CN216768351U - Split type high pressure positive blower carbon ring mechanical seal - Google Patents

Split type high pressure positive blower carbon ring mechanical seal Download PDF

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Publication number
CN216768351U
CN216768351U CN202220015350.5U CN202220015350U CN216768351U CN 216768351 U CN216768351 U CN 216768351U CN 202220015350 U CN202220015350 U CN 202220015350U CN 216768351 U CN216768351 U CN 216768351U
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carbon ring
carbon
seat
ring
ring seat
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CN202220015350.5U
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Chinese (zh)
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夏灏
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Zhejiang Cardiff Intelligent Technology Co ltd
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Zhejiang Cardiff Intelligent Technology Co ltd
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Abstract

The utility model discloses a split type high-pressure fan carbon ring mechanical seal which comprises an end cover, a plurality of carbon rings and a shaft sleeve, wherein the end cover is provided with a plurality of carbon rings; the outer wall of the shaft sleeve is abutted to the inner rings of the plurality of carbon rings, the plurality of carbon rings are respectively a first carbon ring, a second carbon ring, a third carbon ring and a fourth carbon ring, the first carbon ring, the second carbon ring, the third carbon ring and the fourth carbon ring are coaxially arranged, and the first carbon ring and the second carbon ring are respectively arranged at the upper end and the lower end of the first carbon ring seat; the third carbon ring is arranged at the upper end of the third carbon ring seat, and the fourth carbon ring is arranged at the upper end of the fourth carbon ring seat; the end cover, the first carbon ring seat, the third carbon ring seat and the fourth carbon ring seat are sequentially arranged from top to bottom, and an air inlet ring is arranged between the first carbon ring seat and the third carbon ring seat; the carbon ring mechanical sealing device greatly improves the sealing performance, thereby preventing accidents caused by the outward leakage of the sealed gas.

Description

Split type high pressure positive blower carbon ring mechanical seal
Technical Field
The utility model relates to a mechanical seal, in particular to a split type high-pressure fan carbon ring mechanical seal.
Background
The carbon ring seal belongs to one of floating seals, and is named because the material of the seal ring is carbon graphite. The sealing principle is that the sealing ring is contacted with the rotating shaft, so that leakage is prevented. An annular groove is arranged in a cavity of the sealing main body, an annular graphite sealing ring is arranged in the annular groove, and a gap of 0.01-0.04 mm is formed between the inner diameter of the graphite sealing ring and the rotating shaft (or the shaft sleeve). The carbon ring seal has the advantages of simple structure, convenient maintenance and wide application range, simultaneously realizes zero leakage of toxic gas media by injecting isolating gas (such as nitrogen) into the gap, has the advantages of low cost and low maintenance cost compared with other seal products, and is widely applied to units such as steam turbines, fans, generators, compressors, turbines and the like in the field of petrochemical industry.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a split type high-pressure fan carbon ring mechanical seal to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
the split type high-pressure fan carbon ring mechanical seal comprises an end cover, a plurality of carbon rings and a shaft sleeve; the outer wall of the shaft sleeve is abutted to the inner rings of the plurality of carbon rings, the plurality of carbon rings are respectively a first carbon ring, a second carbon ring, a third carbon ring and a fourth carbon ring, the first carbon ring, the second carbon ring, the third carbon ring and the fourth carbon ring are coaxially arranged, and the first carbon ring and the second carbon ring are respectively arranged at the upper end and the lower end of the first carbon ring seat; the third carbon ring is arranged at the upper end of the third carbon ring seat, and the fourth carbon ring is arranged at the upper end of the fourth carbon ring seat; the end cover, the first carbon ring seat, the third carbon ring seat and the fourth carbon ring seat are sequentially arranged from top to bottom, and an air inlet ring is arranged between the first carbon ring seat and the third carbon ring seat; the end cover, the first carbon ring seat and the air inlet ring are fixedly connected through a second screw; the side wall of the air inlet ring is provided with an air inlet, a sealing cavity is arranged between the air inlet ring and the outer wall of the shaft sleeve, isolation gas is filled in the sealing cavity, and the pressure of the isolation gas is greater than that of the sealed gas.
Furthermore, the upper end and the lower end of the first carbon ring seat are respectively provided with an annular groove for installing the first carbon ring and the second carbon ring, and the upper ends of the third carbon ring seat and the fourth carbon ring seat are respectively provided with an annular groove for installing the third carbon ring and the fourth carbon ring.
Further, the first carbon ring, the second carbon ring, the third carbon ring and the fourth carbon ring are all composed of a plurality of split carbon ring pieces; elastic pieces are sleeved on the excircles of the first carbon ring, the second carbon ring, the third carbon ring and the fourth carbon ring, and the elastic pieces are springs;
furthermore, sealing rings are arranged among adjacent parts among the end cover, the first carbon ring seat, the air inlet ring, the third carbon ring seat and the fourth carbon ring seat.
Furthermore, the first carbon ring and the second carbon ring are fixedly connected with the first carbon ring seat through a stop piece so as to prevent the carbon rings from rotating along with the shaft sleeve; the third carbon ring and the fourth carbon ring are connected with the third carbon ring seat and the fourth carbon ring seat through the stop pieces, so that the carbon ring is prevented from rotating along with the shaft sleeve.
Compared with the prior art, the utility model has the beneficial effects that: the plurality of carbon ring seats of the split piece are adopted, so that the installation of a plurality of carbon rings is facilitated; the carbon ring mechanical sealing device greatly improves the sealing performance, thereby preventing accidents caused by the outward leakage of the sealed gas.
Drawings
Fig. 1 is a structural schematic diagram of a split type high pressure fan carbon ring mechanical seal.
Fig. 2 is a schematic structural diagram of a first carbon ring in the split type high pressure fan carbon ring mechanical seal.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the split type high pressure fan carbon ring mechanical seal includes an end cap 1, a plurality of carbon rings and a shaft sleeve 2; the outer wall of the shaft sleeve 2 is abutted with the inner rings of a plurality of carbon rings, the plurality of carbon rings are respectively a first carbon ring 3, a second carbon ring 4, a third carbon ring 5 and a fourth carbon ring 6, the first carbon ring 3, the second carbon ring 4, the third carbon ring 5 and the fourth carbon ring 6 are coaxially arranged,
the first carbon ring 3 and the second carbon ring 4 are respectively arranged at the upper end and the lower end of the first carbon ring seat 7, the second carbon ring seat is not arranged, and the first carbon ring seat 7 plays a role in installing the first carbon ring 3 and the second carbon ring 4; the third carbon ring 5 is arranged at the upper end of the third carbon ring seat 8, and the fourth carbon ring 6 is arranged at the upper end of the fourth carbon ring seat 9; the end cover 1, the first carbon ring seat 7, the third carbon ring seat 8 and the fourth carbon ring seat 9 are sequentially arranged from top to bottom, and an air inlet ring 10 is arranged between the first carbon ring seat 7 and the third carbon ring seat 8; the air inlet ring 10, the third carbon ring seat 8 and the fourth carbon ring seat 9 are fixedly connected through a first screw 11, and the end cover 1, the first carbon ring seat 7 and the air inlet ring 10 are fixedly connected through a second screw 16;
the side wall of the air inlet ring 10 is provided with an air inlet 13, a sealing cavity 14 is formed between the air inlet ring 10 and the outer wall of the shaft sleeve 2, isolation gas is filled in the sealing cavity 14, and the pressure of the isolation gas is greater than that of the sealed gas;
when the sealing device works, the shaft sleeve 2 rotates along with the main shaft, the end cover and the plurality of carbon rings are static parts, and isolation gas needs to be continuously introduced into the sealing cavity 4;
furthermore, the upper end and the lower end of the first carbon ring seat 7 are respectively provided with an annular groove for installing the first carbon ring 3 and the second carbon ring 4, and the upper ends of the third carbon ring seat 8 and the fourth carbon ring seat 9 are respectively provided with an annular groove for installing the third carbon ring 5 and the fourth carbon ring 6;
further, the first carbon ring 3, the second carbon ring 4, the third carbon ring 5 and the fourth carbon ring 6 are all composed of a plurality of split carbon ring pieces; elastic pieces 12 are sleeved on the outer circles of the first carbon ring 3, the second carbon ring 4, the third carbon ring 5 and the fourth carbon ring 6, and the elastic pieces 12 are springs;
further, sealing rings are arranged among adjacent parts among the end cover 1, the first carbon ring seat 7, the air inlet ring 10, the third carbon ring seat 8 and the fourth carbon ring seat 9.
Further, the first carbon ring 3 and the second carbon ring 4 are both fixedly connected with the first carbon ring seat 7 through a stop piece 13 so as to prevent the carbon rings from rotating along with the shaft sleeve 2; the third carbon ring 5 and the fourth carbon ring 6 are connected with the third carbon ring seat 8 and the fourth carbon ring seat 9 through the stop piece 13, so that the carbon rings are prevented from rotating along with the shaft sleeve 2.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the equipment or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is also to be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Claims (5)

1. The split type high-pressure fan carbon ring mechanical seal comprises an end cover, a plurality of carbon rings and a shaft sleeve; the bearing is characterized in that the outer wall of the shaft sleeve is abutted with inner rings of a plurality of carbon rings, the plurality of carbon rings are respectively a first carbon ring, a second carbon ring, a third carbon ring and a fourth carbon ring, the first carbon ring, the second carbon ring, the third carbon ring and the fourth carbon ring are coaxially arranged, and the first carbon ring and the second carbon ring are respectively arranged at the upper end and the lower end of the first carbon ring seat; the third carbon ring is arranged at the upper end of the third carbon ring seat, and the fourth carbon ring is arranged at the upper end of the fourth carbon ring seat; the end cover, the first carbon ring seat, the third carbon ring seat and the fourth carbon ring seat are sequentially arranged from top to bottom, and an air inlet ring is arranged between the first carbon ring seat and the third carbon ring seat; the end cover, the first carbon ring seat and the air inlet ring are fixedly connected through a second screw; the side wall of the air inlet ring is provided with an air inlet, a sealing cavity is arranged between the air inlet ring and the outer wall of the shaft sleeve, isolation gas is filled in the sealing cavity, and the pressure of the isolation gas is greater than that of the sealed gas.
2. The split type high pressure fan carbon ring mechanical seal as claimed in claim 1, wherein the upper and lower ends of the first carbon ring seat are respectively provided with an annular groove for installing the first carbon ring and the second carbon ring, and the upper ends of the third carbon ring seat and the fourth carbon ring seat are respectively provided with an annular groove for installing the third carbon ring and the fourth carbon ring.
3. The split high pressure fan carbon ring mechanical seal of claim 1, wherein the first carbon ring, the second carbon ring, the third carbon ring and the fourth carbon ring are all composed of a plurality of split carbon ring members; elastic parts are sleeved on the excircles of the first carbon ring, the second carbon ring, the third carbon ring and the fourth carbon ring, and the elastic parts are springs.
4. The split high pressure fan carbon ring mechanical seal of claim 1, wherein a seal ring is disposed between adjacent components between the end cap, the first carbon ring seat, the inlet ring, the third carbon ring seat and the fourth carbon ring seat.
5. The split high pressure fan carbon ring mechanical seal according to claim 1, wherein the first carbon ring and the second carbon ring are both fixedly connected with the first carbon ring seat through a stop piece to prevent the carbon rings from rotating along with the shaft sleeve; the third carbon ring and the fourth carbon ring are connected with the third carbon ring seat and the fourth carbon ring seat through the stop pieces, so that the carbon ring is prevented from rotating along with the shaft sleeve.
CN202220015350.5U 2022-01-05 2022-01-05 Split type high pressure positive blower carbon ring mechanical seal Active CN216768351U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220015350.5U CN216768351U (en) 2022-01-05 2022-01-05 Split type high pressure positive blower carbon ring mechanical seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220015350.5U CN216768351U (en) 2022-01-05 2022-01-05 Split type high pressure positive blower carbon ring mechanical seal

Publications (1)

Publication Number Publication Date
CN216768351U true CN216768351U (en) 2022-06-17

Family

ID=81976192

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220015350.5U Active CN216768351U (en) 2022-01-05 2022-01-05 Split type high pressure positive blower carbon ring mechanical seal

Country Status (1)

Country Link
CN (1) CN216768351U (en)

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