CN103076258A - Equipment for automatically detecting density of glycol solution - Google Patents
Equipment for automatically detecting density of glycol solution Download PDFInfo
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- CN103076258A CN103076258A CN2012105788286A CN201210578828A CN103076258A CN 103076258 A CN103076258 A CN 103076258A CN 2012105788286 A CN2012105788286 A CN 2012105788286A CN 201210578828 A CN201210578828 A CN 201210578828A CN 103076258 A CN103076258 A CN 103076258A
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- glycol solution
- density
- line densimeter
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- ethylene glycol
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Abstract
The invention provides equipment for automatically detecting the density of a glycol solution, relates to the field of automatic detection of an air-conditioning refrigeration system and in particular relates to automatic detection and reading of the glycol density. The equipment for automatically detecting the density of the glycol solution comprises an on-line densimeter (1), a proportion integration differentiation (PID) regulating meter (5) and a direct current power supply (6), wherein the on-line densimeter (1) is mounted on a cold liquid-loaded pipeline; the PID regulating meter (5) is used for receiving data information transmitted by the on-line densimeter (1), comparing the data information with the set density data and responding; and the direct current power supply (6) is used for providing power supply for the on-line densimeter (1). The equipment for automatically detecting the density of the glycol solution can reduce complex process caused by manual measurement and can know the density of the glycol solution in a system so as to guarantee that the density of the glycol solution meets the freezing point requirement.
Description
Technical field
The present invention relates to the automatic detection field of air-conditioning refrigeration system, relate in particular to automatic detection and read ethylene glycol density.
Background technology
In order to prevent that at low temperatures the glycol water of packing into replaces water to do refrigerating medium, to guarantee at the low temperature condition heat exchange coil not by bursting by freezing in heat exchange coil.But because the freezing point of glycol water is to change with concentration change, in order constantly to observe ethylene glycol density and to realize the warning of ethylene glycol solution density bound.
Summary of the invention
The object of the present invention is to provide a kind of ethylene glycol solution density automatic checkout equipment that can detect in real time ethylene glycol solution density.
Purpose of the present invention can realize like this, designs a kind of ethylene glycol solution density automatic checkout equipment, comprises on-line densimeter, PID reconciliation statement, direct supply,
On-line densimeter is installed on the refrigerating liquid pipeline;
The PID reconciliation statement receives the data message that on-line densimeter sends, and reacts after the density data with this data message and setting;
Direct supply is for on-line densimeter provides power supply.
Further, on on-line densimeter two ends and the arm that refrigerating liquid pipeline is connected valve is set respectively, the refrigerating liquid pipeline that occupy between two arm accesses place is provided with valve, and described valve is used for being adjusted in the flow velocity of liquid in the line density instrumentation buret.
Further, at the upper and lower limit output port of PID reconciliation statement one relay being set respectively, connects with a pilot lamp in a contact of relay.
Further, connect with a hummer in another contact of described relay.
Further, on-line densimeter is to install perpendicular to ground.
The present invention can make and reduce the loaded down with trivial details property that manual measurement brings, and can understand the density of ethylene glycol solution in the system, satisfies the freezing point requirement to guarantee ethylene glycol solution density.
Description of drawings
Fig. 1 is the synoptic diagram of preferred embodiment of the present invention;
Fig. 2 is the synoptic diagram of the caution part of preferred embodiment of the present invention;
Fig. 3 is the synoptic diagram of one of preferred embodiment on-line densimeter installation of the present invention;
Fig. 4 is two synoptic diagram of preferred embodiment on-line densimeter of the present invention installation.
Embodiment
The invention will be further described below in conjunction with embodiment.
As shown in Figure 1, a kind of ethylene glycol solution density automatic checkout equipment comprises on-line densimeter 1, PID reconciliation statement 5, direct supply 6; On-line densimeter 1 is installed on the refrigerating liquid pipeline; PID reconciliation statement 5 receives the data message that on-line densimeter 1 sends, and reacts after the density data with this data message and setting; Direct supply 6 is for on-line densimeter 1 provides power supply.
As shown in Figure 3, Figure 4, on on-line densimeter 1 two ends and the arm that refrigerating liquid pipeline is connected valve 2,3 is set respectively, the refrigerating liquid pipeline that occupy between two arm accesses place is provided with valve 4, and described valve is used for being adjusted in the flow velocity of liquid in the line density instrumentation buret.On-line densimeter 1 is to install perpendicular to ground.Described connecting tube, valve are stainless material, be connected to the on-line densimeter two ends valve 2,3 and bore be that the pipeline of DN50 is complementary, trunk line can satisfy the requirement of ethylene glycol water system, 4 on valve is complementary with trunk line.The mounting means of pipe device is that ethylene glycol solution is flowed through the direction of on-line densimeter for from the bottom up, fills the online density measuring pipeline section to guarantee ethylene glycol solution.When trunk line is level, install as shown in Figure 3; When trunk line is vertical direction, install as shown in Figure 4.What valve adopted in this enforcement is gate valve, and the opening degree of gate valve 4 can make solution fill the measuring tube of on-line densimeter 1, and regulates the flow velocity of measuring liquid in pipe.The model that the on-line densimeter of present embodiment adopts the new Wanshan Mountain, Zhuhai City instrument company limited to provide is the on-line densimeter of WS3051-E-MDO7L1-TG, and its measuring media is ethylene glycol solution, descending pipe installing type measurement instrument.The bore of on-line densimeter is DN50, and range is 1.0-2.0g/cm
3, output signal is 4-20mA, precision is 0.001g/cm
3
As shown in Figure 2, at the upper and lower limit output port of PID reconciliation statement 5 relay 7 being set respectively, connects with a pilot lamp 8 in a contact of relay 7.Connect with a hummer 9 in another contact of described relay.The PID reconciliation statement has upper and lower limit to be worth the warning output port for can read the 4-20mA current signal, and the PID table of upper and lower limit numerical value can be set.Relay 7 is the coil of 220V alternating current for coil voltage, and normally opened contact can satisfy 220V feed circuit demand.Pilot lamp 8 tools are that rated voltage is the light fixture of 220V, can play indicative function at the circuit of 220V.Warning device 9 can play alarm function in the circuit of 220V.
In the circuit, supply with the power circuit of on-line densimeter collector, and the circuit of reading out data adopts shielding line.
The upper lower limit value of setting can provide timely above higher limit or be lower than the caution of lower limit.
During application, install the feed circuit of PID reconciliation statement and the feed circuit of online device for detecting density according to Fig. 1, and install the on-line densimeter warning circuit according to Fig. 2.Parameter declaration according to the PID reconciliation statement sets the warning upper lower limit value.And the inspection circuit, to guarantee that components and parts all can normally use.
Claims (5)
1. ethylene glycol solution density automatic checkout equipment is characterized in that: comprise on-line densimeter (1), PID reconciliation statement (5), direct supply (6),
On-line densimeter (1) is installed on the refrigerating liquid pipeline;
PID reconciliation statement (5) receives the data message that on-line densimeter (1) sends, and reacts after the density data with this data message and setting;
Direct supply (6) is for on-line densimeter (1) provides power supply.
2. ethylene glycol solution density automatic checkout equipment according to claim 1, it is characterized in that: on on-line densimeter two ends and the arm that refrigerating liquid pipeline is connected valve (2), (3) are set respectively, the refrigerating liquid pipeline that occupy between two arm accesses place is provided with valve (4), and described valve is used for being adjusted in the flow velocity of liquid in the line density instrumentation buret.
3. ethylene glycol solution density automatic checkout equipment according to claim 1, it is characterized in that: the upper and lower limit output port at PID reconciliation statement (1) arranges respectively a relay (7), and connect with a pilot lamp (8) in a contact of relay (7).
4. ethylene glycol solution density automatic checkout equipment according to claim 3, it is characterized in that: connect with a hummer (9) in another contact of described relay.
5. ethylene glycol solution density automatic checkout equipment according to claim 2, it is characterized in that: on-line densimeter (1) is for to install perpendicular to ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210578828.6A CN103076258B (en) | 2012-12-27 | 2012-12-27 | Ethylene glycol solution density automatic checkout equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210578828.6A CN103076258B (en) | 2012-12-27 | 2012-12-27 | Ethylene glycol solution density automatic checkout equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103076258A true CN103076258A (en) | 2013-05-01 |
| CN103076258B CN103076258B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210578828.6A Active CN103076258B (en) | 2012-12-27 | 2012-12-27 | Ethylene glycol solution density automatic checkout equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300972A (en) * | 2015-10-10 | 2016-02-03 | 煤炭科学技术研究院有限公司 | Determination method of glycol content in phenol and oil-containing complicated system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993015008A1 (en) * | 1992-01-27 | 1993-08-05 | Beloit Technologies, Inc. | Closed loop control for a web winding machine |
| CN201757734U (en) * | 2010-07-20 | 2011-03-09 | 杭州博纳特光电科技有限公司 | Paint density online real-time monitoring system |
-
2012
- 2012-12-27 CN CN201210578828.6A patent/CN103076258B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993015008A1 (en) * | 1992-01-27 | 1993-08-05 | Beloit Technologies, Inc. | Closed loop control for a web winding machine |
| CN201757734U (en) * | 2010-07-20 | 2011-03-09 | 杭州博纳特光电科技有限公司 | Paint density online real-time monitoring system |
Non-Patent Citations (2)
| Title |
|---|
| BERND TRATHNIGG ET AL.: ""NEW UNIVERSAL DETECTOR FOR HIGH-PERFORMANCE LIQUID CHROMATOGRY:THE DENSITY DETECTOR"", 《JOURNAL OF CHROMATOGRAPHY》, vol. 385, 31 December 1987 (1987-12-31), pages 17 - 23 * |
| 王志学: ""在线测量原油密度计特性"", 《油气储运》, vol. 15, no. 8, 31 December 1996 (1996-12-31), pages 37 - 39 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300972A (en) * | 2015-10-10 | 2016-02-03 | 煤炭科学技术研究院有限公司 | Determination method of glycol content in phenol and oil-containing complicated system |
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| Publication number | Publication date |
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| CN103076258B (en) | 2016-01-20 |
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