CN116104811A - Single-end surface mechanical seal installation method for single-suction centrifugal pump - Google Patents

Single-end surface mechanical seal installation method for single-suction centrifugal pump Download PDF

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Publication number
CN116104811A
CN116104811A CN202310179327.9A CN202310179327A CN116104811A CN 116104811 A CN116104811 A CN 116104811A CN 202310179327 A CN202310179327 A CN 202310179327A CN 116104811 A CN116104811 A CN 116104811A
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CN
China
Prior art keywords
mechanical seal
determined
centrifugal pump
shaft sleeve
static ring
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Pending
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CN202310179327.9A
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Chinese (zh)
Inventor
叶俊良
龙平
杨林
王健
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Pangang Group Xichang Steel and Vanadium Co Ltd
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Pangang Group Xichang Steel and Vanadium Co Ltd
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Application filed by Pangang Group Xichang Steel and Vanadium Co Ltd filed Critical Pangang Group Xichang Steel and Vanadium Co Ltd
Priority to CN202310179327.9A priority Critical patent/CN116104811A/en
Publication of CN116104811A publication Critical patent/CN116104811A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention belongs to the technical field of mechanical sealing of a single-suction centrifugal pump, and particularly discloses a single-end surface mechanical sealing installation method of the single-suction centrifugal pump, which comprises the following steps of determining the installation position of a mechanical seal seat on a shaft sleeve: determining the total compression amount of the mechanical seal; determining an amount of working compression of the mechanical seal based on the determined total amount of compression of the mechanical seal; taking the shaft sleeve and the impeller sealing surface as measurement reference surfaces, and determining the distance from the mechanical seal static ring surface to the measurement reference surfaces; and determining the mounting position of the mechanical seal seat on the shaft sleeve based on the determined working compression amount of the mechanical seal and the determined distance from the static ring surface of the mechanical seal to the measurement reference surface. According to the mounting method provided by the invention, the shaft sleeve and the impeller sealing surface are selected as the reference surfaces for measuring and adjusting the size, so that the reference marking errors, the measuring errors and the pump cover mounting times are reduced, the mounting precision of the single-end surface mechanical seal of the single-suction centrifugal pump is improved, and the mounting method has the characteristics of simplicity in mounting calculation, reliability, high efficiency and the like.

Description

Single-end surface mechanical seal installation method for single-suction centrifugal pump
Technical Field
The invention belongs to the technical field of mechanical sealing of a single-suction centrifugal pump, and particularly relates to a single-end surface mechanical sealing installation method of a single-suction centrifugal pump.
Background
The sealing mode of the horizontal single-suction centrifugal pump generally adopts single-end surface mechanical sealing, and is characterized by simple structure, low manufacturing cost and convenient installation and disassembly. However, when the single-end-face mechanical seal is installed by adopting the existing installation method, the problems of complicated mechanical seal calculation and installation, high replacement labor intensity, long replacement operation time, and short service life and the like are caused by the fact that the assembly quality cannot be ensured (for example, the abrasion of the dynamic and static ring friction pair is serious after the replacement or the compression amount (installation compression amount) between the dynamic and static ring friction pair is insufficient or overlarge).
In view of this, the present invention has been made.
Disclosure of Invention
In order to solve at least one of the problems, the invention provides a single-end surface mechanical seal installation method of a single-suction centrifugal pump.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
according to the invention, a single-end-face mechanical seal installation method of a single-suction centrifugal pump is provided, which comprises the following steps of determining the installation position of a mechanical seal seat on a shaft sleeve:
determining the total compression amount of the mechanical seal;
determining an amount of working compression of the mechanical seal based on the determined total amount of compression of the mechanical seal;
taking the shaft sleeve and the impeller sealing surface as measurement reference surfaces, and determining the distance from the mechanical seal static ring surface to the measurement reference surfaces;
and determining the mounting position of the mechanical seal seat on the shaft sleeve based on the determined working compression amount of the mechanical seal and the determined distance from the static ring surface of the mechanical seal to the measurement reference surface.
According to one embodiment of the invention, the total compression of the mechanical seal is determined based on the total length of the mechanical seal in the fully relaxed state of the mechanical seal spring and the total length of the mechanical seal in the fully compressed state of the mechanical seal spring.
According to one embodiment of the invention, the working compression of the mechanical seal is determined based on the determined total compression of the mechanical seal, the flow rate of the single suction centrifugal pump, and the pressure.
According to one embodiment of the invention, the working compression of the mechanical seal is empirically determined based on the determined total compression of the mechanical seal, the flow rate of the single suction centrifugal pump, and the pressure.
According to one embodiment of the invention, the distance of the machine seal annulus from the measurement datum plane is determined by: the static ring and the O-shaped ring are arranged in a static ring seat, and the static ring seat is arranged on the pump cover and fixed; then the pump cover is mounted on the bearing box and fixed; and the shaft sleeve is arranged on the pump shaft, and the distance from the mechanical seal static ring surface to the measuring reference surface is measured.
According to one embodiment of the invention, the mounting position of the seal carrier on the sleeve is determined based on the determined amount of working compression of the mechanical seal, the determined distance of the static ring surface of the seal from the measurement reference surface, and the total length of the mechanical seal in its fully relaxed state.
According to one embodiment of the invention, the single-end-face mechanical seal installation method of the single-suction centrifugal pump further comprises the following steps: after the installation position of the machine seal seat on the shaft sleeve is determined, the machine seal seat, the machine seal spring, the O-shaped ring and the movable ring are installed on the shaft sleeve according to the determined installation position of the machine seal seat on the shaft sleeve, and the machine seal seat is fixed.
According to one embodiment of the invention, the single-end-face mechanical seal installation method of the single-suction centrifugal pump further comprises the following steps: the shaft sleeve provided with the mechanical seal seat, the mechanical seal spring, the O-shaped ring and the movable ring is arranged on the pump shaft, the impeller is arranged on the pump shaft and locked by the impeller backup cap, and then the impeller is integrally and back arranged on the pump body, and the motor is arranged for aligning coaxiality and the coupler, so that the maintenance cleaning field test machine operates.
According to one embodiment of the invention, the single-end-face mechanical seal installation method of the single-suction centrifugal pump further comprises the following steps: the mechanical seal to be installed is disassembled for pre-installation inspection before the mechanical seal is installed.
According to one embodiment of the invention, pre-installation inspection of the mechanical seal includes: and checking whether the appearance of the dynamic and static ring friction pair is damaged or not, and whether the sealing performance of the sealing surface and the O-shaped ring of the dynamic and static ring are damaged or not.
By adopting the technical scheme, the invention has the following beneficial effects:
according to the single-end-face mechanical seal installation method for the single-suction centrifugal pump, the shaft sleeve and the impeller sealing face are selected as the reference faces for measuring and adjusting the size, so that the reference marking errors, the measuring errors and the pump cover installation times are reduced, the installation precision of the single-end-face mechanical seal of the single-suction centrifugal pump is improved, and the method has the characteristics of simplicity in installation calculation, reliability, high efficiency and the like.
Drawings
FIG. 1 is a schematic flow chart of a method for installing a single-ended mechanical seal of a single-suction centrifugal pump according to an embodiment of the invention;
FIG. 2 is a schematic view of a mechanical seal installation location;
FIG. 3 is a schematic view of a mechanical seal in a free state;
FIG. 4 is a schematic view of the mechanical seal in a fully compressed state;
FIG. 5 is a schematic view of the distance from the measuring static ring surface to the measuring reference surface;
FIG. 6 is a schematic view of the calculation principle of the mounting position of the machine seal seat on the shaft sleeve;
fig. 7 is a schematic flow chart of a single-end-face mechanical seal installation method of a single-suction centrifugal pump according to another embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As required, detailed embodiments of the present invention are disclosed in the present specification; however, it is to be understood that the embodiments disclosed herein are merely exemplary of the invention that may be embodied in various and alternative forms. In the following description, a number of operating parameters and components are described in terms of various embodiments contemplated. These specific parameters and components are presented as examples and are not meant to be limiting.
The existing single-end surface mechanical seal installation method of the single-suction centrifugal pump comprises the following steps: after the mechanical seal static ring and the O-shaped ring are arranged on the static ring seat, measuring and calculating the installation plane dimensions of the static ring friction surface and the static ring seat (the installation plane dimensions of the static ring friction surface and the static ring seat = the dimensions of the static ring friction surface and the static ring seat spigot-the installation plane dimensions of the static ring seat); mounting the pump cover on the bearing housing or bracket; installing a mechanical seal seat, a mechanical seal spring, an O-shaped ring and a movable ring of the mechanical seal on the shaft sleeve; the shaft sleeve provided with the mechanical seal seat, the mechanical seal spring, the O-shaped ring and the movable ring is arranged on the pump shaft; scribing on the sealing ring installed on the shaft sleeve through the end face of the sealing ring seat of the pump cover installing machine by using a saw blade or a scriber (namely scribing on the moving ring by taking the installation plane of the sealing ring seat installed on the pump cover as a reference); taking out the shaft sleeve and the pump cover, and measuring the dimension from the friction surface of the upper movable ring of the shaft sleeve to the scribing; and calculating the mechanical seal installation position (mechanical seal installation position = dynamic ring friction surface to scribing size-static ring friction surface and static ring seat installation plane size + mechanical seal working compression) according to the mechanical seal working compression, the measured static ring friction surface and static ring seat installation plane size and dynamic ring friction surface to scribing size.
The existing single-end surface mechanical seal installation method of the single-suction centrifugal pump has the defects that the mechanical seal is poor in tightness, short in service cycle, high in maintenance frequency and high in safety and environmental protection risk due to the fact that the mechanical seal is seriously worn by the replaced dynamic and static ring friction pairs or the compression amount (installation compression amount) between the dynamic and static ring friction pairs is insufficient or overlarge due to the fact that the size chain is too long, the reference selection error is large and the like when the mechanical seal installation position is calculated, and the reference selection error comprises a scribing error, a measuring error and a calculating error. Specifically, in the existing method, a measurement reference is set by scribing, and the position error of the reference line increases the measurement error; the measurement size is more, so that the measurement error and the calculation error are more overlapped, and the deviation of the installation and calculation compression amount is large. In addition, the pump cover of the existing method needs to be installed twice, the mechanical seal replacement operation needs 3 persons to replace for 8 hours, the replacement labor intensity is high, and the operation time is long.
In view of the above problems, the invention provides a single-end surface mechanical seal installation method of a single-suction centrifugal pump, which selects a shaft sleeve and an impeller sealing surface as reference surfaces for measuring and adjusting the size, reduces reference marking errors, measuring errors and pump cover installation times, and improves the installation precision of the single-end surface mechanical seal of the single-suction centrifugal pump.
Fig. 1 shows a flow chart of a method for installing a single-end-face mechanical seal of a single-suction centrifugal pump according to an embodiment of the invention. As shown in fig. 1, the single-end-face mechanical seal installation method 10 of the single-suction centrifugal pump comprises the following steps: s11: determining the total compression amount of the mechanical seal; s12: determining an amount of working compression of the mechanical seal based on the determined total amount of compression of the mechanical seal; s13: taking the shaft sleeve and the impeller sealing surface as measurement reference surfaces, and determining the distance from the mechanical seal static ring surface to the measurement reference surfaces; s14: and determining the mounting position of the mechanical seal seat on the shaft sleeve based on the determined working compression amount of the mechanical seal and the determined distance from the static ring surface of the mechanical seal to the measurement reference surface.
In step S11, the total compression amount of the mechanical seal refers to the maximum possible compression amount of the mechanical seal, and may be determined according to the total length of the mechanical seal in the fully relaxed state of the mechanical seal spring and the total length of the mechanical seal in the fully compressed state of the mechanical seal spring. Specifically, the total compression amount of the mechanical seal = the total length of the mechanical seal in the fully relaxed state of the mechanical seal spring-the total length of the mechanical seal in the fully compressed state of the mechanical seal spring. Here, the total length of the mechanical seal may or may not include the heights of the stationary ring and the stationary ring seat. For example, fig. 3 shows a schematic view of the mechanical seal in a free state, fig. 3 shows a total length of the mechanical seal in a fully relaxed state of the mechanical seal spring by a dimension A1, fig. 4 shows a schematic view of the mechanical seal in a fully compressed state of the mechanical seal by a dimension A2, fig. 4 shows a total length of the mechanical seal in a fully compressed state of the mechanical seal spring, and the total length of the mechanical seal shown here does not include the height of the stationary ring and the stationary ring seat as shown. The mechanical seal to be installed is detached before installation to measure the total compression amount of the mechanical seal, so that the measurement and calculation of the mechanical seal installation compression amount is more accurate.
In step S12, the working compression amount of the mechanical seal is determined based on the determined total compression amount of the mechanical seal, the flow rate of the single suction centrifugal pump, and the pressure, and in particular, is empirically determined based on the determined total compression amount of the mechanical seal, the flow rate of the single suction centrifugal pump, and the pressure.
In step S13, the shaft sleeve and the impeller sealing surface are used as measurement reference surfaces, so that the distance from the static ring surface of the mechanical seal to the shaft sleeve and the impeller sealing surface can be measured more accurately, the position of the mechanical seal moving ring seat on the shaft sleeve can be determined more accurately, the position of the mechanical seal moving ring seat on the shaft sleeve is the key point of mechanical seal installation, and the sealing performance and the service life of the mechanical seal can be affected. The distance from the machine seal static ring surface to the measurement reference surface is determined by the following method: the static ring and the O-shaped ring are arranged in a static ring seat, and the static ring seat is arranged on the pump cover and fixed; then the pump cover is mounted on the bearing box and fixed; and the shaft sleeve is arranged on the pump shaft, and the distance from the mechanical seal static ring surface to the measuring reference surface is measured. In particular, the distance from the machine seal static ring surface to the measurement reference surface can be measured by a depth gauge or a vernier caliper with depth. Fig. 5 is a schematic diagram of the distance from the measuring static ring surface to the measuring reference surface, and the dimension A3 in fig. 5 represents the distance from the machine seal static ring surface to the measuring reference surface.
In step S14, the mounting position of the seal carrier on the sleeve is determined based on the determined amount of working compression of the mechanical seal, the determined distance of the static ring surface of the seal from the measurement reference surface, and the total length of the mechanical seal in the fully relaxed state of the seal spring. Fig. 2 is a schematic view of a mechanical seal installation position, and a size a in fig. 2 indicates an installation position of a mechanical seal seat on a shaft sleeve. Specifically, the mounting position of the mechanical seal seat on the shaft sleeve (shown as a in fig. 2) =the distance from the static ring surface of the mechanical seal to the measurement reference surface (shown as A3 in fig. 5) — the total length of the mechanical seal in the fully relaxed state of the mechanical seal spring (shown as A1 in fig. 3) +the working compression amount of the mechanical seal. Fig. 6 is a schematic view of the calculation principle of the mounting position of the machine seal seat on the shaft sleeve, from which the above-mentioned relationship can be clearly shown.
Fig. 7 shows a flow chart of a method for installing a single-end-face mechanical seal of a single suction centrifugal pump according to another embodiment of the invention. As shown in fig. 7, the single-end-face mechanical seal installation method 20 of the single-suction centrifugal pump includes the following steps: s21: checking before mechanical seal installation; s22: determining a total compression amount of the mechanical seal and determining a working compression amount of the mechanical seal based on the determined total compression amount of the mechanical seal; s23: the static ring and the O-shaped ring are arranged in a static ring seat, the static ring seat is arranged on a pump cover and fixed, and then the pump cover is arranged on a bearing box and fixed; s24: the method comprises the steps of installing a shaft sleeve on a pump shaft, taking a sealing surface of the shaft sleeve and an impeller as a measuring reference surface, and measuring the distance from a static ring surface of a mechanical seal to the measuring reference surface; s25: determining the mounting position of the mechanical seal seat on the shaft sleeve based on the determined working compression amount of the mechanical seal and the determined distance from the static ring surface of the mechanical seal to the measurement reference surface; s26: taking out the shaft sleeve, and installing the machine seal seat, the machine seal spring, the O-shaped ring and the movable ring on the shaft sleeve according to the determined installation position of the machine seal seat on the shaft sleeve and fixing the machine seal seat; s27: the shaft sleeve provided with the mechanical seal seat, the mechanical seal spring, the O-shaped ring and the movable ring is arranged on the pump shaft, the impeller is arranged on the pump shaft and locked by the impeller backup cap, and then the impeller is integrally and back arranged on the pump body, and the motor is arranged for aligning coaxiality and the coupler, so that the maintenance cleaning field test machine operates.
In step S21, the inspection before the mechanical seal is mounted includes: and disassembling the mechanical seal to be installed, and checking whether the appearance of the dynamic and static ring friction pair is damaged, the sealing performance of the sealing surface and whether the dynamic and static ring O-shaped ring is damaged or not. The mechanical seal is checked before being installed, so that the success rate of the mechanical seal installation can be ensured.
Step S22 is the same as step S11 and step S12, step S23 and step S24 are the same as step S13, and step S25 is the same as step S14, and the description is omitted here.
Compared with the prior single-end surface mechanical seal installation method of the single-suction centrifugal pump, the single-end surface mechanical seal installation method of the single-suction centrifugal pump provided by the invention has the following advantages: the shaft sleeve and the impeller sealing surface are used as reference surfaces for measuring and adjusting the size, the reference surfaces are fixed, the measuring error is reduced, and the mechanical sealing position is determined more accurately; the existing measurement size is small, so that the superposition of measurement errors and calculation errors is small, and the mechanical seal is installed and the calculated compression amount is accurate; the pump cover only needs to be installed once, and 2 people and 6 hours are needed for replacing the mechanical seal operation, so that the maintenance time is shortened, the maintenance efficiency is improved, and the labor intensity of maintenance personnel is reduced; the mechanical seal in the installation mode has the advantages of long service cycle, less maintenance times, reduced spare part material cost, saved equipment maintenance cost, reduced safety and environmental protection risks and improved equipment starting rate.
It should be noted that, each component or step in each embodiment may be intersected, replaced, added, and deleted, and therefore, the combination formed by these reasonable permutation and combination transformations shall also belong to the protection scope of the present invention, and shall not limit the protection scope of the present invention to the embodiments.
The foregoing is an exemplary embodiment of the present disclosure, and the order in which the embodiments of the present disclosure are disclosed is merely for the purpose of description and does not represent the advantages or disadvantages of the embodiments. It should be noted that the above discussion of any of the embodiments is merely exemplary and is not intended to suggest that the scope of the disclosure of embodiments of the invention (including the claims) is limited to these examples and that various changes and modifications may be made without departing from the scope of the invention as defined in the claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
Those of ordinary skill in the art will appreciate that: the above discussion of any embodiment is merely exemplary and is not intended to imply that the scope of the disclosure of embodiments of the invention, including the claims, is limited to such examples; combinations of features of the above embodiments or in different embodiments are also possible within the idea of an embodiment of the invention, and there are many other variations of the different aspects of the embodiments of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, and the like, which are made within the spirit and principles of the embodiments of the invention, are included within the scope of the embodiments of the invention.

Claims (10)

1. The single-end-face mechanical seal installation method of the single-suction centrifugal pump is characterized by comprising the following steps of determining the installation position of a mechanical seal seat on a shaft sleeve:
determining the total compression amount of the mechanical seal;
determining an amount of working compression of the mechanical seal based on the determined total amount of compression of the mechanical seal;
taking the shaft sleeve and the impeller sealing surface as measurement reference surfaces, and determining the distance from the mechanical seal static ring surface to the measurement reference surfaces;
and determining the mounting position of the mechanical seal seat on the shaft sleeve based on the determined working compression amount of the mechanical seal and the determined distance from the static ring surface of the mechanical seal to the measurement reference surface.
2. The method of installing a single-ended mechanical seal for a single suction centrifugal pump according to claim 1, wherein the total compression amount of the mechanical seal is determined according to the total length of the mechanical seal in a fully relaxed state of the mechanical seal spring and the total length of the mechanical seal in a fully compressed state of the mechanical seal spring.
3. The method of installing a single-ended mechanical seal for a single-suction centrifugal pump according to claim 1, wherein the working compression amount of the mechanical seal is determined based on the determined total compression amount of the mechanical seal, the flow rate of the single-suction centrifugal pump, and the pressure.
4. A single-ended mechanical seal installation method according to claim 3, wherein the amount of working compression of the mechanical seal is empirically determined based on the determined total amount of compression of the mechanical seal, the flow rate of the single-suction centrifugal pump, and the pressure.
5. The single-ended mechanical seal installation method of a single-suction centrifugal pump according to claim 1, wherein a distance from a mechanically sealed static ring surface to a measurement reference surface is determined by: the static ring and the O-shaped ring are arranged in a static ring seat, and the static ring seat is arranged on the pump cover and fixed; then the pump cover is mounted on the bearing box and fixed; and the shaft sleeve is arranged on the pump shaft, and the distance from the mechanical seal static ring surface to the measuring reference surface is measured.
6. The method of claim 1, wherein the mounting position of the seal carrier on the sleeve is determined based on the determined amount of working compression of the mechanical seal, the determined distance from the static ring surface of the mechanical seal to the measurement reference surface, and the total length of the mechanical seal in a fully relaxed state of the mechanical seal spring.
7. The single-ended mechanical seal mounting method of a single-ended centrifugal pump of claim 1, further comprising: after the installation position of the machine seal seat on the shaft sleeve is determined, the machine seal seat, the machine seal spring, the O-shaped ring and the movable ring are installed on the shaft sleeve according to the determined installation position of the machine seal seat on the shaft sleeve, and the machine seal seat is fixed.
8. The single-ended mechanical seal mounting method of a single-ended centrifugal pump of claim 7, further comprising: the shaft sleeve provided with the mechanical seal seat, the mechanical seal spring, the O-shaped ring and the movable ring is arranged on the pump shaft, the impeller is arranged on the pump shaft and locked by the impeller backup cap, and then the impeller is integrally and back arranged on the pump body, and the motor is arranged for aligning coaxiality and the coupler, so that the maintenance cleaning field test machine operates.
9. The single-ended mechanical seal mounting method of a single-ended centrifugal pump of claim 1, further comprising: the mechanical seal to be installed is disassembled for pre-installation inspection before the mechanical seal is installed.
10. The method of installing a single-ended mechanical seal for a single-suction centrifugal pump of claim 9, wherein the pre-installation inspection of the mechanical seal comprises: and checking whether the appearance of the dynamic and static ring friction pair is damaged or not, and whether the sealing performance of the sealing surface and the O-shaped ring of the dynamic and static ring are damaged or not.
CN202310179327.9A 2023-02-27 2023-02-27 Single-end surface mechanical seal installation method for single-suction centrifugal pump Pending CN116104811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310179327.9A CN116104811A (en) 2023-02-27 2023-02-27 Single-end surface mechanical seal installation method for single-suction centrifugal pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310179327.9A CN116104811A (en) 2023-02-27 2023-02-27 Single-end surface mechanical seal installation method for single-suction centrifugal pump

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Publication Number Publication Date
CN116104811A true CN116104811A (en) 2023-05-12

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