CN103256689A - Integrated water route protective device - Google Patents
Integrated water route protective device Download PDFInfo
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- CN103256689A CN103256689A CN201310205443XA CN201310205443A CN103256689A CN 103256689 A CN103256689 A CN 103256689A CN 201310205443X A CN201310205443X A CN 201310205443XA CN 201310205443 A CN201310205443 A CN 201310205443A CN 103256689 A CN103256689 A CN 103256689A
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Abstract
The invention discloses an integrated water route protective device, and belongs to the technical field of safety control of temperature control systems. The integrated water route protective device is used on water routes relative to air conditioners or freezing systems or heating systems, and can ensure the reliable operation of a heat exchanger. The integrated water route protective device comprises a protective device body, a fluid temperature detection part, an outlet water temperature detection part, a flow detection part, a detection part controller and an inlet water temperature detection part, wherein the fluid temperature detection part is arranged on the side of a cooling agent of the heat exchanger, the outlet water temperature detection part is arranged at the water outlet end of a water route, the detection part controller is arranged on the protective device body, and the inlet water temperature detection part is arranged at the water inlet end of the water route. Two ends of the protective device body are correspondingly arranged at the water outlet end and the water inlet end of the water route respectively, the flow detection part is arranged in the protective device body, and the detection part controller receives a working order of an external system, then collects output signals of the fluid temperature detection part arranged on the side of the cooling agent of the heat exchanger, the outlet water temperature detection part, the flow detection part and the inlet water temperature detection part, judges abnormal conditions of specific working conditions, and outputs early warning signals. The integrated water route protective device can improve reliability of system operation, and effectively avoid the situation that the heat exchanger looses effectiveness due to filth blockage or misoperation.
Description
Technical field
What the present invention relates to is the device in the safety control technology field in a kind of humidity control system, specifically is a kind of for air-conditioning, the freezing or relevant water route of heating system, guarantees the integrated water route protector of heat exchanger reliability service.
Background technology
Along with technological progress, a large amount of plate type heat exchangers more efficiently that use of existing air-conditioning unit, but in the application of at present supporting engineering, water quality requirement is based on the traditional shell pipe heat exchanger, can't all satisfy the higher requirement of plate type heat exchanger.
Find through the retrieval to prior art, Chinese patent literature CN202813660, open day 2013-03-20, put down in writing a kind of air conditioner cold water unit outage anti-freeze protection device, comprise ups power, relay, condenser and evaporimeter, be provided with normally closed solenoid valve between condenser and evaporimeter, an end air guide port of normally closed solenoid valve is connected with condenser, and other end air guide port is connected with evaporimeter; The input of ups power is connected to host power supply, and the output of ups power is connected on the normally closed solenoid valve by two normally opened contacts of relay.Guarantee that evaporating temperature can not be low excessively but this technology only guarantees at refrigerant loop that thereby pressure reaches, play antifreeze effect, but can't judge and guarantee the normal operation in water route.
In addition; Chinese patent literature CN2235089; open day 1996-09-11; put down in writing the defrost protection control device of a kind of air-cooled cold (heat) water unit; formed by fan work loop, fan control loop, temperature control loop, time control loop and pressure control loop; when unit is in heated condition; fan work is switched in the fan control loop; temperature control loop and time control loop coordination; periodically control defrost temperature and time started, the concluding time of pressure control loop control defrost.But this technology is at the defrost protection of air-cooled condenser and controlling of defrost, and do not carry out related description for the water route.Prior art all can't play defencive function all sidedly.
Summary of the invention
The present invention is directed to the prior art above shortcomings, a kind of integrated water route protector is provided, can improve system's operational reliability, effectively prevent from causing heat exchanger failure because of dirty stifled or misoperation.
The present invention is achieved by the following technical solutions:
The present invention relates to a kind of integrated water route protector; comprise: the protector body; be arranged at temperature (pressure) detection piece of heat exchanger refrigerant side fluid issuing; be arranged at the leaving water temperature detection piece of water side, water route; inner leaving water temperature detection piece; the flow detection part; be arranged at detection piece controller and the inflow temperature detection piece that is arranged at the water route water inlet end on the protector body; wherein: an end correspondence of protector body is arranged at the water inlet end in water route; the flow detection part is arranged at the inside of protector body; the detection piece controller receives the work order of outer welding system; and then collection heat exchanger water side liquid temperature detection part; the leaving water temperature detection piece; inner leaving water temperature detection piece; the output signal of flow detection part and inflow temperature detection piece; collect the output signal of heat exchanger refrigerant side fluid temperature (F.T.) (pressure) detection piece simultaneously; judge the abnormal conditions of specific operation, the output early warning signal.
The inside of described protector body is provided with filter member.
Described protector body is triple valve, and the bottom position of its Y type has place's concave configuration, and this structure is held filter member.
Described concave configuration is for being obliquely installed.
The bottom of the concave configuration of described protector body is provided with dirt-discharging hook, is used for blowdown.
The present invention relates to a kind of monitoring method based on above-mentioned protector; by heat exchanger inside leaving water temperature, leaving water temperature, discharge and inflow temperature and the refrigerant side fluid temperature (F.T.) of detection piece controller according to collection; carry out the abnormal conditions of specific operation and judge, and be judged to be detection piece controller output alarm or stopping signal when unusual.
The abnormal conditions judgement of described specific operation comprises: starting state abnormality juding, normal operating condition abnormality juding, defrost state abnormality juding, static stopped status abnormality juding, stifled dirty situation abnormality juding and extreme freezing state abnormality juding.
Described starting state abnormality juding refers to: detect the discharge by heat exchanger before the refrigeration host computer compressor start, when discharge meets setting value, as according to GB chilled-water flow 0.172m
3/ h/kw (+/-20%) allows unit starting; In start-up course, gather discharge, inflow temperature and leaving water temperature, guarantee not cut off the water supply in start-up course stream or inner ice are stifled; Heat exchanger refrigerant side fluid temperature (F.T.) is in the unit of the recurrence within reasonable time design load of starting state〉0 ℃, when setting-up time inner refrigerant side liquid temperature does not return the unit design load, as under the standard air conditioning condition, the design load scope is 0～6 ℃, then sends stopping signal and warning; In dual system or multisystem, pass through the signal of the compressor start and stop quantity of reading system, can be according to discharge, the difference of inflow temperature and leaving water temperature, judge whether unusual, as when compressor a startup being arranged, discharge is normal, and inflow temperature is the same with leaving water temperature, judges that then compressor assembly is unusual; If the difference of inflow temperature and leaving water temperature in the reasonable scope, then be judged as normal.Under the standard air conditioning condition, zone of reasonableness is 5 ℃+/-2 ℃; If compressor has 1 and above startup, water temperature difference is zero, then sends alarm signal.
Described normal operating condition abnormality juding refers to: heat exchanger refrigerant side fluid temperature (F.T.) is more than or equal to 0 ℃, and leaving water temperature is greater than 0 ℃ and less than inflow temperature, and inner leaving water temperature changes synchronously with leaving water temperature, and discharge meets setting value, and state is normal; If have one unusually, then send alarm signal.
Described defrost state abnormality juding refers to: when inflow temperature greater than 10 ℃, and the refrigerant side fluid temperature (F.T.) is more than or equal to-30 ℃, state is normal; When inflow temperature descends rapidly, leaving water temperature is greater than 0 ℃, and the refrigerant side fluid temperature (F.T.) is less than 0 ℃, and discharge then is judged to be unusual less than setting half of flow.
Inflow temperature descends rapidly and refers to descend with the above speed of 5 ℃/min.
Described static stopped status abnormality juding refers to: when leaving water temperature greater than 0 ℃, discharge equals at 0 o'clock, state is normal, otherwise is judged to be unusual;
Described stifled dirty situation abnormality juding refers to: the discharge reading be lower than setting value half, inflow temperature and leaving water temperature difference be greater than normal value, the refrigerant side fluid temperature (F.T.) descends simultaneously, then is judged as dirty stifled generation, sends the also stopping signal of reporting to the police; In the heat exchanger of a plurality of refrigerant systems loop design, according to the compressor start stop signal, when the home loop startup, inner leaving water temperature but changes with leaving water temperature, then judges dirty stifled.
Described extreme freezing state abnormality juding refers to: discharge drops to setting value below 30%, and the refrigerant side fluid temperature (F.T.) descends simultaneously, and then freezing obstruction takes place, and is judged to be unusually, sends and reports to the police and stopping signal.
The reasonable time scope of described starting state is 1～60 minute.
The present invention relates to a kind of air-conditioning system of using above-mentioned integrated water route protector; described integrated water route protector is arranged on the cooling water channel of air-conditioning system; wherein: water inlet end and the air conditioning water water return pipeline of integrated water route protector join, and the water side arranges with the air conditioner cold water main unit water inlet and joins.
The detection piece controller uses aforesaid logic to judge in the protector of described integrated water route.
The present invention judges according to discharge and water temperature difference whether water passage stops up, and freezes to wait unusually, has played perfect protective effect.According to surveying and determination, the protection of existing water route on average has 3% crash rate, has adopted water route of the present invention protector crash rate can be reduced in 5 ‰, the shared entire system cost of the present invention 1% in, the quality cost of saving has remarkable economic efficiency.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is protector bulk junction composition;
Fig. 3 is the monitoring method schematic diagram;
Fig. 4 is the recurrence figure line of heat exchanger refrigerant side fluid temperature (F.T.).
The specific embodiment
Below embodiments of the invention are elaborated, present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1; present embodiment comprises: protector body 1 is arranged at before the heat exchanger water inlet; heat exchanger refrigerant side fluid temperature (F.T.) (pressure) detection piece 3 is arranged at the refrigerant fluid outlet; be arranged at the leaving water temperature detection piece 4 of water side, water route; the inner leaving water temperature detection piece 5 in water route; flow detection part 6; be arranged at detection piece controller 7 and the inflow temperature detection piece 9 that is arranged at the water route water inlet end on the protector body 1; wherein: the two ends of protector body 1 are corresponding water side and the water inlet end that is arranged at the water route respectively; flow detection part 6 is arranged at the inside of protector body 1; detection piece controller 7 receives the work order A of outer welding system; and then the refrigerant side fluid temperature (F.T.) detection piece 3 of collection heat exchanger; leaving water temperature detection piece 4; the output signal of flow detection part 7 and inflow temperature detection piece 9; judge the abnormal conditions of specific operation, the output early warning signal.
The inside of described protector body 1 is provided with filter member 2.
As shown in Figure 2, described protector body 1 is triple valve, and the bottom position of its runner pipe has place's concave configuration 8, and this structure is held filter member 2.
Described concave configuration 8 is for being obliquely installed.
The bottom of the concave configuration 8 of described protector body 1 is provided with dirt-discharging hook 9, is used for blowdown.
In the present embodiment, filter member 2 is used screen pack, heat exchanger refrigerant side fluid temperature (F.T.) detection piece 3 or pressure sensor 3, leaving water temperature detection piece 4, inflow temperature detection piece 8 are the temperature detection probe, and flow detection part 5 is flowmeter, and output signal is detected numerical signal.
As shown in Figure 3, be used for embodiment 1 described monitoring method, detection piece controller 7 receives the work order A of outer welding system, and then according to heat exchanger refrigerant side fluid temperature (F.T.) (pressure), leaving water temperature, discharge and the inflow temperature collected, the abnormal conditions of monitoring specific operation, when being judged to be when unusual detection piece controller 7 output correlation signals under the specific operation;
Specific operation includes but not limited to: starting state, normal operating condition, defrost state, static stopped status, stifled dirty situation and extreme freezing state;
Starting state: before the refrigeration host computer compressor start, detect the discharge by heat exchanger, when discharge meets setting value, allow unit starting.In start-up course, detect discharge, inflow temperature and leaving water temperature, guarantee not cut off the water supply in start-up course stream or inner ice are stifled.Heat exchanger refrigerant side fluid temperature (F.T.) is in the unit of the recurrence within reasonable time design load of starting state〉0 ℃.As shown in Figure 4, if do not return the unit design load in setting-up time inner refrigerant side liquid temperature, then send stopping signal and warning.
In dual system or multisystem, pass through the signal of the compressor start and stop quantity of reading system, can be according to discharge, the difference of inflow temperature and leaving water temperature judges whether unusual.If compressor has 1 and above startup, water temperature difference is zero, then sends alarm signal.
Normal operating condition: heat exchanger refrigerant side fluid temperature (F.T.) is more than or equal to 0 ℃, and leaving water temperature is greater than 0 ℃ and less than inflow temperature, and inner leaving water temperature changes synchronously with leaving water temperature, and discharge meets setting value, and state is normal.If have one unusually, then send alarm signal.
Defrost state: when inflow temperature greater than 10 ℃, and the refrigerant side fluid temperature (F.T.) is more than or equal to-30 ℃, state is normal; When inflow temperature in a period of time, within 1 second to 1 minute, be reduced to below 5 ℃, leaving water temperature is greater than 0 ℃, the refrigerant side fluid temperature (F.T.) is less than 0 ℃, discharge then is judged to be unusual less than setting half of flow.
Static stopped status: when leaving water temperature greater than 0 ℃, discharge equals at 0 o'clock, state is normal, otherwise is judged to be unusual;
Dirty stifled state: the discharge reading be lower than setting value half, inflow temperature and leaving water temperature difference be greater than normal value, the refrigerant side fluid temperature (F.T.) descends simultaneously, then is judged as dirty stifled generation, sends the also stopping signal of reporting to the police; In the heat exchanger of a plurality of refrigerant systems loop design, according to the compressor start stop signal, when the home loop startup, inner leaving water temperature but changes with leaving water temperature, then judges dirty stifled.
Extreme freezing state: discharge drops to setting value below 30%, and the refrigerant side fluid temperature (F.T.) descends simultaneously, and then freezing obstruction takes place, and is judged to be unusually, sends and reports to the police and stopping signal.
The reasonable time scope of described starting state is 1～60 minute.
The air-conditioning system of present embodiment is used the integrated water route protector of embodiment 1; described integrated water route protector is arranged on the freezing water route of air-conditioning system; wherein: the water inlet end of integrated water route protector is arranged on the return pipe of freezing water route, and the water side is arranged at the water inlet of air-condition freezing main frame evaporimeter.
The detection piece controller uses embodiment 2 described monitoring methods in the protector of described integrated water route.
Claims (8)
1. integrated water route protector; it is characterized in that; comprise: the protector body; be arranged at heat exchanger refrigerant side fluid temperature (F.T.) detection piece; be arranged at the leaving water temperature detection piece of water side, water route; the inner leaving water temperature detection piece in water route; the flow detection part; be arranged at detection piece controller and the inflow temperature detection piece that is arranged at the water route water inlet end on the protector body; wherein: the two ends of protector body are corresponding water side and the water inlet end that is arranged at the water route respectively; the flow detection part is arranged at the inside of protector body; the detection piece controller receives the work order of outer welding system; and then collection heat exchanger refrigerant side fluid temperature (F.T.) detection piece; the leaving water temperature detection piece; the output signal of flow detection part and inflow temperature detection piece; judge the abnormal conditions of specific operation, the output early warning signal.
2. protector according to claim 1 is characterized in that, described protector body is triple valve, and the bottom position of its runner pipe has place's concave configuration, and this structure is held filter member.
3. protector according to claim 1 is characterized in that, described concave configuration is for being obliquely installed.
4. monitoring method based on arbitrary described protector among the claim 1-3, it is characterized in that, by heat exchanger inside leaving water temperature, leaving water temperature, discharge and inflow temperature and the refrigerant side fluid temperature (F.T.) of detection piece controller according to collection, carry out the abnormal conditions of specific operation and judge, and be judged to be detection piece controller output alarm or stopping signal when unusual;
The abnormal conditions judgement of described specific operation comprises: starting state abnormality juding, normal operating condition abnormality juding, defrost state abnormality juding, static stopped status abnormality juding, stifled dirty situation abnormality juding and extreme freezing state abnormality juding.
5. method according to claim 4 is characterized in that, described starting state abnormality juding refers to: detect the discharge by heat exchanger before the refrigeration host computer compressor start, when discharge meets setting value, allow unit starting; In start-up course, detect discharge, inflow temperature and leaving water temperature, guarantee not cut off the water supply in start-up course stream or inner ice are stifled; Heat exchanger refrigerant side fluid temperature (F.T.) is in the unit of the recurrence within reasonable time design load of starting state〉0 ℃, if do not return the unit design load in setting-up time inner refrigerant side liquid temperature, then send stopping signal and report to the police;
The described signal that passes through the compressor start and stop quantity of reading system in dual system or multisystem can be according to discharge, and the difference of inflow temperature and leaving water temperature judges whether unusual; If compressor has 1 and above startup, water temperature difference is zero, then sends alarm signal;
Described normal operating condition abnormality juding refers to: heat exchanger refrigerant side fluid temperature (F.T.) is more than or equal to 0 ℃, and leaving water temperature is greater than 0 ℃ and less than inflow temperature, and inner leaving water temperature changes synchronously with leaving water temperature, and discharge meets setting value, and state is normal; If have one unusually, then send alarm signal;
Described defrost state abnormality juding refers to: when inflow temperature greater than 10 ℃, and the refrigerant side fluid temperature (F.T.) is more than or equal to-30 ℃, state is normal; When inflow temperature descends rapidly, leaving water temperature is greater than 0 ℃, and the refrigerant side fluid temperature (F.T.) is less than 0 ℃, and discharge then is judged to be unusual less than setting half of flow;
Described static stopped status abnormality juding refers to: when leaving water temperature greater than 0 ℃, discharge equals at 0 o'clock, state is normal, otherwise is judged to be unusual;
Described stifled dirty situation abnormality juding refers to: the discharge reading be lower than setting value half, inflow temperature and leaving water temperature difference be greater than normal value, the refrigerant side fluid temperature (F.T.) descends simultaneously, then is judged as dirty stifled generation, sends the also stopping signal of reporting to the police; In the heat exchanger of a plurality of refrigerant systems loop design, according to the compressor start stop signal, when the home loop startup, inner leaving water temperature but changes with leaving water temperature, then judges dirty stifled;
Extreme freezing state abnormality juding refers to: discharge drops to setting value below 30%, and the refrigerant side fluid temperature (F.T.) descends simultaneously, and then freezing obstruction takes place, and is judged to be unusually, sends and reports to the police and stopping signal.
6. method according to claim 5 is characterized in that, described inflow temperature descends rapidly and refers to descend with the above speed of 5 ℃/min;
The reasonable time scope of described starting state is 1～60 minute.
7. air-conditioning system; it is characterized in that; comprise arbitrary described integrated water route protector among the claim 1-3; this integrated water route protector is arranged on the cooling water channel of air-conditioning system; wherein: the water inlet end of integrated water route protector is arranged on the return pipe of freezing water route, and the water side is arranged at the water inlet of air-condition freezing main frame evaporimeter.
8. air-conditioning system according to claim 7 is characterized in that, detection piece controller right to use requires 4 or 5 described logics to judge in the protector of described integrated water route.
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| CN201310205443.XA CN103256689B (en) | 2013-05-28 | 2013-05-28 | Integrating water route protector |
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| CN201310205443.XA CN103256689B (en) | 2013-05-28 | 2013-05-28 | Integrating water route protector |
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| CN103256689B CN103256689B (en) | 2016-03-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107062624A (en) * | 2017-05-08 | 2017-08-18 | 珠海格力电器股份有限公司 | The water route method for detecting abnormality and detecting system of air energy thermal water dispenser |
| CN107247452A (en) * | 2017-06-05 | 2017-10-13 | 珠海格力电器股份有限公司 | Unit water shortage method for diagnosing faults, device and system |
| CN110857871A (en) * | 2018-08-24 | 2020-03-03 | 北京北方华创微电子装备有限公司 | Cooling water path early warning method and system and semiconductor processing equipment |
| CN113623706A (en) * | 2020-05-09 | 2021-11-09 | 艾默生环境优化技术(苏州)有限公司 | Anti-freezing protection method, anti-freezing protection system and water system heat pump unit |
| CN114413646A (en) * | 2020-10-28 | 2022-04-29 | 艾默生环境优化技术(苏州)有限公司 | Dirty blockage state determination device and determination method for condenser |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107062624A (en) * | 2017-05-08 | 2017-08-18 | 珠海格力电器股份有限公司 | The water route method for detecting abnormality and detecting system of air energy thermal water dispenser |
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| CN107247452A (en) * | 2017-06-05 | 2017-10-13 | 珠海格力电器股份有限公司 | Unit water shortage method for diagnosing faults, device and system |
| CN110857871A (en) * | 2018-08-24 | 2020-03-03 | 北京北方华创微电子装备有限公司 | Cooling water path early warning method and system and semiconductor processing equipment |
| CN110857871B (en) * | 2018-08-24 | 2022-01-11 | 北京北方华创微电子装备有限公司 | Cooling water path early warning method and system and semiconductor processing equipment |
| CN113623706A (en) * | 2020-05-09 | 2021-11-09 | 艾默生环境优化技术(苏州)有限公司 | Anti-freezing protection method, anti-freezing protection system and water system heat pump unit |
| CN113623706B (en) * | 2020-05-09 | 2023-05-16 | 艾默生环境优化技术(苏州)有限公司 | Anti-freezing protection method, anti-freezing protection system and water system heat pump unit |
| CN114413646A (en) * | 2020-10-28 | 2022-04-29 | 艾默生环境优化技术(苏州)有限公司 | Dirty blockage state determination device and determination method for condenser |
| WO2022088317A1 (en) * | 2020-10-28 | 2022-05-05 | 艾默生环境优化技术(苏州)有限公司 | Filth blockage state determination apparatus and determination method for condenser |
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|---|---|
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