CN205427658U - Nuclear power station cooling water set pipeline heating control system - Google Patents
Nuclear power station cooling water set pipeline heating control system Download PDFInfo
- Publication number
- CN205427658U CN205427658U CN201620103398.6U CN201620103398U CN205427658U CN 205427658 U CN205427658 U CN 205427658U CN 201620103398 U CN201620103398 U CN 201620103398U CN 205427658 U CN205427658 U CN 205427658U
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- alarm
- control system
- temperature
- temperature controller
- sheath
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Abstract
The utility model discloses a nuclear power station cooling water set pipeline heating control system, including transformer, circuit breaker, contactor, the hot cable of companion, temperature controller, alarm, thermocouple, the thermocouple detects the temperature in the pipeline and imports temperature controller with temperature signal, and temperature controller imports the alarm according to the to set the temperature scope with alarm signal, and temperature controller passes through the hot cable of control contactor on -off control companion, and the transformer is crossed to the power -on, the circuit breaker is supplied power for temperature controller, contactor. Control system still includes the earth fault detector, and the earth fault detector is connected with the sheath of alarm, the hot cable of companion, monitors the state of insulation of sheath, inputs the alarm with alarm signal when protecting the cuff belt electricity. The circuit breaker has the contact of reporting to the police, inputs the alarm with alarm signal during circuit breaker tripped. This control system accuse temperature is with the thermal response is timely, the regulation is convenient.
Description
Technical field
This utility model relates to nuclear power station handpiece Water Chilling Units pipeline heating control system.
Background technology
The nuclear power station portion of cold water unit Pipe installing that the north is built is in outdoor, and owing to outdoor extreme low temperature can reach-31.6 DEG C, the handpiece Water Chilling Units pipeline internal medium of outdoor mounted easily freezes, it is therefore necessary to heat cooling-water machine pipeline.The at present heating of outdoor handpiece Water Chilling Units pipeline mostly uses and is directly controlled by in-site installation thermometer bulb switch on pipeline; owing to thermometer bulb switch is mechanical type; precision and adjustability are poor, and often cause the danger that pipeline internal medium freezes due to the response lag of temperature controller.Heating element heater accompanying heat cable uses self-limiting heating cable, and heating tape is comparatively short for service life, and is often easily damaged, the most low temperature resistant.
Utility model content
Technical problem to be solved in the utility model is to overcome the above-mentioned deficiency of prior art to provide a kind of nuclear power station handpiece Water Chilling Units pipeline heating control system, and it is timely, easy to adjust that temperature control adds thermal response.
The technical scheme in the invention for solving the above technical problem is: nuclear power station handpiece Water Chilling Units pipeline heating control system, including transformator, chopper, catalyst, accompanying heat cable, temperature controller, alarm, thermocouple；Thermocouple detects the temperature in pipeline and by temperature signal input temp controller, alarm signal is inputted alarm according to the temperature range set by temperature controller, temperature controller controls accompanying heat cable by control contactor break-make, and power supply is that temperature controller, catalyst are powered by transformator, chopper.
The control system improved also includes that earth-fault finder, earth-fault finder are connected with the sheath of alarm, accompanying heat cable, the state of insulation of monitoring sheath, when sheath is charged, alarm signal is inputted alarm.
Alarm signal, with alarm actuating contact, is inputted alarm during circuit breaker trip by preferably chopper.
Preferably accompanying heat cable sheath is 321 rustless steels, and heart yearn is single or the nichrome of twin-core or corronil, fills magnesium oxide insulated layer between heart yearn and sheath.
The utility model has the advantage of: temperature controller sets alarm temperature scope, heating temperature range etc., thermocouple is by temperature signal input temp controller, low-temperature warning signal is inputted alarm by temperature controller, and control accompanying heat cable heating by catalyst, intelligentized control method response is in time, temperature control scope can be regulated by temperature controller, easy to operate.Earth-fault finder can detect the state of insulation of accompanying heat cable, if sheath is charged triggers alarm, enhances safety.Chopper with alarm actuating contact can point out the on off operating mode of heating circuit.The accompanying heat cable selected has high insulation, high tenacity, the advantage such as high temperature resistant.
Accompanying drawing explanation
Fig. 1 is the principle schematic of this utility model embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawings, this utility model is further illustrated by embodiment.
Embodiment, nuclear power station handpiece Water Chilling Units pipeline heating control system as shown in Figure 1, control system includes voltmeter, transformator, chopper, catalyst, accompanying heat cable, temperature controller, alarm, thermocouple, earth-fault finder.
Voltmeter is connected on the electric power incoming line before other device, is used for indicating 380V power on, can select the voltmeter with switch handoff functionality.Transformator is the 380V-50Hz-6KVA transformator having multiple tap on secondary coil, ensures have corresponding voltage to power to device, and output voltage has 12-24-48-72-96-144-220V.Chopper is double-pole cut-out, with auxiliary contact and alarm actuating contact, for powering device and the output of tripping alarm signal.Catalyst is placed on the inlet wire of accompanying heat cable, for being switched on and off the supply line of accompanying heat cable.Temperature controller, for the break-make of control contactor, the temperature signal of detection thermocouple measurement, has the functions such as double regulation output, communication, outside input, break alarm simultaneously.Thermocouple is for detecting the temperature in handpiece Water Chilling Units pipeline.Detection accompanying heat cable casing insulation state is set in earth-fault finder.Alarm is flash alarm.The protective metal shell of accompanying heat cable is 321 rustless steels, and heart yearn is single or the nichrome of twin-core or corronil, fills magnesium oxide insulated layer between heart yearn and sheath.
During work, first pass through temperature controller design temperature span of control, alarm temperature scope.When the temperature in thermocouple detects handpiece Water Chilling Units pipeline low to alarm temperature scope time, temperature controller control contactor adhesive, to accompanying heat cable for electrical heated pipings, when temperature is higher than the temperature range set, temperature controller control contactor disconnects, and accompanying heat cable stops heating.Temperature controller receives the temperature signal of thermocouple output, according to the alarm temperature scope set, it may be judged whether input alarm signal to alarm.Transformator, chopper are that device is powered, and input tripping alarm signal when circuit breaker trip to alarm.Alarm signal is inputted to alarm when the sheath that earth-fault finder detects accompanying heat cable is charged.
Claims (4)
1. nuclear power station handpiece Water Chilling Units pipeline heating control system, it is characterised in that: described control system includes transformator, chopper, catalyst, accompanying heat cable, temperature controller, alarm, thermocouple；Thermocouple detects the temperature in pipeline and by temperature signal input temp controller, alarm signal is inputted alarm according to the temperature range set by temperature controller, temperature controller controls accompanying heat cable by control contactor break-make, and power supply is that temperature controller, catalyst are powered by transformator, chopper.
Nuclear power station handpiece Water Chilling Units pipeline heating control system the most according to claim 1, it is characterized in that: described control system also includes earth-fault finder, earth-fault finder is connected with the sheath of alarm, accompanying heat cable, the state of insulation of monitoring sheath, inputs alarm by alarm signal when sheath is charged.
Nuclear power station handpiece Water Chilling Units pipeline heating control system the most according to claim 1, it is characterised in that: alarm signal, with alarm actuating contact, is inputted alarm during circuit breaker trip by described chopper.
Nuclear power station handpiece Water Chilling Units pipeline heating control system the most according to claim 1, it is characterised in that: the sheath of described accompanying heat cable is 321 rustless steels, and heart yearn is single or the nichrome of twin-core or corronil, fills magnesium oxide insulated layer between heart yearn and sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620103398.6U CN205427658U (en) | 2016-02-02 | 2016-02-02 | Nuclear power station cooling water set pipeline heating control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620103398.6U CN205427658U (en) | 2016-02-02 | 2016-02-02 | Nuclear power station cooling water set pipeline heating control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205427658U true CN205427658U (en) | 2016-08-03 |
Family
ID=56540289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620103398.6U Expired - Fee Related CN205427658U (en) | 2016-02-02 | 2016-02-02 | Nuclear power station cooling water set pipeline heating control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205427658U (en) |
-
2016
- 2016-02-02 CN CN201620103398.6U patent/CN205427658U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20180202 |