Bag Dust Removal Leak Detector Model: HDLBJ-7
Bag dust leak detectors are mainly divided into two categories: the HMDM series and the HMTM series.
Bag dust leakage tester is a device used to check if the filter bags of a dust collector are operating normally, mainly for detecting the damage of the filter bags in the dust collector to ensure the smooth operation of the system and effective dust collection.
Principle：
In a flowing powder, particles collide with each other and with the tube walls or filter bags, generating static charges due to friction and impact, creating an electrostatic field. The changes in this electrostatic field reflect the variations in dust content. The leak detector measures these changes in the electrostatic field to determine if the filter bag dust removal system is operating correctly. When a filter bag bursts, the dust content in the gas-solid two-phase flow within the pipeline increases, along with an enhancement in the electrostatic field intensity.
This set consists mainly of three parts: ① sensors (signal collection section), ② transmitters (signal processing section), and ③ signal transmission.The sensor's function is to convert the electrostatic field formed by the flow of powders into an electrical signal by electrostatic induction, and then transmit this signal to the transmitter via a cable.
The transmitter is composed of a multi-channel board, with its output being an analog current and audio-visual display that varies with the measured powder content. The new meter outputs a 4-20mA current signal, alarm switch quantity, or data signals via the RS485 interface. Under normal operation (i.e., no bag breakage, powder content not exceeding the limit),HDLBJ-7TypeThe table indicates green lights on and red lights off, and outputs the simulated current values. The current values output by each channel are measured by an automatic patrol and manual selection system composed of a single-chip microcomputer. The device can operate in either "Automatic Patrol" or "Manual Selection" modes as required. The "Box Selection" button serves as a switch to toggle between "Automatic" and "Manual" modes, and also as a switch to switch between box measurements in manual mode.
Features：
With the advancement of industrial automation and increasing environmental protection efforts, the monitoring of industrial dust has become increasingly stringent. Our developed bag dust collector online monitoring instrument is an effective device for monitoring the integrity of the dust collector bags and the dust content in each chamber in real-time. It can accurately and promptly detect and prevent the emission of harmful dust and reduce the loss of valuable powder, aiming to ensure the safe operation of the main equipment and minimize economic losses due to product damage. It also provides instant feedback on the operational status of each dust collector chamber.
The instrument is widely applicable for leak detection in dust removal systems in metallurgy, electricity, chemicals, food processing, building materials, and wood processing industries. When used for leak detection in the dry dust removal system of large-scale thermal power generators, it can prevent wear on the negative pressure fan due to the破裂 of the filter bags in the dust removal equipment, as well as prevent excessive dust emissions and air pollution caused by the breakdown of the filter bags after the separation of dust and powder in positive pressure dust removal. Particularly in the iron smelting process, it is especially effective in dealing with highly toxic substances (COConcentration approximates30%Bag dust collector leak detection for blast furnace gas with positive pressure operation, holds special practical value. Over the past decade, from small to large furnaces (2500M³）,From a trial installation to multiple installations (some manufacturers have installed multiple units). After production tests by numerous manufacturers across the country, it demonstrates sensitive response, reliable operation, minimal maintenance, strong practicality, and can meet production needs. It can replace manual leak detection and can display concentrations in real-time. It's a first in China, offering significant economic, social, and environmental benefits, with great potential for promotion and application.
HDLBJ-7TypeBag dust leakage detectors come in two main series; one series features a single instrument capable of simultaneous online detection.8Unit10Piece(s).12Operating conditions of a bag dust collector's housing, this series of instruments features computerized patrol inspection, over-limit indicator lights, sound alarms, and4-20MASimulated current indication and switch quantity output. Another series not only monitors the operating conditions of the dust collector housing in real-time but also is equipped with a main pipe concentration meter, allowing for continuous online monitoring of the dust concentration in the main pipe. This series of instruments displays the dust concentration values of each bag dust collector housing and the main pipe on a liquid crystal display, and features dust over-limit alarms and sensor failure alarms; it also provides output4—20mACurrent,RS485Interface, Switched Output (Passive)
HDLBJ-7TypeSeries instruments feature simple structure, high sensitivity, accurate and timely signals, safe and reliable operation, easy installation, minimal maintenance, and a wide application range (various types of dust, positive and negative pressure systems, large particle size range), making them practical online dust monitoring devices for various industrial enterprises.
Maintenance and care:
The maintenance and care of the bag dust leak tester are relatively simple, primarily involving regular checks of the probe's cleanliness and the equipment's operational status. Due to the use of high sensitivity and anti-interference technology, the equipment can operate stably over extended periods, reducing the need for manual intervention and maintenance costs.
Technical Specifications：。
★Measurement Range: Dust Concentration0-1000mg/m3。
★Tested Tube Diameter0.1-3m。
★ Tested Particle Size1-80μm
★ Sensor Measurement Point Temperature Allowance:<260℃。
★Sensor Measurement Point Pressure Range:2。0Mpa。
★SensorInsertion Depth:300mm (total pipe size 1200mm).
★Instrument operating environment temperature:-30-80℃。
★Transmitter enclosure dimensions (W x H x D):430×530×200㎜
Wuhan Huade Lin Technology Co., Ltd. specializes in the production of various flowmeters, level gauges, transmitters, bag dust collector leak detectors, dust concentration meters, and flowmeters for solids such as dust and powder.
Bag Leak Detector Installation Case
