A remote monitoring method for dust removal device based on explosion-proof

Abstract

The present invention relates to a remote monitoring method for a dust removal device based on explosion-proof. The dust removal device includes a dust collector, a nitrogen filling component, a pipeline flame arrester, an electromagnetic shut-off valve, an alarm, a detection component and a controller. The pipeline flame arrester and the electromagnetic shut-off valve are both installed on the air inlet pipe of the dust collector, and the electromagnetic shut-off valve is located between the pipeline flame arrester and the air inlet. The electromagnetic shut-off valve is interlocked with the fan of the dust collector. The nitrogen filling component includes a nitrogen bottle and a pulse valve. The nitrogen bottle is connected to the dust collector, and the pulse valve is installed on the pipeline between the nitrogen bottle and the dust collector. The alarm is installed on the dust collector. The monitoring component is used to measure the operating data of the dust collector in real time. The present invention monitors the operating data of the dust removal device in real time to determine whether there is an explosion risk, and then generates a corresponding alarm or control strategy according to the explosion risk level, thereby reducing the risk of smoke explosion and improving the safety of dust removal.

Description

Technical Field

[0001] The present invention relates to a dust removal device, in particular to an explosion-proof dust removal device, a remote monitoring system based on the explosion-proof dust removal device, and a remote monitoring method based on the explosion-proof dust removal device. Background Art

[0002] Dust collectors are commonly used facilities in boilers and industrial production. Dust collectors can separate dust from flue gas. The performance of dust collectors is generally measured by the amount of gas that can be processed, the resistance loss when the gas passes through the dust collector, and the dust removal efficiency. At the same time, the price of the dust collector, the cost of operation and maintenance, the length of service life, and the difficulty of operation and management are also important factors to consider its performance. Dust collectors can be mainly divided into dry mechanical dust collectors, wet dust collectors, granular layer dust collectors, bag dust collectors, electrostatic dust collectors, etc. according to their principles.

[0003] In industrial production, if there are a large number of dust collectors, it will be difficult to collect the operating data of the dust collectors and to manage them centrally. In addition, the smoke and dust processed by some dust collectors are not only of high temperature, but also contain a lot of combustible particles. When the combustibles reach a certain concentration, it may cause a smoke explosion, which is very dangerous. Although existing dust collectors also have explosion-proof functions, due to slow response speed, difficulty in real-time monitoring, lack of early warning and other problems, the explosion-proof performance of dust collectors is still insufficient. Summary of the invention

[0004] Based on this, it is necessary to provide an explosion-proof dust removal device, and a remote monitoring system and method based thereon to address the problem of poor explosion-proof performance of existing dust removal devices.

[0005] The present invention is achieved through the following technical scheme: an explosion-proof dust removal device includes a dust collector, a nitrogen filling component, a pipeline flame arrester, an electromagnetic shut-off valve, an alarm, a detection component and a controller.

[0006] The dust collector includes a housing, a fan, an air inlet pipe, an exhaust pipe and a plurality of dust bags. A separation chamber is provided in the housing, the air inlet pipe is connected to one side of the separation chamber, the exhaust pipe is connected to the other side of the separation chamber, and the fan is installed on the exhaust pipe. An array of multiple dust bags is installed in the separation chamber. The dust bags are used to separate small particles of dust in the flue gas. The duct flame arrester is installed on the air inlet pipe, which can extinguish the smoke flame passing through the air inlet pipe. The electromagnetic shut-off valve is also installed on the air inlet pipe, and the electromagnetic shut-off valve is located between the duct flame arrester and the air inlet. The electromagnetic shut-off valve is interlocked with the fan. The nitrogen filling assembly includes a nitrogen bottle and a pulse valve. The nitrogen bottle is connected to the separation chamber through a pipeline, and a pulse valve is installed on the pipeline between the nitrogen bottle and the separation chamber. The nitrogen bottle is filled with high-pressure liquid nitrogen. The alarm is installed on the dust collector. The monitoring assembly is installed on the dust collector to measure the operating data of the dust collector in real time.

[0007] The controller is electrically connected to the monitoring component, the alarm, the pulse valve, the electromagnetic shut-off valve, and the fan respectively. The controller includes an explosion risk assessment module, a warning signal generation module, and an explosion-proof signal generation module. The explosion risk assessment module is used to query and output the current explosion risk level in a pre-stored risk assessment table according to the operating data. The risk assessment table is used to characterize the mapping relationship between the operating data and the explosion risk level, and the explosion risk level includes primary and intermediate. The warning signal generation module is used to generate a warning signal when the explosion risk level reaches the primary level, and send the warning signal to the alarm. The explosion-proof signal generation module is used to generate a shut-off signal and a nitrogen filling signal when the explosion risk level reaches the intermediate level, and send the shut-off signal to the fan and the nitrogen filling signal to the pulse valve.

[0008] The above-mentioned dust removal device monitors its own operating data in real time, and then determines whether there is an abnormality based on multiple pre-stored parameter thresholds and risk assessment tables, and then generates corresponding alarms or control strategies based on the abnormal data to remind the corresponding operators or managers to perform maintenance in time. When the data is seriously abnormal, the dust removal device can also be directly controlled to stop running, and the air inlet duct can be disconnected to fill the dust removal device with nitrogen to reduce the risk of smoke explosion and improve the safety of dust removal.

[0009] In one embodiment, the monitoring component includes at least two air pressure sensors, at least two dust concentration sensors, at least two flow rate sensors, at least two temperature sensors 1 and at least one temperature sensor 2. The air pressure sensor, dust concentration sensor, flow rate sensor and temperature sensor 1 are respectively installed on the air inlet and air outlet of the dust removal device, and are used to measure the air pressure, air inlet temperature, air inlet dust concentration, air inlet flue gas flow rate, air pressure, air outlet temperature, air outlet dust concentration and air outlet flue gas flow rate. Temperature sensor 2 is installed on the fan to measure the fan temperature.

[0010] In one embodiment, the pressure relief valve is mounted on the dust collector and communicated with the separation chamber.

[0011] In one embodiment, a dust discharge cavity is provided at the bottom of the box body, and the dust discharge cavity is communicated with the separation cavity. The dust discharge cavity is a bucket-shaped cavity, and is used to discharge the dust separated from the smoke.

[0012] In one embodiment, the dust removal bag is an anti-static dust removal bag.

[0013] In one embodiment, the controller further includes an event generation module and a communication module. The event generation module is used to record the warning signal, the cut-off signal, the nitrogen filling signal and the time when each signal is generated, and then generate corresponding event data. The communication module is used to transmit the operation data and event data of the dust removal device during operation.

[0014] The present invention also provides a remote monitoring system based on an explosion-proof dust removal device, the remote monitoring system comprising at least one of the above-mentioned dust removal devices, a server and at least one mobile terminal.

[0015] The server is remotely connected to the communication module of each dust removal device and is used to receive and store the operation data and event data of the dust removal device.

[0016] The mobile terminal is remotely connected to the server. The mobile terminal is used to request the server to download the operation data and realize the remote control of the dust removal device through the server.

[0017] In one embodiment, configuration software is installed on the mobile terminal. The configuration software is used to generate statistical reports based on the downloaded operating data and send the statistical reports to the management personnel.

[0018] The present invention also provides a remote monitoring method for an explosion-proof dust removal device, the remote monitoring method comprising the following process:

[0019] S1: Each dust removal device performs autonomous monitoring and records event data and operation data during the autonomous monitoring process. The autonomous monitoring method is as follows:

[0020] S11: Collecting the operation data of the dust removal device. The operation data includes air pressure at the air inlet, air temperature at the air inlet, dust concentration at the air inlet, flue gas flow rate at the air inlet, air pressure at the air outlet, air temperature at the air outlet, dust concentration at the air outlet, flue gas flow rate at the air outlet, and fan temperature.

[0021] S12: Calculate the velocity difference between the air inlet velocity and the air outlet velocity, and determine whether the velocity difference exceeds a preset velocity difference threshold. If so, issue a leakage alarm.

[0022] S13: Calculate the pressure difference between the air inlet pressure and the air outlet pressure, determine whether the pressure difference exceeds a preset pressure threshold value 1, if yes, issue a warning, continue to determine whether the pressure difference exceeds a preset pressure threshold value 2, if yes, issue a filter bag replacement alarm. Otherwise, continue to determine whether the pressure difference exceeds a preset pressure threshold value 3, if yes, issue a dust removal alarm.

[0023] S14: Query and output the current explosion risk level in a pre-stored risk assessment table based on the air inlet temperature, air outlet temperature, air inlet dust concentration, and air outlet dust concentration. The risk assessment table is used to characterize the mapping relationship between operating data and explosion risk levels, which include primary and intermediate levels. Determine whether the explosion risk level has reached the primary level. If so, issue a warning message, and continue to determine whether the explosion risk level has reached the intermediate level. If so, control the fan of the dust removal device to shut down, disconnect the air inlet and outlet of the dust removal device, and input nitrogen into the separation chamber of the dust removal device.

[0024] S15: Determine whether the fan temperature reaches a preset temperature threshold, and if so, reduce the output power of the fan of the dust removal device or turn off the fan until the fan temperature is lower than the temperature threshold.

[0025] S2: Number each dust removal device through the server, and then store the event data and operation data of each dust removal device in different data sets, and generate corresponding reference reports according to the operation data and event data in each data set.

[0026] S3: Update the parameter thresholds and explosion risk levels of the dust removal device based on the reference report.

[0027] In one embodiment, the dust removal device interacts with the server according to a preset time period, and then transmits all operation data and event data in the previous time period to the server. The server classifies the operation data and event data by identifying the corresponding number and transmission time, and stores them in the corresponding data set.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The dust removal device of the present invention monitors its own operating data in real time, and then determines whether an abnormality occurs according to multiple pre-stored parameter thresholds and risk assessment tables, and then generates corresponding alarms or control strategies according to the abnormal data to remind the corresponding operators or managers to perform maintenance in time. When the data is seriously abnormal, the dust removal device can also be directly controlled to stop running, and the air inlet duct can be disconnected, and nitrogen can be filled into the dust removal device to reduce the risk of smoke explosion and improve the safety of dust removal.

[0030] 2. The remote monitoring system of the present invention can not only monitor the dust removal device in real time to prevent smoke explosions in the dust removal device, but also store the operation data and event data of the dust removal device during operation for a long time and integrate them into reference reports. The remote monitoring system can update or modify the originally set thresholds, explosion risk levels, etc. according to the reference reports, thereby further improving safety while maintaining dust removal efficiency, preventing smoke explosions in the dust removal device, and reducing property losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of a remote monitoring system for an explosion-proof dust removal device according to Example 1 of the present invention;

[0032] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the explosion-proof dust removal device;

[0033] Figure 3 for Figure 1A schematic diagram of the partial cross-sectional structure of a medium explosion-proof dust removal device;

[0034] Figure 4 For application Figure 1 A flow chart of a remote monitoring method of a remote monitoring system based on an explosion-proof dust removal device;

[0035] Figure 5 for Figure 4 Flow chart of the autonomous monitoring method of the dust removal device.

[0036] Main component symbols

[0037] The numbers in the figure are: 1. Dust removal device; 11. Dust collector; 111. Box; 112. Fan; 113. Air inlet pipe; 114. Exhaust pipe; 115. Dust removal bag; 1101. Separation chamber; 1102. Ash discharge chamber; 101. Air inlet; 102. Air outlet; 12. Nitrogen cylinder; 13. Pulse valve; 14. Solenoid shut-off valve; 15. Pipeline flame arrester; 2. Server; 3. Mobile terminal.

[0038] The above description of the main component symbols is combined with the accompanying drawings and specific implementation methods to further illustrate the present invention in detail. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0042] Example 1

[0043] See also Figure 1 , which is a schematic diagram of the structure of a remote monitoring system based on an explosion-proof dust removal device according to Embodiment 1 of the present invention. The remote monitoring system based on an explosion-proof dust removal device comprises: at least one dust removal device 1, a server 2 and at least one mobile terminal 3. The server 2 is remotely connected to each dust removal device 1 via an RS485 port, a wireless network, etc. The server 2 is also remotely connected to the mobile terminal 3 using a wireless network.

[0044] Please combine Figure 2 and Figure 3 , Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the explosion-proof dust removal device; Figure 3 for Figure 1 Schematic diagram of the partial cross-sectional structure of the explosion-proof dust removal device. The dust removal device 1 has an explosion-proof function, which can prevent the smoke from exploding while removing dust from the smoke. The dust removal device 1 includes a dust collector 11, a nitrogen filling component, a pipeline flame arrester 15, an electromagnetic shut-off valve 14, an alarm, a detection component and a controller. The dust collector 11 is used to absorb the smoke generated by boilers or other industrial production, and then separate the dust in the smoke from the gas to reduce the pollution of the smoke to the environment.

[0045] The dust collector 11 includes a housing 111, a fan 112, an air inlet pipe 113, an air outlet pipe 114 and a plurality of dust removal bags 115. A separation chamber 1101 is provided in the housing 111, the air inlet pipe 113 is connected to one side of the separation chamber 1101, and the air outlet pipe 114 is connected to the other side of the separation chamber 1101. Figure 2 As shown, in this embodiment, the box body 111 is a square box body, and the bottom is set to be bucket-shaped to facilitate the discharge of separated dust. The box body 111 is made of stainless steel, which has the characteristics of high temperature resistance and corrosion resistance and a long practical life. Of course, in other embodiments, the box body 111 can also be cylindrical or other shapes, and can also be made of other materials, such as carbon steel, fiberglass, cement, granite, etc.

[0046] The fan 112 is installed on the exhaust pipe 114. The fan can be an axial flow fan, a centrifugal fan, a mixed flow fan or a cross flow fan, etc., as long as it can suck the smoke into the separation chamber 1101 and discharge it from the exhaust pipe 114.

[0047] An array of multiple dust bags 115 is installed in the separation chamber. The dust bag 115 is used to separate small dust particles in the flue gas. Specifically, after the flue gas passes through the dust bag 115, the gas portion thereof directly passes through the dust bag 115 and flows to the exhaust pipe 114, while the small dust particles are adsorbed on the dust bag 115, thereby separating the flue gas from the dust. In this embodiment, the dust bag 115 adopts an anti-static dust bag, which can avoid static electricity generated by friction with the dust bag during flue gas flow, thereby reducing the risk of flue gas explosion. Specifically, the dust bag 115 can be made of wool filter material, synthetic fiber filter material, glass fiber filter material, etc., as long as it can filter the dust in the flue gas.

[0048] The bottom of the box 111 is provided with an ash discharge chamber 1102, which is connected to the separation chamber 1101. The ash discharge chamber 1102 is a bucket-shaped chamber. After the flue gas enters the separation chamber 1101, it collides with the dust bag 115 or the inner wall of the box 111 or the baffle installed in the separation chamber 1101, reducing the flue gas flow rate. The large particles of dust in the flue gas fall directly downward under the action of gravity and are then discharged outward along the ash discharge chamber 1102. In addition, small particles of dust continue to accumulate on the dust bag 115 until a certain amount is reached, and then they automatically fall off the dust bag 115 and are then discharged outward through the ash discharge chamber 1102.

[0049] During operation of the dust collector 11 , there is a risk of explosion inside the dust collector 11 , that is, in the separation chamber 1101 , because the temperature of the flue gas is relatively high and the flue gas contains air and some combustible dust.

[0050] The pipeline flame arrester 15 is installed on the air inlet pipe 113, which can extinguish the smoke flame passing through the air inlet pipe 113, prevent the smoke in the separation chamber 1101 from directly contacting the open flame, and reduce the smoke temperature and the risk of explosion. The pipeline flame arrester 15 can be a corrugated flame arrester, a water seal flame arrester or a filling flame arrester, etc., as long as it can prevent the flame in the smoke from entering the separation chamber.

[0051] The electromagnetic shut-off valve 14 is also installed on the air inlet pipe 113, and the electromagnetic shut-off valve 14 is located between the pipeline flame arrester 15 and the air inlet 101. The electromagnetic shut-off valve 14 is used to control the on-off state of the air inlet pipe 113. If the explosion risk in the separation chamber 1101 reaches a preset level, after the fan 112 is actively turned off, the smoke continues to flow into the separation chamber 1101 under the action of inertia, which may increase the explosion risk. By interlocking the electromagnetic shut-off valve 14 with the fan 112, the electromagnetic shut-off valve 14 can be automatically closed, thereby disconnecting the air inlet pipe 113 to prevent the smoke from continuing to flow into the separation chamber.

[0052] The nitrogen filling assembly includes a nitrogen cylinder 12 and a pulse valve 13. The nitrogen cylinder 12 is connected to the separation chamber 1101 through a pipeline, and a pulse valve 13 is installed on the pipeline between the nitrogen cylinder 12 and the separation chamber 1101. The nitrogen cylinder 12 is filled with high-pressure liquid nitrogen. When the pulse valve 13 is opened, the liquid nitrogen is converted into gaseous nitrogen and filled into the separation chamber 1101, which can reduce the oxygen content in the separation chamber 1101 and reduce the risk of explosion.

[0053] The alarm is installed on the dust collector 11. When the explosion risk of the smoke in the separation chamber 1101 reaches a preset level, the alarm sounds an alarm to alert the management personnel. In this embodiment, the alarm uses an electric sound and light alarm, which can not only warn the management personnel through the alarm sound, but also emit light to facilitate the management personnel to check the specific location of the dust removal device. Among them, the light can also be divided into different colors, such as yellow, blue, red, etc., to represent different alarm information.

[0054] The monitoring component includes at least two air pressure sensors, at least two dust concentration sensors, at least two flow rate sensors, at least two temperature sensors 1 and at least one temperature sensor 2. Among them, the air pressure sensor, dust concentration sensor, flow rate sensor and temperature sensor 1 are respectively installed on the air inlet 101 and the air outlet 102 of the dust removal device 1, and are used to measure the air pressure, air inlet temperature, air inlet dust concentration, air inlet flue gas flow rate, air pressure, air outlet temperature, air outlet dust concentration and air outlet flue gas flow rate at the air outlet. Temperature sensor 2 is installed on the fan 112 to measure the fan temperature.

[0055] The pressure relief valve is installed on the dust collector 11 and communicated with the separation chamber 1101. When the air pressure in the separation chamber 1101 is too high, the pressure relief valve can be opened to discharge an appropriate amount of smoke to reduce the risk of explosion.

[0056] The controller is electrically connected to the monitoring component, the alarm, the pulse valve 13, the electromagnetic shut-off valve 14, and the fan 112. The controller can receive the operating data collected by the monitoring component, and generate corresponding signals or instructions according to the operating data, thereby controlling the operating status of the alarm, the pulse valve 13, the electromagnetic shut-off valve 14, and the fan 112.

[0057] The controller includes an explosion risk assessment module, an early warning signal generation module and an explosion-proof signal generation module, and may also include a calculation module, an event generation module and a communication module.

[0058] The explosion risk assessment module is used to query and output the current explosion risk level in a pre-stored risk assessment table according to the operation data. The risk assessment table is used to characterize the mapping relationship between the operation data and the explosion risk level. Among them, the explosion risk level includes no risk level, primary level, intermediate level and advanced level. The fan evaluation table can be obtained based on experiments, and the main parameters include the air pressure, oxygen content, dust concentration, temperature, etc. in the separation chamber 1101. Since the air pressure and oxygen content in the separation chamber 1101 are relatively stable during the dust removal process, in the actual evaluation, the flue gas temperature and dust concentration are used as the main parameters for risk assessment. When the explosion risk level is at the no risk level, it indicates that there is no explosion risk or the explosion risk is extremely low and can be ignored. When the explosion risk reaches the primary level or above, an alarm should be issued to prompt the management personnel or monitoring personnel to take emergency measures. When the explosion risk reaches the intermediate level, the fan 112 should be turned off in time, and the dust collector 11 should be operated accordingly, that is, the air inlet pipe 113 should be disconnected. The advanced explosion risk is only for reference, and the advanced explosion risk should be avoided as much as possible during the dust removal work.

[0059] The warning signal generation module is used to: 1. Generate a warning signal when the explosion risk level reaches the primary level, and send the warning signal to the alarm. After receiving the warning signal, the alarm will send out an audible and visual alarm to warn the management personnel.

[0060] Second, when the dust collector 11 leaks, a leakage warning signal is sent to the alarm. The leakage of the dust collector 11 is determined by the following method: the velocity difference between the air inlet velocity and the air outlet velocity is calculated. If the velocity difference reaches a preset velocity threshold, it indicates that the dust collector 11 is leaking. In this embodiment, the velocity of the air inlet 101 is generally 15~18m / s, the velocity of the air outlet 102 is generally 12~15m / s, and the velocity threshold is set to 3m / s. Of course, in other embodiments, the velocity difference can be larger or smaller.

[0061] 3. When the pressure difference reaches a preset pressure threshold 1, a warning signal is sent to the alarm. The pressure difference is the difference between the air inlet pressure and the air outlet pressure. In this embodiment, the pressure threshold 1 is set to 1.2 KPa.

[0062] 4. When both the air pressure at the air inlet and the air pressure at the air outlet reach a preset air pressure threshold value 4, a warning signal is sent to the alarm. In addition, a pressure relief signal can also be sent to the pressure relief valve to open the pressure relief valve to discharge part of the smoke in the dust collector 11, thereby reducing the air pressure at the air inlet and the air outlet.

[0063] 5. When the fan temperature reaches a preset temperature threshold, a warning signal is sent to the alarm. In addition, a cut-off signal can be sent to the fan 112 to stop the fan 112 from running, and the fan 112 is cooled naturally or maintained by staff.

[0064] The explosion-proof signal generation module is used to generate a cut-off signal and a nitrogen filling signal when the explosion risk level reaches the intermediate level, and send the cut-off signal to the fan 112 and the nitrogen filling signal to the pulse valve 13. The fan 112 automatically stops after receiving the cut-off signal, and since the electromagnetic cut-off valve 14 is interlocked with the fan 112, the electromagnetic cut-off valve 14 is also actively disconnected to prevent the smoke from continuing to flow into the separation chamber 1101. The pulse valve automatically opens after receiving the nitrogen filling signal, and then fills the nitrogen in the nitrogen bottle 12 into the separation chamber 1101.

[0065] The calculation module is used to calculate the above-mentioned flow velocity difference, pressure difference, etc. In other embodiments, the calculation module can also calculate the probability of smoke explosion according to a pre-stored explosion probability model.

[0066] The event generation module is used to record the warning signal, the cut-off signal, the nitrogen filling signal and the time when each signal is generated, and then generate corresponding event data. For example, when the warning signal generation module issues a warning signal, the event generation module records the warning signal and the time when the signal is issued.

[0067] The communication module is used to transmit the operation data and event data of the dust removal device 1 during operation. Specifically, the communication module can transmit both the operation data and the event data to the server 2.

[0068] The dust removal device 1 of this embodiment monitors its own operating data in real time, and then determines whether an abnormality occurs based on multiple pre-stored parameter thresholds and risk assessment tables, and then generates corresponding alarms or control strategies based on the abnormal data to remind the corresponding operators or managers to perform maintenance in a timely manner. When the data is seriously abnormal, the dust removal device 1 can also be directly controlled to stop running, and the air inlet duct can be disconnected, and nitrogen can be filled into the dust removal device 1 to reduce the risk of smoke explosion and improve the safety of dust removal.

[0069] The server 2 can store the operation data and event data for a long time, and then generate reference reports based on the operation data and event data. At the same time, the reference reports can also be updated after receiving new operation data and time data for reference by operators or managers. Specifically, when the server 2 establishes a remote connection with each dust removal device 1, it automatically numbers each dust removal device. When the server receives data transmitted by the dust removal device 1, the operation data and event data from each dust removal device 1 are classified and stored.

[0070] In other embodiments, after the dust removal device 1 collects the corresponding operation data through the monitoring component, it can also directly send the operation data to the server 2. The server 2 analyzes the operation data, and then generates a corresponding alarm signal or control signal when the operation data is abnormal, so that the dust removal device 1 issues an alarm or takes a corresponding action. The server 2 can also record the generated alarm signal, control signal and the time when the signal is generated, that is, generate event data.

[0071] The mobile terminal 3 establishes a remote connection with the server 2 through the Internet, and then requests to download the corresponding operating data by verifying the number of each dust removal device 1, and remotely monitors the corresponding dust removal device 1. The mobile terminal 3 can be a computer, a mobile phone, an electronic watch, etc., as long as it can achieve remote connection with the server and exchange data. In this embodiment, the mobile terminal 3 connects to the server 2 by installing the configuration software. The configuration software can query and download the operating data, event data and reference reports stored in the server 2 in real time, and display the current operating data in real time. At the same time, when the operating data is abnormal, the current operating data can also be notified to the operating personnel or management personnel in a timely manner through various means such as software interface, e-mail, mobile phone text messages, instant messaging software, sound and computer automatic voice, so as to timely control the operating status of the dust removal device 1.

[0072] The remote monitoring system of this embodiment can not only monitor the dust removal device in real time to prevent smoke explosions in the dust removal device, but also store the operation data and event data of the dust removal device during operation for a long time, and integrate them into reference reports, and update or modify the originally set thresholds, explosion risk levels, etc., so as to further improve safety while maintaining dust removal efficiency, prevent smoke explosions in the dust removal device, and reduce property losses.

[0073] In order to facilitate real-time monitoring of the above remote monitoring system, this embodiment also provides a remote monitoring method based on explosion-proof dust removal device. Figure 4 and Figure 5 , Figure 4 For application Figure 1 A flow chart of a remote monitoring method of a remote monitoring system based on an explosion-proof dust removal device; Figure 5 for Figure 4 Flow chart of the autonomous monitoring method of the dust removal device. The remote monitoring method includes the following processes:

[0074] S1: Each dust removal device performs autonomous monitoring and records event data and operation data during the autonomous monitoring process. The autonomous monitoring method is as follows:

[0075] S11: Collecting the operation data of the dust removal device 1. The operation data includes air pressure at the air inlet, air temperature at the air inlet, dust concentration at the air inlet, flue gas flow rate at the air inlet, air pressure at the air outlet, air temperature at the air outlet, dust concentration at the air outlet, flue gas flow rate at the air outlet, and fan temperature. Each dust removal device 1 can collect its own operation data in real time through the corresponding monitoring components.

[0076] S12: Calculate the velocity difference Δv between the inlet flow rate and the outlet flow rate, and determine whether the velocity difference Δv exceeds a preset velocity difference threshold v1. If so, a leakage alarm is issued. The inlet flow rate and outlet flow rate of the dust removal device 1 are both related to the output power of the fan 112 and the air permeability of the dust bag 115. When the output power of the fan 112 remains unchanged, the inlet flow rate and the outlet flow rate are relatively stable. If the velocity difference Δv is significantly higher than the preset velocity difference threshold v1, it indicates that the dust removal device 1 is leaking, and the operator is reminded to check and repair it in time.

[0077] S13: Calculate the pressure difference ΔP between the air inlet pressure and the air outlet pressure, and determine whether the pressure difference ΔP exceeds a preset pressure threshold value P1. If so, issue an early warning, and continue to determine whether the pressure difference exceeds a preset pressure threshold value P2. If so, issue an alarm to replace the filter bag. Otherwise, continue to determine whether the pressure difference exceeds a preset pressure threshold value P3. If so, issue an alarm to clean the dust. Similar to the air inlet flow rate, when the dust removal device 1 operates normally, the air inlet pressure and the air outlet pressure are generally relatively stable, and when the cross-sectional area of ​​the air inlet pipe is equal to the cross-sectional area of ​​the air outlet pipe, the air inlet pressure should be close to the air outlet pressure. When the pressure difference ΔP exceeds the preset pressure threshold value P1, it indicates that the incoming smoke cannot be discharged in time, that is, the filtering function of the dust removal bag 115 is abnormal. In this embodiment, when the pressure difference ΔP reaches 1.2KPa, an early warning reminder is issued to the operator. When the pressure difference ΔP reaches 1.5 KPa, the operator is reminded to promptly replace the dust bag 115. When the pressure difference ΔP reaches 1.8 KPa, the operator is reminded to perform manual dust removal.

[0078] S14: Query and output the current explosion risk level in a pre-stored risk assessment table based on the air inlet temperature, air outlet temperature, air inlet dust concentration and air outlet dust concentration. The risk assessment table is used to characterize the mapping relationship between operating data and explosion risk levels, which include primary and intermediate levels. Determine whether the explosion risk level has reached the primary level. If so, issue a warning message, and continue to determine whether the explosion risk level has reached the intermediate level. If so, control the closure of the fan of the dust removal device, disconnect the air inlet and outlet of the dust removal device, and input nitrogen into the separation chamber of the dust removal device. In other embodiments, the probability of smoke explosion can also be calculated based on a pre-stored explosion probability model, and then converted into an explosion risk level, so as to evaluate whether the current operating data is abnormal, and perform corresponding warnings or controls.

[0079] S15: Determine whether the fan temperature reaches a preset temperature threshold. If yes, lower the output power of the fan 112 or shut down the fan 112 until the temperature of the fan 112 is lower than the temperature threshold. The fan 112 will generate a large amount of heat during long-term operation, so it needs to be cooled to avoid damage to the fan 112. In addition, when the fan 112 fails, there is a possibility of a large amount of heat release, and even open flames, which increases the probability of smoke explosion. Therefore, it is necessary to shut down the fan 112 in time to reduce the risk of explosion. In other embodiments, in addition to the electromagnetic shut-off valve interlocked with the fan 112, a solenoid valve can be installed between the fan 112 and the separation chamber 1101, and the solenoid valve is interlocked with the fan. After the fan 112 stops running, the air inlet pipe 113 and the exhaust pipe 114 are directly cut off to isolate the smoke and high temperature and reduce the risk of explosion.

[0080] S2: Number each dust removal device 1 through the server 2, and then store the event data and operation data of each dust removal device 1 in different data sets. Specifically, the dust removal device 1 interacts with the server 2 according to a preset time period, and then transmits all the operation data and event data in the previous time period to the server 2. The server 2 classifies the operation data and event data by identifying the corresponding number and transmission time, and stores them in the corresponding data set. The server 2 can also generate a corresponding reference report based on the operation data and event data in each data set.

[0081] S3: Update the parameter threshold and explosion risk level of the dust removal device according to the reference report. The server 2 can also update or modify the preset threshold and explosion risk level in each dust removal device 1 according to the reference report, so as to further reduce the probability of smoke explosion while maintaining the dust removal efficiency.

[0082] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A remote monitoring method for an explosion-proof dust removal device, which is applied to a remote monitoring system for an explosion-proof dust removal device, the remote monitoring system comprising: At least one explosion-proof dust removal device, a server and at least one mobile terminal; The server is remotely connected to the communication module of each of the dust removal devices; The server is used to receive and store the operation data and event data of the dust removal device; the mobile terminal is remotely connected to the server; the mobile terminal is used to request the server to download the operation data, and to remotely control the dust removal device through the server; The dust removal device comprises: a dust collector, an electromagnetic shut-off valve, a pipeline flame arrester, a nitrogen filling component, an alarm, a monitoring component, and a controller; the dust collector comprises a housing, an air inlet pipe, an air exhaust pipe, a fan, and a plurality of dust removal bags, and a separation chamber is provided in the housing; the air inlet pipe is connected to one side of the separation chamber; the air exhaust pipe is connected to the other side of the separation chamber; the fan is installed on the air exhaust pipe; a plurality of dust removal bag arrays are arranged in the separation chamber; the electromagnetic shut-off valve is installed on the air inlet pipe, and is used to control the on-off state of the air inlet pipe; the electromagnetic shut-off valve is connected to the The fan interlock; the pipeline flame arrester is installed on the air inlet pipe; the pipeline flame arrester is located between the electromagnetic shut-off valve and the dust collector; the nitrogen filling assembly includes a nitrogen bottle and a pulse valve; the nitrogen bottle is connected to the separation chamber for filling nitrogen into the separation chamber; the pulse valve is installed on the pipeline between the nitrogen bottle and the dust bag for controlling the connection state between the nitrogen bottle and the separation chamber; the alarm is installed on the dust collector; the monitoring assembly is installed on the dust collector for real-time measurement of the operation data of the dust collector; the controller is respectively connected to the The monitoring component, the alarm, the pulse valve, the electromagnetic shut-off valve, and the fan are electrically connected; the controller includes an explosion risk assessment module, an early warning signal generation module, an explosion-proof signal generation module, an event generation module, and a communication module; the explosion risk assessment module is used to query and output the current explosion risk level in a pre-stored risk assessment table according to the operation data; the risk assessment table is used to characterize the mapping relationship between the operation data and the explosion risk level, and the explosion risk level includes primary and intermediate levels; the early warning signal generation module is used to generate an early warning signal when the explosion risk level reaches the primary level, and send the early warning signal to the alarm; the explosion-proof signal generation module is used to generate a shut-off signal and a nitrogen filling signal when the explosion risk level reaches the intermediate level, and send the shut-off signal to the fan, and send the nitrogen filling signal to the pulse valve; the event generation module is used to record the early warning signal, the shut-off signal, the nitrogen filling signal, and the time when each signal is generated, and then generate corresponding event data; the communication module is used to transmit the operation data and event data of the dust removal device during operation; Characterized in that the remote monitoring method includes the following process: S1: Each dust removal device performs autonomous monitoring and records event data and operation data during the autonomous monitoring process; wherein the autonomous monitoring method is as follows: S11: collecting the operating data obtained by the monitoring component of the dust removal device; the operating data includes air inlet pressure, air inlet temperature, air inlet dust concentration, air inlet flue gas flow rate, air outlet pressure, air outlet temperature, air outlet dust concentration, air outlet flue gas flow rate and fan temperature; S12: Calculate the flow velocity difference between the air inlet flow velocity and the air outlet flow velocity, and determine whether the flow velocity difference exceeds a preset flow velocity difference threshold, and if so, issue a leakage alarm; S13: Calculate the pressure difference between the air inlet pressure and the air outlet pressure, determine whether the pressure difference exceeds a preset pressure threshold value 1, if yes, issue a warning, continue to determine whether the pressure difference exceeds a preset pressure threshold value 2, if yes, issue a filter bag replacement alarm; otherwise, continue to determine whether the pressure difference exceeds a preset pressure threshold value 3, if yes, issue a dust removal alarm; S14: querying and outputting the current explosion risk level in a pre-stored risk assessment table according to the air inlet temperature, the air outlet temperature, the air inlet dust concentration and the air outlet dust concentration; the risk assessment table is used to characterize the mapping relationship between the operating data and the explosion risk level, and the explosion risk level includes primary and intermediate levels; judging whether the explosion risk level has reached the primary level, if so, issuing a warning message, and continuing to judge whether the explosion risk level has reached the intermediate level, if so, controlling to close the fan of the dust removal device, disconnecting the air inlet and the air outlet of the dust removal device, and inputting nitrogen into the separation chamber of the dust removal device; S15: determining whether the fan temperature reaches a preset temperature threshold, and if so, reducing the output power of the fan of the dust removal device or shutting down the fan until the fan temperature is lower than the temperature threshold; S2: Numbering each dust removal device through a server, and then storing the event data and operation data of each dust removal device in different data sets; generating a corresponding reference report according to the operation data and the event data in each data set; S3: updating the parameter threshold and explosion risk level of the dust removal device according to the reference report.

2. The remote monitoring method for explosion-proof dust removal device according to claim 1, characterized in that: In step S2, the dust removal device exchanges data with the server according to a preset time period, and then transmits all the operation data and the event data in the previous time period to the server; The server classifies the operation data and the event data by identifying corresponding numbers and transmission times, and stores them in corresponding data sets.

3. The remote monitoring method for explosion-proof dust removal device according to claim 1, characterized in that: Configuration software is installed on the mobile terminal; the configuration software is used to generate statistical reports based on the downloaded operating data and send the statistical reports to management personnel.

4. The remote monitoring method for explosion-proof dust removal device according to claim 1, characterized in that: The monitoring component includes two air pressure sensors, two dust concentration sensors, two flow rate sensors, two temperature sensors 1 and 2; an air pressure sensor, a dust concentration sensor, a flow rate sensor and a temperature sensor 1 are each installed on the air inlet and the air outlet of the dust removal device; and a temperature sensor 2 is installed on the fan.

5. The remote monitoring method for explosion-proof dust removal device according to claim 1, characterized in that: The dust collector further comprises a pressure relief valve, which is mounted on the dust collector and communicated with the separation chamber.

6. The remote monitoring method for explosion-proof dust removal device according to claim 1, characterized in that: The bottom of the box body is provided with an ash discharge chamber, which is communicated with the separation chamber and is used for discharging dust separated from the smoke.

7. The remote monitoring method for explosion-proof dust removal device according to claim 1, characterized in that: The dust removal bag is an anti-static dust removal cloth bag.

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