Centrifugal air compressor inlet passage flow safety protector

Abstract

The utility model discloses a kind of centrifugal air compressor air inlet passage flow safety protector, it is related to centrifugal air compressor air inlet passage protection field, including air inlet passage safety screen, the two sides of air inlet passage safety screen are provided with observation dustproof mechanism, the observation dustproof mechanism includes observation tube, the two sides of air inlet passage safety screen are set in observation tube, the outside fixed connection of observation tube has isolating tube, rotating ring is rotatably connected between the opposite surface of observation tube and isolating tube, the outer surface of rotating ring is fixedly connected with sealing ring, the sealing ring is provided with two, in the utility model, by observation dustproof mechanism, prevent gas leakage or impurity from entering, avoid system operation when due to air intake pipeline negative pressure suction foreign matter in outside, guarantee air intake system safety, facilitate endoscope to enter, realize internal component state can be explored without disassembly, and utilize air inlet passage safety screen, avoid impact air guide valve and impeller, break through cooler coil from falling object.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal air compressor intake duct protection, and in particular to a centrifugal air compressor intake duct overflow safety protector. Background Technology

[0002] Centrifugal air compressors have high speed, high flow rate, and large flow volume. To ensure stable and safe operation of the centrifugal air compressor, it is necessary to implement overflow safety protection for the gas entering the air compressor.

[0003] In existing technologies, the air intake of a centrifugal air compressor is usually directly and fixedly connected to the dust filter. As a result, during daily use, frequent high-frequency low-amplitude vibrations can cause internal components of the dust collector to loosen and fall off. At the same time, high-pressure aeration may also cause the filter membrane of the dust filter cartridge to break and fall off. These fallen objects will enter the air duct and impact the air guide valve and impeller. Even the broken particles may enter the cooler and puncture the cooler coil.

[0004] Therefore, there is an urgent need for a centrifugal air compressor inlet overflow safety protector that is simple in structure, safe and reliable, and easy to clean. Utility Model Content

[0005] The purpose of this utility model is to provide a safety protector for overflow in the intake duct of a centrifugal air compressor, in order to solve the problem in the prior art where, when the intake duct of a centrifugal air compressor is directly fixed to the dust collector filter, high-frequency low-amplitude vibration causes the internal components of the dust collector to loosen and fall off, high-pressure aeration causes the filter cartridge and filter membrane to break and fall off, and the falling debris impacts the air guide valve and impeller, and punctures the cooler coil.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a centrifugal air compressor inlet overflow safety protector, including an inlet safety filter, and observation and dust prevention mechanisms are provided on both sides of the inlet safety filter;

[0007] The observation and dust prevention mechanism includes an observation tube, which is located on both sides of the safety filter in the air intake duct. An isolation tube is fixedly connected to the outside of the observation tube. A rotating ring is rotatably connected between the opposing surfaces of the observation tube and the isolation tube. A sealing ring is fixedly connected to the outer surface of the rotating ring. Two sealing rings are provided, symmetrically arranged, and respectively fitted to the inner sides of the observation tube and the isolation tube. A cover is rotatably connected to the inner ring of the isolation tube. A sealing rubber disc is fixedly connected to the side of the cover away from the observation tube. A pull rope is movably connected inside the isolation tube. One end of the pull rope is fixedly connected to the side of the sealing rubber disc away from the cover. A stop block is fixedly connected to the inner ring of the isolation tube. The stop block is fitted to the side of the sealing rubber disc away from the cover. A stop strip is fixedly connected to the inner ring of the rotating ring. The stop strip is fitted to the side of the cover away from the sealing rubber disc. A handle is fixedly connected to the outer ring of the rotating ring. A rubber ring is fixedly connected to the inner ring of the isolation tube.

[0008] Preferably, the intake safety filter is detachably connected to reducing flanges on both sides, one of the reducing flanges being detachably connected to a centrifugal air compressor intake pipe at the end face away from the intake safety filter, and the other reducing flange being detachably connected to a self-cleaning dust collector pipe at the end face away from the intake safety filter.

[0009] Preferably, the observation tube is fixedly connected to the outer ring of the reducing flange and is in communication with it.

[0010] Preferably, the outer ring of the reducing flange is rotatably connected to an elliptical sealing cover.

[0011] Preferably, the outer ring of the air intake safety filter is fixedly connected with a hanging lug.

[0012] Preferably, the air intake safety filter has wedge-shaped filter holes inside.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. In this utility model, the dustproof mechanism is observed to prevent gas leakage or impurities from entering, avoid the intake of foreign objects due to negative pressure in the intake pipe during system operation, ensure the safety of the intake system, facilitate the entry of the endoscope, and enable the inspection of the internal components without disassembly.

[0015] 2. Furthermore, the intake duct safety filter is used to prevent falling objects from impacting the air valve and impeller, or puncturing the cooler coil. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of the centrifugal air compressor inlet overflow safety protector of this utility model.

[0017] Figure 2This is a schematic cross-sectional view of the left side of the centrifugal air compressor inlet overflow safety protector of this utility model.

[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0019] Figure 4 This is a schematic diagram of the unfolded structure on the right side of the dustproof observation mechanism of this utility model.

[0020] Figure 5 This is a schematic diagram of the appearance and structure of the dustproof observation mechanism of this utility model.

[0021] Figure 6 This is a front cross-sectional view of the safety filter screen in the air intake of this utility model.

[0022] In the diagram: 1. Inlet safety filter; 2. Hanging lug; 3. Reducing flange; 4. Centrifugal air compressor inlet pipe; 5. Self-cleaning dust collector pipe; 6. Oval sealing cover; 7. Observation dust prevention mechanism; 8. Wedge-shaped filter hole; 71. Observation tube; 72. Isolation tube; 73. Rotating ring; 74. Sealing ring; 75. Cover; 76. Sealing disc; 77. Stop block; 78. Pull rope; 79. Stop bar; 710. Handle; 711. Rubber ring. Detailed Implementation

[0023] This utility model provides, for example Figures 1-6 The centrifugal air compressor inlet overflow safety protector shown is designed to solve the problems in the prior art where, when the centrifugal air compressor inlet is directly fixed to the dust collector filter, high-frequency low-amplitude vibration causes internal components of the dust collector to loosen and fall off, and high-pressure aeration causes the filter cartridge and filter membrane to break and fall off, which in turn causes the fallen material to impact the air guide valve and impeller and puncture the cooler coil. At the same time, it can achieve the purpose of inspecting the condition of internal components and convenient cleaning without disassembling the machine.

[0024] It includes an intake safety filter 1, a hanging lug 2, a reducing flange 3, a centrifugal air compressor intake pipe 4, a self-cleaning dust collector pipe 5, an oval sealed cover 6, and an observation and dust prevention mechanism 7.

[0025] The intake safety filter 1, as the core filter component for overcurrent safety protection, has wedge-shaped filter holes 8 inside. The wedge structure design can ensure smooth gas flow to meet the high flow rate and high velocity requirements of the centrifugal air compressor, while efficiently intercepting detached parts such as loose internal parts of the dust collector and broken filter membrane fragments entering from the self-cleaning dust collector pipe 5. This prevents detached objects from entering the subsequent air duct and impacting the air guide valve, impeller, or puncturing the cooler coil. The outer ring of the intake safety filter 1 is fixedly connected with a hanging ear 2. The hanging ear 2 allows workers to easily move, install, or disassemble the entire protector with the help of lifting tools, reducing the intensity of manual operation and improving the ease of equipment disassembly and assembly.

[0026] The reducing flange 3 is detachably connected to both sides of the safety filter 1 in the air intake duct using bolts. Its function is to adapt to centrifugal air compressor intake pipes 4 and self-cleaning dust collector pipes 5 of different diameters, enabling flexible connection between the protector and existing air compressor intake and dust removal systems without requiring large-scale modifications to the original pipelines, significantly improving the device's versatility and adaptability. One end of the reducing flange 3, away from the safety filter 1 in the air intake duct, is detachably connected to the centrifugal air compressor intake pipe 4 via bolts, used to stably deliver clean gas filtered by the filter to the air compressor, ensuring the quality of the air entering the compressor. The other reducing flange 3... The end face away from the safety filter 1 in the intake duct is also detachably connected to the self-cleaning dust collector pipe 5 via bolts, so that the gas to be filtered first enters the protector from the dust collector pipe to complete the filtration, and then enters the air compressor, forming a complete intake filtration passage; in addition, the outer ring of the reducing flange 3 is rotatably connected to the oval sealing cover 6 via a hinge. When it is necessary to thoroughly clean or replace the safety filter 1 in the intake duct, the oval sealing cover 6 can be opened directly. After the operation is completed, the cover is closed. Its oval structure fits tightly with the outer ring of the reducing flange 3, which can effectively prevent gas leakage or the entry of external impurities, and ensure the sealing and safety of the intake system.

[0027] The observation dustproof mechanism 7, a key component allowing for internal inspection without disassembly, includes an observation tube 71, an isolation tube 72, a rotating ring 73, a sealing ring 74, a cover 75, a sealing disc 76, a stop block 77, a pull rope 78, a stop strip 79, a handle 710, and a rubber ring 711. The observation tube 71 is fixedly connected to the outer ring of the reducing flange 3 and communicates with the internal air passage of the reducing flange 3. Simultaneously, the observation tube 71 is fixedly connected between the isolation tube 72 and the reducing flange 3. During endoscopy, the endoscope must first be inserted into the isolation tube 72 and then into the observation tube 71. This structure provides a stable insertion channel for the endoscope and, through the double protection of the isolation tube 72 and the observation tube 71, reduces the risk of external impurities entering the air passage with the endoscope. The external surface of the observation tube 71... An isolation tube 72 is welded and fixed in place. Besides providing protection in conjunction with the observation tube 71, the isolation tube 72 also provides a mounting base for components such as the rotating ring 73 and the cover 75, enhancing the overall structural strength of the observation mechanism. A rotating ring 73 is rotatably connected between the opposing surfaces of the observation tube 71 and the isolation tube 72 via a bearing. The rotating ring 73 can rotate flexibly around the axis of the observation tube 71, providing a power basis for subsequent adjustment of the position of the control bar 79. Two sealing rings 74 are bonded and fixed to the outer surface of the rotating ring 73. These sealing rings 74 are symmetrically distributed and tightly fitted to the outer side of the observation tube 71 and the inner side of the isolation tube 72, respectively. This effectively prevents gas leakage from the gaps between the rotating ring 73 and the observation tube 71 and isolation tube 72, while also preventing external dust from entering the observation mechanism, ensuring... The isolation mechanism is sealed. A cover 75 is rotatably connected to the inner ring of the isolation tube 72 via a rotating shaft. The cover 75 completely covers the end of the observation tube 71, achieving a sealed protection for the observation channel. A sealing disc 76 is glued and fixed to the side of the cover 75 away from the observation tube 71. The sealing disc 76 is made of elastic rubber, which further enhances the sealing performance between the cover 75 and the inner ring of the isolation tube 72, reducing the risk of gas leakage. A pull rope 78 is movably threaded inside the isolation tube 72. One end of the pull rope 78 is knotted and fixed to the side of the sealing disc 76 away from the cover 75. The pull rope 78 facilitates subsequent pulling of the cover 75 to reset and allows for subsequent rotation of the stop strip 79 to re-fit the cover 75. A stop block 77 is welded to the inner ring of the isolation tube 72. The stop block 77 and the sealing disc... The side of the cover 75 away from the endoscope 76 is fitted together, which can limit the rotation angle of the cover 75 and ensure the accurate sealing position when the cover 75 is closed, avoiding seal misalignment; the inner ring of the rotating ring 73 is fixed with a baffle 79 by welding. When the endoscope is not in use, the baffle 79 is fitted with the side of the cover 75 away from the sealing plate 76, which can effectively prevent the cover 75 from rotating and ensure the observation channel is sealed; when the endoscope is in use, rotating the rotating ring 73 can rotate the baffle 79 to the pivot of the cover 75, so as not to affect the rotation of the cover 75 into the observation tube 71; the outer ring of the rotating ring 73 is fixed with a handle 710 by welding. The operator can easily rotate the rotating ring 73 by 180 degrees by pulling the handle 710, simplifying the adjustment operation of the baffle 79 position and reducing the difficulty of operation;A rubber ring 711 is bonded and fixed to the inner ring of the isolation tube 72 to prevent gas leakage or impurities from entering, and to avoid the intake of foreign objects due to negative pressure in the intake pipe during system operation, thus ensuring the safety of the intake system.

[0028] During use, the staff first use the lugs 2 on the outer ring of the air intake safety filter 1 to lift the protector to the installation position of the centrifugal air compressor intake system with the help of hoisting tools. The lugs 2 effectively reduce the manpower consumption when moving the protector and improve the convenience and safety of installation.

[0029] Align one side of the reducing flange 3 with the self-cleaning dust collector pipe 5 and fix it detachably with bolts. During the installation process, ensure that the connection is sealed and leak-free. The reducing flange 3 can flexibly adapt to the difference in pipe diameter between the dust collector pipe and the filter screen without modifying the original pipe, which greatly shortens the installation cycle.

[0030] Align the other side reducing flange 3 with the centrifugal air compressor inlet pipe 4, and fix it in place with bolts to complete the assembly of the protector and the entire air intake system, forming a complete air intake passage of "self-cleaning dust collector pipe 5 - protector - centrifugal air compressor inlet pipe 4", ensuring orderly filtration and transportation of gas;

[0031] After installation, check whether the oval sealing cover 6 is closed tightly, and observe whether the cover 75 of the dustproof mechanism 7 is closed, the sealing disc 76 is in contact with the block 77, and the baffle 79 is against the cover 75. Ensure that the entire protector is installed in place and sealed well to prevent gas leakage or impurities from entering, thus laying the foundation for the safe operation of the air compressor.

[0032] During routine operation and internal inspection, after the centrifugal air compressor is started, the gas to be filtered enters the protector from the self-cleaning dust collector pipe 5 and is filtered through the wedge-shaped filter holes 8 inside the safety filter screen 1 of the air inlet. The wedge-shaped filter holes 8 effectively intercept any parts that may fall off the dust collector, such as loose parts or damaged filter membranes, while ensuring that the gas passes smoothly to meet the high flow rate and high velocity requirements of the air compressor. The filtered clean gas enters the air compressor through the centrifugal air compressor inlet pipe 4, achieving overflow safety protection and effectively preventing falling objects from impacting the air valve, impeller, or puncturing the cooler coil, thus ensuring the stable and safe operation of the air compressor.

[0033] When it is necessary to check the filtration status of the intake safety filter 1, such as whether it is clogged, whether there is a large amount of impurities, the working status of the guide vane valve, or the surface condition of the first-stage impeller, the operator does not need to disassemble the air compressor or the protector. They only need to operate the observation dustproof mechanism 7. The specific steps are as follows: Hold the handle 710 of the outer ring of the rotating ring 73 and manually turn the handle 710 to drive the rotating ring 73 to rotate 180 degrees. The rotating ring 73 drives the inner ring baffle 79 to rotate synchronously, so that the baffle 79 is precisely rotated to the pivot of the cover 75, so as to avoid obstruction when the cover 75 rotates later and ensure that the endoscope can be inserted smoothly.

[0034] The endoscope is first inserted into the isolation tube 72, and then slowly inserted into the observation tube 71. The tip of the endoscope pushes the cover 75 to rotate around the inside of the observation tube 71. After passing through the observation tube 71, the endoscope enters the internal air passage of the reducing flange 3. Through the endoscope, the operator can directly observe the blockage of the wedge-shaped filter holes 8 of the intake safety filter 1, whether there are impurities attached to the guide vane valve, and whether there is damage or foreign matter on the surface of the first-stage impeller. This provides a direct visual basis for determining whether the guide vane valve, the first-stage impeller, or the filter needs to be cleaned or replaced, completely avoiding the trouble of disassembling the machine to check the impeller in the traditional way, and greatly reducing maintenance costs and downtime. The inspection is complete. Next, first pull the endoscope back from the observation tube 71 to the isolation tube 72, then slowly pull out the isolation tube 72. At the same time, gently pull the cover 75 back to the closing direction using the pull rope 78. After the cover 75 initially fits against the end of the observation tube 71, pull the handle 710 in the opposite direction to make the rotating ring 73 drive the baffle 79 back to the initial position until the baffle 79 and the side of the cover 75 away from the sealing plate 76 are in contact, the sealing plate 76 and the baffle 77 are in contact, and the rubber ring 711 and the edge of the cover 75 are in close contact. This completes the sealing of the observation channel, preventing the intake pipe from sucking in foreign objects under negative pressure during system operation and ensuring the safety of the intake system.

[0035] When an endoscope examination reveals that the intake safety filter 1 is severely clogged or has a large amount of impurities on its surface and needs to be cleaned, the staff should first shut down the centrifugal air compressor and the self-cleaning dust collector, and cut off the intake system to prevent gas leakage or impurities from entering the air compressor during the cleaning process, thus ensuring the safety of maintenance operations.

[0036] If only simple cleaning of impurities on the filter screen surface is required, the elliptical sealing cover 6 on the outer ring of the reducing flange 3 can be opened directly, and the impurities on the surface of the intake safety filter 1 can be cleaned using a high-pressure air gun or cleaning tool. The cleaning process does not require disassembling the entire protector, making the operation convenient and efficient. If it is necessary to thoroughly clean the wedge-shaped filter holes 8 inside the filter screen or replace the filter screen, the bolts connecting the reducing flange 3 to the centrifugal air compressor intake pipe 4 and the self-cleaning dust collector pipe 5 can be loosened, and the protector can be smoothly removed as a whole using the hanging lugs 2 and transported to the designated maintenance area.

Claims

1. A centrifugal air compressor inlet overflow safety protector, comprising an inlet safety filter (1), characterized in that: The intake safety filter (1) is provided with observation and dust prevention mechanisms (7) on both sides; The observation and dust prevention mechanism (7) includes an observation tube (71), which is located on both sides of the safety filter (1) in the air intake. An isolation tube (72) is fixedly connected to the outside of the observation tube (71). A rotating ring (73) is rotatably connected between the opposing surfaces of the observation tube (71) and the isolation tube (72). A sealing ring (74) is fixedly connected to the outer surface of the rotating ring (73). There are two sealing rings (74), which are symmetrically arranged and respectively fit against the inner sides of the observation tube (71) and the isolation tube (72). A cover (75) is rotatably connected to the inner ring of the isolation tube (72). The cover (75) is located away from the observation tube (71). A sealing disc (76) is fixedly connected to one side of the isolation tube (72), and a pull rope (78) is movably connected inside the isolation tube (72). One end of the pull rope (78) is fixedly connected to the side of the sealing disc (76) away from the cover (75). A stop block (77) is fixedly connected to the inner ring of the isolation tube (72), and the stop block (77) is in contact with the side of the sealing disc (76) away from the cover (75). A stop strip (79) is fixedly connected to the inner ring of the rotating ring (73), and the stop strip (79) is in contact with the side of the cover (75) away from the sealing disc (76). A handle (710) is fixedly connected to the outer ring of the rotating ring (73), and a rubber ring (711) is fixedly connected to the inner ring of the isolation tube (72).

2. The centrifugal air compressor inlet overflow safety protector according to claim 1, characterized in that: The intake safety filter (1) is detachably connected to two sides by reducing flanges (3). One of the reducing flanges (3) is detachably connected to a centrifugal air compressor intake pipe (4) at the end face away from the intake safety filter (1), and the other reducing flange (3) is detachably connected to a self-cleaning dust collector pipe (5) at the end face away from the intake safety filter (1).

3. The centrifugal air compressor inlet overflow safety protector according to claim 2, characterized in that: The observation tube (71) is fixedly connected to the outer ring of the reducing flange (3) and is in communication with it.

4. A centrifugal air compressor inlet overcurrent safety protector according to claim 2, characterized in that: The outer ring of the reducing flange (3) is rotatably connected to an elliptical sealing cover (6).

5. A centrifugal air compressor inlet overcurrent safety protector according to claim 1, characterized in that: The outer ring of the intake safety filter (1) is fixedly connected with a lug (2).

6. A centrifugal air compressor inlet overcurrent safety protector according to claim 1, characterized in that: The air intake safety filter (1) has wedge-shaped filter holes (8) inside.

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