CN106122108A - A kind of mechanical face seals of centrifugal pumps flusher - Google Patents
A kind of mechanical face seals of centrifugal pumps flusher Download PDFInfo
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- CN106122108A CN106122108A CN201610603735.2A CN201610603735A CN106122108A CN 106122108 A CN106122108 A CN 106122108A CN 201610603735 A CN201610603735 A CN 201610603735A CN 106122108 A CN106122108 A CN 106122108A
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- arm
- centrifugal pump
- stop valve
- pipe
- flush pipe
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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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
-
- 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
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of mechanical face seals of centrifugal pumps flusher, belong to centrifugal pump technical field, including the flush pipe being connected on centrifugal pump, the liquid feeding end of flush pipe is connected with the port of export of centrifugal pump, the liquid outlet of flush pipe and the mechanical connection of centrifugal pump, it is characterized in that: connecting in described flush pipe has tubular filter, Pressure gauge and restricting orifice, described tubular filter is near the port of export of centrifugal pump, described restricting orifice is near the mechanical seal of centrifugal pump, the first stop valve and the second stop valve it is provided with in described flush pipe, described first stop valve is between the port of export and tubular filter of centrifugal pump, described second stop valve is between Pressure gauge and restricting orifice.The present invention, can either play good cooling effect, be prevented from again deposited particles impurity on dynamic and static ring sealing face mechanical seal, and effectively protection dynamic and static ring sealing face, reduces abrasion, improves sealing effectiveness, and then ensures the operation of centrifugal pump normal table.
Description
Technical field
The present invention relates to centrifugal pump technical field, particularly relate to a kind of mechanical face seals of centrifugal pumps flusher.
Background technology
Centrifugal pump is that the centrifugal force produced by the impeller of rotary pump drives the rotation of fluid to complete the dress of fluid conveying
Put.
The essential structure of centrifugal pump includes six parts, is impeller, the pump housing, pump shaft, bearing, sealing ring and stuffing-box respectively.
Wherein, impeller is the core of centrifugal pump, and its rotating speed high output is big, and the blade on impeller plays again Main Function, and impeller exists
Before assembling, static balance to be passed through is tested.Surfaces externally and internally on impeller requires smooth, to reduce the friction loss of current.The pump housing is also referred to as
Pump case, it is the main body of water pump.Play support fixation, and be connected with the bracket installing bearing.The effect of pump shaft be by
Impeller is passed in the torque of motor, is the critical piece of transmission mechanical energy.Stuffing-box mainly by filler, seal cage, filling tube, fill out
Material gland, water sealing (sealing water) pipe composition.The effect of stuffing-box primarily to the space closed between pump case and pump shaft, does not allow the water in pump
Flow to outside come, the most do not allow the air of outside enter in pump, remain the vacuum in water pump.When pump shaft produces with filler friction
Heat amount, it is necessary to cool down filler, to keep the properly functioning of water pump.
Centrifugal pump shutdown is mainly caused by mechanical seal inefficacy.The performance lost efficacy is mostly leakage, and leakaging cause has
Multiple, actually used during reason the most prominent be the leakage in dynamic and static ring sealing face.It is mainly manifested in: sealing surface during installation
Excesssive gap, flushing liquor has little time to take away the heat that friction pair produces；Flushing liquor leaks from sealing surface gap, causes end face mistake
Heat and damage；Liquid medium vaporized expanding, makes both ends of the surface be separated by vaporized expanding power, when two sealing surfaces are firmly fitted, broken
Bad lubricating film thus cause end face surface overheated；It addition, along with the arrival in rainy season, the silt that river is mingled with increases, to dynamic and static ring
Sealing surface produces bigger abrasion, and mechanical seal all can be caused to lose efficacy.
Publication No. CN 201661507U, publication date is that in December, 2010 Chinese patent literature of 01 day discloses one
The centrifugal multistage pump multiple centrifugal pump mechanical seal combined part of band cooling water washing, it by inlet segment, parts of bearings, fastening bolt nut, enter
Water section outer side seal circle, inlet segment inner seal circle, axle capsule body, machinery gland, pump shaft, machinery gland ring, machinery are close
Envelope, pump shaft axle sleeve composition, it is characterised in that: on pump shaft, it is set with pump shaft axle sleeve；It is sleeved on the mechanical seal on pump shaft axle sleeve
It is positioned at axle capsule body and machine sealed cover, is separately installed with the mechanical seal left side making axially location in mechanical seal arranged on left and right sides
Alignment pin and the right alignment pin of mechanical seal；Axle capsule body is connected by machine sealed cover connecting bolt with machine sealed cover, and
Install organic sealed cover sealing ring between the two additional；Axle capsule body is mounted to be clamped between inlet segment and parts of bearings, bearing portion
It is fastened together by fastening bolt nut between part and inlet segment, adds respectively between axle capsule body and inlet segment
Inlet segment outer side seal circle and inlet segment inner seal circle；Cooling water intake in axle capsule body, cooling water cavity body and cold
But water outlet is interconnected, and cooling water cavity body, flushing water import and flushing water export and be also connected；Axle capsule body is opened
Organic sealed cover is installed screwed hole and shuts down discharge outlet.
The centrifugal multistage pump multiple centrifugal pump mechanical seal combined part of band cooling water washing disclosed in this patent documentation, owing to structure designs
Unreasonable, partial impurities can be brought in machinery cavity and axle envelope gap by its inlet segment flushing liquor import, even if also only rinsing
Being to take away certain media, after life-time service, sealing effectiveness is poor.
Publication No. CN 203685667U, publication date is that the Chinese patent literature of on 07 02nd, 2014 discloses one
Horizontal centrifugal pump mechanical sealing, axle sleeve and pump are by axle with together with bonded, and machine envelope stationary ring and machine seal moving ring sleeve and be connected on axle
Set outside, forms friction pair, and machine envelope stationary seat is socketed in machine envelope stationary ring and machine envelope rotating ring outside is connected with the pump housing, machine envelope stationary seat
One end is provided with machine sealing flushing liquid entrance, it is characterised in that described machine sealing flushing liquid porch is provided with throttling stop valve, machine envelope stationary ring
One end relative with machine sealing flushing liquid entrance on seat is provided with the outlet of machine sealing flushing liquid, and the outlet of machine sealing flushing liquid is by reflux pipeline even
Being connected to pump porch, machine envelope rotating ring is connected with machine envelope rotating seat by many flexible compensation springs, machine envelope rotating seat socket
Outside axle sleeve.
Horizontal centrifugal pump mechanical sealing disclosed in this patent documentation, its machine sealing flushing is convection current trend, and flushing liquor is by pipe
Road returns to pump intake, and the impurity in flushing liquor easily rests on the complicated position of machine sealing chamber, causes residual or accumulated impurities in machine envelope,
The envelope abrasion of aggravation machine.
Summary of the invention
The present invention is in order to overcome the defect of above-mentioned prior art, it is provided that a kind of mechanical face seals of centrifugal pumps flusher, this
Bright, mechanical seal can either be played good cooling effect, be prevented from again deposited particles impurity on dynamic and static ring sealing face, have
Effect protection dynamic and static ring sealing face, reduces abrasion, improves sealing effectiveness, and then ensures the operation of centrifugal pump normal table.
The present invention is achieved through the following technical solutions:
A kind of mechanical face seals of centrifugal pumps flusher, including the flush pipe being connected on centrifugal pump, the liquid feeding end of flush pipe with from
Heart delivery side of pump end connects, the liquid outlet of flush pipe and the mechanical connection of centrifugal pump, it is characterised in that: in described flush pipe
Connecting and have tubular filter, Pressure gauge and restricting orifice, described tubular filter is near the port of export of centrifugal pump, described throttle orifice
Plate is provided with the first stop valve and the second stop valve, described first cut-off in the mechanical seal of centrifugal pump, described flush pipe
Valve is between the port of export and tubular filter of centrifugal pump, and described second stop valve is between Pressure gauge and restricting orifice.
Also include that suspension separator, described suspension separator one end are connected with the port of export of centrifugal pump, the other end and flushing
The liquid feeding end of pipe connects.
Described flush pipe includes supervisor, the first arm and the second arm, near first of the port of export side of centrifugal pump
The first stop valve, tubular filter, Pressure gauge and the second stop valve it is connected with in turn on pipe；Port of export side near centrifugal pump
The second arm on be connected with the first stop valve, tubular filter, Pressure gauge and the second stop valve in turn；First arm and second
Arm is arranged side by side, and on supervisor, connection has described restricting orifice.
Described restricting orifice is two, and a restricting orifice is arranged on the first arm, and another restricting orifice is arranged on
On second arm.
Being provided with heat tracing pipe on described first arm and the second arm, the helically wound formula of heat tracing pipe is arranged.
Being provided with cooling-part on described supervisor, cooling-part includes water tank, coil pipe and the bimetallic being arranged on water tank
Thermometer, coil pipe is arranged on the interior diapire of water tank, and bimetallic thermometer stretches to the interior diapire of water tank, and water tank is with supervisor even
Logical.
Be provided with Venturi tube on described supervisor, Venturi tube between cooling-part and mechanical seal, Venturi tube
Being made of one piece by contraction section, cylindrical section and expansion segment, contraction section is connected with supervisor by flange, expansion segment and mechanical seal
Connect.
Being provided with shunting disk on described expansion segment, shunting disk is detachable with expansion segment to be connected, and shunting disk is uniformly distributed
There are many jet pipes.
Connecting on described first arm and have the first elbow, the second arm connects the second elbow, the first elbow and second
Elbow is arranged diagonal.
Be provided with blow-down pipe on described first arm and the second arm, blow-down pipe be positioned at tubular filter and Pressure gauge it
Between.
Beneficial effects of the present invention is mainly manifested in following aspect:
One, the present invention, flush pipe connects and has tubular filter, Pressure gauge and restricting orifice, and tubular filter is near centrifugal pump
The port of export, restricting orifice, near the mechanical seal of centrifugal pump, flush pipe is provided with the first stop valve and the second stop valve,
One stop valve between the port of export and tubular filter of centrifugal pump, the second stop valve be positioned at Pressure gauge and restricting orifice it
Between, medium can be cut off by the first stop valve, it is simple to change flush pipe and clean tubular filter；Pressure gauge can be supervised at any time
Survey the change of flush pipe pipeline pressure；During use, whole flusher is arranged on centrifugal pump, from the port of export of centrifugal pump out
Medium flow to the mechanical seal of centrifugal pump through flush pipe as flushing liquor, mechanical seal is rinsed, returns again to centrifugal pump
In, form a flush loop；Having tubular filter owing to connecting in flush pipe, tubular filter can will mix in flushing liquor
Solid particle filter, then through restricting orifice, the pipeline flow of flush pipe is defined, can effectively reduce flush pipe
Pipeline pressure, simultaneously work as the effect of current limliting blood pressure lowering, make to eventually enter into the flushing liquor stability of flow of mechanical seal and clean, both
Mechanical seal can be played cooling effect, it is ensured that mechanical seal chamber medium-high viscosity, low cloud point medium will not separate out, and also avoid
The intensification under the running up of axle of colloid after precipitation, coking and by mechanical seal locking, damage；It is prevented from again dynamic and static ring close
Deposited particles impurity on front cover, effectively protection dynamic and static ring sealing face, improve sealing effectiveness, and then ensure centrifugal pump normal table
Run.
Two, the present invention, also includes that suspension separator, suspension separator one end are connected with the port of export of centrifugal pump, the other end
It is connected with the liquid feeding end of flush pipe, solid particle in flushing liquor can be separated by suspension separator, make entrance postorder
Flushing liquor in tubular filter is cleaner, it is possible to the most blocked after ensureing tubular filter life-time service, and then ensures flushing
The cleanout fluid granule free from foreign meter of mechanical seal, reduces mechanical seal loss, makes mechanical seal keep good sealing for a long time
Effect.
Three, the present invention, flush pipe includes supervisor, the first arm and the second arm, near the port of export side of centrifugal pump
The first stop valve, tubular filter, Pressure gauge and the second stop valve it is connected with in turn on first arm；Near centrifugal delivery side of pump
It is connected with the first stop valve, tubular filter, Pressure gauge and the second stop valve in turn on second arm of end side；First arm
Being arranged side by side with the second arm, on supervisor, connection has described restricting orifice, forms the flushing line of two-way parallel connection distribution, when arbitrarily
When No. one tubular filter occurs blocking, the manometric pressure on this road will decline, now by the first cut-off on this road
Valve and the second stop valve are closed, the tubular filter on this road the most capable of washing；And the flushing line on another road can keep simultaneously
Being carried out mechanical seal, reduce mechanical seal loss, and then the service life of prolongation centrifugal pump, whole process is without stopping
Centrifugal pump, it is possible to ensure the work efficiency of centrifugal pump.
Four, the present invention, restricting orifice is two, and a restricting orifice is arranged on the first arm, another restricting orifice
Being arranged on the second arm, by arranging two restricting orifices, two restricting orifices can the most independently control this road flush pipe
Pipeline flow, reduce the pipeline pressure of this road flush pipe, current limliting antihypertensive effect is obvious, is beneficial to carry out mechanical seal comprehensively
Rinse.
Five, being provided with heat tracing pipe on the present invention, the first arm and the second arm, heat tracing pipe can be to rushing in flush pipe
Washing liquid heats, and prevents full-bodied flushing liquor from hardening, and improves the mobility of high viscosity flushing liquor, and heat tracing pipe is helically wound
Formula is arranged, not only increases heat tracing pipe and the first arm and the contact area of the second arm, and it is good to contact uniformity, it is possible to make
First arm and the second arm are heated evenly, and improve the mobility of high viscosity flushing liquor further, ensure and rush mechanical seal
Wash effect.
Six, the present invention, supervisor is provided with cooling-part, and cooling-part includes water tank, coil pipe and is arranged on water tank
Bimetallic thermometer, coil pipe is arranged on the interior diapire of water tank, and bimetallic thermometer stretches to the interior diapire of water tank, water tank and master
Pipe connects, and coil pipe can play the effect that water-bath heat is changed in water tank, to regulate the temperature of flushing liquor, pass through bimetallic thermometer
Can intuitively observe water temperature in water tank such that it is able to ensure that the flushing liquor being rinsed mechanical seal has suitable temperature,
Reduce dynamic and static ring sealing face and produce pattern cracking, effectively prevent high temperature from bursting phenomenon and produce, and then extend the use longevity of centrifugal pump
Life.
Seven, the present invention, supervisor is provided with Venturi tube, and Venturi tube is between cooling-part and mechanical seal, civilian
Venturi is made of one piece by contraction section, cylindrical section and expansion segment, and contraction section is connected with supervisor by flange, expansion segment and machine
Tool is tightly connected, and uses Venturi tube, is carried further from expansion segment flushing liquor flow velocity out after contraction section, cylindrical section
Height, flushing liquor pressure is more preferable, it is possible to mechanical seal is carried out good flushing.
Eight, the present invention, expansion segment is provided with shunting disk, and shunting disk is detachable with expansion segment to be connected, and changes and cleans all
The most convenient, shunting disk is evenly distributed with many jet pipes, further increases the flushing pressure of flushing liquor, and can be equal
Even is rinsed mechanical seal, and developing result is more preferable.
Nine, the present invention, the first arm connects and has the first elbow, and the second arm connects the second elbow, the first elbow
It is arranged diagonal with the second elbow, by arranging the first elbow and the second elbow, it is possible to reduce flushing liquor on the corner suffered
Resistance, ensures that flushing liquor has good mobility, and then is beneficial to ensure the developing result to mechanical seal.
Ten, being provided with blow-down pipe on the present invention, the first arm and the second arm, blow-down pipe is positioned at tubular filter and pressure
Between power table, when needs clean tubular filter, the first stop valve and the second stop valve are all closed, can be by flush pipe pipeline
Interior pressure is vented by blow-down pipe, then cleans tubular filter, would not there is pressure in flush pipe pipeline, cleans and more pacifies
The most convenient.
Accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, wherein:
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of the embodiment of the present invention 2；
Fig. 3 is the structural representation of the embodiment of the present invention 3；
Fig. 4 is the structural representation of the embodiment of the present invention 4；
Fig. 5 is the structural representation of the embodiment of the present invention 5；
Fig. 6 is the structural representation of Venturi tube in the embodiment of the present invention 6；
Fig. 7 is the first arm and the structural representation of the second arm in the embodiment of the present invention 7；
Labelling in figure: 1, flush pipe, 2, the port of export, 3, mechanical seal, 4, tubular filter, 5, Pressure gauge, 6, restricting orifice, 7,
First stop valve, the 8, second stop valve, 9, suspension separator, 10, supervisor, the 11, first arm, the 12, second arm, 13, heat tracing
Pipe, 14, water tank, 15, coil pipe, 16, bimetallic thermometer, 17, Venturi tube, 18, contraction section, 19, cylindrical section, 20, expansion segment,
21, shunting disk, 22, jet pipe, the 23, first elbow, the 24, second elbow, 25, blow-down pipe.
Detailed description of the invention
Embodiment 1
See Fig. 1, a kind of mechanical face seals of centrifugal pumps flusher, including the flush pipe 1 being connected on centrifugal pump, flush pipe 1
Liquid feeding end is connected with the port of export 2 of centrifugal pump, and the liquid outlet of flush pipe 1 is connected with the mechanical seal 3 of centrifugal pump, described flush pipe
Connecting on 1 and have tubular filter 4, Pressure gauge 5 and restricting orifice 6, described tubular filter 4 is near the port of export 2 of centrifugal pump, institute
State the restricting orifice 6 mechanical seal 3 near centrifugal pump, described flush pipe 1 be provided with the first stop valve 7 and the second stop valve 8,
Described first stop valve 7 is between the port of export 2 and tubular filter 4 of centrifugal pump, and described second stop valve 8 is positioned at Pressure gauge
Between 5 and restricting orifice 6.
The present embodiment is most basic embodiment, and flush pipe connects tubular filter, Pressure gauge and restricting orifice,
Tubular filter is near the port of export of centrifugal pump, and restricting orifice, near the mechanical seal of centrifugal pump, flush pipe is provided with first
Stop valve and the second stop valve, the first stop valve between the port of export and tubular filter of centrifugal pump, the second stop valve position
Between Pressure gauge and restricting orifice, medium can be cut off by the first stop valve, it is simple to change flush pipe and clean tubular type mistake
Filter；Pressure gauge can monitor the change of flush pipe pipeline pressure at any time；During use, whole flusher is arranged on centrifugal pump
On, it flow to the mechanical seal of centrifugal pump through flush pipe as flushing liquor from the port of export of centrifugal pump medium out, close to machinery
Envelope is rinsed, and returns again in centrifugal pump, forms a flush loop；Tubular filter, tubular type is had owing to connecting in flush pipe
The solid particle mixed in flushing liquor can be filtered by filter, then carries out the pipeline flow of flush pipe through restricting orifice
Limit, can effectively reduce the pipeline pressure of flush pipe, simultaneously work as the effect of current limliting blood pressure lowering, make to eventually enter into mechanical seal
Flushing liquor stability of flow and clean, can either play cooling effect to mechanical seal, it is ensured that mechanical seal chamber medium-high viscosity, low
Cloud point medium will not separate out, also avoid separate out after colloid intensification under the running up of axle, coking and by mechanical seal locking,
Damage；Being prevented from again deposited particles impurity on dynamic and static ring sealing face, effectively protection dynamic and static ring sealing face, improves sealing effectiveness,
And then ensure the operation of centrifugal pump normal table.
Embodiment 2
See Fig. 2, a kind of mechanical face seals of centrifugal pumps flusher, including the flush pipe 1 being connected on centrifugal pump, flush pipe 1
Liquid feeding end is connected with the port of export 2 of centrifugal pump, and the liquid outlet of flush pipe 1 is connected with the mechanical seal 3 of centrifugal pump, described flush pipe
Connecting on 1 and have tubular filter 4, Pressure gauge 5 and restricting orifice 6, described tubular filter 4 is near the port of export 2 of centrifugal pump, institute
State the restricting orifice 6 mechanical seal 3 near centrifugal pump, described flush pipe 1 be provided with the first stop valve 7 and the second stop valve 8,
Described first stop valve 7 is between the port of export 2 and tubular filter 4 of centrifugal pump, and described second stop valve 8 is positioned at Pressure gauge
Between 5 and restricting orifice 6.
Also include that suspension separator 9, described suspension separator 9 one end are connected with the port of export 2 of centrifugal pump, the other end and punching
The liquid feeding end washing pipe 1 connects.
Described flush pipe 1 includes being responsible for the 10, first arm 11 and the second arm 12, near the port of export 2 side of centrifugal pump
The first arm 11 on be connected with the first stop valve 7, tubular filter 4, Pressure gauge 5 and the second stop valve 8 in turn；Near centrifugal
The first stop valve 7, tubular filter 4, Pressure gauge 5 and second it is connected with in turn on second arm 12 of delivery side of pump end 2 side
Stop valve 8；First arm 11 and the second arm 12 are arranged side by side, and supervisor 10 connects described restricting orifice 6.
The present embodiment is a better embodiment, also includes that suspension separator, suspension separator one end go out with centrifugal pump
Mouth end connects, and the other end is connected with the liquid feeding end of flush pipe, can be separated by solid particle in flushing liquor by suspension separator
Out, make the flushing liquor in entrance postorder tubular filter cleaner, it is possible to not to be blocked after ensureing tubular filter life-time service
Plug, and then ensure the cleanout fluid granule free from foreign meter rinsing mechanical seal, reduce mechanical seal loss, make mechanical seal long-time
Keep good sealing effectiveness.Flush pipe includes supervisor, the first arm and the second arm, near the port of export side of centrifugal pump
The first stop valve, tubular filter, Pressure gauge and the second stop valve it is connected with in turn on first arm；Near centrifugal delivery side of pump
It is connected with the first stop valve, tubular filter, Pressure gauge and the second stop valve in turn on second arm of end side；First arm
Being arranged side by side with the second arm, on supervisor, connection has described restricting orifice, forms the flushing line of two-way parallel connection distribution, when arbitrarily
When No. one tubular filter occurs blocking, the manometric pressure on this road will decline, now by the first cut-off on this road
Valve and the second stop valve are closed, the tubular filter on this road the most capable of washing；And the flushing line on another road can keep simultaneously
Being carried out mechanical seal, reduce mechanical seal loss, and then the service life of prolongation centrifugal pump, whole process is without stopping
Centrifugal pump, it is possible to ensure the work efficiency of centrifugal pump.
Embodiment 3
See Fig. 3, a kind of mechanical face seals of centrifugal pumps flusher, including the flush pipe 1 being connected on centrifugal pump, flush pipe 1
Liquid feeding end is connected with the port of export 2 of centrifugal pump, and the liquid outlet of flush pipe 1 is connected with the mechanical seal 3 of centrifugal pump, described flush pipe
Connecting on 1 and have tubular filter 4, Pressure gauge 5 and restricting orifice 6, described tubular filter 4 is near the port of export 2 of centrifugal pump, institute
State the restricting orifice 6 mechanical seal 3 near centrifugal pump, described flush pipe 1 be provided with the first stop valve 7 and the second stop valve 8,
Described first stop valve 7 is between the port of export 2 and tubular filter 4 of centrifugal pump, and described second stop valve 8 is positioned at Pressure gauge
Between 5 and restricting orifice 6.
Also include that suspension separator 9, described suspension separator 9 one end are connected with the port of export 2 of centrifugal pump, the other end and punching
The liquid feeding end washing pipe 1 connects.
Described flush pipe 1 includes being responsible for the 10, first arm 11 and the second arm 12, near the port of export 2 side of centrifugal pump
The first arm 11 on be connected with the first stop valve 7, tubular filter 4, Pressure gauge 5 and the second stop valve 8 in turn；Near centrifugal
The first stop valve 7, tubular filter 4, Pressure gauge 5 and second it is connected with in turn on second arm 12 of delivery side of pump end 2 side
Stop valve 8；First arm 11 and the second arm 12 are arranged side by side.
Described restricting orifice 6 is two, and a restricting orifice 6 is arranged on the first arm 11, and another restricting orifice 6 sets
Put on the second arm 12.
It is provided with heat tracing pipe 13, heat tracing pipe 13 helically wound formula cloth on described first arm 11 and the second arm 12
Put.
The present embodiment is another better embodiment, and restricting orifice is two, and a restricting orifice is arranged on the first arm
On, another restricting orifice is arranged on the second arm, and by arranging two restricting orifices, two restricting orifices can be the most only
The vertical pipeline flow controlling this road flush pipe, reduces the pipeline pressure of this road flush pipe, and current limliting antihypertensive effect is obvious, is beneficial to machine
Tool seals and comprehensively rinses.Being provided with heat tracing pipe on first arm and the second arm, heat tracing pipe can be in flush pipe
Flushing liquor heat, prevent full-bodied flushing liquor from hardening, improve high viscosity flushing liquor mobility, heat tracing pipe is helically
Wound form is arranged, not only increases heat tracing pipe and the first arm and the contact area of the second arm, and it is good to contact uniformity, energy
Enough make the first arm and the second arm be heated evenly, improve the mobility of high viscosity flushing liquor further, ensure mechanical seal
Developing result.
Embodiment 4
See Fig. 4, a kind of mechanical face seals of centrifugal pumps flusher, including the flush pipe 1 being connected on centrifugal pump, flush pipe 1
Liquid feeding end is connected with the port of export 2 of centrifugal pump, and the liquid outlet of flush pipe 1 is connected with the mechanical seal 3 of centrifugal pump, described flush pipe
Connecting on 1 and have tubular filter 4, Pressure gauge 5 and restricting orifice 6, described tubular filter 4 is near the port of export 2 of centrifugal pump, institute
State the restricting orifice 6 mechanical seal 3 near centrifugal pump, described flush pipe 1 be provided with the first stop valve 7 and the second stop valve 8,
Described first stop valve 7 is between the port of export 2 and tubular filter 4 of centrifugal pump, and described second stop valve 8 is positioned at Pressure gauge
Between 5 and restricting orifice 6.
Also include that suspension separator 9, described suspension separator 9 one end are connected with the port of export 2 of centrifugal pump, the other end and punching
The liquid feeding end washing pipe 1 connects.
Described flush pipe 1 includes being responsible for the 10, first arm 11 and the second arm 12, near the port of export 2 side of centrifugal pump
The first arm 11 on be connected with the first stop valve 7, tubular filter 4, Pressure gauge 5 and the second stop valve 8 in turn；Near centrifugal
The first stop valve 7, tubular filter 4, Pressure gauge 5 and second it is connected with in turn on second arm 12 of delivery side of pump end 2 side
Stop valve 8；First arm 11 and the second arm 12 are arranged side by side.
Described restricting orifice 6 is two, and a restricting orifice 6 is arranged on the first arm 11, and another restricting orifice 6 sets
Put on the second arm 12.
It is provided with heat tracing pipe 13, heat tracing pipe 13 helically wound formula cloth on described first arm 11 and the second arm 12
Put.
Being provided with cooling-part on described supervisor 10, cooling-part includes water tank 14, coil pipe 15 and is arranged on water tank 14
Bimetallic thermometer 16, coil pipe 15 is arranged on the interior diapire of water tank 14, and bimetallic thermometer 16 stretches to the interior of water tank 14
Diapire, water tank 14 connects with supervisor 10.
The present embodiment is another better embodiment, and supervisor is provided with cooling-part, and cooling-part includes water tank, coil pipe
With the bimetallic thermometer being arranged on water tank, coil pipe is arranged on the interior diapire of water tank, and bimetallic thermometer stretches to water tank
Interior diapire, water tank with supervisor connect, coil pipe can play the effect that water-bath heat is changed in water tank, to regulate the temperature of flushing liquor
Degree, can intuitively observe water temperature in water tank by bimetallic thermometer such that it is able to ensure that be rinsed mechanical seal rushes
Washing liquid has suitable temperature, reduces dynamic and static ring sealing face and produces pattern cracking, effectively prevents high temperature from bursting phenomenon and produces, and then
Extend the service life of centrifugal pump.
Embodiment 5
See Fig. 5, a kind of mechanical face seals of centrifugal pumps flusher, including the flush pipe 1 being connected on centrifugal pump, flush pipe 1
Liquid feeding end is connected with the port of export 2 of centrifugal pump, and the liquid outlet of flush pipe 1 is connected with the mechanical seal 3 of centrifugal pump, described flush pipe
Connecting on 1 and have tubular filter 4, Pressure gauge 5 and restricting orifice 6, described tubular filter 4 is near the port of export 2 of centrifugal pump, institute
State the restricting orifice 6 mechanical seal 3 near centrifugal pump, described flush pipe 1 be provided with the first stop valve 7 and the second stop valve 8,
Described first stop valve 7 is between the port of export 2 and tubular filter 4 of centrifugal pump, and described second stop valve 8 is positioned at Pressure gauge
Between 5 and restricting orifice 6.
Also include that suspension separator 9, described suspension separator 9 one end are connected with the port of export 2 of centrifugal pump, the other end and punching
The liquid feeding end washing pipe 1 connects.
Described flush pipe 1 includes being responsible for the 10, first arm 11 and the second arm 12, near the port of export 2 side of centrifugal pump
The first arm 11 on be connected with the first stop valve 7, tubular filter 4, Pressure gauge 5 and the second stop valve 8 in turn；Near centrifugal
The first stop valve 7, tubular filter 4, Pressure gauge 5 and second it is connected with in turn on second arm 12 of delivery side of pump end 2 side
Stop valve 8；First arm 11 and the second arm 12 are arranged side by side.
Described restricting orifice 6 is two, and a restricting orifice 6 is arranged on the first arm 11, and another restricting orifice 6 sets
Put on the second arm 12.
It is provided with heat tracing pipe 13, heat tracing pipe 13 helically wound formula cloth on described first arm 11 and the second arm 12
Put.
Being provided with cooling-part on described supervisor 10, cooling-part includes water tank 14, coil pipe 15 and is arranged on water tank 14
Bimetallic thermometer 16, coil pipe 15 is arranged on the interior diapire of water tank 14, and bimetallic thermometer 16 stretches to the interior of water tank 14
Diapire, water tank 14 connects with supervisor 10.
Being provided with Venturi tube 17 on described supervisor 10, Venturi tube 17 is between cooling-part and mechanical seal 3, civilian
Venturi 17 is made of one piece by contraction section 18, cylindrical section 19 and expansion segment 20, and contraction section 18 is by flange with supervisor 10 even
Connecing, expansion segment 20 is connected with mechanical seal 3.
The present embodiment is another better embodiment, and supervisor is provided with Venturi tube, and Venturi tube is positioned at cooling-part
And between mechanical seal, Venturi tube is made of one piece by contraction section, cylindrical section and expansion segment, contraction section passes through flange and master
Pipe connects, expansion segment and mechanical connection, uses Venturi tube, from expansion segment flushing out after contraction section, cylindrical section
Flow velocity is further enhanced, and flushing liquor pressure is more preferable, it is possible to mechanical seal is carried out good flushing.
Embodiment 6
See Fig. 5 and Fig. 6, a kind of mechanical face seals of centrifugal pumps flusher, including the flush pipe 1 being connected on centrifugal pump, rinse
The liquid feeding end of pipe 1 is connected with the port of export 2 of centrifugal pump, and the liquid outlet of flush pipe 1 is connected with the mechanical seal 3 of centrifugal pump, described
Connecting in flush pipe 1 and have tubular filter 4, Pressure gauge 5 and restricting orifice 6, described tubular filter 4 is near centrifugal delivery side of pump
End 2, described restricting orifice 6 is provided with the first stop valve 7 and second section in the mechanical seal 3 of centrifugal pump, described flush pipe 1
Only valve 8, described first stop valve 7 is between the port of export 2 and tubular filter 4 of centrifugal pump, and described second stop valve 8 is positioned at
Between Pressure gauge 5 and restricting orifice 6.
Also include that suspension separator 9, described suspension separator 9 one end are connected with the port of export 2 of centrifugal pump, the other end and punching
The liquid feeding end washing pipe 1 connects.
Described flush pipe 1 includes being responsible for the 10, first arm 11 and the second arm 12, near the port of export 2 side of centrifugal pump
The first arm 11 on be connected with the first stop valve 7, tubular filter 4, Pressure gauge 5 and the second stop valve 8 in turn；Near centrifugal
The first stop valve 7, tubular filter 4, Pressure gauge 5 and second it is connected with in turn on second arm 12 of delivery side of pump end 2 side
Stop valve 8；First arm 11 and the second arm 12 are arranged side by side.
Described restricting orifice 6 is two, and a restricting orifice 6 is arranged on the first arm 11, and another restricting orifice 6 sets
Put on the second arm 12.
It is provided with heat tracing pipe 13, heat tracing pipe 13 helically wound formula cloth on described first arm 11 and the second arm 12
Put.
Being provided with cooling-part on described supervisor 10, cooling-part includes water tank 14, coil pipe 15 and is arranged on water tank 14
Bimetallic thermometer 16, coil pipe 15 is arranged on the interior diapire of water tank 14, and bimetallic thermometer 16 stretches to the interior of water tank 14
Diapire, water tank 14 connects with supervisor 10.
Being provided with Venturi tube 17 on described supervisor 10, Venturi tube 17 is between cooling-part and mechanical seal 3, civilian
Venturi 17 is made of one piece by contraction section 18, cylindrical section 19 and expansion segment 20, and contraction section 18 is by flange with supervisor 10 even
Connecing, expansion segment 20 is connected with mechanical seal 3.
Being provided with shunting disk 21 on described expansion segment 20, shunting disk 21 is detachable with expansion segment 20 to be connected, shunting disk 21
On be evenly distributed with many jet pipes 22.
The present embodiment is another better embodiment, and expansion segment is provided with shunting disk, and shunting disk is detachable with expansion segment
Formula connects, and changes cleaning the most convenient, shunting disk is evenly distributed with many jet pipes, further increases rushing of flushing liquor
Washing pressure, and can be rinsed mechanical seal uniformly, developing result is more preferable.
Embodiment 7
Seeing Fig. 5-Fig. 7, a kind of mechanical face seals of centrifugal pumps flusher, including the flush pipe 1 being connected on centrifugal pump, flush pipe
The liquid feeding end of 1 is connected with the port of export 2 of centrifugal pump, and the liquid outlet of flush pipe 1 is connected with the mechanical seal 3 of centrifugal pump, described punching
Washing to connect on pipe 1 and have tubular filter 4, Pressure gauge 5 and restricting orifice 6, described tubular filter 4 is near the port of export of centrifugal pump
2, described restricting orifice 6 is provided with the first stop valve 7 and the second cut-off in the mechanical seal 3 of centrifugal pump, described flush pipe 1
Valve 8, described first stop valve 7 is between the port of export 2 and tubular filter 4 of centrifugal pump, and described second stop valve 8 is positioned at pressure
Between power table 5 and restricting orifice 6.
Also include that suspension separator 9, described suspension separator 9 one end are connected with the port of export 2 of centrifugal pump, the other end and punching
The liquid feeding end washing pipe 1 connects.
Described flush pipe 1 includes being responsible for the 10, first arm 11 and the second arm 12, near the port of export 2 side of centrifugal pump
The first arm 11 on be connected with the first stop valve 7, tubular filter 4, Pressure gauge 5 and the second stop valve 8 in turn；Near centrifugal
The first stop valve 7, tubular filter 4, Pressure gauge 5 and second it is connected with in turn on second arm 12 of delivery side of pump end 2 side
Stop valve 8；First arm 11 and the second arm 12 are arranged side by side.
Described restricting orifice 6 is two, and a restricting orifice 6 is arranged on the first arm 11, and another restricting orifice 6 sets
Put on the second arm 12.
It is provided with heat tracing pipe 13, heat tracing pipe 13 helically wound formula cloth on described first arm 11 and the second arm 12
Put.
Being provided with cooling-part on described supervisor 10, cooling-part includes water tank 14, coil pipe 15 and is arranged on water tank 14
Bimetallic thermometer 16, coil pipe 15 is arranged on the interior diapire of water tank 14, and bimetallic thermometer 16 stretches to the interior of water tank 14
Diapire, water tank 14 connects with supervisor 10.
Being provided with Venturi tube 17 on described supervisor 10, Venturi tube 17 is between cooling-part and mechanical seal 3, civilian
Venturi 17 is made of one piece by contraction section 18, cylindrical section 19 and expansion segment 20, and contraction section 18 is by flange with supervisor 10 even
Connecing, expansion segment 20 is connected with mechanical seal 3.
Being provided with shunting disk 21 on described expansion segment 20, shunting disk 21 is detachable with expansion segment 20 to be connected, shunting disk 21
On be evenly distributed with many jet pipes 22.
Connecting on described first arm 11 and have the first elbow 23, the second arm 12 connects the second elbow 24, and first is curved
23 and second elbow 24 be arranged diagonal.
Being provided with blow-down pipe 25 on described first arm 11 and the second arm 12, blow-down pipe 25 is positioned at tubular filter 4
And between Pressure gauge 5.
The present embodiment is preferred forms, and flush pipe connects tubular filter, Pressure gauge and restricting orifice, tubular type
Filter is near the port of export of centrifugal pump, and restricting orifice, near the mechanical seal of centrifugal pump, flush pipe is provided with the first cut-off
Valve and the second stop valve, the first stop valve is between the port of export and tubular filter of centrifugal pump, and the second stop valve is positioned at pressure
Between power table and restricting orifice, medium can be cut off by the first stop valve, it is simple to change flush pipe and clean tubular filter；
Pressure gauge can monitor the change of flush pipe pipeline pressure at any time；During use, whole flusher is arranged on centrifugal pump, from from
The medium that heart delivery side of pump brings out flow to the mechanical seal of centrifugal pump as flushing liquor through flush pipe, rushes mechanical seal
Wash, return again in centrifugal pump, form a flush loop；Tubular filter, tubular filter energy is had owing to connecting in flush pipe
Enough the solid particle mixed in flushing liquor is filtered, then through restricting orifice, the pipeline flow of flush pipe is defined, can
Effectively to reduce the pipeline pressure of flush pipe, simultaneously work as the effect of current limliting blood pressure lowering, make to eventually enter into the flushing liquor of mechanical seal
Stability of flow and clean, can either play cooling effect to mechanical seal, it is ensured that mechanical seal chamber medium-high viscosity, low cloud point are situated between
Matter will not separate out, also avoid separate out after colloid intensification under the running up of axle, coking and by mechanical seal locking, damage；
Being prevented from again deposited particles impurity on dynamic and static ring sealing face, effectively protection dynamic and static ring sealing face, improves sealing effectiveness, Jin Erbao
The operation of barrier centrifugal pump normal table.Connecting on first arm and have the first elbow, the second arm connects the second elbow, and first
Elbow and the second elbow are arranged diagonal, by arranging the first elbow and the second elbow, it is possible to reduce flushing liquor on the corner institute
The resistance being subject to, ensures that flushing liquor has good mobility, and then is beneficial to ensure the developing result to mechanical seal.First arm
Be provided with blow-down pipe on the second arm, blow-down pipe between tubular filter and Pressure gauge, when needs clean tubular type mistake
During filter, the first stop valve and the second stop valve are all closed, and can be vented by blow-down pipe by the pressure in flush pipe pipeline, then
Clean tubular filter, pressure would not be there is in flush pipe pipeline, clean more safe and convenient.
Claims (10)
1. a mechanical face seals of centrifugal pumps flusher, including the flush pipe (1) being connected on centrifugal pump, entering of flush pipe (1)
Liquid end is connected with the port of export (2) of centrifugal pump, and the liquid outlet of flush pipe (1) is connected with the mechanical seal (3) of centrifugal pump, its feature
It is: the upper connection of described flush pipe (1) has tubular filter (4), Pressure gauge (5) and restricting orifice (6), described tubular filter
(4) near the port of export (2) of centrifugal pump, described restricting orifice (6) is near the mechanical seal (3) of centrifugal pump, described flush pipe (1)
On be provided with the first stop valve (7) and the second stop valve (8), described first stop valve (7) be positioned at the port of export (2) of centrifugal pump with
Between tubular filter (4), described second stop valve (8) is positioned between Pressure gauge (5) and restricting orifice (6).
A kind of mechanical face seals of centrifugal pumps flusher the most according to claim 1, it is characterised in that: also include that suspension separates
Device (9), described suspension separator (9) one end is connected with the port of export (2) of centrifugal pump, the other end and the liquid feeding end of flush pipe (1)
Connect.
A kind of mechanical face seals of centrifugal pumps flusher the most according to claim 2, it is characterised in that: described flush pipe (1)
Including supervisor (10), the first arm (11) and the second arm (12), near the first arm of the port of export (2) side of centrifugal pump
(11) the first stop valve (7), tubular filter (4), Pressure gauge (5) and the second stop valve (8) it are connected with in turn；Near centrifugal
The first stop valve (7), tubular filter (4), Pressure gauge it is connected with in turn on second arm (12) of delivery side of pump end (2) side
(5) and the second stop valve (8)；First arm (11) and the second arm (12) are arranged side by side, and the upper connection of supervisor (10) has described joint
Discharge orifice plate (6).
A kind of mechanical face seals of centrifugal pumps flusher the most according to claim 3, it is characterised in that: described restricting orifice
(6) being two, a restricting orifice (6) is arranged on the first arm (11), and another restricting orifice (6) is arranged on the second arm
(12) on.
A kind of mechanical face seals of centrifugal pumps flusher the most according to claim 4, it is characterised in that: described first arm
(11) being provided with heat tracing pipe (13) on and the second arm (12), heat tracing pipe (13) helically wound formula is arranged.
A kind of mechanical face seals of centrifugal pumps flusher the most according to claim 5, it is characterised in that: on described supervisor (10)
Being provided with cooling-part, cooling-part includes water tank (14), coil pipe (15) and the bimetallic thermometer being arranged on water tank (14)
(16), coil pipe (15) is arranged on the interior diapire of water tank (14), and bimetallic thermometer (16) stretches to the interior diapire of water tank (14),
Water tank (14) connects with supervisor (10).
A kind of mechanical face seals of centrifugal pumps flusher the most according to claim 6, it is characterised in that: on described supervisor (10)
Being provided with Venturi tube (17), Venturi tube (17) is positioned between cooling-part and mechanical seal (3), and Venturi tube (17) is by receiving
Contracting section (18), cylindrical section (19) and expansion segment (20) are made of one piece, and contraction section (18) is connected with supervisor (10) by flange,
Expansion segment (20) is connected with mechanical seal (3).
A kind of mechanical face seals of centrifugal pumps flusher the most according to claim 7, it is characterised in that: described expansion segment (20)
On be provided with shunting disk (21), shunting disk (21) is detachable with expansion segment (20) to be connected, and shunting disk is evenly distributed with on (21)
Many jet pipes (22).
A kind of mechanical face seals of centrifugal pumps flusher the most according to claim 3, it is characterised in that: described first arm
(11) upper connection has the first elbow (23), and the upper connection of the second arm (12) has the second elbow (24), the first elbow (23) and second
Elbow (24) is arranged diagonal.
A kind of mechanical face seals of centrifugal pumps flusher the most according to claim 3, it is characterised in that: described first arm
(11) being provided with blow-down pipe (25) on and the second arm (12), blow-down pipe (25) is positioned at tubular filter (4) and Pressure gauge (5)
Between.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610603735.2A CN106122108B (en) | 2016-07-28 | 2016-07-28 | A kind of mechanical face seals of centrifugal pumps flusher |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610603735.2A CN106122108B (en) | 2016-07-28 | 2016-07-28 | A kind of mechanical face seals of centrifugal pumps flusher |
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| Publication Number | Publication Date |
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| CN106122108A true CN106122108A (en) | 2016-11-16 |
| CN106122108B CN106122108B (en) | 2019-05-10 |
Family
ID=57290470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610603735.2A Active CN106122108B (en) | 2016-07-28 | 2016-07-28 | A kind of mechanical face seals of centrifugal pumps flusher |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593930A (en) * | 2016-12-15 | 2017-04-26 | 上海工程技术大学 | Suspension type centrifugal pump |
| CN107368048A (en) * | 2017-06-27 | 2017-11-21 | 江苏大学镇江流体工程装备技术研究院 | A kind of groundwater supply pump station structure control system and its design method |
| CN107390520A (en) * | 2017-06-27 | 2017-11-24 | 江苏大学镇江流体工程装备技术研究院 | A kind of fire fighting supply pumping station controlling system and its design method |
| CN110685920A (en) * | 2019-10-31 | 2020-01-14 | 上海佰诺泵阀有限公司 | Centrifugal pump for conveying medium containing particles |
| CN111420446A (en) * | 2020-04-14 | 2020-07-17 | 山东京博中聚新材料有限公司 | Colloidal particle pump with pipe network type colloidal particle water-tight seal flusher |
| CN111692123A (en) * | 2020-05-09 | 2020-09-22 | 青海盐湖工业股份有限公司 | Double-end-face mechanical sealing device for pump |
| CN112682358A (en) * | 2020-12-09 | 2021-04-20 | 江苏大学镇江流体工程装备技术研究院 | Safe and stable high-temperature-resistant hot water circulating pump system |
| CN113289968A (en) * | 2021-04-07 | 2021-08-24 | 岭东核电有限公司 | Spent fuel assembly treatment equipment and method |
| CN113623276A (en) * | 2021-09-07 | 2021-11-09 | 云南大红山管道有限公司 | Machine seal flushing water bearing cooling water supply system of centrifugal pump and control method |
| CN114483590A (en) * | 2022-01-28 | 2022-05-13 | 浙江水泵总厂有限公司 | Machine seals washes structure and has its airtight pipeline system in vacuum |
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| CN106593930A (en) * | 2016-12-15 | 2017-04-26 | 上海工程技术大学 | Suspension type centrifugal pump |
| CN107368048A (en) * | 2017-06-27 | 2017-11-21 | 江苏大学镇江流体工程装备技术研究院 | A kind of groundwater supply pump station structure control system and its design method |
| CN107390520A (en) * | 2017-06-27 | 2017-11-24 | 江苏大学镇江流体工程装备技术研究院 | A kind of fire fighting supply pumping station controlling system and its design method |
| CN107368048B (en) * | 2017-06-27 | 2020-07-03 | 江苏大学镇江流体工程装备技术研究院 | Design method of underground water supply pump station structure control system |
| CN110685920A (en) * | 2019-10-31 | 2020-01-14 | 上海佰诺泵阀有限公司 | Centrifugal pump for conveying medium containing particles |
| CN111420446A (en) * | 2020-04-14 | 2020-07-17 | 山东京博中聚新材料有限公司 | Colloidal particle pump with pipe network type colloidal particle water-tight seal flusher |
| CN111692123A (en) * | 2020-05-09 | 2020-09-22 | 青海盐湖工业股份有限公司 | Double-end-face mechanical sealing device for pump |
| CN112682358A (en) * | 2020-12-09 | 2021-04-20 | 江苏大学镇江流体工程装备技术研究院 | Safe and stable high-temperature-resistant hot water circulating pump system |
| CN112682358B (en) * | 2020-12-09 | 2022-04-08 | 江苏大学镇江流体工程装备技术研究院 | Safe and stable high-temperature-resistant hot water circulating pump system |
| CN113289968A (en) * | 2021-04-07 | 2021-08-24 | 岭东核电有限公司 | Spent fuel assembly treatment equipment and method |
| CN113289968B (en) * | 2021-04-07 | 2022-04-12 | 岭东核电有限公司 | Spent fuel assembly treatment equipment and method |
| CN113623276A (en) * | 2021-09-07 | 2021-11-09 | 云南大红山管道有限公司 | Machine seal flushing water bearing cooling water supply system of centrifugal pump and control method |
| CN114483590A (en) * | 2022-01-28 | 2022-05-13 | 浙江水泵总厂有限公司 | Machine seals washes structure and has its airtight pipeline system in vacuum |
| 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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