CN105526189A - Built-in water-cooling shaft seal structure of marine horizontal centrifugal pump - Google Patents
Built-in water-cooling shaft seal structure of marine horizontal centrifugal pump Download PDFInfo
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- CN105526189A CN105526189A CN201410561848.1A CN201410561848A CN105526189A CN 105526189 A CN105526189 A CN 105526189A CN 201410561848 A CN201410561848 A CN 201410561848A CN 105526189 A CN105526189 A CN 105526189A
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- cooling
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Abstract
The invention discloses a built-in water-cooling structure of a marine horizontal centrifugal pump. According to the structure, the pump is used as a carrier. The pump is mounted on a base in a positioned mode and is directly connected with a motor through a bracket. An impeller in the pump is blocked by a pump cover, and a mechanical seal mounted in an axial hole of the pump cover is matched with a pump shaft to form a shaft seal. According to the built-in water-cooling structure, an inclined hole directly communicates with the shaft seal is formed in the end face of the side, facing the impeller, of the pump cover, and the built-in water-cooling structure with the pump cavity communicating with the shaft seal is formed through the inclined hole. According to the water-cooling structure, the water-cooling mechanical seal and the pump synchronously operate, it is ensured that the mechanical seal is fully and reliably cooled in time, and the problem that a movable ring and a static ring of the mechanical seal crack due to quenching is avoided; due to the fact that the mechanical seal is good in operation posture, it is ensured that the shaft seal is long in service life and good in sealing effect. Due to the fact that the built-in water-cooling structure does not occupy extra space, the built-in water-cooling structure is particularly suitable for being matched with the marine horizontal centrifugal pump mounted in a cabin.
Description
Technical field
The present invention relates to a kind of water-cooling shaft seal structure, specifically, the present invention relates to a kind of supporting water-cooling shaft seal structure in horizontal centrifugal pump.
Background technique
The agent structure of horizontal centrifugal pump is Pump and Electromotor coaxial linkage, between Pump and Electromotor, be provided with shaft seal, and different industries has different demand because operating mode is different to supporting shaft seal structure, and the shaft seal sealability difference of different structure is very large.Horizontal centrifugal pump peculiar to vessel is because drifting about with ship, adding mounting point is in the cabin of space relative narrowness, the daily adjustment of Pump Shaft Seal, maintenance are very inconvenient, so have higher quality requirement to the shaft seal of marine centrifugal pump, and the first-selected mechanical seal of the supporting shaft seal of commercially available marine centrifugal pump.During horizontal centrifugal pump operation peculiar to vessel, the rotating ring rotational speed of mechanical seal between 9ms ~ 16ms, under so high linear velocity, if dynamic and static ring friction pair can not get necessary cooling, temperature can increase rapidly, and too high temperature will cause dynamic and static ring sealing pair scaling loss.Even if friction pair is not by high temperature scaling loss, once contact with the cooling water of normal temperature, because both temperature difference great Yi cause cracking, thus cause mechanical sealing element to lose efficacy, the medium leaked enters along pump shaft and easily causes motor burning accident.The supporting shaft seal constituent of existing goods horizontal centrifugal pump peculiar to vessel mainly contains the large class of positive displacement or external cooling water special road two, although existing water-cooling structure cooling is reliable, structure relative complex, volume is large, Maintenance Difficulty is not the shaft seal water-cooling structure of horizontal centrifugal pump the best peculiar to vessel.
Summary of the invention
The present invention mainly for the deficiency of prior art products, propose a kind of structure simple, make that to be easy to built-in water passage true, this water channel water-cooled is timely, enough, and the horizontal centrifugal pump built-in water-cooling shaft seal structure peculiar to vessel additionally do not taken up room.
The present invention is achieved through the following technical solutions technical goal.
Horizontal centrifugal pump built-in water-cooling shaft seal structure peculiar to vessel, this structure take pump as carrier.Described pump location and installation is on base, and pump is by bracket direct-coupled electrical machinery.The built-in impeller of described pump is by pump cover block, and the mechanical seal of installing in pump cover axial bore coordinates with pump shaft and forms shaft seal.Its improvements are: the side end face that described pump cover faces impeller is provided with the inclined hole at straight-through shaft seal place, and inclined hole forms the built-in water-cooling structure that pump chamber links up shaft seal.
In said structure, pump cover faces inclined hole impeller one side end face being equipped with 2 ~ 4 straight-through shaft seal places, and inclined hole is the circular hole of Φ 5mm ~ Φ 8mm.
The present invention compared with prior art, has following good effect:
It is very simple that 1, water-cooling structure is set on pump cover interior edge face, makes easily;
2, water-cooled operates synchronous with pump, shaft seal is cooled in time, fully cooling and reliably cool, mechanical seal is in good cooler environment, long service life, good sealing effect;
3, built-in water-cooling structure does not additionally take up space, and is conducive to horizontal centrifugal pump peculiar to vessel and installs in cabin.
Accompanying drawing explanation
Fig. 1 is structural profile schematic diagram of the present invention.
Fig. 2 is the close-up schematic view of the 3.1.1 of inclined hole shown in Fig. 1.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the invention will be further described.
Horizontal centrifugal pump built-in water-cooling shaft seal structure peculiar to vessel shown in Fig. 1, this structure with pump 3 for carrier.Described pump 3 is a kind of single absorption horizontal centrifugal pumps, and the pump 3 of location and installation on base is by bracket 2 direct-coupled electrical machinery 1.The impeller 3.2 established in pump 3 is by pump cover 3.1 block, and the mechanical seal 4 of installing in pump cover 3.1 axial bore coordinates with pump shaft and forms shaft seal.The present invention cools problem to solve when mechanical seal 4 rotates with pump shaft, devises a kind of built-in water-cooling shaft seal structure, and this structure causes minor amount of water to specialize in shaft seal from carrying setting-out of carry of pump 3 to cool.Built-in water-cooling shaft seal structure is located in pump cover 3.1, concrete structure is that pump cover 3.1 faces on a side end face of impeller 3.2, be provided with the inclined hole 3.1.1 of straight-through shaft seal position, inclined hole 3.1.1 forms the built-in channel that pump chamber links up shaft seal, cause from pump chamber and the water that trace carries pressure and to go directly shaft seal, mechanical seal 4 is reliably cooled.The present embodiment is Q=21m
3the horizontal centrifugal pump peculiar to vessel of/h, H=42m, because specification is little, pump cover 3.1 faces and impeller 3.2 1 side end face is equipped with 2 inclined hole 3.1.1 just can meets the requirement of shaft seal water-cooled, guarantees that mechanical seal 4 obtains fully cooling and reliably cools.The maximum benefit of the present invention accomplishes that water-cooled mechanical seal operates synchronous with pump 3, because mechanical seal 4 is cooled in time, the dynamic and static ring opening problem that chilling causes mechanical seal can not occur, due to mechanical seal 4, to run matter state good, guarantee shaft seal long service life, sealing effect is good.Another benefit is that built-in water-cooling structure does not additionally take up space, and the horizontal centrifugal pump peculiar to vessel being particularly suitable for installing in cabin is supporting.
Claims (3)
1. a horizontal centrifugal pump built-in water-cooling shaft seal structure peculiar to vessel, this structure with pump (3) for carrier; Described pump (3) location and installation is on base (5), and pump (3) is by bracket (2) direct-coupled electrical machinery (1); The built-in impeller (3.2) of described pump (3) is by pump cover (3.1) block, and the mechanical seal (4) of installing in pump cover (3.1) axial bore coordinates with pump shaft and forms shaft seal; It is characterized in that: the side end face that described pump cover (3.1) faces impeller (3.2) is provided with the inclined hole (3.1.1) at straight-through shaft seal place, inclined hole (3.1.1) forms the built-in water-cooling structure that pump chamber links up shaft seal.
2. horizontal centrifugal pump built-in water-cooling shaft seal structure peculiar to vessel according to claim 1, is characterized in that: described pump cover (3.1) faces the inclined hole (3.1.1) impeller (3.2) side end face being equipped with 2 ~ 4 straight-through shaft seal places.
3. horizontal centrifugal pump built-in water-cooling shaft seal structure peculiar to vessel according to claim 1, is characterized in that: the circular hole that described inclined hole (3.1.1) is Φ 5mm ~ Φ 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410561848.1A CN105526189A (en) | 2014-10-22 | 2014-10-22 | Built-in water-cooling shaft seal structure of marine horizontal centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410561848.1A CN105526189A (en) | 2014-10-22 | 2014-10-22 | Built-in water-cooling shaft seal structure of marine horizontal centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105526189A true CN105526189A (en) | 2016-04-27 |
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ID=55768618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410561848.1A Pending CN105526189A (en) | 2014-10-22 | 2014-10-22 | Built-in water-cooling shaft seal structure of marine horizontal centrifugal pump |
Country Status (1)
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| CN (1) | CN105526189A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118110A (en) * | 2019-06-28 | 2019-08-13 | 连云港利德电力设备有限公司 | Gland-sealing cooler applied to steam turbine |
-
2014
- 2014-10-22 CN CN201410561848.1A patent/CN105526189A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118110A (en) * | 2019-06-28 | 2019-08-13 | 连云港利德电力设备有限公司 | Gland-sealing cooler applied to steam turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160427 |
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| WD01 | Invention patent application deemed withdrawn after publication |