A flame arrestor detection alarm system

Abstract

The utility model relates to a fire arrester detection alarm system belongs to fire arrester detection technical field, including waste gas inlet pipe, waste gas outlet pipe and the fire arrester of connecting both's fire arrester, be equipped with the fire arrester on the fire arrester, the fire arrester is provided with two in parallel, the fire arrester is equipped with on each fire arrester, the top of fire arrester of both ends of each fire arrester is equipped with vertical pressure transmitter and temperature transmitter, and the temperature transmitter's temperature measurement probe is inserted into the central position of fire arrester, and pressure transmitter and temperature transmitter are connected with controller, and the both ends of each fire arrester are equipped with electric butterfly valve of connecting controller, and controller is connected with alarm unit. The utility model solves the shortcoming that the fire arrester cannot be observed and judged by naked eye to appear above problem, guarantees the safety of waste gas pipeline transportation, can maintain the fault fire arrester without stopping, guarantees waste gas transportation continuity, promotes production and environmental protection treatment efficiency.

Description

Technical Field

[0001] This utility model relates to a flame arrester detection and alarm system, belonging to the field of flame arrester detection technology. Background Technology

[0002] Hazardous chemical enterprises generate industrial waste gas during production processes. This waste gas contains flammable components. Flame arresters are typically installed on the waste gas pipelines leading to the incinerator in environmental treatment facilities to prevent backfire. However, in practical applications, impure waste gas can easily cause blockage of the flame arrester. Unstable pipeline pressure and rapid changes in pressure difference across the flame arrester can also cause backfire. Furthermore, these problems cannot be visually detected, compromising the safety of waste gas pipeline transportation. Utility Model Content

[0003] This invention provides a flame arrester detection and alarm system to solve the problems mentioned in the background.

[0004] This utility model relates to a flame arrester detection and alarm system, including an exhaust gas inlet pipe, an exhaust gas outlet pipe, and a flame arrester connecting the two. A flame arrester is installed on the flame arrester, and two flame arresters are connected in parallel. Each flame arrester has a flame arrester on its top. A vertical pressure transmitter and a temperature transmitter are installed at the top of the flame arrester at both ends of each flame arrester. The temperature probe of the temperature transmitter extends into the center of the flame arrester. The pressure transmitter and temperature transmitter are connected to a controller. An electric butterfly valve connected to the controller is installed at both ends of each flame arrester. The controller is connected to an alarm unit.

[0005] As a preferred option, the alarm unit consists of an LED warning light and a buzzer connected to the controller, which can be used to sound an alarm.

[0006] As a preferred embodiment, each pressure transmitter is equipped with a pressure relief valve at its lower end, and a pressure testing tube is fixedly attached to the lower end of the valve. The pressure testing tube is fixedly connected to the top of the flame arrestor. The pressure relief valve can be closed when the pressure transmitter is disassembled to prevent exhaust gas leakage.

[0007] As a preferred option, a condensing coil is installed between the pressure transmitter and the pressure relief valve on the side near the exhaust gas outlet pipe. In the event of backfire, the flame or gas can be cooled as it passes through the condensing coil, thus providing better protection for the pressure transmitter.

[0008] As a preferred option, the temperature transmitter is an integrated temperature transmitter. A screw nut is fixed to the upper part of the temperature probe, and a threaded post is fixed to the lower end of the screw nut. The top of the flame arrestor tube has a stepped mounting hole, and each threaded post is equipped with multiple adjusting sleeves. The inner hole at the top of the adjusting sleeve has an internal thread that mates with the threaded post. The lengths of the multiple adjusting sleeves are not equal, and the bottom of each adjusting sleeve has a stepped mounting platform that mates with the stepped mounting hole. The temperature transmitter achieves adjustable probe depth through adjusting sleeves of different lengths, adapting to flame arrestor tubes of different diameters, ensuring that the probe is always in the mainstream exhaust gas area, resulting in more accurate temperature detection.

[0009] As a preferred embodiment, the top of the stepped mounting hole is provided with a tapered welding groove, and the lower outer wall of the adjusting sleeve is provided with a larger than semi-circular anti-detachment arc groove. A welding sealing layer is provided inside the tapered welding groove, and the inner end of the welding sealing layer extends into the anti-detachment arc groove. The cooperation between the welding sealing layer and the anti-detachment arc groove solves the leakage and detachment problems of traditional installations, resulting in higher sealing reliability.

[0010] As a preferred option, both the pressure transmitter and the temperature transmitter have their wiring ports connected to explosion-proof flexible conduits. Both ends of the explosion-proof flexible conduits are fixed with explosion-proof connectors that mate with the threads of the wiring ports. The explosion-proof connector at the other end of the flexible conduit is connected to an explosion-proof conduit, which meets explosion-proof safety standards and is therefore safer.

[0011] This utility model has the following beneficial effects: To overcome the shortcomings of not being able to visually diagnose the above-mentioned problems with flame arresters, and to ensure the safety of waste gas pipeline transportation, two parallel flame arrester pipes are connected with electric butterfly valves at both ends. When the flame arrester of one flame arrester pipe fails, the controller can quickly close the electric butterfly valve of the faulty flame arrester pipe and open the electric butterfly valve of the backup flame arrester pipe. The faulty flame arrester can be repaired without stopping the machine, ensuring continuous waste gas transportation and improving production and environmental protection efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Partial structural diagram; Figure 3 for Figure 2 Enlarged structural diagram at point A; In the diagram: 1. Exhaust gas inlet pipe; 2. Exhaust gas outlet pipe; 3. Flame arrestor pipe; 4. Flame arrester; 5. Electric butterfly valve; 6. Pressure transmitter; 7. Temperature transmitter; 8. Condensate coil; 9. Pressure shut-off valve; 10. Explosion-proof conduit; 11. Tightening nut; 12. Temperature probe; 13. Adjusting sleeve; 14. Explosion-proof hose; 15. Threaded post; 16. Mounting step platform; 17. Conical welding groove; 18. Anti-detachment arc groove; 19. Welded sealing layer. Detailed Implementation

[0013] The present invention will be further described below with reference to the embodiments.

[0014] Example 1, such as Figures 1 to 3 As shown, this utility model is a flame arrester detection and alarm system, including an exhaust gas inlet pipe 1, an exhaust gas outlet pipe 2, and a flame arrester pipe 3 connecting the two. A flame arrester 4 is provided on the flame arrester pipe 3. Two flame arrester pipes 3 are connected in parallel, and each flame arrester pipe 3 is provided with a flame arrester 4. A vertical pressure transmitter 6 and a temperature transmitter 7 are provided at the top of the flame arrester pipe 3 at both ends of each flame arrester 4. The temperature probe 12 of the temperature transmitter 7 extends into the center of the flame arrester pipe 3. The pressure transmitter 6 and the temperature transmitter 7 are connected to a controller. Each flame arrester pipe 3 is provided with an electric butterfly valve 5 connected to the controller at both ends. The controller is connected to an alarm unit.

[0015] Under normal operating conditions: The controller defaults to opening both the inlet and outlet ends of the electric butterfly valve 5 of the upper flame arrestor pipe 3, and closing the electric butterfly valve 5 of the lower standby flame arrestor pipe 3; the pressure transmitter 6 collects the pressure at both ends of the upper flame arrestor pipe 3 in real time, and the temperature transmitter 7 collects the temperature at both ends. The data is transmitted to the controller, and there are no alarms in the system.

[0016] Blockage fault response: When the pressure difference ΔP between the two ends of the upper flame arrester 4 rises to the set value due to dust blockage, the controller will control the alarm unit to sound an alarm; after the staff confirms, they can prepare for maintenance, and at the same time open the electric butterfly valve 5 of the lower flame arrester 3 and close the electric butterfly valve 5 of the upper flame arrester 3. After the switching is completed, the alarm will be paused, and the staff can disassemble the upper flame arrester 4 for cleaning without stopping the machine.

[0017] Backfire fault response: When backfire in the incinerator causes a sudden rise in the temperature at the outlet of the flame arrestor 3, and the temperature difference ΔT between the two ends of the flame arrestor 4 reaches the set value, the controller triggers a backfire alarm and immediately closes the electric butterfly valve 5 of the flame arrestor 3 to prevent the backfire from spreading and ensure pipeline safety.

[0018] Example 2, based on Example 1, the alarm unit is an LED warning light and a buzzer connected to the controller.

[0019] Each pressure transmitter 6 is connected to a pressure relief valve 9 at its lower end. A pressure testing tube is fixed to the lower end of the pressure relief valve 9, and the pressure testing tube is fixedly connected to the top of the flame arrestor 3. The pressure relief valve 9 can be a needle valve.

[0020] A condenser coil 8 is installed between the pressure transmitter 6 and the pressure relief valve 9 near the exhaust gas outlet pipe 2. When high-temperature gas passes through the condenser coil 8, it dissipates heat and protects the pressure transmitter 6. The regulating sleeve 13 is made of 316L stainless steel.

[0021] The temperature transmitter 7 is an integrated temperature transmitter. The upper part of the temperature probe 12 is fixed with a screw nut 11, and the lower end of the screw nut 11 is fixed with a threaded post 15. The top of the flame arrestor tube 3 is provided with a mounting step hole. Each threaded post 15 is equipped with multiple adjusting sleeves 13. The top inner hole of the adjusting sleeve 13 is provided with an internal thread that mates with the threaded post 15. The lengths of the multiple adjusting sleeves 13 are not equal. The bottom of each adjusting sleeve 13 is provided with a mounting step platform 16 that mates with the mounting step hole.

[0022] The top of the stepped mounting hole is provided with a tapered welding groove 17, and the lower outer wall of the adjusting sleeve 13 is provided with a larger than semi-circular anti-detachment arc groove 18. A welding sealing layer 19 is provided inside the tapered welding groove 17, and the inner end of the welding sealing layer 19 extends into the anti-detachment arc groove 18. When installing the temperature transmitter 7, an adjusting sleeve 13 of appropriate length can be selected according to the diameter of the flame arrestor tube 3. Then, the lower end of the adjusting sleeve 13 is inserted into the mounting stepped hole of the flame arrestor tube 3. Then, the welding sealing layer 19 is welded into the tapered welding groove 17 for fixing and sealing. Then, the temperature probe 12 of the temperature transmitter 7 is inserted into the adjusting sleeve 13, and the threaded post 15 is tightened on the internal thread at the upper end of the adjusting sleeve 13. After tightening, the bottom of the temperature probe 12 is located at the center of the flame arrestor tube 3 for more accurate temperature measurement.

[0023] Both pressure transmitter 6 and temperature transmitter 7 have their wiring ports connected to explosion-proof flexible conduits 14. Both ends of the explosion-proof flexible conduits 14 are fixed with explosion-proof connectors that mate with the threads of the wiring ports. The explosion-proof connector at the other end of the explosion-proof flexible conduit 14 is connected to an explosion-proof conduit 10. The power and control cables of pressure transmitter 6 and temperature transmitter 7 pass through the explosion-proof flexible conduit 14 and enter the explosion-proof conduit 10.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0025] In the description of this utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A flame arrester detection and alarm system, comprising an exhaust gas inlet pipe (1), an exhaust gas outlet pipe (2), and a flame arrester pipe (3) connecting the two, wherein a flame arrester (4) is provided on the flame arrester pipe (3), characterized in that: Two flame arrestor tubes (3) are connected in parallel. Each flame arrestor tube (3) is equipped with a flame arrester (4). At the top of the flame arrestor tube (3) at both ends of each flame arrester (4) are vertical pressure transmitters (6) and temperature transmitters (7). The temperature probe (12) of the temperature transmitter (7) extends into the center of the flame arrestor tube (3). The pressure transmitter (6) and temperature transmitter (7) are connected to a controller. Each flame arrestor tube (3) is equipped with an electric butterfly valve (5) connected to the controller at both ends. The controller is connected to an alarm unit.

2. The flame arrester detection and alarm system according to claim 1, characterized in that: The alarm unit consists of an LED warning light and a buzzer connected to the controller.

3. The flame arrester detection and alarm system according to claim 1, characterized in that: Each pressure transmitter (6) is connected to a pressure cut-off valve (9) at its lower end. A pressure measuring tube is fixed to the lower end of the pressure cut-off valve (9), and the pressure measuring tube is fixedly connected to the top of the flame arrestor tube (3).

4. The flame arrester detection and alarm system according to claim 3, characterized in that: A condenser coil (8) is provided between the pressure transmitter (6) and the pressure cut-off valve (9) on the side near the exhaust gas outlet pipe (2).

5. The flame arrester detection and alarm system according to claim 1, characterized in that: The temperature transmitter (7) is an integrated temperature transmitter. The upper part of the temperature probe (12) is fixed with a screw nut (11), and the lower end of the screw nut (11) is fixed with a threaded post (15). The top of the flame arrestor tube (3) is provided with a step hole for installation. Each threaded post (15) is equipped with multiple adjusting sleeves (13). The inner hole at the top of the adjusting sleeve (13) is provided with an internal thread that mates with the threaded post (15). The lengths of the multiple adjusting sleeves (13) are not equal. The bottom of each adjusting sleeve (13) is provided with a step platform (16) that mates with the step hole for installation.

6. The flame arrester detection and alarm system according to claim 5, characterized in that: The top of the stepped hole is provided with a tapered welding groove (17), and the lower outer wall of the adjusting sleeve (13) is provided with an anti-detachment arc groove (18) larger than a semicircle. The tapered welding groove (17) is provided with a welding sealing layer (19), and the inner end of the welding sealing layer (19) extends into the anti-detachment arc groove (18).

7. The flame arrester detection and alarm system according to claim 1, characterized in that: Both the pressure transmitter (6) and the temperature transmitter (7) are connected to explosion-proof hoses (14). Both ends of the explosion-proof hoses (14) are fixed with explosion-proof connectors that are threaded to the connection ports. The explosion-proof connector at the other end of the explosion-proof hoses (14) is connected to an explosion-proof conduit (10).

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