TWM564090U - Compressor device having modulized sealing structure - Google Patents

Abstract

A compressor device utilized one or more floating ring seats to contain therein one or more sets of floating rings in the preassembling stage where the one or more sets of floating rings along with pressure exerting springs are installed into the one or more floating ring seats in advance before these modulized sealing structures including the floating rings and seats are sleeved on the shaft of the rotator. Additional floating rings and springs may also be added and sleeved on the shaft outside the floating ring seat(s).

Description

Compressor device with modular sealing structure

The present invention relates to a compressor device, and more particularly to a compressor device having a modular sealing structure.

In the current dry compressor, gas is sent from the low-pressure end of the rotor to the rotor and compressed into high-pressure gas, and the high-pressure end side of the rotor must be disposed between the rotor core and the chamber in order to avoid leakage of high-pressure gas. Multi-channel sealing structure. The conventionally used sealing structure is a combination of a floating ring and a spring, which generates a dynamic seal through a floating ring, and a spring disposed on one side of the floating ring is used to press and fix the floating ring. Due to the slight gap between the floating ring and the rotor mandrel, a gas seal is formed when the rotor mandrel rotates at a high speed. Generally, in order to enhance the sealing effect, a plurality of floating rings and a combination of springs are usually used, that is, the floating ring, the spring, the floating ring, the spring, etc. are assembled one by one on the rotor mandrel, and finally the seat is fixed. .

However, in the process of manually setting the parts one by one on the rotor mandrel, since the inside of the rotor mandrel is deep, when the floating ring is assembled, an additional force is required to compress the spring therein, and the floating ring is assembled in the rotor core. The shaft must also maintain its center of alignment with the center of the shaft (so that there is a uniform gap between the floating ring and the rotor core), which increases assembly difficulties and makes assembly accuracy difficult.

Therefore, the present invention provides a modular sealing structure that is applied to a compressor unit to solve the above problems.

An embodiment of the present invention provides a compressor apparatus having a modular sealing structure including a housing, a rotor, a first floating ring set, a floating ring seat, and a spiral seal. The rotor is disposed within the housing, the rotor having a mandrel that forms a sealed chamber with the housing. The first floating ring set is embedded in the floating ring seat, and the floating ring seat is sleeved on the mandrel and located in the sealing chamber. The spiral seal sleeve is disposed on the mandrel and abuts against the float ring seat, and the float ring seat is axially clamped and fixed between the casing and the spiral seal.

In the embodiment provided by the present invention, the first floating ring set includes a floating ring and an elastic member disposed in an inner cavity of the floating ring seat, the elastic member abuts the floating ring to fix the floating ring to the floating ring A dynamic seal is formed in the inner chamber and in the sealed chamber.

In the embodiment provided by the present invention, the first floating ring set includes two floating rings and an elastic member respectively abutting the two floating rings to fix the two floating rings in the inner cavity.

In the embodiment provided by the present invention, the circumferential side of the floating ring seat has a notch communicating with the inner cavity, and the first floating ring set is radially inserted into the inner cavity by the notch to be embedded in the floating ring seat. .

In the embodiment provided by the present invention, the floating ring is made of metal such as steel, stainless steel or alloy or polytetrafluoroethylene (PTFE), fluorinated ethylene propylene copolymer (FEP), perfluoroalkylate (PFA). It is made of a polymer such as ethylene or tetrafluoroethylene copolymer (ETFE) or polyetheretherketone (PEEK).

In the embodiment provided by the present invention, the elastic member is a wave spring or a disc spring.

In the embodiment provided by the present invention, wherein the floating ring seat has at least two mutually independent inner cavities, the compressor device comprises at least two first floating ring sets respectively embedded in the at least two inner cavities mounted to the floating ring seat.

In the embodiment provided by the present invention, the compressor device includes at least two floating ring seats and at least two first floating ring groups respectively embedded in the interior of the at least two floating ring seats, the at least two floating rings The seat is sleeved on the mandrel and located in the sealed chamber.

In the embodiment provided by the present invention, the compressor device further includes a second floating ring set sleeved on the mandrel and located in the sealed chamber, and axially disposed between the floating ring seat and the housing.

In the embodiment provided by the present invention, the second floating ring set includes a floating ring and an elastic member, the elastic member abuts the floating ring to fix the floating ring in the sealed chamber and in the sealed chamber. Form a dynamic seal.

In the embodiment provided by the present invention, the second floating ring set includes two floating rings and an elastic member respectively abutting the two floating rings to fix the two floating rings in the sealed chamber.

In the embodiment provided by the present invention, the compressor device further includes a plurality of O-rings respectively disposed on the periphery of the floating ring seat and the periphery of the spiral seal, and the plurality of O-rings form a static seal in the sealed chamber. .

In the embodiment provided by the present invention, the compressor device further includes a fixing block disposed between the floating ring seat and the spiral seal.

In the embodiment provided by the present invention, the compressor device further includes a bearing for carrying the mandrel of the rotor, the bearing is sleeved on the mandrel and axially disposed on the spiral seal relative to the floating ring seat. The other side.

The compressor device of the modular sealing structure provided by the present invention utilizes one or more sets of floating ring sets to be pre-assembled into the floating ring seat, and then the floating ring seat with the floating ring set is mounted on the mandrel, and the improved floating ring is utilized. The seat design simplifies the installation process and reduces the difficulty and complexity of installation.

Certain terms are used throughout the description and following claims to refer to particular elements. Those of ordinary skill in the art should understand that a manufacturer may refer to the same component by a different noun. The scope of this specification and the subsequent patent application do not use the difference of the names as the means for distinguishing the elements, but the difference in function of the elements as the criterion for distinguishing. The term "including" as used throughout the specification and subsequent claims is an open term and should be interpreted as "including but not limited to". In addition, the term "coupled" or "connected" is used herein to include any direct and indirect electrical or structural means of connection. Therefore, if a first device is coupled/connected to a second device, it means that the first device can be directly electrically/structuredly connected to the second device, or indirectly electrically/structured through other devices or connection means. To the second device.

Please refer to FIG. 1 , FIG. 2 and FIG. 3 . FIG. 1 is a schematic view showing one embodiment of the compressor device of the present invention, and FIG. 2 is a schematic view showing the explosion of each component of the compressor device of FIG. 1 . Fig. 3 is a schematic cross-sectional view showing the compressor unit of Fig. 2. The compressor device 100 includes a casing 1, two rotors 2, two floating ring seats 3, two spiral seals 4, two bearings 5, two first floating ring groups 6, and two second floating ring groups 7. The rotor 2 is disposed in the casing 1, and the gas A is introduced into the compressor unit 100 by the low pressure end L (intake end) on the left side of the rotor 2, and is compressed into a compressed gas, and then sent out from the high pressure end H (exhaust end) on the right side of the rotor 2. . Since the pressure of the compressed gas at the high pressure end H of the right side of the rotor 2 is high, it is necessary to prevent the compressed gas from leaking along the rotating shaft (the mandrel 21) of the rotor 2. A sealing chamber I2 is formed between the mandrel 21 and the casing 1. The floating ring seat 3 is sleeved on the mandrel 21 and located in the sealing chamber I2. The spiral seal 4 is also sleeved on the mandrel 21 and abuts against the floating ring seat 3. The float ring seat 3 is axially clamped and fixed between the housing 1 and the spiral seal 4. On the other hand, the bearing 5 is used to carry the mandrel 21 of the rotor 2, is sleeved on the mandrel 21 and axially disposed on the other side of the spiral seal 4 opposite the floating ring seat 3. If the compressor device 100 is in the form of an oil-free compressor, it is also necessary to prevent the lubricating oil at the bearing 5 from entering the compression chamber I1 between the rotor 2 and the casing 1 and destroying the oil-free environment of the compression chamber I1, thus A sealing structure of the compressor device 100 is provided at the high pressure end H of the compressor device 100. In the embodiment of the present invention, the sealing performed by the spiral seal 4 prevents the lubricating oil from entering the compression chamber I1, and the modular floating ring seat 3 (including the first floating ring group 6) plus the second floating ring group 7 is formed. The sealing structure reduces the leakage of compressed gas to the lubricating oil chamber (not shown) for sealing purposes.

The present invention achieves a high-pressure end sealing effect by a modular sealing structure in which a dynamic sealing is performed by one or more sets of floating ring sets. In the above embodiment, the first floating ring set 6 and the floating ring seat in the floating ring seat 3 may be included. 3 outside the second floating ring set 7. In other embodiments, the floating ring base 3 may have multiple sets of the second floating ring set 7 or the second floating ring set 7 , and the floating ring base 3 may also have multiple sets of the first floating ring set 6 or may be further configured. A plurality of floating ring seats 3 (each comprising one or more sets of first floating ring sets 6) for different degrees of hermetic sealing.

Please refer to FIG. 4 and FIG. 5. FIG. 4 is a schematic view showing a first embodiment of the modular sealing structure of the compressor device, and FIG. 5 is a schematic cross-sectional view showing the modular sealing structure of the first embodiment. In the first embodiment, the circumferential side of the floating ring base 3 has a notch 34, which communicates with an inner cavity 32. The first floating ring set 6 is radially inserted into the inner cavity 32 by the notch 34 to be embedded and mounted on the floating ring seat 3. internal. In one embodiment, the first floating ring set 6 can include two floating rings 61, 63 and an elastic member 65 disposed between the two floating rings 61, 63. Before the floating ring seat 3 is not installed on the mandrel 21, the elastic member 65 of the first floating ring group 6 can be pre-pressed to mount the first floating ring group 6 to the inner cavity 32 of the floating ring seat 3, thereby making the elastic member 65 abuts the floating rings 61, 63 on both sides to axially fix the floating rings 61, 63 in the inner cavity 32 (the floating rings 61, 63 can still be adjusted in the radial direction), thus forming a modularization Sealing structure. In another embodiment, the first floating ring set 6 can also be constructed using only one floating ring and one elastic member.

The second floating ring set 7 in the first embodiment also includes two floating rings 71, 73 and an elastic member 75 disposed between the two floating rings 71, 73. Before the floating ring seat 3 is not installed on the mandrel 21, the second floating ring group 7 is sleeved on the mandrel 21 and located in the sealed chamber I2 (refer to FIG. 2, the same below), and then modularized. When the floating ring seat 3 is sleeved on the mandrel 21, the second floating ring set 7 is axially disposed between the floating ring seat 3 and the casing 1, and is further biased inwardly through the floating ring seat 3 to press the second floating ring set 7 The elastic member 75 is such that the elastic member 75 abuts the floating rings 71, 73 on both sides to fix the floating rings 71, 73 in the sealed chamber I2 between the floating ring seat 3 and the casing 1. In another embodiment, the second floating ring set 7 can also be constructed using only one floating ring and one elastic member.

The floating rings 61, 63, 71, 73 of the first floating ring group 6 and the second floating ring group 7 have a slight gap between the mandrel 21 and the mandrel 21, and a gas seal can be formed when the mandrel 21 of the rotor 2 rotates at a high speed. Dynamic seal. Further, the compressor device 100 of the present invention additionally includes a plurality of O-rings, and in the embodiment of Fig. 5, O-rings 91, 92. The O-ring 91 is sleeved on the periphery of the floating ring seat 3, and the O-ring 92 is sleeved on the periphery of the spiral seal 4 to form a static seal in the sealed chamber I2. The compressor device 100 additionally includes a fixing block 41 disposed between the floating ring seat 3 and the spiral seal 4. In addition, in the embodiment of the present invention, the floating rings 61, 63, 71, 73 may be made of metal such as steel, stainless steel or alloy or polytetrafluoroethylene (PTFE) or fluorinated ethylene propylene copolymer (FEP). ), a polymer material such as a perfluoroalkylate (PFA), a copolymer of ethylene and tetrafluoroethylene (ETFE) or polyetheretherketone (PEEK), and the elastic members 65, 75 may be wave springs or discs. spring.

Please refer to FIG. 6. FIG. 6 is a schematic cross-sectional view showing a second embodiment of the modular sealing structure of the compressor device. The float ring of the present invention can have at least two mutually independent inner cavities to accommodate a plurality of sets of first floating rings. For example, in the second embodiment, the float ring seat 3' has three inner cavities 32 that are respectively fitted with a set of first floating rings 6 to form more laminar dynamic seals.

Please refer to FIG. 7. FIG. 7 is a cross-sectional view showing a third embodiment of the modular sealing structure of the compressor device. The compressor device of the present invention can further be provided with a plurality of floating ring seats for sequentially assembling on the mandrel. For example, in the third embodiment, two floating ring seats 3 are included, respectively, and a first floating ring 6 is embedded, and the specific structure of the third embodiment of FIG. 7 is the innermost side (ie, the one closest to the rotor 2). The first side begins to sequentially sleeve a second floating ring set 7, a floating ring seat 3 (including a first floating ring set 6), a second floating ring set 7 and a floating ring seat 3 (including a first floating ring set 6), and then It is a spiral seal 4 and a bearing 5, so that a plurality of floating ring seats 3 and a combination of floating ring sets can also form a multilayer dynamic seal. In addition, in the embodiments of the above figures, the compressor device 100 is further connected to the air chamber through the air passages 81, 82, and in each of the embodiments, the air passages 81, 82 are disposed on the outermost axial floating ring. After that, that is, when the high-pressure compressed gas leaks from the shaft 21, the leaked gas is blocked by the dynamic seal of the floating ring, and the pressure is also reduced until the last floating ring (that is, each sectional view) The rightmost floating ring 63, the pressure of the leakage gas is relatively reduced a lot, and the air passages 81, 82 leading to the atmospheric chamber can serve as a passage for the residual low-pressure leakage gas to flow out. Further, in an embodiment, when the atmospheric chamber When a high pressure condition is formed, high pressure air flows from the air passages 81, 82 to the float ring seat 3, which forces the lubricating oil to move toward the bearing 5. The single or multiple float ring seats 3 that have been provided prevent the lubricating oil from entering the compression chamber while compressing the chamber I1 ( The water vapor as shown in Fig. 3 cannot flow to the bearing 5, and the problem of leakage can be further improved.

The compressor device of the present invention utilizes one or more sets of floating ring sets in the floating ring seat to pre-assemble one or more floating rings and springs for pressing the floating ring into one or more floating ring seats in a pre-assembled manner. Then, one modular floating ring seat sleeve is assembled on the mandrel of the rotor, and one or more floating rings and springs are additionally added outside the floating ring seat according to requirements. By modularizing the floating ring seat and the floating ring, which is mainly used as a dynamic seal, the compressor installation process is simplified, and the difficulty and complexity of installation are reduced.

1‧‧‧shell
2‧‧‧Rotor
3, 3'‧‧‧ floating ring seat
4‧‧‧Spiral seal
5‧‧‧ bearing
6‧‧‧First floating ring group
7‧‧‧Second floating ring group
21‧‧‧ mandrel
32‧‧‧ Inside cavity
34‧‧‧ gap
41‧‧‧Fixed blocks
61, 63, 71, 73‧‧‧ floating ring
65, 75‧‧‧Flexible parts
81, 82‧‧‧ airway
91, 92‧‧‧O-ring
100‧‧‧Compressor unit
L‧‧‧Low end
H‧‧‧High end
I1‧‧‧Compression chamber
I2‧‧‧ sealed chamber
A‧‧‧ gas

Figure 1 is a schematic illustration of one embodiment of a compressor apparatus of the present invention. Fig. 2 is a schematic exploded view of the components of the compressor unit of Fig. 1. Fig. 3 is a schematic cross-sectional view showing the compressor unit of Fig. 2. Figure 4 is a schematic illustration of a first embodiment of a modular sealing structure of a compressor assembly. Fig. 5 is a schematic cross-sectional view showing the modular sealing structure of the first embodiment. Figure 6 is a schematic cross-sectional view showing a second embodiment of the modular sealing structure of the compressor unit. Figure 7 is a schematic cross-sectional view showing a third embodiment of the modular sealing structure of the compressor unit.

Claims (16)

A compressor device having a modular sealing structure, comprising: a casing; a rotor disposed in the casing, the rotor having a mandrel, the mandrel forming a sealed chamber with the casing; a first floating ring set; the first floating ring set is embedded in the floating ring seat, the floating ring seat is sleeved on the mandrel and located in the sealing chamber; and a spiral seal is sleeved on the mandrel and Abutting the floating ring seat, the floating ring seat is axially clamped and fixed between the housing and the spiral seal. The compressor device of claim 1, wherein the first floating ring group comprises a floating ring and an elastic member disposed in an inner cavity of the floating ring seat, the elastic member abuts the floating ring to fix the floating ring A dynamic seal is formed in the inner chamber and in the sealed chamber. The compressor device of claim 2, wherein the first floating ring set comprises two floating rings and an elastic member, the elastic members respectively abut the two floating rings to fix the two floating rings in the inner cavity. The compressor device of claim 2, wherein a circumferential side of the floating ring seat has a notch communicating with the inner cavity, the first floating ring set being radially inserted into the inner cavity by the notch to be embedded in the floating ring seat internal. The compressor device according to claim 2, wherein the floating ring is made of a metal such as steel, stainless steel or alloy or polytetrafluoroethylene (PTFE), fluorinated ethylene propylene copolymer (FEP), or perfluoroalkylate (PFA). ), a copolymer of ethylene and tetrafluoroethylene (ETFE) or polyetheretherketone (PEEK). The compressor device of claim 2, wherein the elastic member is a wave spring or a disc spring. The compressor device of claim 1, wherein the floating ring seat has at least two independent inner cavities, the compressor device comprising at least two first floating ring sets respectively embedded in the at least two inner cavities mounted on the floating ring seat . The compressor device of claim 1, wherein the compressor device comprises at least two floating ring seats and at least two first floating ring groups, the at least two first floating ring groups being respectively embedded in the at least two floating ring seats, the at least two The floating ring seat is sleeved on the mandrel and located in the sealed chamber. The compressor device of claim 1, further comprising a second floating ring set disposed on the mandrel and located in the sealed chamber, and axially disposed between the floating ring seat and the housing. The compressor device of claim 9, wherein the second floating ring group comprises a floating ring and an elastic member, the elastic member abuts the floating ring to fix the floating ring in the sealed chamber and in the sealed cavity The interior forms a dynamic seal. The compressor device of claim 10, wherein the second floating ring set comprises two floating rings and an elastic member, the elastic members respectively abut the two floating rings to fix the two floating rings in the sealed chamber. The compressor device according to claim 10, wherein the floating ring is made of a metal such as steel, stainless steel or alloy or polytetrafluoroethylene (PTFE), fluorinated ethylene propylene copolymer (FEP) or perfluoroalkylate (PFA). ), a copolymer of ethylene and tetrafluoroethylene (ETFE) or polyetheretherketone (PEEK). The compressor device of claim 10, wherein the elastic member is a wave spring or a disc spring. The compressor device of claim 1, further comprising a plurality of O-rings respectively sleeved around the periphery of the floating ring seat and the periphery of the spiral seal, the plurality of O-rings forming a static seal in the sealed chamber. The compressor device of claim 1, further comprising a fixing block disposed between the floating ring seat and the spiral seal. The compressor device of claim 1, further comprising a bearing for carrying the mandrel of the rotor, the bearing sleeve being disposed on the mandrel and axially disposed on the other side of the spiral seal relative to the floating ring seat .