CN105927529A - Nuclear grade pump inlet filter screen monitoring device - Google Patents
Nuclear grade pump inlet filter screen monitoring device Download PDFInfo
- Publication number
- CN105927529A CN105927529A CN201610414400.6A CN201610414400A CN105927529A CN 105927529 A CN105927529 A CN 105927529A CN 201610414400 A CN201610414400 A CN 201610414400A CN 105927529 A CN105927529 A CN 105927529A
- Authority
- CN
- China
- Prior art keywords
- filter screen
- pump intake
- core level
- intake filter
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/20—Filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2207/00—External parameters
- F04B2207/70—Warnings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a nuclear grade pump inlet filter screen monitoring device. The nuclear grade pump inlet filter screen monitoring device comprises a power source, a relay, an alarm and a pressure control switch. The pressure control switch can conduct on-off control according to a pressure signal and controls the power source to be connected with the alarm through the relay. According to the nuclear grade pump inlet filter screen monitoring device, compared with the prior art, the operation situation of a filter screen at a nuclear grade pump inlet is monitored and recorded in real time through intelligent control, the human caused failure risk of monitoring of the filter screen at the nuclear grade pump inlet is avoided, and the damage risk of nuclear grade important equipment and the disturbance risk of a nuclear power unit are remarkably reduced.
Description
Technical field
The invention belongs to nuclear power field, it is more particularly related to a kind of core level pump intake filter screen monitoring
Device.
Background technology
Compacted clay liners, in the installation and debugging stage, needs to install interim drainage screen in the porch of core level pump,
To prevent foreign body in fluid media (medium) from entering the pump housing of nuclear power generating sets center level pump, affect the safety of core level pump with
Properly functioning.When nuclear power generating sets installation and debugging complete and when entering normal operating phase, fluid media (medium) meets fortune
Row requirement, interim drainage screen can be removed.
Owing to core level pump intake interim drainage screen density is careful, the water soluble paper in fluid, welding slag, cotton foreign body
Dammed so that the circulation area of fluid reduces Deng impurity by drainage screen, cause core level pump inlet pressure to reduce and draw
Send out cavitation and damage pump parts.Serve as filter net jam serious, and in the presence of having big metallic foreign body, if
Can not termination of pumping in time, drainage screen may damage breakage, foreign body enter the pump housing inside even run the interior of pipeline
Portion, causes extensive damage to pump, pipeline and other equipment.Therefore when core level pump inlet pressure reduces should and
Time termination of pumping, pull down interim drainage screen, drainage screen be rinsed or change.
Because the interim drainage screen of pump intake belongs to makeshift device, it has been disclosed that nuclear power station does not design special guarantor
Protecting control logic and monitoring device, the installation and debugging stage monitors the pressure of pump intake at the scene mainly by monitoring personnel
Power meter reading, when force value less than required value time, monitoring personnel notify in time master control room personnel carry out termination of pumping or
Cut pump operated.The interim drainage screen situation of pump intake is monitored by people, there is the biggest people because of failure risk,
Cannot effectively ensure that the safety of core level visual plant can use or even the stable operation of unit.
In view of this, it is necessary to a kind of core level pump intake filter screen monitoring device that can solve the problem that the problems referred to above is provided.
Summary of the invention
It is an object of the invention to: overcome the deficiencies in the prior art, it is provided that one can realize intelligentized control method
Core level pump intake filter screen monitoring device, monitor in real time with the drainage screen ruuning situation to core level pump intake
And record, it is to avoid the people of core level pump intake filter screen monitoring, because of failure risk, significantly reduces core level visual plant
Damage risk and the disturbance risk of nuclear power generating sets.
To achieve these goals, the present invention provides a kind of core level pump intake filter screen monitoring device, and it includes electricity
Source, relay, alarm and pressure control switch, pressure control switch can be opened according to pressure signal
Closing and control, pressure control switch is connected with alarm by power source for relay control.
Preferably, described pressure control switch is pressure switch.
Preferably, the pressure input of described pressure switch comes from the outlet side of core level pump intake filter screen.
Preferably, when the pressure of described pressure switch inputs and is not more than the threshold value set, described pressure switch
Connected with alarm by power source for relay control.
Preferably, described core level pump intake filter screen monitoring device also includes pressure transmitter, pressure transmitter
Pressure input comes from the outlet side of core level pump intake filter screen.
Preferably, described core level pump intake filter screen monitoring device also includes monitor, and monitor is by pressure inverting
The signal of device output is converted to force value, and carries out real time record and display.
Preferably, described pressure transmitter and relay are parallel between the both positive and negative polarity of power supply, pressure switch string
Being associated in the control loop of relay, alarm is connected in the controlled loop of relay.
Preferably, described pressure control switch is differential pressure switch.
Preferably, two pressure inputs of described differential pressure switch are respectively from the both sides of core level pump intake filter screen.
Preferably, when the difference of two pressure inputs of described differential pressure switch is more than the threshold value set, described difference
Compress switch and connected with alarm by power source for relay control.
Preferably, described core level pump intake filter screen monitoring device also includes differential pressure transmitter, differential pressure transmitter
Two pressure inputs are respectively from the both sides of core level pump intake filter screen.
Preferably, described core level pump intake filter screen monitoring device also includes monitor, and monitor is by differential pressure transporting
The signal of device output is converted to differential pressure value, and carries out real time record and display.
Preferably, described differential pressure transmitter and relay are parallel between the both positive and negative polarity of power supply, differential pressure switch string
Being associated in the control loop of relay, alarm is connected in the controlled loop of relay.
Compared with prior art, core level pump intake filter screen monitoring device of the present invention has following technical effect that logical
Cross intelligentized control to monitor, alarm signal can be produced when pump intake filter screen occurs blocking, it is simple to master control
Room test operation personnel take the timely manual termination of pumping of effective prevention measure or switchable pump, it is to avoid core level pump intake
The people of filter screen monitoring because of failure risk, significantly reduces the damage risk of core level visual plant and nuclear power generating sets
Disturbance risk.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and detailed description of the invention, to core level pump intake filter screen monitoring device of the present invention and have
Benefit technique effect is described in detail.
Fig. 1 is the structural representation of first embodiment of core level pump intake filter screen monitoring device of the present invention.
Fig. 2 is the structural representation of second embodiment of core level pump intake filter screen monitoring device of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and technique effect become apparent from understanding, below in conjunction with accompanying drawing
And detailed description of the invention, the present invention is further elaborated.It should be appreciated that in this specification
The detailed description of the invention described is only used to explain the present invention, is not intended to limit the present invention.
Being provided with interim drainage screen at the core level pump intake of nuclear power station, interim drainage screen is used for preventing in fluid media (medium)
Foreign body enter the pump housing of core level pump when nuclear power generating sets installation and debugging, affect the safety of core level pump and normal fortune
OK.
Core level pump intake filter screen monitoring device of the present invention includes that power supply, relay, alarm and Stress control are opened
Close；Pressure control switch can carry out on-off control according to pressure signal, and by power source for relay control with
Alarm connects.
Embodiment 1
Refer to shown in Fig. 1, in the present embodiment, core level pump intake filter screen monitoring device include power supply 10,
Relay 11, alarm 12, pressure switch 13, pressure transmitter 14 and recorder analyser 15.
Power supply 10 is 24V DC source, for relay 11, alarm 12 and pressure transmitter 14
Power supply.
The pressure input of pressure switch 13 is arranged at the outlet side of core level pump intake filter screen, pressure switch 13
Pressure size according to core level pump intake filter screen outlet side carries out on-off control: when the pressure of filter screen outlet side is little
When the threshold value that pressure switch sets, pressure switch 13 closes；When the pressure of filter screen outlet side is more than or equal to
During the threshold value that pressure switch 13 sets, pressure switch 13 disconnects.
Relay 11 is used for controlling alarm signal, and relay 11 includes controlling loop and controlled loop, when continuing
During the control circuit communication of electrical equipment 11, its controlled loop also connects, when the control loop of relay 11 disconnects
Time, its controlled loop also disconnects.
The pressure input of pressure transmitter 14 is arranged at the outlet side of core level pump intake filter screen, pressure transmitter
14 the pressure variations of core level pump intake filter screen outlet side is converted in proportion the standard output signal of telecommunication (4～
20mA/0～5V), with the change of on-line real time monitoring core level pump intake filter screen outlet side pressure.
Recorder analyser 15 is connected with pressure transmitter 14, and recorder analyser 15 is by pressure transmitter 14
The standard electric signal of output is converted into force value, and force value carries out real-time record, analyzes and show.
Pressure transmitter 14 and relay 11 are parallel between the both positive and negative polarity of power supply 10, and pressure switch 13 is gone here and there
Being associated in the control loop of relay 11, alarm 12 is connected in the controlled loop of relay 11.
Pressure switch 13 controls power supply 10 by relay 11 and connects with alarm 12, concrete control flow
As follows.
When the pressure of core level pump intake filter screen outlet side is not less than the threshold value of pressure switch 13, pressure switch 13
Disconnecting, the control loop of relay 11 disconnects, and relay 11 does not works, and its controlled loop disconnects, and reports to the police
Device 12 does not works.
When, after the pressure drop of the core level pump intake filter screen outlet side threshold value low to less than pressure switch 13, pressure is opened
Closing 13 Guan Bis, the control loop of relay 11 switches on power 10, and relay 11 works, and its controlled loop is led
Logical, alarm 12 turns on, and alarm 12 produces the alarm signal of filter net jam, master control room test operation people
Member takes intervening measure, timely manual termination of pumping or switchable pump.If reporting to the police after triggering, nuclear power generating sets are in special
Running status, related personnel wouldn't termination of pumping, switchable pump or filter screen is checked, still can pass through record
The pressure of core level pump intake filter screen outlet side is monitored by analyser 15 in real time, and in the pressure of filter screen outlet side
Power takes measures before being reduced to ultimate value, timely manual termination of pumping or switchable pump.
Embodiment 2
Refer to shown in Fig. 2, in the present embodiment, core level pump intake filter screen monitoring device include power supply 10,
Relay 11, alarm 12, differential pressure switch 16, differential pressure transmitter 17 and recorder analyser 15.
Power supply 10 is 24V DC source, for relay 11, alarm 12 and differential pressure transmitter 17
Power supply.
Two pressure input of differential pressure switch 16 are respectively arranged at entrance side and the outlet of core level pump intake filter screen
Side, differential pressure switch 16 carries out on-off control according to the pressure differential of core level pump intake filter screen entrance side and outlet side:
When the threshold value that the difference of filter screen entrance side and the pressure of outlet side sets more than differential pressure switch 16, differential pressure switch 16
Guan Bi；When the threshold value that the difference of filter screen entrance side and the pressure of outlet side sets less than or equal to differential pressure switch 16,
Differential pressure switch 16 disconnects.
Relay 11 is used for controlling alarm signal, and relay 11 includes controlling loop and controlled loop, when continuing
During the control circuit communication of electrical equipment 11, its controlled loop also connects, when the control loop of relay 11 disconnects
Time, its controlled loop also disconnects.
Two pressure input of differential pressure transmitter 17 are respectively arranged at the entrance side of core level pump intake filter screen and go out
Mouth side, differential pressure transmitter 17 is by the difference of core level pump intake filter screen entrance side and the pressure variations of outlet side in proportion
Be converted to the standard output signal of telecommunication (4～20mA/0～5V), enter with on-line real time monitoring core level pump intake filter screen
Mouth side and the change of outlet side pressure differential.
Recorder analyser 15 is connected with differential pressure transmitter 17, and recorder analyser 15 is by differential pressure transmitter 17
The standard electric signal of output is converted into force value, and force value carries out real-time record, analyzes and show.
Differential pressure transmitter 17 and relay 11 are parallel between the both positive and negative polarity of power supply 10, and differential pressure switch 16 is gone here and there
Being associated in the control loop of relay 11, alarm 12 is connected in the controlled loop of relay 11.
Differential pressure switch 16 controls power supply 10 by relay 11 and connects with alarm 12, concrete control flow
As follows.
When the pressure differential of core level pump intake filter screen entrance side and outlet side is less than or equal to the threshold value of differential pressure switch 16
Time, differential pressure switch 16 disconnects, and the control loop of relay 11 disconnects, and relay 11 does not works, and it is controlled
Loop disconnects, and alarm 12 does not works.
When the pressure differential of core level pump intake filter screen entrance side and outlet side is increased above the threshold value of differential pressure switch 16
After, differential pressure switch 16 closes, and the control loop of relay 11 switches on power 10, and relay 11 works, its
Controlled loop turns on, and alarm 12 turns on, and alarm 12 produces the alarm signal of filter net jam, master control room
Test operation personnel take intervening measure, timely manual termination of pumping or switchable pump.If reporting to the police after triggering, nuclear power machine
Group is in special running status, related personnel wouldn't termination of pumping, switchable pump or filter screen is checked, still may be used
The pressure differential of core level pump intake filter screen entrance side and outlet side is supervised in real time by recorder analyser 15
Survey, and took measures, the most manually before the pressure differential of filter screen entrance side and outlet side increases to ultimate value
Termination of pumping or switchable pump.
In conjunction with above detailed description of the present invention it can be seen that relative to prior art, the core level of the present invention
The Advantageous Effects of pump intake filter screen monitoring device includes but not limited to:
First, by arranging logic alarm circuit, when core level pump intake filter net jam reaches alarm threshold value,
Alarming logic triggers, and produces blocking and reports to the police, and related personnel carries out termination of pumping or switchable pump operation, it is to avoid core level
The people of pump intake filter screen monitoring is because of failure risk.
Second, by arranging online operational monitoring loop, the ruuning situation of core level pump intake filter screen is carried out reality
Time monitoring, in real time display filter screen outlet side force value or the situation of change of filter screen pressure at both sides difference, work as filter screen
Can be found timely after blocking or when blocking reaches the limit values, decrease unexpected termination of pumping and unit operation is produced
Raw disturbance, and protect the safety of corresponding core level visual plant.
According to above-mentioned principle, the present invention can also carry out suitable change and amendment to above-mentioned embodiment.Cause
This, the invention is not limited in detailed description of the invention disclosed and described above, some amendments to the present invention
With in the scope of the claims that change should also be as falling into the present invention.Although additionally, this specification making
With some specific terms, but these terms are merely for convenience of description, do not constitute the present invention any
Limit.
Claims (13)
1. a core level pump intake filter screen monitoring device, it is characterised in that: described core level pump intake filter screen is monitored
Device includes power supply, relay, alarm and pressure control switch, and pressure control switch can be according to pressure
Signal carries out on-off control, and pressure control switch is connected with alarm by power source for relay control.
Core level pump intake filter screen monitoring device the most according to claim 1, it is characterised in that: described pressure
Power controls switch for pressure switch.
Core level pump intake filter screen monitoring device the most according to claim 2, it is characterised in that: described pressure
The pressure input of power switch comes from the outlet side of core level pump intake filter screen.
Core level pump intake filter screen monitoring device the most according to claim 3, it is characterised in that: when described
When the pressure input of pressure switch is not more than the threshold value set, described pressure switch passes through power source for relay control
Connect with alarm.
5., according to the core level pump intake filter screen monitoring device according to any one of claim 2-4, its feature exists
In: described core level pump intake filter screen monitoring device also includes pressure transmitter, the pressure input of pressure transmitter
Come from the outlet side of core level pump intake filter screen.
Core level pump intake filter screen monitoring device the most according to claim 5, it is characterised in that: described core
Level pump intake filter screen monitoring device also includes monitor, and the signal that pressure transmitter exports is converted to by monitor
Force value, and carry out real time record and display.
Core level pump intake filter screen monitoring device the most according to claim 5, it is characterised in that: described pressure
Power transmitter and relay are parallel between the both positive and negative polarity of power supply, and pressure switch is connected on the control of relay and returns
Lu Zhong, alarm is connected in the controlled loop of relay.
Core level pump intake filter screen monitoring device the most according to claim 1, it is characterised in that: described pressure
It is differential pressure switch that power controls switch.
Core level pump intake filter screen monitoring device the most according to claim 8, it is characterised in that: described difference
Two the pressure inputs compressed switch are respectively from the both sides of core level pump intake filter screen.
Core level pump intake filter screen monitoring device the most according to claim 9, it is characterised in that: when described
When the difference of two pressure inputs of differential pressure switch is more than the threshold value set, described differential pressure switch passes through relay control
Power supply processed connects with alarm.
11. core level pump intake filter screen monitoring device according to any one of-10, its features according to Claim 8
It is: described core level pump intake filter screen monitoring device also includes differential pressure transmitter, two pressures of differential pressure transmitter
Power input is respectively from the both sides of core level pump intake filter screen.
12. core level pump intake filter screen monitoring devices according to claim 11, it is characterised in that: described
Core level pump intake filter screen monitoring device also includes monitor, the signal conversion that differential pressure transmitter is exported by monitor
For differential pressure value, and carry out real time record and display.
13. core level pump intake filter screen monitoring devices according to claim 11, it is characterised in that: described
Differential pressure transmitter and relay are parallel between the both positive and negative polarity of power supply, and differential pressure switch is connected on the control of relay
In loop, alarm is connected in the controlled loop of relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610414400.6A CN105927529A (en) | 2016-06-14 | 2016-06-14 | Nuclear grade pump inlet filter screen monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610414400.6A CN105927529A (en) | 2016-06-14 | 2016-06-14 | Nuclear grade pump inlet filter screen monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105927529A true CN105927529A (en) | 2016-09-07 |
Family
ID=56834092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610414400.6A Pending CN105927529A (en) | 2016-06-14 | 2016-06-14 | Nuclear grade pump inlet filter screen monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105927529A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108170869A (en) * | 2016-12-06 | 2018-06-15 | 广东核电合营有限公司 | The feasibility of nuclear power plant's pump entrance pipe setting filter determines method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966578A (en) * | 2012-11-30 | 2013-03-13 | 中广核工程有限公司 | Pressure control method and device for pump unit of nuclear power station |
| CN203598566U (en) * | 2013-12-10 | 2014-05-21 | 中广核工程有限公司 | Filter unit at pump inlet of nuclear power plant |
| EP2787216A1 (en) * | 2013-04-01 | 2014-10-08 | Ingersoll-Rand Company | System and filter indicator gauge |
| CN105047240A (en) * | 2015-06-02 | 2015-11-11 | 深圳中广核工程设计有限公司 | Nuclear-grade pump intake filter screen differential pressure protector of PWR nuclear power plant |
| CN105355241A (en) * | 2015-10-22 | 2016-02-24 | 中广核工程有限公司 | Overpressure protection system and method of cold functional test in nuclear power plant |
-
2016
- 2016-06-14 CN CN201610414400.6A patent/CN105927529A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966578A (en) * | 2012-11-30 | 2013-03-13 | 中广核工程有限公司 | Pressure control method and device for pump unit of nuclear power station |
| EP2787216A1 (en) * | 2013-04-01 | 2014-10-08 | Ingersoll-Rand Company | System and filter indicator gauge |
| CN203598566U (en) * | 2013-12-10 | 2014-05-21 | 中广核工程有限公司 | Filter unit at pump inlet of nuclear power plant |
| CN105047240A (en) * | 2015-06-02 | 2015-11-11 | 深圳中广核工程设计有限公司 | Nuclear-grade pump intake filter screen differential pressure protector of PWR nuclear power plant |
| CN105355241A (en) * | 2015-10-22 | 2016-02-24 | 中广核工程有限公司 | Overpressure protection system and method of cold functional test in nuclear power plant |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108170869A (en) * | 2016-12-06 | 2018-06-15 | 广东核电合营有限公司 | The feasibility of nuclear power plant's pump entrance pipe setting filter determines method and device |
| CN108170869B (en) * | 2016-12-06 | 2023-01-31 | 广东核电合营有限公司 | Feasibility determination method and device for arranging filter on water pump inlet pipe of nuclear power plant |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160907 |
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| RJ01 | Rejection of invention patent application after publication |