CN215763294U

CN215763294U - Novel mechanical seal for high-temperature drainage pump

Info

Publication number: CN215763294U
Application number: CN202122395379.9U
Authority: CN
Inventors: 栾俊; 张卫东; 文子强; 李滨; 尚志杰
Original assignee: Huaneng Jinan Huangtai Power Generation Co Ltd
Current assignee: Huaneng Jinan Huangtai Power Generation Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-02-08
Anticipated expiration: 2031-09-30
Also published as: DE202022104702U1

Abstract

The utility model discloses a novel mechanical seal for a high-temperature drainage pump, which comprises a seal ring A, a seal ring B, a seal ring C, a seal ring D, a base body and a support piece, wherein a nested piece is nested and installed on the outer side of the base body, a soft static ring is nested and butted between the base body and the nested piece, the inner end of the soft static ring is butted with the seal ring D, a spring is arranged between the base body and the nested piece, and the seal ring A, the seal ring B and the seal ring C are sequentially butted on the outer side of the base body to form a seal structure. The novel mechanical seal for the high-temperature drainage pump adopts a fully-closed structural component, can effectively prevent a large amount of sludge and particles in water from entering a spring cover to cause the blockage and failure of a spring, and realizes the effect of fully-closed seal protection; the spring adopts a split type soft static ring with a known brand as one of the grinding surfaces, overcomes the phenomenon of high-temperature crack of the traditional mechanical seal (graphite static ring), and realizes online maintenance without cracking the parts of the pump body in later replacement or filling.

Description

Novel mechanical seal for high-temperature drainage pump

Technical Field

The utility model relates to the technical field of drainage pumps, in particular to a novel mechanical seal for a high-temperature drainage pump.

Background

According to the feedback of a large number of markets, the problems of the traditional one-time mechanical seal used on the high-temperature drain pump of a plurality of power plants are more, such as high-temperature crack of a graphite static ring, fatigue failure of a spring, unstable quality and aging of an attached '0' ring and the like are generated occasionally;

once the damage and the leakage occur, the equipment needs to be shut down and integrally disassembled for replacement every time, thereby bringing great maintenance workload to the field; and often need whole set of change at every turn, lead to the operation maintenance cost to stay high always, and then have certain use defect.

In order to solve the problems, innovative design is urgently needed on the basis of the original sealing structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel mechanical seal for a high-temperature drainage pump, which aims to solve the problem that the prior art needs to shut down equipment and disassemble the equipment as a whole for replacement every time, so that great maintenance workload is brought to the field; and often need whole set of change each time, lead to the problem that the operation maintenance cost is high at all times.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a novel mechanical seal for high temperature hydrophobic pump, includes sealing washer A, sealing washer B, sealing washer C, sealing washer D, base member and support piece, nested piece is installed to the nested outside of base member, and nested between base member and the nested piece has soft quiet ring, the inner butt joint of soft quiet ring has sealing washer D, and is provided with the spring between base member and the nested piece, and sealing washer A, sealing washer B, sealing washer C dock the outside at the base member in proper order and form seal structure simultaneously, the inner adhesive connection of base member has the corrosion-resistant layer, and the inner wall nestification of base member installs 4 support pieces of group.

Preferably, the base member passes through sealing washer A, sealing washer B, sealing washer C and the totally enclosed type structure of sealing washer D combination, adopts totally enclosed type structure subassembly, can prevent effectively that a large amount of mud, granule in the aquatic from getting into the spring housing and leading to the spring to block up inefficacy, has realized the effect of totally closed sealed protection.

Preferably, soft quiet ring is high temperature resistant subdivision type material, and it is nested in the inside of nested as the quiet ring wear face of machine seal, and original butyl fine material upgrades to high-quality fluorine and glues the material after, can accomplish the advantage of difficult ageing, corrosion-resistant etc. long-term operation, can effectively solve the defect that current high temperature hydrophobic pump tradition machine seal is easy to damage, the maintenance volume is big, the working costs is high.

Preferably, sealing washer A, sealing washer B, sealing washer C and sealing washer D adopt high-quality fluorine to glue the material as nested inside supplementary sealed, and the synchronous layering through a plurality of sealing washers A, sealing washer B, sealing washer C and sealing washer D is sealed, but its butt joint stability of efficient increase and water-proof effects avoid appearing the phenomenon of infiltration.

Preferably, the base body passes through the spring and along the inside propulsion compensation arrangement that is as of nest, and the spring is equidistant setting along the inside of base body, and the spring has adopted multilayer dish spring as advancing device, has overcome the tired problem of effecting of traditional small spring of mechanical seal, consequently can long period operation to can online the change in later stage.

Preferably, support piece forms annular bearing structure along the inside of base member, and support piece is the HDPE strengthening rib material, and support piece through the strengthening rib material of nested butt joint when guaranteeing device stability, avoids its easy phenomenon that appears deformation.

Compared with the prior art, the utility model has the beneficial effects that: the high-temperature drainage pump is provided with a novel mechanical seal;

1. by adopting the fully-closed structural component, the spring can be effectively prevented from being blocked and losing efficacy due to the fact that a large amount of sludge and particles in water enter the spring cover, and the fully-closed sealing protection effect is achieved;

2. the spring adopts a split type soft static ring with a known brand as one of the grinding surfaces, overcomes the phenomenon of high-temperature crack of the traditional mechanical seal (graphite static ring), realizes online maintenance without cracking the parts of the pump body during later replacement or filling, and overcomes the problem of fatigue effect of the small spring of the traditional mechanical seal by adopting a plurality of layers of disc springs as a propelling device, so that the spring can run for a long period and can be replaced online at the later period;

3. after the sealing ring is upgraded from the original nitrile material to a high-quality fluorine rubber material, the advantages of difficult aging, corrosion resistance and the like in long-term operation can be achieved, and the problems that the traditional mechanical seal of the existing high-temperature drain pump is easy to damage, large in maintenance amount and high in operation cost can be effectively solved.

Drawings

FIG. 1 is a schematic cross-sectional structural view of the present invention;

FIG. 2 is a schematic side view of a substrate according to the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

FIG. 4 is a side view of the supporting member of the present invention.

In the figure: 1. a sealing ring A; 2. a seal ring B; 3. a seal ring C; 4. soft stationary ring; 5. a seal ring D; 6. a substrate; 7. nesting; 8. a spring; 9. a corrosion-resistant layer; 10. and a support member.

Detailed Description

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, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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. 1-4, the present invention provides a technical solution: a novel mechanical seal for a high-temperature hydrophobic pump comprises a seal ring A1, a seal ring B2, a seal ring C3, a soft static ring 4, a seal ring D5, a base body 6, a nesting piece 7, a spring 8, an anti-corrosion layer 9 and a support piece 10;

nested 7 is nested and installed on the outer side of the base body 6, the soft static ring 4 is nested and butted between the base body 6 and the nested 7, the sealing ring D5 is butted at the inner end of the soft static ring 4, the spring 8 is arranged between the base body 6 and the nested 7, meanwhile, the sealing ring A1, the sealing ring B2 and the sealing ring C3 are sequentially butted on the outer side of the base body 6 to form a sealing structure, the corrosion-resistant layer 9 is connected to the inner end of the base body 6 in an adhering mode, and 4 groups of supporting pieces 10 are nested and installed on the inner wall of the base body 6.

The base body 6 is combined into a fully-closed structure through a sealing ring A1, a sealing ring B2, a sealing ring C3 and a sealing ring D5. The soft static ring 4 is made of high-temperature-resistant profile materials and is used as a machine seal static ring grinding surface to be nested in the nesting piece 7. And the sealing ring A1, the sealing ring B2, the sealing ring C3 and the sealing ring D5 are made of high-quality fluorine rubber materials and used for auxiliary sealing inside the nesting piece 7. The base 6 acts as a thrust compensation device along the inside of the nest 7 by means of springs 8, and the springs 8 are arranged at equal intervals along the inside of the base 6.

After the sealing ring A1, the sealing ring B2, the sealing ring C3 and the sealing ring D5 are upgraded from the original nitrile material to a high-quality fluorine rubber material, the advantages of difficult aging, corrosion resistance and the like in long-term operation can be achieved, and the problems that the traditional mechanical seal of the existing high-temperature drain pump is easy to damage, large in maintenance amount and high in operation cost can be effectively solved.

The spring 8 has adopted the subdivision type soft quiet ring of well-known brand as one of them mill face, has overcome the phenomenon of traditional machine seal (graphite quiet ring) high temperature crackle to later stage change or filling need not to split pump body part itself and realize online maintenance, and spring 8 has adopted the multilayer dish spring as advancing device simultaneously, has overcome the problem of the tired actual effect of traditional machine seal little spring 8, consequently can long period operation, and can change on line in later stage.

Support piece 10 forms annular bearing structure along the inside of base member 6, and support piece 10 is the HDPE strengthening rib material, and support piece 10 through the strengthening rib material of nested butt joint, when guaranteeing device stability, avoids its easy phenomenon that appears the deformation.

The working principle is as follows: when the novel mechanical seal for the high-temperature hydrophobic pump is used, according to the figures 1-4, the device is firstly placed at a position needing to work, the base body 6 is combined with a fully-closed structure through the seal ring A1, the seal ring B2, the seal ring C3 and the seal ring D5, so that the phenomenon that a large amount of sludge and particles in water enter a spring 8 cover to cause the blockage and failure of the spring 8 can be effectively prevented, the effect of fully-closed seal protection is realized, meanwhile, the spring 8 adopts a split type soft static ring with a known brand as one of grinding surfaces, the phenomenon of high-temperature crack of the traditional mechanical seal (graphite static ring) is overcome, the online maintenance is realized without cracking the self part of the pump body at the later stage, meanwhile, the spring 8 adopts a plurality of layers of disc springs as a propelling device, the problem of the fatigue effect of the traditional mechanical seal small spring 8 is solved, the seal rings A1, the seal rings B2, the seal rings C3 and the seal ring D5 are upgraded from the original nitrile material with high quality fluorine rubber, can accomplish the advantage of long-term operation such as difficult ageing, corrosion-resistant, support piece 10 forms annular bearing structure along the inside of base member 6, and support piece 10 is HDPE strengthening rib material, and support piece 10 through the strengthening rib material of nested butt joint when guaranteeing device stability, avoids its easy phenomenon that appears deformation, has increased holistic practicality.

Those not described in detail in this specification are within the skill of the art.

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

Claims

1. The utility model provides a high temperature is novel mechanical seal for hydrophobic pump, includes sealing washer A (1), sealing washer B (2), sealing washer C (3), sealing washer D (5), base member (6) and support piece (10), its characterized in that: nested piece (7) are installed to base member (6) outside nestification, and nested between base member (6) and nested piece (7) have soft quiet ring (4) to the butt joint, the inner butt joint of soft quiet ring (4) has sealing washer D (5), and is provided with spring (8) between base member (6) and nested piece (7), and sealing washer A (1), sealing washer B (2), sealing washer C (3) dock in proper order in the outside of base member (6) simultaneously and form seal structure, the inner adhesive connection of base member (6) has corrosion resistant layer (9), and 4 support piece (10) of group are installed to the inner wall nestification of base member (6).

2. The novel mechanical seal for the high-temperature hydrophobic pump according to claim 1, characterized in that: the base body (6) is combined into a full-closed structure through a sealing ring A (1), a sealing ring B (2), a sealing ring C (3) and a sealing ring D (5).

3. The novel mechanical seal for the high-temperature hydrophobic pump according to claim 1, characterized in that: the soft static ring (4) is made of a high-temperature-resistant parting material and is embedded in the embedded piece (7) as a machine seal static ring grinding surface.

4. The novel mechanical seal for the high-temperature hydrophobic pump according to claim 1, characterized in that: sealing washer A (1), sealing washer B (2), sealing washer C (3) and sealing washer D (5) adopt high-quality fluorine to glue the material as nested (7) inside supplementary sealed.

5. The novel mechanical seal for the high-temperature hydrophobic pump according to claim 1, characterized in that: the base body (6) serves as a propulsion compensation device along the interior of the nesting piece (7) through springs (8), and the springs (8) are arranged at equal intervals along the interior of the base body (6).

6. The novel mechanical seal for the high-temperature hydrophobic pump according to claim 1, characterized in that: the support piece (10) forms an annular support structure along the inside of the base body (6), and the support piece (10) is made of HDPE reinforcing ribs.