CN109741847A - A hot spot backwashing device for instrumentation pipes of main pipelines of nuclear power plants - Google Patents
A hot spot backwashing device for instrumentation pipes of main pipelines of nuclear power plants Download PDFInfo
- Publication number
- CN109741847A CN109741847A CN201811580350.4A CN201811580350A CN109741847A CN 109741847 A CN109741847 A CN 109741847A CN 201811580350 A CN201811580350 A CN 201811580350A CN 109741847 A CN109741847 A CN 109741847A
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- stainless steel
- pump
- quick coupling
- steel tubing
- water
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- 238000011001 backwashing Methods 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 158
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 146
- 239000010935 stainless steel Substances 0.000 claims abstract description 146
- 230000008878 coupling Effects 0.000 claims abstract description 69
- 238000010168 coupling process Methods 0.000 claims abstract description 69
- 238000005859 coupling reaction Methods 0.000 claims abstract description 69
- 238000010926 purge Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 10
- 238000005086 pumping Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 8
- 230000005855 radiation Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
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- Pipeline Systems (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to technical field of nuclear power, it is specific open a kind of suitable for Nuclear power plant main pipeline gauge pipe hot spot back purge system, the device includes handcraft, thread hose, controller, centrifugal pump and motor, pressure transmitter, pump water inlet stainless steel tubing, pump out water stainless steel tubing, pump circulation stainless steel tubing, stainless steel tubing, stainless steel instrument pipeline, stainless steel gauge pipe hand stop valve, pump circulation stainless steel tubing hand stop valve, pump out mouth of a river quick coupling, the outspoken quick coupling of pump water inlet, the water intaking flexible pipe, delivery hose, non-return valve, threeway, delivery hose fast joint, instrument quick coupling, drain valve, discharging hose, low liquid level switch, water tank hand stop valve, tank outlet quick coupling and water tank.The device can be achieved at the same time the backwash to 4 gauge pipes, can efficiently complete backwash work.
Description
Technical field
The invention belongs to technical field of nuclear power, and in particular to one kind is suitable for Nuclear power plant main pipeline gauge pipe hot spot and backwashes
Device.
Background technique
Using the one loop of nuclear power station system of 4 loop designs, with the growth of unit runing time, in primary Ioops main pipeline
Instrument sampling line pipe bent position deposited a large amount of radiation hot particle, cause main pipeline ambient enviroment dosage to rise year by year, substantially
Degree increases power station personnel's collective dose.
To reduce main pipeline Environmental dose rate, need to carry out main pipeline instrument sampling line radiant heat during each overhaul
Point backwash work, to reduce reactor building main pipeline regional environment dosage.
Summary of the invention
In view of the above technical problems, the present invention provides a kind of Nuclear power plant main pipeline gauge pipe hot spot back purge system, the dress
The backwash that can be achieved at the same time to 4 gauge pipes is set, backwash work can be efficiently completed.
Realize the technical solution of the object of the invention: a kind of Nuclear power plant main pipeline gauge pipe hot spot back purge system, the device
Including controller, centrifugal pump and motor, pressure transmitter, pump water inlet stainless steel tubing, pump out water stainless steel tubing, circulation it is stainless
Steel pipeline, stainless steel tubing, stainless steel instrument pipeline, stainless steel gauge pipe hand stop valve, pump circulation stainless steel tubing are manual
Shut-off valve pumps out mouth of a river quick coupling, the outspoken quick coupling of pump water inlet, the signal output end and centrifugal pump of controller and the letter of motor
The water inlet of the connection of number input terminal, centrifugal pump and motor is connected to the side of pump water inlet stainless steel tubing, pump water inlet stainless steel tube
The other side of line is connected to the side of the outspoken quick coupling of pump water inlet, the water outlet of centrifugal pump and motor and pumps out water stainless steel tubing
Side connection；Water stainless steel tubing is pumped out equipped with pressure transmitter, the signal output end of pressure transmitter passes through control electricity
The connection of the signal monitoring end of cable and controller；Pump out the other side of water stainless steel tubing and the side of pump circulation stainless steel tubing,
The side of stainless steel tubing is connected to；The other side of pump circulation stainless steel tubing and the one of pump circulation stainless steel tubing hand stop valve
Side connection, the other side of pump circulation stainless steel tubing hand stop valve is connected to the other side of pump water inlet stainless steel tubing；It is stainless
The other side of steel pipeline is connected to the side of stainless steel instrument pipeline, the other side of stainless steel instrument pipeline and stainless steel gauge pipe
The side of hand stop valve is connected to, and the other side of stainless steel gauge pipe hand stop valve connects with the side for pumping out mouth of a river quick coupling
It is logical.
The stainless steel instrument pipeline, stainless steel gauge pipe hand stop valve, to pump out mouth of a river quick coupling be four,
Stainless steel tubing is connected to the side of four stainless steel instrument pipelines respectively, the other side of every stainless steel instrument pipeline respectively with
The side connection of one stainless steel gauge pipe hand stop valve, the other side of each stainless steel gauge pipe hand stop valve respectively with
One pumps out the side connection of mouth of a river quick coupling.
The signal output end of the controller is with the signal input part of centrifugal pump and motor by power cable through threading
Hose connection.
Threading hose, controller, centrifugal pump and the motor, pump water inlet stainless steel tubing, pumps out water at pressure transmitter
Stainless steel tubing, circulation stainless steel tubing, stainless steel tubing, stainless steel instrument pipeline, stainless steel gauge pipe hand stop valve, pump
Circulation stainless steel tubing hand stop valve, pump out mouth of a river quick coupling, the outspoken quick coupling of pump water inlet is respectively positioned in handcraft.
The back purge system still further comprise the water intaking flexible pipe, delivery hose, non-return valve, delivery hose fast joint,
Instrument quick coupling, drain valve, discharging hose, low liquid level switch, water tank pump out the other side of mouth of a river quick coupling and go out
The side of water hose is connected to, and the other side of delivery hose is connected to the side of non-return valve, the other side of non-return valve and delivery hose
The side connection of fast joint, drain valve, the other side of delivery hose fast joint are connected to the side of instrument quick coupling, drain valve
The other side be connected to the side of discharging hose；The other side of the outspoken quick coupling of pump water inlet is connected to the side of the water intaking flexible pipe, is taken
The other side of water hose is connected to the water outlet of water tank, and low liquid level switch is equipped in water tank.
The delivery hose, non-return valve, delivery hose fast joint, instrument quick coupling, drain valve, discharging hose are
Four.
Each of described other side for pumping out mouth of a river quick coupling is connected to the side of a delivery hose respectively, is each gone out
The other side of water hose is connected to the side of a non-return valve respectively, the other side of each non-return valve respectively with a delivery hose
The side connection of the side of fast joint, drain valve, the other side of each delivery hose fast joint are fast with an instrument respectively
The side of quick coupling is connected to, and the other side of each drain valve is connected to the side of a discharging hose respectively.
The other side of each non-return valve by a threeway respectively with the side of a delivery hose fast joint, one
The side of a drain valve is connected to.
Water tank hand stop valve and water tank quick coupling are equipped between the water outlet and the water intaking flexible pipe of the water tank.
The water outlet of the water tank is connected to the side of water tank hand stop valve, the other side of water tank hand stop valve with
The side of water tank quick coupling is connected to, and the other side of water tank quick coupling is connected to the other side of the water intaking flexible pipe.
The beneficial technical effect of the present invention lies in: a kind of Nuclear power plant main pipeline gauge pipe hot spot recoil provided by the present invention
Cleaning device can be realized to 4 gauge pipes while rinse, and can efficiently complete backwash work；The end of every delivery hose is set
It is equipped with non-return valve, prevents the radiating medium in process system from flowing backwards；It pumps out and is provided with a pressure change in water stainless steel tubing
Device is sent, pump protection is jumped in pressure transmitter limit value interlocking, prevents pipeline superpressure or low discharge from cavitating.
Detailed description of the invention
Fig. 1 is a kind of Nuclear power plant main pipeline gauge pipe hot spot back purge system internal structure signal provided by the present invention
Figure；
Fig. 2 is controller structure diagram provided by the present invention；
Fig. 3 is main pipeline gauge pipe hot spot back purge system external equipment structural schematic diagram provided by the present invention.
In figure: 1- handcraft；2- threads hose；3- controller；4- centrifugal pump and motor；5- pressure transmitter；6- pump
Water inlet stainless steel tubing；7- pumps out water stainless steel tubing；8- pump circulation stainless steel tubing；9- stainless steel tube；10- stainless steel instrument
Pipeline；11- stainless steel gauge pipe hand stop valve；12- pump circulation stainless steel tubing hand stop valve；It is quick that 13- pumps out the mouth of a river
Connector；The outspoken quick coupling of 14- pump water inlet；17- the water intaking flexible pipe；18- delivery hose；19- non-return valve；20- threeway；21- water outlet is soft
Pipe quick joint；22- instrument quick coupling；23- drain valve；24- discharging hose；25- low liquid level switch；26- isolating valve；
27- water tank quick coupling；28- water tank.
Specific embodiment
It is with reference to the accompanying drawings and examples a kind of Nuclear power plant main pipeline gauge pipe hot spot backwash provided by the present invention
Device is further described.
As shown in Figure 1, 2, 3, a kind of Nuclear power plant main pipeline gauge pipe hot spot back purge system provided by the present invention, the dress
It sets including handcraft 1, threading hose 2, controller 3, centrifugal pump and motor 4, pressure transmitter 5, pump water inlet stainless steel tubing
6, water stainless steel tubing 7, pump circulation stainless steel tubing 8, stainless steel tubing 9, stainless steel instrument pipeline 10, stainless steel instrument are pumped out
Pipe hand stop valve 11, pump circulation stainless steel tubing hand stop valve 12 pump out mouth of a river quick coupling 13, the outspoken quick access of pump water inlet
First 14, the water intaking flexible pipe 17, delivery hose 18, non-return valve 19, threeway 20, delivery hose fast joint 21, instrument quick coupling 22, row
Put valve 23, discharging hose 24, low liquid level switch 25, water tank hand stop valve 26, tank outlet quick coupling 27 and water tank
28。
As shown in Figure 1,1 bottom of handcraft is set there are four mute wheel, carries and transport for the device.The device
Threading hose 2, controller 3, centrifugal pump and motor 4, pump water inlet stainless steel tubing 6, pump out water stainless steel tube at pressure transmitter 5
Line 7, pump circulation stainless steel tubing 8, stainless steel tubing 9, stainless steel instrument pipeline 10, stainless steel gauge pipe hand stop valve 11,
Pump circulation stainless steel tubing hand stop valve 12, pump out mouth of a river quick coupling 13, the outspoken quick coupling 14 of pump water inlet is all located at and pulls
On trolley 1.Threading hose 2 is the device power cable channel.Controller 3 is aobvious for controlling pump start and stop and pump operation state
Show, real-time outlet pressure and high water tank alert detecting.
As shown in Figure 1, 2, 3, the signal input part of the signal output end of controller 3 and centrifugal pump and motor 4 passes through power
Cable is connected through threading hose 2, and the signal monitoring end of controller 3 is also logical with pressure transmitter 5, low liquid level switch 25 respectively
Cross control cable connection.Controller 3 is equipped with start-stop button 15 and touch screen 16, and start-stop button 15 is opened for controlling pump start and stop
Stop button 15 and is located at 3 left side of controller；Touch screen 16 is located at for controlling pump start and stop and pump operation status display, touch screen 16
3 front of controller.Controller 3 is for controlling pump start and stop and pump operation status display, real-time outlet pressure and high water tank
Alert detecting.Centrifugal pump and motor 4 are used for pumped (conveying) medium, pump discharge pressure 1MPa；The water inlet and pump of centrifugal pump and motor 4
The water outlet of the side connection for stainless steel tubing 6 of intaking, centrifugal pump and motor 4 is connected to the side for pumping out water stainless steel tubing 7.
Water stainless steel tubing 7 is pumped out equipped with pressure transmitter 5, pressure transmitter 5 is for the pump discharge pressure of centrifugal pump and motor 4 prison
Survey and designed superpressure and low pressure cavitation erosion termination of pumping protection.The signal input part of pressure transmitter 5 and pump out water stainless steel tubing 7
Connection, the signal output end of pressure transmitter 5 are connect by controlling cable with the signal monitoring end of controller 3.Pump water inlet is stainless
Steel pipeline 6 is pump water inlet pipeline.The side of pump water inlet stainless steel tubing 6 is connected to the water inlet of centrifugal pump and motor 4, pump water inlet
The other side of stainless steel tubing 6 is connected to the side of the outspoken quick coupling 14 of pump water inlet；The outspoken quick coupling 14 of pump water inlet is for quick
Connect the water intaking flexible pipe.Pumping out water stainless steel tubing 7 is water pump outlet pipe line, pump out the other side of water stainless steel tubing 7 respectively with pump
Recycle the side of stainless steel tubing 8, the side connection of stainless steel tubing 9.The other side of pump circulation stainless steel tubing 8 and pump circulation
The side of stainless steel tubing hand stop valve 12 is connected to, the other side of pump circulation stainless steel tubing hand stop valve 12 and pump water inlet
The other side of stainless steel tubing 6 is connected to；Pump circulation stainless steel tubing 8 is vented for pump chamber, pipeloop, pump circulation stainless steel tube
Line hand stop valve 12 is used for pump circulation pipeline on-off.Water outlet is divided into four tunnels by stainless steel tubing 9, stainless steel tubing 9 it is another
Side is connected to the side of four stainless steel instrument pipelines 10 respectively, and every stainless steel instrument pipeline 10 is for water outlet to be divided into
Individually all the way, water outlet is divided into four tunnels by four stainless steel instrument pipelines 10.The other side of every stainless steel instrument pipeline 10 point
Be not connected to the side of a stainless steel gauge pipe hand stop valve 11, each stainless steel gauge pipe hand stop valve 11 it is another
The side that side pumps out mouth of a river quick coupling 13 with one respectively is connected to；Stainless steel gauge pipe hand stop valve 11 is used for pump discharge pipe
Line on-off；Pump out mouth of a river quick coupling 13 for quickly connection delivery hose.
As shown in figure 3, the side of the water intaking flexible pipe 17 is connected to the other side of the outspoken quick coupling 14 of pump water inlet, the water intaking flexible pipe
17 other side is connected to tank outlet quick coupling 27；The water intaking flexible pipe 17 is used to fetch water from water tank 28.Every delivery hose 18
The side other side that pumps out mouth of a river quick coupling 13 with one respectively be connected to, the other side of every delivery hose 18 is respectively with one
The side of a non-return valve 19 is connected to；Delivery hose 18 is conveyed for medium.The other side of each non-return valve 19 respectively with one three
Logical 20 side connection, non-return valve 19 are used to prevent the medium counter flow of conveying.Threeway 20 is for drawing branch, and each threeway 20 is also
It is connected to respectively with the side of the side of a delivery hose fast joint 21, a drain valve 23, the other side of each drain valve 23
Also it is connected to respectively with the side of a discharging hose 24；Drain valve 23 is used for discharging hose on-off, release, exhaust, draining, discharge
Hose 24 is used for release, exhaust, draining.For delivery hose fast joint 21 for quickly connecting instrument quick coupling, each water outlet is soft
The other side of pipe quick joint 21 is connected to the side of an instrument quick coupling 22 respectively；Instrument quick coupling 22 is for quickly connecting
Connect instrument.Low liquid level switch 25 is protected for high water tank alert detecting and termination of pumping, and low liquid level switch 25 is placed in water
In case 28, it is connect by controlling cable with the signal monitoring end of controller 3 outside low liquid level switch 25.Water tank manual shutoff
Valve 26 is used for 28 water outlet on-off of water tank, and the side of water tank hand stop valve 26 is connected to the water outlet of water tank 28, and water tank is manual
The other side of shut-off valve 26 is connected to the side of water tank quick coupling 27, the other side of water tank quick coupling 27 and the water intaking flexible pipe 17
The other side connection；Water tank quick coupling 27 is used for storage medium for quickly connecting the water intaking flexible pipe, water tank 28, and water tank is removable
It carries.
As shown in Figure 1, 2, 3, the work of a kind of Nuclear power plant main pipeline gauge pipe hot spot back purge system provided by the present invention
It is as follows to make principle: delivery hose fast joint 21 is connected to instrument quick coupling 22, closes pump circulation stainless steel tubing and cuts manually
Only valve 12 and drain valve 23 open stainless steel gauge pipe hand stop valve 11, non-return valve 19 and water tank hand stop valve 26.By control
Start-stop button 15 on device 3 processed starts controller 3, and controller 3 controls centrifugal pump and motor 4 is started to work, centrifugal pump and motor
4 extract the medium in water tanks 28, the medium in water tank 28 successively pass through water tank hand stop valve 26, water tank quick coupling 27,
The water intaking flexible pipe 17, pump water inlet outspoken quick coupling 14, pump out water stainless steel tubing 7, stainless steel tubing at pump water inlet stainless steel tubing 6
9 and four road stainless steel instrument pipelines 10, stainless steel gauge pipe hand stop valve 11, pump out mouth of a river quick coupling 13, non-return valve
19, after threeway 20, delivery hose fast joint 21, instrument quick coupling 22, four Nuclear power plant main pipeline gauge pipes are injected separately into, it will
The a large amount of radiation hot particle of four main pipeline instrument sampling line pipe bent positions deposition is broken up, to reduce the dose of radiation of environment.
Controller 3 for control centrifugal pump and 4 start and stop of motor and centrifugal pump and 4 operating status of motor show, real-time monitoring water tank 28
Outlet pressure and the monitoring of 28 liquid level warning of water tank.The pump discharge pressure of 5 real-time monitoring centrifugal pump of pressure transmitter and motor 4 prison
It surveys, when the pump discharge pressure of centrifugal pump and motor 4 is excessive, opens pump circulation stainless steel tubing hand stop valve 12, make part
Medium flow field is by pumping out water stainless steel tubing 7, pump circulation stainless steel tubing 8, in 8 reflow tank 28 of pump circulation stainless steel tubing.
After flushing work, by the start-stop button 15 on controller 3, closes controller 3 and beaten to close centrifugal pump and motor 4
Open drain valve 23, pump water inlet stainless steel tubing 6, pump out water stainless steel tubing 7, pump circulation stainless steel tubing 8, stainless steel tubing 9,
Stainless steel instrument pipeline 10, pump out mouth of a river quick coupling 13, the outspoken quick coupling 14 of pump water inlet, the water intaking flexible pipe 17, delivery hose 18,
Residual medium discharge in delivery hose fast joint 21, instrument quick coupling 22；It is quick to disconnect delivery hose fast joint 21, instrument
Connector 22 closes stainless steel gauge pipe hand stop valve 11, non-return valve 19, water tank hand stop valve 26, pump circulation stainless steel tube
Line hand stop valve 12 and drain valve 23.
The present invention is explained in detail above in conjunction with drawings and examples, but the present invention is not limited to above-mentioned implementations
Example, within the knowledge of a person skilled in the art, can also make without departing from the purpose of the present invention
Various change out.The content being not described in detail in the present invention can use the prior art.
Claims (10)
1. a kind of Nuclear power plant main pipeline gauge pipe hot spot back purge system, it is characterised in that: the device include controller (3), from
Heart pump and motor (4), pressure transmitter (5), pump water inlet stainless steel tubing (6), to pump out water stainless steel tubing (7), circulation stainless
Steel pipeline (8), stainless steel tubing (9), stainless steel instrument pipeline (10), stainless steel gauge pipe hand stop valve (11), pump circulation
Stainless steel tubing hand stop valve (12) pumps out mouth of a river quick coupling (13), the outspoken quick coupling of pump water inlet (14), controller (3)
Signal output end connect with the signal input part of centrifugal pump and motor (4), the water inlet and pump water inlet of centrifugal pump and motor (4)
The side of stainless steel tubing (6) is connected to, the other side of pump water inlet stainless steel tubing (6) and the one of the outspoken quick coupling of pump water inlet (14)
The water outlet of side connection, centrifugal pump and motor (4) is connected to the side for pumping out water stainless steel tubing (7)；Pump out water stainless steel tube
Line (7) is equipped with pressure transmitter (5), the letter that the signal output end of pressure transmitter (5) passes through control cable and controller (3)
The connection of number monitoring side；Pump out the other side of water stainless steel tubing (7) and the side of pump circulation stainless steel tubing (8), stainless steel tube
The side of line (9) is connected to；The other side of pump circulation stainless steel tubing (8) and pump circulation stainless steel tubing hand stop valve (12)
Side connection, the other side of pump circulation stainless steel tubing hand stop valve (12) and the other side of pump water inlet stainless steel tubing (6)
Connection；The other side of stainless steel tubing (9) is connected to the side of stainless steel instrument pipeline (10), stainless steel instrument pipeline (10)
The other side is connected to the side of stainless steel gauge pipe hand stop valve (11), stainless steel gauge pipe hand stop valve (11) it is another
Side is connected to the side for pumping out mouth of a river quick coupling (13).
2. a kind of Nuclear power plant main pipeline gauge pipe hot spot back purge system according to claim 1, it is characterised in that: described
Stainless steel instrument pipeline (10), stainless steel gauge pipe hand stop valve (11), to pump out mouth of a river quick coupling (13) be four,
Stainless steel tubing (9) is connected to the side of four stainless steel instrument pipelines (10) respectively, every stainless steel instrument pipeline (10)
The other side is connected to the side of a stainless steel gauge pipe hand stop valve (11) respectively, each stainless steel gauge pipe manual shutoff
The side that the other side of valve (11) pumps out mouth of a river quick coupling (13) with one respectively is connected to.
3. a kind of Nuclear power plant main pipeline gauge pipe hot spot back purge system according to claim 2, it is characterised in that: described
Controller (3) signal output end and centrifugal pump and motor (4) signal input part by power cable through threading hose (2)
Connection.
4. a kind of Nuclear power plant main pipeline gauge pipe hot spot back purge system according to claim 3, it is characterised in that: described
Threading hose (2), controller (3), centrifugal pump and motor (4), pressure transmitter (5), pump water inlet stainless steel tubing (6), pump
It is discharged stainless steel tubing (7), circulation stainless steel tubing (8), stainless steel tubing (9), stainless steel instrument pipeline (10), stainless steel instrument
Table pipe hand stop valve (11), pumps out mouth of a river quick coupling (13), pump water inlet at pump circulation stainless steel tubing hand stop valve (12)
Outspoken quick coupling (14) is respectively positioned on handcraft (1).
5. a kind of Nuclear power plant main pipeline gauge pipe hot spot back purge system according to claim 4, it is characterised in that: described
Back purge system still further comprise the water intaking flexible pipe (17), delivery hose (18), non-return valve (19), delivery hose fast joint
(21), instrument quick coupling (22), drain valve (23), discharging hose (24), low liquid level switch (25), water tank (28), pump
The other side of water outlet quick coupling (13) is connected to the side of delivery hose (18), the other side of delivery hose (18) and check
The side of valve (19) is connected to, and the other side of non-return valve (19) is connected to the side of delivery hose fast joint (21), drain valve (23),
The other side of delivery hose fast joint (21) is connected to the side of instrument quick coupling (22), the other side of drain valve (23) and row
Soften the side connection of pipe (24)；The other side of the outspoken quick coupling of pump water inlet (14) is connected to the side of the water intaking flexible pipe (17), is taken
The other side of water hose (17) is connected to the water outlet of water tank (28), is equipped with low liquid level switch (25) in water tank (28).
6. a kind of Nuclear power plant main pipeline gauge pipe hot spot back purge system according to claim 4, it is characterised in that: described
Delivery hose (18), non-return valve (19), delivery hose fast joint (21), instrument quick coupling (22), drain valve (23), discharge
Hose (24) is four.
7. a kind of Nuclear power plant main pipeline gauge pipe hot spot back purge system according to claim 6, it is characterised in that: described
Each of pump out the other side of mouth of a river quick coupling (13) and be connected to respectively with the side of a delivery hose (18), each water outlet is soft
Pipe (18) the other side be connected to respectively with the side of a non-return valve (19), the other side of each non-return valve (19) respectively with one
The side connection of the side of delivery hose fast joint (21), drain valve (23), each delivery hose fast joint (21) it is another
Side is connected to the side of an instrument quick coupling (22) respectively, and the other side of each drain valve (23) is discharged with one respectively
The side of hose (24) is connected to.
8. a kind of Nuclear power plant main pipeline gauge pipe hot spot back purge system according to claim 7, it is characterised in that: described
Each non-return valve (19) the other side by a threeway (20) respectively with the side of a delivery hose fast joint (21), one
The side of a drain valve (23) is connected to.
9. a kind of Nuclear power plant main pipeline gauge pipe hot spot back purge system according to claim 8, it is characterised in that: described
Water tank (28) water outlet and the water intaking flexible pipe (17) between be equipped with water tank hand stop valve (26) and water tank quick coupling (27).
10. a kind of Nuclear power plant main pipeline gauge pipe hot spot back purge system according to claim 9, it is characterised in that: institute
The water outlet for the water tank (28) stated is connected to the side of water tank hand stop valve (26), the other side of water tank hand stop valve (26)
It is connected to the side of water tank quick coupling (27), the other side of water tank quick coupling (27) and the other side of the water intaking flexible pipe (17) connect
It is logical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811580350.4A CN109741847A (en) | 2018-12-24 | 2018-12-24 | A hot spot backwashing device for instrumentation pipes of main pipelines of nuclear power plants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811580350.4A CN109741847A (en) | 2018-12-24 | 2018-12-24 | A hot spot backwashing device for instrumentation pipes of main pipelines of nuclear power plants |
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| Publication Number | Publication Date |
|---|---|
| CN109741847A true CN109741847A (en) | 2019-05-10 |
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ID=66359615
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811580350.4A Pending CN109741847A (en) | 2018-12-24 | 2018-12-24 | A hot spot backwashing device for instrumentation pipes of main pipelines of nuclear power plants |
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| CN (1) | CN109741847A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118969341A (en) * | 2024-07-23 | 2024-11-15 | 阳江核电有限公司 | Methods for reducing effluent emissions from conventional islands of nuclear power plants |
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