CN209310204U - Subway air adjusts cold water machine control system - Google Patents
Subway air adjusts cold water machine control system Download PDFInfo
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- CN209310204U CN209310204U CN201822140074.1U CN201822140074U CN209310204U CN 209310204 U CN209310204 U CN 209310204U CN 201822140074 U CN201822140074 U CN 201822140074U CN 209310204 U CN209310204 U CN 209310204U
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- water machine
- cooling
- cold water
- control system
- machine control
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Abstract
The utility model discloses a kind of subway airs to adjust cold water machine control system, including water cooler, cooling tower and AHU air processor, the water cooler includes unit cold water machine controller, condenser, evaporator and screw compressor, cold water machine controller and condenser, evaporator and screw compressor connection, the utility model is directly transformed in cooling-water machine system pipeline, improvement project amount is small, it is easy to operate, according to the environment temperature of cooling-water machine system, automatically suction draught head is established, it works so that cooling-water machine system rapidly enters high load capacity according to environment, quickly reduce environment temperature, it avoids the cooling-water machine system starting long period from being in suction and discharge to force down in work alarm, percent of automatization is high, reduce the rate of breakdown of cooling-water machine system, reduce maintenance cost, so that cooling-water machine system work corresponding speed is fast , improve the reliability of equipment performance.
Description
Technical field
The utility model relates to a kind of subway airs to adjust cold water machine control system.
Background technique
Subway air adjusts cold water machine control system and is also known as: refrigerator, refrigeration unit, ice water unit, cooling equipment etc.,
Because the use of all trades and professions is than wide, so the requirement for adjusting cold water machine control system to subway air is also different.Its work
It is a multi-functional machine as principle, eliminates liquid vapors and pass through compression or heat absorption formula refrigeration cycle.
With the development of urban construction, air handling system is devised in Metro Design, wherein having related to subway sky
Controlled atmosphere section cold water machine control system is used for the adjusting of environment, and it is not high so that machine to be frequently encountered environment temperature in actual operation
Group underload, freezing temperature and coolant water temperature approach and situation is shut down in the alarms such as freezing temperature is higher, especially arteriopathy
Unit is " on the spot " or after " long-range " starting 3 minutes in the case that air-conditioning season circumstance of temperature difference changes greatly, it may appear that inhales
It is vented the low fault alarm of pressure difference, unit, which reopens, after manual reset can still report double faults to alarm, continuity failure alarm
The starting time that unit can be extended leads to extending for cool time for station size ventilation and air conditioning system, seriously affects multiplying for station
Objective comfort level and equipment machine room refrigeration effect.
Utility model content
The purpose of the utility model is to overcome the above deficiencies in the existing technologies, and provide a kind of structure design conjunction
The subway air of reason adjusts cold water machine control system.
The technical scheme in the invention for solving the above technical problem is: a kind of subway air adjusting cooling-water machine control system
System, including water cooler, cooling water circulating pipe, refrigerating cycle pipeline and pump group, the water cooler pass through cooling water
Circulating line is connect with cooling tower, the air processing machine and fan coil that water cooler passes through freezing water circulating pipe and subway
Connection, several pump groups are arranged on corresponding cooling water circulating pipe and refrigerating cycle pipeline, the cooling of cooling water circulating pipe
Valve body extension control unit is provided on water inlet pipe, the valve body extension control unit includes electronic valve body actuator, simulation
Amount module and extending controller, the electronic valve body actuator are arranged on the valve body of cooling water inlet pipe, the expansion
Exhibition controller is connect with water cooler main controller and electronic valve body actuator, and the extending controller passes through analog module
Remote control terminal is connect and accessed with the system bus of cold water machine control system, and the analog module stated is for acquiring cooling-water machine control
The environment temperature parameter of system processed.
Further: the extending controller and analog module connects cold water group power supply by power transformer.
Further: the extending controller uses PCL extending controller.
Further: the cooling water inlet pipe is provided with electronic flowmeter.
Further: the main controller is connected with man-machine interface display screen.
Further: the electronic valve body actuator uses two energization moving valve actuators, the logical motor-driven valve of described two
Door actuator includes driving motor, handwheel and Worm and worm-wheel gearing, the driving motor and handwheel respectively with snail
The connection of worm and gear transmission mechanism, Worm and worm-wheel gearing mechanism are connect with valve body.
Further: analog module, extending controller, power transformer and the main controller is integrally disposed upon
It controls in cabinet.
The utility model compared with prior art, has the following advantages that and effect:
(1) it is directly transformed in cooling-water machine system pipeline, improvement project amount is small, easy to operate.
(2) according to the environment temperature of cooling-water machine system, suction draught head is established automatically, so that cooling-water machine system is according to environment
High load capacity work is rapidly entered, environment temperature is quickly reduced, the cooling-water machine system starting long period is avoided to force down in suction and discharge
In work alarm.
(3) percent of automatization is high, reduces the rate of breakdown of cooling-water machine system, maintenance cost is reduced, so that cooling-water machine system
Work corresponding speed of uniting is fast, improves the reliability of equipment performance.
Detailed description of the invention
Fig. 1 is the schematic diagram that the utility model embodiment subway air adjusts cold water machine control system.
Fig. 2 is the structural schematic diagram of the utility model embodiment valve body extension control unit.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
A kind of subway air of the present embodiment adjusts cold water machine control system, such as shown in Fig. 1, including water cooler, cooling
Water circulating pipe, refrigerating cycle pipeline and pump group, the water cooler pass through cooling water circulating pipe and connect with cooling tower,
Water cooler is connected by the air processing machine (AHU) and fan coil of freezing water circulating pipe and subway, and several pump groups are set
It sets on corresponding cooling water circulating pipe and refrigerating cycle pipeline, is provided with valve on the cooling water inlet pipe of cooling water circulating pipe
Body extends control unit, as shown in Figure 2: the valve body extension control unit includes electronic valve body actuator, analog module
And extending controller, the electronic valve body actuator are arranged on the valve body of cooling water inlet pipe, the extension control
Device is connect with water cooler main controller and electronic valve body actuator, and the extending controller passes through analog module and cold water
The system bus of machine control system connects and accesses remote control terminal, and the analog module stated is for acquiring cold water machine control system
Environment temperature parameter.
Wherein the specific extending controller and analog module connect cold water group power supply by power transformer,
The extending controller uses PCL extending controller, and the cooling water inlet pipe is provided with electronic flowmeter, the master control
Device is connected with man-machine interface display screen, and the electronic valve body actuator uses two energization moving valve actuators, described
Two logical electric valve actuators include driving motor, handwheel and Worm and worm-wheel gearing, the driving motor and hand
Wheel is connect with Worm and worm-wheel gearing respectively, and Worm and worm-wheel gearing mechanism is connect with valve body, the analog module,
Extending controller, power transformer and main controller are integrally disposed upon in control cabinet.
The working principle of the present embodiment: analog module acquires cold in input water chilling unit control system via system bus
Freeze the parameters (water cooler built-in system function) such as disengaging temperature of cooling water, extending controller control logic is according to the ginseng of input
Several or remote control terminal (the BAS tele-control system that metro environment is used with equipment monitoring system) given value holds electronic valve body
Row device carries out movement and automatically controls operation, and electronic valve body actuator driven valve body makes the change of flux, based on due in pipeline
Fluid flow is bigger, then the pressure difference generated before and after throttling set is i.e. bigger, and the control logic of the present embodiment extending controller is
Flow is reduced with the raising of chilled water inflow temperature, i.e. the opening amount of valve body increases as the temperature rises, thus in ring
Border temperature is lower, forms suction and discharge draught head in the case that unit load is low in time, establish the suction draught head of unit automatically,
Solve the case where refrigerator causes fault alarm due to suction draught head.
Above content is only illustrate to examples for clearly illustrating the present invention described in this specification.The utility model
Person of ordinary skill in the field can make various modifications or additions to the described embodiments or using class
As mode substitute, content without departing from the utility model specification or surmount model defined in the claims
It encloses, all should belong to the protection range of the utility model.
Claims (7)
1. a kind of subway air adjusts cold water machine control system, including water cooler, cooling water circulating pipe, refrigerating cycle pipeline
And pump group, the water cooler pass through cooling water circulating pipe and connect with cooling tower, water cooler is recycled by chilled water
The connection of the air processing machine and fan coil of pipeline and subway, the setting of several pump groups is in corresponding cooling water circulating pipe and cold
Freeze on circulating line, it is characterised in that: valve body extension control unit, institute are provided on the cooling water inlet pipe of cooling water circulating pipe
The valve body extension control unit stated includes electronic valve body actuator, analog module and extending controller, the motor-driven valve
Body actuator is arranged on the valve body of cooling water inlet pipe, the extending controller and water cooler main controller and motor-driven valve
The connection of body actuator, the extending controller are connect and are connect with the system bus of cold water machine control system by analog module
Enter remote control terminal.
2. subway air according to claim 1 adjusts cold water machine control system, it is characterised in that: the extension control
Device and analog module pass through power transformer connection cold water group power supply.
3. subway air according to claim 1 adjusts cold water machine control system, it is characterised in that: the extension control
Device uses PCL extending controller.
4. subway air according to claim 1 adjusts cold water machine control system, it is characterised in that: the cooling water inlet
Pipe is provided with electronic flowmeter.
5. subway air according to claim 1 adjusts cold water machine control system, it is characterised in that: the main controller connects
It connects and is provided with man-machine interface display screen.
6. subway air according to claim 1 adjusts cold water machine control system, it is characterised in that: the electronic valve body
Actuator uses two energization moving valve actuators, and the logical electric valve actuator of described two includes driving motor, handwheel and snail
Worm and gear transmission mechanism, the driving motor and handwheel are connect with Worm and worm-wheel gearing respectively, Worm Wheel System
Mechanism is connect with valve body.
7. subway air according to claim 2 adjusts cold water machine control system, it is characterised in that: the analog quantity mould
Block, extending controller, power transformer and main controller are integrally disposed upon in control cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822140074.1U CN209310204U (en) | 2018-12-19 | 2018-12-19 | Subway air adjusts cold water machine control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822140074.1U CN209310204U (en) | 2018-12-19 | 2018-12-19 | Subway air adjusts cold water machine control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209310204U true CN209310204U (en) | 2019-08-27 |
Family
ID=67677721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822140074.1U Active CN209310204U (en) | 2018-12-19 | 2018-12-19 | Subway air adjusts cold water machine control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209310204U (en) |
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2018
- 2018-12-19 CN CN201822140074.1U patent/CN209310204U/en active Active
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