High efficiency centrifugal vapor compressor

Abstract

The utility model relates to centrifugal steam compressor technical field discloses a kind of efficient centrifugal steam compressors, including steam compressor body, the steam compressor body is connected with bellows compensator by flange, the flange is connected hole and is penetrated, two the connecting hole of the flange conduction is connected with the connection rubber bush that is arranged, one the connection rubber bush is arranged with screw sleeve, another the connection rubber bush is arranged with the screw rod that is threadedly connected with the screw sleeve;Wherein the screw rod and the screw sleeve end portion are all provided with the limiting plate of diameter greater than the connecting hole;The utility model can reduce the probability that bolt occurs rust, jams in flange connecting hole, improve bellows compensator connection disassembly convenience, reduce equipment maintenance time and cost, guarantee work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal steam compressor technology, and in particular to a high-efficiency centrifugal steam compressor. Background Technology

[0002] In modern industrial production, steam compressors, as key equipment, are widely used in various fields such as chemical, pharmaceutical, and food processing. They undertake important tasks such as steam compression and recycling, and are of great significance for improving energy efficiency and reducing production costs. Among them, the bellows compensator, as an important component of the steam compressor system, can effectively absorb the displacement caused by thermal expansion and contraction, mechanical vibration and other factors during equipment operation, ensuring the stable operation of the steam compressor and the safety of the system pipeline.

[0003] Currently, in steam compressors on the market, bellows compensators are typically fixed using flanges and bolts. During equipment installation and maintenance, the nuts must be removed from the bolts, and then the bolts pulled out, to disassemble and replace the bellows compensator. However, in actual use, due to complex operating environments such as high temperature, high humidity, and corrosive gases, the bolts, after being inserted into the flange connection holes, are prone to corrosion and jamming after long-term exposure to external factors. When maintenance of the bellows compensator is required, the problem of not being able to remove the bolts properly often arises, making disassembly difficult. This not only increases equipment maintenance time and costs but may also affect the normal operation of the entire steam compressor system due to untimely maintenance, reducing production efficiency and even causing safety hazards.

[0004] Based on this, the utility model patent with authorization announcement number CN214118581U discloses a high-efficiency centrifugal steam compressor, belonging to the technical field of centrifugal steam compressors. This high-efficiency centrifugal steam compressor includes a centrifugal steam compressor assembly and a bellows compensation assembly. By loosening the bolts and nuts connected to the U-shaped groove, the bolts and nuts are released from their pressure on the U-shaped groove. The bolts and nuts are then pulled out through the U-shaped groove. Next, the bolts and nuts pressing against the first and second baffles are loosened. The nuts and bolts cause the limiting sleeve on the second baffle to move away from the mounting hole. Since the second baffle has two corresponding settings, it can be directly removed. The first clamping sleeve and bolt are then pulled away from the first and second flanges through the mounting hole. During disassembly, it is not necessary to remove the nut from the bolt; only the nut needs to be loosened. This effectively improves the problem of inconvenient disassembly of the bellows compensator on existing centrifugal steam compressors when the nut cannot be completely removed from the bolt.

[0005] Although the above solution includes a U-shaped groove on the flange, it also includes mounting holes. When disconnecting the two flanges, the nuts and bolts in the mounting holes on the flange must be removed first, and then the bolts and nuts in the U-shaped groove can be removed. However, the problem of removing the bolts in the mounting holes still exists.

[0006] Therefore, there is an urgent need for a high-efficiency centrifugal steam compressor that can reduce the probability of bolts corroding and jamming in flange connection holes and improve the convenience of bellows compensator connection and disassembly. Utility Model Content

[0007] The purpose of this invention is to provide a high-efficiency centrifugal steam compressor that can reduce the probability of bolts corroding and jamming in flange connection holes, improve the convenience of bellows compensator connection and disassembly, reduce equipment maintenance time and cost, and ensure work efficiency.

[0008] The present invention adopts the following technical solution:

[0009] A high-efficiency centrifugal steam compressor includes a steam compressor body. The steam compressor body is connected to a bellows compensator via a flange. A connecting hole is provided through the flange. A connecting sleeve is inserted into the connecting hole through which the two flanges communicate. A threaded sleeve is inserted into one of the connecting sleeves, and a screw threadedly connected to the threaded sleeve is inserted into the other connecting sleeve. The ends of the screw and the threaded sleeve are provided with a limiting plate with a diameter larger than that of the connecting hole.

[0010] Preferably, a spring is provided between the two connecting sleeves.

[0011] Preferably, the spring is sleeved outside the screw and the sleeve.

[0012] Preferably, the connecting hole is frustum-shaped, and the connecting sleeve matches the connecting hole.

[0013] Preferably, each of the connecting sleeves is a split structure.

[0014] Preferably, the limiting plate, the screw, and the screw sleeve are separate components.

[0015] Preferably, the bottom of the limiting plate is provided with a positioning sleeve, and the connecting rubber sleeve is provided with a positioning hole for the positioning sleeve to pass through.

[0016] Preferably, the positioning hole is frustum-shaped, and the positioning sleeve matches the positioning hole.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model achieves connection by setting a connecting sleeve inside the flange connection hole, with the screw and sleeve respectively passing through the connecting sleeves of the two flanges. The connecting sleeve effectively isolates the screw, sleeve and flange metal surface, avoiding direct contact between the screw, sleeve and flange, greatly reducing the corrosion of the screw, sleeve and flange connection parts by external environmental factors such as high temperature, high humidity and corrosive gases. It fundamentally reduces the probability of bolts rusting and jamming in the flange connection hole, effectively ensuring the reliability and service life of the connecting parts, and improving the convenience of connecting and disassembling the bellows compensator. Attached Figure Description

[0018] Figure 1 This is a front view of an embodiment of this application;

[0019] Figure 2 This is a partial cross-sectional view of the connection between two flanges in an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the connecting sleeve structure according to an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the structure of the limiting plate in an embodiment of this application. Detailed Implementation

[0022] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments:

[0023] like Figures 1 to 4 As shown, the high-efficiency centrifugal steam compressor of this utility model includes a steam compressor body 1. The steam compressor body 1 is connected to a bellows compensator 2 via a flange 4. Since both the steam compressor body 1 and the bellows compensator 2 are existing product structures, the tie rods at both ends of the bellows compensator are threaded tie rods 3 commonly used in the prior art, with nuts at both ends. This application has not modified them, and their working principles are well known to those skilled in the art, so they will not be described in detail here. In this application, the two flanges 4 that connect the bellows connector to the steam compressor body 1 are each provided with a through connection hole 5. Multiple connection holes 5 are spaced apart along the circumference of the flange 4. A connecting sleeve 6 passes through the connecting hole 5 of the two flanges 4. A threaded sleeve 7 passes through one of the connecting sleeves 6, and a screw 8 that is threadedly connected to the threaded sleeve 7 passes through the other connecting sleeve 6. Both the screw 8 and the threaded sleeve 7 have polygonal ends. Both the screw 8 and the threaded sleeve 7 have a limiting plate 10 with a diameter larger than the connecting hole 5 at their ends, which is used to limit the ends of the screw 8 and the threaded sleeve 7. Preferably, the limiting plate 10, the screw 8, and the screw sleeve 7 are separate components. The limiting plate 10 has a through hole through which the screw 8 and the screw sleeve 7 pass, and the diameter of the through hole is smaller than the end diameter of the screw 8 and the screw sleeve 7.

[0024] Furthermore, a spring 9 is provided between the two connecting sleeves 6. When the screw 8 is connected to the sleeve 7, the connecting sleeve 6 is pushed into the connecting hole 5, at which time the spring 9 is in a compressed state. The spring 9 helps to push the connecting sleeve 6 outward from the connecting hole 5 using the restoring force of the spring 9 after the screw 8 and sleeve 7 are disassembled, making it easier to remove the connecting sleeve 6. Preferably, the spring 9 is sleeved on the outside of the screw 8 and sleeve 7, with both ends abutting against the corresponding connecting sleeve 6.

[0025] Furthermore, the connecting hole 5 is frustoconical, and the connecting sleeve 6 matches the connecting hole 5. With this configuration, the tapered characteristic of the frustoconical structure allows the connecting sleeve 6 to be installed. As the connecting sleeve 6 gradually penetrates the frustoconical connecting hole 5, the hole wall exerts an inward squeezing force on the connecting sleeve 6, creating an interference fit between the connecting sleeve 6 and the connecting hole 5. This fit not only prevents the connecting sleeve 6 from loosening or shifting during use, ensuring it consistently isolates and protects the connection between the screw 8, the threaded sleeve 7, and the flange 4, but also eliminates the need for complex positioning and tightening measures during installation, simplifying operation and improving production assembly efficiency. In addition, the frustoconical connecting hole 5 and the matching connecting sleeve 6 form a tighter sealing structure. During the operation of the steam compressor, this effectively prevents external moisture and corrosive media from intruding into the flange 4 connection, further enhancing the protection of the screw 8 and the threaded sleeve 7 and reducing the risk of corrosion caused by external environmental factors. Meanwhile, good sealing helps maintain stable pressure within the steam compressor system, reduces steam leakage, improves energy efficiency, and lowers operating costs. The frustum-shaped connecting hole 5 and the matching connecting sleeve 6 form a tighter sealing structure. During steam compressor operation, this effectively prevents external moisture and corrosive media from intruding into the flange 4 connection area, further enhancing the protection of the screw 8 and the sleeve 7, and reducing the risk of corrosion caused by external environmental factors. Good sealing helps maintain stable pressure within the steam compressor system, reduces steam leakage, improves energy efficiency, and lowers operating costs.

[0026] Preferably, the connecting sleeve 6 is a split structure, that is, the connecting sleeve 6 is composed of two split structures; the split structure is convenient for installation and disassembly, and also facilitates subsequent targeted replacement without the need for overall replacement, thus reducing maintenance costs.

[0027] Furthermore, a positioning sleeve 11 protrudes from the bottom of the limiting plate 10, and a positioning hole 12 is provided on the connecting sleeve 6 for the positioning sleeve 11 to pass through. The positioning hole 12 is preferably frustum-shaped, and the positioning sleeve 11 matches the positioning hole 12. A through hole is provided inside the positioning sleeve 11 for the screw 8 and the threaded sleeve 7 to pass through. As the screw 8 and the threaded sleeve 7 are connected, the limiting plate 10 will push the connecting sleeve 6 into the connecting hole 5, and the positioning sleeve 11 will enter the positioning hole 12 and squeeze the connecting sleeve 6, so that the connecting sleeve 6 is tightly against the inner wall of the connecting hole 5, improving the stability of the connecting sleeve 6 during operation. At the same time, the squeezing of the connecting sleeve 6 by the positioning sleeve 11 makes the connecting sleeve 6 tightly fit against the inner wall of the connecting hole 5 and the wall of the positioning hole 12, further enhancing the sealing effect. This tight sealing structure can effectively prevent external moisture, corrosive media and other substances from entering the flange 4 connection, while reducing steam leakage inside the steam compressor system, maintaining stable system pressure, improving energy efficiency, reducing operating costs, and reducing safety risks caused by media leakage.

[0028] When disassembling the bellows compensator 2, this utility model only requires screwing the threaded sleeve 7 and the screw rod 8 to separate them. Since both the threaded sleeve 7 and the screw rod 8 are inside the connecting rubber sleeve 6, they are effectively isolated from the metal surface of the flange 4, greatly reducing the corrosion of the connecting parts of the screw rod 8, threaded sleeve 7, and flange 4 by external environmental factors such as high temperature, high humidity, and corrosive gases. This fundamentally reduces the probability of bolts rusting and jamming in the connecting hole 5 of the flange 4, effectively ensuring the reliability and service life of the connecting components and improving the convenience of connecting and disassembling the bellows compensator 2. As the screw rod 8 and threaded sleeve 7 are disassembled, the spring 9 will exert an outward pushing force on the connecting rubber sleeve 6 under its restoring force, causing the connecting rubber sleeve 6 to shift, making it easier to remove the connecting rubber sleeve 6, further improving the convenience of operation. The structure is simple, the operation is convenient, and the practicality is strong.

Claims

1. A high efficiency centrifugal vapor compressor comprising a vapor compressor body, said vapor compressor body having a bellows compensator connected thereto by a flange, characterized in that: The flange is provided with a connecting hole, two connecting rubber sleeves are arranged in the connecting holes of the flanges, a screw sleeve is arranged in one of the connecting rubber sleeves, and a screw rod is arranged in the other connecting rubber sleeve and is screwed with the screw sleeve.

2. The high efficiency centrifugal vapor compressor of claim 1, wherein: A spring is arranged between the two connecting rubber sleeves.

3. The high efficiency centrifugal vapor compressor of claim 2, wherein: The spring is arranged outside the screw rod and the screw sleeve.

4. The high efficiency centrifugal vapor compressor of claim 1, wherein: The connecting hole is a circular truncated cone, and the connecting rubber sleeve matches the connecting hole.

5. The high efficiency centrifugal vapor compressor of claim 4, wherein: Each connecting rubber sleeve is a split structure.

6. The high efficiency centrifugal vapor compressor of claim 5, wherein: The limiting plate is arranged separately from the screw rod and the screw sleeve.

7. The high efficiency centrifugal vapor compressor of claim 6, wherein: A positioning sleeve is arranged on the bottom of the limiting plate, and a positioning hole is arranged on the connecting rubber sleeve for the positioning sleeve.

8. The high efficiency centrifugal vapor compressor of claim 7, wherein: The positioning hole is a circular truncated cone, and the positioning sleeve matches the positioning hole.

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