Monitoring device for ash discharging state of ash bucket

Abstract

The utility model relates to a safety monitoring device, in particular to a monitoring device for the ash discharging state of an ash bucket, and aims to solve the problems of low reliability and insufficient monitoring precision of the conventional ash level high switching value alarm device. The sensor comprises a sensor outer tube, an electrical shell connected with one end of the sensor outer tube, a sensor circuit and a measurement induction antenna, a connecting hole is formed in the side face of the dust discharging pipeline, and a cylindrical sensor mounting base is arranged outside the connecting hole. The sensor outer tube is connected with the sensor mounting base; an insulating material is arranged in the sensor outer pipe; an insulating wear-resistant sleeve is arranged at one end, close to the ash discharging pipeline, of the sensor outer pipe; the output end of the sensor circuit is electrically connected with the data processing module; one end of the measurement induction antenna is electrically connected with the input end of the sensor circuit, and the other end of the measurement induction antenna penetrates through the interior of the sensor outer pipe and is attached to the inner end face, close to the ash discharging pipeline, of the sensor outer pipe.

Description

Technical Field

[0001] The utility model relates to a safety monitoring device, in particular to a monitoring device for the ash discharging state of a hopper. Background Art

[0002] At present, in a dust collector (including an electrostatic precipitator and an electrostatic bag precipitator) system, as a dust collection and temporary storage device, the ash conveying process of the hopper is in an intermittent operation state. When the ash in the hopper reaches a certain ash level height, the system regularly opens the ash discharge valve and conveys the ash in the hopper to a remote ash bunker by means of pneumatic conveying. The ash stays in the hopper for a certain period of time. Due to the high viscosity of the dust itself and the influence of humidity and ammonium bisulfate generated during the denitrification process in the flue gas, it is extremely easy to cause poor ash flow during ash discharge from the hopper. Especially in the volume contraction structure at the lower part of the hopper, an arching phenomenon occurs, resulting in incomplete ash discharge or blockage of the hopper.

[0003] The existing technology mostly adopts a high ash level switch alarm device. However, due to the high viscosity of the ash, the ash easily interacts with the sensor of the alarm device, resulting in low reliability and insufficient monitoring accuracy. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems of low reliability and insufficient monitoring accuracy existing in the existing high ash level switch alarm device, and to provide a monitoring device for the ash discharging state of a hopper.

[0005] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0006] A monitoring device for the ash discharging state of a hopper, which is characterized in that:

[0007] It includes a sensor outer tube, an electrical housing connected to one end of the sensor outer tube, a sensor circuit arranged in the electrical housing, and a measurement induction antenna;

[0008] A connection hole is arranged on the side of the ash discharge pipe, and a cylindrical sensor installation base is arranged outside the connection hole; the other end of the sensor outer tube is connected to the sensor installation base, and the end face of the other end of the sensor outer tube is flush with the inner wall of the ash discharge pipe;

[0009] Insulating materials are arranged in the sensor outer tube, and an insulating wear-resistant sleeve is sleeved on the outer side of one end of the sensor outer tube close to the ash discharge pipe; one end of the measurement induction antenna passes through the inside of the sensor outer tube, and the end part is attached to the inner end face of the sensor outer tube close to the ash discharge pipe for real-time detection of the passive mass alternating current induction electrical signal in the ash discharge pipe;

[0010] The input end of the sensor circuit is connected to the other end of the measurement induction antenna, which is used to process the passive mass alternating induction electrical signal in the ash discharge pipeline. The output end of the sensor circuit is electrically connected to an external data processing module.

[0011] Furthermore, the shape of the measurement induction antenna near the end of the ash discharge pipeline is wavy or spiral.

[0012] Furthermore, the insulating material inside the outer tube of the sensor is divided into two sections. One section near the ash discharge pipeline is an insulating column with a second through-hole in the middle, and the other section far from the ash discharge pipeline is powdered insulating filler; the second through-hole is used for the measurement induction antenna to pass through.

[0013] Furthermore, a flange is provided on the outer side wall of the outer tube of the sensor, and it is flange-connected to the end of the sensor mounting base on the side far from the ash discharge pipeline.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. For the monitoring device for the ash discharge state of the ash hopper provided by the present utility model, the end face of the outer tube of the sensor near the ash discharge pipeline is flush with the inner wall of the ash discharge pipeline, which can enable the measurement induction antenna inside it to monitor the ash discharge state in real time without affecting the flow of ash in the ash discharge pipeline; an insulating wear-resistant sleeve is provided, and the insulating wear-resistant sleeve can reduce the wear of the outer tube of the sensor.

[0016] 2. For the monitoring device for the ash discharge state of the ash hopper provided by the present utility model, the shape of the measurement induction antenna near the end of the ash discharge pipeline is wavy or spiral, which can increase the contact area and improve the measurement accuracy.

[0017] 3. For the monitoring device for the ash discharge state of the ash hopper provided by the present utility model, the outer tube of the sensor is flange-connected to the end of the sensor mounting base on the side far from the ash discharge pipeline, with strong stability and high reliability.

[0018] 4. For the monitoring device for the ash discharge state of the ash hopper provided by the present utility model, it is simple to assemble, has strong versatility and good safety. Description of the Drawings

[0019] Figure 1 It is a sectional view of the embodiment of the monitoring device for the ash discharge state of the ash hopper of the present utility model, where "↓" indicates the ash flow direction;

[0020] Figure 2 It is a schematic diagram of the end of the measurement induction antenna being wavy in the embodiment of the present utility model;

[0021] Figure 3 It is a schematic diagram of the end of the measurement induction antenna being spiral in the embodiment of the present utility model;

[0022] Figure 4 This is a schematic three-dimensional structure diagram of an embodiment of a monitoring device for the ash discharge state of a hopper in an embodiment of the present utility model;

[0023] Figure 5 This is a schematic assembly structure diagram of an embodiment of a monitoring device for the ash discharge state of a hopper in the present utility model in the ash discharge pipeline.

[0024] Explanation of reference numerals:

[0025] 1 - Ash discharge pipeline, 11 - Connection hole; 2 - Sensor mounting base; 3 - Insulating wear-resistant sleeve; 4 - Insulating column, 41 - Second through hole; 5 - Sensor outer tube; 6 - Insulating filler; 7 - Measuring induction antenna; 8 - Electrical housing; 9 - Sensor circuit. Detailed implementation manners

[0026] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] A monitoring device for the ash discharge state of a hopper according to the present utility model, see Figure 1 , Figure 4 , Figure 5 , and includes a sensor outer tube 5, an electrical housing 8 connected to one end of the sensor outer tube 5, a sensor circuit 9 provided in the electrical housing 8, and a measuring induction antenna 7;

[0028] A connection hole 11 is provided on the side of the ash discharge pipeline 1, and a cylindrical sensor mounting base 2 is provided outside the connection hole 11; the other end of the sensor outer tube 5 is connected to the sensor mounting base 2, and the end face of the other end of the sensor outer tube 5 is flush with the inner wall of the ash discharge pipeline 1;

[0029] An insulating material is provided inside the sensor outer tube 5. An insulating wear-resistant sleeve 3 is sleeved on the outside of one end of the sensor outer tube 5 close to the ash discharge pipeline 1, and the insulating wear-resistant sleeve 3 can reduce the wear of the sensor outer tube 5; the insulating material is divided into two sections. One section close to the ash discharge pipeline 1 is an insulating column 4 with a second through hole 41 in the middle, and the section far from the ash discharge pipeline 1 is a powdery insulating filler 6; the second through hole 41 is used for the measuring induction antenna 7 to pass through; one end of the measuring induction antenna 7 passes through the inside of the sensor outer tube 5, and the end is attached to the inner end face of the sensor outer tube 5 close to the ash discharge pipeline 1 for real-time detection of the passive mass alternating current induction electrical signal in the ash discharge pipeline;

[0030] The input end of the sensor circuit 9 is connected to the other end of the measuring induction antenna 7 for processing the passive mass alternating current induction electrical signal in the ash discharge pipeline, and the output end of the sensor circuit 9 is electrically connected to an external data processing module.

[0031] In order to increase the contact area of the end and ensure high-quality signal transmission, the shape of the measuring induction antenna 7 near the end of the dust discharge pipe 1 can be a wave shape (see Figure 2 ) or spiral (see Figure 3 ), or other feasible shapes.

[0032] A flange is provided on the outer side wall of the sensor outer tube 5, and is connected to the end of the sensor mounting base 2 away from the dust removal pipeline 1 through a flange. Such a setting can ensure a tight connection and increase reliability.

[0033] A flange is provided on the outer side wall of the sensor outer tube 5, and is connected to the end of the sensor mounting base 2 away from the dust removal pipeline 1 through a flange. Such a setting can ensure a tight connection and increase reliability.

[0034] In addition, the data processing module can also be connected to an external control device. When the dust unloading is not smooth, the external control device can be linked to the silo wall vibrator of the ash unloading pipeline 1, and the silo wall vibrator starts working to achieve the effect of automatic and thorough dust cleaning.

[0035] In an actual working scenario, a monitoring device for the ash hopper unloading status can be installed on the side of the ash unloading pipe 1. The sensor circuit 9 and the measuring induction antenna 7 cooperate to monitor the ash falling status, and send the monitoring data to an external data processing module, so as to detect ash blockage problems in time.

Claims

1. A monitoring device for the ash discharging state of a hopper, characterized in that: It includes a sensor outer tube (5), an electrical housing (8) connected to one end of the sensor outer tube (5), a sensor circuit (9) arranged in the electrical housing (8), and a measurement induction antenna (7); A connection hole (11) is provided on the side of the ash discharging pipeline (1), and a cylindrical sensor mounting base (2) is provided outside the connection hole (11); the other end of the sensor outer tube (5) is connected to the sensor mounting base (2), and the end face of the other end of the sensor outer tube (5) is flush with the inner wall of the ash discharging pipeline (1); An insulating material is arranged in the sensor outer tube (5), and an insulating wear-resistant sleeve (3) is sleeved on the outer side of one end of the sensor outer tube (5) close to the ash discharging pipeline (1); one end of the measurement induction antenna (7) passes through the inside of the sensor outer tube (5), and the end is attached to the inner end face of the sensor outer tube (5) close to the ash discharging pipeline (1) for real-time detection of the passive mass alternating current induction electrical signal in the ash discharging pipeline; The input end of the sensor circuit (9) is connected to the other end of the measurement induction antenna (7) for processing the passive mass alternating current induction electrical signal in the ash discharging pipeline, and the output end of the sensor circuit (9) is electrically connected to an external data processing module.

2. The monitoring device for the ash discharging state of a hopper according to claim 1, characterized in that: The shape of the measurement induction antenna (7) near the end of the ash discharging pipeline (1) is wavy or spiral.

3. The monitoring device for the ash discharging state of a hopper according to claim 2, characterized in that: The insulating material in the sensor outer tube (5) is divided into two sections. One section close to the ash discharging pipeline (1) is an insulating column (4) with a second through hole (41) in the middle, and the section far from the ash discharging pipeline (1) is powdery insulating filler (6); the second through hole (41) is used for the measurement induction antenna (7) to pass through.

4. The monitoring device for the ash discharging state of a hopper according to claim 3, characterized in that: A flange is provided on the outer side wall of the sensor outer tube (5), and is flange-connected to the end of the sensor mounting base (2) on the side far from the ash discharging pipeline (1).

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