CN216975354U - Anti-surge structure of centrifugal compressor in multi-effect evaporation process design - Google Patents
Anti-surge structure of centrifugal compressor in multi-effect evaporation process design Download PDFInfo
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- CN216975354U CN216975354U CN202220751221.2U CN202220751221U CN216975354U CN 216975354 U CN216975354 U CN 216975354U CN 202220751221 U CN202220751221 U CN 202220751221U CN 216975354 U CN216975354 U CN 216975354U
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Abstract
The utility model discloses an anti-surge structure of a centrifugal compressor in a multi-effect evaporation process design, which relates to the technical field of compressor anti-surge, and comprises a centrifugal compressor body, wherein the centrifugal compressor body comprises an air inlet pipe and an air outlet pipe, a damping structure is arranged on the centrifugal compressor body, a damping net is fixedly arranged in the air outlet pipe, damping holes are formed in the damping net, the damping structure comprises a ball body which enters the damping holes when the ball body receives gas backflow pressure, the diameter size of the ball body is consistent with the diameter size of the damping holes, a first communicating pipe is fixedly connected to the air outlet pipe, and a backflow structure for gas to flow back to the air inlet pipe is arranged on the first communicating pipe.
Description
Technical Field
The utility model relates to the technical field of compressor surge prevention, in particular to a centrifugal compressor surge prevention structure in a multi-effect evaporation process design.
Background
The centrifugal compressor is also called as "vortex light compressor", the structure and operation principle of which are similar to those of centrifugal blower, but it is always multi-stage, and can make the gas obtain higher pressure, and its treatment capacity is greater, and its efficiency is higher.
The anti-surge structure of the centrifugal compressor in the existing multi-effect evaporation process design comprises an impeller of a motor and the like, the working principle is that the impeller drives gas to rotate at a high speed, so that the gas generates centrifugal force, and the flow velocity and pressure of the gas after passing through the impeller are improved due to diffusion flow of the gas in the impeller.
When the centrifugal compressor runs, when the gas discharge capacity of the compressor of the centrifugal compressor is reduced, the capacity of an impeller reaching a pressure head is also reduced, and at the moment, a surge phenomenon possibly occurs, and the surge phenomenon can obviously deteriorate the performance of the compressor, increase noise, strengthen vibration and other defects, and possibly influence the service life of the compressor.
In order to solve the problems, the utility model provides an anti-surge structure of a centrifugal compressor in a multi-effect evaporation process design.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an anti-surge structure of a centrifugal compressor in a multi-effect evaporation process design, in order to avoid gas backflow in an air outlet pipe, gas can flow through a damping hole when flowing back, the gas can provide pressure for a ball when flowing through the damping hole, the ball can enter the damping hole after being subjected to the pressure, when the ball enters the damping hole and is not more than half of the volume of the ball, the gas can flow through the damping hole, the flowing cross section area of the damping hole is reduced, so that the speed and the frequency of gas backflow are reduced, when the ball enters the damping hole and is more than half of the volume of the ball, the gas does not flow through the damping hole, the gas backflow is avoided, when the gas pushes a piston rod, the movement of the piston rod drives a connecting rod to move, so that the sleeve rod is driven to move, the movement of the sleeve rod enables a spring to generate elastic deformation, when the gas does not push the piston rod, the spring retracts, drive the piston rod and get back to initial position, backflow structure makes in the outlet duct gas can not flow into the inlet duct under initial condition, when gaseous production backward flow, enter into the intake pipe through a communicating pipe and No. two communicating pipes, damping structure can reduce gas reflux speed and frequency, make the spheroid be greater than spheroid volume half when getting into the damping orifice at atmospheric pressure difference, stop gas reflux, thereby avoid the surge phenomenon because gas reflux leads to, avoid the performance of compressor to show the deterioration, avoid gas parameter to produce and increase substantially pulsate, avoid simultaneously because centrifugal compressor because the noise that surge phenomenon arouses strengthens, increase centrifugal compressor's life, thereby the problem in the background art has been solved.
In order to achieve the purpose, the utility model provides the following technical scheme: the centrifugal compressor anti-surge structure in the multi-effect evaporation process design comprises a centrifugal compressor body, wherein the centrifugal compressor body comprises an air inlet pipe and an air outlet pipe, and a damping structure is arranged on the centrifugal compressor body;
the damping net is fixedly installed in the air outlet pipe, damping holes are formed in the damping net, the damping structure comprises a ball body which enters the damping holes when the damping net is subjected to gas backflow pressure, the diameter size of the ball body is consistent with that of the damping holes, a first communicating pipe is fixedly connected to the air outlet pipe, and a backflow structure for gas to flow back to the air inlet pipe is arranged on the first communicating pipe;
furthermore, a supporting seat is fixedly connected in the damping hole, one side of the supporting seat, which is close to the air outlet end of the air outlet pipe, is fixedly connected with one end of a second spring, and the other end of the second spring is fixedly connected with the ball body.
Further, the ball does not enter the damping hole in the initial state, when the ball enters the damping hole and is not more than one half of the volume of the ball, gas can flow through the damping hole, and when the ball enters the damping hole and is more than one half of the volume of the ball, the gas does not flow through the damping hole.
Further, reflux structure includes No. two communicating pipes, No. two communicating pipe fixed connection communicating pipes, and reflux structure includes the piston rod that can be along a communicating pipe inner wall repetitive motion.
Furthermore, a fixed connection fixing base is arranged on the first communicating pipe, a sleeve is fixedly connected to the fixing base, a sleeve rod is sleeved on the sleeve, one end of a spring is fixedly connected to the bottom of the inner wall of the sleeve, the other end of the spring is fixedly connected with one end of the sleeve rod, and the other end of the sleeve rod is fixedly connected with a piston rod through a connecting rod.
Further, the first communication pipe and the second communication pipe are not communicated with each other in the initial state of the piston rod.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model provides an anti-surge structure of a centrifugal compressor in multi-effect evaporation process design, which comprises a centrifugal compressor body, wherein the centrifugal compressor body comprises an air inlet pipe and an air outlet pipe, a damping structure is arranged on the centrifugal compressor body, a damping net is fixedly arranged in the air outlet pipe, a damping hole is arranged on the damping net, the damping structure comprises a ball body which enters the damping hole when the air backflow pressure is received, the diameter size of the ball body is consistent with the diameter size of the damping hole, a first communicating pipe is fixedly connected on the air outlet pipe, a backflow structure for gas to flow back to the air inlet pipe is arranged on the first communicating pipe, the damping structure can reduce the gas backflow speed and frequency, when the air pressure difference enables the ball body to enter the damping hole and is more than half of the ball body volume, the gas backflow is prevented, so that the surge phenomenon caused by the gas backflow is avoided, and the performance of the compressor is prevented from being remarkably deteriorated, the gas parameters are prevented from generating large-amplitude pulsation, and simultaneously, the increase of noise caused by the surging phenomenon of the centrifugal compressor is avoided, and the service life of the centrifugal compressor is prolonged.
2. The utility model provides an anti-surge structure of a centrifugal compressor in the design of a multi-effect evaporation process, a supporting seat is fixedly connected in a damping hole, one side of the supporting seat, which is close to the air outlet end of an air outlet pipe, is fixedly connected with one end of a second spring, the other end of the second spring is fixedly connected with a ball body, the gas flows through the damping hole when flowing back, the pressure is applied to the ball body when flowing through the damping hole, the ball body enters the damping hole after being pressurized, when the ball body enters the damping hole and is not more than half of the volume of the ball body, the gas can flow through the damping hole, at the moment, the flowing cross section area of the damping hole is reduced, thereby reducing the speed and frequency of gas backflow, preventing gas from flowing through the damping hole when the ball enters the damping hole and is more than half of the volume of the ball, avoiding gas backflow at the moment, the size of the gas flowing through the channel is changed through the ball, and the surge phenomenon caused by gas backflow is further avoided.
3. The utility model provides an anti-surge structure of a centrifugal compressor in multi-effect evaporation process design, which comprises a second communicating pipe, wherein the second communicating pipe is fixedly connected with a first communicating pipe, the backflow structure comprises a piston rod capable of repeatedly moving along the inner wall of the first communicating pipe, when the gas pressure of a gas outlet pipe is increased, gas can flow through the first communicating pipe, the gas can push the piston rod, and the first communicating pipe and the second communicating pipe are communicated while the gas pushes the piston rod, so that the gas enters a gas inlet pipe through the second communicating pipe, the pressure difference between the gas outlet pipe and the gas inlet pipe is reduced, the gas backflow is avoided, and the surge phenomenon caused by the gas backflow is further avoided.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a reflow structure of the present invention;
FIG. 3 is a schematic diagram of the position of the damping net according to the present invention;
FIG. 4 is a perspective view of the damping structure of the present invention;
fig. 5 is a cross-sectional view of the damping structure of the present invention.
In the figure: 1. a centrifugal compressor body; 2. an air inlet pipe; 3. an air outlet pipe; 4. a first communicating pipe; 5. a second communicating pipe; 6. a damping net; 61. a damping hole; 7. a reflow structure; 71. a sleeve; 72. a loop bar; 73. a piston rod; 74. a connecting rod; 75. a first spring; 8. a fixed seat; 9. a damping structure; 91. a sphere; 92. a supporting seat; 93. and a second spring.
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. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In order to prevent the surge phenomenon of the centrifugal compressor, as shown in fig. 1-5, the following preferred technical solutions are provided:
the centrifugal compressor anti-surge structure in the multi-effect evaporation process design comprises a centrifugal compressor body 1, wherein the centrifugal compressor body 1 comprises an air inlet pipe 2 and an air outlet pipe 3, and a damping structure 9 is arranged on the centrifugal compressor body 1;
fixed mounting has damping net 6 in outlet duct 3, has seted up damping hole 61 on the damping net 6, and damping structure 9 gets into the spheroid 91 of damping hole 61 when receiving gas reflux pressure, and the diameter size of spheroid 91 is unanimous with damping hole 61 diameter size, and fixedly connected with is No. one communicating pipe 4 on the outlet duct 3, is equipped with the backflow structure 7 that supplies gas reflux to intake pipe 2 on No. one communicating pipe 4.
Specifically, when the flow rate of the compressor is reduced to the minimum value, the outlet pressure suddenly drops, the pressure in the pipeline is higher than the outlet pressure, the conveyed medium flows back into the machine until the outlet pressure rises and the medium is conveyed to the pipeline again, when the pressure in the pipeline is restored to the original pressure, the flow rate is reduced again, the medium in the pipeline flows back again, in order to avoid the backflow of the gas in the gas outlet pipe 3, the gas flows through the damping hole 61 when flowing back, the gas can supply pressure to the ball 91 when flowing through the damping hole 61, the ball 91 enters the damping hole 61 after receiving the pressure, when the ball 91 enters the damping hole 61 and is not more than half of the volume of the ball 91, the gas can flow through the damping hole 61, at the moment, the flowing cross section area of the damping hole 61 is reduced, so that the speed and the frequency of the backflow of the gas are reduced, when the ball 91 enters the damping hole 61 and is more than half of the volume of the ball 91, the gas does not flow through the damping hole 61, at the moment, the gas backflow is avoided, the damping structure 9 can reduce the gas backflow speed and frequency, the gas backflow is prevented when the air pressure difference enables the ball 91 to enter the damping hole 61 and is larger than one-half of the volume of the ball 91, the surge phenomenon caused by the gas backflow is avoided, the performance of the compressor is prevented from being remarkably deteriorated, the gas parameters are prevented from generating large-amplitude pulsation, meanwhile, the noise increase caused by the surge phenomenon of the centrifugal compressor is avoided, and the service life of the centrifugal compressor is prolonged.
Further, as shown in fig. 3-5, the following preferred technical solutions are provided:
a supporting seat 92 is fixedly connected in the damping hole 61, one side of the supporting seat 92 close to the air outlet end of the air outlet pipe 3 is fixedly connected with one end of a second spring 93, and the other end of the second spring 93 is fixedly connected with the ball 91.
Specifically, the orifice 61 can flow through during the gas backflow, gas can give and spheroid 91 pressure during flowing through orifice 61, spheroid 91 can enter into orifice 61 after receiving pressure, spheroid 91 is not more than spheroid 91 volume half when entering orifice 61, gas can circulate through orifice 61, the sectional area of flowing through of orifice 61 diminishes this moment, thereby the speed and the frequency of less gas backflow, spheroid 91 is greater than spheroid 91 volume half when entering orifice 61, gas does not circulate through orifice 61, avoid gas backflow this moment, change the gas flow through passageway size through spheroid 91, further avoid the surge phenomenon because gas backflow leads to.
Further, as shown in fig. 4 and 5, the following preferred technical solutions are provided:
the ball 91 does not enter the damping hole 61 in the initial state, when the ball 91 enters the damping hole 61 and is not more than half of the volume of the ball 91, the gas can flow through the damping hole 61, and when the ball 91 enters the damping hole 61 and is more than half of the volume of the ball 91, the gas does not flow through the damping hole 61.
Specifically, the size of a gas flowing channel is changed through the ball body 91, so that the surge phenomenon caused by gas backflow is further avoided, the performance of the compressor is prevented from being remarkably deteriorated, and the gas parameters are prevented from generating large-amplitude pulsation.
Further, as shown in fig. 1 and fig. 2, the following preferred technical solutions are provided:
Specifically, when 3 gas pressure increases in outlet duct, gas can flow through communicating pipe 4 for one, and gas can promote piston rod 73 this moment, makes communicating pipe 4 and No. two communicating pipe 5 link up when gas promotes piston rod 73 to make gas enter into intake pipe 2 through No. two communicating pipe 5, thereby reduce the pressure differential between outlet duct 3 and the intake pipe 2, avoid gas backflow, thereby further avoid the surge phenomenon because gas backflow leads to.
Further, as shown in fig. 1 and fig. 2, the following preferred technical solutions are provided:
fixed connection fixing base 8 on communicating pipe 4, fixedly connected with sleeve 71 on fixing base 8, the cover is established on sleeve 71 and is connected with loop bar 72, the one end of spring 75 of sleeve 71 inner wall bottom fixed connection, the one end of loop bar 72 is connected to the other end fixed connection of spring 75, and the other end of loop bar 72 passes through connecting rod 74 fixed connection piston rod 73.
Specifically, when gaseous promotion piston rod 73, the removal of piston rod 73 drives the removal of connecting rod 74, thereby drive the removal of loop bar 72, the removal of loop bar 72 makes spring 75 take place elastic deformation, when gaseous not promoting piston rod 73, spring 75 contracts, drive piston rod 73 and get back to initial position, backflow structure 7 makes in outlet duct 3 gaseous can not flow into intake pipe 2 under initial condition, when gaseous production backward flow, enter into intake pipe 2 through a communicating pipe 4 and No. two communicating pipes 5, avoid gaseous from the inside backward flow of centrifugal compressor, thereby further avoid taking place surge phenomenon.
Further, as shown in fig. 1 and fig. 2, the following preferred technical solutions are provided:
Specifically, the piston rod 73 makes the first communicating pipe 4 and the second communicating pipe 5 not to be communicated with each other in the initial state, so that the gas in the gas outlet pipe 3 is prevented from flowing into the gas inlet pipe 2, the normal operation of the centrifugal compressor is ensured, and the first communicating pipe 4 and the second communicating pipe 5 are communicated with each other when being pushed by the gas, thereby reducing the pressure difference between the gas inlet pipe 2 and the gas outlet pipe 3 and further avoiding the surge phenomenon.
To sum up: in order to avoid the backflow of the gas in the gas outlet pipe 3, the gas flows through the damping hole 61 when flowing back, the gas can supply pressure to the ball 91 when flowing through the damping hole 61, the ball 91 can enter the damping hole 61 after being pressurized, when the ball 91 enters the damping hole 61 and is not more than half of the volume of the ball 91, the gas can flow through the damping hole 61, the flowing cross section of the damping hole 61 is reduced, so that the speed and the frequency of the backflow of the gas are reduced, when the ball 91 enters the damping hole 61 and is more than half of the volume of the ball 91, the gas does not flow through the damping hole 61, at the moment, the backflow of the gas is avoided, when the gas pushes the piston rod 73, the movement of the piston rod 73 drives the connecting rod 74 to move, so as to drive the loop rod 72 to move, the loop rod 72 moves to elastically deform the first spring 75, when the gas does not push the piston rod 73, the first spring 75 retracts, so as to drive the piston rod 73 to return to the initial position, backflow structure 7 makes 3 interior gases of outlet duct in the initial condition can not flow in intake pipe 2, when gaseous production backward flow, enter into intake pipe 2 through a communicating pipe 4 and No. two communicating pipes 5, damping structure 9 can reduce gas reflux speed and frequency, make spheroid 91 when getting into damping hole 61 and being greater than spheroid 91 volume half at atmospheric pressure difference, stop the gas reflux, thereby avoid the surge phenomenon because of gas reflux leads to, avoid the performance of compressor to show to worsen, avoid gas parameter to produce large amplitude pulsation, avoid simultaneously because the centrifugal compressor increases because the noise that surge phenomenon arouses increases, increase centrifugal compressor's life.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The surge-proof structure of the centrifugal compressor in the design of the multi-effect evaporation process comprises a centrifugal compressor body (1), wherein the centrifugal compressor body (1) comprises an air inlet pipe (2) and an air outlet pipe (3), and is characterized in that a damping structure (9) is arranged on the centrifugal compressor body (1);
fixed mounting has damping net (6) in outlet duct (3), damping hole (61) have been seted up on damping net (6), damping structure (9) are including spheroid (91) that get into damping hole (61) when receiving gas reflux pressure, and the diameter size of a dimension of spheroid (91) is unanimous with damping hole (61) diameter size of a dimension, and fixedly connected with communicating pipe (4) on outlet duct (3), be equipped with backflow structure (7) that supply gas to flow back to intake pipe (2) on communicating pipe (4).
2. The multiple effect evaporation process design centrifugal compressor anti-surge structure of claim 1, characterized in that: the damping hole (61) is internally and fixedly connected with a supporting seat (92), one side of the supporting seat (92) close to the air outlet end of the air outlet pipe (3) is fixedly connected with one end of a second spring (93), and the other end of the second spring (93) is fixedly connected with a ball body (91).
3. The anti-surge structure of the centrifugal compressor in the design of the multi-effect evaporation process according to claim 2, wherein the ball (91) does not enter the damping hole (61) in the initial state, when the ball (91) enters the damping hole (61) and is not more than half of the volume of the ball (91), gas can circulate through the damping hole (61), and when the ball (91) enters the damping hole (61) and is not more than half of the volume of the ball (91), gas does not circulate through the damping hole (61).
4. The anti-surge structure of the centrifugal compressor in the multi-effect evaporation process design of claim 1, characterized in that: backflow structure (7) include No. two communicating pipes (5), No. two communicating pipes (5) fixed connection communicating pipe (4), backflow structure (7) include piston rod (73) that can be along an inner wall repetitive motion of communicating pipe (4).
5. The multiple effect evaporation process design centrifugal compressor anti-surge structure of claim 4, characterized in that: fixed connection fixing base (8) on communicating pipe (4), fixedly connected with sleeve (71) on fixing base (8), the cover is established and is connected with loop bar (72) on sleeve (71), the one end of a spring (75) of sleeve (71) inner wall bottom fixed connection, the one end of another end fixed connection loop bar (72) of a spring (75), the other end of loop bar (72) passes through connecting rod (74) fixed connection piston rod (73).
6. The multiple effect evaporation process design centrifugal compressor anti-surge structure of claim 5, characterized in that: and the first communicating pipe (4) and the second communicating pipe (5) are not communicated with each other when the piston rod (73) is in an initial state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220751221.2U CN216975354U (en) | 2022-04-02 | 2022-04-02 | Anti-surge structure of centrifugal compressor in multi-effect evaporation process design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220751221.2U CN216975354U (en) | 2022-04-02 | 2022-04-02 | Anti-surge structure of centrifugal compressor in multi-effect evaporation process design |
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| Publication Number | Publication Date |
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| CN216975354U true CN216975354U (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220751221.2U Active CN216975354U (en) | 2022-04-02 | 2022-04-02 | Anti-surge structure of centrifugal compressor in multi-effect evaporation process design |
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| CN (1) | CN216975354U (en) |
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- 2022-04-02 CN CN202220751221.2U patent/CN216975354U/en active Active
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