A device suitable for monitoring the cleaning state of a pulse dry precipitator

Abstract

The application discloses a device suitable for monitoring the dust cleaning state of a pulse dry deduster, which comprises an information acquisition module, a first signal analysis module, a second signal analysis module and an information output module, and relates to the technical field of dust cleaning state monitoring of a pulse deduster. The device solves the technical problem that the dust cleaning gas source pressure and flow are unstable, the electromagnetic coil of the pulse valve is aged and falls off, the diaphragm of the pulse valve is damaged and other phenomena can cause the pulse valve to work abnormally, and the deduster control system or the central control operator cannot make a timely judgment. The device realizes the autonomous judgment of the deduster control system on the running state of the dust cleaning system, timely solves the problem of poor work of the pulse valve caused by the unstable dust cleaning gas source and the aging of the electromagnetic coil, improves the service life of the cloth bag and the running effect of the dust removal system, and reduces the running cost of the dust removal system.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of dust cleaning state monitoring of pulse dust collector, in particular to a device suitable for monitoring dust cleaning state of pulse dry dust collector. BACKGROUND

[0002] The pulse dry dust collector is a high-efficiency and low-resistance dry dust filtering device, and according to the filtering material form, the pulse dry dust collector can be divided into three types of dust collectors, i.e., filter bag type, filter cylinder type and plastic burning plate type.

[0003] Although the pulse dry dust collector is a mature and widely used dust collector form under the background of "ultra-low emission", for a single dust collector, the control system can only send a running signal to the main dust cleaning component pulse valve, but cannot obtain the feedback signal of the pulse valve operation, and the dust collector control system or the central control operator cannot effectively determine whether the pulse valve and other equipment are normally operated, which is a blind spot of the pulse dry dust collector control. For such problems, the common method at present is to rely on point inspection personnel to find in the process of point inspection, but the efficiency is often low, and the fault discovery is also relatively lagging, causing the differential pressure of the dust collector to rise, the running current of the fan to become large, and the dust removal effect to become poor, which increases the operating cost. Therefore, in order to protect the filter bag and maintain the operation effect of the dust removal system, it is necessary to strengthen the monitoring of the dust cleaning process of the pulse dry dust collector, timely solve the problems of unstable dust cleaning gas source, aging of the electromagnetic coil and other causes of poor work of the pulse valve, which can not only improve the service life of the bag and the operation effect of the dust removal system, but also reduce the operation cost of the dust removal system. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a device suitable for monitoring the dust cleaning state of the pulse dry dust collector, which solves the problem that the unstable pressure and flow of the dust cleaning gas source, the aging and falling of the electromagnetic coil of the pulse valve, and the damage of the diaphragm of the pulse valve can cause the pulse valve to work abnormally, and the dust collector control system or the central control operator cannot make a timely judgment.

[0005] To achieve the above purpose, the present application realizes the following technical scheme: a device suitable for monitoring the dust cleaning state of the pulse dry dust collector, comprising:

[0006] An information acquisition module is used to acquire the basic information of the target object and transmit it to the first signal analysis module, wherein the target object is a pressure transmitter and a noise sensor, and the basic information includes normal value range, pressure drop value, fluctuation value, wavelength, wave crest, frequency and period;

[0007] The first signal analysis module is used for obtaining the detection results of the noise sensor and the pressure transmitter and analyzing the detection results to obtain noise analysis results and pressure analysis results, wherein the noise analysis results include sensor fault information and detection signal information, then the noise analysis results are analyzed to determine whether the ash removal program needs to be started and a judgment result is generated, and the judgment result is analyzed to generate analysis information, wherein the analysis information includes pulse signal information and non-pulse signal information, then the pressure detection signal information in the pressure analysis results is analyzed, the corresponding ash removal pressure information is generated by judging the pressure value, and the analysis information is transmitted to the second signal analysis module;

[0008] The second signal analysis module is used for obtaining and analyzing the analysis information, obtaining pulse valve state information by analyzing the pulse signal information in the analysis information, obtaining fault information by analyzing the non-pulse signal information in the analysis information, transmitting the pulse valve state information and the fault information to the adaptive analysis module, obtaining the transmitted ash removal pressure information and analyzing the same, obtaining pulse valve information by analyzing ash removal pressure normal information in the ash removal pressure information, and transmitting the pulse valve information to the information output module.

[0009] As a further scheme of the present application, the specific manner in which the first signal module generates the judgment result is as follows:

[0010] S1: obtaining the detection result of the noise sensor and determining whether the noise sensor detects a signal, when the noise sensor does not detect a signal, generating sensor fault alarm information, otherwise, when the noise sensor detects a signal, generating ash removal information;

[0011] S2: then obtaining the ash removal information and judging the same, when the ash removal program needs to be started, generating a deviation background value signal, when the ash removal program does not need to be started, calculating the background value of the pulse dust collector, and the specific calculation manner is as follows:

[0012] substituting the fluctuation value, the wavelength, the wave crest, the frequency and the period into the formula to obtain the background value Q, wherein BD represents the fluctuation value, BC represents the wavelength, BF represents the wave crest, PL represents the frequency, and T represents the period;

[0013] S3: then obtaining the deviation background value signal and determining whether the deviation background value signal exists, when the deviation background value signal does not exist, it indicates that the pulse valve operation has a fault, and pulse valve operation fault information is generated, otherwise, the deviation background value signal is judged again to generate a secondary judgment result;

[0014] S4: the way of generating the secondary judgment result is that when the generated deviated background value signal is a pulse signal, pulse signal information is generated, and when the generated deviated background value signal is not a pulse signal, non-pulse signal information is generated.

[0015] As a further scheme of the present application, the specific way in which the first signal module generates the dust removal pressure information is that:

[0016] A1: the detection result of the pressure transmitter is acquired, and it is judged whether the pressure transmitter detects a signal; when the pressure transmitter does not detect a signal, sensor fault information is generated; otherwise, when the pressure transmitter detects a signal, pressure value comparison information is generated;

[0017] A2: then, the pressure value comparison information is acquired, and a real-time pressure value is acquired and compared with the dust removal pressure value, and the dust removal pressure value includes a normal value, an over early warning value and an over alarm value; when the real-time pressure value is the normal value, dust removal pressure normal information is generated; when the real-time pressure value is the over early warning value, dust removal pressure early warning information is generated; and when the real-time pressure value is the over alarm value, dust removal pressure alarm information is generated.

[0018] As a further scheme of the present application, the specific way in which the second signal module generates the pulse valve state information and fault information is as follows:

[0019] P1: the pulse signal information is acquired, and a background value is acquired and compared with a pulse comparison value, wherein the pulse comparison value includes a normal value, an over early warning value and an over alarm value, and the specific comparison way is that when the background value is the normal value, a pulse valve normal signal is generated, and dust removal state normal information is generated simultaneously; when the background value is the over early warning value, a pulse valve state early warning signal is generated, and dust removal state early warning information is generated simultaneously; and when the background value is the over alarm value, a pulse valve state alarm signal is generated, and dust removal state alarm information is generated simultaneously.

[0020] P2: the non-pulse signal information is acquired, and it is judged whether it is an intermittent continuous signal; when the non-pulse signal information is the intermittent continuous signal, gas source leakage fault information is generated, and gas source pipeline fault alarm information is generated simultaneously; otherwise, when the non-pulse signal information is not the intermittent continuous signal, a pulse valve diaphragm suction fault information is generated, and a pulse valve operation fault alarm information is generated simultaneously.

[0021] As a further scheme of the present application, the specific way in which the second signal analysis module generates the pulse valve information is as follows:

[0022] B1: the dust removal pressure normal information is acquired, and it is judged whether there is a pressure drop value; when there is no blowdown pressure drop, a pulse valve operation fault alarm information is generated; and when there is a blowdown pressure drop, a pressure drop value judgment information is generated.

[0023] B2: Then the pressure drop value judgment information is acquired, the pressure drop value is acquired and judged, when the pressure drop value is normal, pulse valve normal information is generated, otherwise when the pressure drop value is abnormal, pulse valve diaphragm suction failure information is generated.

[0024] As a further scheme of the present application: the information output module is used for acquiring the transmitted pulse valve information and failure information, and displays the same to an operator through a display device.

[0025] Advantageous effects

[0026] The present application provides a device suitable for monitoring the dust cleaning state of a pulse dry dust collector.

[0027] The present application realizes the autonomous judgment of the dust cleaning system running state by a device suitable for monitoring the dust cleaning state of a pulse dry dust collector, and timely solves the problems of poor work of the pulse valve caused by unstable dust cleaning gas source, aging of the electromagnetic coil and the like, which not only can improve the service life of the bag and the running effect of the dust removal system, but also can reduce the running cost of the dust removal system. BRIEF DESCRIPTION OF DRAWINGS

[0028] In the figure: 1 - dust collector upper box, 2 - injection gas bag, 3 - pulse valve, 4 - lift valve, 5 - dust cleaning gas source pipeline, 6 - sensor 1, 7 - sensor 2, 8 - mounting bracket, 9 - instrument cabinet, 10 - matrix cabinet, 11 / 12 - cable, bridge, 13 - dust removal monitoring cabinet, 14 - HMI, 15 - dust collector differential pressure sensor.

[0029] Figure 1 Module diagram of the present application;

[0030] Figure 2 Dust removal monitoring cabinet structure diagram of the present application;

[0031] Figure 3 Structure flow chart of the present application;

[0032] Figure 4 Program state flow chart of the dust removal monitoring cabinet of the present application;

[0033] Figure 5 Program logic control diagram of the dust removal monitoring cabinet of the present application. DETAILED DESCRIPTION

[0034] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0035] Embodiment one, please refer to Figure 1 、 Figures 3 to 5 The present application provides a device suitable for monitoring the dust cleaning state of a pulse dry precipitator, comprising:

[0036] An information acquisition module is configured to acquire basic information of a target object and transmit the basic information to an adaptive analysis module, wherein the target object is a pressure transmitter and a noise sensor, and the basic information includes a normal value range, a pressure drop value, a fluctuation value, a wavelength, a wave crest, a frequency and a period. Specifically, the pressure transmitter acquires the pressure drop value, and the noise sensor generates a corresponding feedback signal.

[0037] A first signal analysis module is configured to acquire a detection result of the noise sensor and analyze the detection result to obtain a noise analysis result, wherein the noise analysis result includes sensor fault information and detection signal information. Then, the analysis result is analyzed to determine whether to start a dust cleaning program and generate a judgment result, wherein the judgment result includes start information and non-start information. The judgment result is analyzed to generate analysis information, wherein the analysis information includes pulse signal information and non-pulse signal information. The analysis information is transmitted to a second signal analysis module, and the specific way of generating the judgment result is as follows:

[0038] S1: The detection result of the noise sensor is acquired, and it is determined whether the noise sensor detects a signal. When the noise sensor does not detect a signal, sensor fault alarm information is generated. Otherwise, when the noise sensor detects a signal, dust cleaning information is generated.

[0039] S2: Then, the dust cleaning information is acquired and judged. When the dust cleaning program needs to be started, a background value signal deviating from the background value is generated. When the dust cleaning program does not need to be started, the background value of the pulse dust collector is calculated, and the specific calculation method is as follows:

[0040] The fluctuation value, the wavelength, the wave crest, the frequency and the period are substituted into the formula to calculate the background value Q, wherein BD represents the fluctuation value, BC represents the wavelength, BF represents the wave crest, PL represents the frequency, and T represents the period.

[0041] S3: Then the deviation background value signal is acquired, and it is judged whether the deviation background value signal exists. When the deviation background value signal does not exist, it indicates that the pulse valve operation has a fault, and pulse valve operation fault information is generated. Otherwise, the deviation background value signal is judged again to generate a secondary judgment result;

[0042] S4: The secondary judgment result is generated in the following manner: when the generated deviation background value signal is a pulse signal, pulse signal information is generated. When the generated deviation background value signal is not a pulse signal, non-pulse signal information is generated.

[0043] The second signal analysis module is configured to acquire and analyze analysis information. Pulse valve state information is obtained by analyzing pulse signal information in the analysis information, and fault information is obtained by analyzing non-pulse signal information in the analysis information. The pulse valve state information and the fault information are transmitted to the adaptive analysis module, and the specific manner of generating the pulse valve state information and the fault information is as follows:

[0044] P1: The pulse signal information is acquired, and the background value is acquired and compared with the pulse comparison value. The pulse comparison value includes a normal value, an over-warning value, and an over-alarm value. The specific comparison manner is as follows: when the background value is the normal value, a pulse valve normal signal is generated, and a dust removal state normal information is generated. When the background value is the over-warning value, a pulse valve state warning signal is generated, and a dust removal state warning information is generated. When the background value is the over-alarm value, a pulse valve state alarm signal is generated, and a dust removal state alarm information is generated.

[0045] According to the actual situation analysis, the pulse state warning may exist in the situations of blow effect warning and blow state warning, and the pulse state alarm may exist in the situations of pulse valve diaphragm damage and pulse valve coil power loss.

[0046] P2: The non-pulse signal information is acquired, and it is judged whether it is an intermittent continuous signal. When the non-pulse signal information is an intermittent continuous signal, gas source leakage fault information is generated, and gas source pipeline fault alarm information is generated. Otherwise, when the non-pulse signal information is not an intermittent continuous signal, pulse valve diaphragm suction fault information is generated, and pulse valve operation fault alarm information is generated.

[0047] The information output module is configured to acquire the transmitted pulse valve state information and fault information, and display them to the operator through a display device.

[0048] Embodiment two, as embodiment two of the present application, is different from embodiment one in that the first signal analysis module obtains the detection result of the pressure transmitter and analyzes the detection result to obtain a pressure analysis result, wherein the pressure analysis result includes sensor fault information and pressure detection signal information, then the pressure detection signal information in the pressure analysis result is analyzed, the corresponding dust removal pressure information is generated by judging the pressure value, and is transmitted to the second signal analysis module, and the specific generation method of the dust removal pressure information is as follows:

[0049] A1: obtaining the detection result of the pressure transmitter and judging whether the pressure transmitter detects a signal, when no signal of the pressure transmitter is detected, generating sensor fault information, otherwise when a signal is detected, generating pressure value comparison information;

[0050] A2: then obtaining the pressure value comparison information, obtaining a real-time pressure value, and comparing the real-time pressure value with a dust removal pressure value, and the dust removal pressure value includes a normal value, an over-warning value and an over-alarm value, when the real-time pressure value is the normal value, dust removal pressure normal information is generated, when the real-time pressure value is the over-warning value, dust removal pressure warning information is generated, and when the real-time pressure value is the over-alarm value, dust removal pressure alarm information is generated.

[0051] Combined with the actual situation, the dust removal pressure warning includes dust removal pressure drop warning and pressure peak value warning, and the dust removal pressure alarm exists in the case of dust removal pressure high alarm, dust removal pressure low alarm and gas source pipeline gas leakage alarm, and subsequent operators can be directed to check.

[0052] The second signal analysis module is used for obtaining the transmitted dust removal pressure information and analyzing the same, obtaining pulse valve information by analyzing the dust removal pressure normal information in the dust removal pressure information, and transmitting the pulse valve information to the information output module, and the specific method of generating the pulse valve information is as follows:

[0053] B1: obtaining the dust removal pressure normal information and judging whether there is a pressure drop value, when there is no blowing pressure drop, pulse valve running fault alarm information is generated, and when there is blowing pressure drop, pressure drop value judgment information is generated;

[0054] B2: then obtaining the pressure drop value judgment information, obtaining the pressure drop value and judging the same, when the pressure drop value is normal, pulse valve normal information is generated, otherwise when the pressure drop value is abnormal, pulse valve diaphragm suction fault information is generated.

[0055] Combined with the actual situation, when the dust removal state is normal, the system generates corresponding dust removal suggestions combined with the pressure difference of the dust collector.

[0056] The information output module is configured to acquire the transmitted pulse valve information and display it to an operator via a display device.

[0057] Embodiment three, as an embodiment of the present application, focuses on combining the implementation processes of embodiment one and embodiment two.

[0058] Please refer to Figure 2 A device suitable for monitoring the cleaning state of a pulse dry deduster, which is applied to monitoring whether the pulse valve of the cleaning system component of the pulse dry deduster works normally. The device comprises a deduster upper box, a blowing steam drum, a pulse valve, a lifting valve, a cleaning gas source pipeline, a sensor 1, a sensor 2, a mounting bracket, a cable, a bridge, an instrument cabinet, a matrix cabinet, a dedusting monitoring cabinet, an HMI, a deduster differential pressure sensor and the like. The deduster upper box, a cover plate, the blowing steam drum, the pulse valve and the cleaning gas source pipeline are components of the dry deduster, the sensor 1 is installed on the blowing steam drum or the cleaning gas source pipeline, the sensor 2, the instrument cabinet and the matrix cabinet are installed on the upper part of the deduster upper box through the bracket, the dedusting monitoring cabinet and the HMI are arranged in the dedusting electrical room, the electric equipment is connected with the electrical cabinet through the cable and the bridge, the dedusting monitoring cabinet monitors and diagnoses the working state of the pulse valve of the cleaning system through a logic program, and the deduster differential pressure sensor provides suggestions for cleaning of the deduster, so that the dedusting monitoring system realizes self-diagnosis of the running state of the cleaning system and displays on the 14-HMI.

[0059] Part of the data in the above formula is dimensionless numerical calculation, and the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0060] The above embodiments are only used to illustrate the technical method of the present application and are not limited. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical method of the present application.

Claims

1. A device suitable for monitoring the dust removal status of a pulse-jet dry dust collector, characterized in that, include: The information acquisition module is used to acquire basic information of the target object and transmit it to the first signal analysis module. The target object is a pressure transmitter and a noise sensor. The basic information includes: normal value range, pressure drop value, fluctuation value, wavelength, peak value, frequency and period. The first signal analysis module acquires the detection results from the noise sensor and pressure transmitter, and analyzes these results to obtain noise analysis results and pressure analysis results. The noise analysis results include sensor fault information and detection signal information. Next, the module analyzes the noise analysis results to determine whether a dust removal procedure needs to be initiated and generates a judgment result. This judgment result is then analyzed to generate analysis information, including pulse signal information and non-pulse signal information. Finally, the module analyzes the pressure detection signal information in the pressure analysis results, determines the pressure value, and generates corresponding dust removal pressure information. Simultaneously, the analysis information is transmitted to the second signal analysis module, and the specific processing method is as follows: S1: Obtain the detection result of the noise sensor and determine whether the noise sensor has detected a signal. If no signal is detected, generate a sensor fault alarm message; otherwise, generate a dust removal message. S2: Next, the dust removal information is obtained and judged. When the dust removal program needs to be started, a deviation from the background value signal is generated. When the dust removal program does not need to be started, the background value of the pulse dust collector is calculated, and the specific calculation method is as follows: Substitute the fluctuation value, wavelength, peak, frequency, and period into the formula. The background value Q is calculated, where BD represents the fluctuation value, BC represents the wavelength, BF represents the wave crest, PL represents the frequency, and T represents the period. S3: Next, the deviation from the background value signal is obtained, and it is determined whether there is a deviation from the background value signal. When there is no deviation from the background value signal, it indicates that there is a fault in the operation of the pulse valve, and pulse valve operation fault information is generated. Otherwise, the deviation from the background value signal is judged a second time to generate a second judgment result. S4: The method for generating the secondary judgment result is as follows: when the generated deviation from the background value signal is a pulse signal, pulse signal information is generated; when the generated deviation from the background value signal is not a pulse signal, non-pulse signal information is generated. The second signal analysis module is used to acquire and analyze the analysis information. It obtains the pulse valve status information by analyzing the pulse signal information in the analysis information, and obtains the fault information by analyzing the non-pulse signal information in the analysis information. At the same time, the pulse valve status information and fault information are transmitted to the adaptive analysis module. It also acquires and analyzes the transmitted dust removal pressure information. It obtains the pulse valve information by analyzing the normal dust removal pressure information in the dust removal pressure information, and transmits the pulse valve information to the information output module.

2. The device for monitoring the dust removal status of a pulse-jet dry dust collector according to claim 1, characterized in that, The first signal analysis module generates the dust removal pressure information in the following specific way: A1: Obtain the detection result of the pressure transmitter and determine whether the pressure transmitter has detected a signal. When no signal is detected from the pressure transmitter, generate sensor fault information; otherwise, when a signal is detected, generate pressure value comparison information. A2: Next, the pressure value comparison information is obtained, and the real-time pressure value is obtained and compared with the dust removal pressure value. The dust removal pressure value includes: normal value, over-warning value, and over-alarm value. When the real-time pressure value is normal, the dust removal pressure normal information is generated. When the real-time pressure value is over-warning value, the dust removal pressure warning information is generated. When the real-time pressure value is over-alarm value, the dust removal pressure alarm information is generated.

3. The device for monitoring the dust removal status of a pulse-jet dry dust collector according to claim 1, characterized in that, The second signal analysis module generates pulse valve status information and fault information in the following specific way: P1: Acquire pulse signal information and simultaneously acquire background value and compare it with pulse comparison value. The pulse comparison value includes: normal value, over-warning value, and over-alarm value. The specific comparison method is as follows: when the background value is normal, a pulse valve normal signal is generated, and dust cleaning status normal information is generated. When the background value is over-warning value, a pulse valve status warning signal is generated, and dust cleaning status warning information is generated. When the background value is over-alarm value, a pulse valve status alarm signal is generated, and dust cleaning status alarm information is generated. P2: Obtain non-pulse signal information and determine whether it is an intermittent continuous signal. When the non-pulse signal information is an intermittent continuous signal, generate gas source leakage fault information and gas source pipeline fault alarm information. Conversely, when the non-pulse signal information is not an intermittent continuous signal, generate pulse valve diaphragm engagement fault information and pulse valve operation fault alarm information.

4. The device for monitoring the dust removal status of a pulse-jet dry dust collector according to claim 1, characterized in that, The second signal analysis module generates pulse valve information in the following specific way: B1: Obtain normal cleaning pressure information and determine whether there is a pressure drop value. When there is no pulse valve pressure drop, generate pulse valve operation fault alarm information. When there is a pulse valve pressure drop, generate pressure drop value judgment information. B2: Next, the pressure drop value judgment information is obtained. At the same time, the pressure drop value is obtained and judged. When the pressure drop value is normal, the pulse valve normal information is generated. Conversely, when the pressure drop value is abnormal, the pulse valve diaphragm suction failure information is generated.

5. The device for monitoring the dust removal status of a pulse-jet dry dust collector according to claim 1, characterized in that, The information output module is used to acquire the transmitted pulse valve information and fault information, and display them to the operator through a display device.

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