Bag leakage detection device and bag-type dust collector

Abstract

The utility model provides a cloth bag leakage detection device, which is used for cloth bag leakage detection of a cloth bag dust collector and comprises a dust detector arranged on a cloth bag outlet flue of the cloth bag dust collector and used for detecting the dust concentration of an outlet of the cloth bag dust collector; the fluorescent feeding mechanism is arranged on a cloth bag inlet flue of the cloth bag dust remover, and the fluorescent feeding mechanism is used for feeding fluorescent powder at the cloth bag inlet flue; and the fluorescent camera is arranged in an air purification chamber of the bag-type dust collector and is used for monitoring fluorescent powder leaked into the air purification chamber in a bag. A dust detector is arranged at an outlet of the bag-type dust collector, a fluorescent feeding bin is arranged at an inlet of the bag-type dust collector, and fluorescent cameras are installed in all the air purification chambers. Once the dust concentration at the outlet of the bag-type dust collector exceeds the standard, fluorescent powder is added into the flue at the inlet of the bag-type dust collector, and the fluorescent cameras of the gas purification chambers are turned on to monitor the gas purification chambers, so that the positions of leakage points are accurately determined.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cloth bag dust removal, in particular to a cloth bag leak detection device and a cloth bag dust remover. BACKGROUND

[0002] The cloth bag dust remover is a high-efficiency dust removal device, and its dust removal efficiency can reach more than 99%. It has the advantages of simple structure and stable operation. However, with the long-term operation of the cloth bag dust remover, accidents such as filter bag damage and bag falling often occur during use, which seriously affects the dust removal efficiency. If the accident chamber cannot be determined and isolated within a short time, the dust concentration will continue to be high, which will bring great risk of flue gas exceeding the standard.

[0003] The clean gas chamber of the conventional cloth bag dust remover has no observation hole and built-in camera, so the central control personnel and maintenance personnel cannot effectively monitor each clean gas chamber of the cloth bag dust remover. In the event of a clean gas chamber leakage accident, the maintenance personnel often need to manually check each clean gas chamber one by one, which is time-consuming and labor-intensive and has low efficiency.

[0004] Based on the above situation, when the filter bag of the cloth bag dust remover is damaged or falls off, an effective and fast leak detection device is of great significance to the efficient and stable operation of the flue gas treatment system. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the above problems, the present application uses fluorescent capture technology to accurately detect each clean gas chamber of the cloth bag dust remover, quickly and accurately identifies the leak point position, and the equipment has high degree of automation, which solves the problems of long time-consuming, large workload and low efficiency in conventional clean gas chamber leak detection.

[0006] The present application provides a cloth bag leak detection device for cloth bag dust removal, comprising:

[0007] A dust detector is arranged on the cloth bag outlet flue of the cloth bag dust remover, and the dust detector is used to detect the dust concentration at the outlet of the cloth bag dust remover.

[0008] A fluorescent feeding mechanism is arranged on the cloth bag inlet flue of the cloth bag dust remover, and the fluorescent feeding mechanism is used to feed fluorescent powder at the cloth bag inlet flue; and

[0009] A fluorescent camera is arranged in the clean gas chamber of the cloth bag dust remover, and the fluorescent camera is used to monitor the fluorescent powder leaked into the clean gas chamber from the cloth bag.

[0010] As a preferred scheme, the dust detector, the fluorescent feeding mechanism and the fluorescent camera are respectively coupled with a DCS control system.

[0011] As a preferred scheme, the dust concentration detected by the dust detector is displayed on the screen of the DCS control system, and when the dust concentration displayed on the DCS control system is higher than the preset value, the DCS control system issues an alarm and automatically starts the fluorescent feeding mechanism to release the fluorescent powder, and controls the fluorescent feeding mechanism to automatically shut down after a preset release time.

[0012] As a preferred scheme, the fluorescent feeding mechanism comprises:

[0013] a fluorescent powder bin for storing the fluorescent powder;

[0014] a feeding port provided on the fluorescent powder bin, the feeding port being used for feeding the fluorescent powder; and

[0015] an electric rotary valve provided between the fluorescent powder bin and a bag inlet flue of the bag-type dust collector, the electric rotary valve being started and releasing the fluorescent powder when the dust concentration detected by the dust detector is higher than the preset value.

[0016] As a preferred scheme, the fluorescent feeding mechanism further comprises:

[0017] a safety door provided at a top end of the fluorescent powder bin, the safety door being used for relieving pressure of the fluorescent powder bin to ensure that the pressure in the fluorescent powder bin is within a preset threshold;

[0018] a level meter provided on the fluorescent powder bin, the level meter being used for monitoring a level of the fluorescent powder bin; and

[0019] a plug valve provided between the fluorescent powder bin and the electric rotary valve, the plug valve being used for isolating the electric rotary valve.

[0020] As a preferred scheme, a single release duration of the electric rotary valve after being started is 10-20 min.

[0021] As a preferred scheme, a single fluorescent powder release amount of the electric rotary valve after being started is calculated according to 4.5 g-6 g of fluorescent powder per square meter of unit filtration area of the bag-type dust collector.

[0022] As a preferred scheme, the fluorescent camera is provided at a top corner of the flue gas countercurrent side in the clean gas chamber.

[0023] As a preferred scheme, the fluorescent camera comprises:

[0024] a rotary camera;

[0025] a fluorescent lamp provided above the rotary camera, and an angle of the fluorescent lamp being parallel to an angle of the rotary camera, so that light of the fluorescent lamp covers the clean gas chamber; and

[0026] A temperature-resistant glass cover surrounds the fluorescent lamp and the rotating camera to protect the fluorescent lamp and the rotating camera.

[0027] In addition, the application also provides a cloth bag dust collector comprising the cloth bag leak detection device.

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

[0029] A dust detector is arranged at the outlet of the cloth bag dust collector, a fluorescent feeding mechanism is arranged at the inlet of the cloth bag dust collector, and a fluorescent camera is arranged at each clean air chamber; once the dust concentration at the outlet of the cloth bag dust collector exceeds the standard, the fluorescent powder is added into the flue at the inlet of the cloth bag, and the fluorescent camera at each clean air chamber is started to monitor the chamber, so that the leak point position can be accurately determined, and the cloth bag of the leaking clean air chamber can be cleaned and replaced in time. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained on the basis of these drawings without creative labor.

[0031] The structures, proportions, sizes, etc. shown in the drawings of the present application are only used to cooperate with the content disclosed in the specification, to enable those skilled in the art to understand and read, and are not used to limit the implementation conditions of the present application, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0032] Figure 1 is a structural schematic diagram of the cloth bag leak detection device in the embodiment of the present application;

[0033] Figure 2 is a structural schematic diagram of the fluorescent feeding mechanism in the embodiment of the present application;

[0034] Figure 3 is a schematic diagram of the installation position of the fluorescent camera in the embodiment of the present application;

[0035] Figure 4 is a schematic diagram of the installation position of the fluorescent camera in the embodiment of the present application;

[0036] Figure 5 is a structural schematic diagram of the fluorescent camera in the embodiment of the present application; DETAILED DESCRIPTION

[0037] In order to make the person skilled in the art better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0038] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms such as indicates the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices, elements, modules, systems, platforms or devices indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. The following description of the present application is only understood as a description of individual embodiments of the technical scheme of the present application, and other embodiments are not embodied in the following description, but it does not mean that the present application excludes these other embodiments, and the technical scheme of the present application is not limited to the specific implementation described below, and the protection scope of the present application is not limited to only the specific implementation described below. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0039] It should be noted that if the terms "first", "second" and the like appear in the description, claims and above-mentioned drawings of the present application, the description is only used to distinguish similar objects, and does not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a system, product or device including a series of units or modules or modules or components does not have to be limited to those units or modules or modules or components clearly listed, but can include other components not clearly listed or inherent to these systems, products or devices.

[0040] The technical scheme of the present application will be further illustrated below in combination with the drawings and through specific embodiments.

[0041] In some embodiments, as shown in Figure 1 , 3 The present application provides a cloth bag leak detection device for cloth bag dust collector.

[0042] The cloth bag dust collector includes a clean gas chamber 11, a cloth bag outlet flue 12 and a cloth bag inlet flue 13:

[0043] The cloth bag leak detection device is arranged on the cloth bag dust collector, and specifically, the cloth bag leak detection device comprises:

[0044] A dust detector 14 is arranged on the bag outlet flue 12 of the bag filter, and is used to detect the dust concentration at the outlet of the bag filter.

[0045] A fluorescent feeding mechanism 15 is arranged on the bag inlet flue 13 of the bag filter, and is used to feed the fluorescent powder at the bag inlet flue 13.

[0046] A fluorescent camera 16 is arranged in the clean gas chamber 11 of the bag filter, and is used to monitor the fluorescent powder leaked into the clean gas chamber 11 from the bag.

[0047] In some embodiments, the dust detector 14, the fluorescent feeding mechanism 15 and the fluorescent camera are respectively coupled with a DCS control system. The dust concentration detected by the dust detector 14 is displayed on the screen of the DCS control system, and when the dust concentration displayed on the DCS control system is higher than a preset value, the DCS control system issues an alarm and automatically starts the fluorescent feeding mechanism 15 to feed the fluorescent powder, and controls the fluorescent feeding mechanism 15 to automatically shut down after a preset feeding time.

[0048] In some embodiments, as shown in FIG. 1, Figure 2 the fluorescent feeding mechanism 14 includes:

[0049] A fluorescent powder bin 151 is used to store the fluorescent powder, and the volume of the fluorescent powder bin 151 is autonomously set according to the filtering area of the bag. Specifically, the effective volume of the fluorescent powder bin 151 = the fluorescent powder consumption for a single leakage detection x the set leakage detection frequency, and the diameter, height and low limit of the bin are set according to the effective volume of the fluorescent powder bin 151 and the site layout.

[0050] A feeding port 152 is arranged on the fluorescent powder bin 151, and is used to feed the fluorescent powder.

[0051] A safety door 153 is arranged at the top end of the fluorescent powder bin 151, and is used to release the pressure of the fluorescent powder bin 151 to ensure that the pressure in the fluorescent powder bin 151 is within a preset threshold, so that the pressure in the fluorescent powder bin 151 is within a safe range.

[0052] A level meter 154 is arranged on the fluorescent powder bin 151, and is used to monitor the level of the fluorescent powder bin 151. The level meter 154 can display the value on the screen of the DCS control system, and can trigger an alarm of the DCS control system to remind the operator to feed when the level is low.

[0053] The electric rotary valve 154 is arranged between the phosphor powder bin 151 and the bag inlet flue 13 of the bag filter. When the dust concentration detected by the dust detector 14 is higher than the preset value, the electric rotary valve 154 is started and the phosphor powder is discharged. The electric rotary valve 154 controls the discharge of the phosphor powder. The electric rotary valve 154 is also interlocked. When the dust concentration displayed on the DCS control system is higher than the preset value, the program issues an alarm and automatically starts the electric rotary valve. The electric rotary valve is automatically closed after discharging for a period of time. Specifically, about 4.5g-6g of phosphor powder is needed for 1 square meter of filter area during leak detection. The discharge time is determined comprehensively according to the discharge speed and the filter bag area. The single discharge time is 10-20 minutes. The specific time can be determined according to the number of clean gas chambers. The discharge speed is controlled by the electric rotary valve 154.

[0054] The plug valve 155 is arranged between the phosphor powder bin 151 and the electric rotary valve 154. The plug valve 155 is used to isolate the electric rotary valve 154. The plug valve 155 is normally open. The plug valve 155 is closed during maintenance of the electric rotary valve 154.

[0055] In some embodiments, the single discharge time of the electric rotary valve after starting is 10-20 minutes.

[0056] As an example, a bag filter with a total filter area of 10000 square meters is used as an example:

[0057] Single leak detection phosphor powder consumption = 5g / m2x10000m 2 = 50000g;

[0058] 50000g / 20min = 2500g / min≤discharge speed≤50000g / 10min = 5000g / min. The discharge speed is controlled by the rotation speed of the electric rotary valve 154.

[0059] In some embodiments, as shown in Figures 3-4 The fluorescent camera 16 is arranged at the top corner of the flue gas counterflow side in the clean gas chamber 11, so that the influence of dust leakage on the fluorescent camera 16 can be avoided, and the leaked dust can be better monitored.

[0060] In some embodiments, as shown in Figure 5 The fluorescent camera 16 includes:

[0061] The rotating camera 161 is provided with real-time monitoring and playback functions, which can be checked by operators and maintenance personnel at any time;

[0062] A fluorescent lamp 162 is arranged above the rotating camera 161, and the angle of the fluorescent lamp 162 is parallel to the angle of the rotating camera 161, so that the light of the fluorescent lamp 162 covers the clean chamber 11, and the fluorescent powder leaking into the clean chamber 11 can be better found to confirm the leakage point.

[0063] A temperature-resistant glass cover 163 surrounds the fluorescent lamp 162 and the rotating camera 161 to protect the fluorescent lamp 162 and the rotating camera 161.

[0064] In addition, the application also provides a cloth bag dust collector comprising the cloth bag leakage detection device.

[0065] In some embodiments, the cloth bag dust collector leakage detection process is as follows:

[0066] (1) The data of the cloth bag dust collector outlet dust detector 14 is abnormal, and the DCS control system issues a high dust content alarm;

[0067] (2) The program starts the electric rotating valve 154, and the fluorescent powder starts to be discharged;

[0068] (3) After the running personnel check and confirm the high dust alarm on the DCS control system screen, the camera interface of the clean chamber 11 is opened synchronously to detect the leakage, the leakage clean chamber is recorded after confirming the leakage point, the DCS control system screen controls the isolation of the leakage clean chamber, and the maintenance personnel are notified to clean and replace the cloth bag of the leakage clean chamber; after the maintenance is completed, the cloth bag dust collector leakage detection device is put into operation again.

[0069] The technical features of the above embodiments can be combined in any way. In order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0070] The above embodiments only express several implementation manners of the application, and are only used to illustrate the technical solutions of the application, but not to limit the application; although the application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application; for those skilled in the art, without departing from the concept of the application, some modifications and improvements can be made, which are all within the protection scope of the application.

Claims

1. A bag leak hunting device for bag leak hunting of a bag filter, characterized by, The bag leak detection device comprises: a dust detector arranged on a bag outlet flue of the bag filter, the dust detector being configured to detect dust concentration at the bag filter outlet; a fluorescent material feeding mechanism arranged on a bag inlet flue of the bag filter, the fluorescent material feeding mechanism being configured to feed fluorescent powder at the bag inlet flue; and a fluorescent camera arranged in a clean gas chamber of the bag filter, the fluorescent camera being configured to monitor fluorescent powder leaked into the clean gas chamber from the bag.

2. The bag leak detection device according to claim 1, wherein: the dust detector, the fluorescent material feeding mechanism and the fluorescent camera are respectively coupled to a DCS control system.

3. The bag leak detection device according to claim 2, wherein: the dust concentration detected by the dust detector is displayed on a screen of the DCS control system, and when the dust concentration displayed on the DCS control system is higher than a preset value, the DCS control system sends an alarm and automatically starts the fluorescent material feeding mechanism to feed fluorescent powder, and controls the fluorescent material feeding mechanism to automatically stop after a preset feeding time. The fluorescent material feeding mechanism comprises:

4. The bag leak hunting device according to claim 1, characterized in that, a fluorescent powder bin configured to store fluorescent powder; a feeding port arranged on the fluorescent powder bin, the feeding port being configured to feed fluorescent powder; and an electric rotary valve arranged between the fluorescent powder bin and the bag inlet flue of the bag filter, the electric rotary valve being configured to start and feed fluorescent powder when the dust concentration detected by the dust detector is higher than the preset value. The fluorescent material feeding mechanism further comprises:

5. The bag leak hunting device as claimed in claim 4, wherein a safety door arranged at a top end of the fluorescent powder bin, the safety door being configured to release pressure of the fluorescent powder bin to ensure that the pressure in the fluorescent powder bin is within a preset threshold; a level meter arranged on the fluorescent powder bin, the level meter being configured to monitor a level of the fluorescent powder bin; and a plug valve arranged between the fluorescent powder bin and the electric rotary valve, the plug valve being configured to isolate the electric rotary valve.

6. The bag leak detection device according to claim 4, wherein: a single feeding time of the electric rotary valve after starting is 10-20 minutes.

7. The bag leak detection device according to claim 4, wherein: a single fluorescent powder feeding amount of the electric rotary valve after starting is calculated according to 4.5g-6g of fluorescent powder per square meter of filter area of the bag filter.

8. The bag leak detection device according to claim 1, wherein: the fluorescent camera is arranged at a top corner of a backflow side of the clean gas chamber. The fluorescent camera comprises:

9. The bag leak hunting device according to claim 1 or 8, characterized in that a rotary camera; a fluorescent lamp arranged above the rotary camera, an angle of the fluorescent lamp being parallel to an angle of the rotary camera, so that light of the fluorescent lamp covers the clean gas chamber; and a temperature-resistant glass cover surrounding the fluorescent lamp and the rotary camera to protect the fluorescent lamp and the rotary camera. The bag leak detection device according to any one of claims 1-9.

10. A baghouse characterized by ​

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