CN202468498U - Axial-flow type jet flow air wave supercharger - Google Patents

Abstract

An axial-flow type jet flow air wave supercharger realizes the energy exchange between high-pressure and low-pressure gases through the operation of pressure wave, avoids the mixing diffusion energy loss, and has the advantages of higher isentropic efficiency, low rotational speed and the capability of operation with liquid. A rectangular pressure oscillation tube slotted channel with a variable cross section is adopted, the inlet loss and flowing loss of jet flow are reduced; a pressure balancing opening is arranged in the supercharger, so as to balance performances with different pressure ratios; a diffusion air director is arranged at a compression outflow port to effectively convert the kinetic energy of the airflow; and the axial-flow type jet flow air wave supercharger makes full use of the pressure energy in the manufacturing process and stratigraphic pressure energy of natural gas and the like, and is an efficient equipment choice for the effective utilization of pressure energy.

Description

Axial jet air wave supercharger

technical field

The utility model relates to an axial flow jet gas wave supercharger, which belongs to the technical field of realizing supercharging by gas jet flow. the

Background technique

The comprehensive utilization of gas pressure energy has important economic and social benefits. In terms of using high-pressure gas expansion to do work to compress low-pressure gas, commonly used equipment includes expander-compressor units, turbochargers and ejectors. Turbines and turbochargers rely on impellers to transfer energy, have complex structures, high rotation speeds and are difficult to operate with liquid. Although the injector has the characteristics of no rotating parts and simple structure, its efficiency is very low, only more than ten percent. the

Utility model content

The utility model provides a high-efficiency, low-speed gas jet supercharging device which can be operated with liquid-an axial flow jet gas wave supercharger. the

In the supercharger of the utility model, the high-pressure and low-pressure two-way gases are in direct contact, relying on the gas pressure wave to transfer the energy of the high-pressure gas pulse expansion work, and directly compress the low-pressure gas to obtain a gas with a middle pressure. Different from the conventional jet mixing and compression, the above process basically does not mix the two-way gas, so the jet energy loss is small and the compression efficiency is high. the

The utility model provides a gas jet supercharger with relatively simple structure, high efficiency, low rotating speed, convenient maintenance, operation with liquid, large processing capacity flexibility, and strong medium adaptability, which meets the needs of oil and gas field exploitation and other occasions. The need for efficient utilization of pressurized gas pressure. the

The technical solution that the utility model takes is:

The utility model is an axial flow jet air wave supercharger relying on the sequential jet flow of pressure gas to make unsteady expansion work and supercharging. Drum jacket 11, a plurality of grooves 10 as pressure oscillation tubes, main shaft 18, left body 4, right body 16, shell 12, high-pressure jet nozzle 2, low-pressure air injection port 8, medium-pressure outlet 13, all The pressure port 20, the high-pressure air inlet 1 and the high-pressure buffer chamber 3, the low-pressure air inlet 7 and the low-pressure buffer chamber 6, the medium-pressure air outlet 15 and the medium-pressure buffer chamber 19 are formed. Inside the drum 9, there are a plurality of closed grooves 10 as pressure oscillation tubes arranged around the circumference. The high-pressure jet nozzle 2 and the medium-pressure outlet 13 are stationary and placed at the two ends of the drum 9 respectively. To the height of the radius, they are respectively aligned with the opening at the beginning and the opening at the end of the channel 10 in the drum 9 . With the rotation of the drum 9, the high-pressure jet nozzles 2 sequentially jet into the circumferentially arranged channels 10, generating compression waves to compress the gas in the channels 10 to increase the pressure, and the channels 10 rotate through a certain angle with the drum. Afterwards, its end opening coincides with the medium pressure outlet 13 in the circumferential direction, and the gas after the boost is discharged from the channel; after the jet flow, the beginning opening of the channel 10 is sealed by the solid wall around the nozzle due to turning over the high-pressure jet nozzle 2. Blocking, an expansion wave is generated at the opening at the beginning to reduce the pressure there. When the opening at the beginning of the channel 10 turns to coincide with the low-pressure air ejection port 8, the low-pressure air is sucked into the channel 10, and then the above jet and compression process is repeated. the

The rotation of the rotating drum 9 in the supercharger of the utility model is only required for generating periodic jet flow, compression, exhaust and air intake, rather than performing energy conversion like a turbomachinery, so its rotating speed does not need to be very high (<5000r /min). the

In the ring cavity surrounded by the outer circle of the drum 9 and the inner circle of the drum jacket 11, the ring cavity is divided circumferentially by a plurality of long narrow walls partitioned along the longitudinal direction, that is, grid plates 21, forming a ring cavity in the ring cavity. A plurality of channels 10 that are open at both ends and closed at the periphery. The axis of the channel 10 forms a certain radial expansion angle with the axis of the drum 9, and also forms a certain circumferential angle with the generatrix of the surface of the drum 9. The grooves The flow section of the channel is equal section, variable section or equal section plus variable section; the flow area of variable section adopts the method of continuously increasing the depth, width, or depth and width of the channel 10 along the channel 10. The fluid flow in the medium increases gradually, the high-pressure jet nozzle 2 and the medium-pressure outlet 13 are radially aligned with the beginning port and the end port of the pressure oscillation pipe groove 10, and the axes of the two are staggered by a certain amount along the turning direction of the drum. The included angle of the circle, the medium pressure outlet 13 and the medium pressure buffer chamber 19 are connected by a diffuser deflector 14, and the right body 16 is also provided with an equalizer that enables the channel 10 to communicate with the medium pressure buffer chamber 19 Pressure hole 20. the

In order to make the axial-flow jet air wave supercharger of the utility model have higher efficiency and adaptability, the following structural features are also adopted:

1. As the key channel of the compression process, the flow area of the channel 10 gradually expands along the flow direction, or part of the length section gradually expands, so as to weaken the intensity of compression waves superimposed into shock waves and improve the isentropy of the process. Improve compression efficiency. the

2. A diffuser deflector 14 is provided between the medium pressure outlet 13 and the medium pressure buffer chamber 19 to convert the kinetic energy of the outflow medium pressure gas into pressure energy without loss. the

3. In order to ensure better performance of the equipment under different pressure ratios, the right body 16 is provided with a pressure equalizing hole 20 that enables the channel 10 to communicate with the medium pressure buffer chamber (19). After a cycle is completed, if the channel The pressure in 10 is higher than the pressure equalizing hole 20, and part of the gas is discharged into the medium pressure buffer chamber 19 through the pressure equalizing hole 20, reducing the pressure in the channel; and vice versa. In this way, the pressure in the channel 10 can be substantially equal to the pressure of the medium pressure outlet 13, so as to avoid interference pressure waves when the opening at the end of the channel 10 coincides with the medium pressure outlet 13 in the next cycle. the

The beneficial effects of the utility model are:

Obtain a new supercharger equipment with low rotation speed, relatively simple structure, fast energy transfer speed, liquid-carrying operation, high-efficiency pressure exchange between two gases, and effective use of pressure energy. The utility model shaft-through jet gas wave supercharger is suitable for the exchange of pressure energy among various gas media. It has great advantages in using the natural gas pressure energy of high-pressure and high-yield gas wells to increase the pressure level of low-pressure and low-yield gas wells, so as to make low-pressure gas wells stable and high-yield. Value. In addition, it is also applicable to the utilization of industrial waste gas pressure, as well as vacuum evaporation and vacuum purification in petroleum and chemical industries. the

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. the

Description of drawings

Fig. 1 is a structural schematic diagram of an axial-flow jet air wave supercharger of the present invention. the

Fig. 2 is a schematic diagram of the first structure of the drum channel. the

Fig. 3 is a schematic diagram of the second structure of the drum channel. the

Figure 4 is a schematic diagram of the position and shape of the pressure equalizing port. the

In the figure: 1 high-pressure air inlet, 2 high-pressure jet nozzle, 3 high-pressure buffer chamber, 4 left body,

5 Compression flange of the left body, 6 Low-pressure buffer chamber, 7 Low-pressure air inlet, 8 Low-pressure air injection port, 9 Rotary drum, 10 Pressure oscillation pipe groove, 11 Rotary drum jacket, 12 Shell, 13 Medium-pressure outlet Mouth, 14 diffuser deflector, 15 medium pressure air outlet, 16 right body, 17 right body compression flange, 18 main shaft, 19 medium pressure buffer cavity, 20 pressure equalizing port, 21 longitudinal partition grid wall. the

Detailed ways

A typical implementation of the utility model axial flow jet air wave supercharger is described as follows, but not limited to this implementation:

Axial-flow jet air wave supercharger mainly consists of a cylindrical, truncated, or combined cylindrical and truncated drum 9, a drum jacket 11, multiple pressure oscillation pipe channels 10, a main shaft 18, a left body 4, Right body 16, shell 12, high-pressure jet nozzle 2, low-pressure air injection port 8, medium-pressure outlet 13, pressure equalization port 20, high-pressure air inlet 1 and high-pressure buffer chamber 3, low-pressure air inlet 7 and low-pressure buffer Cavity 6, medium pressure air outlet 15 and medium pressure buffer chamber 19 are formed. Between the outer circle of drum 9 and the inner circle of drum jacket 11, a plurality of long and longitudinally separated narrow walls 21 pair the outer circle of drum 9 and the inner circle of drum jacket 11. The ring cavity surrounded by the inner circle of the drum jacket 11 is divided to form a plurality of circumferentially arranged grooves 10 with both ends open and the periphery closed. The grooves 10 are along the axial direction of the drum 9 Arranged vertically. the

A plurality of long and longitudinally partitioned narrow walls 21 divide the ring cavity formed between the outer circle of the drum 9 and the inner circle of the drum jacket 11, and form a structural form of a plurality of open channels 10 in the ring cavity. One is to longitudinally process narrow grooves uniformly distributed in the circumferential direction and in the same number on the outer surface of the drum 9 and the inner surface of the drum jacket 11, arrange the drum 9 and the drum jacket 11 concentrically, and make the drum 9 Align with the narrow grooves on the drum jacket 11 along the radial radial direction, insert the grid plate 21 into the aligned narrow grooves and then dip solder and seal to form multiple longitudinally sealed channels 10 between the drum and the jacket. the

A plurality of long and longitudinally partitioned narrow walls 21 divide the ring cavity formed between the outer circle of the drum 9 and the inner circle of the drum jacket 11, and form a structural form of a plurality of open channels 10 in the ring cavity. The second is to longitudinally process grooves evenly distributed along the circumferential direction on the outer surface of the drum 9, and then insert the drum jacket 11 into the drum 9, and the inner diameter and taper of the drum jacket 11 are the same as the outer diameter and taper of the drum 9. Equal, form a plurality of longitudinally sealed channels 10 between the drum and the sleeve. the

The flow area of the channel 10 changes along the way, and the form of change is one of the following: it gradually expands from the beginning to the end, or first gradually expands and then remains constant, or first remains unchanged and then gradually expands, or It is always the same, that is, the length of the diverging section accounts for 0% to 100% of the length of the entire channel 10 . The method for the gradual expansion of the flow area of the channel 10 is to increase gradually in the direction of its depth and width, and the gradual expansion angle is between 0° and 60°. ~100mm. the

The grooves 10 are arranged along the longitudinal direction of the drum, and the angle between the axis and the generatrix of the surface of the drum 9 is 0-50°; in the circular platform section of the drum 9, the axes of the grooves 10 gradually extend radially along the longitudinal direction. To expand, the angle with the axis of the drum is 0-60°. the

A diffuser deflector 14 is provided at the junction of the medium pressure outlet 13 and the medium pressure buffer chamber 19, which is composed of a gradually expanding and closed flow channel with a curved surface transition. The expansion angle of the flow channel is 5-60°, and the axis of the flow channel The radial bending angle with the axis of the rotating drum 9 gradually increases and is 0-90°. the

The open angle between high-pressure jet nozzle 2 and medium-pressure outlet 13 is 5～330° according to the circumferential steering stagger, and the relative rotation positioning of left and right body 4 and 16 is adjusted to determine this angle. the

There is a staggered rotation angle of 10-180° between the pressure equalizing port 20 and the medium pressure outlet 13 , and along the rotation direction of the drum, the medium pressure outlet 13 is in front and the pressure equalizing port 20 is behind. the

The number of channels 10 is 5-300, the length is 10-4000 mm, and the diameter of the drum 9 is 10-4000 mm. the

The working mechanism of the utility model axial flow jet air wave supercharger is described as follows:

The high-pressure gas enters the high-pressure buffer chamber 3 from the high-pressure air inlet 1, accelerates into a jet flow through the stationary high-pressure jet nozzle 2, and is injected into each channel 10 of the drum in sequence with the rotation of the drum 9. A compression wave is generated in the pressurized channel 10 to pressurize the gas in the channel 10, and then the channel is turned to align with the middle pressure outlet 13, and the pressurized gas is discharged. After the channel 10 and the high-pressure jet nozzle 2 are turned away and blocked, an expansion wave propagating into the channel will be generated, so that the pressure at the beginning of the channel 10 will drop, and the channel 10 will be connected to the low-pressure air injection port 8 again immediately. Gas at low pressure enters channel 10 . Due to the rotation, each channel continuously works successively, so the pressurization process can be carried out continuously, and the gas is collected in the medium-pressure buffer chamber 19 and then discharged continuously. the

The operating parameters of the axial flow jet air wave supercharger are as follows:

The speed of the main shaft 18 and the drum 9: 300～6000r/min;

Pressure range of inlet and outlet: 0~15MPa;

The pressure ratio range of high and low pressure gas: 1.2~6. the

Claims (9)

1. one kind relies on pressed gas jet successively, makes non-permanent expansion work and the axial flow jet wave pressure supercharger of supercharging, is mainly connect the rotary drum (9) of frustoconic shape by cylindrical, frustoconic shape or cylinder; Rotary drum overcoat (11), many conduits (10), main shaft (18) as the pressure oscillation pipe; Left side body (4), right body (16), shell (12); High-pressure spray nozzle (2), low pressure gas ejecting port (8), middle extrusion head piece (13); All press mouthful (20), high pressure admission mouth (1) and high-pressure buffer chamber (3), low-pressure admission mouth (7) and low pressure buffer chamber (6); Middle extrusion gas port (15) and middle pressure buffer cavity (19) are formed, and it is characterized in that: in the ring cavity that surrounds between the circle in rotary drum (9) cylindrical and the rotary drum overcoat (11), be that screen (21) carries out circumferential cutting to ring cavity with many long narrow walls that longitudinally cut off; In ring cavity, form many both ends opens and the conduit (10) of border seal, the axis of conduit (10) becomes certain radial dilatation angle with the axis of rotary drum (9), and also the bus with rotary drum (9) surface becomes certain circumferential angle; The passage section of conduit (10) is that uniform section, variable cross section or uniform section add variable cross section, and the flow area of variable cross section adopts the degree of depth, width with conduit (10); Or the ever-increasing mode of dark, wide size; Direction of flow gradually expansion type in the conduit (10) increases, high-pressure spray nozzle (2) and middle extrusion head piece (13) respectively with the top mouth and the end port radially aligned in pressure oscillation tube seat road (10), and the axis of the two staggers along turning to of rotary drum the circumference angle certain; The middle head piece (13) that extrudes is provided with diffusion fluid director (14) with middle pressure buffer cavity (19) connecting part, also is provided with the balancing orifice (20) that conduit (10) is communicated with middle pressure buffer cavity (19) on the right body (16).

2. pressurized machine as claimed in claim 1; It is characterized in that: the narrow wall (21) of many long vertical partitions carries out cutting to the ring cavity that surrounds between the circle in rotary drum (9) cylindrical and the rotary drum overcoat (11); One of structural type that in ring cavity, forms many both ends open conduits (10) is: vertically process along the narrow groove that circumferentially is uniformly distributed with and quantity is identical at rotary drum (9) outer round surface and rotary drum overcoat (11) internal circular surfaces; With rotary drum (9) and rotary drum overcoat (11) arranged concentric; And make the radially radiation direction alignment of each narrow groove on rotary drum (9) and the rotary drum overcoat (11); Screen (21) is inserted immersed solder sealing behind the narrow groove of alignment, form between drum, the cover many vertically along the airtight conduit of journey (10).

3. pressurized machine as claimed in claim 1; It is characterized in that: the narrow wall (21) of many long vertical partitions carries out cutting to the ring cavity that surrounds between the circle in rotary drum (9) cylindrical and the rotary drum overcoat (11); Two of the structural type of many both ends open conduits of formation (10) are in ring cavity: vertically process along the conduit that circumferentially is uniformly distributed with at rotary drum (9) outer round surface; Again rotary drum overcoat (11) is inserted in rotary drum (9); The internal diameter of its rotary drum overcoat (11) and tapering equate with the external diameter and the tapering of rotary drum (9), forms between drum, the cover many vertically along the airtight conduit of journey (10).

4. pressurized machine as claimed in claim 1 is characterized in that: the form that conduit (10) flow area changes is a kind of in following: terminad enlarges gradually from top; Remain unchanged again after enlarging gradually earlier; Enlarge gradually again after remaining unchanged earlier; All the time constant, promptly the length of gradually expanding section accounts for 0%～100% of whole conduit (10) length:

The method of conduit (10) flow area flaring is on its degree of depth, width direction, to pursue to increase, and the flaring angle is between 0～60 °, and the altitude range of conduit (10) passage section is 1～100mm, and width range is 1～100mm.

5. pressurized machine as claimed in claim 1 is characterized in that: conduit (10) is along vertical arrangement of rotary drum, and the angle between the surperficial bus of its axis and rotary drum (9) is 0～50 °; In the round platform section of rotary drum (9), the axis of conduit (10) along vertically gradually to radially expansion, with the angle of rotary drum axis be 0～60 °.

6. pressurized machine as claimed in claim 1; It is characterized in that: the diffusion fluid director (14) that middle extrusion head piece (13) and middle pressure buffer cavity (19) connecting part are provided with; Be that flaring closed flow by surface blending constitutes; The angle of flare of runner is 5～60 °, between runner axis and rotary drum (9) axis radially bend angle gradually transition increase, be 0～90 °.

7. pressurized machine as claimed in claim 1 is characterized in that: it is 5～330 ° that high-pressure spray nozzle (2) turns to the wrong angle of opening with middle extrusion head piece (13) by circumference, by the location that relatively rotates of left and right body (4) and (16), adjusts and confirms this angle.

8. pressurized machine as claimed in claim 1 is characterized in that: all press the circumference rotation alternate angle that has 10～180 ° between mouthful (20) and the middle extrusion head piece (13), clockwise bulging sense of rotation, middle extrusion head piece (13) is preceding, all press mouth (20) after.

9. pressurized machine as claimed in claim 1 is characterized in that: the quantity of conduit (10) is 5～300, and length is 10～4000mm, and the diameter of rotary drum (9) is 10～4000mm.

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