A rotor sealing storage device special for large centrifuge unit

Abstract

The utility model belongs to a rotor seal storage device special for large centrifugal unit, including the seal body of being encased in the outside of rotor for large centrifugal unit, the rear surface of seal body is connected with the support unit that can realize the vertical storage of seal body, and the front surface of seal body is equipped with the inert gas filling unit that is connected for realizing that the inside of seal body is under the protection of inert gas, has the advantages that the structure design is reasonable, realizes long -time storage on the basis of avoiding the rust and deformation of rotor.

Description

Technical Field

[0001] This utility model belongs to the field of rotor storage technology, specifically a special rotor sealing storage device for large centrifuge units. Background Technology

[0002] Large centrifuge units are commonly used equipment in chemical enterprises. The rotor is an important component of the centrifuge unit. In order to ensure the stable operation of the centrifuge unit for a long time, enterprises usually store spare rotors to provide support for emergency repairs in case of equipment failure. In traditional technology, spare rotors are usually stored horizontally in wooden boxes, which is prone to corrosion and rust. Furthermore, especially the rotors used in large centrifuge units are affected by gravity, and horizontal storage will cause deformation, resulting in increased coaxiality and failure to meet rotor accuracy standards. In severe cases, it may be impossible to assemble and use them. Utility Model Content

[0003] To overcome the above deficiencies, this utility model provides a special rotor sealing storage device for large centrifuge units to solve the technical problems existing in the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A special rotor sealing storage device for large centrifuge units includes a sealing body fitted outside the rotor of the large centrifuge unit. The rear surface of the sealing body is connected to a support unit that enables the sealing body to be stored vertically. The front surface of the sealing body is provided with an inert gas filling unit for ensuring that the inside of the sealing body is protected by inert gas.

[0006] The beneficial effects of this utility model are as follows: by setting a sealing body, the rotor of a large centrifuge unit can be stored inside it; furthermore, by setting an inert gas filling unit, the rotor of the large centrifuge unit can be kept in a positive pressure inert gas atmosphere, avoiding the risk of corrosion and rust; at the same time, by setting a support unit that enables the sealing body to be stored vertically, the rotor of the large centrifuge unit can be stored vertically, thereby avoiding the problem of deformation caused by gravity on the rotor.

[0007] Preferably, the sealing body includes a front housing and a rear housing, and the outer sides of the front housing and the rear housing are respectively provided with an integral sealing flange, and the sealing flange is evenly distributed with a number of bolt holes; the sealing body is provided with a locking part for fixing the rotor by locking the rotor journal.

[0008] Preferably, the locking part includes a plurality of fixed locking members disposed inside the rear housing, and each fixed locking member is provided with a movable locking member adapted thereto; the locking member includes a flange plate with threaded holes on both sides, and an arc plate adapted to the rotor journal is provided between the two flange plates; the ends of the two flange plates of the fixed locking member are connected to the inner walls of the corresponding two sides of the rear housing, and a support frame plate is provided between the bottom of the arc plate and the bottom inner wall of the rear housing.

[0009] Preferably, the inert gas filling unit includes an inert gas inlet pipe located at the lower part of the outer wall of the front housing and connected to an inert gas storage tank, an inert gas outlet pipe with a pressure gauge located at the upper part of the outer wall of the front housing, and a tee at the end of the inert gas outlet pipe, the second end of the tee being connected to a pressure relief valve, and the third end of the tee being connected to an exhaust valve.

[0010] Preferably, the outer wall of the front housing is provided with lifting lugs for hoisting.

[0011] Preferably, the support unit includes a long frame with a length not less than the length of the front shell or the rear shell, and a short frame with a length not less than the width of the front shell or the rear shell; the two long frames and the two short frames form a support frame, and a plurality of reinforcing ribs are provided between the two long frames; the support frame and the rear shell are connected.

[0012] Preferably, the bottom of the support frame is provided with a base frame.

[0013] Preferably, the inner sides of the two long frames are respectively provided with connecting rods, and the ends of the connecting rods are welded to the connection between the rear housing and the sealing flange.

[0014] Preferably, the inner sides of the two long frames are respectively provided with connecting rods, and the end faces of the connecting rods are provided with screw holes; the screw holes coincide with the bolt holes on the corresponding sealing flanges, and the inner diameters of the screw holes and bolt holes are the same.

[0015] Preferably, each of the long frames is provided with two connecting rods, one of which is located in the upper middle part of the long frame and the other is located in the lower middle part of the long frame; the connecting rods on the two long frames are symmetrically arranged.

[0016] A large centrifuge unit rotor sealing and storage device manufactured according to the above scheme, by setting a front shell and a rear shell to form a sealed body for storing the rotor of the large centrifuge unit, avoids the defects of direct exposure of the rotor to air, which would cause corrosion and rust. Furthermore, the inert gas filling unit can make the aforementioned sealed body a positive pressure inert gas atmosphere, thereby avoiding the problem of rotor contact with air (oxygen) and corrosion and rust. In this utility model, the rotor and the sealed body are tightly and firmly fixed by the locking part, and at the same time, the support unit can realize the purpose of vertical storage of the sealed body, so as to achieve the purpose of vertical storage of the rotor. Through the above structural settings, the rotor can be prevented from being deformed by gravity. It has the advantages of reasonable structural design and long-term storage while avoiding rotor rust and deformation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the external structure of the front housing of this utility model.

[0020] Figure 3 This is a schematic diagram of the internal structure of the rear shell of this utility model.

[0021] Figure 4 This is a schematic diagram showing the positional relationship between the rear housing and the fixing locking component of this utility model.

[0022] Figure 5 This is a schematic diagram of the internal structure of the movable locking component of this utility model.

[0023] Figure 6 This is a schematic diagram of the support unit of this utility model.

[0024] In the diagram: 1. Front housing; 2. Rear housing; 3. Sealing flange; 4. Bolt hole; 5. Flange plate; 6. Arc plate; 7. Support frame plate; 8. Inert gas storage tank; 9. Pressure gauge; 10. Pressure relief valve; 11. Exhaust valve; 12. Lifting lug; 13. Long frame; 14. Short frame; 15. Reinforcing rib; 16. Connecting rod; 17. Bolt hole; 18. Base frame. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] The following is in conjunction with the appendix Figure 1 To further describe this application in detail, this utility model is a special rotor sealing and storage device for large centrifuge units. The sealing and storage device includes a sealing body that is fitted outside the rotor of the large centrifuge unit. The rear surface of the sealing body is connected to a support unit that enables the sealing body to be stored vertically. The front surface of the sealing body is provided with an inert gas filling unit that enables the inside of the sealing body to be protected by inert gas. This invention is applicable to the storage of rotors in centrifuge units, especially for rotors specifically designed for large centrifuge units. By incorporating a sealing body, the rotor is isolated from external air to prevent corrosion. Furthermore, an inert gas filling unit allows inert gas to fill the interior of the sealing body, protecting the rotor and preventing corrosion and rust. The inert gas used in the inert gas filling unit is nitrogen, helium, etc. The rear surface of the sealing body is connected to a support unit, enabling vertical storage of the sealing body and thus the rotor, preventing deformation due to gravity. The rear surface of the sealing body and the support unit can be fixedly or detachably connected. Fixed connections can use conventional methods such as welding or bonding; detachable connections can use conventional methods such as bolting or locking. It is important to note that the sealing body not only isolates the rotor from air to prevent corrosion but also provides physical protection, preventing deformation caused by collisions or vibrations. It should be noted that the large centrifuge unit described in this utility model refers to a rotor shaft length between 1600 and 2200 mm and a flow rate between 90 and 130 m³ / h. 3 Centrifuge units with a flow rate between 900 and 1200 m / h, a speed between 2500 and 3500 r / min, and 8 to 13 impeller stages.

[0027] Further, see Figure 1 , 2As shown in Figure 3, the sealing body includes a front housing 1 and a rear housing 2. An integral sealing flange 3 is provided on the outer side of both the front housing 1 and the rear housing 2. Several bolt holes 4 are evenly distributed on the sealing flange 3. The sealing body has a locking part inside for fixing the rotor by locking the rotor journal. The sealing body in this invention is composed of a front housing 1 and a rear housing 2. The front housing 1 and the rear housing 2 are fixed and sealed by bolts passing through the bolt holes 4. Furthermore, the front housing 1, the rear housing 2, and the sealing flange 3 in this invention are all made of stainless steel. This invention also includes a locking part that can fix the rotor inside the sealing body to prevent shaking and collision during storage, which could damage the rotor or the sealing body. Furthermore, the locking part can be located inside the front housing 1 or the rear housing 2.

[0028] Further, see Figure 3 , 4 As shown in Figure 5, the locking part includes several fixed locking components disposed inside the rear housing 2, and each fixed locking component is provided with a movable locking component adapted to it; the locking component includes a flange plate 5 with threaded holes on both sides, and an arc plate 6 adapted to the rotor journal is disposed between the two flange plates 5; the ends of the two flange plates 5 of the fixed locking component are connected to the inner walls of the corresponding two sides of the rear housing 2, and a support frame plate 7 is disposed between the bottom of the arc plate 6 and the bottom inner wall of the rear housing 2. In this invention, the inner side of the rear housing 2 is connected to the front housing 1 to form a sealing body, and its outer side forms a stable structure with the support unit. Based on this, it is preferable to set the fixing and locking parts inside the rear housing 2 to achieve the characteristic of structural stability. The ends of the flange plates 5 on both sides of the fixing and locking parts are welded to the corresponding inner walls of the rear housing 2. The bottom of the arc plate 6 is fixedly connected to the bottom inner wall of the rear housing 2 through the support frame plate 7. The above structure enables the rear housing 2 to provide stable support for the rotor. The screw passes through the threaded holes of the movable locking part flange plate 5 and the fixed locking part flange plate 5 to achieve a tight connection between the movable locking parts and the rotor. The above structure enables the rotor and the rear housing 2 (and the sealing body) to become an integral structure to protect the rotor and avoid collisions and shaking.

[0029] Further, see Figure 1As shown, the inert gas filling unit includes an inert gas inlet pipe located at the lower part of the outer wall of the front housing 1 and connected to the inert gas storage tank 8, and an inert gas outlet pipe with a pressure gauge 9 located at the upper part of the outer wall of the front housing 1. The end of the inert gas outlet pipe is provided with a tee, the second end of which is connected to the pressure relief valve 10, and the third end of which is connected to the exhaust valve 11. This invention uses an inert gas storage tank 8 and an inert gas inlet pipe to transport inert gas into the sealed body, thereby isolating the rotor from air and preventing rotor corrosion. Preferably, the inert gas storage tank 8 and the inert gas inlet pipe are detachably connected, and the inert gas inlet pipe is equipped with a valve to allow the same inert gas storage tank 8 to fill multiple sealed bodies with inert gas. The exhaust valve 11 mentioned in this invention is mainly used for gas replacement within the sealed body. After gas replacement is completed, the exhaust valve 11 is closed, allowing the inert gas in the inert gas storage tank 8 to continue entering the sealed body. When the pressure displayed on the pressure gauge 9 reaches a preset threshold, the inert gas storage tank 8 is closed. When the rotor needs to be used, the pressure relief valve 10 is opened to allow the inert gas to be discharged. After the gas discharge structure is completed, the sealed body can be opened.

[0030] Further, see Figure 1 , 2 As shown, the outer wall of the front housing 1 is provided with lifting lugs 12 for hoisting. By providing lifting lugs 12, the purpose of hoisting can be facilitated, which enables the vertical storage of the sealing body and the storage and removal of the rotor when the sealing body is laid horizontally.

[0031] Further, see Figure 1 , 6 As shown, the support unit includes a long frame 13 with a length not less than the length of the front housing 1 or the rear housing 2, and a short frame 14 with a length not less than the width of the front housing 1 or the rear housing 2; the two long frames 13 and the two short frames 14 form a support frame, and a plurality of reinforcing ribs 15 are provided between the two long frames 13; the support frame and the rear housing 3 are connected. The length and width of the support frame in this invention are not less than the width and length of the sealing body, so as to protect the sealing body and avoid damage caused by collision during suspension (when the sealing body is damaged, it is easy to affect its sealing performance, thus failing to ensure that the rotor is isolated from the air and avoid corrosion). The support frame and the rear housing 3 in this invention can be connected by a fixed connection or a detachable connection. A fixed connection makes the structure more robust and reliable, while a detachable connection facilitates the fixing and disassembly of the rotor and the sealing body.

[0032] Further, see Figure 1 , 6As shown, the bottom of the support frame is provided with a base frame 18. The sealing body described in this utility model can be suspended on a wall or related rack by the support unit. When it is inconvenient to suspend it on a wall or rack, the base frame 18 can be used to make the support unit upright, so as to achieve vertical storage of the sealing body.

[0033] Furthermore, the inner sides of the two long frames 13 are respectively provided with connecting rods 16, and the ends of the connecting rods 16 are welded to the connection between the rear housing 2 and the sealing flange 3. When a fixed connection is adopted, one end of the connecting rod 16 is welded to the inner side of the long frame 13, and the other end of the connecting rod 16 is welded to the rear surface of the sealing body. Specifically, the other end of the connecting rod 16 is connected at the connection between the rear housing 2 and the sealing flange 3.

[0034] Further, see Figure 6 As shown, the inner sides of the two long frames 13 are respectively provided with connecting rods 16, and the end face of the connecting rod 16 is provided with a screw hole 17; the screw hole 17 coincides with the bolt hole 4 on the corresponding sealing flange 3, and the inner diameter of the screw hole 17 and the bolt hole 4 are the same. When disassembly connection is adopted, one end of the connecting rod 16 is welded to the inner side of the long frame 13, and the other end face of the connecting rod 16 is provided with a screw hole 17. During assembly, the screw passes through the bolt hole 4 on the sealing flange 3 in the front housing 1 and the bolt hole 4 on the sealing flange 3 in the rear housing 2 and is threaded to the screw hole 17; that is, in the normal position of the sealing flange 3, the front housing 1 and the rear housing 2 can be fixed together with short bolts. When there is a screw hole 17 at the rear of the sealing flange 3, a relatively long bolt is selected to fix the front housing 1, the rear housing 2 and the connecting rod 16 together; the above method has the characteristics of simple structure, reasonable design and strong reliability, while saving the connection position of the connecting rod 16 and the sealing body.

[0035] Furthermore, each of the long frames 13 is provided with two connecting rods 16, one of which is located in the upper middle part of the long frame 13, and the other is located in the lower middle part of the long frame 13; the connecting rods 16 on the two long frames 13 are symmetrically arranged. The above arrangement can achieve a robust and reliable direct structure between the support frame and the sealing body.

[0036] The specific working process of this utility model is as follows: When it is necessary to store the rotor, the rear housing 2 is placed horizontally, and the rotor's neck shaft is placed on top of the arc-shaped plate 6 of the fixed locking component. The sides and bottom of the fixed locking component provide support for the fixed locking component to ensure its firmness and reliability. At the same time, the movable locking component is placed on top of the fixed locking component, and bolts are inserted into the threaded holes of the flange plates 5 of the fixed locking component and the movable locking component to tighten them and lock the rotor (to prevent the rotor from shaking). After the rotor is tightened, the front housing 1 is placed on top of the rear housing 2, and bolts are inserted into the bolt holes. 4. (When the connecting rod 16 is detachable, the bolts that match the screw holes 17 are installed when the sealing body is vertically suspended), so that the front housing 1 and the rear housing 2 form a detachable perfect sealing body; after the sealing body is installed, it can be vertically suspended for storage. When suspended for storage, hooks can be set on the wall. After the sealing body and the support unit are fixed into an integral structure, the short frame 14 or the reinforcing rib 15 on the support unit cooperates with the hooks to achieve suspension; or expansion bolts that match the wall can be set on the short frame 14 or the reinforcing rib 15 for vertical storage (it can be hoisted by the lifting lugs 12 when placed). After the above vertical suspension storage, the inert gas in the inert gas storage tank 8 enters the sealing body, and the exhaust valve 11 is opened to replace the gas in the sealing body. After the gas replacement is completed, the exhaust valve 11 is closed, so that the inert gas in the inert gas storage tank 8 continues to enter the sealing body. When the pressure displayed in the pressure gauge 9 reaches the preset threshold, the inert gas storage tank 8 is closed. During the storage process described above, neither the upper nor lower end faces of the rotor come into contact with the inner wall of the sealed body. Components such as the impeller and balance disc on the rotor are not subjected to stress, thus maximizing the protection of the rotor's precision. Simultaneously, the inert gas provides a suitable micro-positive pressure environment for the rotor, further inhibiting oxidation and corrosion and extending its storage life. Furthermore, when the pressure inside the sealed body is too high, it can be relieved through the pressure relief valve 10. When the rotor needs to be used, first open the pressure relief valve 10 to relieve pressure on the sealed body. After pressure relief, use the lifting lugs to lay the rear housing 2 horizontally flat. Then, remove the screws to separate the front housing 1 and the rear housing 2. Finally, remove the bolts to separate the fixed locking parts from the movable locking parts, and then remove the rotor. This invention features a reasonable design and a simple, robust structure, capable of supporting, locking, and vertically suspending and fixing the rotor, avoiding uneven stress, deformation, and damage caused by prolonged flat placement. It also provides an inert gas sealed environment, effectively preventing oxidation reactions between the rotor and oxygen, which can lead to surface corrosion.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A special rotor sealing and storage device for large centrifuge units, characterized in that: The sealed storage device includes a sealing body that is fitted outside the rotor of a large centrifuge unit. The rear surface of the sealing body is connected to a support unit that enables the sealing body to be stored vertically. The front surface of the sealing body is connected to an inert gas filling unit that enables the interior of the sealing body to be protected by inert gas.

2. The rotor sealing and storage device for large centrifuge units according to claim 1, characterized in that: The sealing body includes a front housing (1) and a rear housing (2). The outer sides of the front housing (1) and the rear housing (2) are respectively provided with an integral sealing flange (3). Several bolt holes (4) are evenly distributed on the sealing flange (3). The sealing body has a locking part inside for fixing the rotor by locking the rotor journal.

3. The rotor sealing and storage device for large centrifuge units according to claim 2, characterized in that: The locking part includes a plurality of fixed locking parts disposed inside the rear housing (2), and each fixed locking part is provided with a movable locking part adapted thereto; The locking component includes a flange plate (5) with threaded holes on both sides, and an arc plate (6) adapted to the rotor journal is provided between the two flange plates (5). The ends of the flange plates (5) on both sides of the fixed locking component are connected to the inner walls of the corresponding sides of the rear housing (2), and a support frame plate (7) is provided between the bottom of the arc plate (6) and the bottom inner wall of the rear housing (2).

4. A rotor sealing and storage device for large centrifuge units according to claim 2, characterized in that: The inert gas filling unit includes an inert gas inlet pipe located at the lower part of the outer wall of the front housing (1) and connected to an inert gas storage tank (8), and an inert gas outlet pipe with a pressure gauge (9) located at the upper part of the outer wall of the front housing (1). The end of the inert gas outlet pipe is provided with a tee, the second end of which is connected to a pressure relief valve (10), and the third end of which is connected to an exhaust valve (11).

5. A rotor sealing and storage device for large centrifuge units according to claim 4, characterized in that: The outer wall of the front housing (1) is provided with lifting lugs (12) for hoisting.

6. A rotor sealing and storage device for large centrifuge units according to claim 2, characterized in that: The support unit includes a long frame (13) with a length not less than the length of the front shell (1) or the rear shell (2), and a short frame (14) with a length not less than the width of the front shell (1) or the rear shell (2). Two long frames (13) and two short frames (14) form a support frame, and several reinforcing ribs (15) are provided between the two long frames (13); The support frame and the rear shell (2) are connected.

7. A rotor sealing and storage device for large centrifuge units according to claim 6, characterized in that: The bottom of the support frame is provided with a base frame (18).

8. A rotor sealing and storage device for large centrifuge units according to claim 6, characterized in that: The inner sides of the two long frames (13) are respectively provided with connecting rods (16), and the ends of the connecting rods (16) are welded to the connection between the rear housing (2) and the sealing flange (3).

9. A rotor sealing and storage device for large centrifuge units according to claim 6, characterized in that: The inner sides of the two long frames (13) are respectively provided with connecting rods (16), and the end face of the connecting rods (16) is provided with screw holes (17); the screw holes (17) coincide with the bolt holes (4) on the corresponding sealing flanges (3), and the inner diameters of the screw holes (17) and bolt holes (4) are the same.

10. A rotor sealing and storage device for large centrifuge units according to claim 8 or 9, characterized in that: Each of the long frames (13) is provided with two connecting rods (16), one of which is located in the upper middle part of the long frame (13) and the other is located in the lower middle part of the long frame (13). The connecting rods (16) on the two long frames (13) are symmetrically arranged.

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