CN103883564A - Water pump mechanical seal washing and cooling structure for direct-current transmission direct-current transmission water cooling system - Google Patents
Water pump mechanical seal washing and cooling structure for direct-current transmission direct-current transmission water cooling system Download PDFInfo
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- CN103883564A CN103883564A CN201410140722.7A CN201410140722A CN103883564A CN 103883564 A CN103883564 A CN 103883564A CN 201410140722 A CN201410140722 A CN 201410140722A CN 103883564 A CN103883564 A CN 103883564A
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Abstract
The invention provides a water pump mechanical seal washing and cooling structure for a direct-current transmission direct-current transmission water cooling system. The water pump mechanical seal washing and cooling structure comprises a mechanical seal cooling cavity water inlet pipe and a mechanical seal cooling cavity water outlet pipe, wherein the mechanical seal cooling cavity water inlet pipe is connected into a water pump outlet flange hole, the mechanical seal cooling cavity water outlet pipe is connected into a water pump inlet flange hole, and a ball valve is arranged on the mechanical seal cooling cavity water inlet pipe. The water pump mechanical seal washing and cooling structure washes and cools mechanical seal by cooling water pump transmission medium; due to the fact that the water pump transmission medium is purified water treated by ion exchange resin, pollution to the mechanical seal is small, and corrosion and scaling are avoided. On one hand, the water pump mechanical seal washing and cooling structure is simple in structure and capable of reducing cost due to the fact that no external cooling device is needed; on the other hand, washing and cooling liquid does not need to be replaced or discharged, and clean production is facilitated.
Description
Technical field
The present invention relates to water pump mechanical seal and rinse cooling structure, particularly direct-current transmission converter valve constituent is rinsed cooling structure with water pump mechanical seal.
Background technique
Direct-current transmission converter valve is one of nucleus equipment of direct current transportation, the heat that converter valve produces in the time of work, can cause the device temperatures such as valve body to raise, if do not configure suitable cooling measure, will make valve body temperature exceed allowed maximum junction temperature, thereby cause device performance degradation and device failure.Due to the feature such as thermal conductive resin and insulating properties of pure water, can well be applied to the heat conduction of this high voltage and high power device, thereby, adopt pure water-cooled relevant art also just to arise at the historic moment.Direct-current transmission converter valve constituent adopts pure water cooling technology to solve the secure heat dissipation problem of converter valve under the conditions such as high voltage, strong electrical field, strong jamming, high heat flux, thereby while ensureing device operation, within its inner junction temperature remains at the junction temperature of permission.
Early stage direct-current transmission converter valve constituent is used Single Mechanical sealing centrifugal pump to provide power for the whole circulatory system.End face seal is named again in mechanical seal, is by a pair of or several the end face of making relative sliding perpendicular to axle is fitted and is equipped with auxiliary seal and reaches the gland seal device of Drain Resistance in the lower maintenance of elastic force (or magnetic force) effect of hydrodynamic pressure and compensation mechanism.Generally formed by rotating ring, stationary ring, seal ring of moving ring, stationary ring seal ring, spring, spring seat, Cock screw, stop pin etc.When mechanical seal work, the axial force being caused by the elastic force of fluid-encapsulated pressure and elastic element etc. makes laminating the relative movement mutually of rotating ring and stationary ring, due to closely cooperating of two seal faces, make the boundary (seal interface) between seal face form a micro-gap, in the time having piezodielectric to pass through this gap, form liquid film as thin as a wafer, produce resistance, stop dielectric leakage, liquid film makes again end face be lubricated simultaneously, obtains long term seal effect.But, analyze mechanical seal place percolating water and mainly contain following three kinds of reasons often because Leakage of Mechanical Seals in Alumina Plant water sends alarm signal at direct-current transmission converter valve constituent discovery direct-current transmission converter valve in service water-cooling control system: the dynamic and static plane of a loop of (1) machine envelope weares and teares because the reasons such as installation, lack of water or cavitation erosion cause; (2) mechanical seal glue ageing failure; (3) motor axle journal machining accuracy is poor, size is little, coarse and axle journal corrosion.Under the environmental conditionss such as high voltage, strong electrical field, strong jamming, high heat flux, leaking for the reliable operation of converter valve is breakneck factor, so how avoiding pump mechanical seal water to leak is the problem of needing solution badly.
Water pump need to rinse by direct filling liquid to the position, high pressure side of mechanical seal in the time of operation.The object of rinsing is sealing, Cooling and Lubricator: in (1) sealing Seal cage, pass into liquid, thereby prevent that high temperature media from spilling from pump shaft; Prevent that the medium that contains solid particle from bleeding in Seal cage, wearing and tearing sealing surface; (2) the cooling frictional heat producing while leading away the work of rotating ring and stationary ring; (3), there is one deck liquid film lubricate lubricated maintenance between sealing surface.Existing mode has three kinds of (1) wet pit endless form, and wet pit endless form drives by natural circulation or pump, gets back to wet pit, and obtain cooling from Seal cage hydrothermal solution out.Cooled washing solution is got back in Seal cage again, lubricated and coolant seal face.After a period of time, because the washing solution in pond can be subject to the pollution of pumping liquid, therefore must change it, be not easy to operation, and this system do not process in real time to water quality in wet pit, easily cause corrosion or fouling, damage machine envelope.(2) the acyclic mode of wet pit, washing solution lubrication and seal face, after a period of time, because the washing solution in pond can be subject to the pollution of pumping liquid, therefore must change it, and this system is not dispelled the heat.(3) outside washing solution system, washing solution rinses Seal cage, then enters gutter.Washing solution can effective cooling lubrication and seal face, and which is unfavorable for cleaner production.In sum, above three kinds of backwashing manners are not optimal selections.
Summary of the invention
The object of the invention is to overcome the shortcoming of above-mentioned prior art, provide a kind of direct-current transmission converter valve constituent water pump mechanical seal to rinse cooling structure.
Object of the present invention is achieved through the following technical solutions:
Direct-current transmission converter valve constituent is rinsed cooling structure with water pump mechanical seal, comprise machine envelope cooling chamber intake pipe and machine envelope cooling chamber outlet pipe, described machine envelope cooling chamber intake pipe access exit of pump flange hole, machine envelope cooling chamber outlet pipe access unit fixed on water pump suction flange hole, described machine envelope cooling chamber intake pipe is provided with ball valve, is used for regulating the flow of machine seal cooling water.
In order better to realize the present invention, described machine envelope cooling chamber outlet pipe comprises one section of metallic hose, because machine envelope cooling chamber outlet pipe will stride across FlexbleJoint, improves the flexible of pipeline by metallic hose.
In order better to realize the present invention, described unit fixed on water pump suction flange hole is welded with ball valve, and ball valve is connected with machine envelope cooling chamber outlet pipe by ferrule fitting, is convenient for changing machine envelope after Cutoff ball valve.
In order better to realize the present invention, described machine envelope cooling chamber intake pipe is provided with choke apparatus, in order to reduce the pressure of machine seal cooling water.
In order better to realize the present invention, described mechanical seal adopts two mechanical seal series connection.
In order better to realize the present invention, described mechanical seal material is silicon carbide.
Compared with prior art, tool has the following advantages and beneficial effect in the present invention:
(1) adopt that water pump fed sheet of a media is cooling to be rinsed coolingly to machine envelope, because water pump fed sheet of a media is the pure water after ion exchange resin treatment, so machine envelope is polluted very little, there will not be corrosion and scale problems; Simple in structure on the other hand, without external cooling device, cost-saving; On the one hand without changing or discharge flushing cooling liquid, be conducive to cleaner production again;
(2) form that adopts two single mechanical end face seals to connect, improves the reliability of mechanical seal;
(3) adopt the choke apparatus of particular design to reduce the pressure of machine seal cooling water, simple in structure, effect of easing stress is good.
Brief description of the drawings
Fig. 1 is that the direct-current transmission converter valve constituent water pump mechanical seal described in an embodiment of the invention rinses cooling structure stereogram;
Fig. 2 is that the direct-current transmission converter valve constituent water pump mechanical seal described in an embodiment of the invention rinses cooling structure plan view;
Fig. 3 is that the direct-current transmission converter valve constituent water pump mechanical seal described in an embodiment of the invention rinses cooling structure choke apparatus stereogram;
Fig. 4 is that the direct-current transmission converter valve constituent water pump mechanical seal described in an embodiment of the invention rinses cooling structure choke apparatus plan view;
Fig. 5 is that the direct-current transmission converter valve constituent water pump mechanical seal described in an embodiment of the invention rinses cooling structure choke apparatus A-A sectional view.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the invention are described in further detail, but embodiments of the present invention are not limited to this.
As Fig. 1, shown in Fig. 2, direct-current transmission converter valve constituent is rinsed cooling structure with water pump mechanical seal, comprise machine envelope cooling chamber intake pipe 1 and machine envelope cooling chamber outlet pipe 2, described machine envelope cooling chamber intake pipe 1 accesses exit of pump flange hole, machine envelope cooling chamber outlet pipe 2 accesses unit fixed on water pump suction flange hole, and described machine envelope cooling chamber intake pipe is provided with ball valve 3.
Described machine envelope cooling chamber outlet pipe comprises one section of metallic hose 4, because machine envelope cooling chamber outlet pipe will stride across FlexbleJoint, improves the flexible of pipeline by metallic hose.
Described unit fixed on water pump suction flange hole is welded with ball valve 5, and ball valve is connected with machine envelope cooling chamber outlet pipe by ferrule fitting, is convenient for changing machine envelope after Cutoff ball valve.
Described machine envelope cooling chamber intake pipe is provided with choke apparatus 6(as shown in Fig. 3, Fig. 4 and Fig. 5), in order to reduce the pressure of machine seal cooling water.
Described mechanical seal adopts two mechanical seal series connection.
Described mechanical seal material is silicon carbide.
Above-described embodiment is preferably mode of execution of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (6)
1. direct-current transmission converter valve constituent is rinsed cooling structure with water pump mechanical seal, it is characterized in that: comprise machine envelope cooling chamber intake pipe and machine envelope cooling chamber outlet pipe, described machine envelope cooling chamber intake pipe access exit of pump flange hole, machine envelope cooling chamber outlet pipe access unit fixed on water pump suction flange hole, described machine envelope cooling chamber intake pipe is provided with ball valve.
2. direct-current transmission converter valve constituent according to claim 1 is rinsed cooling structure with water pump mechanical seal, it is characterized in that: described machine envelope cooling chamber outlet pipe comprises one section of metallic hose.
3. direct-current transmission converter valve constituent according to claim 1 is rinsed cooling structure with water pump mechanical seal, it is characterized in that: described unit fixed on water pump suction flange hole is welded with ball valve, and ball valve is connected with machine envelope cooling chamber outlet pipe by ferrule fitting.
4. direct-current transmission converter valve constituent according to claim 1 is rinsed cooling structure with water pump mechanical seal, it is characterized in that: described machine envelope cooling chamber intake pipe is provided with choke apparatus.
5. direct-current transmission converter valve constituent according to claim 1 is rinsed cooling structure with water pump mechanical seal, it is characterized in that: described mechanical seal adopts two mechanical seal series connection.
6. direct-current transmission converter valve constituent according to claim 1 is rinsed cooling structure with water pump mechanical seal, it is characterized in that: described mechanical seal material is silicon carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410140722.7A CN103883564A (en) | 2014-04-09 | 2014-04-09 | Water pump mechanical seal washing and cooling structure for direct-current transmission direct-current transmission water cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410140722.7A CN103883564A (en) | 2014-04-09 | 2014-04-09 | Water pump mechanical seal washing and cooling structure for direct-current transmission direct-current transmission water cooling system |
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| CN103883564A true CN103883564A (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410140722.7A Pending CN103883564A (en) | 2014-04-09 | 2014-04-09 | Water pump mechanical seal washing and cooling structure for direct-current transmission direct-current transmission water cooling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118183A (en) * | 2019-05-31 | 2019-08-13 | 上海上涵自动化科技有限公司 | Self-adjusting energy-saving centrifugal pump |
| WO2023142202A1 (en) * | 2022-01-28 | 2023-08-03 | 浙江水泵总厂有限公司 | Mechanical seal flushing structure and vacuum-tight pipeline system having same |
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| CN201170186Y (en) * | 2008-01-04 | 2008-12-24 | 沈阳鼓风机(集团)有限公司 | Emergency pump |
| CN101509504A (en) * | 2009-04-02 | 2009-08-19 | 湖北三峡泵业有限公司 | Mechanical seal cooling and flushing device for single-stage centrifugal pump |
| EP2672121A1 (en) * | 2012-06-06 | 2013-12-11 | Alstom Technology Ltd | Pump Shaft Sealing Device |
| CN103671229A (en) * | 2013-12-09 | 2014-03-26 | 无锡艾比德泵业有限公司 | Centrifugal pump with improved mechanical seal cooling structure |
| CN204082681U (en) * | 2014-04-09 | 2015-01-07 | 广州高澜节能技术股份有限公司 | Direct-current transmission converter valve constituent water pump mechanical seal rinses cooling structure |
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2014
- 2014-04-09 CN CN201410140722.7A patent/CN103883564A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201170186Y (en) * | 2008-01-04 | 2008-12-24 | 沈阳鼓风机(集团)有限公司 | Emergency pump |
| CN101509504A (en) * | 2009-04-02 | 2009-08-19 | 湖北三峡泵业有限公司 | Mechanical seal cooling and flushing device for single-stage centrifugal pump |
| EP2672121A1 (en) * | 2012-06-06 | 2013-12-11 | Alstom Technology Ltd | Pump Shaft Sealing Device |
| CN103671229A (en) * | 2013-12-09 | 2014-03-26 | 无锡艾比德泵业有限公司 | Centrifugal pump with improved mechanical seal cooling structure |
| CN204082681U (en) * | 2014-04-09 | 2015-01-07 | 广州高澜节能技术股份有限公司 | Direct-current transmission converter valve constituent water pump mechanical seal rinses cooling structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118183A (en) * | 2019-05-31 | 2019-08-13 | 上海上涵自动化科技有限公司 | Self-adjusting energy-saving centrifugal pump |
| WO2023142202A1 (en) * | 2022-01-28 | 2023-08-03 | 浙江水泵总厂有限公司 | Mechanical seal flushing structure and vacuum-tight pipeline system having same |
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Application publication date: 20140625 |