Fault detection device for blowing system of bag-type dust collector of boiler

Abstract

The utility model discloses a boiler bag-type dust collector blowing system fault detection device which comprises a first supporting frame, an electromagnetic valve is arranged on the outer wall of the first supporting frame, a detection assembly used for detecting faults of a boiler bag-type dust collector blowing system is arranged at one end of the electromagnetic valve, and the detection assembly comprises a blowing valve cover. A blowing valve cover is arranged at one end of the first support frame, an electromagnetic valve is arranged at the other end of the first support frame, a hose is arranged at the joint of the blowing valve cover and the electromagnetic valve, a blowing air source is arranged at the other end of the electromagnetic valve, an air bag is arranged in the middle of the first support frame, and a plurality of filter bags are arranged at the bottom of the air bag. In other words, the electromagnetic valve is not connected with the blowing valve body through a bolt, and the hose is connected with the electromagnetic valve and the blowing valve cover through the air source pipe connector, so that the influence of vibration in the blowing process is eliminated, and the problems of air leakage and noise caused by looseness of a fixing bolt are solved.

Description

Technical Field

[0001] The utility model relates to the field of boiler flue gas dust removal in thermal power plants, in particular to a boiler bag dust collector injection system fault detection device. Background Art

[0002] The boiler bag filter is a common industrial equipment used to remove particulate matter and solid pollutants from boiler flue gas. A pulse jet device is installed inside the boiler bag filter.

[0003] The pulse injection device adopts an integrated installation of the solenoid valve and the injection valve. During the operation of the pulse injection device of the boiler bag dust collector, there will be leakage at the joint surface of the injection valve and the solenoid valve. The reason for the leakage is that the instantaneous pressure of the injection valve increases when it is actuated, and the action frequency is high, resulting in large vibration. The violent vibration generated during the injection will cause a series of problems. The fixing bolts of the injection valve body and the solenoid valve body are broken, the air source pipe joints are loose, and the solenoid valve socket falls off. The contact surface gap between the solenoid valve and the injection valve becomes larger, and the gas used by the solenoid valve controller will leak from the contact surface. At the same time, it will produce friction with the contact surface and emit sharp, harsh and high-frequency noise. Therefore, it is necessary to design a boiler bag dust collector injection system fault detection device to solve this problem. Utility Model Content

[0004] The utility model aims to provide a boiler bag filter injection system fault detection device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a boiler bag dust collector injection system fault detection device, comprising a first support frame, an outer wall of the first support frame is provided with a solenoid valve, one end of the solenoid valve is provided with a detection component for detecting a fault in the boiler bag dust collector injection system, the detection component comprises a injection valve cover, a hose is provided at the connection between the injection valve cover and the solenoid valve, and a injection gas source is provided at the other end of the solenoid valve.

[0006] Preferably, an air bag is arranged in the middle of the first support frame, a plurality of filter bags are arranged at the bottom of the air bag, and a second support frame for supporting the filter bags is arranged on the outer walls of the plurality of filter bags.

[0007] Preferably, a connecting pipe for conveying compressed air is provided at the end of the blowing air source.

[0008] Preferably, an air path module is provided at the connection between the solenoid valve and the hose.

[0009] Preferably, a fixing channel steel for fixing the first supporting frame is provided on the outer wall of the first supporting frame and located at the bottom of the solenoid valve.

[0010] Preferably, a pulse valve is provided at the bottom of the valve cover of the blowing valve and on the side of the air bag.

[0011] Preferably, a bolt hole for installing a first support frame bolt is provided in the middle of the fixing channel steel.

[0012] Technical effects and advantages of the utility model:

[0013] The utility model utilizes the mechanism design of the detection component to install the spray valve body and the electromagnetic valve separately and connect them through a hose, that is, the electromagnetic valve and the spray valve body are not connected by bolts, and the hose and the electromagnetic valve and the spray valve cover are respectively connected by air source pipe joints, thereby eliminating the influence of vibration during the spraying process and solving the problem of air leakage and noise caused by loose fixing bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the spray assembly of the utility model.

[0016] Figure 3 This is a schematic diagram of the filter bag structure of the utility model.

[0017] In the figure: 1. first support frame; 2. air path module; 3. fixed channel steel; 301, bolt hole; 4. injection valve cover; 5. pulse valve; 6. air bag; 7. filter bag; 8. hose; 9. solenoid valve; 10. second support frame; 11. injection air source; 12. connecting pipe. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] The utility model provides Figure 1-3 A boiler bag dust collector injection system fault detection device shown includes a first support frame 1, an outer wall of the first support frame 1 is provided with a solenoid valve 9, one end of the solenoid valve 9 is provided with a detection component for detecting a boiler bag dust collector injection system fault, the detection component includes a injection valve cover 4, a hose 8 is provided at the connection between the injection valve cover 4 and the solenoid valve 9, and the other end of the solenoid valve 9 is provided with a injection gas source 11.

[0020] It should be noted that the hose 8 is connected to the solenoid valve 9 and the spray valve cover 4 respectively with the connector of the spray gas source 11, so as to eliminate the influence of vibration during the spraying process, solve the leakage and noise caused by loosening of the fixing bolts, and the spray valve cover 4 is internally connected to the 1 / 4NPT connector.

[0021] The valve cover 4 of the spray valve is connected to the solenoid valve 9 by a hose 8. The original air inlet is used on one side of the valve cover 4 of the spray valve. The original air inlet is enlarged before installation, so that the air used by the solenoid valve 9 controller can increase the effective area of ​​the diaphragm gasket when entering the valve body of the spray valve through the valve cover 4 of the spray valve, and reduce the pressure per unit area, thereby reducing the loss of the diaphragm gasket caused by high-speed airflow when the spray valve is actuated, increasing the service life of the diaphragm gasket and enhancing the reliability of normal use of the spray valve.

[0022] Specifically, an air bag 6 is arranged in the middle of the first support frame 1 , a plurality of filter bags 7 are arranged at the bottom of the air bag 6 , and a second support frame 10 for supporting the filter bags 7 is arranged on the outer walls of the plurality of filter bags 7 .

[0023] It should be noted that the air bag 6 is a device for storing compressed air from the inside of the blowing air source 11, and the filter bag 7 is a filter medium located inside the bag filter. They are usually made of fiber materials, forming a series of densely arranged bag-like structures. Dust and particulate matter are captured when passing through the bag, and clean air is discharged through the top of the filter bag 7.

[0024] A plurality of intervals are arranged in the middle of the second support frame 10 , and such a design is used to support a plurality of filter bags 7 .

[0025] Furthermore, a connecting pipe 12 for conveying compressed air is provided at the end of the blowing air source 11 .

[0026] It should be noted that the pulse jet device of the bag filter usually uses compressed air as the jet air source 11. Compressed air is a gas generated by compressing atmospheric air. The compressed air is used to clean the dust and particulate matter on the surface of the filter bag 7. In order to generate compressed air, the bag filter is usually equipped with an air compressor. The air compressor compresses the atmospheric air by mechanical or power drive to reduce its volume and thus increase its pressure.

[0027] Furthermore, a gas path module 2 is provided at the connection between the solenoid valve 9 and the hose 8 .

[0028] It should be noted that the air circuit module 2 is designed to achieve pulse jetting, and dust will accumulate on the surface of the filter bag 7 in the bag filter, affecting the dust removal effect. The air circuit module 2 of the pulse jet device controls the pulse valve 5 to release compressed air to the filter bag 7 in the form of high-speed jet, generating a shock wave to cause the accumulated dust to fall off, thereby achieving a dust removal effect.

[0029] Furthermore, a pulse valve 5 is provided at the bottom of the injection valve cover 4 and on the side of the air bag 6 .

[0030] It should be noted that the pulse valve 5 is used to control the inlet and outlet of the compressed air generated by the spraying air source 11, and is a key component for realizing the pulse spraying operation. Its main function is to open or close the air circuit and control the release of the air flow in the spraying pipeline. The air bag 6 is connected between the pulse valve 5 and the filter bag 7 and is used as an air storage chamber. When the pulse valve 5 is opened, the air bag 6 releases compressed air and sprays the pulse airflow to the filter bag 7 to clean the dust therein. Once the pulse spraying is completed, the air bag 6 can be filled with compressed air again for the next cleaning operation.

[0031] Specifically, a fixing channel steel 3 for fixing the first supporting frame 1 is provided on the outer wall of the first supporting frame 1 and located at the bottom of the solenoid valve 9 .

[0032] It should be noted that the fixing channel steel 3 is designed to fix the first support frame 1 so as to better fix the first support frame 1 .

[0033] Furthermore, a bolt hole 301 for installing the bolts of the first support frame 1 is opened in the middle of the fixed channel steel 3.

[0034] It should be noted that in order to solve the problem that when the fixing bolt of the first support frame 1 breaks, the bolt hole 301 is easily scratched and damaged and cannot be repaired, a gap of not less than 10 mm is cut on the bolt hole 301 column and nuts are used to tighten it directly to solve the problem of loose sealing and extend the service life of the equipment.

[0035] During actual use, the compressed air in the spray air source 11 is transported to the position of the solenoid valve 9, the solenoid valve 9 and the spray valve cover 4 are connected by a hose 8, the solenoid valve 9 is opened, and the opening of the spray valve cover 4 is controlled. A pulse valve 5 is provided at the bottom of the spray valve cover 4, and the air bag 6 is connected between the pulse valve 5 and the filter bag 7 and is used as an air storage chamber. When the pulse valve 5 is opened, the air bag 6 releases compressed air and sprays the pulse airflow to the filter bag 7 to clean the dust therein.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A boiler bag filter spray system fault detection device, comprising a first support frame (1), wherein an outer wall of the first support frame (1) is provided with a solenoid valve (9), characterized in that: A detection component for detecting a fault in a boiler bag filter spray system is provided at one end of the solenoid valve (9), the detection component comprising a spray valve cover (4), a hose (8) being provided at the connection between the spray valve cover (4) and the solenoid valve (9), and a spray gas source (11) being provided at the other end of the solenoid valve (9).

2. A boiler bag filter injection system fault detection device according to claim 1, characterized in that: An air bag (6) is arranged in the middle of the first support frame (1), a plurality of filter bags (7) are arranged at the bottom of the air bag (6), and a second support frame (10) for supporting the filter bags (7) is arranged on the outer walls of the plurality of filter bags (7).

3. A boiler bag filter spray system fault detection device according to claim 1, characterized in that: A connecting pipe (12) for conveying compressed air is provided at the end of the blowing air source (11).

4. A boiler bag filter injection system fault detection device according to claim 1, characterized in that: An air path module (2) is provided at the connection between the solenoid valve (9) and the hose (8).

5. A boiler bag filter injection system fault detection device according to claim 1, characterized in that: A fixing channel steel (3) for fixing the first supporting frame (1) is provided on the outer wall of the first supporting frame (1) and located at the bottom of the solenoid valve (9).

6. A boiler bag filter spray system fault detection device according to claim 1, characterized in that: A pulse valve (5) is provided at the bottom of the injection valve cover (4) and on the side of the air bag (6).

7. A boiler bag filter spray system fault detection device according to claim 5, characterized in that: A bolt hole (301) for mounting a bolt of the first support frame (1) is provided in the middle of the fixing channel steel (3).

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