CN210787792U - Multi-stage straight-flow cyclone separator - Google Patents
Multi-stage straight-flow cyclone separator Download PDFInfo
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- CN210787792U CN210787792U CN201921741629.6U CN201921741629U CN210787792U CN 210787792 U CN210787792 U CN 210787792U CN 201921741629 U CN201921741629 U CN 201921741629U CN 210787792 U CN210787792 U CN 210787792U
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Abstract
The utility model discloses a multistage straight-flow cyclone, which comprises a housin, be provided with total air inlet and total gas outlet respectively at the casing both ends, be provided with the baffle in the casing, the baffle separates the casing inner chamber for the separation chamber of more than one end to end, every separation intracavity is provided with the intake pipe, the blast pipe, baffle and guide blade, still be provided with the toper cover between intake pipe and the blast pipe, the tail end of the directional intake pipe of point portion of toper cover, the head end of the directional blast pipe of bottom opening of toper cover, still be provided with the side seam on the lateral wall of intake pipe. Compared with the prior art, the utility model has the following advantages: the design idea of the traditional straight-flow cyclone separator is broken through, the multi-stage separation cavity is designed, the conical cover is designed in each stage of separation cavity to guide all the rotary gas sent by all the gas inlet pipes into the shell outside the gas inlet pipes, and the conical cover can effectively avoid the phenomenon of dust leakage; the scheme realizes multi-stage separation, and has high separation efficiency and low air resistance.
Description
Technical Field
The utility model relates to a liquefied gas edulcoration technical field especially relates to a multistage straight-flow cyclone.
Background
The natural gas long-distance pipeline needs to establish a booster station along the way, and realizes the long-distance transportation of the natural gas through the multistage compression of the compressor. The compressor is the heart transported by the natural gas pipeline, the safety and the reliability of the operation of the compressor are related to whether the unit can stably work for a long period, and once the unit breaks down due to sealing, the downstream gas supply is directly influenced.
In order to prevent or inhibit the leakage of these gases to the atmosphere along the rotary shaft end of the compressor, various shaft end sealing devices must be adopted so as to maintain the normal operation of the main machine of the compressor, reduce the consumption of materials and energy, prevent environmental pollution and protect the safety of equipment. The dry gas sealing system at the shaft end of the compressor is one of important technologies, but solid or liquid impurities in a long-distance natural gas transmission pipeline can cause damage to a dynamic ring and a static ring of a dry gas seal if entering the dry gas sealing system of the centrifugal compressor, so that a dry gas sealing filter element of a compressor unit of a gas station of the gas transmission pipeline is frequently replaced, the service life of the dry gas sealing filter element is shortened, the leakage rate of natural gas is increased, the compressor is stopped, the safe operation of the compressor unit is seriously influenced, and the damage is caused to precision equipment such as a downstream pressure regulator, a downstream flowmeter and the like. The gas quality can not meet the air inlet requirement of a dry gas sealing system of the compressor, and the safe operation of a compressor unit can not be ensured by the conventional dry gas sealing system.
For natural gas long-distance pipeline stations, a station compressor dry gas sealing gas source pretreatment system is generally provided with a primary gravity separator or a cyclone separator in front of a filtering separator, so that the burden of the filtering separator is reduced, the service life of dry gas sealing travel is prolonged, and the replacement frequency is reduced.
The dry gas sealing gas source has the characteristics of low flow speed and high pressure, and in order to reduce energy loss in the conveying process, the pressure loss in the purification process is required to be small, the impurity states are various, and the gas and solid states exist, so that the common circulating type cyclone separator cannot meet the requirements. The straight-flow cyclone separator is used as one of cyclone dust collectors, and has the advantages of small pressure loss because no rising internal vortex airflow exists in the dust collector in the design, low dust removal efficiency, and impurity removal, backflow of partial escaping gas from an impurity removal channel or direct feeding of the escaping gas without purification treatment into an exhaust channel, entrainment and back mixing.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a multistage straight-flow cyclone.
The utility model discloses a realize through following technical scheme: the utility model provides a multistage straight-flow cyclone, includes the casing, is provided with total air inlet and total gas outlet, its characterized in that respectively at casing both ends: a clapboard is arranged in the shell and divides the inner cavity of the shell into more than one separating cavity which is connected end to end, an air inlet pipe and an air outlet pipe are arranged in each separating cavity, flow guide body and guide vane, the head end of intake pipe is the air inlet, the tail end of blast pipe is the gas outlet, the flow guide body sets up and is close to air inlet department in the intake pipe and sets up, guide vane sets up in the guide vane lateral surface, the tail end of the directional intake pipe of head end of blast pipe, still be provided with the toper cover between intake pipe and the blast pipe, the toper cover is hollow circular cone, the tail end of the directional intake pipe of point portion of toper cover, the head end of the directional blast pipe of bottom opening of toper cover, the air inlet runs through casing lateral wall or baffle and stretches out outside this level separation chamber and be connected with the gas outlet or the total air inlet in last one-level separation chamber, the gas outlet runs through casing lateral wall or baffle and.
As a further improvement to the scheme, a sewage draining outlet is arranged at the bottom of each stage of separation cavity.
As a further improvement to the above, the head end of the exhaust pipe extends into the bottom opening of the conical cover.
As a further improvement of the scheme, the side seam is arranged on the side wall of the air inlet pipe, the side seam is arranged on the pipe wall of the air inlet pipe along the direction of a spiral line vertical to the moving direction of the airflow, more than one side seam is arranged, and the side seams are symmetrically arranged around the air inlet pipe.
As a further improvement to the above scheme, the side seam is arranged at the tail end of the air inlet pipe, the tip of the conical cover extends into the tail end of the air inlet pipe, and the top end of the tip of the conical cover does not exceed the position of one end, close to the air inlet, of the side seam.
As a further improvement to the scheme, a transition straight cylinder is further arranged at the opening at the bottom of the conical cover.
As a further improvement to the scheme, a wire mesh is further arranged between the inner wall of the transition straight cylinder and the outer wall of the exhaust pipe.
As a further improvement to the above scheme, the head end of the exhaust pipe is provided with an air inlet structure, the air inlet structure is composed of a conical cylinder section and a straight cylinder section, one end with the smaller inner diameter of the conical cylinder section is connected with the straight cylinder section, and one end with the larger inner diameter of the conical cylinder section is connected with the exhaust pipe main body.
As a further improvement to the above solution, the guide blades are helical blades or guide vane blades.
Compared with the prior art, the utility model has the following advantages: the scheme breaks through the design idea of the traditional straight-flow cyclone separator, and by designing a multi-stage separation cavity and designing a conical cover in each stage of separation cavity to guide all the rotary gas sent by all the gas inlet pipes into the shell around the gas inlet pipes, the rotary gas continuously rotates in the shell, so that impurities are decelerated through frictional collision with the inner walls of the gas inlet pipes, settled after decelerated through frictional collision with the inner walls of the shell, and then enter the gas outlet pipe in the opening at the bottom of the conical cover through baffling, and the separation effect of the impurities is effectively enhanced due to the fact that the inner diameters of the gas inlet pipes and the shell are different; meanwhile, due to the limitation of the length of the pipe, in the traditional straight-flow cyclone separator, some impurities moving close to the axis do not have to move to the periphery and directly enter the exhaust pipe, the conical cover shields the air inlet pipe and the exhaust pipe, so that the phenomenon is thoroughly avoided, the impurities moving on the axis can be forcibly pushed away from the axis after encountering the conical cover, and then are settled through air flow rotation centrifugal separation, so that the phenomenon of dust leakage is avoided; the design of the plurality of side seams can help to quickly discharge impurities and effectively reduce the pressure loss of the whole cyclone separator; through the design of many places, under the prerequisite that effectively reduces the wind speed, improved the separation efficiency of device.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
The utility model provides a multistage straight-flow cyclone, includes casing 1, is provided with total air inlet 11 and total gas outlet 12, its characterized in that respectively at casing 1 both ends: a partition plate 2 is arranged in a shell 1, the partition plate 2 divides the inner cavity of the shell 1 into more than one separating cavity 3 connected end to end, each separating cavity 3 is internally provided with an air inlet pipe 4, an air outlet pipe 5, a flow guide body 7 and a guide blade 71, the head end of the air inlet pipe 4 is an air inlet 41, the tail end of the air outlet pipe 5 is an air outlet 51, the flow guide body 7 is arranged in the air inlet pipe 4 and close to the air inlet 41, the guide blade 71 is arranged on the outer side surface of the guide blade 71, the head end of the air outlet pipe 5 points to the tail end of the air inlet pipe 4, a conical cover 6 is also arranged between the air inlet pipe 4 and the air outlet pipe 5, the conical cover 6 is in a hollow conical shape, the tip of the conical cover 6 points to the tail end of the air inlet pipe 4, the bottom opening of the conical cover 6 points to the head, the air outlet 51 extends out of the separation chamber 3 of the next stage through the side wall or partition 2 of the casing 1 and is connected with the air inlet 41 or the general air outlet 12 of the separation chamber 3 of the next stage. The direct current is cyclone because of its low air resistance's characteristics, receives more and more attention in the industry, but its efficiency can not obtain big promotion all the time, and its reason has current straight-flow cyclone to utilize the air current rotatory impurity in making the air current centrifugation to the periphery, takes the gas of central part to carry to next process, discharges the impurity of peripheral part together with gas, has caused a large amount of target gas's loss like this, and the gas of combustion needs to get into the separation system again and need to flow back through the passageway of arranging the impurity, causes to smuggle and back-mixes. The scheme breaks through the design idea of the traditional straight-flow cyclone separator, and by designing the multi-stage separation chambers 3 and designing the conical cover 6 in each stage of separation chamber 3 to guide all the rotary gas sent by the gas inlet pipe 4 into the shell 1 around the gas inlet pipe 4, the rotary gas continuously rotates in the shell 1, so that impurities are decelerated through frictional collision with the inner wall of the gas inlet pipe 4, then settled after decelerated through frictional collision with the inner wall of the shell 1, and then enter the exhaust pipe 5 in the opening at the bottom of the conical cover 6 through baffling, and the separation effect of the impurities is effectively enhanced due to the fact that the inner diameters of the gas inlet pipe 4 and the shell 1 are different; simultaneously, because the restriction of the pipe length, some impurity that are close to the axis motion have not come to move to the periphery in traditional straight-flow cyclone and just directly entered into blast pipe 5, this scheme is because toper cover 6 shelters from between intake pipe 4 and blast pipe 5 for this phenomenon is thoroughly avoided, and the impurity of motion on the axis can be forced to push away and keep away from the axle center after meetting toper cover 6, subsides through the rotatory centrifugal separation of air current again, avoids the phenomenon of "leaking the ash".
A drain outlet 31 is provided at the bottom of each stage of the separation chamber 3.
The head end of the exhaust pipe 5 protrudes into the bottom opening of the conical cover 6. Because the air current is in the rotation state all the time in whole device, stretch into the bottom opening of conical cover 6 with the head end of blast pipe 5 in can let gas entering blast pipe 5 before through the centrifugal separation of one section conical surface inner wall again, so form multi-stage separation, make gas through many times separation effect, improve separation efficiency.
The side wall of the air inlet pipe 4 is provided with side seams 42, the side seams 42 are arranged on the pipe wall of the air inlet pipe 4 along a spiral line direction perpendicular to the air flow moving direction, more than one side seam 42 is arranged, and the more than one side seam 42 is symmetrically arranged around the air inlet pipe 4. The design of the side seams 42 can help to quickly discharge impurities moving along the pipe wall in the air inlet pipe 4, and more importantly, the escape passage of the air in the air inlet pipe 4 is increased, and simultaneously enough wall surfaces are kept for collision and deceleration of the impurities, so that the pressure loss of the whole cyclone separator can be reduced.
The side seam 42 is arranged at the tail end of the air inlet pipe 4, the tip part of the conical cover 6 extends into the tail end of the air inlet pipe 4, and the top end position of the tip part of the conical cover 6 does not exceed the position of one end, close to the air inlet 41, of the side seam 42. The point portion of conical cover 6 stretches into intake pipe 4 and can make whole device design compacter, form the annular space between the lateral wall of conical cover 6 and the 4 tail ends of intake pipe, conical cover 6 has occupied 41 tail end centers "invalid" region of air inlet like this, force the air current to peripheral motion, impurity in making the air current through the annular space obtains effective separation, conical cover 6 point portion and the design of side seam 42 position overlapping, can effectively reduce because of conical cover 6 stretches into the air-resistor that intake pipe 4 brought, and more gas can promote the impurity of the separation on the 4 inner walls of intake pipe to discharge fast when flowing out by side seam 42.
A transition straight cylinder 61 is also arranged at the bottom opening of the conical cover 6. The design of the transition straight cylinder 61 can effectively reduce the pressure drop when the airflow passes through the outer side of the conical cover 6.
Still be provided with wire mesh 8 between the straight section of thick bamboo 61 inner wall of transition and the blast pipe 5 outer wall, wire mesh 8 can prevent effectively that the liquid drop from getting into in the blast pipe 5.
The head end of the exhaust pipe 5 is provided with an air inlet structure, the air inlet structure is composed of a conical cylinder section 52 and a straight cylinder section 53, one end of the conical cylinder section 52 with the smaller inner diameter is connected with the straight cylinder section 53, and one end of the conical cylinder section 52 with the larger inner diameter is connected with the exhaust pipe 5 main body. The design of the air inlet structure can give consideration to both the separation efficiency and the pressure drop loss.
The guide blades 71 are helical blades or guide vane blades.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a multistage straight-flow cyclone, includes the casing, is provided with total air inlet and total gas outlet, its characterized in that respectively at casing both ends: be provided with the baffle in the casing, the baffle separates the casing inner chamber for more than one end to end's disengagement chamber, every the disengagement chamber is provided with intake pipe, blast pipe, baffle and guide vane, the head end of intake pipe is the air inlet, the tail end of blast pipe is the gas outlet, the baffle sets up and sets up near air inlet department in the intake pipe, guide vane sets up in the guide vane lateral surface, the tail end of the directional intake pipe of head end of blast pipe, still be provided with the toper cover between intake pipe and the blast pipe, the toper cover is hollow circular cone form, and the tail end of the directional intake pipe of point portion of toper cover, and the bottom opening of toper cover is directional the head end of blast pipe, the air inlet runs through casing lateral wall or baffle and stretches out outside this level disengagement chamber and be connected with the gas outlet or the total air inlet in last level disengagement chamber, the gas outlet runs through casing lateral wall or baffle and stretches The air outlets are connected.
2. A multi-stage straight-flow cyclone separator according to claim 1, characterized in that: and a sewage draining outlet is arranged at the bottom of each separation cavity.
3. A multi-stage straight-flow cyclone separator according to claim 1, characterized in that: the head end of the exhaust pipe extends into the bottom opening of the conical cover.
4. A multi-stage straight-flow cyclone separator according to claim 1, characterized in that: the side wall of the air inlet pipe is provided with side seams, the side seams are arranged on the pipe wall of the air inlet pipe along a spiral line direction perpendicular to the air flow movement direction, more than one side seam is arranged, and the side seams are symmetrically arranged around the air inlet pipe.
5. The multi-stage once-through cyclone separator according to claim 4, wherein: the side seam sets up in the tail end of intake pipe, the point portion of toper cover stretches into the tail end of intake pipe, and the point portion top position of toper cover does not exceed the position that the side seam is close to air inlet one end.
6. A multi-stage straight-flow cyclone separator according to claim 1, characterized in that: a transition straight cylinder is also arranged at the opening at the bottom of the conical cover.
7. The multi-stage once-through cyclone separator according to claim 6, wherein: and a wire mesh is also arranged between the inner wall of the transition straight cylinder and the outer wall of the exhaust pipe.
8. A multi-stage straight-flow cyclone separator according to claim 1, characterized in that: the head end of the exhaust pipe is provided with an air inlet structure, the air inlet structure is composed of a conical cylinder section and a straight cylinder section, one end with the smaller inner diameter of the conical cylinder section is connected with the straight cylinder section, and one end with the larger inner diameter of the conical cylinder section is connected with the exhaust pipe main body.
9. A multi-stage straight-flow cyclone separator according to claim 1, characterized in that: the guide blades are helical blades or guide vane blades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921741629.6U CN210787792U (en) | 2019-10-17 | 2019-10-17 | Multi-stage straight-flow cyclone separator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921741629.6U CN210787792U (en) | 2019-10-17 | 2019-10-17 | Multi-stage straight-flow cyclone separator |
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| Publication Number | Publication Date |
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| CN210787792U true CN210787792U (en) | 2020-06-19 |
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| CN201921741629.6U Active CN210787792U (en) | 2019-10-17 | 2019-10-17 | Multi-stage straight-flow cyclone separator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586349A (en) * | 2019-10-17 | 2019-12-20 | 湖北伯莱盾气体设备有限公司 | Multi-stage straight-flow cyclone separator |
| CN113769904A (en) * | 2021-09-09 | 2021-12-10 | 中国石油大学(北京) | DC cyclone separator with retractable centerbody and variable blade exit angle |
-
2019
- 2019-10-17 CN CN201921741629.6U patent/CN210787792U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586349A (en) * | 2019-10-17 | 2019-12-20 | 湖北伯莱盾气体设备有限公司 | Multi-stage straight-flow cyclone separator |
| CN113769904A (en) * | 2021-09-09 | 2021-12-10 | 中国石油大学(北京) | DC cyclone separator with retractable centerbody and variable blade exit angle |
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