Air inlet anti-surge pipe of MVR centrifugal steam compressor

Abstract

The invention relates to the technical field of vapor compressors, in particular to an air inlet anti-surge pipe of an MVR centrifugal vapor compressor. According to the technical scheme, the MVR centrifugal vapor compressor comprises an MVR centrifugal vapor compressor body, a shell, an air inlet pipe, a surge bin and a supporting ring, the air inlet pipe is arranged at one end of the MVR centrifugal vapor compressor body, the shell is connected to the outer side of the air inlet pipe in a sleeving mode, the surge bin is arranged at the center section of the air inlet pipe, and a rotating shaft is rotationally installed in the surge bin; blades distributed in an annular array mode are arranged on the outer wall of the rotating shaft, supporting rings are arranged on the front side and the rear side of the buffering bin correspondingly, second springs distributed in an annular array mode are arranged in the supporting rings, positioning blocks are arranged at one ends of the second springs, and balls are arranged at one ends of the positioning blocks. By arranging the surge bin, the problems that the air inlet pipe of the MVR centrifugal vapor compressor body does not have the anti-surge function, air flow is unstable, impact and vibration are generated, and the equipment operation efficiency is affected are solved.

Description

Technical Field

[0001] The invention relates to the technical field of steam compressors, and in particular to an air intake anti-surge pipe of an MVR centrifugal steam compressor. Background Art

[0002] MVR refers to Mechanical Vapor Recompression technology, which achieves energy recovery and energy saving by compressing and reheating the already generated steam to increase its temperature and pressure. A centrifugal steam compressor is a device that uses centrifugal force to compress gas to a higher pressure. It pushes the gas to the periphery through a rotating centrifuge and produces a compression effect on the outer wall of the rotor, thereby increasing the pressure of the gas. However, when in use, the intake pipe of the MVR centrifugal steam compressor does not have an anti-surge function, the gas flow is unstable, and shock and vibration are generated, affecting the operating efficiency of the equipment. Therefore, those skilled in the art provide an MVR centrifugal steam compressor intake anti-surge pipe to solve the problems raised in the above background technology. Summary of the invention

[0003] The purpose of the present invention is to solve the problems existing in the background technology and to provide an air intake anti-surge pipe for an MVR centrifugal steam compressor.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an MVR centrifugal steam compressor air intake anti-surge pipe, comprising an MVR centrifugal steam compressor body, a shell, an air intake pipe, a buffer bin and a support ring, wherein an air intake pipe is arranged at one end of the MVR centrifugal steam compressor body, the outer side of the air intake pipe is sleeved with the shell, a buffer bin is arranged at the central section of the air intake pipe, a rotating shaft is rotatably installed inside the buffer bin, blades distributed in a circular array are arranged on the outer wall of the rotating shaft, support rings are arranged on both the front and rear sides of the buffer bin, two springs distributed in a circular array are arranged inside the support ring, a positioning block is arranged at one end of the spring two, and a ball is arranged at one end of the positioning block.

[0005] Preferably, the shaft is located at one end outside the buffer bin and is provided with a guide wheel with an annular rolling groove on the outer wall, and the ball is rollingly mounted on the outer wall of the guide wheel. The guide wheel guides the ball to rotate, reduces the wear of the ball contact surface, and improves the stability of the ball during rotation.

[0006] Preferably, a support rod is provided at one end of the positioning block, the support rod is located inside the second spring, and the outer wall of the support ring is provided with support columns that are symmetrically distributed and connected to the inner wall of the shell. The support rod limits the second spring during the telescopic process to prevent the second spring from deviating outward.

[0007] Preferably, a sliding sleeve is embedded in the support ring, and one end of the support rod is slidably inserted into the sliding sleeve. The support rod is slidably guided in the support ring through the sliding sleeve, so that the support rod can move effectively when subjected to force.

[0008] Preferably, the air intake pipe and the outside of the buffer bin are sleeved with a mesh sleeve, and the outside of the mesh sleeve is sleeved with a heat preservation sleeve. The mesh sleeve is sleeved on the outside of the air intake pipe, and the outside of the mesh sleeve is sleeved with the outer shell. The mesh sleeve with a porous structure is designed to allow air to flow through multiple small holes, slowing down the gas flow speed, thereby reducing the noise generation. The special spiral or curved mesh design can change the direction and speed of gas flow and reduce the probability of noise generation.

[0009] Preferably, flanges are provided at both ends of the air inlet pipe, and the flanges are located at the openings at both ends of the shell. The flanges are used for butt joint between pipelines and between the air inlet pipe and the opening of the MVR centrifugal steam compressor body.

[0010] Preferably, a positioning ring is sleeved on the outside of the air inlet pipe, and the inner walls of the openings at both ends of the shell are provided with mounting tubes distributed in a ring array, and one end of the mounting tube is provided with a rubber head that fits the outer wall of the positioning ring. The positioning ring supports the rubber head, and the rubber head has a damping effect, thereby buffering the impact force.

[0011] Preferably, a piston is slidably mounted on the inner wall of the installation cylinder, and a plug rod is provided at one end of the piston. The plug rod drives the piston to slide inside the installation cylinder, and the piston is connected through the plug rod.

[0012] Preferably, a sealing ring is provided on the inner wall of one side of the installation tube, one end of the plug rod is slidably inserted into the sealing ring, and one end of the plug rod is connected to the inner wall of the openings at both ends of the shell. The plug rod is slidably supported in the installation tube by the sealing ring, thereby guiding the plug rod to slide.

[0013] Preferably, the outer wall of the installation tube is sleeved with a limit ring, and one end of the limit ring is provided with a spring 1 sleeved on the outer side of the installation tube and connected to the inner wall of the openings at both ends of the shell. The spring force of the spring 1 acts on the installation tube through the limit ring, and then the elastic force of the spring 1 acts on the rubber head and the air intake pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention arranges a buffer bin inside the air intake pipe, and blades are rotatably installed inside the buffer bin, which are supported by the rotating shaft and distributed in a ring array on the outer wall of the rotating shaft. When the outer side of the rotating shaft rotates, resistance is applied by the elastic member, and the input gas drives the blades to rotate. The resistance applied by the blades reduces the impact of the gas entering the rotor and the inner wall of the casing of the MVR centrifugal steam compressor pump body, and the blades are driven to rotate by the vortex and gas flow, thereby achieving shock reduction and impact absorption of the gas.

[0016] At the same time, the outer elastic part applies resistance to control the operation of the shaft and reduce the impact force of the gas. It is designed to effectively reduce the impact transmission when the gas enters the pump body of the MVR centrifugal steam compressor. The blade organization in the buffer bin can reduce the speed difference of the gas flow, stabilize the airflow dynamics, and disperse or absorb part of the impact and pressure to prevent the system from surging problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the housing of the present invention when viewed from above;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the housing of the present invention in top cross-section;

[0020] Figure 4 It is a schematic diagram of the main cross-sectional three-dimensional structure of the air intake pipe of the present invention;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the air intake pipe in a side cross-section of the present invention;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the installation cylinder of the present invention in a side cross-section;

[0023] Figure 7 It is a schematic diagram of the main cross-sectional three-dimensional structure of the buffer bin of the present invention.

[0024] Figure numerals: 1. MVR centrifugal steam compressor body; 2. outer shell; 3. flange; 4. insulation sleeve; 5. mesh sleeve; 6. air inlet pipe; 7. buffer bin; 8. support ring; 9. spring one; 10. support column; 11. plug rod; 12. mounting cylinder; 13. sealing ring; 14. limit ring; 15. piston; 16. rubber head; 17. positioning ring; 18. rotating shaft; 19. blade; 20. positioning block; 21. ball; 22. guide wheel; 23. spring two; 24. support rod; 25. sliding sleeve. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figures 1 to 7 , the present invention provides three embodiments:

[0027] The invention comprises an MVR centrifugal steam compressor body 1, a shell 2, an air inlet pipe 6, a buffer bin 7 and a support ring 8. An air inlet pipe 6 is arranged at one end of the MVR centrifugal steam compressor body 1, the outer side of the air inlet pipe 6 is sleeved with the shell 2, a buffer bin 7 is arranged at the central section of the air inlet pipe 6, a rotating shaft 18 is rotatably installed inside the buffer bin 7, blades 19 distributed in a circular array are arranged on the outer wall of the rotating shaft 18, support rings 8 are arranged on both the front and rear sides of the buffer bin 7, springs 23 distributed in a circular array are arranged inside the support ring 8, a positioning block 20 is arranged at one end of the spring 23, and a ball 21 is arranged at one end of the positioning block 20.

[0028] A guide wheel 22 having an annular rolling groove is disposed on the outer wall of the rotating shaft 18 at one end of the outer side of the buffer bin 7 , and the ball bearing 21 is rollingly mounted on the outer wall of the guide wheel 22 .

[0029] A buffer bin 7 is provided inside the air intake pipe 6, and an annular array of blades 19 supported by a rotating shaft 18 is installed inside the buffer bin 7. The blades 19 are driven to rotate by vortex and gas flow to achieve shock absorption and impact absorption of the gas. At the same time, the outer elastic member applies resistance to control the operation of the rotating shaft 18 and reduce the impact force of the gas. It is designed to effectively reduce the impact transmission when the gas enters the pump body of the MVR centrifugal steam compressor. This improvement measure can help prevent the surge phenomenon that may occur in the air intake pipe 6 or the system. When the gas flow changes and the pressure fluctuates violently, the blade 19 organization in the buffer bin 7 can reduce the speed difference of the gas flow, stabilize the gas flow dynamics, and disperse or absorb part of the impact and pressure, which helps to prevent the surge problem of the system to a certain extent. The advantage is to reduce the impact force of the gas, stabilize the gas flow, and reduce the stress of the equipment; but it is necessary to ensure that the material and structure of the blade 19 are suitable, and it can operate stably and sustainably and withstand the impact of the gas flow. Although this improvement has a certain vibration reduction effect on the air intake pipe 6 / centrifugal steam compressor and can help smooth the gas flow, its main purpose is to reduce the impact and fluctuation of the gas flow, rather than the typical prevention of surge vibration. Therefore, this design can play a certain role in vibration reduction and help reduce the impact of gas entering the MVR centrifugal steam compressor, but it needs to be further evaluated in combination with system characteristics to improve the anti-surge design;

[0030] The air inlet pipe 6 delivers the gas to the inside of the MVR centrifugal steam compressor body 1. The MVR steam compressor inhales the gas or steam through the high-speed rotating impeller under the action of centrifugal force, and discharges it after acceleration. Inside the impeller, the gas is compressed and pressurized. At the same time, the design of the blades 19 realizes the cooling and pressure increase of the gas, and finally outputs high-temperature and high-pressure compressed gas. As a part of the MVR centrifugal steam compressor system, the air inlet pipe 6 has the main function of introducing gas or steam and delivering it to the compressor body for compression. The gas or steam enters the air inlet pipe 6 from the air inlet, flows through the buffer bin 7 and the improved structure set on the upper part of the pipeline, and reduces the impact, vibration and noise that may be generated during the flow of gas. The design inside the air inlet pipe 6 should be conducive to reducing resistance, weakening vortex, and stabilizing gas flow, ensuring that the gas smoothly reaches the impeller part of the steam compressor, so as to be compressed.

[0031] Embodiment 2:

[0032] The invention comprises an MVR centrifugal steam compressor body 1, a shell 2, an air inlet pipe 6, a buffer bin 7 and a support ring 8. An air inlet pipe 6 is arranged at one end of the MVR centrifugal steam compressor body 1, the outer side of the air inlet pipe 6 is sleeved with the shell 2, a buffer bin 7 is arranged at the central section of the air inlet pipe 6, a rotating shaft 18 is rotatably installed inside the buffer bin 7, blades 19 distributed in a circular array are arranged on the outer wall of the rotating shaft 18, support rings 8 are arranged on both the front and rear sides of the buffer bin 7, springs 23 distributed in a circular array are arranged inside the support ring 8, a positioning block 20 is arranged at one end of the spring 23, and a ball 21 is arranged at one end of the positioning block 20.

[0033] A guide wheel 22 having an annular rolling groove is disposed on the outer wall of the rotating shaft 18 at one end of the outer side of the buffer bin 7 , and the ball bearing 21 is rollingly mounted on the outer wall of the guide wheel 22 .

[0034] A buffer bin 7 is provided inside the air intake pipe 6, and an annular array of blades 19 supported by a rotating shaft 18 is installed inside the buffer bin 7. The blades 19 are driven to rotate by vortex and gas flow to achieve shock absorption and impact absorption of the gas. At the same time, the outer elastic member applies resistance to control the operation of the rotating shaft 18 and reduce the impact force of the gas. It is designed to effectively reduce the impact transmission when the gas enters the pump body of the MVR centrifugal steam compressor. This improvement measure can help prevent the surge phenomenon that may occur in the air intake pipe 6 or the system. When the gas flow changes and the pressure fluctuates violently, the blade 19 organization in the buffer bin 7 can reduce the speed difference of the gas flow, stabilize the gas flow dynamics, and disperse or absorb part of the impact and pressure, which helps to prevent the surge problem of the system to a certain extent. The advantage is to reduce the impact force of the gas, stabilize the gas flow, and reduce the stress of the equipment; but it is necessary to ensure that the material and structure of the blade 19 are suitable, and it can operate stably and sustainably and withstand the impact of the gas flow. Although this improvement has a certain vibration reduction effect on the air intake pipe 6 / centrifugal steam compressor and can help smooth the gas flow, its main purpose is to reduce the impact and fluctuation of the gas flow, rather than the typical prevention of surge vibration. Therefore, this design can play a certain role in vibration reduction and help reduce the impact of gas entering the MVR centrifugal steam compressor, but it needs to be further evaluated in combination with system characteristics to improve the anti-surge design;

[0035] The air inlet pipe 6 delivers the gas to the inside of the MVR centrifugal steam compressor body 1. The MVR steam compressor inhales the gas or steam through the high-speed rotating impeller under the action of centrifugal force, and discharges it after acceleration. Inside the impeller, the gas is compressed and pressurized. At the same time, the design of the blades 19 realizes the cooling and pressure increase of the gas, and finally outputs high-temperature and high-pressure compressed gas. As a part of the MVR centrifugal steam compressor system, the air inlet pipe 6 has the main function of introducing gas or steam and delivering it to the compressor body for compression. The gas or steam enters the air inlet pipe 6 from the air inlet, flows through the buffer bin 7 and the improved structure set on the upper part of the pipeline, and reduces the impact, vibration and noise that may be generated during the flow of gas. The design inside the air inlet pipe 6 should be conducive to reducing resistance, weakening vortex, and stabilizing gas flow, ensuring that the gas smoothly reaches the impeller part of the steam compressor, so as to be compressed.

[0036] A support rod 24 is disposed at one end of the positioning block 20 , and the support rod 24 is located inside the second spring 23 . The outer wall of the support ring 8 is provided with support columns 10 that are symmetrically distributed and connected to the inner wall of the housing 2 .

[0037] The support ring 8 is embedded with a mounting sleeve 25 , and one end of the support rod 24 is slidably inserted into the sleeve 25 .

[0038] When the rotating shaft 18 rotates, it drives the guide ring to rotate, and the guide ring and the ball 21 slide together, and the elastic force of the ball 21 acts on the guide ring, exerting resistance to the rotation process of the guide ring, thereby reducing the rotation speed of the rotating shaft 18. At the same time, the spring is slightly slid, and the guide rod slides inside the spring 9 to guide the spring 9 and prevent the spring 9 from deviating outward, thereby making the resistance component stable to use.

[0039] Embodiment three:

[0040] The invention comprises an MVR centrifugal steam compressor body 1, a shell 2, an air inlet pipe 6, a buffer bin 7 and a support ring 8. An air inlet pipe 6 is arranged at one end of the MVR centrifugal steam compressor body 1, the outer side of the air inlet pipe 6 is sleeved with the shell 2, a buffer bin 7 is arranged at the central section of the air inlet pipe 6, a rotating shaft 18 is rotatably installed inside the buffer bin 7, blades 19 distributed in a circular array are arranged on the outer wall of the rotating shaft 18, support rings 8 are arranged on both the front and rear sides of the buffer bin 7, springs 23 distributed in a circular array are arranged inside the support ring 8, a positioning block 20 is arranged at one end of the spring 23, and a ball 21 is arranged at one end of the positioning block 20.

[0041] A guide wheel 22 having an annular rolling groove is disposed on the outer wall of the rotating shaft 18 at one end of the outer side of the buffer bin 7 , and the ball bearing 21 is rollingly mounted on the outer wall of the guide wheel 22 .

[0042] A buffer bin 7 is provided inside the air intake pipe 6, and an annular array of blades 19 supported by a rotating shaft 18 is installed inside the buffer bin 7. The blades 19 are driven to rotate by vortex and gas flow to achieve shock absorption and impact absorption of the gas. At the same time, the outer elastic member applies resistance to control the operation of the rotating shaft 18 and reduce the impact force of the gas. It is designed to effectively reduce the impact transmission when the gas enters the pump body of the MVR centrifugal steam compressor. This improvement measure can help prevent the surge phenomenon that may occur in the air intake pipe 6 or the system. When the gas flow changes and the pressure fluctuates violently, the blade 19 organization in the buffer bin 7 can reduce the speed difference of the gas flow, stabilize the gas flow dynamics, and disperse or absorb part of the impact and pressure, which helps to prevent the surge problem of the system to a certain extent. The advantage is to reduce the impact force of the gas, stabilize the gas flow, and reduce the stress of the equipment; but it is necessary to ensure that the material and structure of the blade 19 are suitable, and it can operate stably and sustainably and withstand the impact of the gas flow. Although this improvement has a certain vibration reduction effect on the air intake pipe 6 / centrifugal steam compressor and can help smooth the gas flow, its main purpose is to reduce the impact and fluctuation of the gas flow, rather than the typical prevention of surge vibration. Therefore, this design can play a certain role in vibration reduction and help reduce the impact of gas entering the MVR centrifugal steam compressor, but it needs to be further evaluated in combination with system characteristics to improve the anti-surge design;

[0043] The air inlet pipe 6 delivers the gas to the inside of the MVR centrifugal steam compressor body 1. The MVR steam compressor inhales the gas or steam through the high-speed rotating impeller under the action of centrifugal force, and discharges it after acceleration. Inside the impeller, the gas is compressed and pressurized. At the same time, the design of the blades 19 realizes the cooling and pressure increase of the gas, and finally outputs high-temperature and high-pressure compressed gas. As a part of the MVR centrifugal steam compressor system, the air inlet pipe 6 has the main function of introducing gas or steam and delivering it to the compressor body for compression. The gas or steam enters the air inlet pipe 6 from the air inlet, flows through the buffer bin 7 and the improved structure set on the upper part of the pipeline, and reduces the impact, vibration and noise that may be generated during the flow of gas. The design inside the air inlet pipe 6 should be conducive to reducing resistance, weakening vortex, and stabilizing gas flow, ensuring that the gas smoothly reaches the impeller part of the steam compressor, so as to be compressed.

[0044] A support rod 24 is disposed at one end of the positioning block 20 , and the support rod 24 is located inside the second spring 23 . The outer wall of the support ring 8 is provided with support columns 10 that are symmetrically distributed and connected to the inner wall of the housing 2 .

[0045] The support ring 8 is embedded with a mounting sleeve 25 , and one end of the support rod 24 is slidably inserted into the sleeve 25 .

[0046] When the rotating shaft 18 rotates, it drives the guide ring to rotate, and the guide ring and the ball 21 slide together, and the elastic force of the ball 21 acts on the guide ring, exerting resistance to the rotation process of the guide ring, thereby reducing the rotation speed of the rotating shaft 18. At the same time, the spring is slightly slid, and the guide rod slides inside the spring 9 to guide the spring 9 and prevent the spring 9 from deviating outward, thereby making the resistance component stable to use.

[0047] A mesh sleeve 5 is sleeved on the outside of the air inlet pipe 6 and the buffer bin 7 , and a heat preservation sleeve 4 is sleeved on the outside of the mesh sleeve 5 .

[0048] Flanges 3 are provided at both ends of the air inlet pipe 6 , and the flanges 3 are located at the openings at both ends of the shell 2 .

[0049] Flange 3 is made of stainless steel, carbon steel, alloy steel, etc. According to the requirements of specific usage scenarios, materials with good high temperature resistance and corrosion resistance are selected. During the processing, flange 3 blanks of specified sizes are cut from the raw materials. The flange 3 blanks are precisely processed with a lathe for inner and outer diameters to ensure the accuracy of its connection with the pipeline. Connecting bolt holes are opened on flange 3 to connect with intake pipe 6 or other components. The surface flatness and smoothness of flange 3 are ensured to ensure sealing. Flange 3 is heat treated to improve its strength and hardness. Paint or galvanize as needed to prevent flange 3 from rusting and corrosion. Sound-absorbing materials, such as sound-absorbing cotton, glass fiber, etc., are filled inside the mesh sleeve 5. Through the absorption and reflection of these materials, It can effectively reduce the noise level during gas flow. The porous structure design, damping layer superposition, special shape design, etc. can also improve the silencing effect of the mesh sleeve 5. The outside of the insulation sleeve 4 is covered around the air intake pipe 6. Usually, thermal insulation materials such as rock wool, aluminum silicate felt, etc. are used to wrap the outer wall of the air intake pipe 6. The design and thickness of the insulation sleeve 4 need to consider the use environment and working conditions of the air intake pipe 6 to ensure the insulation effect and reduce heat loss. The insulation sleeve 4 should be installed reasonably and kept in good condition to keep the internal temperature of the air intake pipe 6 stable and improve energy efficiency and system performance. Through the material selection and manufacturing process of the flange 3, the silencing design of the mesh sleeve 5 and the selection of insulation materials of the insulation sleeve 4, the functionality and performance of the air intake pipe 6 components can be provided with necessary support and guarantee.

[0050] A positioning ring 17 is sleeved on the outside of the air inlet pipe 6, and the inner walls of the openings at both ends of the housing 2 are provided with mounting tubes 12 distributed in a ring array, and one end of the mounting tube 12 is provided with a rubber head 16 that fits the outer wall of the positioning ring 17;

[0051] A piston 15 is slidably mounted on the inner wall of the mounting cylinder 12, and a plug rod 11 is disposed at one end of the piston 15;

[0052] A sealing ring 13 is provided on the inner wall of one side of the installation cylinder 12, one end of the plug rod 11 is slidably inserted into the sealing ring 13, and one end of the plug rod 11 is connected to the inner wall of the openings at both ends of the shell 2;

[0053] The outer wall of the installation tube 12 is sleeved with a limit ring 14, and one end of the limit ring 14 is provided with a spring 9 sleeved on the outside of the installation tube 12 and connected to the inner wall of the openings at both ends of the shell 2;

[0054] When the air intake pipe 6 is impacted, the impact force will act on the spring mounting cylinder 12, the spring 9 will shrink under the force, the hydraulic oil inside the mounting cylinder 12 will squeeze the piston 15, and an oil groove is arranged between the hydraulic oil and the mounting cylinder 12. The narrow flow channel of the oil groove exerts resistance on the hydraulic oil, thereby exerting a damping effect on the spring 9 during the expansion and contraction process, thereby buffering the air intake pipe 6, which can effectively absorb and mitigate the impact force on the air intake pipe 6, prevent the impact from being directly transmitted to the pipeline and connecting components, and reduce the risk of damage to the system. When the buffer device is working, the air intake pipe 6 can remain relatively stable when subjected to external force, avoid the normal operation of the system affected by accidental collision or vibration, reduce the vibration and impact of the air intake pipe 6 and related components, thereby reducing mechanical wear and fatigue, extending the service life of the equipment, protecting the pipeline and other key components from damage by external impact, and ensuring safety and stability during operation.

[0055] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

[0056] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An MVR centrifugal steam compressor air intake anti-surge pipe, comprising an MVR centrifugal steam compressor body (1), a housing (2), an air intake pipe (6), a buffer bin (7) and a support ring (8), characterized in that: An air inlet pipe (6) is arranged at one end of the MVR centrifugal steam compressor body (1), a housing (2) is sleeved on the outer side of the air inlet pipe (6), a buffer bin (7) is arranged at the central section of the air inlet pipe (6), a rotating shaft (18) is rotatably mounted inside the buffer bin (7), blades (19) distributed in an annular array are arranged on the outer wall of the rotating shaft (18), support rings (8) are arranged on both the front and rear sides of the buffer bin (7), springs (23) distributed in an annular array are arranged inside the support ring (8), a positioning block (20) is arranged at one end of the springs (23), and a ball (21) is arranged at one end of the positioning block (20).

2. The MVR centrifugal steam compressor air intake anti-surge pipe according to claim 1, characterized in that: The rotating shaft (18) is provided with a guide wheel (22) at one end outside the buffer bin (7) and has an outer wall with an annular rolling groove, and the ball (21) is rollingly mounted on the outer wall of the guide wheel (22).

3. The MVR centrifugal steam compressor air intake anti-surge pipe according to claim 1, characterized in that: A support rod (24) is provided at one end of the positioning block (20), and the support rod (24) is located inside the second spring (23). The outer wall of the support ring (8) is provided with support columns (10) which are symmetrically distributed and connected to the inner wall of the outer shell (2).

4. The MVR centrifugal steam compressor air intake anti-surge pipe according to claim 3, characterized in that: The support ring (8) is embedded with a mounting sleeve (25), and one end of the support rod (24) is slidably inserted into the interior of the sleeve (25).

5. The MVR centrifugal steam compressor air intake anti-surge pipe according to claim 1, characterized in that: The air inlet pipe (6) and the buffer bin (7) are sleeved with a mesh sleeve (5) on their outer sides, and the mesh sleeve (5) is sleeved with a heat preservation sleeve (4) on its outer sides.

6. The MVR centrifugal steam compressor air intake anti-surge pipe according to claim 1, characterized in that: Flanges (3) are provided at both ends of the air inlet pipe (6), and the flanges (3) are located at the openings at both ends of the outer shell (2).

7. The MVR centrifugal steam compressor air intake anti-surge pipe according to claim 1, characterized in that: The air inlet pipe (6) is sleeved with a positioning ring (17) on the outside, and the inner walls of the openings at both ends of the housing (2) are provided with mounting tubes (12) distributed in a ring array, and one end of the mounting tube (12) is provided with a rubber head (16) that fits the outer wall of the positioning ring (17).

8. The MVR centrifugal steam compressor air intake anti-surge pipe according to claim 7, characterized in that: A piston (15) is slidably mounted on the inner wall of the mounting cylinder (12), and a plug rod (11) is disposed at one end of the piston (15).

9. The MVR centrifugal steam compressor air intake anti-surge pipe according to claim 8, characterized in that: A sealing ring (13) is provided on the inner wall of one side of the installation cylinder (12), one end of the plug rod (11) is slidably inserted into the sealing ring (13), and one end of the plug rod (11) is connected to the inner walls of the openings at both ends of the outer shell (2).

10. The MVR centrifugal steam compressor air intake anti-surge pipe according to claim 9, characterized in that: The outer wall of the installation tube (12) is sleeved with a limit ring (14), and one end of the limit ring (14) is provided with a spring (9) sleeved on the outside of the installation tube (12) and connected to the inner walls of the openings at both ends of the outer shell (2).

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