Induction type ventilation device for petroleum waste gas treatment

Abstract

The utility model relates to oil waste gas treatment equipment technical field especially relates to an inductive ventilation device for oil waste gas treatment, including shell, switch door, first motor, baffle, wind speed sensor and waste gas concentration sensor etc., shell left end opening is waste gas suction inlet, right end opening is waste gas outlet, the front sidewall of shell is opened to have the overhaul opening in its inner chamber position, and the switch door is rotatably connected through the hinge at the overhaul opening, the first motor is installed in the left side of shell top, and the first motor output shaft stretches into the shell inside. Through the real -time data linkage of waste gas concentration sensor and waste gas concentration sensor, the start -stop of baffle and device is intelligently judged and controlled by remote monitoring system, this not only can automatically start ventilation when waste gas accumulation, ensures the operation safety, can also automatically close after concentration reaches the standard, wind speed is normal, effectively avoided the invalid idling of equipment, realized accurate control and energy conservation, prolonged the service life of equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of petroleum waste gas treatment equipment, and in particular to an induction ventilation device for petroleum waste gas treatment. Background Technology

[0002] In petrochemical, storage, transportation, and refining processes, volatile organic compounds (VOCs) and other petroleum waste gases inevitably escape from storage tanks, loading and unloading facilities, and other locations. These waste gases not only pollute the environment, but some are also flammable and explosive, posing safety hazards. Therefore, it is necessary to install waste gas collection and treatment systems near the escape points, using ventilation devices to promptly transport the waste gases to treatment equipment.

[0003] Currently, ventilation systems commonly used in such locations often operate at a fixed speed continuously or rely on manual start-stop. Fixed-speed operation means the equipment continues to run even when there is no exhaust gas escaping or the concentration is extremely low, resulting in significant energy waste and equipment wear. Manual start-stop, on the other hand, suffers from response delays and reliance on human experience, failing to respond accurately and in real-time to changes in exhaust gas conditions. This can lead to localized accumulation of exhaust gas, creating safety risks, or increasing operating costs due to unnecessary extended operation.

[0004] Therefore, there is an urgent need in the existing technology for a ventilation device that can sense the exhaust gas status in real time and intelligently adjust the operating status accordingly, thereby achieving both safety and energy saving. Utility Model Content

[0005] In order to overcome the shortcomings of existing ventilation devices, such as high energy consumption and inability to automatically adjust according to the actual situation of exhaust gas, this utility model provides an induction ventilation device for petroleum exhaust gas treatment.

[0006] The technical implementation scheme of this utility model is as follows: an induction ventilation device for treating petroleum waste gas, comprising a shell, a switch door, a first motor, a baffle, a wind speed sensor, a waste gas concentration sensor, a second motor, a large gear, a small gear, a rotating rod, blades, and a support frame. The left end opening of the shell is a waste gas inlet, and the right end opening is a waste gas outlet. A maintenance opening is provided on the front side wall of the shell corresponding to its inner cavity position. The switch door is rotatably connected to the maintenance opening via a hinge. The first motor is installed on the top left side of the shell, and the output shaft of the first motor extends into the interior of the shell. A baffle is fixedly connected to the end, forming a circumferential seal with the left port of the housing. From top to bottom, an exhaust gas concentration sensor and a wind speed sensor are installed on the rear side wall of the left port of the housing. A support frame is fixedly connected inside the housing. A second motor is installed on the upper right side of the support frame. A large gear is connected to the output shaft of the second motor. A rotating rod is rotatably connected to the middle of the support frame. A blade is connected to the middle of the rotating rod. A small gear is connected to the right end of the rotating rod. The small gear meshes with the large gear. The first motor, exhaust gas concentration sensor, wind speed sensor and second motor are all electrically connected to the remote monitoring system.

[0007] Furthermore, the edge of the baffle is provided with an elastic sealing layer.

[0008] Furthermore, it also includes a third motor, a reciprocating lead screw, and a scraper. The reciprocating lead screw is rotatably connected to the lower part of the support frame. The third motor is installed on the lower left side wall of the housing. The third motor is electrically connected to the remote monitoring system. The output shaft of the third motor passes through the inner cavity of the housing and is fixedly connected to the left end of the reciprocating lead screw. A scraper is slidably connected to the support frame. The scraper fits snugly against the inner wall of the housing, and the lower end of the scraper is threadedly connected to the reciprocating lead screw.

[0009] Furthermore, the inner ring frame of the scraper is made of metal, and its outer edge is provided with a rubber scraper blade, which is interference-fitted with the inner wall of the housing.

[0010] Furthermore, it also includes a container, a sliding plate, a nozzle, an inclined block, a push rod, a one-way valve, a spring, and a cylinder frame. The container is installed on the front right side of the support frame, and the nozzle is installed at the rear port of the container. The spray direction of the nozzle is directly facing the meshing area of ​​the large gear and the small gear. The sliding plate is sealed and slidably connected to the front port of the container. The cylinder frame is fixedly connected to the outer side of the front of the container. The push rod is slidably connected to the cylinder frame. The rear end of the push rod is connected to the one-way valve. The one-way valve is sealed and slidably engaged with the front port of the container and is located in front of the sliding plate. The front end of the push rod is connected to an inclined block. The inclined block has guide inclined surfaces on both sides and forms a contact engagement relationship with the scraper. The outer wall of the push rod is fitted with a spring. The two ends of the spring are respectively connected to the front wall of the one-way valve and the inside of the cylinder frame.

[0011] Furthermore, the nozzle is an atomizing nozzle.

[0012] This utility model has the following advantages: 1. Through real-time data linkage between the exhaust gas concentration sensor and the exhaust gas concentration sensor, the remote monitoring system can intelligently judge and control the start and stop of the baffle and the device. This can not only automatically start ventilation when exhaust gas accumulates to ensure operational safety, but also automatically shut down after the concentration reaches the standard and the wind speed is normal, effectively avoiding the equipment from running idly, achieving precise control and energy saving, and extending the service life of the equipment.

[0013] 2. The device has a built-in scraper driven by a third motor and a reciprocating screw, which can automatically scrape and clean the inner wall of the housing under the command of the control system or periodically, effectively removing adhering oil and impurities, reducing the frequency and difficulty of manual cleaning, while keeping the pipes unobstructed and ensuring ventilation efficiency. The door can be opened and closed to facilitate the unified cleaning of scraped impurities, making maintenance simple.

[0014] 3. During the reciprocating cleaning process, the scraper intermittently presses out a metered amount of lubricant from the container to the gear meshing point by pushing the inclined block and push rod. This achieves automatic lubrication and maintenance of key transmission components while cleaning the inner wall each time, reducing the risk of gear wear, ensuring transmission stability, and eliminating the need for additional lubrication operations. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the first motor, rotating rod, and blades of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the motor and baffle components of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the small gear, rotating rod, and blade components of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the reciprocating lead screw, support frame, scraper, and other components of this utility model.

[0020] Figure 6 This is a three-dimensional structural diagram of the container, push rod, and cylinder frame components of this utility model.

[0021] Figure 7 This is a three-dimensional structural diagram of the components of this utility model, including the inclined block, one-way valve, and spring.

[0022] In the attached diagrams: 1: Housing, 11: Opening / closing door, 2: First motor, 21: Baffle, 22: Wind speed sensor, 23: Exhaust gas concentration sensor, 3: Second motor, 31: Large gear, 32: Small gear, 33: Rotating rod, 34: Blade, 35: Support frame, 4: Third motor, 41: Reciprocating screw, 42: Scraper, 5: Container, 51: Sliding plate, 52: Nozzle, 53: Inclined block, 54: Push rod, 55: One-way valve, 56: Spring, 57: Cylinder frame. Detailed Implementation

[0023] Example: An induction ventilation device for treating petroleum waste gas, such as Figures 1-4 As shown, the device includes a housing 1, a switch door 11, a first motor 2, a baffle 21, a wind speed sensor 22, a waste gas concentration sensor 23, a second motor 3, a large gear 31, a small gear 32, a rotating rod 33, blades 34, and a support frame 35. The housing 1 is a cylindrical structure with its axis extending horizontally. Its left end opening is a waste gas inlet, and its right end opening is a waste gas outlet. The waste gas outlet is used for a sealed connection with external waste gas treatment equipment. A maintenance opening is provided on the front side wall of the housing 1 corresponding to its inner cavity. A switch door 11 for closing the opening is rotatably connected to the maintenance opening via a hinge. The first motor 2 is installed on the top left side of the housing 1 by screws. The output shaft of the first motor 2 extends into the housing 1 and is located at the left end of the housing 1. A baffle 21 is fixedly connected to the end of the output shaft of the first motor 2. The baffle 21 is a circular structure adapted to the inner cavity of the housing 1. The baffle 21 and the left end of the housing 1 form a circumferential sealing fit. The edge of the baffle 21 is provided with an elastic sealing... A sealing layer is used to enhance the sealing pressure when the baffle 21 is closed. In the initial state, the baffle 21 completely seals the left port of the housing 1. The exhaust gas concentration sensor 23 and the wind speed sensor 22 are installed sequentially from top to bottom on the rear side wall of the left port of the housing 1 by bolts. They are used to collect exhaust gas concentration signals and airflow speed signals, respectively. A support frame 35 is fixedly connected to the inside of the housing 1 along the left and right direction. A second motor 3 is installed on the upper right side of the support frame 35. A large gear 31 is keyed to the output shaft of the second motor 3. A rotating rod 33 is rotatably connected to the middle of the support frame 35 along the left and right direction. A blade 34 is fixedly connected to the middle of the rotating rod 33. A small gear 32 is fixedly connected to the right end of the rotating rod 33. The small gear 32 and the large gear 31 mesh with each other. The first motor 2, the exhaust gas concentration sensor 23, the wind speed sensor 22 and the second motor 3 are all electrically connected to the remote monitoring system. The remote monitoring system has a built-in controller and a data acquisition module for receiving sensor signals and outputting control commands.

[0024] like Figure 2 and Figure 5As shown, it also includes a third motor 4, a reciprocating screw 41, and a scraper 42. The reciprocating screw 41 is rotatably connected to the lower part of the support frame 35 in the left and right directions. The third motor 4 is installed on the lower left side wall of the housing 1 by screws. The third motor 4 is electrically connected to the remote monitoring system. The output shaft of the third motor 4 passes through the inner cavity of the housing 1, and the output shaft of the third motor 4 is fixedly connected to the left end of the reciprocating screw 41. The scraper 42 is slidably connected to the support frame 35 in the left and right directions. The scraper 42 has a ring structure and forms a close fit with the inner wall of the housing 1. The lower end of the scraper 42 is threaded to the reciprocating screw 41. The inner ring skeleton of the scraper 42 is made of metal, and its outer edge is provided with a rubber scraper. The scraper is interference-fitted with the inner wall of the housing 1. The metal skeleton ensures the structural strength of the scraper 42 and the stability during reciprocating motion, while the soft scraper can effectively remove the adhering substances without causing hard scratches to the inner wall of the housing 1.

[0025] like Figure 2 , Figure 6 and Figure 7 As shown, it also includes a container 5, a sliding plate 51, a nozzle 52, a wedge block 53, a push rod 54, a one-way valve 55, a spring 56, and a cylinder frame 57. The container 5 is detachably mounted on the front right side of the support frame 35 via bolts. The nozzle 52 is installed at the rear port of the container 5. The spray direction of the nozzle 52 is directly facing the meshing area of ​​the large gear 31 and the small gear 32. The nozzle 52 is an atomizing nozzle, which can atomize the lubricant into tiny droplets, making it more evenly cover the meshing surface of the gears, improving the lubrication effect and reducing lubricant consumption. The sliding plate 51 is sealed and slidably connected to the front port of the container 5. The cylinder frame 57 is fixedly connected to the outer front part of the container 5. The cylinder frame 57 has a front-to-back direction along the top. A push rod 54 is slidably connected, and a one-way valve 55 is fixedly connected to the rear end of the push rod 54. The one-way valve 55 is in a sealed sliding fit with the front port of the container 5 and is located in front of the sliding plate 51. The one-way valve 55 only allows gas to enter the chamber between the one-way valve 55 and the sliding plate 51 from the outside. A wedge block 53 is welded to the front end of the push rod 54. The left and right side walls of the wedge block 53 are provided with guide slopes and form a contact fit with the scraper 42. A spring 56 is sleeved on the outer side wall of the push rod 54. The rear end of the spring 56 is fixedly connected to the front side wall of the one-way valve 55, and the front end of the spring 56 is fixedly connected to the inner front wall of the cylinder frame 57. The chamber in the container 5 located between the nozzle 52 and the sliding plate 51 is filled with lubricating fluid.

[0026] Before this device is put into use, installation and parameter presets must be completed: the device is fixedly installed near the oil fumes escaping point, ensuring that the horizontal distance between the fumes inlet of the casing 1 and the fumes escaping point does not exceed 5 meters. The fumes outlet is sealed to the external fumes treatment equipment via a flange. The "start-up wind speed threshold", "shut-down wind speed threshold", "fumes safety concentration threshold", and cleaning interval parameters are preset through the remote monitoring system. The start-up wind speed threshold is lower than the normal ambient airflow speed, and the shut-down wind speed threshold is higher than the start-up wind speed threshold. When the device is in standby mode, the baffle 21 keeps the left port of the casing 1 completely closed. The wind speed sensor 22 and the fumes concentration sensor 23 continuously collect real-time data and transmit it to the remote monitoring system. When the remote monitoring system determines that the real-time wind speed at the fumes inlet is lower than the start-up wind speed threshold, it is determined that fumes have accumulated, causing local airflow stagnation. The system immediately outputs a start command: the first motor 2 starts and drives the baffle 21 to rotate around its axis. The opening size is adjusted by adjusting the angle between the baffle 21 and the left port of the housing 1, thereby controlling the air intake area. At the same time, the second motor 3 starts, and its output shaft drives the large gear 31 to rotate. Through the meshing transmission between the large gear 31 and the small gear 32, the rotating rod 33 and the blades 34 rotate synchronously. The rotation of the blades 34 generates negative pressure, which draws the accumulated petroleum waste gas into the housing 1 through the waste gas inlet, and finally delivers it to the waste gas treatment equipment through the waste gas outlet, completing the collection and diversion of waste gas. When the remote monitoring system detects that the real-time wind speed at the waste gas inlet is higher than the closing wind speed threshold and this state continues for a preset time (such as 30 seconds), and at the same time the waste gas concentration sensor 23 detects that the waste gas concentration is lower than the safe concentration threshold, the system determines that the waste gas accumulation has been eliminated and outputs a stop command: the first motor 2 rotates in reverse to drive the baffle 21 to reset, gradually closing the left port of the housing 1, and simultaneously controlling the second motor 3 to stop running, the blades 34 to stop rotating, and the device returns to standby state.

[0027] When the running time reaches the preset cleaning interval, the remote monitoring system outputs a cleaning command: the third motor 4 starts, and its output shaft drives the reciprocating screw 41 to rotate. The reciprocating screw 41, through threaded engagement, drives the scraper 42 to move back and forth linearly along the support frame 35. The scraper 42 can scrape off the oil and smoke impurities attached to the inner wall. The scraped impurities fall to the bottom of the housing 1 under the action of gravity and accumulate. During the reciprocating movement of the scraper 42, when the end of the scraper 42 contacts the guide slope of the inclined block 53, the scraper 42 generates a backward pushing force on the inclined block 53, pushing the inclined block 53 and the push rod 54 to slide backward along the cylinder frame 57. The push rod 54 drives the one-way valve 55 to move backward synchronously, and the spring 56 is compressed. Due to the one-way conduction characteristic of the one-way valve 55, when it moves backward, it will squeeze the chamber between the one-way valve 55 and the sliding plate 51, causing the pressure in the chamber to increase, and thus... The sliding plate 51 is pushed to move backward along the inner wall of the container 5. The sliding plate 51 squeezes the lubricating oil in the container 5, causing the lubricating oil to be sprayed out in a mist form through the nozzle 52 to the meshing point of the large gear 31 and the small gear 32, thereby lubricating the transmission components. When the scraper 42 disengages from the inclined block 53, the spring 56 returns to its original position under the action of elastic force, driving the inclined block 53, the push rod 54 and the one-way valve 55 to slide forward. At this time, a negative pressure is formed in the chamber between the one-way valve 55 and the sliding plate 51. External air enters the chamber through the one-way valve 55 to replenish it, preparing for the next lubrication. The sliding plate 51 remains stationary under the action of the viscosity of the lubricating oil and the chamber pressure, ensuring that each movement of the inclined block 53 triggers only one lubrication action. During the operation and maintenance of the device, the staff can open the switch door 11 to clean the impurities accumulated at the bottom of the shell 1 and replace the container 5 to keep the lubricating fluid sufficient.

Claims

1. An induction-type ventilation device for treating petroleum waste gas, characterized in that: The device includes a housing (1), a switch door (11), a first motor (2), a baffle (21), a wind speed sensor (22), a waste gas concentration sensor (23), a second motor (3), a large gear (31), a small gear (32), a rotating rod (33), blades (34), and a support frame (35). The left end of the housing (1) is the waste gas inlet, and the right end is the waste gas outlet. The front side wall of the housing (1) has an inspection opening corresponding to its inner cavity position. The switch door (11) is connected to the inspection opening by a hinge. The first motor (2) is installed on the top left side of the housing (1). The output shaft of the first motor (2) extends into the interior of the housing (1). The end of the output shaft of the first motor (2) is fixedly connected to the baffle (21). The baffle (21) is connected to the housing (1). The left port forms a circumferential seal. The exhaust gas concentration sensor (23) and the wind speed sensor (22) are installed sequentially from top to bottom on the rear side wall of the left port of the housing (1). A support frame (35) is fixedly connected inside the housing (1). A second motor (3) is installed on the upper right side of the support frame (35). A large gear (31) is connected to the output shaft of the second motor (3). A rotating rod (33) is rotatably connected in the middle of the support frame (35). A blade (34) is connected in the middle of the rotating rod (33). A small gear (32) is connected to the right end of the rotating rod (33). The small gear (32) meshes with the large gear (31). The first motor (2), the exhaust gas concentration sensor (23), the wind speed sensor (22) and the second motor (3) are all electrically connected to the remote monitoring system.

2. The induction ventilation device for treating petroleum waste gas according to claim 1, characterized in that: The edge of the baffle (21) is provided with an elastic sealing layer.

3. The induction ventilation device for treating petroleum waste gas according to claim 2, characterized in that: It also includes a third motor (4), a reciprocating screw (41) and a scraper (42). The lower part of the support frame (35) is rotatably connected to the reciprocating screw (41). The third motor (4) is installed on the lower left side wall of the housing (1). The third motor (4) is electrically connected to the remote monitoring system. The output shaft of the third motor (4) passes through the inner cavity of the housing (1) and is fixedly connected to the left end of the reciprocating screw (41). The scraper (42) is slidably connected on the support frame (35). The scraper (42) fits snugly against the inner wall of the housing (1). The lower end of the scraper (42) is threadedly connected to the reciprocating screw (41).

4. The induction ventilation device for treating petroleum waste gas according to claim 3, characterized in that: The inner ring skeleton of the scraper (42) is made of metal, and its outer edge is provided with a rubber scraper blade, which is interference-fitted with the inner wall of the housing (1).

5. An induction ventilation device for treating petroleum waste gas according to claim 4, characterized in that: It also includes a container (5), a sliding plate (51), a nozzle (52), a wedge (53), a push rod (54), a one-way valve (55), a spring (56), and a cylinder frame (57). The container (5) is installed on the right side of the front part of the support frame (35), and the nozzle (52) is installed at the rear port of the container (5). The spray direction of the nozzle (52) is directly facing the meshing area of ​​the large gear (31) and the small gear (32). The sliding plate (51) is sealed and slidably connected at the front port of the container (5), and the cylinder frame (57) is fixedly connected to the outer side of the front part of the container (5). A push rod (54) is slidably connected to the cylinder frame (57). A one-way valve (55) is connected to the rear end of the push rod (54). The one-way valve (55) is sealed and slidably engaged with the front port of the container (5) and is located in front of the sliding plate (51). A wedge (53) is connected to the front end of the push rod (54). The two sides of the wedge (53) are provided with guide slopes and form a contact engagement with the scraper (42). A spring (56) is sleeved on the outer side wall of the push rod (54). The two ends of the spring (56) are respectively connected to the front wall of the one-way valve (55) and the inside of the cylinder frame (57).

6. An induction ventilation device for treating petroleum waste gas according to claim 5, characterized in that: The nozzle (52) is an atomizing nozzle.

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