value set according to an air pressure value range in which equipment in a workshop can normally work in actual production, and when the air pressure value is higher than the preset upper limit value, the equipment can not normally work.

Of course, in some embodiments, the control device 3 may be configured to generate a high-pressure alarm signal when the pressure value of the workshop pipeline is higher than a preset upper limit value, generate a low-pressure alarm signal when the pressure value of the workshop pipeline is lower than a preset lower limit value, and control the alarm device 4 to alarm according to the low-pressure alarm signal or the high-pressure alarm signal, so that the staff in the workshop can obtain the alarm signal when the current pressure is higher than the standard pressure or lower than the standard pressure.

Referring to fig. 2, in an embodiment, the air pressure monitoring system 100 further includes a main valve 7 installed on the air supply pipeline, the main valve 7 controls the on/off of the air in the air supply pipeline, when the main valve 7 is opened, the air supply system supplies air normally, and the first air pressure detecting device 1 starts to detect the air pressure in the air supply pipeline in the workshop; when the main valve 7 is closed, the air supply system stops supplying air, the second air pressure detection device 2 starts to detect the air pressure in the air supply pipeline of each floor, and the control device 3 calculates the time length of the air pressure value of the floor pipeline when the air pressure value is reduced to the preset air pressure value when the main valve 7 is closed so as to obtain the pressure maintaining time length. In this embodiment, the second air pressure detecting device 2 is controlled to detect the air pressure value of the air supply pipeline of the floor according to the opening and closing of the main valve 7, when the control device 3 receives the air pressure value of the floor pipeline sent by the second air pressure detecting device 2, the control device 3 starts timing, and when the air pressure value of the floor pipeline is reduced to a preset air pressure value, the control device 3 stops timing to obtain the pressure maintaining time. As shown in fig. 3, the control device 3 includes a comparing unit 31 and a timing unit 32, the floor pipe pressure value or the closing signal of the main valve 7 is inputted to the timing unit 32 and the enabling terminal of the comparing unit 31, and the output terminal of the comparing unit 31 is connected to the stop control terminal of the timing unit 32.

Additionally, the control device 3 can be used to control the main valve 7, the first air pressure detection device 1 and the second air pressure detection device 2, when air supply is needed, the control device 3 controls the main valve 7 to open, and controls the first air pressure detection device 1 to start detection; when air supply is not needed, the control device 3 controls the main valve 7 to be closed, and simultaneously starts timing and controls the second air pressure detection device 2 to start detection.

Referring to fig. 4, in an embodiment, the control device 3 is integrated with a first comparator 33, a second comparator 34 and an or gate 35, the first air pressure detecting device 1 is connected to the inverting input terminal of the first comparator 33 and the non-inverting input terminal of the second comparator 34, the non-inverting input terminal of the first comparator 33 is connected to a voltage signal V1 (a preset lower limit), the inverting input terminal of the second comparator 34 is connected to a voltage signal V2 (a preset upper limit), the output terminals of the first comparator 33 and the second comparator 34 are connected to the or gate 35, or the output terminal of the or gate 35 is connected to the alarm device 4. The first air pressure detection device 1 outputs the workshop pipeline air pressure value to the first comparator 33 and the second comparator 34, the first comparator 33 compares the workshop pipeline air pressure value with a preset lower limit value, and outputs a comparison result (high level or low level) to the OR gate circuit 35; the second comparator 34 compares the pressure value of the plant duct with a preset upper limit value, and outputs a comparison result (high level or low level) to the or gate circuit 35, and when any comparison result input to the or gate circuit 35 is high level, the or gate circuit 35 outputs an alarm signal to the alarm device 4 to control the alarm device 4 to perform an alarm operation. In this embodiment, the alarm device 4 is triggered at a high level, and in other embodiments, it may be triggered at a low level, and then the first air pressure detecting device 1 is connected to the positive input terminal of the first comparator 33 and the negative input terminal of the second comparator 34, a preset lower limit value is input to the negative input terminal of the first comparator 33, and a preset upper limit value is input to the positive input terminal of the second comparator 32. Of course, in some embodiments, the output ends of the first comparator 33 and the second comparator 34 may be directly connected to the alarm device 4 without using the or gate 35, when the alarm device 4 is triggered at a high level, the alarm device 4 alarms as long as any one of the first comparator 33 and the second comparator 34 outputs a high level, and when the alarm device 4 is triggered at a low level, the alarm device 4 alarms as long as any one of the first comparator 33 and the second comparator 34 outputs a low level.

Referring to fig. 2, in one embodiment, the alarm device 4 includes an alarm lamp 41 installed in the workshop, and the alarm lamp 41 switches the color of the light when receiving an alarm signal. When the air pressure in the air supply pipeline in the workshop is abnormal, reminding workers of the abnormal air pressure in the workshop through the color of the light; for example, the warning lamp 41 is turned on green when the air pressure is normal, and the warning lamp 41 is turned on red when the air pressure is abnormal. Further, in some embodiments, the alarm device 4 further includes a buzzer 42 installed in the workshop, the buzzer 42 sounds when receiving the alarm signal, and the buzzer 42 cooperates with the alarm lamp 41 to remind the workshop staff of the abnormal air pressure.

As shown in fig. 5, in this embodiment, the control device 3 is integrated with a first comparator 33 ' and a second comparator 34 ', the first air pressure detecting device 1 is connected to the inverting input terminal of the first comparator 33 ' and the non-inverting input terminal of the second comparator 34 ', the non-inverting input terminal of the first comparator 33 ' is connected to a voltage signal V1 (a preset lower limit value), the output terminal of the first comparator 33 ' is connected to the alarm lamp 41, and the alarm lamp 41 is triggered to alarm when the output terminal of the first comparator 33 ' is at a high level. The inverting input end of the second comparator 34 ' is connected with the voltage signal V2 (preset upper limit value), the output end of the second comparator 34 ' is connected with the buzzer 42, and the buzzer 42 is triggered to alarm when the output end of the second comparator 34 ' is at high level.

In one embodiment, the control device 3 determines a floor whose pressure holding time period is less than a preset time period as a floor that is likely to leak air. In this embodiment, the actual pressure maintaining time of the air supply pipeline of a floor after stopping air supply is compared with the preset pressure maintaining time, when the actual pressure maintaining time of a certain floor is lower than the preset pressure maintaining time, it indicates that there is a possible air leakage point on the floor, and the control device 3 determines the floor as a possibly air leakage floor to notify a worker to go to the floor to perform air supply pipeline inspection and maintenance. The preset time period is a time period value set according to the air pressure value in the air supply pipeline when the air supply is stopped, for example, twenty minutes, twenty-five minutes and the like.

Referring to fig. 6, the control device 3 is integrated with a third comparator 36, a timer 37 and a fourth comparator 38, wherein an enable terminal of the timer 37 is connected to the main valve 7, and when the main valve 7 is closed (low level), the timer 37 is triggered to start timing. The non-inverting input end of the third comparator 36 inputs the voltage signal V3 (preset air pressure value), the inverting input end of the third comparator 36 is connected with the second air pressure detecting device 2, the output end of the third comparator 36 is connected with the timer 37, the third comparator 36 compares the floor pipe air pressure value with the atmospheric pressure value and outputs a comparison result (high level or low level) to the stop control end of the timer 37, and when the comparison result is high level, the timer 37 is triggered to stop timing, so that the pressure maintaining time length is obtained. Further, the output end of the timer 37 is connected to the positive phase input end of the fourth comparator 38, the negative phase input end of the fourth comparator 38 inputs the voltage signal V4 (preset duration), the fourth comparator 38 compares the pressure maintaining duration with the preset duration, and when the pressure maintaining duration is less than the preset duration, it is determined that the floor is the floor with the possibility of air leakage. The output end of the fourth comparator 38 is also connected with a display 39, and information of the possible air leakage floor is displayed through the display 39. In this embodiment, the timer 37 is also connected to a display 39, and the dwell time period is displayed by the display 39.

In another embodiment, the control device 3 further compares the pressure maintaining time lengths of a plurality of floors, and determines that a floor is a floor with a possibility of air leakage when the pressure maintaining time length corresponding to a floor is lower than the preset difference value of the pressure maintaining time lengths of other floors. In this embodiment, the pressure maintaining time lengths of the air supply pipelines of the floors after the air supply is stopped are compared, and when the pressure maintaining time length of a certain floor is lower than the pressure maintaining time lengths of other floors by a preset difference value, it is indicated that there is a possible air leakage point on the floor, and the control device 3 determines the floor as a possible air leakage floor to notify workers to go to the floor for checking and maintaining the air supply pipelines.

Of course, the utility model discloses controlling means 3 also can be when the pressurize of obtaining each floor after long, and long judgement was crossed low excessively when externally terminal 200 shows the pressurize, and whether the staff had abnormal data (the pressurize is long according to the pressurize that shows) to the floor of probably leaking gas is seeked in artifical judgement.

During operation, when receiving low pressure alarm signal, operating personnel can be according to needs manual closing main valve 7, and second air pressure detection device 2 begins to detect the atmospheric pressure value of floor gas supply line, and controlling means 3 begins to record the length of pressurize so that look for the gas leakage point. Of course, the control device 3 may also automatically control the main valve 7 to close when obtaining the low-pressure alarm signal, so as to obtain the pressure maintaining time and determine the floor with the possibility of air leakage. In addition, when the air supply is not needed in the workshop, the air pressure value of the floor air supply pipeline can be detected through the second air pressure detection device 2 to detect whether the air leakage exists in each floor air supply pipeline.

Referring to fig. 1, in an embodiment, the control device 3 outputs an overhaul instruction according to the floor pipeline air pressure value to overhaul the air supply pipeline of the floor with the possibility of air leakage, compares the pressure maintaining time duration before overhaul with the pressure maintaining time duration after overhaul, and determines whether to output a re-overhaul instruction according to the comparison result. Specifically, when control device 3 determines that a floor is a floor with a possible air leakage, an overhaul instruction is output to inform a worker to overhaul an air supply pipeline of the floor, the duration of pressure maintaining of the air supply pipeline is detected again after overhaul is completed, control device 3 compares the duration of pressure maintaining before overhaul with the duration of pressure maintaining after overhaul of the air supply pipeline, when the duration of pressure maintaining after overhaul is not obviously improved compared with the duration of pressure maintaining before overhaul, it indicates that the air leakage point is found inaccurately, control device 3 outputs an overhaul instruction to inform the worker to overhaul again, when the duration of pressure maintaining after overhaul is obviously improved compared with the duration of pressure maintaining before overhaul, it indicates that the air leakage point is found accurately and the air supply pipeline is repaired well, and control device 3 outputs that the air supply pipeline is repaired well.

Referring to fig. 1, in an embodiment, the control device 3 is further communicatively connected to the external terminal 200, and the control device 3 generates a low voltage alarm signal and sends a low voltage alarm message to the external terminal 200, and generates a high voltage alarm signal and sends a high voltage alarm message to the external terminal 200. Through sending the warning information to external terminal 200 to make staff outside the workshop can in time learn the abnormal information of gas supply pipeline atmospheric pressure in the workshop, in order to support or arrange the workshop staff to maintain. Specifically, the external terminal 200 may be any electronic terminal with a communication function, including but not limited to a mobile phone, a tablet computer, an IPAD, and the like.

In an embodiment, the control device 3 further sends the high-voltage warning message to the external terminal 200 at intervals of a preset time when the pressure value of the workshop pipeline is continuously higher than the preset upper limit value, and sends the low-voltage warning message to the external terminal 200 at intervals of a preset time when the pressure value of the workshop pipeline is continuously lower than the preset upper limit value. In this embodiment, when the air pressure value of the workshop pipeline is continuously abnormal, the warning information is continuously sent to the external terminal 200 according to the preset time so as to remind the staff outside the workshop that the air pressure of the air supply pipeline in the workshop is continuously abnormal; meanwhile, under the condition that the staff is arranged to overhaul, the mode also enables the staff outside the workshop to know the abnormal air pressure processing condition of the air supply pipeline in the workshop. For example, when the holder of the external terminal 200 is the main pipe of the workshop, the main pipe of the workshop can timely obtain the processing condition of the air pressure abnormality of the air supply pipeline in the workshop by the method, so as to allocate the staff according to the processing condition. The preset time is a time value set according to actual needs, for example, five minutes, ten minutes, and the like.

Referring to fig. 1, in an embodiment, the control device 3 further sends the workshop air pressure value and the floor air pressure value to the database 300 to store the workshop air pressure value and the floor air pressure value. The database 300 is used for storing the air pressure value of the workshop pipeline and the air pressure value of the floor pipeline, and the air pressure value of the workshop pipeline and the air pressure value of the floor pipeline of each floor can be inquired in the later period so as to know the historical air pressure condition of the air supply pipeline of each workshop and the historical air pressure condition of the air supply pipeline of each floor.

Referring to fig. 2, in an embodiment, the database 300 further includes a statistical module 310, and the statistical module 310 obtains the air pressure stability according to the difference between the air pressure values of the workshop pipeline received at the previous and subsequent times in each time period, and generates a graph of the air pressure value of the workshop pipeline according to the difference, so that the air pressure stability of the air pressure value of the workshop pipeline is more intuitive, and a worker can conveniently check the historical air pressure condition of each air supply pipeline. In addition, the maintenance schedule of the air supply pipeline can be arranged according to the air pressure stability in each time period, for example, the maintenance frequency of the air supply pipeline with poor air pressure stability is increased, so that the performance of the air supply pipeline is guaranteed, and for the air supply pipeline with good air pressure stability, only daily maintenance is needed to be carried out regularly, so that the maintenance cost is saved.

Referring to fig. 2, in an embodiment, the first air pressure detecting device 1 is further electrically connected to a first air pressure display screen 5 disposed outside the air supply pipeline in the workshop, and the first air pressure display screen 5 displays an air pressure value of the workshop pipeline, so that a worker in the workshop can check a current air pressure condition in the air supply pipeline in the workshop in real time; the second air pressure detection device 2 is also electrically connected to a second air pressure display screen 6 arranged outside the air supply pipeline of the floor, and the second air pressure display screen 6 displays the air pressure value of the floor pipeline, so that the staff at the floor can check the current air pressure condition in the air supply pipeline of the floor in real time.

The utility model discloses a first air pressure detection device 1 detects the atmospheric pressure in the gas supply line in the workshop when the normal air feed of pipeline and obtains workshop pipeline atmospheric pressure value, controlling means 3 is less than in the workshop pipeline atmospheric pressure value and predetermines the lower limit value or be higher than and predetermine the upper limit value when generating alarm signal, so that alarm device 4 reports to the police and notifies the staff in the workshop, thereby be less than in the workshop pipeline atmospheric pressure value and predetermine the standard or be higher than and predetermine the standard and carry out exception handling fast, the mode of having avoided looking over workshop pipeline atmospheric pressure value through the manual work causes the problem that atmospheric pressure report delays easily. In addition, the air pressure in the air supply pipeline of the floor is detected to obtain the air pressure value of the floor pipeline through the second air pressure detection device 2 after the pipeline stops supplying air, the control device 4 obtains the pressure maintaining time of the air supply pipeline according to the air pressure value of the floor pipeline, so that the floor with the air leakage point is judged, the worker is informed to check and maintain the floor with the air leakage, and the problems that the leakage floor is easy to occur and the labor consumption is large due to the fact that the traditional technology depends on manual listening to pipeline sound to search the air leakage floor are solved.

Next, the operation process of the air pressure monitoring system of the present invention will be described by taking an embodiment as an example. Firstly, detecting the air pressure in an air supply pipeline in a workshop through a first air pressure detection device 1 during normal air supply to obtain a workshop pipeline air pressure value; the control device 3 receives the pressure value of the workshop pipeline in real time, generates a low-pressure alarm signal when the pressure value of the workshop pipeline is lower than a preset lower limit value or generates a high-pressure alarm signal when the pressure value of the workshop pipeline is higher than a preset upper limit value, and sends the generated alarm signal to an external terminal; the alarm device alarms according to the low-voltage alarm signal or the high-voltage alarm signal; when the alarm device sends a low-pressure alarm signal, the main valve 7 is closed to stop the air supply of the air supply system, and then the air pressure in the air supply pipeline of the floor is detected by the second air pressure detection device 2 to obtain the air pressure value of the floor pipeline; the control device 3 receives the floor pipeline air pressure value in real time and starts to calculate the time length when the floor pipeline air pressure value is reduced to the atmospheric pressure so as to obtain the pressure maintaining time length; and then, comparing the pressure maintaining time with the preset pressure maintaining time, and when the actual pressure maintaining time of a certain floor is lower than the preset pressure maintaining time, judging the floor as a floor with the possibility of air leakage and outputting a maintenance instruction to inform workers to go to the floor to carry out air supply pipeline inspection and maintenance. After the overhaul is finished, the air pressure in the air supply pipeline of the floor is detected through the second air pressure detection device 2 again, the control device 3 compares the pressure maintaining time before overhaul with the pressure maintaining time after overhaul, when the pressure maintaining time after overhaul is longer than the pressure maintaining time before overhaul and is not obviously improved, the air leakage point is found inaccurately, the output is overhaulted again, the staff is informed to overhaul again, when the pressure maintaining time after overhaul is longer than the pressure maintaining time before overhaul and is obviously improved, the air leakage point is found accurately and is maintained well.

The above disclosure is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereto, and therefore, the scope of the present invention is not limited to the above embodiments.

Claims (10)

1. The utility model provides an atmospheric pressure monitored control system, its characterized in that, including set up the first atmospheric pressure detection device in the gas supply line in the workshop, with first atmospheric pressure detection device communication connection's controlling means and with controlling means communication connection's alarm device, first atmospheric pressure detection device is used for detecting the atmospheric pressure in the gas supply line in the workshop in order to obtain workshop pipeline atmospheric pressure value, controlling means in workshop pipeline atmospheric pressure value is less than and predetermines the lower limit value or is higher than and generates alarm signal when predetermineeing the upper limit value, and the basis alarm signal control alarm device reports to the police.

2. The air pressure monitoring system according to claim 1, further comprising a second air pressure detecting device provided in the air supply duct of each floor, the second air pressure detecting device being configured to detect air pressure in the air supply duct of the floor to obtain a floor duct air pressure value.

3. The air pressure monitoring system according to claim 2, wherein the control means calculates a time period that elapses when the floor tunnel air pressure value falls to a preset air pressure value to obtain the dwell time period.

4. The air pressure monitoring system according to claim 3, wherein the control device determines a floor where the pressure holding time period is less than a preset time period as a floor with a potential for air leakage.

5. The air pressure monitoring system according to claim 3, wherein the control device further compares the pressure holding time lengths of the floors, and determines a floor as a floor with a possibility of air leakage when the pressure holding time length corresponding to a floor is lower than the pressure holding time lengths of other floors by a preset difference.

6. The air pressure monitoring system according to claim 3, further comprising a main valve installed on the air supply duct, the main valve controlling the on/off of the air in the air supply duct, and the control device calculating the time period that elapses when the floor duct air pressure value falls to the preset air pressure value when the main valve is closed, to obtain the pressure holding time period.

7. The air pressure monitoring system according to claim 1, wherein the control device is further in communication connection with an external terminal, and the control device sends a warning message to the external terminal at preset intervals when the air pressure value of the workshop pipeline is continuously higher than the preset upper limit value or continuously lower than the preset lower limit value.

8. The air pressure monitoring system of claim 2 wherein the control means further transmits the plant pipe air pressure value and the floor pipe air pressure value to a database for storing the plant pipe air pressure value and the floor pipe air pressure value.

9. The air pressure monitoring system according to claim 8, wherein the database includes a statistical module, the statistical module derives the air pressure stability from the difference between the air pressure values of the plant conduit received at the previous and subsequent times within each time period, and generates a graph of the plant conduit air pressure values from the difference.

10. The air pressure monitoring system according to claim 2, wherein the first air pressure detecting device is further electrically connected to a first air pressure display screen arranged outside an air supply pipeline in the workshop, and the first air pressure display screen displays the air pressure value of the workshop pipeline; the second air pressure detection device is also electrically connected to a second air pressure display screen arranged outside the air supply pipeline of the floor, and the second air pressure display screen displays the air pressure value of the floor pipeline.

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