A pressure-sensing self-relief explosion-proof device

Abstract

This utility model discloses a pressure-sensing self-relieving explosion-proof device, belonging to the field of gas furnace pressure relief technology. It includes a combustion furnace and a pressure relief pipe. The pressure relief pipe is fixedly installed on the top of the combustion furnace, and a pressure sensor and a pressure gauge are also fixedly installed on the surface of the combustion furnace. A pressure relief detection mechanism, used to detect and relieve pressure inside the combustion furnace, is located on one side of the combustion furnace. Through this method, the pressure sensor can monitor the internal pressure of the combustion furnace in real time and drive the self-relieving component to automatically adjust the pressure relief amplitude according to pressure changes, achieving staged and controllable pressure relief, improving the system's response efficiency and stability under complex operating conditions. If the self-relieving component fails, the emergency component can manually relieve pressure through manual operation. The pressure gauge provides a real-time pressure reference to assist personnel in determining whether to intervene, enhancing the system's fault tolerance and safety assurance capabilities.

Description

Technical Field

[0001] This utility model relates to the field of gas furnace pressure relief technology, specifically to a self-relieving explosion-proof device with pressure sensing. Background Technology

[0002] Regenerative Thermal Oxidizers (RTOs) are key equipment in current industrial organic waste gas treatment, widely used to treat high-temperature exhaust gases containing volatile organic compounds (VOCs). This system decomposes harmful components in the waste gas into harmless substances through high-temperature thermal oxidation, achieving efficient purification and heat recovery.

[0003] However, in the actual operation of RTO systems, the combustion chamber or furnace top area is constantly in a high-temperature, high-pressure, and fuel-rich environment. Once the system malfunctions, such as instantaneous gas retention and accumulation, oxygen supply imbalance, valve failure, or ignition abnormality, it is very easy to cause a sharp rise in the furnace pressure, resulting in deflagration or local shock waves. If the pressure is not released in time, it will damage the equipment and the surrounding environment. Existing pressure relief or explosion-proof devices are mostly passive structures, which make it difficult to accurately adjust the release degree at different pressure stages.

[0004] Based on this, this utility model designs a pressure-sensing self-relieving explosion-proof device to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a pressure-sensing self-relieving explosion-proof device.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A pressure-sensing self-relieving explosion-proof device includes a combustion furnace and a pressure relief pipe. The pressure relief pipe is fixedly installed on the top of the combustion furnace, a pressure sensor is fixedly installed on the surface of the combustion furnace, and a pressure gauge is also fixedly installed on the surface of the combustion furnace. A pressure relief detection mechanism is provided on one side of the combustion furnace for detecting and relieving the internal pressure. The pressure relief detection mechanism includes multiple guide pulleys fixedly installed on the outside of the combustion furnace, a self-relieving component is provided on the outside of the pressure relief pipe, and an emergency component is provided on one side of the self-relieving component.

[0008] Furthermore, the self-relieving assembly includes a sealing cap hinged to the top of the pressure relief pipe, one side of which extends into the interior of the pressure relief pipe and is sealed to the interior of the pressure relief pipe. Multiple guide pulleys are evenly distributed on both sides of the sealing cap. A connecting block is fixedly installed on the top of the sealing cap. Steel wire ropes are rotatably connected to the surfaces of two connecting blocks. The two steel wire ropes are slidably connected to the multiple guide pulleys on both sides respectively.

[0009] Furthermore, two support frames are fixedly installed on one side of the combustion furnace. The two support frames are located at the other ends of the two steel wire ropes, and winding wheels are fixedly installed on the top of the two support frames. The two steel wire ropes are fixedly connected to the two winding wheels, and a winding motor is fixedly installed on one side of one winding wheel.

[0010] Furthermore, a counterweight is fixedly installed on one side of the sealing cover, and the counterweight is set in an arc shape.

[0011] Furthermore, a guide frame is fixedly installed on the outside of the pressure relief pipe, and the guide frame slides in contact with the counterweight.

[0012] Furthermore, a limiting frame is fixedly installed on the top of the combustion furnace, the limiting frame is located on one side of the sealing cover, and a trigger block is fixedly installed on one side of the limiting frame.

[0013] Furthermore, the emergency component includes a rocker wheel located on one side of the other winding wheel, one side of which extends into the interior of the winding wheel and is fixedly connected to the drive end.

[0014] Furthermore, a limiting plate is fitted on the outer side of the rocker wheel, and multiple limiting grooves are opened on one side of the limiting plate. The multiple limiting grooves are adapted to the shape of the rocker wheel. A spring is fixedly installed on the other side of the limiting plate, and the other end of the spring is fixedly connected to the adjacent winding wheel. A limiting rod is slidably installed on one side of the winding wheel. The limiting rod is located on one side of the limiting plate, and the limiting rod is in sliding contact with the limiting groove on one side of the limiting plate.

[0015] Beneficial effects

[0016] 1. The pressure sensor can monitor the internal pressure of the combustion furnace in real time and drive the self-relief component to automatically adjust the pressure relief amplitude according to pressure changes, realizing staged and controllable pressure relief and improving the system's response efficiency and stability under complex operating conditions. If the self-relief component fails, the emergency component can be manually operated to relieve pressure. The pressure gauge provides real-time pressure reference to assist personnel in judging whether to intervene, enhancing the system's fault tolerance and safety assurance capabilities.

[0017] 2. When the rocker wheel opens the sealing cover to the point where it contacts the trigger block and cannot be opened further, the sliding limit of the limit plate is released by raising the limit rod. The spring drives the limit plate to approach the rocker wheel and contact the rocker wheel through multiple limit grooves to form a position locking structure for the rocker wheel. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of the main structure of a pressure-sensing self-releasing explosion-proof device according to the present invention.

[0020] Figure 2 This is a front view of the detection and pressure relief mechanism of a pressure-sensing self-relieving explosion-proof device according to the present invention.

[0021] Figure 3 This is a schematic diagram of the sealing cover and wire rope structure of a pressure-sensitive self-relieving explosion-proof device according to this utility model.

[0022] Figure 4 This is a schematic diagram of the support frame and winding wheel structure of a pressure-sensitive self-relieving explosion-proof device according to this utility model;

[0023] Figure 5 This is a schematic diagram of the rocker wheel and limit plate structure of a pressure-sensing self-releasing explosion-proof device according to the present invention.

[0024] The labels in the diagram represent:

[0025] 100. Combustion furnace; 110. Pressure sensor; 120. Pressure gauge; 200. Pressure relief pipe; 300. Pressure relief detection mechanism; 310. Guide pulley; 320. Self-relieving pressure assembly; 321. Sealing cover; 322. Connecting block; 323. Wire rope; 324. Support frame; 325. Winding wheel; 326. Winding motor; 327. Counterweight; 328. Guide frame; 329. Limiting frame; 3210. Trigger block; 330. Emergency assembly; 331. Rocker wheel; 332. Limiting plate; 333. Limiting rod; 334. Spring. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] The present invention will be further described below with reference to the embodiments.

[0028] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-4 A pressure-sensing self-relieving explosion-proof device includes a combustion furnace 100 and a pressure relief pipe 200. The pressure relief pipe 200 is fixedly installed on the top of the combustion furnace 100, a pressure sensor 110 is fixedly installed on the surface of the combustion furnace 100, and a pressure gauge 120 is also fixedly installed on the surface of the combustion furnace 100. A pressure relief detection mechanism 300 is provided on one side of the combustion furnace 100 for detecting and relieving the internal pressure. The pressure relief detection mechanism 300 includes multiple guide pulleys 310 fixedly installed on the outside of the combustion furnace 100, a self-relieving component 320 is provided on the outside of the pressure relief pipe 200, and an emergency component 330 is provided on one side of the self-relieving component 320.

[0029] In one embodiment of this utility model, by setting a pressure sensor 110, the pressure changes inside the combustion furnace 100 can be sensed in real time, and the pressure signal is transmitted to the self-relief component 320, which can automatically adjust the pressure relief amplitude according to the current pressure, realizing phased and controllable pressure relief adjustment, avoiding excessive or delayed pressure relief at one time, effectively improving the adaptability and response efficiency of the equipment under complex operating conditions. In the event of failure or delayed response of the self-relief component 320, the emergency component 330 can be activated by manual intervention to relieve pressure. The pressure gauge 120 provides real-time pressure monitoring reference, enabling operators to quickly determine whether to intervene in emergency pressure relief under abnormal conditions, enhancing the safety tolerance and operational reliability of the system.

[0030] It should be noted that the combustion furnace 100 can be an industrial regenerative incinerator. Its main structure includes a combustion chamber, gas nozzles, combustion fan, combustion controller, and exhaust gas emission system. The self-relief components 320 and emergency components 330 are all located on the top or side of the combustion furnace 100. They do not directly contact the inside of the combustion chamber, nor do they interfere with the gas flow path, flame stabilization zone, or nozzle arrangement during the combustion process. The two components are only activated under abnormal pressure conditions and are auxiliary safety structures. During normal operation, they are in standby or sealed state, do not participate in the gas combustion reaction, and do not affect the combustion fan control logic and exhaust system operating parameters. Therefore, they do not affect the normal use of the combustion furnace 100.

[0031] In some embodiments, such as Figure 2 , Figure 3 and Figure 4As shown, in a preferred embodiment of the present invention, the self-relieving assembly 320 includes a sealing cover 321 hinged to the top of the pressure relief pipe 200. One side of the sealing cover 321 extends into the interior of the pressure relief pipe 200 and is sealed to the interior of the pressure relief pipe 200. Multiple guide pulleys 310 are evenly distributed on both sides of the sealing cover 321. A connecting block 322 is fixedly installed on the top of the sealing cover 321. Steel wire ropes 323 are rotatably connected to the surfaces of the two connecting blocks 322. The two steel wire ropes 323 are slidably connected to the multiple guide pulleys 310 on both sides respectively.

[0032] In one embodiment of this utility model, two connecting blocks 322 are fixedly installed on the top of the sealing cover 321. A steel wire rope 323 is rotatably connected to the surface of each connecting block 322. The two steel wire ropes 323 are respectively wound around multiple guide pulleys 310 on the corresponding sides and kept taut. During operation, the connecting blocks 322 can be driven to move as a whole by pulling the steel wire ropes 323, thereby causing the sealing cover 321 to rotate around the hinge axis, realizing the opening of the pressure relief channel. The opening angle of the sealing cover 321 can be automatically adjusted according to the internal pressure of the combustion furnace 100 sensed by the pressure sensor 110.

[0033] Two support frames 324 are fixedly installed on one side of the combustion furnace 100. The two support frames 324 are located at the other end of the two wire ropes 323 respectively. A winding wheel 325 is fixedly installed on the top of the two support frames 324. The two wire ropes 323 are fixedly connected to the two winding wheels 325 respectively. A winding motor 326 is fixedly installed on one side of one winding wheel 325.

[0034] In one embodiment of this utility model, when the pressure sensor 110 detects that the internal pressure of the combustion furnace 100 has reached the preset upper limit, the control system can start the winding motor 326, which drives the winding wheel 325 to rotate, thereby pulling the wire rope 323 to tighten, driving the connecting block 322 to move upward and drive the sealing cover 321 to open, thereby realizing active pressure relief. After the pressure relief is completed, the winding motor 326 rotates in the opposite direction, which can release the tension of the wire rope 323, so that the sealing cover 321 is reset to the initial sealing state under the action of gravity or auxiliary spring mechanism. Through the electric winding system, the remote control and automatic adjustment function of the sealing cover 321 is realized, which not only improves the sensitivity and accuracy of the pressure relief response, but also controls the pressure relief amplitude according to different pressure levels.

[0035] A counterweight 327 is fixedly installed on one side of the sealing cover 321. The counterweight 327 is set in an arc shape.

[0036] In one embodiment of this utility model, the gravity load generated by the counterweight 327 will rise synchronously with the sealing cover 321, without interfering with the opening process. After the pressure is released, the wire rope 323 slackens, and the counterweight 327 can use its own gravity to make the sealing cover 321 quickly fall back to the sealing position, realizing passive automatic reset without the need for an external reset device.

[0037] A guide frame 328 is fixedly installed on the outside of the pressure relief pipe 200, and the guide frame 328 slides in contact with the counterweight 327.

[0038] In one embodiment of this utility model, after the pressure relief is completed and the tension is released, the counterweight 327 automatically slides down along the guide frame 328 under its own gravity, driving the sealing cover 321 to quickly fall back to its original position and complete the sealing closure.

[0039] A limit frame 329 is fixedly installed on the top of the combustion furnace 100. The limit frame 329 is located on one side of the sealing cover 321, and a trigger block 3210 is fixedly installed on one side of the limit frame 329.

[0040] In one embodiment of this utility model, during the depressurization process, as the wire rope 323 pulls the sealing cover 321 to gradually open, when the sealing cover 321 opens to a preset angle such as 85°, its structural edge will contact the trigger block 3210. The trigger signal will then control the winding motor 326 to stop, preventing the sealing cover 321 from opening excessively and preventing the opening angle of the sealing cover 321 from exceeding 90°. This will prevent the center of gravity of the counterweight block 327 from crossing the rotation hinge point, causing a change in the direction of gravity and thus losing its ability to fall back naturally.

[0041] In some embodiments, such as Figure 2 , Figure 4 and Figure 5 As shown, in a preferred embodiment of the present invention, the emergency component 330 includes a rocker wheel 331 disposed on one side of the take-up reel 325, one side of the rocker wheel 331 extending into the interior of the take-up reel 325 and fixedly connected to the drive end.

[0042] In one embodiment of this utility model, during normal operation, the rocker wheel 331 is stationary and does not affect the control action of the winding motor 326 on the wire rope 323. When the self-relief assembly 320 fails to respond normally due to reasons such as electrical control system failure, signal interruption, power interruption, or mechanical jamming, the current internal pressure value of the combustion furnace 100 can be read by the pressure gauge 120. Based on the judgment criteria, manual intervention can be performed. At this time, the rocker wheel 331 can be manually rotated to drive the corresponding winding wheel 325 to rotate in the forward direction, driving the wire rope 323 on the corresponding side to be wound up, thereby pulling the connecting block 322 to drive the sealing cover 321 to open, realizing the emergency pressure relief operation and ensuring that the pressure relief capability is still available in extreme situations.

[0043] A limiting plate 332 is fitted on the outer side of the rocker wheel 331. Multiple limiting grooves are opened on one side of the limiting plate 332, and the multiple limiting grooves are adapted to the shape of the rocker wheel 331. A spring 334 is fixedly installed on the other side of the limiting plate 332. The other end of the spring 334 is fixedly connected to the adjacent winding wheel 325. A limiting rod 333 is slidably installed on one side of the winding wheel 325. The limiting rod 333 is located on one side of the limiting plate 332, and the limiting rod 333 is in sliding contact with the limiting groove on one side of the limiting plate 332.

[0044] In one embodiment of this utility model, when the rocker wheel 331 opens the sealing cover 321 to the point where it contacts the trigger block 3210 and cannot be opened further, the sliding limit of the limit plate 332 is released by lifting the limit rod 333. The spring 334 drives the limit plate 332 to approach the rocker wheel 331 and contact the rocker wheel 331 through multiple limit grooves to form a position locking structure for the rocker wheel 331.

[0045] In this embodiment of the utility model, if the pressure inside the combustion furnace 100 rises abnormally due to an abnormal condition during operation, the pressure sensor 110 will sense the internal pressure change in real time and transmit the signal to the control system, start the winding motor 326, drive the wire rope 323 to pull the connecting block 322 via the guide pulley 310, thereby driving the sealing cover 321 to open around the hinge point, open the pressure relief pipe 200, and release the internal high-pressure gas. The opening angle of the sealing cover 321 is controlled by the limiting frame 329 and the trigger block 3210. When the preset angle is reached, such as 85°, the trigger control motor stops running to avoid exceeding 90° and causing the counterweight block 327 to lose control of its center of gravity.

[0046] After the pressure relief is completed, the winding motor 326 releases the tension in the reverse direction, and the counterweight 327 slides down under the guidance of the guide frame 328, which drives the sealing cover 321 to automatically fall back to the sealing position, realizing gravity-driven passive reset. If the self-relief component 320 fails due to a fault in the electrical control system, the operator can judge the state inside the furnace through the pressure gauge 120 and rotate the rocker wheel 331 on the emergency component 330 to manually drive the winding wheel 325 to relieve pressure. To prevent the rocker wheel 331 from rotating out of control, the limit plate 332 and the spring 334 form a mechanical locking structure, which locks the rocker wheel 331 after it is manually opened to the limit position.

[0047] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pressure-sensing self-relief explosion-proof device, comprising a combustion furnace (100) and a pressure relief pipe (200), characterized in that: A pressure relief pipe (200) is fixedly installed on the top of the combustion furnace (100), a pressure sensor (110) is fixedly installed on the surface of the combustion furnace (100), and a pressure gauge (120) is also fixedly installed on the surface of the combustion furnace (100). A pressure relief detection mechanism (300) is provided on one side of the combustion furnace (100) for detecting and relieving the internal pressure of the combustion furnace (100). The detection and pressure relief mechanism (300) includes multiple guide pulleys (310) fixedly installed on the outside of the combustion furnace (100), a self-pressure relief assembly (320) is provided on the outside of the pressure relief pipe (200), and an emergency assembly (330) is provided on one side of the self-pressure relief assembly (320).

2. The pressure-sensing self-relief explosion-proof device according to claim 1, characterized in that, The self-relieving pressure assembly (320) includes a sealing cap (321) hinged to the top of the pressure relief pipe (200). One side of the sealing cap (321) extends into the interior of the pressure relief pipe (200) and is sealed to the interior of the pressure relief pipe (200). A plurality of guide pulleys (310) are evenly distributed on both sides of the sealing cap (321). A connecting block (322) is fixedly installed on the top of the sealing cap (321). Steel wire ropes (323) are rotatably connected to the surfaces of the two connecting blocks (322). The two steel wire ropes (323) are slidably connected to the plurality of guide pulleys (310) on both sides respectively.

3. The pressure-sensing self-relief explosion-proof device according to claim 2, characterized in that, Two support frames (324) are fixedly installed on one side of the combustion furnace (100). The two support frames (324) are located at the other end of the two wire ropes (323). A winding wheel (325) is fixedly installed on the top of the two support frames (324). The two wire ropes (323) are fixedly connected to the two winding wheels (325). A winding motor (326) is fixedly installed on one side of one winding wheel (325).

4. The pressure-sensing self-relief explosion-proof device according to claim 2, characterized in that, A counterweight (327) is fixedly installed on one side of the sealing cover (321), and the counterweight (327) is set in an arc shape.

5. The pressure-sensing self-relief explosion-proof device according to claim 1, characterized in that, A guide frame (328) is fixedly installed on the outside of the pressure relief pipe (200), and the guide frame (328) slides in contact with the counterweight (327).

6. The pressure-sensing self-relief explosion-proof device according to claim 4, characterized in that, A limiting frame (329) is fixedly installed on the top of the combustion furnace (100). The limiting frame (329) is located on one side of the sealing cover (321). A trigger block (3210) is fixedly installed on one side of the limiting frame (329).

7. The pressure-sensing self-relief explosion-proof device according to claim 1, characterized in that, The emergency component (330) includes a rocker wheel (331) disposed on one side of the take-up reel (325), one side of which extends into the interior of the take-up reel (325) and is fixedly connected to the drive end.

8. The pressure-sensing self-relief explosion-proof device according to claim 7, characterized in that, A limiting plate (332) is sleeved on the outer side of the rocker wheel (331). A plurality of limiting grooves are provided on one side of the limiting plate (332), and the plurality of limiting grooves are adapted to the shape of the rocker wheel (331). A spring (334) is fixedly installed on the other side of the limiting plate (332). The other end of the spring (334) is fixedly connected to the adjacent winding wheel (325). A limiting rod (333) is slidably installed on one side of the winding wheel (325). The limiting rod (333) is located on one side of the limiting plate (332), and the limiting rod (333) slides in contact with the limiting groove on one side of the limiting plate (332).

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