CN115095555B - Pressure regulating assembly and pressure matcher - Google Patents
Pressure regulating assembly and pressure matcher Download PDFInfo
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- CN115095555B CN115095555B CN202210880696.6A CN202210880696A CN115095555B CN 115095555 B CN115095555 B CN 115095555B CN 202210880696 A CN202210880696 A CN 202210880696A CN 115095555 B CN115095555 B CN 115095555B
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 42
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims description 35
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010793 Steam injection (oil industry) Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 238000010795 Steam Flooding Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
- F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/48—Control
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a pressure regulating assembly and a pressure matcher. The pressure regulating assembly comprises a first pipeline, a first impeller, a second pipeline and a second impeller, wherein the first pipeline is provided with a first runner, the first runner is provided with a first inlet and a first outlet, the first impeller is arranged in the first runner, the first impeller is positioned at the upstream of the first outlet, the second pipeline is provided with a second runner, the second runner is provided with a second inlet and a second outlet, the second impeller is arranged in the second runner, the second impeller is in transmission connection with the first impeller, and the second impeller is positioned at the upstream of the second outlet. The pressure regulating assembly regulates the pressure of the two low-pressure steam, so that the interference of the two low-pressure steam during mixing is reduced, the mixing and flowing are more stable, the loss caused by the two low-pressure steam during mixing is further reduced, and the pressure of the mixed low-pressure steam is improved.
Description
Technical Field
The invention relates to the technical field of thermal power generation and steam pressure regulation, in particular to a pressure regulating assembly and a pressure matcher.
Background
The steam hot press is also called as a pressure matcher, is an efficient steam utilization device and is widely applied to various electric power and industrial fields. The current conventional working principle is that high-pressure driving steam is used as a power source, low-pressure steam is pumped in by utilizing negative pressure formed during high-pressure steam injection, and medium-pressure steam is formed after the high-pressure steam and the low-pressure steam are mixed, so that the purpose of pressurizing the low-pressure steam is achieved.
However, a great deal of increase in steam pressure requires an increase in steam temperature and steam flow rate, and in practical applications, there may be more than one inlet pipe, and the steam pressures in different pipes may also be different, so that these gases may interfere with each other when mixed before the inlet, and have negative effects on the steam pressure and flow stability of the inlet.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, embodiments of the present invention provide a pressure regulating assembly that reduces the interference loss of two low pressure vapors when mixed.
The embodiment of the invention also provides a pressure matcher.
The voltage regulating assembly of the embodiment of the invention comprises:
A first conduit having a first flow passage with a first inlet and a first outlet, the first flow passage having a cross-sectional outer contour that is circular;
The first impeller is arranged in the first flow channel and is positioned upstream of the first outlet;
a second conduit having a second flow passage with a second inlet and a second outlet, the second flow passage having a cross-sectional outer contour that is circular; and
The second impeller is arranged in the second flow channel and is in transmission connection with the first impeller, and the second impeller is positioned at the upstream of the second outlet.
The pressure regulating assembly provided by the embodiment of the invention regulates the pressure of the two low-pressure steam, so that the interference of the two low-pressure steam during mixing is reduced, the mixing and flowing are more stable, the loss caused by the two low-pressure steam during mixing is further reduced, and the pressure of the mixed low-pressure steam is further improved.
In some embodiments, the first flow channel communicates with the second flow channel, and each of the first impeller and the second impeller is located upstream of a location of communication of the first flow channel with the second flow channel.
In some embodiments, the second outlet is located upstream of the first outlet, the first outlet being for communication with a low pressure inlet of a pressure matcher.
In some embodiments, the first and second conduits extend in parallel;
the pressure regulating assembly further comprises a first communication pipe, one end of the first communication pipe is connected with the first pipeline, the other end of the first communication pipe is connected with the second outlet, the first communication pipe is provided with a third flow passage, and the third flow passage is communicated with the first flow passage and the second flow passage.
In some embodiments, the angle between the third flow channel and the second flow channel is an angle alpha, 90 degrees less than or equal to alpha < 180 degrees; the included angle between the third flow channel and the first flow channel is an angle beta which is more than 0 degrees and less than or equal to 90 degrees, and the angle alpha and the angle beta are positioned on the same side of the third flow channel in the radial direction.
In some embodiments, the ratio of the first impeller to the second impeller ranges from 1 to 4;
The pressure regulating assembly further comprises a connecting rotating shaft, the connecting rotating shaft is arranged in the third flow channel, one end of the connecting rotating shaft is in transmission connection with the first impeller, and the other end of the connecting rotating shaft is in transmission connection with the second impeller.
In some embodiments, the voltage regulating assembly further comprises:
the second communicating pipe is provided with a fourth flow passage, the fourth flow passage is provided with a fourth inlet and a fourth outlet, and the fourth inlet is connected with the first outlet; and
The third communicating pipe is provided with a fifth flow passage, the fifth flow passage is provided with a fifth inlet and a fifth outlet, the fifth inlet is connected with the second outlet, and the fourth outlet is connected with the fifth outlet through a three-way joint so as to be connected with the low-pressure inlet of the pressure matcher through the three-way joint.
The pressure matcher of the embodiment of the invention comprises:
the pressure matcher body is provided with a low-pressure inlet;
the pressure regulating assembly is the pressure regulating assembly, and the first outlet and/or the second outlet are/is communicated with the low-pressure inlet.
The pressure matcher reduces the interference consumption of different low-pressure steam during mixing, and improves the pressure of the low-pressure steam of the pressure matcher body. Compared with other pressurizing means in the related art, the pressure matcher provided by the embodiment of the invention does not increase extra energy and cost consumption, does not need to add electronic or mechanical control equipment, and is simpler in structure, low in cost and wide in adaptability.
In some embodiments, the pressure matcher body includes:
A main pipe having a sixth flow passage extending in a preset direction, the sixth flow passage having a sixth inlet and a sixth outlet, the sixth inlet constituting the low pressure inlet; and
The high-pressure pipeline is provided with a seventh flow passage, the seventh flow passage is provided with a seventh inlet and a seventh outlet, at least one part of the high-pressure pipeline stretches into the main pipeline so that the seventh outlet is positioned in a sixth flow passage, the seventh flow passage is communicated with the sixth flow passage, and the seventh outlet faces the sixth outlet along the preset direction.
In some embodiments, the sixth flow passage includes a necking chamber located upstream of the seventh inlet, the necking chamber being adjacent to the sixth inlet in the preset direction.
Drawings
FIG. 1 is a schematic diagram of a pressure matcher according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the steam pressure distribution of the pressure matcher according to an embodiment of the present invention;
FIG. 3 is a schematic distribution diagram of a first conduit and a plurality of second conduits according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a pressure matcher according to another embodiment of the present invention.
Reference numerals:
a pressure matcher 1000;
a pressure regulating assembly 100; a pressure matcher body 200;
A first conduit 1, a first flow passage 11, a first inlet 111, a first outlet 112;
a first impeller 2;
the second conduit 3, the second flow channel 31, the second inlet 311, the second outlet 312,
A second impeller 4;
A first communication pipe 5, a third flow passage 51;
The connecting rotating shaft 6;
a main pipe 7, a sixth runner 71, a sixth inlet 711, a sixth outlet 712, and a constriction cavity 713;
high pressure conduit 8, seventh flow passage 81, seventh inlet 811, seventh outlet 812;
a second communication pipe 9, a fourth flow passage 91, a fourth inlet 911, and a fourth outlet 912;
A third communication pipe 10, a fifth flow path 101, a fifth inlet 1011, and a fifth outlet 1012.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
As shown in fig. 1 to 4, the pressure matcher 1000 according to an embodiment of the present invention includes a pressure matcher body 200 and a pressure regulating assembly 100. The pressure matcher body 200 has a low pressure inlet.
The pressure regulating assembly 100 comprises a first conduit 1, a first impeller 2, a second conduit 3 and a second impeller 4. The first conduit 1 has a first flow channel 11, the first flow channel 11 having a first inlet 111 and a first outlet 112, the outer contour of the cross section of the first flow channel 1 being circular. The first impeller 2 is arranged in the first flow channel 11, the first impeller 2 being located upstream of the first outlet 112. The second duct 3 has a second flow channel 31, the second flow channel 31 having a second inlet 311 and a second outlet 312, the outer contour of the cross section of the second flow channel 3 being circular. The second impeller 4 is arranged in the second flow channel 31, the second impeller 4 is in driving connection with the first impeller 2, and the second impeller 4 is located upstream of the second outlet 312. The first outlet 112 and/or the second outlet 312 communicate with the low pressure inlet.
Before the pressure matcher 1000 of the embodiment of the present invention is used, a first low-pressure steam is delivered into the first pipeline 1, a second low-pressure steam is delivered into the second pipeline 3, and the pressures of the first low-pressure steam and the second low-pressure steam are different. For convenience of distinguishing and description, the low-pressure steam input into the first pipeline 1 is first low-pressure steam, the pressure of the first low-pressure steam is recorded as P1, the low-pressure steam input into the second pipeline 3 is second low-pressure steam, and the pressure of the second low-pressure steam is recorded as P2, and P1 is not equal to P2.
When the pressure matcher body 200 is used, the pressure matcher body 200 utilizes high-pressure steam injection to form negative pressure, the negative pressure forms suction force on low-pressure steam, so that the low-pressure steam flows in the direction of the negative pressure through the low-pressure port, and then the high-pressure steam drives the low-pressure steam flow to be mixed into medium-pressure steam in a downstream diffuser, so that the pressurization on the low-pressure steam is realized.
Under the action of the suction force, in the process that the first low-pressure steam and the second low-pressure steam flow towards the negative pressure direction, if the first impeller 2 and the second impeller 4 are not in transmission connection, the first low-pressure steam flows in the first flow channel 11 to drive the first impeller 2 to rotate, and the second low-pressure steam flows in the second flow channel 31 to drive the second impeller 4 to rotate, and as P1.noteq.P2, the rotation speed of the first impeller 2 is different from the rotation speed of the second impeller 4.
If P1 is greater than P2, the rotation speed of the first impeller 2 is greater than the rotation speed of the second impeller 4, and because the first impeller 2 and the second impeller 4 of the pressure regulating assembly 100 of the embodiment of the present invention are in transmission connection, the first impeller 2 with a high rotation speed drives the second impeller 4 with a low rotation speed to accelerate rotation, so that the rotation speed of the second impeller 4 is relatively increased, and the increase of the rotation speed of the second impeller 4 promotes the flow rate and pressure of the second low pressure steam, thereby realizing the pressurization of the second low pressure steam. While the first impeller 2 in the first flow channel 11 consumes a part of the kinetic energy of the first low pressure steam, thereby reducing the flow rate and pressure of the first low pressure steam. The first low pressure steam after passing through the first impeller 2 and the second low pressure steam after passing through the second impeller 4 are mixed to form mixed low pressure steam, the pressure of which is denoted as P3.
That is, the pressure of the first low pressure steam passing through the first impeller 2 is reduced, the pressure of the second low pressure steam passing through the second impeller 4 is increased, the pressure is P2', and the pressure difference between the first low pressure steam and the second low pressure steam is reduced, so that when the first low pressure steam and the second low pressure steam are mixed, the interference caused by the pressure difference is reduced, the mixing and the flow between the first low pressure steam and the second low pressure steam are more stable, the pressure loss caused by the interference is effectively reduced, the pressure of the mixed first low pressure steam and the pressure of the mixed low pressure steam are higher than the numerical value under the condition that the first impeller 2 and the second impeller 4 are not in transmission connection, and the pressure of the medium pressure steam formed by mixing the mixed low pressure steam and the high pressure steam is increased.
According to the pressure regulating assembly 100 disclosed by the embodiment of the invention, the first impeller 2 is arranged in the first flow channel 11, the second impeller 4 is arranged in the second flow channel 31, the first impeller 2 is driven to rotate by the first low-pressure steam, the second impeller 4 is driven to rotate by the second low-pressure steam, the kinetic energy of the first low-pressure steam is consumed by the rotation of the first impeller 2 under higher steam pressure so as to reduce the steam pressure by utilizing the difference of the pressure of the two low-pressure steam and the transmission connection between the first impeller 2 and the second impeller 4, the kinetic energy of the second low-pressure steam is increased by the rotation of the second impeller 4 under lower steam pressure so as to improve the steam pressure, and therefore, the pressure regulating assembly 100 regulates the pressure of the first steam and the pressure of the second steam is formed, the interference of the two low-pressure steam during mixing is reduced, the mixing and the flow are more stable, the loss caused by the low-pressure steam during the mixing process is reduced, and the pressure of the mixed low-pressure steam is improved.
The pressure regulating assembly 100 and the pressure matcher 1000 of the embodiment of the invention reduce the interference consumption of different low-pressure steam during mixing, and improve the pressure of the low-pressure steam input into the pressure matcher body 200. In addition, compared with other pressurizing means in the related art, the pressure regulating assembly 100 and the pressure matcher 1000 of the embodiment of the invention do not increase extra energy and cost consumption, and meanwhile, do not need to add electronic or mechanical control equipment, and have the advantages of simpler structure, low cost and wide adaptability.
In order to make the solution of the present invention easier to understand, a detailed description will be given by taking fig. 1 to 3 as an example. In fig. 1, the front-rear direction is the same as the preset direction. The pressure matcher 1000 of the embodiment of the present invention includes a pressure matcher body 200 and a pressure regulating assembly 100.
The pressure matcher body 200 has a low pressure inlet, and the pressure matcher body 200 includes a main pipe 7 and a high pressure pipe 8. The main pipe 7 has a sixth flow passage 71, the sixth flow passage 71 extending in a preset direction, the sixth flow passage 71 having a sixth inlet 711 and a sixth outlet 712, the sixth inlet 711 constituting the low pressure inlet. The high-pressure pipe 8 has a seventh flow passage 81, the seventh flow passage 81 having a seventh inlet 811 and a seventh outlet 812, at least a portion of the high-pressure pipe 8 extending into the main pipe 7 such that the seventh outlet 812 is located in the sixth flow passage 71, the seventh flow passage 81 communicating with the sixth flow passage 71, the seventh outlet 812 being directed in a preset direction toward the sixth outlet 712. The seventh outlet 812 forms a jet direction of high pressure steam, the sixth inlet 711 forms a flow direction of low pressure steam, the seventh outlet 812 and the sixth outlet 712 form a flow path of medium pressure steam, the flow direction of the low pressure steam is the same as the jet direction of the high pressure steam, smooth flow and mixing of the low pressure steam and the high pressure steam are facilitated, interference and consumption caused by steering of the low pressure steam during mixing are reduced or avoided, and pressure of the mixed medium pressure steam is further improved. The low pressure steam referred to herein is the aforementioned mixed low pressure steam.
Before the pressure matcher 1000 of the embodiment of the present invention is used, high-pressure steam is delivered into the high-pressure pipeline 8, and the pressure of the high-pressure steam is recorded as P4. In use, the pressure matching unit 1000 according to the embodiment of the present invention causes high-pressure steam to be ejected from the seventh outlet 812 and flow in the direction of the sixth outlet 712, and the high-speed ejection of the high-pressure steam forms an ejection column and the negative pressure is formed around the ejection column, and the negative pressure is denoted as P0. Since P1 is greater than P0 and P2 is greater than P0, suction forces are created for the first low pressure steam and the second low pressure steam due to the pressure differential, causing the first low pressure steam and the second low pressure steam to flow through the low pressure inlet in a direction toward the negative pressure.
The pressure regulating assembly 100 of the embodiment of the present invention includes a first pipe 1, a first impeller 2, a second pipe 3, and a second impeller 4. The first conduit 1 has a first flow channel 11, the first flow channel 11 having a first inlet 111 and a first outlet 112, the outer contour of the cross section of the first flow channel 1 being circular. The first impeller 2 is arranged in the first flow channel 11, the first impeller 2 being located upstream of the first outlet 112. The second duct 3 has a second flow channel 31, the second flow channel 31 having a second inlet 311 and a second outlet 312, the outer contour of the cross section of the second flow channel 3 being circular. The second impeller 4 is arranged in the second flow channel 31, the second impeller 4 is in driving connection with the first impeller 2, and the second impeller 4 is located upstream of the second outlet 312.
Under the action of suction force, the first low-pressure steam flows from the first inlet 111 to the first outlet 112 in the first flow channel 11, the second low-pressure steam flows from the second inlet 311 to the second outlet 312 in the second flow channel 31, and if P1 is larger than P2, the first impeller 2 transmits rotary motion to the second impeller 4 under the transmission connection relation of the first impeller 2 and the second impeller 4, so that the rotating speed of the second impeller 4 is relatively increased, and the increase of the rotating speed of the second impeller 4 improves the flow speed and the steam pressure of the second low-pressure steam, thereby realizing the pressurization of the second low-pressure steam. While the first impeller 2 in the first flow channel 11 consumes a part of the kinetic energy of the first low pressure steam, thereby reducing the flow rate and pressure of the first low pressure steam. Thereby realizing pressure regulation of the first low-pressure steam and the second low-pressure steam.
Further, the ratio of the first impeller 2 to the second impeller 4 is in the range of 1-4. The transmission ratio of the first impeller 2 to the second impeller 4 is in the range, so that the first impeller 2 can be driven to rotate by using a part of kinetic energy consumed by the first low-pressure steam, and the pressure of the second low-pressure steam is increased, so that the flow speed and the pressure between the first low-pressure steam and the second low-pressure steam are more approximate, and the mixing of the first low-pressure steam and the second low-pressure steam is more stable.
In particular, the transmission ratio of the first impeller 2 to the second impeller 4 may be 1, 2,3 or 4. In the embodiment of the invention, the transmission ratio of the first impeller 2 to the second impeller 4 is 1.
The first flow passage 11 of the pressure regulating assembly 100 of the embodiment of the present invention communicates with the second flow passage 31, and each of the first impeller 2 and the second impeller 4 is located upstream of the communication position of the first flow passage 11 with the second flow passage 31. The communication between the first flow passage 11 and the second flow passage 31 enables the pressure-regulated first low-pressure steam and the pressure-regulated second low-pressure steam to start to be mixed in the pressure regulating assembly 100 and to be fully mixed in the process of flowing to the main pipeline 7, so that the uniformity of mixing the pressure-regulated first low-pressure steam and the pressure-regulated second low-pressure steam is ensured, the disturbance generated when the mixed low-pressure steam and the high-pressure steam are mixed is further reduced, and the pressure of the medium-pressure steam is further improved.
In some embodiments, the second outlet 312 is located upstream of the first outlet 112, the first outlet 112 communicating with the low pressure inlet of the pressure matcher body 200. The second low-pressure steam after pressure regulation enters the first flow passage 11 from the second outlet 312, is mixed with the first low-pressure steam after pressure regulation to form mixed low-pressure steam, and flows in the direction of the negative pressure through the low-pressure inlet. The connection and installation mode of the first pipeline 1 and the main pipeline 7 are simple and convenient due to the communication of the first outlet 112 and the low-pressure inlet, and the manufacturing difficulty and the cost are low.
Specifically, referring to fig. 1, the first outlet 112 of the first pipe 1 is detachably connected to the sixth inlet 711 of the main pipe 7 by a flange.
In some embodiments, the direction of extension of the first duct 1 and the second duct 3 is parallel. The pressure regulating assembly 100 further comprises a first communication pipe 5, one end of the first communication pipe 5 is connected with the first pipeline 1, the other end of the first communication pipe 5 is connected with the second outlet 312, the first communication pipe 5 is provided with a third flow passage 51, and the third flow passage 51 is communicated with the first flow passage 11 and the second flow passage 31. The extending directions of the first pipeline 1 and the second pipeline 3 are parallel, so that the pressure regulating assembly 100 is simple to manufacture, the structural layout of the pressure regulating assembly 100 and the pressure matcher body 200 is facilitated, and the installation space is saved.
Specifically, referring to fig. 1, the extending direction of the first duct 1 and the second duct 3 is the front-rear direction.
In some embodiments, the angle between the third flow channel 51 and the second flow channel 31 is an angle α, 90+.α < 180 °; the included angle between the third flow channel 51 and the first flow channel 11 is the angle beta, 0 degrees is less than or equal to 90 degrees, the angle alpha and the angle beta are positioned on the same side of the third flow channel 51 in the radial direction, namely, the included angle between the flowing direction of the second low-pressure steam after pressure regulation to the first flow channel 11 and the flowing direction of the first low-pressure steam after pressure regulation is less than or equal to 90 degrees, so that the air flow disturbance formed by the two low-pressure steam during mixing can be further reduced, the loss during mixing is further reduced, and the pressure of the mixed low-pressure steam after the two low-pressure steam is further improved, so that the pressure of the medium-pressure steam is further improved.
Specifically, the angle α may be 90 °, 135 ° or 160 °, and the angle β may be 90 °, 45 ° or 30 °.
In the embodiment shown in fig. 2, the angle α is 90 ° and the angle β is 90 °.
The pressure regulating assembly 100 of the embodiment of the invention further comprises a connecting rotating shaft 6, wherein the connecting rotating shaft 6 is arranged in the third flow passage 51, one end of the connecting rotating shaft 6 is in transmission connection with the first impeller 2, and the other end of the connecting rotating shaft 6 is in transmission connection with the second impeller 4. The connection rotating shaft 6 is arranged in the third flow passage 51, so that the connection rotating shaft 6 is convenient to install, and meanwhile, the first communication pipe 5 also forms protection for the connection rotating shaft 6, so that adverse effects of external environments on the first impeller 2, the second impeller 4 and the connection rotating shaft 6 are reduced.
In other embodiments, the connecting shaft 6 may be disposed at other positions than in the third flow passage 51, as long as the transmission between the first impeller 2 and the second impeller 4 is achieved.
In addition, in order to perform the pressurization treatment on the multiple low-pressure steam by using the pressure matcher 1000 according to the embodiment of the present invention, a plurality of second pipelines 3 may be provided, where a second impeller 4 is disposed in the second flow channel 31 of each second pipeline 3, each second impeller 4 is in driving connection with the first impeller 2, and each second pipeline 3 may be communicated with the first pipeline 1 through the first communication pipe 5 as described above. A plurality of second pipes 3 may be laid around the first pipe 1 as shown in fig. 3.
In other embodiments, referring to fig. 4, pressure regulating assembly 100 further includes second communication tube 9 and third communication tube 10. The second communication pipe 9 has a fourth flow path 91, the fourth flow path 91 having a fourth inlet 911 and a fourth outlet 912, the fourth inlet 911 being connected to the first outlet 112. The third communication pipe 10 has a fifth flow path 101, the fifth flow path 101 has a fifth inlet 1011 and a fifth outlet 1012, the fifth inlet 1011 is connected to the second outlet 312, and the fourth outlet 912 is connected to the fifth outlet 1012 by a three-way joint to connect the low pressure inlet of the pressure matcher body 200 through the three-way joint. The first low-pressure steam passing through the first impeller 2 flows through the first outlet 112 and the fourth runner 91 to the three-way joint, the second low-pressure steam passing through the second impeller 4 flows through the second outlet 312 and the fifth runner 101 to the three-way joint, and the two low-pressure steam flows to the low-pressure inlet (namely, the sixth inlet 711) after being intersected and mixed by the three-way joint to enter the main pipeline 7.
The pressure regulating assembly 100, by arranging the second communicating pipe 9 and the third communicating pipe 10 and communicating the second communicating pipe 9, the third communicating pipe 10 and the main pipe 7 by using the three-way joint, makes the layout of the first pipeline 1 and the second pipeline 3 less limited by factors such as length, diameter, distance between the two, inclination angle and the like, and makes the layout and arrangement of the first pipeline 1 and the second pipeline 3 more flexible, thereby making the application scenario of the pressure matcher 1000 of the embodiment of the invention wider.
In some embodiments, sixth flow passage 71 includes a constriction chamber 713, constriction chamber 713 being located upstream of seventh inlet 811, constriction chamber 713 being adjacent to sixth inlet 711 in the predetermined direction. The mixed low pressure steam enters the necking chamber 713 from the fourth inlet 711, flows along the sixth flow passage 71 of the main pipe 7 in the negative pressure direction and enters the downstream diffuser under the drive of the high pressure steam. The diameter of the necking cavity 713 is gradually reduced towards the seventh outlet 812 to guide the mixed low-pressure steam entering the sixth flow channel 71, so that disordered flow of the mixed low-pressure steam in the sixth flow channel 71 is avoided, the mixed low-pressure steam smoothly flows to the negative pressure, interference and consumption during mixing of the mixed low-pressure steam and the high-pressure steam are further reduced, and the pressure of the medium-pressure steam is further improved.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (6)
1. A pressure regulating assembly, comprising:
-a first conduit (1), the first conduit (1) having a first flow channel (11), the first flow channel (11) having a first inlet (111) and a first outlet (112), the outer contour of the cross section of the first flow channel (1) being circular;
A first impeller (2), the first impeller (2) being arranged in the first flow channel (11), the first impeller (2) being located upstream of the first outlet (112);
-a second conduit (3), the second conduit (3) having a second flow channel (31), the second flow channel (31) having a second inlet (311) and a second outlet (312), the outer contour of the cross section of the second flow channel (3) being circular; and
The second impeller (4) is arranged in the second flow channel (31), the second impeller (4) is in transmission connection with the first impeller (2), and the second impeller (4) is positioned at the upstream of the second outlet (312);
-the first flow channel (11) communicates with the second flow channel (31), each of the first impeller (2) and the second impeller (4) being located upstream of the communication position of the first flow channel (11) with the second flow channel (31);
The second outlet (312) is located upstream of the first outlet (112), the first outlet (112) being for communicating with a low pressure inlet of a pressure matcher;
the extending directions of the first pipeline (1) and the second pipeline (3) are parallel;
The pressure regulating assembly further comprises a first communication pipe (5), one end of the first communication pipe (5) is connected with the first pipeline (1), the other end of the first communication pipe (5) is connected with the second outlet (312), the first communication pipe (5) is provided with a third flow passage (51), and the third flow passage (51) is communicated with the first flow passage (11) and the second flow passage (31);
The transmission ratio of the first impeller (2) to the second impeller (4) ranges from 1 to 4;
The pressure regulating assembly further comprises a connecting rotating shaft (6), the connecting rotating shaft (6) is arranged in the third flow channel (51), one end of the connecting rotating shaft (6) is in transmission connection with the first impeller (2), and the other end of the connecting rotating shaft (6) is in transmission connection with the second impeller (4).
2. Pressure regulating assembly according to claim 1, characterized in that the angle between the third flow channel (51) and the second flow channel (31) is an angle α,90 ° - α < 180 °; the included angle between the third flow channel (51) and the first flow channel (11) is an angle beta, 0 degrees is less than or equal to 90 degrees, and the angle alpha and the angle beta are positioned on the same side of the third flow channel (51) in the radial direction.
3. The pressure regulating assembly of claim 1, further comprising:
A second communication pipe (9), the second communication pipe (9) having a fourth flow passage (91), the fourth flow passage (91) having a fourth inlet (911) and a fourth outlet (912), the fourth inlet (911) being connected to the first outlet (112); and
A third communication pipe (10), the third communication pipe (10) having a fifth flow passage (101), the fifth flow passage (101) having a fifth inlet (1011) and a fifth outlet (1012), the fifth inlet (1011) being connected to the second outlet (312), the fourth outlet (912) being connected to the fifth outlet (1012) by a three-way joint to connect the low pressure inlet of the pressure matcher by a three-way joint.
4. A pressure matcher, comprising:
the pressure matcher body is provided with a low-pressure inlet;
A pressure regulating assembly as claimed in any one of claims 1 to 3, the first outlet (112) and/or the second outlet (312) being in communication with the low pressure inlet.
5. The pressure matcher of claim 4, wherein the pressure matcher body comprises:
-a main conduit (7), the main conduit (7) having a sixth flow channel (71), the sixth flow channel (71) extending in a preset direction, the sixth flow channel (71) having a sixth inlet (711) and a sixth outlet (712), the sixth inlet (711) constituting the low pressure inlet; and
-A high pressure conduit (8), the high pressure conduit (8) having a seventh flow channel (81), the seventh flow channel (81) having a seventh inlet (811) and a seventh outlet (812), at least a portion of the high pressure conduit (8) extending into the main conduit (7) such that the seventh outlet (812) is located in a sixth flow channel (71), the seventh flow channel (81) being in communication with the sixth flow channel (71), the seventh outlet (812) being oriented in the predetermined direction towards the sixth outlet (712).
6. The pressure matcher of claim 5, wherein the sixth flow passage (71) comprises a constriction chamber (713), the constriction chamber (713) being located upstream of the seventh inlet (811), the constriction chamber (713) being adjacent to the sixth inlet (711) in the preset direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210880696.6A CN115095555B (en) | 2022-07-25 | 2022-07-25 | Pressure regulating assembly and pressure matcher |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210880696.6A CN115095555B (en) | 2022-07-25 | 2022-07-25 | Pressure regulating assembly and pressure matcher |
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| CN115095555A CN115095555A (en) | 2022-09-23 |
| CN115095555B true CN115095555B (en) | 2024-06-25 |
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| CN202210880696.6A Active CN115095555B (en) | 2022-07-25 | 2022-07-25 | Pressure regulating assembly and pressure matcher |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN218717798U (en) * | 2022-07-25 | 2023-03-24 | 中国华能集团清洁能源技术研究院有限公司 | Pressure regulating assembly and pressure matcher |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0044494A1 (en) * | 1980-07-17 | 1982-01-27 | General Conveyors Limited | Nozzle for ring jet pump |
| CN1566715A (en) * | 2003-06-14 | 2005-01-19 | 王卫民 | Vapor jetting vacuum jet pressurizing device and its application |
| CN102518483A (en) * | 2011-12-30 | 2012-06-27 | 北京中科华誉能源技术发展有限责任公司 | Modularized steam waste pressure and waste heat power generation and balanced steam and heat supply system |
| GB2524782B (en) * | 2014-04-02 | 2016-04-20 | Verderg Ltd | Turbine assembly |
| JP2018123759A (en) * | 2017-02-01 | 2018-08-09 | パナソニックＩｐマネジメント株式会社 | Turbocompressor |
| EP3935283B1 (en) * | 2019-03-08 | 2024-01-10 | Pierburg GmbH | Side channel blower |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN218717798U (en) * | 2022-07-25 | 2023-03-24 | 中国华能集团清洁能源技术研究院有限公司 | Pressure regulating assembly and pressure matcher |
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