Flameless venting device and method of controlling the same

Abstract

The present application relates to the technical field of flameless pressure relief device, and discloses a flameless explosion relief device and a control method thereof. The device comprises a monitoring module, a valve module and a fire extinguishing module for reducing the intensity of explosion. The monitoring module comprises a connecting pipe connecting the dust collector and the fire extinguishing module, a first monitoring component for monitoring the pressure and temperature in the dust collector and detecting whether there is a spark, and a second monitoring component for monitoring the pressure in the connecting pipe and detecting whether there is a spark. The valve module comprises a plurality of valve components, and the valve module can be switched between a closed state and an open state. When the valve module is in the closed state, all valve components separate the fire extinguishing module and the connecting pipe. When the valve module is in the open state, the valve components move to the external environment, and the fire extinguishing module is connected to the connecting pipe. The design that the valve components in the open state are located in the external environment reduces the maintenance difficulty, and the setting of the monitoring component expands the scene of explosion relief triggering.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flameless pressure relief device, and particularly relates to a flameless pressure relief device and a control method thereof. BACKGROUND

[0002] The flameless pressure relief device is widely used in the dust explosion industry such as metal processing, grain processing and wood processing, and is an important device for effectively reducing the degree and range of accident hazards, especially for dust removal equipment arranged indoors.

[0003] The traditional flameless pressure relief device is mainly composed of a pressure relief sheet and a fire extinguishing module. Only when the pressure inside the dust removal equipment exceeds the opening pressure of the pressure relief sheet, the explosion pressure can be discharged through the fire extinguishing module. It cannot automatically relieve pressure at any pressure condition in the early stage of an accident, and cannot meet the requirement of transforming the public safety management mode to prevention in advance. In addition, since the pressure relief sheet is installed inside the flameless pressure relief device, the entire device needs to be disassembled for replacement, which is time-consuming and laborious, and is not easy to maintain and maintain.

[0004] Therefore, it is necessary to seek a flameless pressure relief device to overcome the shortcomings of the existing device, so as to automatically relieve pressure rapidly under the condition of meeting the set triggering condition in the process of an accident (especially in the early stage of an accident), so as to reduce the harm and consequences of dust explosion accidents. SUMMARY

[0005] The purpose of the present application is to provide a flameless pressure relief device and a control method thereof, so as to reduce the disassembly difficulty of the pressure relief sheet and increase the regulation and control ability of the triggering scene of the flameless pressure relief device.

[0006] To achieve this purpose, the technical scheme adopted by the present application is as follows:

[0007] The flameless pressure relief device is installed in a dust collector and comprises a fire extinguishing module, a monitoring module and a valve module. The fire extinguishing module is used to reduce the explosion intensity when the dust collector explodes. The monitoring module comprises a first monitoring component, a second monitoring component and a connecting pipe connecting the dust collector and the fire extinguishing module. The valve module comprises a plurality of valve components, and the valve module can be switched between a closed state and an open state. When the valve module is in the closed state, all the valve components are spliced with each other and separate the fire extinguishing module and the connecting pipe. When the valve module is in the open state, all the valve components are moved to the external environment, so that the fire extinguishing module is connected to the connecting pipe. The first monitoring component is arranged in the dust collector and is used to monitor the pressure and temperature in the dust collector and detect whether there is a spark or high-temperature particle. The second monitoring component is arranged in the connecting pipe and is used to monitor the pressure in the connecting pipe and detect whether there is a spark or high-temperature particle.

[0008] As a preferred technical solution of the flameless explosion venting device, the first monitoring assembly comprises an explosion-proof pressure detection unit, an explosion-proof spark detection unit and an explosion-proof temperature detection unit, the explosion-proof pressure detection unit is used for monitoring the pressure in the dust collector and calculating the pressure change rate, the explosion-proof spark detection unit is used for detecting whether there is a spark or high-temperature particle in the dust collector, and the explosion-proof temperature detection unit is used for monitoring the temperature in the dust collector and calculating the temperature change rate.

[0009] As a preferred technical solution of the flameless explosion venting device, the second monitoring assembly comprises an explosion-proof pressure detection unit and an explosion-proof spark detection unit, the explosion-proof pressure detection unit is used for monitoring the pressure in the connecting pipe, and the explosion-proof spark detection unit is used for detecting whether there is a spark or high-temperature particle in the connecting pipe.

[0010] As a preferred technical solution of the flameless explosion venting device, the valve assembly comprises an upper valve disc, a lower valve disc and a venting sheet, the upper valve disc is detachably connected with the lower valve disc, and the edge of the venting sheet is clamped between the upper valve disc and the lower valve disc.

[0011] As a preferred technical solution of the flameless explosion venting device, the upper valve disc can move relative to the lower valve disc in a direction perpendicular to the venting sheet.

[0012] As a preferred technical solution of the flameless explosion venting device, the flameless explosion venting device further comprises a control terminal, and the control terminal can control the valve module to switch between the closed state and the open state.

[0013] A flameless explosion venting device control method applied to the flameless explosion venting device, comprising the following steps:

[0014] S10: running the dust collector, so that the valve module is in the closed state;

[0015] S20: monitoring the pressure in the dust collector, the temperature in the dust collector and detecting whether there is a spark or high-temperature particle in the dust collector by using the first monitoring assembly, and calculating the pressure change rate and the temperature change rate in the dust collector;

[0016] S30: judging whether the spark or high-temperature particle can be detected at the same time, whether the pressure in the dust collector exceeds the first threshold value or the pressure change rate exceeds the second threshold value or the temperature exceeds the third threshold value or the temperature change rate exceeds the fourth threshold value, if yes, proceeding to S40, if not, returning to S20;

[0017] S40: switching the valve module to the open state, feeding back the pressure, pressure change rate, temperature and temperature change rate in the dust collector, and issuing an explosion venting alarm;

[0018] S50: monitoring the pressure in the dust collector, the temperature in the dust collector, and detecting whether there is a spark or high-temperature particle in the dust collector, and calculating the pressure change rate and temperature change rate in the dust collector;

[0019] S60: determining whether the condition that the pressure in the dust collector is kept below the first threshold value, the pressure change rate is below the second threshold value, the temperature is below the third threshold value, the temperature change rate is below the fourth threshold value, and no spark or high-temperature particle is detected, reaches a first time, if yes, proceeding to S70, if no, returning to S50;

[0020] S70: switching the valve block to the closed state, and then returning to S20.

[0021] As a preferred technical solution of the flameless explosion venting device control method, the S70 comprises the following detailed steps:

[0022] S71: monitoring the spark or high-temperature particle in the connecting pipe by using the second monitoring assembly;

[0023] S72: determining whether the condition that no spark or high-temperature particle is detected in the connecting pipe reaches a second time, if yes, issuing an explosion venting completion information, then switching the valve block to the closed state, and finally returning to S20; if no, returning to S71.

[0024] As a preferred technical solution of the flameless explosion venting device control method, it further comprises the following steps: monitoring the pressure in the connecting pipe by using the second monitoring assembly, determining whether the pressure in the connecting pipe is higher than a fifth threshold value, if yes, issuing an alarm information; if no, continuing to monitor the pressure in the connecting pipe.

[0025] As a preferred technical solution of the flameless explosion venting device control method, the flameless explosion venting device further comprises a timing unit for timing, and the flameless explosion venting device control method comprises the following steps: reading the timing time of the timing unit, determining whether the timing time reaches a third time, if yes, feeding back the pressure, pressure change rate, temperature and temperature change rate in the dust collector, then resetting the timing time of the timing unit and re-timing, and re-starting to read the timing time of the timing unit; if no, continuing to read the timing time of the timing unit.

[0026] The beneficial effects of the present application are:

[0027] The flameless explosion venting device realizes real-time monitoring of the pressure and temperature in the dust remover by setting the first monitoring assembly, thereby calculating and counting the pressure change rate and temperature change rate in the dust remover, and also completing detection of whether sparks or high-temperature particles exist in the dust remover. The second monitoring assembly is set to complete detection of whether sparks or high-temperature particles exist in the connecting pipe, and the progress of explosion venting is judged in combination with the detection results of sparks or high-temperature particles in the dust remover and the detection results of sparks or high-temperature particles in the connecting pipe. After no sparks or high-temperature particles are monitored in both places within a certain time, it is determined that explosion venting is completed. The setting of the second monitoring assembly also realizes real-time monitoring of the pressure in the connecting pipe, thereby judging whether the valve disc module is completely closed and whether the valve disc assembly is closed in place. The design that the valve disc assembly can move to the external environment reduces the difficulty of maintenance of the valve disc assembly by the staff, does not need to be disassembled as a whole, thereby improving the maintenance efficiency and reducing the risk in the maintenance process. The above improvements enable the flameless explosion venting device to be directly installed in cooperation with the existing dust remover, thereby improving the stability, reliability and effectiveness of the entire dust removal system.

[0028] The flameless explosion venting device control method realizes analysis of the key parameters in the dust remover by real-time monitoring of the pressure, pressure change rate, temperature, temperature change rate and information of sparks or high-temperature particles in the dust remover, thereby being able to discover abnormal information in the dust remover in time and automatically venting according to the judgment result. The flameless explosion venting device designed in the above manner does not need to reach the condition that the pressure in the dust remover meets the opening pressure of the explosion venting piece in the conventional setting, the triggering condition is more flexible, the monitoring parameters are more abundant, and thus the flameless explosion venting device can automatically vent when reaching the preset pressure at the initial stage of an accident, effectively reducing the degree of harm and the influence range of the explosion accident, and reducing the harm and consequences of the dust explosion accident. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a structural schematic view of the flameless explosion venting device provided by the embodiment of the present application;

[0030] Figure 2 is a side view of the flameless explosion venting device provided by the embodiment of the present application;

[0031] Figure 3 is Figure 2 is a cross-sectional view of the A-A plane in FIG. 8;

[0032] Figure 4 is a structural schematic view of the valve disc assembly provided by the embodiment of the present application;

[0033] Figure 5 is a structural schematic view of the lower valve disc provided by the embodiment of the present application;

[0034] Figure 6 is a structural schematic diagram of the upper valve provided by the embodiment of the present application;

[0035] Figure 7 is a flow chart of the control method of the flameless explosion venting device provided by the embodiment of the present application;

[0036] Figure 8 is a working flow chart of the second monitoring assembly provided by the embodiment of the present application;

[0037] Figure 9 is a working flow chart of the timing unit provided by the embodiment of the present application.

[0038] in the figure:

[0039] 110, valve assembly; 111, upper valve; 112, lower valve; 113, locking pin; 114, closing approach unit; 115, opening approach unit; 116, positioning block; 117, positioning groove; 118, valve gear; 119, valve through hole; 170, explosion venting sheet; 180, gear ring; 190, rotating shaft;

[0040] 200, fire extinguishing module; 210, module main body; 220, explosion venting net; 230, net frame; 240, first sealing ring; 250, first locking member; 260, variable diameter pipe; 270, second sealing ring; 280, first flange; 290, second locking member;

[0041] 300, monitoring module; 310, connecting pipe; 311, second flange; 312, third flange; 320, explosion-proof pressure detection unit; 330, explosion-proof spark detection unit; 340, mounting plate; 350, execution assembly; 360, driving gear; 370, gasket; 380, transfer gear; 390, transfer shaft. DETAILED DESCRIPTION

[0042] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0043] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0046] like Figures 1-6As shown, this embodiment provides a flameless explosion relief device, including a fire extinguishing module 200, a monitoring module 300, and a valve module. The fire extinguishing module 200 is used to reduce the explosion intensity when the dust collector explodes. The monitoring module 300 includes a first monitoring component, a second monitoring component, and a connecting pipe 310 connecting the dust collector and the fire extinguishing module 200. The valve module includes multiple valve components 110, which can switch between a closed state and an open state. When the valve module is in the closed state, all valve components 110 are connected to each other and separate the fire extinguishing module 200 and the connecting pipe 310. When the valve module is in the open state, all valve components 110 move to the external environment, allowing the fire extinguishing module 200 to connect to the connecting pipe 310. The first monitoring component is located inside the dust collector and is used to monitor the pressure and temperature inside the dust collector and detect the presence of sparks or high-temperature particles. The second monitoring component is located inside the connecting pipe 310 and is used to monitor the pressure inside the connecting pipe 310 and detect the presence of sparks or high-temperature particles.

[0047] This flameless explosion relief device achieves real-time monitoring of pressure and temperature within the dust collector through a first monitoring component. This allows for the calculation and statistical analysis of the pressure and temperature change rates within the dust collector, as well as the detection of sparks or high-temperature particles. A second monitoring component detects the presence of sparks or high-temperature particles within the connecting pipe 310. Combining the detection results from both the dust collector and connecting pipe 310, the explosion relief process is assessed. Once no sparks or high-temperature particles are detected at either location within a certain timeframe, the explosion relief is considered complete. The second monitoring component also enables real-time monitoring of pressure within the connecting pipe 310, allowing for determination of whether the valve module is fully closed and whether the valve assembly 110 is properly closed. The design of the valve assembly 110, which can be moved to the external environment, reduces the difficulty of maintenance for personnel, eliminating the need for complete disassembly, thereby improving maintenance efficiency and reducing risks during maintenance. These improvements enable the flameless explosion venting device to be directly installed with existing dust collectors, enhancing the stability, reliability, and effectiveness of the entire dust collection system. Specifically, the fire extinguishing module 200 reduces the intensity of the explosion while also preventing the spread of flames.

[0048] In this embodiment, the flameless explosion venting device also includes a control terminal, which can control the valve disc module to switch between a closed state and an open state. This configuration allows operators to manually switch the state of the valve disc module, facilitating the immediate movement of the valve disc assembly 110 to the external environment for inspection or replacement of the explosion venting disc 170. In this embodiment, operators can move the valve disc assembly 110 to the external environment by pressing and holding the state switching button, and then reconnect all valve disc assemblies 110 by pressing and holding the state switching button again.

[0049] Meanwhile, the design that allows the valve module's status to be manually switched by staff also enables staff to use the suction power of the dust removal system to regularly clean the fire extinguishing module 200. The pneumatic cleaning method of the dust removal system can prevent dust from caking and solidifying on the fire extinguishing module 200, further improving the cleaning effect and ensuring the reliability and effectiveness of the fire extinguishing module 200.

[0050] In this embodiment, the first monitoring component includes an explosion-proof pressure detection unit 320, an explosion-proof spark detection unit 330, and an explosion-proof temperature detection unit. The explosion-proof pressure detection unit 320 is used to monitor the pressure inside the dust collector and calculate the rate of pressure change. The explosion-proof spark detection unit 330 is used to detect whether there are sparks or high-temperature particles inside the dust collector. The explosion-proof temperature detection unit is used to monitor the temperature inside the dust collector and calculate the rate of temperature change. The second monitoring component includes an explosion-proof pressure detection unit 320 and an explosion-proof spark detection unit 330. The explosion-proof pressure detection unit 320 is used to monitor the pressure inside the connecting pipe 310, and the explosion-proof spark detection unit 330 is used to detect whether there are sparks or high-temperature particles inside the connecting pipe 310. Specifically, the explosion-proof spark detection unit 330 and the explosion-proof pressure detection unit 320 in the second monitoring component are both installed on the outer wall of the connecting pipe 310. The detection end of the explosion-proof pressure detection unit 320 extends into the connecting pipe 310, and the detection end of the explosion-proof spark detection unit 330 extends into the connecting pipe 310.

[0051] For example, explosion-proof pressure detection units 320 are also installed at the connection between the air inlet duct and the dust collector, and on the side wall of the ash hopper. These explosion-proof pressure detection units 320 are used to monitor the pressure at the corresponding locations and calculate the rate of pressure change. Explosion-proof temperature detection units are also installed on the side wall of the ash hopper. These explosion-proof temperature detection units are used to monitor the temperature at the side wall of the ash hopper and calculate the rate of temperature change.

[0052] Considering that the interior of the connecting pipe 310 differs from that of the dust collector, even if the valve assembly 110 is not completely sealed or the vent 170 is not properly installed, no pressure jump will occur. Taking these factors into account, it is unnecessary to calculate the pressure change rate within the connecting pipe 310.

[0053] In this embodiment, the flameless explosion relief device also includes an alarm module and a communication module. The communication module is used to collect and organize the pressure, pressure change rate, temperature, and temperature change rate feedback from various parts of the flameless explosion relief device to achieve a direct understanding of the operational information of the device. The alarm module is communicatively connected to the first monitoring component and the second monitoring component. When either the first or second monitoring component detects an explosion relief requirement within the dust collector or an abnormal operating condition of the connecting pipe 310, it can promptly send an alarm signal. One alarm signal sends alarm information to safety management personnel via the communication terminal, and the other alarm signal sends an alarm to the alarm module to remind staff to handle the situation promptly and evacuate personnel. Specifically, the alarm module includes a buzzer that sounds when an alarm is triggered and / or an indicator light that flashes when an alarm is triggered.

[0054] In addition, safety management personnel can send specific instructions to the communication module at any time through the communication terminal to instantly query the pressure, temperature, spark information and valve module status information in the dust collector or connecting pipe 310. The communication terminal receives and parses the instructions and replies with corresponding information according to different instructions.

[0055] In addition, the communication module will automatically send the status information of the dust collector and monitoring module 300 to the safety management personnel by sending information at set time points.

[0056] In this embodiment, the fire extinguishing module 200 includes a module body 210, which forms an explosion venting chamber that communicates with the external environment through an explosion venting opening. Multiple explosion venting nets 220 are evenly distributed on the module body 210, and a net frame frame 230 is fixed to the edge of the explosion venting opening by a first locking fastener 250, thus securing the explosion venting nets 220. Furthermore, a first sealing ring 240 is sandwiched between the edge of the explosion venting opening and the edge of the net frame frame 230, improving the sealing performance of the explosion venting opening. A reducing pipe 260 is locked to the module body 210 by a second locking fastener 290, and a second sealing ring 270 is sandwiched between the reducing pipe 260 and the module body 210, further improving the sealing performance between the reducing pipe 260 and the module body 210. The connecting pipe 310 is connected to the explosion relief chamber via the reducing pipe 260. The connecting pipe 310 is equipped with a third flange 312, and the reducing pipe 260 is equipped with a first flange 280. The two ends of the rotating shaft 190 are respectively connected to the third flange 312 and the first flange 280. The reducing pipe 260 and the connecting pipe 310 are locked together via the rotating shaft 190. Exemplarily, the connecting pipe 310 is also equipped with a second flange 311, and the connecting pipe 310 is locked together with the dust collector via the second flange 311.

[0057] Multiple rotating shafts 190 are provided, evenly spaced around the circumference of the connecting pipe 310. The number of valve disc assemblies 110 is the same as the number of rotating shafts 190, and they correspond one-to-one. Each rotating shaft 190 is connected to a valve disc assembly 110. The valve disc assembly 110 oscillates between a first position and a second position around the axis of its corresponding rotating shaft 190. When the valve disc module is in the closed state, the valve disc assembly 110 is in the first position, and all valve disc assemblies 110 are joined to form a baffle plate, which blocks the connection between the connecting pipe 310 and the explosion relief chamber. When the valve disc module is in the open state, the valve disc assembly 110 is in the second position, at which point the valve disc assembly 110 moves to the external environment.

[0058] The monitoring module 300 also includes a mounting plate 340 fixed to the connecting pipe 310. An actuator 350 is mounted on the mounting plate 340, and a drive gear 360 is coaxially fixed to the output end of the actuator 350. The actuator 350 drives the drive gear 360 to rotate around its axis, thus enabling it to drive the valve assembly 110. A central shaft 390 is also mounted on the mounting plate 340, and a central gear 380 is coaxially rotatably connected to the central shaft 390. The drive gear 360 is rotatably connected to the gear ring 180 via the central gear 380. A gasket 370 is sandwiched between the drive gear 360 and the actuator 350, protecting the end of the drive gear 360 facing the actuator 350 and preventing wear between them. Specifically, the actuator 350 is a servo motor, and the central gear 380 is a reduction gear.

[0059] When a deflation command is received from the controller, the execution component 350 immediately controls the valve module to switch from the closed state to the open state to realize the automatic deflation operation of the flameless deflation device.

[0060] The gear ring 180 is coaxial with the third flange 312 and can rotate around the axis of the gear ring 180. The gear ring 180 has an inner ring tooth surface and an outer ring tooth surface. The outer ring tooth surface is matched and meshed with the central gear 380, and the inner ring tooth surface is matched and meshed with the valve disc gear 118 of each valve disc assembly 110, thereby realizing the transmission connection of the actuator 350 to each valve disc assembly 110.

[0061] In this embodiment, a valve disc assembly 110 has a valve disc through hole 119, a valve disc gear 118 is located on one side of the opening of the valve disc through hole 119 and is coaxial with the valve disc through hole 119, and a rotating shaft 190 passes through the valve disc through hole 119 and is coaxial with the valve disc gear 118.

[0062] A closing proximity unit 114 is provided on the side of the valve disc assembly 110 away from the valve disc through hole 119, and an opening proximity unit 115 is provided on the side of the valve disc assembly 110 near the valve disc through hole 119. By receiving the signal feedback from the opening proximity unit 115, the position information of the opening proximity unit 115 can be obtained, thereby determining whether the valve disc assembly 110 has reached the second position, and thus determining whether the valve disc module has switched to the open state, which facilitates subsequent adjustment of the working state of the valve disc module's execution component 350. By receiving the signal feedback from the closing proximity unit 114, the position information of the closing proximity unit 114 can be obtained, thereby determining whether the valve disc assembly 110 has reached the first position, and thus determining whether the valve disc module has switched to the closed state, which facilitates subsequent adjustment of the working state of the valve disc module's execution component 350.

[0063] A limiting protrusion is provided on the side of the valve disc assembly 110. When a valve disc assembly 110 moves to the second position, it will stop because the side of the valve disc assembly 110 abuts against the limiting protrusion on the adjacent valve disc assembly 110. The above design ensures the limiting effect of the valve disc assembly 110 and ensures that the valve disc assembly 110 swings between the first position and the second position.

[0064] Each valve disc assembly 110 has a protruding positioning block 116 on one side and a recessed positioning groove 117 on the other side. When the valve disc assembly 110 is in the first position, the positioning block 116 on one valve disc assembly 110 is matched and engaged with the positioning groove 117 on the other valve disc assembly 110. This design increases the structural strength of the valve disc module in the closed state, ensuring that the entire valve disc module can withstand sufficient pressure, while further improving the sealing performance of the valve disc assembly 110 during splicing.

[0065] In this embodiment, the valve assembly 110 includes an upper valve disc 111, a lower valve disc 112, and a venting disc 170. The upper valve disc 111 and the lower valve disc 112 are detachably connected, and the edge of the venting disc 170 is sandwiched between the upper valve disc 111 and the lower valve disc 112. This design simplifies the structure of the valve assembly 110, reduces the difficulty of disassembling and assembling the venting disc 170, reduces the space occupied by the valve assembly 110 during the disassembly and assembly of the venting disc 170, and facilitates the maintenance and replacement of the venting disc 170.

[0066] Furthermore, the upper valve disc 111 can move relative to the lower valve disc 112 in a direction perpendicular to the venting disc 170. The above design is simple and reliable, occupies little space, and has high operational stability, enabling smooth relative movement between the upper valve disc 111 and the lower valve disc 112.

[0067] For example, the valve assembly 110 is formed by locking and splicing an upper valve disc 111 and a lower valve disc 112 together with locking pins 113. Multiple locking pins 113 are provided, simultaneously connecting the upper valve disc 111 and the lower valve disc 112 at corner positions. The upper valve disc 111 has a first contact surface, and the lower valve disc 112 has a second contact surface. The first and second contact surfaces face each other and respectively contact the two sides of the explosion relief disc 170. The length direction of the locking pins 113 is perpendicular to the plane containing the first contact surface. By driving the upper valve disc 111 to move closer to or further away from the lower valve disc 112 along the length direction of the locking pins 113, clamping and releasing operations of the explosion relief disc 170 can be achieved.

[0068] In this embodiment, both the first locking member 250 and the second locking member 290 are bolts.

[0069] like Figures 1-9 As shown, this embodiment also provides a control method for a flameless explosion venting device, applied to the aforementioned flameless explosion venting device, including the following steps:

[0070] Step 1: Run the dust collector to keep the valve module in a closed state.

[0071] Step 2: Use the first monitoring component to monitor the pressure and temperature inside the dust collector, and detect whether there are sparks or high-temperature particles inside the dust collector, and calculate the pressure change rate and temperature change rate inside the dust collector.

[0072] Step 3: Determine if, at the same time, sparks or high-temperature particles can be detected, the pressure inside the dust collector exceeds the first threshold, the pressure change rate exceeds the second threshold, the temperature exceeds the third threshold, or the temperature change rate exceeds the fourth threshold. If yes, proceed to Step 4; otherwise, return to Step 2.

[0073] Step 4: Switch the valve module to the open state, provide feedback on the pressure, pressure change rate, temperature and temperature change rate inside the dust collector, and issue a venting alarm.

[0074] Step 5: Monitor the pressure and temperature inside the dust collector, detect the presence of sparks or high-temperature particles inside the dust collector, and calculate the rate of pressure change and the rate of temperature change inside the dust collector.

[0075] Step Six: Determine whether the conditions of maintaining pressure below the first threshold, pressure change rate below the second threshold, temperature below the third threshold, and temperature change rate below the fourth threshold, and no sparks or high-temperature particles detected inside the dust collector, have reached the first time. If yes, proceed to Step Seven; otherwise, return to Step Five.

[0076] Step 7: Switch the valve module to the closed state, and then return to Step 2.

[0077] This flameless explosion relief device control method analyzes key parameters inside the dust collector by real-time monitoring of its pressure, pressure change rate, temperature, temperature change rate, and information on sparks or high-temperature particles. This allows for timely detection of abnormal information within the dust collector and automatic explosion relief based on the judgment results. The flameless explosion relief device designed above does not require the conventional setting of the dust collector's internal pressure to meet the 170°C opening pressure of the explosion relief disc. The triggering conditions are more flexible, and the monitoring parameters are more abundant. Therefore, the flameless explosion relief device can automatically relieve the explosion when the preset pressure is reached in the early stages of an accident, effectively reducing the severity and scope of the explosion accident and mitigating the hazards and consequences of dust explosion accidents.

[0078] In this embodiment, step seven includes the following detailed steps: Detecting sparks or high-temperature particles within the connecting pipe 310 using the second monitoring component. Determining whether the condition of no detected sparks or high-temperature particles within the connecting pipe 310 has reached a second time point. If yes, issuing a defrost completion message, then switching the valve module to the closed state, and finally returning to step two; otherwise, returning to the step of monitoring sparks or high-temperature particles within the connecting pipe 310. By detecting sparks or high-temperature particles within the connecting pipe 310, the determination of whether defrost is complete can be achieved, thereby enabling control over the state within the connecting pipe 310. This avoids the situation where the valve module switches to the closed state when sparks or high-temperature particles still exist within the connecting pipe 310, further improving the safety of the flameless explosion venting device operation, optimizing the operation process of the flameless explosion venting device control method, and ensuring the safety of the working environment.

[0079] For example, the control method for the flameless explosion relief device further includes the following steps: using a second monitoring component to monitor the pressure inside the connecting pipe 310, determining that the pressure inside the connecting pipe 310 is higher than a fifth threshold; if so, issuing an alarm message; otherwise, continuing to monitor the pressure inside the connecting pipe 310. When the valve module is in a closed state, the above design enables real-time monitoring of the pressure inside the connecting pipe 310 and timely alarm when the pressure is too high, thus achieving monitoring of whether the valve module is fully closed. This ensures that the valve module can be completely closed in the closed state, thereby guaranteeing the smooth operation of the valve module.

[0080] In this embodiment, the flameless explosion venting device also includes a timing unit for timing. The control method for the flameless explosion venting device includes the following steps: reading the timing time of the timing unit, determining whether the timing time has reached the third time, and if so, feeding back the pressure, pressure change rate, temperature, and temperature change rate inside the dust collector, then resetting the timing time to zero and restarting the timing, and resuming reading the timing time of the timing unit; if not, continuing to read the timing time of the timing unit. Through the above steps, the communication module can periodically send information to safety management personnel, ensuring that safety management personnel can periodically obtain the status information inside the flameless explosion venting device.

[0081] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A flameless explosion venting device installed in a dust collector, characterized by, The application relates to a flameless explosion venting device for a dust collector. The flameless explosion venting device comprises a fire extinguishing module (200) for reducing the explosion intensity when the dust collector explodes, a monitoring module (300) comprising a first monitoring assembly, a second monitoring assembly and a connecting pipe (310) connecting the dust collector and the fire extinguishing module (200), and a valve module comprising a plurality of valve assemblies (110), wherein the valve module can be switched between a closed state and an open state, when the valve module is in the closed state, all the valve assemblies (110) are spliced with each other and separate the fire extinguishing module (200) from the connecting pipe (310), and when the valve module is in the open state, all the valve assemblies (110) are moved to the external environment, so that the fire extinguishing module (200) is connected with the connecting pipe (310). The first monitoring assembly is arranged in the dust collector and is used for monitoring the pressure and temperature in the dust collector and detecting whether sparks or high-temperature particles exist in the dust collector; and the second monitoring assembly is arranged in the connecting pipe (310) and is used for monitoring the pressure in the connecting pipe (310) and detecting whether sparks or high-temperature particles exist in the connecting pipe (310). The valve assembly (110) comprises an upper valve (111), a lower valve (112) and an explosion venting sheet (170), the upper valve (111) is detachably connected with the lower valve (112), and the edge of the explosion venting sheet (170) is clamped between the upper valve (111) and the lower valve (112). The first monitoring assembly comprises an explosion-proof pressure detection unit (320), an explosion-proof spark detection unit (330) and an explosion-proof temperature detection unit, the explosion-proof pressure detection unit (320) is used for monitoring the pressure in the dust collector and calculating the pressure change rate, the explosion-proof spark detection unit (330) is used for detecting whether sparks or high-temperature particles exist in the dust collector, and the explosion-proof temperature detection unit is used for monitoring the temperature in the dust collector and calculating the temperature change rate. The second monitoring assembly comprises an explosion-proof pressure detection unit (320) and an explosion-proof spark detection unit (330), the explosion-proof pressure detection unit (320) is used for monitoring the pressure in the connecting pipe (310), and the explosion-proof spark detection unit (330) is used for detecting whether sparks or high-temperature particles exist in the connecting pipe (310).

2. The flameless explosion venting device of claim 1, wherein The upper valve (111) can be moved relative to the lower valve (112) in a direction perpendicular to the explosion venting sheet (170).

3. The flameless explosion venting device of claim 1, wherein, The flameless explosion venting device further comprises a control terminal, and the control terminal can control the valve module to be switched between the closed state and the open state.

4. The flameless explosion venting device of claim 1, wherein, The method comprises the following steps:

5. The flameless explosion venting device according to any one of claims 1-4, characterized in that, S10: running the dust collector, so that the valve module is in the closed state; 6. A method for controlling a flameless explosion venting device according to any one of claims 1-5, c h a r a c t e r i s e d i n that S20: monitoring the pressure in the dust collector, the temperature in the dust collector and detecting whether sparks or high-temperature particles exist in the dust collector by using the first monitoring assembly, and calculating the pressure change rate and the temperature change rate in the dust collector; ​ ​ S30: judging whether the spark or high-temperature particle can be detected at the same time, the pressure in the dust collector is kept over the first threshold value or the pressure change rate is over the second threshold value or the temperature is over the third threshold value or the temperature change rate is over the fourth threshold value, if yes, proceeding to S40, if no, returning to S20; S40: switching the valve module to the open state, feeding back the pressure, the pressure change rate, the temperature and the temperature change rate in the dust collector, and issuing a venting alarm; S50: monitoring the pressure in the dust collector, the temperature in the dust collector and whether the spark or high-temperature particle exists in the dust collector, and calculating the pressure change rate and the temperature change rate in the dust collector; S60: judging whether the condition that the pressure in the dust collector is below the first threshold value, the pressure change rate is below the second threshold value, the temperature is below the third threshold value, the temperature change rate is below the fourth threshold value and the spark or high-temperature particle is not detected reaches the first time, if yes, proceeding to S70, if no, returning to S50; S70: switching the valve module to the closed state, and then returning to S20.

7. The method according to claim 6, wherein The S70 comprises the following detailed steps: S71: monitoring the spark or high-temperature particle in the connecting pipe (310) by using the second monitoring assembly; S72: judging whether the condition that the spark or high-temperature particle is not detected in the connecting pipe (310) reaches the second time, if yes, issuing a venting completion information, then switching the valve module to the closed state, and finally returning to S20; if no, returning to S71.

8. The method according to claim 6, wherein Further comprising the following steps: monitoring the pressure in the connecting pipe (310) by using the second monitoring assembly, judging whether the pressure in the connecting pipe (310) is higher than the fifth threshold value, if yes, issuing an alarm information; if no, continuing to monitor the pressure in the connecting pipe (310).

9. The method according to claim 6, wherein The flameless venting device further comprises a timing unit for timing, and the flameless venting device control method comprises the following steps: reading the timing time of the timing unit, judging whether the timing time reaches the third time, if yes, feeding back the pressure, the pressure change rate, the temperature and the temperature change rate in the dust collector, then resetting the timing time of the timing unit and re-timing, and re-reading the timing time of the timing unit; if no, continuing to read the timing time of the timing unit.

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