A multi-cylinder centrifugal compressor for coke oven exhaust gas and its compression process

Abstract

This invention belongs to the field of centrifugal compressors, specifically a multi-cylinder centrifugal compressor for coke oven exhaust gas. Addressing the issue of existing centrifugal compressors lacking backup units, when a compressor malfunctions or requires maintenance, the unit must shut down. If repairs cannot be completed quickly enough, serious losses can occur. Prolonged operation of a single centrifugal compressor can damage internal components. The proposed solution comprises an L-shaped plate and three centrifugal compressor bodies, all fixedly connected to the top of the L-shaped plate and used for gas compression. By setting up a control mechanism, an appropriate number of centrifugal compressor bodies are selected based on the operating load. If one centrifugal compressor body requires maintenance or malfunctions, the entire unit does not need to be shut down. The drive mechanism is directly controlled to stop and repair the malfunctioning compressor body, thus preventing damage to components caused by prolonged operation of the compressor body.

Description

Technical Field

[0001] This invention relates to the field of centrifugal compressor technology, and in particular to a multi-cylinder centrifugal compressor for coke oven exhaust gas and its compression process. Background Technology

[0002] Centrifugal compressors, also known as "vortex compressors," are a type of compressor. Their structure and operating principle are similar to centrifugal blowers, but they are always multi-stage, enabling them to achieve higher gas pressures, larger throughput, and higher efficiency.

[0003] The utility model with announcement number CN202381350U belongs to the field of compressors, specifically a centrifugal compressor for isobutane and butyl rubber. This centrifugal compressor includes a rotor and a stator, and is a four-stage horizontally split compressor. The centrifugal compressor is divided into four stages and eight phases. Each impeller and its corresponding stator form one stage, and every two stages constitute one stage. Each stage has one inlet and one outlet air duct, for a total of eight air ducts. The gas entering the centrifugal compressor is compressed in each stage, cooled, and then enters the next stage for compression. This utility model is a four-stage horizontally split centrifugal compressor with multi-stage compression and cooling at each stage, ensuring that the gas temperature does not exceed the set value throughout the compression process, and reducing mechanical losses and wasted energy consumption. The overall efficiency is increased by approximately 7.5%.

[0004] Because coke oven exhaust gas contains a large amount of tar, dust, and naphthalene, the selection criteria for coke oven gas compressors are relatively strict. There are two existing coke oven gas compression processes: one uses a water-spray screw compressor and a centrifugal compressor, and the other uses two centrifugal compressors in series. Both processes have the following drawbacks: 1. When the centrifugal compressor malfunctions or needs maintenance, the unit must be shut down. If it cannot be repaired in a short time, it will cause serious losses. 2. If a single centrifugal compressor operates for too long, the internal temperature of the compressor may become too high, which may damage the device and result in waste.

[0005] To address the aforementioned problems, this invention proposes a multi-cylinder centrifugal compressor for coke oven exhaust gas and a compression process. Summary of the Invention

[0006] This invention provides a multi-cylinder centrifugal compressor for coke oven exhaust gas and a compression process, which solves the shortcomings of the prior art. When the centrifugal compressor malfunctions or needs maintenance, the equipment needs to be shut down and cannot be repaired in a short time, which will cause certain losses. Long-term operation of a single centrifugal compressor will lead to damage to the internal components of the compressor.

[0007] This invention provides the following technical solution: A multi-cylinder centrifugal compressor for coke oven exhaust gas, comprising an L-shaped plate; Three centrifugal compressor bodies, all three of which are fixedly connected to the top of the L-shaped plate and used for compressing gas; A purification mechanism is fixedly connected to one side of the L-shaped plate and is used to purify exhaust gas. A rectangular tube, which is fixedly connected to one side of the purification mechanism and used to transport gas; Three second air inlet pipes are fixedly connected to the air inlets of three centrifugal compressor bodies, and the other end of each of the three second air inlet pipes is connected to the bottom of a rectangular tube. Two air outlet pipes are connected to the air outlets of two centrifugal compressor bodies near the purification mechanism, and the other end of each air outlet pipe is connected to one side of a rectangular tube. Three control mechanisms, all of which are located at the top of the rectangular tube; Three drive mechanisms are provided, all of which are located on one side of the L-shaped plate and are used to control the start-up of the centrifugal compressor body.

[0008] In one possible design, the drive mechanism includes a servo motor, a rotating shaft, a first gear, a second gear, and a main shaft. The main shaft is located inside the centrifugal compressor body. The second gear is fixedly sleeved on the outer wall of the main shaft. The servo motor is fixedly connected to one side of an L-shaped plate. The rotating shaft rotates through the L-shaped plate and is fixedly connected to the output shaft of the servo motor. The first gear is fixedly sleeved on the outer wall of the rotating shaft and meshes with the second gear to drive the centrifugal compressor body to work normally.

[0009] In one possible design, the purification mechanism includes a first air inlet pipe, a gas holder, a rectangular hole, a partition, multiple first pretreatment fiber beds, and multiple second pretreatment fiber beds. The gas holder is fixedly connected to one side of an L-shaped plate, the first air inlet pipe is fixedly connected to the top of the gas holder, the rectangular hole is opened on one side of the gas holder and connected to one end of the rectangular pipe, the partition is fixedly connected to the inner wall of the top of the gas holder, and the multiple first and second pretreatment fiber beds are respectively fixedly connected to both sides of the partition for purifying exhaust gas.

[0010] In one possible design, the control mechanism includes a first baffle, a second round rod, a first rack, a rotating rod, a vertical plate, a second rack, a third gear, a first round rod, a tension spring, a second baffle, and a rectangular box. The rectangular box is fixedly connected to the top of a rectangular tube, the vertical plate is fixedly connected to the top of the rectangular box, the rotating rod is rotatably connected to one side of the vertical plate, the third gear is fixedly sleeved on the outer wall of the rotating rod, the first rack and the second rack are both slidably connected to one side of the vertical plate and both mesh with the third gear, the first round rod is fixedly connected to the bottom of the second rack, the second baffle is fixedly connected to the bottom of the first round rod, the second baffle is slidably connected to the inner wall of one side of the rectangular box, the second round rod is fixedly connected to the bottom of the first rack, the first baffle is fixedly connected to the bottom of the second round rod, and the tension spring is fixedly connected between the top inner wall of the rectangular box and the top of the second baffle. The tension spring is sleeved on the first round rod and is used to switch the air intake.

[0011] In one possible design, the control mechanism further includes a crossbar and an electric push rod. The crossbar is fixedly connected to one side of the first rack, and the electric push rod is fixedly connected to the top of the rectangular tube. The piston rod of the electric push rod is fixedly connected to the bottom of the crossbar for electric control, saving manpower.

[0012] In one possible design, one end of the rectangular tube is provided with an air vent to facilitate the final discharge of gas.

[0013] In one possible design, a sealing gasket is fixedly connected to the bottom of the first baffle to improve the sealing performance of the device.

[0014] A multi-cylinder centrifugal compression process for coke oven exhaust gas specifically includes the following steps: S1. The exhaust gas enters the interior of the gas holder through the first inlet pipe, and is filtered through multiple first pretreatment fiber beds and multiple second pretreatment fiber beds in sequence to purify the tar, dust and naphthalene contained in the coke oven exhaust gas. It enters the interior of the rectangular tube through the rectangular hole. The two control mechanisms near the purification mechanism are activated. At this time, the corresponding two first baffles are raised and the second baffles are lowered to block the interior of the rectangular tube. The servo motor is activated. The output shaft of the servo motor drives the rotating shaft to rotate. The rotating shaft drives the first gear to rotate. The first gear drives the second gear to rotate. The second gear drives the main shaft to rotate, thereby completing the compression process. After being compressed in series by two of the control mechanisms, the exhaust gas returns to the interior of the rectangular tube through the outlet pipe and is finally discharged through the outlet hole. S2. When a centrifugal compressor body needs maintenance or malfunctions, the electric push rods corresponding to two centrifugal compressor bodies are closed, so that the corresponding second air inlet pipe is blocked and cannot continue to intake air. At this time, the last control mechanism can be activated to finally realize the function of compressing gas. This can give maintenance time without stopping the machine and will not cause too much loss. At the same time, the intermittent operation of the three centrifugal compressor bodies can also effectively prevent the centrifugal compressor bodies from overheating and being damaged. S3. The specific operation of the start control mechanism is as follows: start the electric push rod, the piston rod of the electric push rod drives the horizontal bar to move vertically upward, the horizontal bar drives the first rack to move vertically upward, the first rack drives the third gear to rotate, the third gear drives the second rack to move vertically downward, the first rack drives the second round rod to move vertically upward, the second round rod drives the first baffle to move vertically upward, the second rack drives the first round rod to move vertically downward, the first round rod drives the second baffle to move vertically downward to block the air outlet, and at the same time the tension spring is stretched to facilitate the rebound of the device.

[0015] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the invention.

[0016] In this invention, the exhaust gas enters the interior of the gas holder through the first inlet pipe, and is filtered through multiple first pretreatment fiber beds and multiple second pretreatment fiber beds in sequence to purify the tar, dust and naphthalene contained in the coke oven exhaust gas. It then enters the interior of the rectangular tube through the rectangular hole. Two control mechanisms near the purification mechanism are activated. At this time, the corresponding two first baffles are raised and the second baffles are lowered to block the interior of the rectangular tube. The servo motor is activated, and the output shaft of the servo motor drives the rotating shaft to rotate. The rotating shaft drives the first gear to rotate, the first gear drives the second gear to rotate, and the second gear drives the main shaft to rotate, thereby completing the compression process. After being compressed in series by two of the control mechanisms, the exhaust gas returns to the interior of the rectangular tube through the outlet pipe and is finally discharged through the outlet hole. In this invention, when a centrifugal compressor body needs maintenance or malfunctions, the electric push rods corresponding to one or two centrifugal compressor bodies are closed, causing the corresponding second air inlet pipe to be blocked and unable to continue to intake air. At this time, the function of compressing gas can be achieved by activating the last control mechanism. This allows for a certain amount of time for maintenance without stopping the machine and without causing too much loss. At the same time, the intermittent operation of the three centrifugal compressor bodies can also effectively prevent the centrifugal compressor bodies from overheating and being damaged. In this invention, the specific operation of the start control mechanism is as follows: the electric push rod is started, the piston rod of the electric push rod drives the horizontal bar to move vertically upward, the horizontal bar drives the first rack to move vertically upward, the first rack drives the third gear to rotate, the third gear drives the second rack to move vertically downward, the first rack drives the second round rod to move vertically upward, the second round rod drives the first baffle to move vertically upward, the second rack drives the first round rod to move vertically downward, the first round rod drives the second baffle to move vertically downward to block the air outlet, and at the same time the tension spring is stretched to facilitate the rebound of the device; In this invention, by setting up a control mechanism, two of the three centrifugal compressor bodies can be easily selected for use. This ensures that when one centrifugal compressor body needs maintenance or malfunctions, there is no need to stop the machine; the working centrifugal compressor body can be switched directly for maintenance. At the same time, it can also avoid the situation where the centrifugal compressor body operates for too long, resulting in excessively high temperature. It is convenient to use. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram from a first-view perspective of a multi-cylinder centrifugal compressor for coke oven exhaust gas provided in an embodiment of the present invention. Figure 2 This is a three-dimensional structural schematic diagram from a second perspective of a multi-cylinder centrifugal compressor for coke oven exhaust gas provided in an embodiment of the present invention. Figure 3 This is a three-dimensional structural diagram of the centrifugal compressor body in a multi-cylinder centrifugal compressor for coke oven exhaust gas provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of the purification mechanism in a multi-cylinder centrifugal compressor for coke oven exhaust gas provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of three control mechanisms in a multi-cylinder centrifugal compressor for coke oven exhaust gas provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the first baffle and the second baffle in a multi-cylinder centrifugal compressor for coke oven exhaust gas provided in an embodiment of the present invention.

[0018] Figure label: 1. L-shaped plate; 2. Drive mechanism; 201. Servo motor; 202. Rotating shaft; 203. First gear; 204. Second gear; 205. Main shaft; 3. Purification mechanism; 301. First air inlet pipe; 302. Gas holder; 303. First pretreatment fiber bed; 304. Partition plate; 305. Second pretreatment fiber bed; 306. Rectangular hole; 4. Centrifugal compressor body; 5. Rectangular tube; 6. Air outlet pipe; 7. Control mechanism; 701. Vertical plate; 702. Horizontal bar; 703. Electric push rod; 704. First rack; 705. Rotating rod; 706. Second rack; 707. Third gear; 708. First round rod; 709. Tension spring; 710. Second baffle; 711. Rectangular box; 712. Air outlet; 713. First baffle; 714. Second round rod; 8. Second air inlet pipe. Detailed Implementation

[0019] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0020] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the devices are connected to each other and their relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of the present invention, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, and are not intended to 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 embodiments of the present invention.

[0021] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0022] Example 1 Reference Figure 1-6 A multi-cylinder centrifugal compressor for coke oven exhaust gas, comprising an L-shaped plate 1; Three centrifugal compressor bodies 4 are fixedly connected to the top of the L-shaped plate 1 and are used to compress gas; Purification mechanism 3 is fixedly connected to one side of L-shaped plate 1 and is used to purify exhaust gas. Purification mechanism 3 includes a first air inlet pipe 301, a gas holder 302, a rectangular hole 306, a partition 304, multiple first pretreatment fiber beds 303, and multiple second pretreatment fiber beds 305. The gas holder 302 is fixedly connected to one side of L-shaped plate 1. The first air inlet pipe 301 is fixedly connected to the top of the gas holder 302. The rectangular hole 306 is opened on one side of the gas holder 302 and connected to one end of the rectangular pipe 5. The partition 304 is fixedly connected to the inner wall of the top of the gas holder 302. Multiple first pretreatment fiber beds 303 and second pretreatment fiber beds 305 are respectively fixedly connected to both sides of the partition 304 for purifying exhaust gas. Rectangular tube 5 is fixedly connected to one side of the purification mechanism 3 and is used to transmit gas; Three second air inlet pipes 8 are fixedly connected to the air inlets of three centrifugal compressor bodies 4, and the other ends of the three second air inlet pipes 8 are connected to the bottom of the rectangular tube 5. Two air outlet pipes 6 are connected to the air outlets of two centrifugal compressor bodies 4 near the purification mechanism 3, and the other end of each air outlet pipe 6 is connected to one side of a rectangular tube 5. Three control mechanisms 7 are located at the top of the rectangular tube 5. Each control mechanism 7 includes a first baffle 713, a second round rod 714, a first rack 704, a rotating rod 705, a vertical plate 701, a second rack 706, a third gear 707, a first round rod 708, a tension spring 709, a second baffle 710, and a rectangular box 711. The rectangular box 711 is fixedly connected to the top of the rectangular tube 5. The vertical plate 701 is fixedly connected to the top of the rectangular box 711. The rotating rod 705 is rotatably connected to one side of the vertical plate 701. The third gear 707 is fixedly sleeved on the outer wall of the rotating rod 705. The first rack 704 and the second rack 706 are both slidably connected to one side of the vertical plate 701 and both mesh with the third gear 707. The first round rod 708 is fixedly connected to the bottom of the second rack 706. The control mechanism 7 includes a second baffle 710 fixedly connected to the bottom of the first round rod 708, a second baffle 710 slidably connected to the inner wall of one side of the rectangular box 711, a second round rod 714 fixedly connected to the bottom of the first rack 704, a first baffle 713 fixedly connected to the bottom of the second round rod 714, a tension spring 709 fixedly connected between the top inner wall of the rectangular box 711 and the top of the second baffle 710, and the tension spring 709 sleeved on the first round rod 708 for switching the air inlet. The control mechanism 7 also includes a crossbar 702 and an electric push rod 703. The crossbar 702 is fixedly connected to one side of the first rack 704, and the electric push rod 703 is fixedly connected to the top of the rectangular tube 5. The piston rod of the electric push rod 703 is fixedly connected to the bottom of the crossbar 702 for electric control, saving manpower. Three drive mechanisms 2 are all located on one side of the L-shaped plate 1 and are used to control the start of the centrifugal compressor body 4. Each drive mechanism 2 includes a servo motor 201, a rotating shaft 202, a first gear 203, a second gear 204, and a main shaft 205. The main shaft 205 is located inside the centrifugal compressor body 4. The second gear 204 is fixedly sleeved on the outer wall of the main shaft 205. The servo motor 201 is fixedly connected to one side of the L-shaped plate 1. The rotating shaft 202 rotates through the L-shaped plate 1 and is fixedly connected to the output shaft of the servo motor 201. The first gear 203 is fixedly sleeved on the outer wall of the rotating shaft 202 and meshes with the second gear 204 to drive the centrifugal compressor body 4 to work normally.

[0023] Example 2 Reference Figure 1-6 A multi-cylinder centrifugal compressor for coke oven exhaust gas, comprising an L-shaped plate 1; Three centrifugal compressor bodies 4 are fixedly connected to the top of the L-shaped plate 1 and are used to compress gas; Purification mechanism 3 is fixedly connected to one side of L-shaped plate 1 and is used to purify exhaust gas. Purification mechanism 3 includes a first air inlet pipe 301, a gas holder 302, a rectangular hole 306, a partition 304, multiple first pretreatment fiber beds 303, and multiple second pretreatment fiber beds 305. The gas holder 302 is fixedly connected to one side of L-shaped plate 1. The first air inlet pipe 301 is fixedly connected to the top of the gas holder 302. The rectangular hole 306 is opened on one side of the gas holder 302 and connected to one end of the rectangular pipe 5. The partition 304 is fixedly connected to the inner wall of the top of the gas holder 302. Multiple first pretreatment fiber beds 303 and second pretreatment fiber beds 305 are respectively fixedly connected to both sides of the partition 304 for purifying exhaust gas. Rectangular tube 5 is fixedly connected to one side of the purification mechanism 3 and is used to transmit gas; Three second air inlet pipes 8 are fixedly connected to the air inlets of three centrifugal compressor bodies 4, and the other ends of the three second air inlet pipes 8 are connected to the bottom of the rectangular tube 5. Two air outlet pipes 6 are connected to the air outlets of two centrifugal compressor bodies 4 near the purification mechanism 3, and the other end of each air outlet pipe 6 is connected to one side of a rectangular tube 5. Three control mechanisms 7 are located at the top of the rectangular tube 5. Each control mechanism 7 includes a first baffle 713, a second round rod 714, a first rack 704, a rotating rod 705, a vertical plate 701, a second rack 706, a third gear 707, a first round rod 708, a tension spring 709, a second baffle 710, and a rectangular box 711. The rectangular box 711 is fixedly connected to the top of the rectangular tube 5. The vertical plate 701 is fixedly connected to the top of the rectangular box 711. The rotating rod 705 is rotatably connected to one side of the vertical plate 701. The third gear 707 is fixedly sleeved on the outer wall of the rotating rod 705. The first rack 704 and the second rack 706 are both slidably connected to one side of the vertical plate 701 and both mesh with the third gear 707. The first round rod 708 is fixedly connected to the bottom of the second rack 706. The control mechanism 7 includes a second baffle 710 fixedly connected to the bottom of the first round rod 708, a second baffle 710 slidably connected to the inner wall of one side of the rectangular box 711, a second round rod 714 fixedly connected to the bottom of the first rack 704, a first baffle 713 fixedly connected to the bottom of the second round rod 714, a tension spring 709 fixedly connected between the top inner wall of the rectangular box 711 and the top of the second baffle 710, and the tension spring 709 sleeved on the first round rod 708 for switching the air inlet. The control mechanism 7 also includes a crossbar 702 and an electric push rod 703. The crossbar 702 is fixedly connected to one side of the first rack 704, and the electric push rod 703 is fixedly connected to the top of the rectangular tube 5. The piston rod of the electric push rod 703 is fixedly connected to the bottom of the crossbar 702 for electric control, saving manpower. Three drive mechanisms 2 are all located on one side of the L-shaped plate 1 and are used to control the start of the centrifugal compressor body 4. Each drive mechanism 2 includes a servo motor 201, a rotating shaft 202, a first gear 203, a second gear 204, and a main shaft 205. The main shaft 205 is located inside the centrifugal compressor body 4. The second gear 204 is fixedly sleeved on the outer wall of the main shaft 205. The servo motor 201 is fixedly connected to one side of the L-shaped plate 1. The rotating shaft 202 rotates through the L-shaped plate 1 and is fixedly connected to the output shaft of the servo motor 201. The first gear 203 is fixedly sleeved on the outer wall of the rotating shaft 202 and meshes with the second gear 204 to drive the centrifugal compressor body 4 to work normally. One end of the rectangular tube 5 is provided with an air outlet 712 to facilitate the final discharge of gas. A sealing gasket is fixedly connected to the bottom of the first baffle 713 to improve the sealing performance of the device.

[0024] A multi-cylinder centrifugal compression process for coke oven exhaust gas specifically includes the following steps: S1. The exhaust gas enters the interior of the gas holder 302 through the first intake pipe 301, and is filtered through multiple first pretreatment fiber beds 303 and multiple second pretreatment fiber beds 305 in sequence to purify the tar, dust and naphthalene contained in the coke oven exhaust gas. It enters the interior of the rectangular tube 5 through the rectangular hole 306. The two control mechanisms 7 near the purification mechanism 3 are activated. At this time, the corresponding two first baffles 713 are raised, and the second baffles 710 are lowered to block the interior of the rectangular tube 5. The servo motor 201 is activated. The output shaft of the servo motor 201 drives the rotating shaft 202 to rotate. The rotating shaft 202 drives the first gear 203 to rotate. The first gear 203 drives the second gear 204 to rotate. The second gear 204 drives the main shaft 205 to rotate, thereby completing the compression process. After being compressed in series by two of the control mechanisms 7, the exhaust gas returns to the interior of the rectangular tube 5 through the exhaust pipe 6 and is finally discharged through the exhaust hole 712. S2. When a centrifugal compressor body 4 needs maintenance or malfunctions, the electric push rod 703 corresponding to one or two centrifugal compressor bodies 4 is closed, so that the corresponding second air inlet pipe 8 is blocked and cannot continue to intake air. At this time, the last control mechanism 7 can be activated to finally realize the function of compressing gas. This allows for a certain amount of time for maintenance, without stopping the machine and causing too much loss. At the same time, the intermittent operation of the three centrifugal compressor bodies 4 can also effectively prevent the centrifugal compressor bodies 4 from overheating and being damaged. S3. The specific operation of the start control mechanism 7 is as follows: start the electric push rod 703, the piston rod of the electric push rod 703 drives the horizontal bar 702 to move vertically upward, the horizontal bar 702 drives the first rack 704 to move vertically upward, the first rack 704 drives the third gear 707 to rotate, the third gear 707 drives the second rack 706 to move vertically downward, the first rack 704 drives the second round rod 714 to move vertically upward, the second round rod 714 drives the first baffle 713 to move vertically upward, the second rack 706 drives the first round rod 708 to move vertically downward, the first round rod 708 drives the second baffle 710 to move vertically downward to block the air outlet 712, and at the same time the tension spring 709 is stretched to facilitate the rebound of the device.

[0025] However, as is well known to those skilled in the art, the working principle and wiring method of the electric push rod 703 and the centrifugal compressor body 4 are commonplace and are all conventional means or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0026] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A coke oven tail gas multi-cylinder centrifugal compressor, characterized in that, include: L-shaped plate (1); Three centrifugal compressor bodies (4) are fixedly connected to the L-shaped plate (1) and used to compress gas; Purification mechanism (3), which is fixedly connected to one side of L-shaped plate (1) and used to purify exhaust gas; A rectangular tube (5) is fixedly connected to one side of the purification mechanism (3) and used to transmit gas; Three second air inlet pipes (8) are fixedly connected to the air inlets of three centrifugal compressor bodies (4), and the other ends of the three second air inlet pipes (8) are connected to the bottom of the rectangular tube (5); Two air outlet pipes (6) are connected to the air outlets of two centrifugal compressor bodies (4) near the purification mechanism (3), and the other end of each air outlet pipe (6) is connected to one side of a rectangular tube (5). Three control mechanisms (7) are located at the top of the rectangular tube (5). Each control mechanism (7) includes a first baffle (713), a second round rod (714), a first rack (704), a rotating rod (705), a vertical plate (701), a second rack (706), a third gear (707), a first round rod (708), a tension spring (709), a second baffle (710), and a rectangular box (711). The rectangular box (711) is fixedly connected to the top of the rectangular tube (5). The vertical plate (701) is fixedly connected to the top of the rectangular box (711). The rotating rod (705) is rotatably connected to one side of the vertical plate (701). The third gear (707) is fixedly sleeved on the outer wall of the rotating rod (705). The first rack (713) is fixedly connected to the top of the rectangular tube (5). 04) Both the first and second racks (706) are slidably connected to one side of the vertical plate (701) and mesh with the third gear (707). The first round rod (708) is fixedly connected to the bottom of the second rack (706). The second baffle (710) is fixedly connected to the bottom of the first round rod (708). The second baffle (710) is slidably connected to the inner wall of one side of the rectangular box (711). The second round rod (714) is fixedly connected to the bottom of the first rack (704). The first baffle (713) is fixedly connected to the bottom of the second round rod (714). The tension spring (709) is fixedly connected between the top inner wall of the rectangular box (711) and the top of the second baffle (710). The tension spring (709) is sleeved on the first round rod (708). Three drive mechanisms (2) are set on one side of the L-shaped plate (1) and are used to control the start of the centrifugal compressor body (4).

2. A coke oven tail gas multi-cylinder centrifugal compressor according to claim 1, characterized in that, The drive mechanism (2) includes a servo motor (201), a rotating shaft (202), a first gear (203), a second gear (204), and a main shaft (205). The main shaft (205) is located inside the centrifugal compressor body (4). The second gear (204) is fixedly sleeved on the outer wall of the main shaft (205). The servo motor (201) is fixedly connected to one side of the L-shaped plate (1). The rotating shaft (202) rotates through the L-shaped plate (1) and is fixedly connected to the output shaft of the servo motor (201). The first gear (203) is fixedly sleeved on the outer wall of the rotating shaft (202) and meshes with the second gear (204).

3. A coke oven tail gas multi-cylinder centrifugal compressor according to claim 1, characterized in that, The purification mechanism (3) includes a first air inlet pipe (301), a gas holder (302), a rectangular hole (306), a partition (304), multiple first pretreatment fiber beds (303), and multiple second pretreatment fiber beds (305). The gas holder (302) is fixedly connected to one side of the L-shaped plate (1). The first air inlet pipe (301) is fixedly connected to the top of the gas holder (302). The rectangular hole (306) is opened on one side of the gas holder (302) and connected to one end of the rectangular tube (5). The partition (304) is fixedly connected to the inner wall of the top of the gas holder (302). Multiple first pretreatment fiber beds (303) and second pretreatment fiber beds (305) are respectively fixedly connected to both sides of the partition (304).

4. A coke oven tail gas multi-cylinder centrifugal compressor according to claim 1, characterized in that, The control mechanism (7) also includes a crossbar (702) and an electric push rod (703). The crossbar (702) is fixedly connected to one side of the first rack (704), and the electric push rod (703) is fixedly connected to the top of the rectangular tube (5). The piston rod of the electric push rod (703) is fixedly connected to the bottom of the crossbar (702).

5. A coke oven tail gas multi-cylinder centrifugal compressor according to claim 1, characterized in that, An air vent (712) is provided at one end of the rectangular tube (5).

6. A multi-cylinder centrifugal compressor for coke oven exhaust gas according to claim 1, characterized in that, A sealing gasket is fixedly connected to the bottom of the first baffle (713).

7. The compression process of a multi-cylinder centrifugal compressor for coke oven tail gas according to any one of claims 1-6, characterized in that, Specifically, the following steps are included: S1. The exhaust gas enters the interior of the gas holder (302) through the first intake pipe (301), and is filtered through multiple first pretreatment fiber beds (303) and multiple second pretreatment fiber beds (305) in sequence to purify the tar, dust and naphthalene in the coke oven exhaust gas. It then enters the interior of the rectangular tube (5) through the rectangular hole (306). The two control mechanisms (7) near the purification mechanism (3) are activated. At this time, the corresponding two first baffles (713) are raised, and the second baffle (710) is lowered to block the rectangular tube (5). Inside, the servo motor (201) is started. The output shaft of the servo motor (201) drives the rotating shaft (202) to rotate. The rotating shaft (202) drives the first gear (203) to rotate. The first gear (203) drives the second gear (204) to rotate. The second gear (204) drives the main shaft (205) to rotate, thereby completing the compression process. After the exhaust gas is compressed in series by two of the control mechanisms (7), it returns to the inside of the rectangular tube (5) through the exhaust pipe (6) and is finally discharged through the exhaust hole (712). S2. When a centrifugal compressor body (4) needs to be repaired or malfunctions, the electric push rod (703) corresponding to its centrifugal compressor body (4) is closed, so that the corresponding second air inlet pipe (8) is blocked and cannot continue to intake air. At this time, the function of compressing gas can be realized by starting the last control mechanism (7). This allows for a certain amount of time for repair without stopping the machine and without causing too much loss. At the same time, the three centrifugal compressor bodies (4) work intermittently, which can also effectively prevent the centrifugal compressor body (4) from being damaged due to excessive temperature. S3. The specific operation of the start control mechanism (7) is as follows: start the electric push rod (703), the piston rod of the electric push rod (703) drives the horizontal bar (702) to move vertically upward, the horizontal bar (702) drives the first rack (704) to move vertically upward, the first rack (704) drives the third gear (707) to rotate, the third gear (707) drives the second rack (706) to move vertically downward, the first rack (704) drives the second round rod (714) to move vertically upward, the second round rod (714) drives the first baffle (713) to move vertically upward, the second rack (706) drives the first round rod (708) to move vertically downward, the first round rod (708) drives the second baffle (710) to move vertically downward to block the air outlet (712), and at the same time the tension spring (709) is stretched, which facilitates the rebound of the device.

Images