CN105387558A - Chilled water tail end system and fault detection method thereof - Google Patents
Chilled water tail end system and fault detection method thereof Download PDFInfo
- Publication number
- CN105387558A CN105387558A CN201510672478.3A CN201510672478A CN105387558A CN 105387558 A CN105387558 A CN 105387558A CN 201510672478 A CN201510672478 A CN 201510672478A CN 105387558 A CN105387558 A CN 105387558A
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- flow
- pressure
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- limit value
- chilled water
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pipeline Systems (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a chilled water tail end system and a fault detection method thereof. The chilled water tail end system comprises a pipeline system, wherein a pressure detection device and a flow detection device are arranged on the pipeline system. According to the invention, the pressure detection device and the flow detection device are arranged on the pipeline system, and the fault type can be judged according to the pressure and the flow detected by the pressure detection device and the flow detection device, so that the maintenance is convenient.
Description
Technical field
The present invention relates to refrigerating plant field, in particular to a kind of chilled water end system and fault detection method thereof.
Background technology
In existing chilled water end prod, the state of current in system pipeline cannot being monitored, therefore cannot perception report to the police when there is insufficient water or pipeline blockage, more cannot when breaking down the reason of accurate localizing faults.
Summary of the invention
The present invention aims to provide a kind of chilled water end system and fault detection method thereof of convenient maintenance.
The invention provides a kind of fault detection method of chilled water end system, the method comprises: step S1: the flow Qtest and the pressure P test that detect the pipe-line system of chilled water end system; Step S2: flow Qtest and pressure P test and preset value are contrasted, obtains comparing result, and according to comparing result failure judgement type.
Further, step S2 comprises: as flow Qtest=0, and during Ptest>0, then judge that pipe-line system blocks completely.
Further, step S2 also comprises: as flow Qtest<Qmin, and during Ptest>P, then judge that pipe-line system pipeline portions blocks, wherein, Qmin is flux lower limit value, Qmax is flow higher limit, and Q is metered flow value, and Pmin is low pressure limit value, Pmax is upper pressure limit value, and P is rated pressure value.
Further, step S2 also comprises: as flow Qtest>Qmax, and during Ptest<P, then judge that pipe-line system is revealed or booster, wherein, Qmin is flux lower limit value, Qmax is flow higher limit, and Q is metered flow value, and Pmin is low pressure limit value, Pmax is upper pressure limit value, and P is rated pressure value.
Further, step S2 also comprises: as flow Qtest=0, and during Ptest=0, then judge that pipe-line system does not supply water, wherein, Qmin is flux lower limit value, and Qmax is flow higher limit, and Q is metered flow value, Pmin is low pressure limit value, and Pmax is upper pressure limit value, and P is rated pressure value.
Further, step S2 also comprises: as flow Qtest<Qmin, and during Ptest<Pmin, then judge that pipe-line system hydraulic pressure is too low, wherein, Qmin is flux lower limit value, Qmax is flow higher limit, and Q is metered flow value, and Pmin is low pressure limit value, Pmax is upper pressure limit value, and P is rated pressure value.
Further, step S2 also comprises: as flow Qtest>Qmax, and during Ptest>Pmax, then judge that pipe-line system hydraulic pressure is too high, wherein, Qmin is flux lower limit value, Qmax is flow higher limit, and Q is metered flow value, and Pmin is low pressure limit value, Pmax is upper pressure limit value, and P is rated pressure value.
Present invention also offers a kind of chilled water end system, comprise pipe-line system, pipe-line system is provided with pressure-detecting device and flow detector.
Further, pressure-detecting device is pressure sensor, and flow detector is flow sensor.
Further, pressure-detecting device and flow detector are arranged on the inlet pipeline of pipe-line system.
According to chilled water end system of the present invention and fault detection method thereof, by being provided with pressure-detecting device and flow detector in pipe-line system, the pressure detected according to pressure-detecting device and flow detector and flow, thus can failure judgement type, conveniently maintenance.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to chilled water end system of the present invention;
Description of reference numerals:
10, pipe-line system; 11, pressure-detecting device; 12, flow detector.
Detailed description of the invention
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, according to chilled water end system of the present invention, comprise pipe-line system 10, pipe-line system 10 is provided with pressure-detecting device 11 and flow detector 12.The present invention passes through in pipe-line system 10, be provided with pressure-detecting device 11 and flow detector 12, the pressure detected according to pressure-detecting device 11 and flow detector 12 and flow, thus can failure judgement type, conveniently maintenance.Namely after-sales service personnel provide accurate fault reason information, save in maintenance process the time and manpower of tearing machine looking up the fault open, and the police that can furnish a forecast when occurring abnormal, prior notice is safeguarded, thus avoids unit operation to interrupt.Usually, pressure-detecting device 11 is pressure sensor, and flow detector 12 is flow sensor, easy for installation, highly sensitive.Preferably, pressure-detecting device 11 and flow detector 12 are arranged on the inlet channel of pipe-line system 10, and it is more accurate to detect.
Present invention also offers a kind of fault detection method of chilled water end system, the method comprises: step S1: the flow Qtest and the pressure P test that detect the pipe-line system 10 of chilled water end system; Step S2: flow Qtest and pressure P test and preset value are contrasted, obtains comparing result, and according to comparing result failure judgement type.
Particularly, in setting chilled water end system, flow parameter and pressure parameter are respectively: flux lower limit value is Qmin, flow higher limit is Qmax, metered flow value is Q, flow detection value is Qtest, and low pressure limit value is Pmin, and upper pressure limit value is Pmax, rated pressure value is P, and detected pressure value is Ptest.Hydraulic pressure simultaneously in monitored pipeline system and the situation of flow, can the state of accurate feedback system pipeline, reports to the police immediately when breaking down, can accurate localizing faults reason immediately, can also shift to an earlier date pre-alarm.Concrete Fault Locating Method is as following table:
| Flowmeter state | Pressure sensor state | Failure cause |
| Qtest＝0 | Ptest>0 | Pipeline blocks completely |
| Qtest<Qmin | Ptest>P | Pipeline portions blocks |
| Qtest>Qmax | Ptest<P | Pipeline is revealed or booster |
| Qtest＝0 | Ptest＝0 | Do not supply water |
| Qtest<Qmin | Ptest<Pmin | Hydraulic pressure is too low |
| Qtest>Qmax | Ptest>Pmax | Hydraulic pressure is too high |
The reason of the system failure directly can be drawn according to upper table, and can pre-alarm when components of system as directed blocking, too low, the hydraulic pressure of hydraulic pressure are too high, notify that attendant fixes a breakdown as early as possible, ensure the uninterrupted operation of unit.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
According to chilled water end system of the present invention and fault detection method thereof, by being provided with pressure-detecting device and flow detector in pipe-line system, the pressure detected according to pressure-detecting device and flow detector and flow, thus can failure judgement type, conveniently maintenance.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a fault detection method for chilled water end system, is characterized in that, described method comprises:
Step S1: the flow Qtest and the pressure P test that detect the pipe-line system (10) of chilled water end system;
Step S2: described flow Qtest and pressure P test and preset value are contrasted, obtains comparing result, and according to described comparing result failure judgement type.
2. the fault detection method of chilled water end system according to claim 1, is characterized in that, described step S2 comprises:
As described flow Qtest=0, and during described Ptest>0, then judge that described pipe-line system (10) blocks completely.
3. the fault detection method of chilled water end system according to claim 1, is characterized in that, described step S2 also comprises:
As described flow Qtest<Qmin, and during described Ptest>P, then judge that described pipe-line system (10) pipeline portions blocks, wherein, Qmin is flux lower limit value, and Qmax is flow higher limit, Q is metered flow value, Pmin is low pressure limit value, and Pmax is upper pressure limit value, and P is rated pressure value.
4. the fault detection method of chilled water end system according to claim 1, is characterized in that, described step S2 also comprises:
As described flow Qtest>Qmax, and during described Ptest<P, then judge that described pipe-line system (10) is revealed or booster, wherein, Qmin is flux lower limit value, and Qmax is flow higher limit, Q is metered flow value, Pmin is low pressure limit value, and Pmax is upper pressure limit value, and P is rated pressure value.
5. the fault detection method of chilled water end system according to claim 1, is characterized in that, described step S2 also comprises:
As described flow Qtest=0, and during described Ptest=0, then judge that described pipe-line system (10) does not supply water, wherein, Qmin is flux lower limit value, and Qmax is flow higher limit, and Q is metered flow value, Pmin is low pressure limit value, and Pmax is upper pressure limit value, and P is rated pressure value.
6. the fault detection method of chilled water end system according to claim 1, is characterized in that, described step S2 also comprises:
As described flow Qtest<Qmin, and during described Ptest<Pmin, then judge that described pipe-line system (10) hydraulic pressure is too low, wherein, Qmin is flux lower limit value, and Qmax is flow higher limit, Q is metered flow value, Pmin is low pressure limit value, and Pmax is upper pressure limit value, and P is rated pressure value.
7. the fault detection method of chilled water end system according to claim 1, is characterized in that, described step S2 also comprises:
As described flow Qtest>Qmax, and during described Ptest>Pmax, then judge that described pipe-line system (10) hydraulic pressure is too high, wherein, Qmin is flux lower limit value, and Qmax is flow higher limit, Q is metered flow value, Pmin is low pressure limit value, and Pmax is upper pressure limit value, and P is rated pressure value.
8. a chilled water end system, comprises pipe-line system (10), it is characterized in that, described pipe-line system (10) is provided with pressure-detecting device (11) and flow detector (12).
9. chilled water end system according to claim 8, is characterized in that,
Described pressure-detecting device (11) is pressure sensor, and described flow detector (12) is flow sensor.
10. chilled water end system according to claim 8, is characterized in that,
Described pressure-detecting device (11) and described flow detector (12) are arranged on the inlet pipeline of pipe-line system (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510672478.3A CN105387558A (en) | 2015-10-15 | 2015-10-15 | Chilled water tail end system and fault detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510672478.3A CN105387558A (en) | 2015-10-15 | 2015-10-15 | Chilled water tail end system and fault detection method thereof |
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| CN105387558A true CN105387558A (en) | 2016-03-09 |
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| CN201510672478.3A Pending CN105387558A (en) | 2015-10-15 | 2015-10-15 | Chilled water tail end system and fault detection method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036462A (en) * | 2017-11-29 | 2018-05-15 | 广东美的制冷设备有限公司 | Oil of air conditioner blocks up the detection method and air conditioner of failure |
| CN111350945A (en) * | 2018-12-24 | 2020-06-30 | 无锡热能在线科技有限公司 | Method for detecting medium leakage of system pipeline |
| CN113757944A (en) * | 2021-09-24 | 2021-12-07 | 广东电网有限责任公司 | Air conditioning system fault diagnosis method and system based on air conditioning system model |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111350945A (en) * | 2018-12-24 | 2020-06-30 | 无锡热能在线科技有限公司 | Method for detecting medium leakage of system pipeline |
| CN113757944A (en) * | 2021-09-24 | 2021-12-07 | 广东电网有限责任公司 | Air conditioning system fault diagnosis method and system based on air conditioning system model |
| CN113757944B (en) * | 2021-09-24 | 2022-11-11 | 广东电网有限责任公司 | Air conditioning system fault diagnosis method and system based on air conditioning system model |
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Application publication date: 20160309 |