阅读说明：本技术 压缩机 (Compressor with a compressor housing having a plurality of compressor blades ) 是由 小田贵士 平田大辅 于 2020-01-21 设计创作，主要内容包括：本发明提供一种压缩机。该压缩机(1)具备固定于基底(F)并从铅垂方向(Dv)的下方支承压缩机主体(20)的基台(10)、以及将压缩机主体(20)与基台(10)以能够装卸的方式连结的连结部。压缩机主体(20)具备将外壳(21)的内外连通并从外壳(21)的外周面向外侧突出的吸入侧突出管(28A)以及排出侧突出管(28B)。基台(10)具备形成有支承外壳(21)的下部的支承面(11f)的支承台部(11)、以及从支承台部(11)向铅垂方向(Dv)的下方延伸并形成有能够供吸入侧突出管(28A)插入内部的贯通孔的吸入口(12)。(The invention provides a compressor. The compressor (1) is provided with a base (10) which is fixed to a base (F) and supports a compressor main body (20) from below in the vertical direction (Dv), and a connecting portion which detachably connects the compressor main body (20) and the base (10). The compressor body (20) is provided with a suction side protruding pipe (28A) and a discharge side protruding pipe (28B) which communicate the inside and outside of the housing (21) and protrude outward from the outer peripheral surface of the housing (21). The base (10) is provided with a support table part (11) on which a support surface (11f) for supporting the lower part of the housing (21) is formed, and a suction port (12) which extends from the support table part (11) in the vertical direction (Dv) and is formed with a through hole into which a suction-side protruding tube (28A) can be inserted.)

1. A compressor, wherein,

the compressor is provided with:

a compressor main body;

a base fixed to the base and supporting the compressor main body from below in a vertical direction; and

a connecting portion that detachably connects the compressor main body and the base,

the compressor main body is provided with:

a cylindrical housing;

a rotor disposed within the housing and rotatable about an axis;

a bearing portion that supports the rotor to be rotatable with respect to the housing; and

a protruding pipe which communicates the inside and outside of the housing and protrudes outward from the outer peripheral surface of the housing,

the base station is provided with:

a support table portion having a support surface for supporting a lower portion of the housing; and

and a connection pipe extending downward in the vertical direction from the support base portion and having a through hole into which the protruding pipe can be inserted.

2. The compressor of claim 1,

the compressor further includes a sealing member that seals between an outer circumferential surface of the protruding pipe and an inner circumferential surface of the connection pipe.

3. The compressor of claim 1 or 2,

the base has a concave portion recessed downward in the vertical direction for the housing to fit into,

the bearing surface is formed at least in part of the recess.

4. The compressor according to any one of claims 1 to 3,

the housing has a pair of flange portions projecting in a horizontal direction from an outer peripheral surface,

the base has a pair of receiving portions on which the pair of flange portions can be placed.

Technical Field

The present invention relates to a compressor.

The present application claims priority to Japanese application No. 2019-016838 at 2/1/2019, and the contents thereof are incorporated herein by reference.

Background

As a compressor in which a rotor driven to rotate around an axis is housed inside a casing, a centrifugal compressor that compresses gas by centrifugal force is cited. The centrifugal compressor may be of a type including a housing that can be divided into two upper and lower parts, or a type including a cylindrical housing that cannot be divided into two upper and lower parts and has both ends open. A compressor provided with a vertically-inseparable housing is provided with an internal unit integrally configured with a rotor, a bearing, a seal member, and the like, which are components other than the housing. The internal unit is accommodated in the housing.

However, when maintenance of the compressor including such an internal unit is performed, the internal unit is drawn out from an opening formed at one end of the cylindrical housing. Therefore, it is necessary to secure a sufficient space for extracting the internal unit in a region adjacent to a position where the compressor is provided. In addition, the work of horizontally withdrawing the internal unit from the case may be difficult.

In view of this, patent document 1 discloses a structure in which a housing can be divided vertically in a compressor provided with an internal unit. The housing has an upper half on the upper side and a lower half on the lower side. The inner unit is at least integrally formed with a rotor rotatable around an axis, a bearing portion rotatably supporting the rotor, and an annular seal portion rotatably sealing the rotor and a peripheral surface of the rotor. According to this structure, after the upper half of the housing is removed, the internal unit is lifted and taken out from the lower half of the housing. Then, the new internal unit is suspended and attached to the lower half portion of the casing, so that the components inside the compressor can be replaced at once.

Prior art documents

Patent document

Patent document 1: japanese patent No. 5868646

However, in the configuration disclosed in patent document 1, even at the time of maintenance, it is necessary to place the upper half portion of the housing, which is removed to remove the internal unit, near the position where the compressor is provided. Therefore, it is necessary to secure a sufficient space in the vicinity of the compressor. Further, since it takes time and effort to attach and detach the upper half of the housing from and from the lower half of the housing, there is room for improvement in maintainability.

The invention provides a compressor capable of improving maintainability.

Disclosure of Invention

A compressor according to a first aspect of the present invention includes: a compressor main body; a base fixed to the base and supporting the compressor main body from below in a vertical direction; and a coupling portion that detachably couples the compressor main body and the base, the compressor main body including: a cylindrical housing; a rotor disposed within the housing and rotatable about an axis; a bearing portion that supports the rotor to be rotatable with respect to the housing; and a protruding tube that communicates the inside and outside of the housing and protrudes outward from the outer peripheral surface of the housing, the base including: a support table portion having a support surface for supporting a lower portion of the housing; and a connection pipe extending downward in the vertical direction from the support table portion and having a through hole into which the protruding pipe can be inserted.

With this configuration, the compressor main body is supported on the support surface of the base fixed to the base. Therefore, the compressor body can be directly detached from the base by being lifted from the support surface of the base during maintenance. Thus, when the compressor body is removed, it is not necessary to remove other members or move the compressor body in the horizontal direction. As a result, the space required for maintenance can be reduced around the compressor. Further, since the compressor main body detached from the base includes the cylindrical housing, handling such as transportation can be easily performed. Further, when the compressor main body is attached to the base, if the protruding pipe of the compressor main body is inserted into the connection pipe of the base, the fluid compressed in the compressor main body can be moved into and out of the housing through the protruding pipe and the connection pipe. Therefore, the compressor can be used after maintenance without performing a complicated connecting operation with respect to the base.

In the compressor according to the second aspect of the present invention, in the first aspect, the compressor may further include a sealing member that seals between an outer peripheral surface of the protruding pipe and an inner peripheral surface of the connection pipe.

With this configuration, when the projecting pipe of the compressor main body is inserted into the connecting pipe of the base, leakage of fluid from between the projecting pipe and the connecting pipe via the seal member can be suppressed.

In the compressor according to a third aspect of the present invention, in the first or second aspect, the base may include a recess that is recessed downward in the vertical direction and into which the housing is fitted, and the support surface may be formed at least in part of the recess.

With this configuration, when the compressor main body is mounted on the base, the lower portion of the casing of the compressor main body can be fitted into the recess, and the compressor main body can be easily positioned with respect to the base.

In the compressor according to a fourth aspect of the present invention, in any one of the first to third aspects, the housing may have a pair of flange portions protruding in a horizontal direction from an outer peripheral surface, and the base may have a pair of receiving portions on which the pair of flange portions can be placed.

With this configuration, the pair of flange portions of the housing are placed on the pair of receiving portions of the base, whereby the compressor main body can be easily positioned with respect to the base.

Effects of the invention

According to the present invention, the maintainability of the compressor can be improved.

Drawings

Fig. 1 is a sectional view schematically showing the structure of a compressor according to an embodiment of the present invention.

Fig. 2 is a perspective expanded view schematically showing the structure of a compressor according to an embodiment of the present invention.

Fig. 3 is a side view schematically showing a state in which the compressor according to the embodiment of the present invention is viewed from one side in the axial direction.

Fig. 4 is a flowchart showing a flow of a maintenance method of a compressor according to an embodiment of the present invention.

Fig. 5 is a side view schematically showing a state in which the compressor main body is detached from the base in the compressor according to the embodiment of the present invention.

Description of reference numerals:

a compressor;

an abutment;

a support table portion;

a bearing surface;

a suction inlet (connecting tube);

a discharge port (connecting tube);

a recess;

a first bolster (bolster);

a second bolster (bolster);

a compressor body;

a housing;

a kit;

a rotor;

a bearing portion;

a septum;

a first flange portion (flange portion);

a second flange portion (flange portion);

a head;

a suction side protruding tube (protruding tube);

discharge side protruded pipe (protruded pipe);

a suction side seal member (seal member);

a discharge-side sealing member (sealing member);

a joint portion;

a bolt;

a rotor shaft;

an impeller;

a journal bearing;

a thrust bearing;

243.. bearing cap;

a septum half;

a lower half diaphragm;

an inlet wall;

a final stage diaphragm;

a suction side head;

a suction side head outer facing;

a discharge-side head;

an outlet wall portion;

a discharge-side head body;

276f.. discharging the side head exterior surface;

291.. a suction inlet;

292.. a housing flow path;

a discharge port;

axial;

dc... circumferential;

dh.. horizontal direction;

dr. radial;

dv.. vertical direction;

a substrate;

an axis;

s1. a connection releasing procedure;

s2. detaching the compressor main body;

s3. carrying a compressor main body;

and S4. a connecting process.

Detailed Description

Hereinafter, an embodiment of a compressor according to the present invention will be described with reference to the drawings. However, the present invention is not limited to these embodiments.

Fig. 1 is a sectional view schematically showing the structure of a compressor according to an embodiment of the present invention. Fig. 2 is a perspective expanded view schematically showing the structure of a compressor according to an embodiment of the present invention. Fig. 3 is a side view schematically showing a state in which the compressor according to the embodiment of the present invention is viewed from one side in the axial direction.

As shown in fig. 1, the compressor 1 of the present embodiment is a one-shaft multi-stage centrifugal compressor (multi-stage centrifugal compressor) provided with a plurality of impellers 232. As shown in fig. 1 to 3, the compressor 1 of the present embodiment includes a base 10, a compressor main body 20, and a coupling portion 40 (see fig. 3).

Hereinafter, a direction in which the axis O of the rotor 23 extends is referred to as an axial direction Da. The radial direction with respect to the axis O is simply referred to as the radial direction Dr. The vertical direction on the paper surface of fig. 1 and 3 in the radial direction Dr perpendicular to the axis O is defined as a vertical direction Dv. The radial direction Dr perpendicular to the axis O and the horizontal direction in fig. 1 and 3 as the axial direction Da are set as the horizontal direction Dh. The direction around the rotor 23 with the axis O as the center is defined as a circumferential direction Dc.

The base 10 is fixed to the substrate F. The base 10 supports the compressor body 20 from below in the vertical direction Dv. The base 10 includes a support base 11, an inlet (connection pipe) 12, and an outlet (connection pipe) 13.

As shown in fig. 2 and 3, the cross section of the support table portion 11 perpendicular to the axis O is a semicircular ring shape centered on the axis O. The support table portion 11 extends in the axial direction Da so as to have this shape. The support table portion 11 includes a concave portion 14 that is recessed downward in the vertical direction Dv and into which the lower portion of the compressor main body 20 is fitted. The concave portion 14 opens upward in the vertical direction Dv. The support table portion 11 has a support surface 11f for supporting the compressor main body 20 at least in a part of the recess portion 14. The support surface 11f in the present embodiment is the inner peripheral surface of the support base portion 11 and is the entire surface forming the recess 14. Thus, the support base portion 11 covers the lower outer peripheral surface of the compressor main body 20 housed therein from below.

In the support table portion 11, a pair of receiving portions, i.e., a first receiving portion (receiving portion) 16A and a second receiving portion (receiving portion) 16B, are formed at both ends in the circumferential direction Dc. The first receiving portion 16A and the second receiving portion 16B are formed in a shape on which a first flange portion 26A and a second flange portion 26B, which will be described later, can be placed. Specifically, the first receiving portion 16A and the second receiving portion 16B are each formed by a flat surface facing upward in the vertical direction Dv. The first receiving portion 16A and the second receiving portion 16B are each a plane extending in the axis O direction. A plurality of screw holes for bolt fixing, to which bolts 41 described later can be fixed, are formed in the first receiving portion 16A and the second receiving portion 16B so as to be aligned in the axial direction Da.

As shown in fig. 1 to 3, the suction port 12 extends downward in the vertical direction Dv from the support table portion 11. The suction port 12 is cylindrical. A through hole into which a suction-side protruding tube 28A described later can be inserted is formed inside the suction port 12. The through hole opens to the support surface 11f. The suction port 12 supplies a process gas (fluid) to be compressed from the outside of the compressor 1 to the inside of the casing 21.

The discharge port 13 is provided at a position apart from the suction port 12 in the axis O direction. The discharge port 13 extends downward in the vertical direction Dv from the support table portion 11. The discharge port 13 is cylindrical. A through hole into which a discharge-side projecting tube 28B described later can be inserted is formed inside the discharge port 13. The through hole opens on the support surface 11f at a position apart from the through hole of the suction port 12. The discharge port 13 discharges the compressed process gas from the inside of the casing 21 to the outside of the compressor 1.

The compressor body 20 can internally compress the supplied fluid. As shown in fig. 1, the compressor main body 20 includes a casing 21, a sleeve 22, a suction-side protruding pipe (protruding pipe) 28A, and a discharge-side protruding pipe (protruding pipe) 28B.

The housing 21 has a cylindrical shape extending in the direction of the axis O. The case 21 covers the bundle 22 from the outer peripheral side. The housing 21 is cylindrical with a center axis arranged in the same manner as the axis O of the rotor 23 described later as a center and with open end portions on both sides in the axial direction Da. The housing 21 is not vertically divided but formed as an integral simple body. Here, the housing 21 may be formed by integrally joining a plurality of materials by welding or the like.

The package 22 is housed in the case 21. The sleeve 22 of the present embodiment includes a rotor 23, a bearing portion 24, a plurality of diaphragms 25, and a plurality of head portions 27. In the kit 22, the rotor 23, the bearing portion 24, the plurality of diaphragms 25, and the pair of head portions 27 are integrally movable.

The rotor 23 is rotatable about the axis O. The rotor 23 includes a rotor shaft 231 extending in the axial direction Da about the axis O, and a plurality of impellers 232 rotating together with the rotor shaft 231.

The impeller 232 is fixed to the outer peripheral surface of the rotor shaft 231. The impeller 232 rotates together with the rotor shaft 231 to compress the process gas using centrifugal force. The impeller 232 is provided in a plurality of stages in the axial direction Da on the rotor shaft 231. The impeller 232 is a so-called open-type impeller including a disk and blades.

The bearing portion 24 supports the rotor shaft 231 rotatably about the axis O. The bearing portion 24 is fixed to a head portion 27 described later. The bearing portion 24 includes a pair of journal bearings 241 provided at both ends of the rotor shaft 231, and a thrust bearing 242 provided at one end of the rotor shaft 231.

The pair of journal bearings 241 functions to receive a load in the radial direction Dr applied to the rotor shaft 231. These journal bearings 241 are fixed to the head 27 by a fixing mechanism (not shown) such as a bolt that can be attached and detached.

The thrust bearing 242 serves to receive a load in the axial direction Da acting on the rotor shaft 231. The thrust bearing 242 is mounted inside a box-shaped bearing cover 243. The bearing cap 243 is fixed to the one head portion 27 by a detachable fixing mechanism such as a bolt.

The diaphragm 25 is arranged to cover the rotor 23 from the radially outer side. The diaphragm 25 is annular and centered on the axis O. The annular diaphragm 25 has an upper semi-annular diaphragm 251 and a lower semi-annular diaphragm 252 in the vertical direction Dv with respect to the axis O of the rotor 23. The upper half diaphragm 251 and the lower half diaphragm 252 are fixed by a fixing mechanism such as a bolt that can be attached and detached. A plurality of (five in the present embodiment) separators 25 are arranged in a stacked manner in the axial direction Da. The plurality of separators 25 are fixed to each other so as to have a cylindrical shape extending in the axial direction Da as a whole.

The pair of heads 27 are annular members and are formed in a size capable of closing openings at both ends of the housing 21. The head 27 has both ends of the rotor shaft 231 inserted therethrough. The head 27 of the present embodiment includes a suction-side head 271 disposed on one side (first side) in the axial direction Da with respect to the plurality of diaphragms 25, and a discharge-side head 272 disposed on the other side (second side) in the axial direction Da with respect to the plurality of diaphragms 25.

The suction-side head 271 forms a suction port 291 together with the inlet wall 255, which is the diaphragm 25 disposed on the side closest to the axial direction Da. The suction-side head outer surface 271f, which is a surface of the suction-side head 271 facing the axial direction Da, faces the outside of the compressor main body 20.

The discharge-side head 272 forms a discharge port 293 together with the final-stage diaphragm 256, which is the diaphragm 25 disposed at the other side closest to the axial direction Da. The discharge-side head 272 of the present embodiment includes an outlet wall 275 forming a part of the discharge port 293, and a discharge-side head body 276 fixed to the outlet wall 275.

The discharge-side head main body 276 is adjacent to the other side of the outlet wall portion 275 in the axial direction Da. A discharge side head outer surface 276f, which is a surface of the discharge side head main body 276 facing the other side in the axial direction Da, faces the outside of the compressor main body 20. Therefore, both ends of the sleeve 22 in the axial direction Da are exposed to the outside of the housing 21.

As shown in fig. 2 and 3, a first flange portion (flange portion) 26A and a second flange portion (flange portion) 26B are formed on the outer peripheral surface of the housing 21 at both ends in the circumferential direction Dc. The first flange portion 26A and the second flange portion 26B each protrude from the housing 21 toward the outside in the radial direction Dr in the center in the vertical direction Dv in the horizontal direction Dh when viewed in the axial direction Da. The first flange portion 26A and the second flange portion 26B are each long extending in the axis O direction. The first flange portion 26A is placed on the first receiving portion 16A. The second flange portion 26B is placed on the second receiving portion 16B.

As shown in fig. 1 and 2, the suction-side projecting tube 28A and the discharge-side projecting tube 28B are cylindrical. The suction-side projecting tube 28A and the discharge-side projecting tube 28B project outward from the outer peripheral surface of the housing 21. The suction-side protruded pipe 28A and the discharge-side protruded pipe 28B of the present embodiment are formed integrally with the housing 21. The suction-side projecting tube 28A and the discharge-side projecting tube 28B extend downward from the lower end of the housing 21 in the vertical direction Dv. The suction-side protruded pipe 28A and the discharge-side protruded pipe 28B communicate the inside and outside of the housing 21. The interior of the suction-side protruded pipe 28A communicates with the suction port 291. The suction-side protruded pipe 28A is formed in a shape that can be inserted into the suction port 12. Specifically, the suction-side protruded pipe 28A has a shape such that the outer peripheral surface thereof slides in contact with the inner peripheral surface of the suction port 12 when moving in the vertical direction Dv. The discharge-side protruded pipe 28B communicates with the discharge port 293. The discharge-side protruded pipe 28B is formed in a shape that can be inserted into the discharge port 13. Specifically, the discharge-side protruded pipe 28B has a shape such that the outer peripheral surface thereof is in sliding contact with the inner peripheral surface of the discharge port 13 when moving in the vertical direction Dv.

As shown in fig. 1, an annular suction-side seal member (seal member) 30A is provided between the inner peripheral surface of the suction port 12 and the outer peripheral surface of the suction-side protruding tube 28A. The suction-side sealing member 30A seals between the suction port 12 and the suction-side protruding pipe 28A. Suction-side seal member 30A is, for example, an O-ring fixed to the outer peripheral surface of suction-side protruding pipe 28A.

An annular discharge-side sealing member (sealing member) 30B is provided between the inner peripheral surface of the discharge port 13 and the outer peripheral surface of the discharge-side protruded pipe 28B. The discharge-side sealing member 30B seals between the discharge port 13 and the discharge-side protruded pipe 28B. The discharge-side sealing member 30B is, for example, an O-ring fixed to the outer peripheral surface of the discharge-side protruding pipe 28B.

As shown in fig. 3, in the compressor body 20, the lower surface of the housing 21 facing downward in the vertical direction Dv is supported on the support surface 11f by fitting the lower portion of the housing 21 into the recess 14 of the base 10.

The coupling portion 40 detachably couples the compressor body 20 and the base 10. The compressor body 20 connects the first flange portion 26A and the first receiving portion 16A, and the second flange portion 26B and the second receiving portion 16B, respectively. The first flange portion 26A and the first receiving portion 16A, and the second flange portion 26B and the second receiving portion 16B are fixed by a plurality of bolts 41 as the connecting portions 40, respectively.

As shown in fig. 1, in the compressor body 20, as flow paths through which the process gas flows, a suction port 291, a plurality of casing flow paths 292, and a discharge port 293 are formed in this order from one side (first side) in the axial direction Da, that is, the upstream side. The suction port 291, the plurality of casing flow paths 292, and the discharge port 293 are defined by the diaphragm 25 and the head 27.

The suction port 291 allows the process gas, which has flowed from the outside through the suction-side protruded pipe 28A from the suction port 12, to flow into the casing flow passage 292 inside the diaphragm 25. The suction port 291 allows the process gas to flow into the most upstream impeller 232. The suction port 291 may be provided with, for example, an inlet guide vane.

The housing flow path 292 is formed within the diaphragm 25. The casing passage 292 supplies the process gas from the suction port 291 to the most upstream impeller 232, supplies the process gas discharged from the upstream impeller 232 to the downstream impeller 232, or supplies the process gas discharged from the most downstream impeller 232 to the discharge port 293.

The exhaust port 293 exhausts the process gas flowing through the inside of the diaphragm 25 from the exhaust-side protruded pipe 28B to the outside through the exhaust port 13. The exhaust port 293 discharges the process gas discharged from the most downstream impeller 232 to the outside.

Next, a maintenance method for the compressor 1 according to the present embodiment will be described. Fig. 4 is a flowchart showing a flow of a maintenance method of a compressor according to an embodiment of the present invention. Fig. 5 is a side view schematically showing a state where the compressor main body is detached from the base in the compressor according to the embodiment of the present invention.

As shown in fig. 4, the maintenance method of the compressor 1 according to the present embodiment includes a connection releasing step S1, a compressor body removing step S2, a compressor body mounting step S3, and a connecting step S4.

In the coupling releasing step S1, the coupling of the coupling portion 40 to the compressor main body 20 and the base 10 is released. Specifically, the bolts 41 are respectively pulled out of the first flange portion 26A and the first receiving portion 16A, and the second flange portion 26B and the second receiving portion 16B.

In the compressor main body removing step S2, as shown in fig. 5, the compressor main body 20 is lifted by a crane device or the like and removed from the base 10. Thereby, only the base 10 remains on the base F of the compressor 1. The compressor body 20 detached from the base 10 is mounted on a container, a trailer, or the like, and is transported to a factory or the like where maintenance work of the compressor body 20 is performed.

In the compressor main body mounting step S3, the compressor main body 20 subjected to maintenance is hung from above by a crane device or the like and is mounted on the support surface 11f of the base 10. At this time, the lower portion of the casing 21 of the compressor main body 20 is inserted into the recess 14. The suction-side projecting pipe 28A of the compressor body 20 is inserted into the suction port 12 and the discharge-side projecting pipe 28B is inserted into the discharge port 13 from above, respectively. Thereafter, the first flange portion 26A is placed on the first receiving portion 16A, and the second flange portion 26B is placed on the second receiving portion 16B.

In the compressor main body mounting step S3, the compressor main body 20 subjected to maintenance and mounted on the base 10 is preferably a spare compressor main body 20 different from the compressor main body 20 removed in the compressor main body removing step S2. The spare compressor body 20 is a compressor body that has been subjected to a predetermined maintenance operation in a factory or the like in advance, or a newly manufactured compressor body. This can shorten the time interval between the compressor main body removing step S2 and the compressor main body placing step S3.

After a predetermined maintenance operation is performed in a factory or the like on the compressor body 20 removed in the compressor body removing step S2, the compressor body may be carried to the installation site of the compressor 1 by being mounted on a container, a trailer, or the like again, and mounted on the base 10 in the compressor body mounting step S3.

In the coupling step S4, as shown in fig. 3, the compressor main body 20 and the base 10 are coupled to each other by the coupling portion 40. In this step, the first flange portion 26A and the first receiving portion 16A, and the second flange portion 26B and the second receiving portion 16B are fixed by the plurality of bolts 41, respectively. Thereby, the maintenance of the compressor 1 is ended.

According to the compressor 1 as described above, the compressor main body 20 is supported on the support surface 11F of the base 10 fixed to the base F. Therefore, at the time of maintenance, the compressor body 20 can be directly detached from the base 10 by being lifted from the support surface 11f of the base 10. Thus, when the compressor body 20 is removed, it is not necessary to remove other members such as the upper half casing from the compressor body or to move the compressor body 20 in the horizontal direction. As a result, the space required for maintenance can be reduced around the compressor 1. Further, since the compressor body 20 detached from the base 10 includes the cylindrical housing 21, handling such as transportation can be easily performed. As a result, the compressor body 20 can be subjected to maintenance work in a factory different from the installation location. When the suction-side protruded pipe 28A and the discharge-side protruded pipe 28B are inserted into the suction port 12 and the discharge port 13 when the compressor main body 20 is attached to the base 10, the flow path of the process gas compressed in the compressor main body 20 is connected to the base F side. Therefore, the compressor can be used after maintenance without performing a complicated connecting operation with respect to the base F. This can improve the maintainability of the compressor 1.

Further, the suction-side seal member 30A and the discharge-side seal member 30B can suppress leakage of the process gas from between the suction-side protruded pipe 28A and the suction port 12 and between the discharge-side protruded pipe 28B and the discharge port 13.

When the compressor body 20 is placed on the base 10, the lower portion of the casing 21 of the compressor body 20 is fitted into the recessed portion 14, whereby the horizontal direction Dh perpendicular to the axial direction Da can be positioned. Therefore, the compressor body 20 can be easily positioned with respect to the base 10.

Further, the first flange portion 26A is placed on the first receiving portion 16A, and the second flange portion 26B is placed on the second receiving portion 16B, whereby the compressor body 20 can be positioned in the vertical direction Dv with respect to the base 10. That is, the alignment adjustment of the compressor main body 20 with respect to the base F can be easily performed.

Although the embodiments of the present invention have been described above with reference to the drawings, the configurations and combinations thereof in the embodiments are merely examples, and additions, omissions, substitutions, and other modifications of the configurations can be made without departing from the spirit of the present invention. The present invention is not limited by the embodiments, but is limited only by the technical contents.

For example, the recess 14 and the support surface 11f of the base 10 are formed in a semicircular arc shape, but the present invention is not limited thereto. The concave portion 14 and the support surface 11f may have any shape as long as they are formed in a shape corresponding to the shape of the lower portion of the compressor body 20. For example, if the lower portion (lower surface) of the compressor body 20 is planar, the support surface 11f may be planar so as to face the lower portion of the compressor body 20. In this case, the recess 14 may not be formed.

The structure of the compressor body 20 is not limited to any particular one, and can be modified as appropriate. For example, the housing 21 may be divided into two upper and lower portions in the vertical direction Dv.

The connection pipe is not limited to the suction port 12 and the discharge port 13 as in the present embodiment, and another pipe through which the fluid flowing inside the compressor body 20 flows may be provided as the connection pipe corresponding to the protruding pipe provided in the compressor body 20. For example, when the compressor body 20 is of a suction type, a pipe for suction may be provided as the connection pipe.

Industrial applicability

According to the present invention, the maintainability of the compressor can be improved.