CN114810669A

CN114810669A - Split type centrifugal compressor volute structure

Info

Publication number: CN114810669A
Application number: CN202210393159.9A
Authority: CN
Inventors: 惠建忠
Original assignee: Wuxi Pujin Precision Machinery Manufacturing Co ltd
Current assignee: Wuxi Pujin Precision Machinery Manufacturing Co ltd
Priority date: 2022-04-15
Filing date: 2022-04-15
Publication date: 2022-07-29

Abstract

The invention discloses a volute structure of a split centrifugal compressor, which comprises a first volute and a second volute, wherein a first mounting plate and a second mounting plate are respectively welded on the peripheries of the first volute and the second volute, a connecting structure is arranged between the first mounting plate and the second mounting plate, an air inlet pipe is vertically communicated with the center of the side surface of the first volute, a buffer frame is welded on one side of the inner periphery of the air inlet pipe, the middle part of the inner periphery of the air inlet pipe is connected with a mounting frame in a sliding manner, a filter screen is installed in the mounting frame, a second spring is horizontally welded between the mounting frame and the buffer frame, a cleaning mechanism for cleaning the filter screen is arranged in the air inlet pipe, and a dust collecting mechanism is arranged at the bottom of the air inlet pipe. The volute is convenient and quick to disassemble and install, and internal components are convenient to maintain and replace; the dust in the air inlet gas can be filtered, and the impact force on the filter screen can be buffered; the filter screen can be automatically cleaned, an additional driving mechanism is not needed, and the structure is simpler.

Description

Split type centrifugal compressor volute structure

Technical Field

The invention relates to the technical field of gas compressors, in particular to a volute structure of a split type centrifugal gas compressor.

Background

The impeller type air compressor is divided into a radial flow type (centrifugal type) and an axial flow type, the centrifugal type air compressor is suitable for medium and small production volumes, has high rotating speed but low efficiency, has the characteristics of small volume, high single-stage supercharging ratio and the like, and is widely applied to power systems in the fields of aviation, ships and the like. The volute of the compressor is provided with an air flow inlet and an air flow outlet, the inlet is generally arranged in an axial direction, and a flow passage is slightly reduced gradually to reduce air inlet resistance; the outlet is typically designed as a volute with a circumferentially diverging flow path, where the high velocity gas stream continues to diffuse, increasing the overall efficiency of the supercharger.

The conventional centrifugal compressor volute is of an integral structure, so that once the structures such as an inner impeller and the like are damaged, the integral volute needs to be replaced, and the cost is high, so that a split type centrifugal compressor volute is needed, and the volute can be disassembled to maintain and replace the inner structure; the conventional centrifugal compressor volute cannot filter gas when gas enters, and impurities such as dust in the gas are adhered to the surface of the impeller for a long time to easily influence the rotation of the impeller.

Disclosure of Invention

The invention discloses a volute structure of a split centrifugal compressor, and aims to solve the technical problem in the background technology.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a split type centrifugal compressor spiral case structure, includes first spiral case and second spiral case, first mounting panel and second mounting panel have been welded respectively to the periphery of first spiral case and second spiral case, be equipped with connection structure between first mounting panel and the second mounting panel, the perpendicular intercommunication of first spiral case side center department has the intake pipe, the one side welding that is close to first spiral case in the intake pipe has the buffering frame, the interior week middle part sliding connection of intake pipe has the installing frame, install the filter screen in the installing frame, horizontal welding has the second spring between installing frame and the buffering frame, be equipped with the clearance mechanism that clears up the filter screen in the intake pipe, the intake pipe bottom is equipped with collection dirt mechanism.

Through being provided with filter screen and second spring, when the intake pipe admitted air, the filter screen filtered the dust in the gas, avoided the long-term adhesion of dust to influence the rotation of impeller at the impeller surface, and gaseous impulsive force makes the filter screen toward buffering frame direction removal extrusion second spring, and the second spring produces the bounce force and cushions the impact force that the filter screen received, avoids the filter screen to damage because of the impact force is too big.

In a preferred scheme, first mounting panel and second mounting panel all are equipped with threely, three first mounting panel and second mounting panel respectively even set up in first spiral case and second spiral case periphery, first mounting panel and second mounting panel position phase-match.

In a preferred scheme, the connecting structure comprises an inserting block and a triangular oblique block, the inserting block is vertically welded to the middle of one side of the first mounting plate, the middle part of the second mounting plate is provided with jacks which are matched with the inserting blocks, two triangular inclined blocks are arranged and respectively penetrate through two opposite sides of the inserting blocks, the triangular oblique blocks are connected with the insert blocks in a sliding mode, moving rods are welded on one sides of the two triangular oblique blocks positioned in the insert blocks, the same first spring is vertically welded between the two moving rods, linkage rods are hinged to the middle portions of the two moving rods, the other ends of the two linkage rods are hinged to the same pull rod, the other end of the pull rod penetrates through one end of the inserting block and is connected with the inserting block in a sliding way, the other end of the pull rod is welded with a pull disc, l-shaped limiting rods are welded on the inner walls of two opposite sides of the insertion block, and the L-shaped limiting rods penetrate through the two moving rods and are connected with the moving rods in a sliding mode.

Through the arrangement of the connecting structure, when the first volute and the second volute are required to be connected together, the inserting block is inserted by aligning with the inserting hole, the inner wall of the inserting hole extrudes the triangular oblique block, the triangular oblique block is extruded into the inserting block, after the triangular oblique block crosses the inserting hole, the two triangular oblique blocks return to the outside of the inserting block again under the action of the rebounding force of the first spring, the vertical surface of the triangular oblique block is abutted against the side surface of the second mounting plate, so that the inserting block cannot be separated from the inserting hole, the first volute and the second volute are tightly connected together, and the connecting part is sealed after the first volute and the second volute are mounted; when the subassembly of spiral case needs to be maintained and changed, only need handheld pull disk outwards to pull out the pull rod, the pull rod makes two movable rods remove in opposite directions through the effect of two gangbars, then draw in the inserted block inside again with two triangle sloping blocks, extract the split that can accomplish first spiral case and second spiral case from the jack with the inserted block again, avoid appearing the spiral case and be overall structure and can't be to the condition of internal component maintenance change, need not to change whole spiral case, the cost is saved, and the split of spiral case and the installation mean square of spiral case are just swift, make things convenient for the maintenance of internal component to change.

In a preferable scheme, the top of each of the first volute and the second volute is horizontally communicated with an air outlet pipe, a plurality of second springs are arranged, and the plurality of second springs are uniformly distributed between the mounting frame and the buffer frame along the circumference.

In a preferred scheme, clearance mechanism includes the brush, the inside center department of intake pipe is equipped with the collar, collar periphery vertical welding has the dead lever, the dead lever is equipped with three and evenly distributed in the collar periphery, and is three the dead lever other end all welds in the intake pipe inner wall, the collar internal rotation is connected with the bull stick, the brush vertical welding is in the bull stick periphery, the brush is equipped with a plurality ofly and evenly distributed in the bull stick periphery, the brush other end and intake pipe inner wall contactless, it is a plurality of filter screen and brush hair are hugged closely to the brush hair side of brush are enough long, make the brush hair move the in-process still can brush the dust on filter screen surface toward the buffering frame at filter screen at utmost.

Through being provided with clearance mechanism, when the intake pipe admits air, a plurality of brushes drive the bull stick and rotate in the installation ring under the drive of wind-force, make a plurality of brushes can sweep filterable dust on the filter screen, can carry out automatic clearance to the filter screen, avoid the filter screen to block up the influence and admit air, and only utilize the wind-force of admitting air to make the brush rotate and carry out the clearance work, need not other actuating mechanism, the structure is more succinct, practice thrift the cost.

In a preferred scheme, the dust collection mechanism comprises a dust collection box, a notch is formed in the bottom, located on one side, away from the buffering frame, of the mounting frame in the air inlet pipe, the dust collection box is welded to the bottom of the air inlet pipe and located under the notch, the top of the dust collection box is of an open structure, and a side door is hinged to one side of the dust collection box.

Through being provided with dust collecting mechanism, the dust that the filter screen was swept to the brush drops into the dust collecting box through the notch in, can collect the dust, convenient follow-up unified clearance.

From the above, the split centrifugal compressor volute structure provided by the invention avoids the situation that the volute is of an integral structure and cannot be maintained and replaced for internal components, the whole volute does not need to be replaced, the cost is saved, the disassembly and installation of the volute are convenient and fast, and the maintenance and replacement of the internal components are convenient; the dust in the air can be filtered, the dust is prevented from being adhered to the surface of the impeller for a long time to influence the rotation of the impeller, the impact force on the filter screen can be buffered, and the filter screen is prevented from being damaged due to overlarge impact force; can carry out automatic clearance to the filter screen, avoid the filter screen to block up the influence and admit air, and only utilize the wind-force of admitting air to make the brush rotate and carry out the cleaning work, need not other actuating mechanism, the structure is more succinct, practice thrift the cost, and can collect the dust, convenient follow-up unified clearance.

Drawings

Fig. 1 is a schematic diagram of a split-type centrifugal compressor volute structure in a split state according to the present invention.

Fig. 2 is an internal cross-sectional view of an insert block of a volute structure of a split centrifugal compressor according to the present invention.

Fig. 3 is an enlarged view of the volute structure of the split centrifugal compressor at a position a.

Fig. 4 is an internal cross-sectional view of an air inlet pipe of a volute structure of a split centrifugal compressor according to the present invention.

Fig. 5 is a schematic view of the integrated state of the volute structure of the split centrifugal compressor according to the present invention.

Fig. 6 is a connection state cross-sectional view of a connection structure of a volute structure of a split centrifugal compressor according to the present invention.

In the figure: 1. inserting a block; 2. a first mounting plate; 3. a first volute; 4. a notch; 5. a dust collecting box; 6. an air inlet pipe; 7. a triangular oblique block; 8. a jack; 9. a second volute; 10. an air outlet pipe; 11. a second mounting plate; 12. an L-shaped limiting rod; 13. a travel bar; 14. a first spring; 15. pulling the movable disc; 16. a pull rod; 17. a linkage rod; 18. installing a frame; 19. a brush; 20. a mounting ring; 21. a rotating rod; 22. fixing the rod; 23. filtering with a screen; 24. a second spring; 25. and buffering the frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-6, a split centrifugal compressor volute structure comprises a first volute 3 and a second volute 9, a first mounting plate 2 and a second mounting plate 11 are welded to the peripheries of the first volute 3 and the second volute 9 respectively, a connecting structure is arranged between the first mounting plate 2 and the second mounting plate 11, an air inlet pipe 6 is vertically communicated with the center of the side face of the first volute 3, a buffering frame 25 is welded to one side, close to the first volute 3, of the inner periphery of the air inlet pipe 6, a mounting frame 18 is connected to the middle of the inner periphery of the air inlet pipe 6 in a sliding mode, a filter screen 23 is installed in the mounting frame 18, a second spring 24 is horizontally welded between the mounting frame 18 and the buffering frame 25, a cleaning mechanism for cleaning the filter screen 23 is arranged in the air inlet pipe 6, and a dust collecting mechanism is arranged at the bottom of the air inlet pipe 6. When the air inlet pipe 6 admits air, the filter screen 23 filters dust in the air, the rotation of the impeller is prevented from being influenced by the long-term adhesion of the dust on the surface of the impeller, the impact force of the air enables the filter screen 23 to move towards the direction of the buffer frame 25 to extrude the second spring 24, the second spring 24 generates the bounce force to buffer the impact force on the filter screen 23, and the filter screen 23 is prevented from being damaged due to the overlarge impact force.

Referring to fig. 1, 2, 4 and 5, in a preferred embodiment, three first mounting plates 2 and three second mounting plates 11 are provided, the three first mounting plates 2 and the three second mounting plates 11 are respectively and uniformly arranged on the peripheries of the first volute 3 and the second volute 9, and the positions of the first mounting plates 2 and the second mounting plates 11 are matched.

Referring to fig. 1, 3 and 6, in a preferred embodiment, the connection structure includes an insert block 1 and a triangular oblique block 7, the insert block 1 is perpendicularly welded in the middle of one side of the first mounting plate 2, a jack 8 is formed in the middle of the second mounting plate 11, the jack 8 is matched with the insert block 1, the triangular oblique block 7 is provided with two triangular oblique blocks 7, the two triangular oblique blocks 7 respectively penetrate through two opposite sides of the insert block 1, and the triangular oblique block 7 is slidably connected with the insert block 1.

Referring to fig. 1, 3 and 6, in a preferred embodiment, moving rods 13 are welded on one side of each of two triangular oblique blocks 7 located inside the insert block 1, the same first spring 14 is vertically welded between the two moving rods 13, linkage rods 17 are hinged to the middle portions of the two moving rods 13, and the same pull rod 16 is hinged to the other end of each of the two linkage rods 17.

Referring to fig. 1, 3 and 6, in a preferred embodiment, the other end of the pull rod 16 penetrates through one end of the insert 1 and is slidably connected with the insert 1, the other end of the pull rod 16 is welded with a pull disc 15, the inner walls of two opposite sides of the insert 1 are welded with L-shaped limiting rods 12, and the two L-shaped limiting rods 12 respectively penetrate through the two moving rods 13 and are slidably connected with the moving rods 13.

When the first volute 3 and the second volute 9 need to be connected together, the inserting block 1 is inserted in alignment with the inserting hole 8, the inner wall of the inserting hole 8 extrudes the triangular oblique block 7, the triangular oblique block 7 is extruded into the inserting block 1, after the triangular oblique block 7 crosses the inserting hole 8, the two triangular oblique blocks 7 return to the outside of the inserting block 1 again under the action of the rebound force of the first spring 14, the vertical surface of the triangular oblique block 7 is abutted against the side surface of the second mounting plate 11, so that the inserting block 1 cannot be separated from the inserting hole 8, the first volute 3 and the second volute 9 are tightly connected together, and the connecting part is sealed after the first volute 3 and the second volute 9 are mounted; when the subassembly of spiral case needs to be maintained and changed, only need hand pull disk 15 outwards to pull out pull rod 16, pull rod 16 makes two movable rods 13 remove in opposite directions through the effect of two gangbars 17, then draw in inserted block 1 inside again with two triangle sloping blocks 7, extract inserted block 1 again from jack 8 and can accomplish the split of first spiral case 3 and second spiral case 9, avoid appearing the spiral case and can't be to the condition of internal component maintenance change for overall structure, need not to change whole spiral case, the cost is saved, and the split of spiral case is just swift with the installation mean square, make things convenient for the maintenance of internal component to change.

Referring to fig. 1 and 4, in a preferred embodiment, the air outlet pipe 10 is horizontally communicated with the tops of the first volute 3 and the second volute 9, a plurality of second springs 24 are provided, and the plurality of second springs 24 are uniformly distributed between the mounting frame 18 and the buffer frame 25 along the circumference.

Referring to fig. 1 and 4, in a preferred embodiment, the cleaning mechanism includes a brush 19, a mounting ring 20 is disposed at the center of the inside of the air inlet pipe 6, fixing rods 22 are perpendicularly welded to the periphery of the mounting ring 20, the fixing rods 22 are three and uniformly distributed on the periphery of the mounting ring 20, and the other ends of the three fixing rods 22 are welded to the inner wall of the air inlet pipe 6.

Referring to fig. 1 and 4, in a preferred embodiment, a rotating rod 21 is rotatably connected in the mounting ring 20, the brushes 19 are perpendicularly welded to the periphery of the rotating rod 21, the brushes 19 are provided with a plurality of brushes 19 and uniformly distributed on the periphery of the rotating rod 21, the other ends of the brushes 19 are not in contact with the inner wall of the air inlet pipe 6, the brush sides of the brushes 19 are tightly attached to the filter screen 23, and the brush bristles are long enough, so that the brush bristles can still brush off dust on the surface of the filter screen 23 during the movement of the filter screen 23 to the maximum extent towards the buffer frame 25. When intake 6 admit air, a plurality of brushes 19 drive bull stick 21 at the internal rotation of collar 20 under the drive of wind-force, make a plurality of brushes 19 can sweep filterable dust on the filter screen 23, can carry out automatic clearance to filter screen 23, avoid filter screen 23 to block up the influence and admit air, and only utilize the wind-force of admitting air to make brushes 19 rotate and carry out the cleaning work, need not other actuating mechanism, the structure is more succinct, practice thrift the cost.

Referring to fig. 1, in a preferred embodiment, the dust collecting mechanism includes a dust collecting box 5, a notch 4 is opened at the bottom of the air inlet pipe 6 on one side of the mounting frame 18 far away from the buffering frame 25, the dust collecting box 5 is welded at the bottom of the air inlet pipe 6 and is located under the notch 4, the top of the dust collecting box 5 is in an open structure, and a side door is hinged on one side of the dust collecting box 5. The dust swept by the brush 19 and falling off the filter screen 23 falls into the dust collecting box 5 through the notch 4, and can be collected, so that the subsequent opening of the side door can be conveniently and uniformly cleaned.

The working principle is as follows: when the plug-in block is used, when the first volute 3 and the second volute 9 need to be connected together, the plug-in block 1 is inserted in alignment with the plug hole 8, the inner wall of the plug hole 8 extrudes the triangular sloping block 7, the triangular sloping block 7 is extruded into the plug-in block 1, after the triangular sloping block 7 crosses the plug hole 8, the two triangular sloping blocks 7 return to the outside of the plug-in block 1 again under the action of the resilience force of the first spring 14, the vertical surface of the triangular sloping block 7 is abutted against the side surface of the second mounting plate 11, so that the plug-in block 1 cannot be separated from the plug hole 8, the first volute 3 and the second volute 9 are tightly connected together, and the joint is sealed after the plug-in block is installed; when the components of the volute need to be maintained and replaced, the pull rod 16 is pulled out by only holding the pull disc 15, the pull rod 16 enables the two moving rods 13 to move towards each other under the action of the two linkage rods 17, the two triangular oblique blocks 7 are pulled into the insert block 1 again, and then the insert block 1 is pulled out from the jack 8, so that the first volute 3 and the second volute 9 can be disassembled, the situation that the volute is of an integral structure and cannot be maintained and replaced for the internal components is avoided, the whole volute does not need to be replaced, the cost is saved, the disassembly and the installation of the volute are quick, and the maintenance and the replacement of the internal components are convenient;

when the air inlet pipe 6 is used for air inlet, the filter screen 23 filters dust in the air, the dust is prevented from being adhered to the surface of the impeller for a long time to influence the rotation of the impeller, the filter screen 23 moves towards the direction of the buffer frame 25 by the impulsive force of the air to extrude the second spring 24, the second spring 24 generates a rebound force to buffer the impact force on the filter screen 23, and the filter screen 23 is prevented from being damaged due to overlarge impact force; when intake 6 admit air, a plurality of brushes 19 drive bull stick 21 at the 20 internal rotations of collar under the drive of wind-force, make a plurality of brushes 19 can sweep filterable dust on the filter screen 23, can carry out automatic clearance to filter screen 23, avoid filter screen 23 to block up the influence and admit air, and only utilize the wind-force of admitting air to make brush 19 rotate and carry out the clearance work, need not additional actuating mechanism, the structure is more succinct, save the cost, brush 19 sweeps dust on the filter screen 23 and drops into in the dust-collecting box 5 through notch 4, can collect the dust, convenient follow-up unified clearance.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a split type centrifugal compressor spiral case structure, includes first spiral case (3) and second spiral case (9), its characterized in that, the periphery of first spiral case (3) and second spiral case (9) has welded first mounting panel (2) and second mounting panel (11) respectively, be equipped with connection structure between first mounting panel (2) and second mounting panel (11), first spiral case (3) side center department perpendicular intercommunication has intake pipe (6), one side welding that the interior week of intake pipe (6) is close to first spiral case (3) has buffering frame (25), the middle part sliding connection of the interior week of intake pipe (6) has installing frame (18), install filter screen (23) in installing frame (18), horizontal welding has second spring (24) between installing frame (18) and buffering frame (25), be equipped with the clearance mechanism that clears up filter screen (23) in intake pipe (6), and a dust collecting mechanism is arranged at the bottom of the air inlet pipe (6).

2. The volute structure of the split centrifugal compressor according to claim 1, wherein the number of the first mounting plate (2) and the number of the second mounting plate (11) are three, the three first mounting plates (2) and the three second mounting plates (11) are uniformly arranged on the peripheries of the first volute (3) and the second volute (9), and the first mounting plate (2) and the second mounting plate (11) are matched in position.

3. The volute structure of the split centrifugal compressor of claim 1, wherein the connecting structure comprises an insert block (1) and two triangular oblique blocks (7), the insert block (1) is perpendicularly welded to the middle of one side of the first mounting plate (2), a jack (8) is formed in the middle of the second mounting plate (11), the jacks (8) are matched with the insert block (1), the two triangular oblique blocks (7) are arranged, the two triangular oblique blocks (7) respectively penetrate through two opposite sides of the insert block (1), and the triangular oblique blocks (7) are slidably connected with the insert block (1).

4. The volute structure of the split centrifugal compressor as claimed in claim 3, wherein the two triangular swash blocks (7) are welded with moving rods (13) on one side inside the insert block (1), the same first spring (14) is vertically welded between the two moving rods (13), linkage rods (17) are hinged to the middle parts of the two moving rods (13), and the other ends of the two linkage rods (17) are hinged to the same pull rod (16).

5. The volute structure of the split centrifugal compressor according to claim 4, wherein the other end of the pull rod (16) penetrates through one end of the insert block (1) and is slidably connected with the insert block (1), the other end of the pull rod (16) is welded with a pull disc (15), the inner walls of two opposite sides of the insert block (1) are welded with L-shaped limiting rods (12), and the two L-shaped limiting rods (12) respectively penetrate through the two moving rods (13) and are slidably connected with the moving rods (13).

6. The volute structure of the split centrifugal compressor according to claim 1, wherein the top of each of the first volute (3) and the second volute (9) is horizontally communicated with an air outlet pipe (10), the second springs (24) are provided in plurality, and the second springs (24) are uniformly distributed between the mounting frame (18) and the buffer frame (25) along the circumference.

7. The volute structure of the split centrifugal compressor as claimed in claim 1, wherein the cleaning mechanism comprises a brush (19), a mounting ring (20) is disposed at the center of the inside of the air inlet pipe (6), fixing rods (22) are perpendicularly welded to the periphery of the mounting ring (20), the fixing rods (22) are three and uniformly distributed on the periphery of the mounting ring (20), and the other ends of the three fixing rods (22) are welded to the inner wall of the air inlet pipe (6).

8. The volute structure of the split centrifugal compressor as claimed in claim 7, wherein a rotating rod (21) is rotatably connected in the mounting ring (20), the brush (19) is perpendicularly welded to the periphery of the rotating rod (21), the brush (19) is provided with a plurality of brushes and uniformly distributed on the periphery of the rotating rod (21), the other end of the brush (19) is not in contact with the inner wall of the air inlet pipe (6), and the filter screen (23) is tightly attached to the brush side of the plurality of brushes (19).

9. The volute structure of the split centrifugal compressor of claim 1, wherein the dust collecting mechanism comprises a dust collecting box (5), a notch (4) is formed in the bottom of the air inlet pipe (6) on one side, away from the buffering frame (25), of the mounting frame (18), the dust collecting box (5) is welded to the bottom of the air inlet pipe (6) and located under the notch (4), the top of the dust collecting box (5) is of an open structure, and a side door is hinged to one side of the dust collecting box (5).