CN110552913A - Electrically driven multistage centrifugal compressor device with cooling circulation function - Google Patents

Abstract

An electric-driven multi-stage centrifugal compressor device with cooling cycle function, the front end surface of the casing is provided with an air inlet, the inner surface of the casing is fixed with a stationary blade, the interior of the stationary blade is provided with a cooling cavity, the The outer surface of the cooling cavity is fixedly connected to the inside of the casing through a circulation cavity, and both ends of the outer surface of the circulation cavity are respectively provided with a water inlet pipe and a water outlet pipe; A support rod, the bottom of the swing support rod is hinged with a first mounting plate through a second hinge shaft; an air outlet pipe is provided on the rear side of the upper surface of the casing, and an extension pipe is slidably connected to the inside of the air outlet pipe through a connecting plate, and the outlet pipe is The front end of the trachea is fixedly connected with a pressing plate, the inside of the pressing plate is slidably connected with the front end of the outer surface of the extension pipe, and both ends of the outer surface of the front end of the pressing plate are connected with threaded rods. The device can adjust the installation height, ensure the tension, improve the convenience and stability of use, and prolong the service life.

Description

Electric-driven multi-stage centrifugal compressor device with cooling cycle function

technical field

The invention relates to the technical field of compressors, in particular to an electric-driven multi-stage centrifugal compressor device with a cooling cycle function.

Background technique

When the air enters the compressor from the air inlet, and is guided by the wind guide wheel that rotates with the impeller, it enters the impeller. Under the action of the high-speed rotating impeller, the air is thrown from the center of the impeller to the outer edge of the impeller by centrifugal force, and the pressure gradually increases. The air flowing out of the impeller enters the diffuser, the speed decreases, the pressure increases again, and finally flows out of the compressor through the air outlet pipe.

When the compressor is in use, since the air is compressed at a high speed, a large amount of heat will be generated, and the cooling effect of the existing compressor is not ideal, which is easy to damage the internal blades and affect the service life; and the existing compressors are mostly used If the base is fixedly connected, the height cannot be adjusted according to the needs of the on-site installation, and the installation work is not smooth; in addition, the air outlet pipe is of a fixed length structure. , can not adapt to the distance between the two devices, it is easy to cause insufficient sealing of the connection position, affecting the stability of the air pressure.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an electrically driven multistage centrifugal compressor device with a cooling cycle function, which has a long service life, can adjust the installation height, and can improve the stability of the air pressure.

In order to achieve the above purpose, the present invention provides the following technical solutions: an electric-driven multi-stage centrifugal compressor device with a cooling cycle function, the front end surface of the casing (1) is provided with an air inlet (11), and the casing (1) is provided with an air inlet (11). (1) A stationary blade (12) is fixedly connected to the inner surface of the stationary blade (12), a cooling cavity (13) is arranged inside the stationary blade (12), and the outer surface of the cooling cavity (13) is fixedly connected through a circulation cavity (14). Inside the casing (1), a water inlet pipe (15) and a water outlet pipe (16) are respectively provided on both sides of the outer surface of the circulation cavity (14);

Both sides of the lower table of the housing (1) are hinged with a swing support rod (31) through a first hinge shaft (3), and the bottom of the swing support rod (31) is hinged with a second hinge shaft (32). a first mounting plate (33);

An air outlet pipe (2) is provided on the rear side of the upper surface of the casing (1), and an extension pipe (22) is slidably connected to the inside of the air outlet pipe (2) through a connecting plate (21). The extension pipe (22) A flange (24) is installed on the front end surface of the air outlet pipe (2); a pressing plate (41) is fixedly connected to the front end surface of the air outlet pipe (2), and the inside of the pressing plate (41) is connected to the outer surface of the extension pipe (22) through a through hole. The front end of the surface is slidably connected, and both ends of the outer side of the front end surface of the pressing plate (41) are connected with threaded rods (43). The outer surface of the flange (24) is rotatably connected to both ends of the rear side surface of the flange (24) through the rotating hole.

Preferably, a tensioning support rod (34) is fixedly connected to the center of the lower surface of the casing (1), and a tensioning support cylinder (35) is slidably sleeved at the lower end of the outer surface of the tensioning support rod (34). , the lower surface of the tensioning support cylinder (35) is fixedly connected with a second mounting plate (37), the inner lower end is fixedly connected with a support spring (36), and the upper surface of the support spring (36) is fixedly connected to the tensioning support The lower surface of the rod (34).

Preferably, the outer side of the front end surface of the flange (24) is provided with a mounting hole (25) for flange connection with other equipment.

Preferably, both the stationary vane (12) and the cooling cavity (13) are annular structures.

Preferably, the outer surface of the connecting plate (21) is slidably connected to the inner surface of the air outlet pipe (2) through a sealing ring (23).

Compared with the prior art, the beneficial effects of the present invention are:

1. The electric composite multi-stage centrifugal compressor device of the present invention can ensure the circulation area and improve the heat exchange effect through the built-in cooling cavity and the circulation cavity. At the same time, there are water inlet pipes and water outlet pipes on both sides of the outer surface of the circulation cavity, which can pass circulating water to cool the stationary blades, avoid damage to the blades due to excessive temperature, and improve stability.

2. In the present invention, the hinged first mounting seat is combined with the spring-supported second mounting seat to position the housing, so that the mounting height can be adjusted while ensuring the tension.

3. The invention can change the length of the air outlet pipe and adapt to different installation distances through the sliding connection of the extension pipe and the threaded rod adjustment structure, which can greatly improve the convenience and stability of use and ensure the service life.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the support structure schematic diagram of the present invention;

3 is a schematic cross-sectional view of the air outlet pipe of the present invention.

In the picture: 1 shell, 11 air inlet, 12 stationary vanes, 13 cooling cavity, 14 circulation cavity, 15 water inlet pipe, 16 water outlet pipe, 2 air outlet pipe, 21 connecting plate, 22 extension pipe, 23 sealing ring, 24 installation Flange, 25 mounting holes, 3 first hinge shaft, 31 swing support rod, 32 second hinge shaft, 33 first mounting plate, 34 tension support rod, 35 tension support cylinder, 36 support spring, 37 second installation Plate, 4 screws, 41 compression plate, 42 threaded holes, 43 threaded rods, 44 rotating blocks.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-3, the present invention provides a technical solution: a novel electric-driven multi-stage centrifugal compressor device with a cooling cycle function, comprising a casing 1, and an air inlet 11 is provided on the front surface of the casing 1 , the inner surface of the casing 1 is fixedly connected with a stationary blade 12, and a cooling cavity 13 is arranged inside the stationary blade 12. The stationary blade 12 and the cooling cavity 13 are both annular structures, and the circulation cavities 14 at both ends can be connected at different positions to ensure circulation. The outer surface of the cooling cavity 13 is fixedly connected to the interior of the shell 1 through the circulation cavity 14, and the two ends of the outer surface of the circulation cavity 14 are respectively provided with a water inlet pipe 15 and a water outlet pipe 16, which can pass into the circulating water. To reduce the internal temperature, avoid damage to the blade due to excessive temperature, and improve stability.

Both sides of the lower table of the housing 1 are hinged with a swing support rod 31 through a first hinge shaft 3, and the bottom of the swing support rod 31 is hinged with a first mounting plate 33 through a second hinge shaft 32, which can be adjusted by adjusting the swing support rod 31. The support height can be adjusted according to the angle, and at the same time, it can ensure that the first installation plate 33 is placed horizontally, so as to improve the stability and convenience, and ensure the smoothness of installation.

A tensioning support rod 34 is fixedly connected to the center of the lower surface of the housing 1 , a tensioning support cylinder 35 is slidably sleeved at the lower end of the outer surface of the tensioning support rod 34 , and a support spring 36 is fixedly connected to the inner lower end of the tensioning support cylinder 35 , the upper surface of the support spring 36 is fixedly connected to the lower surface of the tensioning support rod 34, and the lower surface of the tensioning support cylinder 35 is fixedly connected with a second mounting plate 37, which can be tensioned and supported to the housing 1 after installation to improve the Stability, avoid shaking.

The rear side of the upper surface of the housing 1 is provided with an air outlet pipe 2, the interior of the air outlet pipe 2 is slidably connected with an extension pipe 22 through a connecting plate 21, and the outer surface of the connecting plate 21 is slidably connected to the inner surface of the air outlet pipe 2 through a sealing ring 23, The air outlet pipe 2 can be lengthened while ensuring the tightness of the connection. The front end surface of the extension pipe 22 is provided with a mounting flange 24, and the outer side of the front end surface of the mounting flange 24 is provided with a mounting hole 25, which can be connected with the flanges of other equipment to ensure sealing. The front end surface of the air outlet pipe 2 is fixedly connected with a pressing plate 41 through screws 4, and the inside of the pressing plate 41 is slidably connected to the front end of the outer surface of the extension pipe 22 through a through hole. The threaded hole 42, the inner surface of the threaded hole 42 is threadedly connected with a threaded rod 43, the front end surface of the threaded rod 43 is provided with a rotating block 44, and the outer surface of the rotating block 44 is rotatably connected to the rear surface of the mounting flange 24 through the rotating hole. The length of the extension pipe 22 can be adjusted through the threaded rod 43 to adapt to different installation distances and ensure the tightness of the connection.

During the specific implementation of the present invention: during installation, the swing support rod 31 can be rotated around the first hinge shaft 3 according to the installation height requirements, the angle of support can be adjusted, and the support height can be changed, and the first installation plate can be installed at the same time. 33 rotates around the second hinge shaft 32, which can be kept horizontal, and then the two first mounting plates 33 can be fixed to the installation position, and the housing 1 can be positioned. When the installation is relatively high, the two first mounting plates 33 The spacing of 33 is relatively close. When the installation is relatively low, the spacing is relatively large, which is convenient for adjustment. At the same time, the second mounting plate 37 can be fixed, so that the support rod 34 can be tightened upward through the support spring 36, and the shell can also be tightened. Body 1 to ensure stability, and then the circulating pump can be connected to the water inlet pipe 15 and the water outlet pipe 16, and the circulating water can be passed through to exchange heat inside the casing to avoid excessive internal temperature and improve safety. When connecting the air outlet pipe 2 , the threaded rod 43 can be rotated, and the rotation block 44 can be rotated inside the mounting flange 24 to avoid interference. In this way, the extension pipe 22 can be slid inside the air outlet pipe 2 through the action of the threaded hole 42, and the extended pipe can be adjusted. The length is convenient to adapt to the distance between connections with other equipment, the installation adaptability is relatively high, and the sealing performance is guaranteed, which can greatly improve the convenience and stability of use.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (5)

1. An electrically driven multistage centrifugal compressor unit with cooling circulation, comprising a casing (1), characterized in that:

The front end surface of the shell (1) is provided with an air inlet (11), the inner side surface of the shell (1) is fixedly connected with a static blade (12), a cooling cavity (13) is arranged inside the static blade (12), the outer surface of the cooling cavity (13) is fixedly connected inside the shell (1) through a circulating cavity (14), and two sides of the outer surface of the circulating cavity (14) are respectively provided with a water inlet pipe (15) and a water outlet pipe (16);

Both sides of the lower surface of the shell (1) are hinged with a swing support rod (31) through a first hinge shaft (3), and the bottom of the swing support rod (31) is hinged with a first mounting plate (33) through a second hinge shaft (32);

An air outlet pipe (2) is arranged on the rear side of the upper surface of the shell (1), an extension pipe (22) is connected to the inside of the air outlet pipe (2) in a sliding mode through a connecting plate (21), and a flange (24) is mounted on the front end surface of the extension pipe (22); the front end fixed surface of outlet duct (2) is connected with pressure strip (41), and the inside of this pressure strip (41) is through the through-hole and the surface front end sliding connection of extension pipe (22) and the front end surface outside both ends of this pressure strip (41) all are connected with threaded rod (43), the front end surface mounting turning block (44) of threaded rod (43), the surface of this turning block (44) is rotated through rotating the hole and is connected in the rear side surface both ends of flange (24).

2. An electrically driven multistage centrifugal compressor unit with a cooling cycle function according to claim 1, characterized in that: fixedly connected with tensioning bracing piece (34) is located at the lower surface center of casing (1), the surface lower extreme slip cap of tensioning bracing piece (34) has a tensioning support section of thick bamboo (35), the lower fixed surface of a tensioning support section of thick bamboo (35) is connected with second mounting panel (37), inside lower extreme fixedly connected with supporting spring (36), and the last fixed surface of this supporting spring (36) is connected in the lower surface of tensioning bracing piece (34).

3. An electrically driven multistage centrifugal compressor unit with a cooling cycle function according to claim 1, characterized in that: and flange connection mounting holes (25) used for being connected with other equipment are formed in the outer side of the front end surface of the flange (24).

4. An electrically driven multistage centrifugal compressor unit with a cooling cycle function according to claim 1, characterized in that: the stationary blades (12) and the cooling cavity (13) are both of annular structures.

5. An electrically driven multistage centrifugal compressor unit with a cooling cycle function according to claim 1, characterized in that: the outer surface of the connecting plate (21) is connected with the inner side surface of the air outlet pipe (2) in a sliding way through a sealing ring (23).